initial commit, 4.5 stable

drivers/gles3/storage/SCsub

@@ -0,0 +1,6 @@
+#!/usr/bin/env python
+from misc.utility.scons_hints import *
+
+Import("env")
+
+env.add_source_files(env.drivers_sources, "*.cpp")

drivers/gles3/storage/config.cpp

@@ -0,0 +1,251 @@
+/**************************************************************************/
+/*  config.cpp                                                            */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifdef GLES3_ENABLED
+
+#include "config.h"
+
+#include "../rasterizer_gles3.h"
+
+#ifdef WEB_ENABLED
+#include <emscripten/html5_webgl.h>
+#endif
+
+using namespace GLES3;
+
+#define _GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
+
+Config *Config::singleton = nullptr;
+
+Config::Config() {
+	singleton = this;
+
+#ifdef WEB_ENABLED
+	// Starting with Emscripten 3.1.51, glGetStringi(GL_EXTENSIONS, i) will only ever return
+	// a fixed list of extensions, regardless of what additional extensions are enabled. This
+	// isn't very useful for us in determining which extensions we can rely on here. So, instead
+	// we use emscripten_webgl_get_supported_extensions() to get all supported extensions, which
+	// is what Emscripten 3.1.50 and earlier do.
+	{
+		char *extension_array_string = emscripten_webgl_get_supported_extensions();
+		PackedStringArray extension_array = String((const char *)extension_array_string).split(" ");
+		extensions.reserve(extension_array.size() * 2);
+		for (const String &s : extension_array) {
+			extensions.insert(s);
+			extensions.insert("GL_" + s);
+		}
+		free(extension_array_string);
+	}
+#else
+	{
+		GLint max_extensions = 0;
+		glGetIntegerv(GL_NUM_EXTENSIONS, &max_extensions);
+		for (int i = 0; i < max_extensions; i++) {
+			const GLubyte *s = glGetStringi(GL_EXTENSIONS, i);
+			if (!s) {
+				break;
+			}
+			extensions.insert((const char *)s);
+		}
+	}
+#endif
+
+	bptc_supported = extensions.has("GL_ARB_texture_compression_bptc") || extensions.has("GL_EXT_texture_compression_bptc");
+	astc_hdr_supported = extensions.has("GL_KHR_texture_compression_astc_hdr");
+	astc_supported = astc_hdr_supported || extensions.has("GL_KHR_texture_compression_astc") || extensions.has("GL_OES_texture_compression_astc") || extensions.has("GL_KHR_texture_compression_astc_ldr") || extensions.has("WEBGL_compressed_texture_astc");
+	astc_layered_supported = extensions.has("GL_KHR_texture_compression_astc_sliced_3d");
+
+	if (RasterizerGLES3::is_gles_over_gl()) {
+		float_texture_supported = true;
+		float_texture_linear_supported = true;
+		etc2_supported = false;
+		s3tc_supported = true;
+		rgtc_supported = true; //RGTC - core since OpenGL version 3.0
+		srgb_framebuffer_supported = true;
+	} else {
+		float_texture_supported = extensions.has("GL_EXT_color_buffer_float");
+		float_texture_linear_supported = extensions.has("GL_OES_texture_float_linear");
+		etc2_supported = true;
+#if defined(ANDROID_ENABLED) || defined(IOS_ENABLED)
+		// Some Android devices report support for S3TC but we don't expect that and don't export the textures.
+		// This could be fixed but so few devices support it that it doesn't seem useful (and makes bigger APKs).
+		// For good measure we do the same hack for iOS, just in case.
+		s3tc_supported = false;
+#else
+		s3tc_supported = extensions.has("GL_EXT_texture_compression_dxt1") || extensions.has("GL_EXT_texture_compression_s3tc") || extensions.has("WEBGL_compressed_texture_s3tc");
+#endif
+		rgtc_supported = extensions.has("GL_EXT_texture_compression_rgtc") || extensions.has("GL_ARB_texture_compression_rgtc");
+		srgb_framebuffer_supported = extensions.has("GL_EXT_sRGB_write_control");
+	}
+
+	glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &max_vertex_texture_image_units);
+	glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_texture_image_units);
+	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
+	glGetIntegerv(GL_MAX_VIEWPORT_DIMS, max_viewport_size);
+	glGetInteger64v(GL_MAX_UNIFORM_BLOCK_SIZE, &max_uniform_buffer_size);
+	GLint max_vertex_output;
+	glGetIntegerv(GL_MAX_VERTEX_OUTPUT_COMPONENTS, &max_vertex_output);
+	GLint max_fragment_input;
+	glGetIntegerv(GL_MAX_FRAGMENT_INPUT_COMPONENTS, &max_fragment_input);
+	max_shader_varyings = (uint32_t)MIN(max_vertex_output, max_fragment_input) / 4;
+
+	// sanity clamp buffer size to 16K..1MB
+	max_uniform_buffer_size = CLAMP(max_uniform_buffer_size, 16384, 1048576);
+
+	support_anisotropic_filter = extensions.has("GL_EXT_texture_filter_anisotropic");
+	if (support_anisotropic_filter) {
+		glGetFloatv(_GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &anisotropic_level);
+		anisotropic_level = MIN(float(1 << int(GLOBAL_GET("rendering/textures/default_filters/anisotropic_filtering_level"))), anisotropic_level);
+	}
+
+	glGetIntegerv(GL_MAX_SAMPLES, &msaa_max_samples);
+#ifdef WEB_ENABLED
+	msaa_supported = (msaa_max_samples > 0);
+#else
+	msaa_supported = true;
+#endif
+#ifndef IOS_ENABLED
+#ifdef WEB_ENABLED
+	msaa_multiview_supported = extensions.has("OCULUS_multiview");
+	rt_msaa_multiview_supported = msaa_multiview_supported;
+#else
+	msaa_multiview_supported = extensions.has("GL_EXT_multiview_texture_multisample");
+#endif
+
+	multiview_supported = extensions.has("OCULUS_multiview") || extensions.has("GL_OVR_multiview2") || extensions.has("GL_OVR_multiview");
+#endif
+
+#ifdef ANDROID_ENABLED
+	// These are GLES only
+	rt_msaa_supported = extensions.has("GL_EXT_multisampled_render_to_texture");
+	rt_msaa_multiview_supported = extensions.has("GL_OVR_multiview_multisampled_render_to_texture");
+	external_texture_supported = extensions.has("GL_OES_EGL_image_external_essl3");
+
+	if (multiview_supported) {
+		eglFramebufferTextureMultiviewOVR = (PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC)eglGetProcAddress("glFramebufferTextureMultiviewOVR");
+		if (eglFramebufferTextureMultiviewOVR == nullptr) {
+			multiview_supported = false;
+		}
+	}
+
+	if (msaa_multiview_supported) {
+		eglTexStorage3DMultisample = (PFNGLTEXSTORAGE3DMULTISAMPLEPROC)eglGetProcAddress("glTexStorage3DMultisample");
+		if (eglTexStorage3DMultisample == nullptr) {
+			msaa_multiview_supported = false;
+		}
+	}
+
+	if (rt_msaa_supported) {
+		eglFramebufferTexture2DMultisampleEXT = (PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC)eglGetProcAddress("glFramebufferTexture2DMultisampleEXT");
+		if (eglFramebufferTexture2DMultisampleEXT == nullptr) {
+			rt_msaa_supported = false;
+		}
+	}
+
+	if (rt_msaa_multiview_supported) {
+		eglFramebufferTextureMultisampleMultiviewOVR = (PFNGLFRAMEBUFFERTEXTUREMULTISAMPLEMULTIVIEWOVRPROC)eglGetProcAddress("glFramebufferTextureMultisampleMultiviewOVR");
+		if (eglFramebufferTextureMultisampleMultiviewOVR == nullptr) {
+			rt_msaa_multiview_supported = false;
+		}
+	}
+
+	if (external_texture_supported) {
+		eglEGLImageTargetTexture2DOES = (PFNEGLIMAGETARGETTEXTURE2DOESPROC)eglGetProcAddress("glEGLImageTargetTexture2DOES");
+		if (eglEGLImageTargetTexture2DOES == nullptr) {
+			external_texture_supported = false;
+		}
+	}
+#endif
+
+	force_vertex_shading = GLOBAL_GET("rendering/shading/overrides/force_vertex_shading");
+	specular_occlusion = GLOBAL_GET("rendering/reflections/specular_occlusion/enabled");
+	use_nearest_mip_filter = GLOBAL_GET("rendering/textures/default_filters/use_nearest_mipmap_filter");
+
+	use_depth_prepass = bool(GLOBAL_GET("rendering/driver/depth_prepass/enable"));
+	if (use_depth_prepass) {
+		String vendors = GLOBAL_GET("rendering/driver/depth_prepass/disable_for_vendors");
+		Vector<String> vendor_match = vendors.split(",");
+		const String &renderer = String::utf8((const char *)glGetString(GL_RENDERER));
+		for (int i = 0; i < vendor_match.size(); i++) {
+			String v = vendor_match[i].strip_edges();
+			if (v == String()) {
+				continue;
+			}
+
+			if (renderer.containsn(v)) {
+				use_depth_prepass = false;
+			}
+		}
+	}
+
+	max_renderable_elements = GLOBAL_GET("rendering/limits/opengl/max_renderable_elements");
+	max_renderable_lights = GLOBAL_GET("rendering/limits/opengl/max_renderable_lights");
+	max_lights_per_object = GLOBAL_GET("rendering/limits/opengl/max_lights_per_object");
+
+	//Adreno 3xx Compatibility
+	const String rendering_device_name = String::utf8((const char *)glGetString(GL_RENDERER));
+	if (rendering_device_name.left(13) == "Adreno (TM) 3") {
+		disable_particles_workaround = true;
+
+		// ignore driver version 331+
+		const String gl_version = String::utf8((const char *)glGetString(GL_VERSION));
+		// Adreno 3xx examples (https://opengles.gpuinfo.org/listreports.php):
+		// ===========================================================================
+		// OpenGL ES 3.0 V@84.0 AU@ (CL@)
+		// OpenGL ES 3.0 V@127.0 AU@ (GIT@I96aee987eb)
+		// OpenGL ES 3.0 V@140.0 AU@ (GIT@Ifd751822f5)
+		// OpenGL ES 3.0 V@251.0 AU@08.00.00.312.030 (GIT@Ie4790512f3)
+		// OpenGL ES 3.0 V@269.0 AU@ (GIT@I109c45a694)
+		// OpenGL ES 3.0 V@331.0 (GIT@35e467f, Ice9844a736) (Date:04/15/19)
+		// OpenGL ES 3.0 V@415.0 (GIT@d39f783, I79de86aa2c, 1591296226) (Date:06/04/20)
+		// OpenGL ES 3.0 V@0502.0 (GIT@09fef447e8, I1fe547a144, 1661493934) (Date:08/25/22)
+		String driver_version = gl_version.get_slice("V@", 1).get_slicec(' ', 0);
+		if (driver_version.is_valid_float() && driver_version.to_float() >= 331.0) {
+			//TODO: also 'GPUParticles'?
+			//https://github.com/godotengine/godot/issues/92662#issuecomment-2161199477
+			//disable_particles_workaround = false;
+		}
+	} else if (rendering_device_name == "PowerVR Rogue GE8320") {
+		disable_transform_feedback_shader_cache = true;
+	}
+
+	if (OS::get_singleton()->get_current_rendering_driver_name() == "opengl3_angle") {
+		polyfill_half2float = false;
+	}
+#ifdef WEB_ENABLED
+	polyfill_half2float = false;
+#endif
+}
+
+Config::~Config() {
+	singleton = nullptr;
+}
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/config.h

@@ -0,0 +1,124 @@
+/**************************************************************************/
+/*  config.h                                                              */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "core/config/project_settings.h"
+#include "core/string/ustring.h"
+#include "core/templates/hash_set.h"
+
+#include "platform_gl.h"
+
+#ifdef ANDROID_ENABLED
+typedef void (*PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC)(GLenum, GLenum, GLuint, GLint, GLint, GLsizei);
+typedef void (*PFNGLTEXSTORAGE3DMULTISAMPLEPROC)(GLenum, GLsizei, GLenum, GLsizei, GLsizei, GLsizei, GLboolean);
+typedef void (*PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC)(GLenum, GLenum, GLenum, GLuint, GLint, GLsizei);
+typedef void (*PFNGLFRAMEBUFFERTEXTUREMULTISAMPLEMULTIVIEWOVRPROC)(GLenum, GLenum, GLuint, GLint, GLsizei, GLint, GLsizei);
+typedef void (*PFNEGLIMAGETARGETTEXTURE2DOESPROC)(GLenum, void *);
+#endif
+
+namespace GLES3 {
+
+class Config {
+private:
+	static Config *singleton;
+
+public:
+	bool use_nearest_mip_filter = false;
+	bool use_depth_prepass = true;
+
+	GLint max_vertex_texture_image_units = 0;
+	GLint max_texture_image_units = 0;
+	GLint max_texture_size = 0;
+	GLint max_viewport_size[2] = { 0, 0 };
+	GLint64 max_uniform_buffer_size = 0;
+	uint32_t max_shader_varyings = 0;
+
+	int64_t max_renderable_elements = 0;
+	int64_t max_renderable_lights = 0;
+	int64_t max_lights_per_object = 0;
+
+	bool generate_wireframes = false;
+
+	HashSet<String> extensions;
+
+	bool float_texture_supported = false;
+	bool float_texture_linear_supported = false;
+	bool s3tc_supported = false;
+	bool rgtc_supported = false;
+	bool bptc_supported = false;
+	bool etc2_supported = false;
+	bool astc_supported = false;
+	bool astc_hdr_supported = false;
+	bool astc_layered_supported = false;
+	bool srgb_framebuffer_supported = false;
+
+	bool force_vertex_shading = false;
+	bool specular_occlusion = false;
+
+	bool support_anisotropic_filter = false;
+	float anisotropic_level = 0.0f;
+
+	GLint msaa_max_samples = 0;
+	bool msaa_supported = false;
+	bool msaa_multiview_supported = false;
+	bool rt_msaa_supported = false;
+	bool rt_msaa_multiview_supported = false;
+	bool multiview_supported = false;
+	bool external_texture_supported = false;
+
+	// Adreno 3XX compatibility.
+	bool disable_particles_workaround = false; // Set to 'true' to disable 'GPUParticles'.
+
+	// PowerVR GE 8320 workaround.
+	bool disable_transform_feedback_shader_cache = false;
+
+	// ANGLE shader workaround.
+	bool polyfill_half2float = true;
+
+#ifdef ANDROID_ENABLED
+	PFNGLFRAMEBUFFERTEXTUREMULTIVIEWOVRPROC eglFramebufferTextureMultiviewOVR = nullptr;
+	PFNGLTEXSTORAGE3DMULTISAMPLEPROC eglTexStorage3DMultisample = nullptr;
+	PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC eglFramebufferTexture2DMultisampleEXT = nullptr;
+	PFNGLFRAMEBUFFERTEXTUREMULTISAMPLEMULTIVIEWOVRPROC eglFramebufferTextureMultisampleMultiviewOVR = nullptr;
+	PFNEGLIMAGETARGETTEXTURE2DOESPROC eglEGLImageTargetTexture2DOES = nullptr;
+#endif
+
+	static Config *get_singleton() { return singleton; }
+
+	Config();
+	~Config();
+};
+
+} // namespace GLES3
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/light_storage.h

@@ -0,0 +1,910 @@
+/**************************************************************************/
+/*  light_storage.h                                                       */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "platform_gl.h"
+#include "render_scene_buffers_gles3.h"
+
+#include "core/templates/local_vector.h"
+#include "core/templates/rid_owner.h"
+#include "drivers/gles3/storage/texture_storage.h"
+#include "servers/rendering/storage/light_storage.h"
+#include "servers/rendering/storage/utilities.h"
+
+namespace GLES3 {
+
+/* LIGHT */
+
+struct Light {
+	RS::LightType type;
+	float param[RS::LIGHT_PARAM_MAX];
+	Color color = Color(1, 1, 1, 1);
+	RID projector;
+	bool shadow = false;
+	bool negative = false;
+	bool reverse_cull = false;
+	RS::LightBakeMode bake_mode = RS::LIGHT_BAKE_DYNAMIC;
+	uint32_t max_sdfgi_cascade = 2;
+	uint32_t cull_mask = 0xFFFFFFFF;
+	uint32_t shadow_caster_mask = 0xFFFFFFFF;
+	bool distance_fade = false;
+	real_t distance_fade_begin = 40.0;
+	real_t distance_fade_shadow = 50.0;
+	real_t distance_fade_length = 10.0;
+	RS::LightOmniShadowMode omni_shadow_mode = RS::LIGHT_OMNI_SHADOW_DUAL_PARABOLOID;
+	RS::LightDirectionalShadowMode directional_shadow_mode = RS::LIGHT_DIRECTIONAL_SHADOW_ORTHOGONAL;
+	bool directional_blend_splits = false;
+	RS::LightDirectionalSkyMode directional_sky_mode = RS::LIGHT_DIRECTIONAL_SKY_MODE_LIGHT_AND_SKY;
+	uint64_t version = 0;
+
+	Dependency dependency;
+};
+
+/* Light instance */
+struct LightInstance {
+	struct ShadowTransform {
+		Projection camera;
+		Transform3D transform;
+		float farplane;
+		float split;
+		float bias_scale;
+		float shadow_texel_size;
+		float range_begin;
+		Rect2 atlas_rect;
+		Vector2 uv_scale;
+	};
+
+	ShadowTransform shadow_transform[6];
+	RS::LightType light_type = RS::LIGHT_DIRECTIONAL;
+
+	AABB aabb;
+	RID self;
+	RID light;
+	Transform3D transform;
+
+	uint64_t shadow_pass = 0;
+	uint64_t last_scene_pass = 0;
+	uint64_t last_scene_shadow_pass = 0;
+	uint64_t last_pass = 0;
+	uint32_t cull_mask = 0;
+	uint32_t light_directional_index = 0;
+
+	Rect2 directional_rect;
+
+	HashSet<RID> shadow_atlases; // Shadow atlases where this light is registered.
+
+	int32_t gl_id = -1;
+	int32_t shadow_id = -1;
+
+	LightInstance() {}
+};
+
+/* REFLECTION PROBE */
+
+struct ReflectionProbe {
+	RS::ReflectionProbeUpdateMode update_mode = RS::REFLECTION_PROBE_UPDATE_ONCE;
+	int resolution = 256;
+	float intensity = 1.0;
+	float blend_distance = 1.0;
+	RS::ReflectionProbeAmbientMode ambient_mode = RS::REFLECTION_PROBE_AMBIENT_ENVIRONMENT;
+	Color ambient_color;
+	float ambient_color_energy = 1.0;
+	float max_distance = 0;
+	Vector3 size = Vector3(20, 20, 20);
+	Vector3 origin_offset;
+	bool interior = false;
+	bool box_projection = false;
+	bool enable_shadows = false;
+	uint32_t cull_mask = (1 << 20) - 1;
+	uint32_t reflection_mask = (1 << 20) - 1;
+	float mesh_lod_threshold = 0.01;
+	float baked_exposure = 1.0;
+
+	Dependency dependency;
+};
+
+/* REFLECTION ATLAS */
+
+struct ReflectionAtlas {
+	int count = 0;
+	int size = 0;
+
+	int mipmap_count = 1; // number of mips, including original
+	int mipmap_size[8];
+	GLuint depth = 0;
+
+	struct Reflection {
+		RID owner;
+		GLuint color = 0;
+		GLuint radiance = 0;
+		GLuint fbos[7];
+	};
+	Vector<Reflection> reflections;
+
+	Ref<RenderSceneBuffersGLES3> render_buffers; // Further render buffers used.
+};
+
+/* REFLECTION PROBE INSTANCE */
+
+struct ReflectionProbeInstance {
+	RID probe;
+	int atlas_index = -1;
+	RID atlas;
+
+	bool dirty = true;
+	bool rendering = false;
+	int processing_layer = 0;
+
+	uint64_t last_pass = 0;
+	uint32_t cull_mask = 0;
+
+	Transform3D transform;
+};
+
+/* LIGHTMAP */
+
+struct Lightmap {
+	RID light_texture;
+	RID shadow_texture;
+	bool uses_spherical_harmonics = false;
+	bool interior = false;
+	AABB bounds = AABB(Vector3(), Vector3(1, 1, 1));
+	float baked_exposure = 1.0;
+	Vector2i light_texture_size;
+	int32_t array_index = -1; //unassigned
+	RS::ShadowmaskMode shadowmask_mode = RS::SHADOWMASK_MODE_NONE;
+	PackedVector3Array points;
+	PackedColorArray point_sh;
+	PackedInt32Array tetrahedra;
+	PackedInt32Array bsp_tree;
+
+	struct BSP {
+		static const int32_t EMPTY_LEAF = INT32_MIN;
+		float plane[4];
+		int32_t over = EMPTY_LEAF, under = EMPTY_LEAF;
+	};
+
+	Dependency dependency;
+};
+
+struct LightmapInstance {
+	RID lightmap;
+	Transform3D transform;
+};
+
+class LightStorage : public RendererLightStorage {
+public:
+	enum ShadowAtlastQuadrant : uint32_t {
+		QUADRANT_SHIFT = 27,
+		OMNI_LIGHT_FLAG = 1 << 26,
+		SHADOW_INDEX_MASK = OMNI_LIGHT_FLAG - 1,
+		SHADOW_INVALID = 0xFFFFFFFF
+	};
+
+private:
+	static LightStorage *singleton;
+
+	/* LIGHT */
+	mutable RID_Owner<Light, true> light_owner;
+
+	/* Light instance */
+	mutable RID_Owner<LightInstance> light_instance_owner;
+
+	/* REFLECTION PROBE */
+	mutable RID_Owner<ReflectionProbe, true> reflection_probe_owner;
+
+	/* REFLECTION ATLAS */
+	mutable RID_Owner<ReflectionAtlas> reflection_atlas_owner;
+
+	/* REFLECTION PROBE INSTANCE */
+
+	mutable RID_Owner<ReflectionProbeInstance> reflection_probe_instance_owner;
+
+	/* LIGHTMAP */
+	float lightmap_probe_capture_update_speed = 4;
+
+	mutable RID_Owner<Lightmap, true> lightmap_owner;
+
+	/* LIGHTMAP INSTANCE */
+
+	mutable RID_Owner<LightmapInstance> lightmap_instance_owner;
+
+	/* SHADOW ATLAS */
+
+	// Note: The ShadowAtlas in the OpenGL is virtual. Each light gets assigned its
+	// own texture which is the same size as it would be if it were in a real atlas.
+	// This allows us to maintain the same behavior as the other renderers.
+
+	struct ShadowAtlas {
+		struct Quadrant {
+			uint32_t subdivision = 0;
+
+			struct Shadow {
+				RID owner;
+				bool owner_is_omni = false;
+				uint64_t version = 0;
+				uint64_t alloc_tick = 0;
+
+				Shadow() {}
+			};
+
+			Vector<Shadow> shadows;
+			LocalVector<GLuint> textures;
+			LocalVector<GLuint> fbos;
+
+			Quadrant() {}
+		} quadrants[4];
+
+		// Ordered from smallest (worst) shadow size to largest (best).
+		int size_order[4] = { 0, 1, 2, 3 };
+		uint32_t smallest_subdiv = 0;
+
+		int size = 0;
+		bool use_16_bits = true;
+
+		GLuint debug_texture = 0;
+		GLuint debug_fbo = 0;
+
+		HashMap<RID, uint32_t> shadow_owners;
+	};
+
+	uint64_t shadow_atlas_realloc_tolerance_msec = 500;
+	RID_Owner<ShadowAtlas> shadow_atlas_owner;
+
+	void _shadow_atlas_invalidate_shadow(ShadowAtlas::Quadrant::Shadow *p_shadow, RID p_atlas, ShadowAtlas *p_shadow_atlas, uint32_t p_quadrant, uint32_t p_shadow_idx);
+	bool _shadow_atlas_find_shadow(ShadowAtlas *shadow_atlas, int *p_in_quadrants, int p_quadrant_count, int p_current_subdiv, uint64_t p_tick, bool p_omni, int &r_quadrant, int &r_shadow);
+
+	/* DIRECTIONAL SHADOW */
+
+	struct DirectionalShadow {
+		GLuint depth = 0;
+		GLuint fbo = 0;
+
+		int light_count = 0;
+		int size = 0;
+		bool use_16_bits = true;
+		int current_light = 0;
+	} directional_shadow;
+
+public:
+	static LightStorage *get_singleton();
+
+	LightStorage();
+	virtual ~LightStorage();
+
+	/* Light API */
+
+	Light *get_light(RID p_rid) { return light_owner.get_or_null(p_rid); }
+	bool owns_light(RID p_rid) { return light_owner.owns(p_rid); }
+
+	void _light_initialize(RID p_rid, RS::LightType p_type);
+
+	virtual RID directional_light_allocate() override;
+	virtual void directional_light_initialize(RID p_rid) override;
+	virtual RID omni_light_allocate() override;
+	virtual void omni_light_initialize(RID p_rid) override;
+	virtual RID spot_light_allocate() override;
+	virtual void spot_light_initialize(RID p_rid) override;
+
+	virtual void light_free(RID p_rid) override;
+
+	virtual void light_set_color(RID p_light, const Color &p_color) override;
+	virtual void light_set_param(RID p_light, RS::LightParam p_param, float p_value) override;
+	virtual void light_set_shadow(RID p_light, bool p_enabled) override;
+	virtual void light_set_projector(RID p_light, RID p_texture) override;
+	virtual void light_set_negative(RID p_light, bool p_enable) override;
+	virtual void light_set_cull_mask(RID p_light, uint32_t p_mask) override;
+	virtual void light_set_distance_fade(RID p_light, bool p_enabled, float p_begin, float p_shadow, float p_length) override;
+	virtual void light_set_reverse_cull_face_mode(RID p_light, bool p_enabled) override;
+	virtual void light_set_shadow_caster_mask(RID p_light, uint32_t p_caster_mask) override;
+	virtual uint32_t light_get_shadow_caster_mask(RID p_light) const override;
+	virtual void light_set_bake_mode(RID p_light, RS::LightBakeMode p_bake_mode) override;
+	virtual void light_set_max_sdfgi_cascade(RID p_light, uint32_t p_cascade) override {}
+
+	virtual void light_omni_set_shadow_mode(RID p_light, RS::LightOmniShadowMode p_mode) override;
+
+	virtual void light_directional_set_shadow_mode(RID p_light, RS::LightDirectionalShadowMode p_mode) override;
+	virtual void light_directional_set_blend_splits(RID p_light, bool p_enable) override;
+	virtual bool light_directional_get_blend_splits(RID p_light) const override;
+	virtual void light_directional_set_sky_mode(RID p_light, RS::LightDirectionalSkyMode p_mode) override;
+	virtual RS::LightDirectionalSkyMode light_directional_get_sky_mode(RID p_light) const override;
+
+	virtual RS::LightDirectionalShadowMode light_directional_get_shadow_mode(RID p_light) override;
+	virtual RS::LightOmniShadowMode light_omni_get_shadow_mode(RID p_light) override;
+	virtual RS::LightType light_get_type(RID p_light) const override {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, RS::LIGHT_DIRECTIONAL);
+
+		return light->type;
+	}
+	virtual AABB light_get_aabb(RID p_light) const override;
+
+	virtual float light_get_param(RID p_light, RS::LightParam p_param) override {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, 0);
+
+		return light->param[p_param];
+	}
+
+	_FORCE_INLINE_ RID light_get_projector(RID p_light) {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, RID());
+
+		return light->projector;
+	}
+
+	virtual Color light_get_color(RID p_light) override {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, Color());
+
+		return light->color;
+	}
+
+	_FORCE_INLINE_ bool light_is_distance_fade_enabled(RID p_light) {
+		const Light *light = light_owner.get_or_null(p_light);
+		return light->distance_fade;
+	}
+
+	_FORCE_INLINE_ float light_get_distance_fade_begin(RID p_light) {
+		const Light *light = light_owner.get_or_null(p_light);
+		return light->distance_fade_begin;
+	}
+
+	_FORCE_INLINE_ float light_get_distance_fade_shadow(RID p_light) {
+		const Light *light = light_owner.get_or_null(p_light);
+		return light->distance_fade_shadow;
+	}
+
+	_FORCE_INLINE_ float light_get_distance_fade_length(RID p_light) {
+		const Light *light = light_owner.get_or_null(p_light);
+		return light->distance_fade_length;
+	}
+
+	virtual bool light_has_shadow(RID p_light) const override {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, RS::LIGHT_DIRECTIONAL);
+
+		return light->shadow;
+	}
+
+	virtual bool light_has_projector(RID p_light) const override {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, RS::LIGHT_DIRECTIONAL);
+
+		return TextureStorage::get_singleton()->owns_texture(light->projector);
+	}
+
+	_FORCE_INLINE_ bool light_is_negative(RID p_light) const {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, RS::LIGHT_DIRECTIONAL);
+
+		return light->negative;
+	}
+
+	_FORCE_INLINE_ float light_get_transmittance_bias(RID p_light) const {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, 0.0);
+
+		return light->param[RS::LIGHT_PARAM_TRANSMITTANCE_BIAS];
+	}
+
+	virtual bool light_get_reverse_cull_face_mode(RID p_light) const override {
+		const Light *light = light_owner.get_or_null(p_light);
+		ERR_FAIL_NULL_V(light, false);
+
+		return light->reverse_cull;
+	}
+
+	virtual RS::LightBakeMode light_get_bake_mode(RID p_light) override;
+	virtual uint32_t light_get_max_sdfgi_cascade(RID p_light) override { return 0; }
+	virtual uint64_t light_get_version(RID p_light) const override;
+	virtual uint32_t light_get_cull_mask(RID p_light) const override;
+
+	/* LIGHT INSTANCE API */
+
+	LightInstance *get_light_instance(RID p_rid) { return light_instance_owner.get_or_null(p_rid); }
+	bool owns_light_instance(RID p_rid) { return light_instance_owner.owns(p_rid); }
+
+	virtual RID light_instance_create(RID p_light) override;
+	virtual void light_instance_free(RID p_light_instance) override;
+
+	virtual void light_instance_set_transform(RID p_light_instance, const Transform3D &p_transform) override;
+	virtual void light_instance_set_aabb(RID p_light_instance, const AABB &p_aabb) override;
+	virtual void light_instance_set_shadow_transform(RID p_light_instance, const Projection &p_projection, const Transform3D &p_transform, float p_far, float p_split, int p_pass, float p_shadow_texel_size, float p_bias_scale = 1.0, float p_range_begin = 0, const Vector2 &p_uv_scale = Vector2()) override;
+	virtual void light_instance_mark_visible(RID p_light_instance) override;
+
+	virtual bool light_instance_is_shadow_visible_at_position(RID p_light_instance, const Vector3 &p_position) const override {
+		const LightInstance *light_instance = light_instance_owner.get_or_null(p_light_instance);
+		ERR_FAIL_NULL_V(light_instance, false);
+		const Light *light = light_owner.get_or_null(light_instance->light);
+		ERR_FAIL_NULL_V(light, false);
+
+		if (!light->shadow) {
+			return false;
+		}
+
+		if (!light->distance_fade) {
+			return true;
+		}
+
+		real_t distance = p_position.distance_to(light_instance->transform.origin);
+
+		if (distance > light->distance_fade_shadow + light->distance_fade_length) {
+			return false;
+		}
+
+		return true;
+	}
+
+	_FORCE_INLINE_ RID light_instance_get_base_light(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->light;
+	}
+
+	_FORCE_INLINE_ Transform3D light_instance_get_base_transform(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->transform;
+	}
+
+	_FORCE_INLINE_ AABB light_instance_get_base_aabb(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->aabb;
+	}
+
+	_FORCE_INLINE_ void light_instance_set_cull_mask(RID p_light_instance, uint32_t p_cull_mask) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		li->cull_mask = p_cull_mask;
+	}
+
+	_FORCE_INLINE_ uint32_t light_instance_get_cull_mask(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->cull_mask;
+	}
+
+	_FORCE_INLINE_ GLuint light_instance_get_shadow_texture(RID p_light_instance, RID p_shadow_atlas) {
+#ifdef DEBUG_ENABLED
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		ERR_FAIL_COND_V(!li->shadow_atlases.has(p_shadow_atlas), 0);
+#endif
+		ShadowAtlas *shadow_atlas = shadow_atlas_owner.get_or_null(p_shadow_atlas);
+		ERR_FAIL_NULL_V(shadow_atlas, 0);
+#ifdef DEBUG_ENABLED
+		ERR_FAIL_COND_V(!shadow_atlas->shadow_owners.has(p_light_instance), 0);
+#endif
+		uint32_t key = shadow_atlas->shadow_owners[p_light_instance];
+
+		uint32_t quadrant = (key >> QUADRANT_SHIFT) & 0x3;
+		uint32_t shadow = key & SHADOW_INDEX_MASK;
+
+		ERR_FAIL_COND_V(shadow >= (uint32_t)shadow_atlas->quadrants[quadrant].shadows.size(), 0);
+
+		return shadow_atlas_get_quadrant_shadow_texture(p_shadow_atlas, quadrant, shadow);
+	}
+
+	_FORCE_INLINE_ bool light_instance_has_shadow_atlas(RID p_light_instance, RID p_shadow_atlas) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_atlases.has(p_shadow_atlas);
+	}
+
+	_FORCE_INLINE_ float light_instance_get_shadow_texel_size(RID p_light_instance, RID p_shadow_atlas) {
+#ifdef DEBUG_ENABLED
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		ERR_FAIL_COND_V(!li->shadow_atlases.has(p_shadow_atlas), 0);
+#endif
+		ShadowAtlas *shadow_atlas = shadow_atlas_owner.get_or_null(p_shadow_atlas);
+		ERR_FAIL_NULL_V(shadow_atlas, 0);
+#ifdef DEBUG_ENABLED
+		ERR_FAIL_COND_V(!shadow_atlas->shadow_owners.has(p_light_instance), 0);
+#endif
+		uint32_t key = shadow_atlas->shadow_owners[p_light_instance];
+
+		uint32_t quadrant = (key >> QUADRANT_SHIFT) & 0x3;
+
+		uint32_t quadrant_size = shadow_atlas->size >> 1;
+
+		uint32_t shadow_size = (quadrant_size / shadow_atlas->quadrants[quadrant].subdivision);
+
+		return float(1.0) / shadow_size;
+	}
+
+	_FORCE_INLINE_ Projection light_instance_get_shadow_camera(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].camera;
+	}
+
+	_FORCE_INLINE_ Transform3D light_instance_get_shadow_transform(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].transform;
+	}
+	_FORCE_INLINE_ float light_instance_get_shadow_bias_scale(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].bias_scale;
+	}
+	_FORCE_INLINE_ float light_instance_get_shadow_range(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].farplane;
+	}
+	_FORCE_INLINE_ float light_instance_get_shadow_range_begin(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].range_begin;
+	}
+
+	_FORCE_INLINE_ Vector2 light_instance_get_shadow_uv_scale(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].uv_scale;
+	}
+
+	_FORCE_INLINE_ void light_instance_set_directional_shadow_atlas_rect(RID p_light_instance, int p_index, const Rect2 p_atlas_rect) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		li->shadow_transform[p_index].atlas_rect = p_atlas_rect;
+	}
+
+	_FORCE_INLINE_ Rect2 light_instance_get_directional_shadow_atlas_rect(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].atlas_rect;
+	}
+
+	_FORCE_INLINE_ float light_instance_get_directional_shadow_split(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].split;
+	}
+
+	_FORCE_INLINE_ float light_instance_get_directional_shadow_texel_size(RID p_light_instance, int p_index) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_transform[p_index].shadow_texel_size;
+	}
+
+	_FORCE_INLINE_ void light_instance_set_render_pass(RID p_light_instance, uint64_t p_pass) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		li->last_pass = p_pass;
+	}
+
+	_FORCE_INLINE_ uint64_t light_instance_get_render_pass(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->last_pass;
+	}
+
+	_FORCE_INLINE_ void light_instance_set_shadow_pass(RID p_light_instance, uint64_t p_pass) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		li->last_scene_shadow_pass = p_pass;
+	}
+
+	_FORCE_INLINE_ uint64_t light_instance_get_shadow_pass(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->last_scene_shadow_pass;
+	}
+
+	_FORCE_INLINE_ void light_instance_set_directional_rect(RID p_light_instance, const Rect2 &p_directional_rect) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		li->directional_rect = p_directional_rect;
+	}
+
+	_FORCE_INLINE_ Rect2 light_instance_get_directional_rect(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->directional_rect;
+	}
+
+	_FORCE_INLINE_ RS::LightType light_instance_get_type(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->light_type;
+	}
+
+	_FORCE_INLINE_ int32_t light_instance_get_gl_id(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->gl_id;
+	}
+
+	_FORCE_INLINE_ int32_t light_instance_get_shadow_id(RID p_light_instance) {
+		LightInstance *li = light_instance_owner.get_or_null(p_light_instance);
+		return li->shadow_id;
+	}
+
+	/* PROBE API */
+
+	ReflectionProbe *get_reflection_probe(RID p_rid) { return reflection_probe_owner.get_or_null(p_rid); }
+	bool owns_reflection_probe(RID p_rid) { return reflection_probe_owner.owns(p_rid); }
+
+	virtual RID reflection_probe_allocate() override;
+	virtual void reflection_probe_initialize(RID p_rid) override;
+	virtual void reflection_probe_free(RID p_rid) override;
+
+	virtual void reflection_probe_set_update_mode(RID p_probe, RS::ReflectionProbeUpdateMode p_mode) override;
+	virtual void reflection_probe_set_intensity(RID p_probe, float p_intensity) override;
+	virtual void reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) override;
+	virtual void reflection_probe_set_ambient_mode(RID p_probe, RS::ReflectionProbeAmbientMode p_mode) override;
+	virtual void reflection_probe_set_ambient_color(RID p_probe, const Color &p_color) override;
+	virtual void reflection_probe_set_ambient_energy(RID p_probe, float p_energy) override;
+	virtual void reflection_probe_set_max_distance(RID p_probe, float p_distance) override;
+	virtual void reflection_probe_set_size(RID p_probe, const Vector3 &p_size) override;
+	virtual void reflection_probe_set_origin_offset(RID p_probe, const Vector3 &p_offset) override;
+	virtual void reflection_probe_set_as_interior(RID p_probe, bool p_enable) override;
+	virtual void reflection_probe_set_enable_box_projection(RID p_probe, bool p_enable) override;
+	virtual void reflection_probe_set_enable_shadows(RID p_probe, bool p_enable) override;
+	virtual void reflection_probe_set_cull_mask(RID p_probe, uint32_t p_layers) override;
+	virtual void reflection_probe_set_reflection_mask(RID p_probe, uint32_t p_layers) override;
+	virtual void reflection_probe_set_resolution(RID p_probe, int p_resolution) override;
+	virtual void reflection_probe_set_mesh_lod_threshold(RID p_probe, float p_ratio) override;
+	virtual float reflection_probe_get_mesh_lod_threshold(RID p_probe) const override;
+
+	virtual AABB reflection_probe_get_aabb(RID p_probe) const override;
+	virtual RS::ReflectionProbeUpdateMode reflection_probe_get_update_mode(RID p_probe) const override;
+	virtual uint32_t reflection_probe_get_cull_mask(RID p_probe) const override;
+	virtual uint32_t reflection_probe_get_reflection_mask(RID p_probe) const override;
+	virtual Vector3 reflection_probe_get_size(RID p_probe) const override;
+	virtual Vector3 reflection_probe_get_origin_offset(RID p_probe) const override;
+	virtual float reflection_probe_get_origin_max_distance(RID p_probe) const override;
+	virtual bool reflection_probe_renders_shadows(RID p_probe) const override;
+
+	Dependency *reflection_probe_get_dependency(RID p_probe) const;
+
+	/* REFLECTION ATLAS */
+
+	bool owns_reflection_atlas(RID p_rid) { return reflection_atlas_owner.owns(p_rid); }
+
+	virtual RID reflection_atlas_create() override;
+	virtual void reflection_atlas_free(RID p_ref_atlas) override;
+	virtual int reflection_atlas_get_size(RID p_ref_atlas) const override;
+	virtual void reflection_atlas_set_size(RID p_ref_atlas, int p_reflection_size, int p_reflection_count) override;
+
+	/* REFLECTION PROBE INSTANCE */
+
+	bool owns_reflection_probe_instance(RID p_rid) { return reflection_probe_instance_owner.owns(p_rid); }
+
+	virtual RID reflection_probe_instance_create(RID p_probe) override;
+	virtual void reflection_probe_instance_free(RID p_instance) override;
+	virtual void reflection_probe_instance_set_transform(RID p_instance, const Transform3D &p_transform) override;
+	virtual bool reflection_probe_has_atlas_index(RID p_instance) override;
+	virtual void reflection_probe_release_atlas_index(RID p_instance) override;
+	virtual bool reflection_probe_instance_needs_redraw(RID p_instance) override;
+	virtual bool reflection_probe_instance_has_reflection(RID p_instance) override;
+	virtual bool reflection_probe_instance_begin_render(RID p_instance, RID p_reflection_atlas) override;
+	virtual Ref<RenderSceneBuffers> reflection_probe_atlas_get_render_buffers(RID p_reflection_atlas) override;
+	virtual bool reflection_probe_instance_postprocess_step(RID p_instance) override;
+
+	_FORCE_INLINE_ RID reflection_probe_instance_get_probe(RID p_instance) {
+		ReflectionProbeInstance *rpi = reflection_probe_instance_owner.get_or_null(p_instance);
+		ERR_FAIL_NULL_V(rpi, RID());
+
+		return rpi->probe;
+	}
+	_FORCE_INLINE_ RID reflection_probe_instance_get_atlas(RID p_instance) {
+		ReflectionProbeInstance *rpi = reflection_probe_instance_owner.get_or_null(p_instance);
+		ERR_FAIL_NULL_V(rpi, RID());
+
+		return rpi->atlas;
+	}
+	Transform3D reflection_probe_instance_get_transform(RID p_instance) {
+		ReflectionProbeInstance *rpi = reflection_probe_instance_owner.get_or_null(p_instance);
+		ERR_FAIL_NULL_V(rpi, Transform3D());
+
+		return rpi->transform;
+	}
+	GLuint reflection_probe_instance_get_texture(RID p_instance);
+	GLuint reflection_probe_instance_get_framebuffer(RID p_instance, int p_index);
+
+	/* LIGHTMAP CAPTURE */
+
+	Lightmap *get_lightmap(RID p_rid) { return lightmap_owner.get_or_null(p_rid); }
+	bool owns_lightmap(RID p_rid) { return lightmap_owner.owns(p_rid); }
+
+	virtual RID lightmap_allocate() override;
+	virtual void lightmap_initialize(RID p_rid) override;
+	virtual void lightmap_free(RID p_rid) override;
+
+	virtual void lightmap_set_textures(RID p_lightmap, RID p_light, bool p_uses_spherical_haromics) override;
+	virtual void lightmap_set_probe_bounds(RID p_lightmap, const AABB &p_bounds) override;
+	virtual void lightmap_set_probe_interior(RID p_lightmap, bool p_interior) override;
+	virtual void lightmap_set_probe_capture_data(RID p_lightmap, const PackedVector3Array &p_points, const PackedColorArray &p_point_sh, const PackedInt32Array &p_tetrahedra, const PackedInt32Array &p_bsp_tree) override;
+	virtual void lightmap_set_baked_exposure_normalization(RID p_lightmap, float p_exposure) override;
+	virtual PackedVector3Array lightmap_get_probe_capture_points(RID p_lightmap) const override;
+	virtual PackedColorArray lightmap_get_probe_capture_sh(RID p_lightmap) const override;
+	virtual PackedInt32Array lightmap_get_probe_capture_tetrahedra(RID p_lightmap) const override;
+	virtual PackedInt32Array lightmap_get_probe_capture_bsp_tree(RID p_lightmap) const override;
+	virtual AABB lightmap_get_aabb(RID p_lightmap) const override;
+	virtual void lightmap_tap_sh_light(RID p_lightmap, const Vector3 &p_point, Color *r_sh) override;
+	virtual bool lightmap_is_interior(RID p_lightmap) const override;
+	virtual void lightmap_set_probe_capture_update_speed(float p_speed) override;
+	virtual float lightmap_get_probe_capture_update_speed() const override;
+
+	virtual void lightmap_set_shadowmask_textures(RID p_lightmap, RID p_shadow) override;
+	virtual RS::ShadowmaskMode lightmap_get_shadowmask_mode(RID p_lightmap) override;
+	virtual void lightmap_set_shadowmask_mode(RID p_lightmap, RS::ShadowmaskMode p_mode) override;
+
+	/* LIGHTMAP INSTANCE */
+
+	LightmapInstance *get_lightmap_instance(RID p_rid) { return lightmap_instance_owner.get_or_null(p_rid); }
+	bool owns_lightmap_instance(RID p_rid) { return lightmap_instance_owner.owns(p_rid); }
+
+	virtual RID lightmap_instance_create(RID p_lightmap) override;
+	virtual void lightmap_instance_free(RID p_lightmap) override;
+	virtual void lightmap_instance_set_transform(RID p_lightmap, const Transform3D &p_transform) override;
+
+	/* SHADOW ATLAS API */
+	bool owns_shadow_atlas(RID p_rid) { return shadow_atlas_owner.owns(p_rid); }
+
+	virtual RID shadow_atlas_create() override;
+	virtual void shadow_atlas_free(RID p_atlas) override;
+	virtual void shadow_atlas_set_size(RID p_atlas, int p_size, bool p_16_bits = true) override;
+	virtual void shadow_atlas_set_quadrant_subdivision(RID p_atlas, int p_quadrant, int p_subdivision) override;
+	virtual bool shadow_atlas_update_light(RID p_atlas, RID p_light_instance, float p_coverage, uint64_t p_light_version) override;
+
+	_FORCE_INLINE_ bool shadow_atlas_owns_light_instance(RID p_atlas, RID p_light_instance) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, false);
+		return atlas->shadow_owners.has(p_light_instance);
+	}
+	_FORCE_INLINE_ uint32_t shadow_atlas_get_light_instance_key(RID p_atlas, RID p_light_instance) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, -1);
+		return atlas->shadow_owners[p_light_instance];
+	}
+
+	_FORCE_INLINE_ int shadow_atlas_get_size(RID p_atlas) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+		return atlas->size;
+	}
+
+	_FORCE_INLINE_ GLuint shadow_atlas_get_debug_fb(RID p_atlas) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+
+		if (atlas->debug_fbo != 0) {
+			return atlas->debug_fbo;
+		}
+		glGenFramebuffers(1, &atlas->debug_fbo);
+		glBindFramebuffer(GL_FRAMEBUFFER, atlas->debug_fbo);
+
+		if (atlas->debug_texture == 0) {
+			atlas->debug_texture = shadow_atlas_get_debug_texture(p_atlas);
+		}
+
+		glActiveTexture(GL_TEXTURE0);
+		glBindTexture(GL_TEXTURE_2D, atlas->debug_texture);
+
+		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, atlas->debug_texture, 0);
+
+		glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+
+		return atlas->debug_fbo;
+	}
+
+	_FORCE_INLINE_ GLuint shadow_atlas_get_debug_texture(RID p_atlas) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+
+		if (atlas->debug_texture != 0) {
+			return atlas->debug_texture;
+		}
+
+		glGenTextures(1, &atlas->debug_texture);
+		glActiveTexture(GL_TEXTURE0);
+		glBindTexture(GL_TEXTURE_2D, atlas->debug_texture);
+
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, atlas->size, atlas->size, 0, GL_RED, GL_UNSIGNED_INT, nullptr);
+
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_RED);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ONE);
+
+		glBindTexture(GL_TEXTURE_2D, 0);
+
+		return atlas->debug_texture;
+	}
+
+	_FORCE_INLINE_ int shadow_atlas_get_quadrant_shadows_length(RID p_atlas, uint32_t p_quadrant) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_quadrant, 4, 0);
+		return atlas->quadrants[p_quadrant].shadows.size();
+	}
+
+	_FORCE_INLINE_ uint32_t shadow_atlas_get_quadrant_shadows_allocated(RID p_atlas, uint32_t p_quadrant) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_quadrant, 4, 0);
+		return atlas->quadrants[p_quadrant].textures.size();
+	}
+
+	_FORCE_INLINE_ uint32_t shadow_atlas_get_quadrant_subdivision(RID p_atlas, uint32_t p_quadrant) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_quadrant, 4, 0);
+		return atlas->quadrants[p_quadrant].subdivision;
+	}
+
+	_FORCE_INLINE_ GLuint shadow_atlas_get_quadrant_shadow_texture(RID p_atlas, uint32_t p_quadrant, uint32_t p_shadow) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_quadrant, 4, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_shadow, atlas->quadrants[p_quadrant].textures.size(), 0);
+		return atlas->quadrants[p_quadrant].textures[p_shadow];
+	}
+
+	_FORCE_INLINE_ GLuint shadow_atlas_get_quadrant_shadow_fb(RID p_atlas, uint32_t p_quadrant, uint32_t p_shadow) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_quadrant, 4, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_shadow, atlas->quadrants[p_quadrant].fbos.size(), 0);
+		return atlas->quadrants[p_quadrant].fbos[p_shadow];
+	}
+
+	_FORCE_INLINE_ int shadow_atlas_get_quadrant_shadow_size(RID p_atlas, uint32_t p_quadrant) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, 0);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_quadrant, 4, 0);
+		return (atlas->size >> 1) / atlas->quadrants[p_quadrant].subdivision;
+	}
+
+	_FORCE_INLINE_ bool shadow_atlas_get_quadrant_shadow_is_omni(RID p_atlas, uint32_t p_quadrant, uint32_t p_shadow) {
+		ShadowAtlas *atlas = shadow_atlas_owner.get_or_null(p_atlas);
+		ERR_FAIL_NULL_V(atlas, false);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_quadrant, 4, false);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_shadow, (uint32_t)atlas->quadrants[p_quadrant].shadows.size(), false);
+		return atlas->quadrants[p_quadrant].shadows[p_shadow].owner_is_omni;
+	}
+
+	virtual void shadow_atlas_update(RID p_atlas) override;
+
+	virtual void directional_shadow_atlas_set_size(int p_size, bool p_16_bits = true) override;
+	virtual int get_directional_light_shadow_size(RID p_light_instance) override;
+	virtual void set_directional_shadow_count(int p_count) override;
+
+	Rect2i get_directional_shadow_rect();
+	void update_directional_shadow_atlas();
+
+	_FORCE_INLINE_ GLuint directional_shadow_get_texture() {
+		return directional_shadow.depth;
+	}
+
+	_FORCE_INLINE_ int directional_shadow_get_size() {
+		return directional_shadow.size;
+	}
+
+	_FORCE_INLINE_ GLuint direction_shadow_get_fb() {
+		return directional_shadow.fbo;
+	}
+
+	_FORCE_INLINE_ void directional_shadow_increase_current_light() {
+		directional_shadow.current_light++;
+	}
+};
+
+} // namespace GLES3
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/material_storage.h

@@ -0,0 +1,663 @@
+/**************************************************************************/
+/*  material_storage.h                                                    */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "core/templates/rid_owner.h"
+#include "core/templates/self_list.h"
+#include "servers/rendering/shader_compiler.h"
+#include "servers/rendering/shader_language.h"
+#include "servers/rendering/storage/material_storage.h"
+#include "servers/rendering/storage/utilities.h"
+
+#include "drivers/gles3/shaders/canvas.glsl.gen.h"
+#include "drivers/gles3/shaders/particles.glsl.gen.h"
+#include "drivers/gles3/shaders/scene.glsl.gen.h"
+#include "drivers/gles3/shaders/sky.glsl.gen.h"
+
+namespace GLES3 {
+
+/* Shader Structs */
+
+struct ShaderData {
+	String path;
+	HashMap<StringName, ShaderLanguage::ShaderNode::Uniform> uniforms;
+	HashMap<StringName, HashMap<int, RID>> default_texture_params;
+
+	virtual void set_path_hint(const String &p_hint);
+	virtual void set_default_texture_parameter(const StringName &p_name, RID p_texture, int p_index);
+	virtual Variant get_default_parameter(const StringName &p_parameter) const;
+	virtual void get_shader_uniform_list(List<PropertyInfo> *p_param_list) const;
+	virtual void get_instance_param_list(List<RendererMaterialStorage::InstanceShaderParam> *p_param_list) const;
+	virtual bool is_parameter_texture(const StringName &p_param) const;
+
+	virtual void set_code(const String &p_Code) = 0;
+	virtual bool is_animated() const = 0;
+	virtual bool casts_shadows() const = 0;
+	virtual RS::ShaderNativeSourceCode get_native_source_code() const { return RS::ShaderNativeSourceCode(); }
+
+	virtual ~ShaderData() {}
+};
+
+typedef ShaderData *(*ShaderDataRequestFunction)();
+
+struct Material;
+
+struct Shader {
+	ShaderData *data = nullptr;
+	String code;
+	String path_hint;
+	RS::ShaderMode mode;
+	HashMap<StringName, HashMap<int, RID>> default_texture_parameter;
+	HashSet<Material *> owners;
+};
+
+/* Material structs */
+
+struct MaterialData {
+	void update_uniform_buffer(const HashMap<StringName, ShaderLanguage::ShaderNode::Uniform> &p_uniforms, const uint32_t *p_uniform_offsets, const HashMap<StringName, Variant> &p_parameters, uint8_t *p_buffer, uint32_t p_buffer_size);
+	void update_textures(const HashMap<StringName, Variant> &p_parameters, const HashMap<StringName, HashMap<int, RID>> &p_default_textures, const Vector<ShaderCompiler::GeneratedCode::Texture> &p_texture_uniforms, RID *p_textures, bool p_use_linear_color);
+
+	virtual void set_render_priority(int p_priority) = 0;
+	virtual void set_next_pass(RID p_pass) = 0;
+	virtual void update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty) = 0;
+	virtual void bind_uniforms() = 0;
+	virtual ~MaterialData();
+
+	// Used internally by all Materials
+	void update_parameters_internal(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty, const HashMap<StringName, ShaderLanguage::ShaderNode::Uniform> &p_uniforms, const uint32_t *p_uniform_offsets, const Vector<ShaderCompiler::GeneratedCode::Texture> &p_texture_uniforms, const HashMap<StringName, HashMap<int, RID>> &p_default_texture_params, uint32_t p_ubo_size, bool p_is_3d_shader_type);
+
+protected:
+	Vector<uint8_t> ubo_data;
+	GLuint uniform_buffer = GLuint(0);
+	Vector<RID> texture_cache;
+
+private:
+	friend class MaterialStorage;
+	RID self;
+	List<RID>::Element *global_buffer_E = nullptr;
+	List<RID>::Element *global_texture_E = nullptr;
+	uint64_t global_textures_pass = 0;
+	HashMap<StringName, uint64_t> used_global_textures;
+};
+
+typedef MaterialData *(*MaterialDataRequestFunction)(ShaderData *);
+
+struct Material {
+	RID self;
+	MaterialData *data = nullptr;
+	Shader *shader = nullptr;
+	//shortcut to shader data and type
+	RS::ShaderMode shader_mode = RS::SHADER_MAX;
+	uint32_t shader_id = 0;
+	bool uniform_dirty = false;
+	bool texture_dirty = false;
+	HashMap<StringName, Variant> params;
+	int32_t priority = 0;
+	RID next_pass;
+	SelfList<Material> update_element;
+
+	Dependency dependency;
+
+	Material() :
+			update_element(this) {}
+};
+
+/* CanvasItem Materials */
+
+struct CanvasShaderData : public ShaderData {
+	enum BlendMode { // Used internally.
+		BLEND_MODE_MIX,
+		BLEND_MODE_ADD,
+		BLEND_MODE_SUB,
+		BLEND_MODE_MUL,
+		BLEND_MODE_PMALPHA,
+		BLEND_MODE_DISABLED,
+		BLEND_MODE_LCD,
+	};
+
+	// All these members are (re)initialized in `set_code`.
+	// Make sure to add the init to `set_code` whenever adding new members.
+
+	bool valid;
+	RID version;
+
+	Vector<ShaderCompiler::GeneratedCode::Texture> texture_uniforms;
+
+	Vector<uint32_t> ubo_offsets;
+	uint32_t ubo_size;
+
+	String code;
+
+	BlendMode blend_mode;
+
+	bool uses_screen_texture;
+	bool uses_screen_texture_mipmaps;
+	bool uses_sdf;
+	bool uses_time;
+	bool uses_custom0;
+	bool uses_custom1;
+
+	uint64_t vertex_input_mask;
+
+	virtual void set_code(const String &p_Code);
+	virtual bool is_animated() const;
+	virtual bool casts_shadows() const;
+	virtual RS::ShaderNativeSourceCode get_native_source_code() const;
+
+	CanvasShaderData();
+	virtual ~CanvasShaderData();
+};
+
+ShaderData *_create_canvas_shader_func();
+
+struct CanvasMaterialData : public MaterialData {
+	CanvasShaderData *shader_data = nullptr;
+
+	virtual void set_render_priority(int p_priority) {}
+	virtual void set_next_pass(RID p_pass) {}
+	virtual void update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
+	virtual void bind_uniforms();
+	virtual ~CanvasMaterialData();
+};
+
+MaterialData *_create_canvas_material_func(ShaderData *p_shader);
+
+/* Sky Materials */
+
+struct SkyShaderData : public ShaderData {
+	// All these members are (re)initialized in `set_code`.
+	// Make sure to add the init to `set_code` whenever adding new members.
+
+	bool valid;
+	RID version;
+
+	Vector<ShaderCompiler::GeneratedCode::Texture> texture_uniforms;
+
+	Vector<uint32_t> ubo_offsets;
+	uint32_t ubo_size;
+
+	String code;
+
+	bool uses_time;
+	bool uses_position;
+	bool uses_half_res;
+	bool uses_quarter_res;
+	bool uses_light;
+
+	virtual void set_code(const String &p_Code);
+	virtual bool is_animated() const;
+	virtual bool casts_shadows() const;
+	virtual RS::ShaderNativeSourceCode get_native_source_code() const;
+	SkyShaderData();
+	virtual ~SkyShaderData();
+};
+
+ShaderData *_create_sky_shader_func();
+
+struct SkyMaterialData : public MaterialData {
+	SkyShaderData *shader_data = nullptr;
+	bool uniform_set_updated = false;
+
+	virtual void set_render_priority(int p_priority) {}
+	virtual void set_next_pass(RID p_pass) {}
+	virtual void update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
+	virtual void bind_uniforms();
+	virtual ~SkyMaterialData();
+};
+
+MaterialData *_create_sky_material_func(ShaderData *p_shader);
+
+/* Scene Materials */
+
+struct SceneShaderData : public ShaderData {
+	enum BlendMode { // Used internally.
+		BLEND_MODE_MIX,
+		BLEND_MODE_ADD,
+		BLEND_MODE_SUB,
+		BLEND_MODE_MUL,
+		BLEND_MODE_PREMULT_ALPHA,
+		BLEND_MODE_ALPHA_TO_COVERAGE
+	};
+
+	enum DepthDraw {
+		DEPTH_DRAW_DISABLED,
+		DEPTH_DRAW_OPAQUE,
+		DEPTH_DRAW_ALWAYS
+	};
+
+	enum DepthTest {
+		DEPTH_TEST_DISABLED,
+		DEPTH_TEST_ENABLED,
+		DEPTH_TEST_ENABLED_INVERTED,
+	};
+
+	enum StencilCompare {
+		STENCIL_COMPARE_LESS,
+		STENCIL_COMPARE_EQUAL,
+		STENCIL_COMPARE_LESS_OR_EQUAL,
+		STENCIL_COMPARE_GREATER,
+		STENCIL_COMPARE_NOT_EQUAL,
+		STENCIL_COMPARE_GREATER_OR_EQUAL,
+		STENCIL_COMPARE_ALWAYS,
+		STENCIL_COMPARE_MAX // not an actual operator, just the amount of operators
+	};
+
+	enum StencilFlags {
+		STENCIL_FLAG_READ = 1,
+		STENCIL_FLAG_WRITE = 2,
+		STENCIL_FLAG_WRITE_DEPTH_FAIL = 4,
+	};
+
+	enum AlphaAntiAliasing {
+		ALPHA_ANTIALIASING_OFF,
+		ALPHA_ANTIALIASING_ALPHA_TO_COVERAGE,
+		ALPHA_ANTIALIASING_ALPHA_TO_COVERAGE_AND_TO_ONE
+	};
+
+	// All these members are (re)initialized in `set_code`.
+	// Make sure to add the init to `set_code` whenever adding new members.
+
+	bool valid;
+	RID version;
+
+	Vector<ShaderCompiler::GeneratedCode::Texture> texture_uniforms;
+
+	Vector<uint32_t> ubo_offsets;
+	uint32_t ubo_size;
+
+	String code;
+
+	BlendMode blend_mode;
+	AlphaAntiAliasing alpha_antialiasing_mode;
+	DepthDraw depth_draw;
+	DepthTest depth_test;
+	RS::CullMode cull_mode;
+
+	StencilCompare stencil_compare;
+	uint32_t stencil_flags;
+	int32_t stencil_reference;
+	bool stencil_enabled;
+
+	bool uses_point_size;
+	bool uses_alpha;
+	bool uses_alpha_clip;
+	bool uses_blend_alpha;
+	bool uses_depth_prepass_alpha;
+	bool uses_discard;
+	bool uses_roughness;
+	bool uses_normal;
+	bool uses_particle_trails;
+	bool wireframe;
+
+	bool unshaded;
+	bool uses_vertex;
+	bool uses_position;
+	bool uses_sss;
+	bool uses_transmittance;
+	bool uses_screen_texture;
+	bool uses_screen_texture_mipmaps;
+	bool uses_depth_texture;
+	bool uses_normal_texture;
+	bool uses_bent_normal_texture;
+	bool uses_time;
+	bool uses_vertex_time;
+	bool uses_fragment_time;
+	bool writes_modelview_or_projection;
+	bool uses_world_coordinates;
+	bool uses_tangent;
+	bool uses_color;
+	bool uses_uv;
+	bool uses_uv2;
+	bool uses_custom0;
+	bool uses_custom1;
+	bool uses_custom2;
+	bool uses_custom3;
+	bool uses_bones;
+	bool uses_weights;
+
+	uint64_t vertex_input_mask;
+
+	virtual void set_code(const String &p_Code);
+	virtual bool is_animated() const;
+	virtual bool casts_shadows() const;
+	virtual RS::ShaderNativeSourceCode get_native_source_code() const;
+
+	SceneShaderData();
+	virtual ~SceneShaderData();
+};
+
+ShaderData *_create_scene_shader_func();
+
+struct SceneMaterialData : public MaterialData {
+	SceneShaderData *shader_data = nullptr;
+	uint64_t last_pass = 0;
+	uint32_t index = 0;
+	RID next_pass;
+	uint8_t priority = 0;
+	virtual void set_render_priority(int p_priority);
+	virtual void set_next_pass(RID p_pass);
+	virtual void update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
+	virtual void bind_uniforms();
+	virtual ~SceneMaterialData();
+};
+
+MaterialData *_create_scene_material_func(ShaderData *p_shader);
+
+/* Particle Shader */
+
+enum {
+	PARTICLES_MAX_USERDATAS = 6
+};
+
+struct ParticlesShaderData : public ShaderData {
+	// All these members are (re)initialized in `set_code`.
+	// Make sure to add the init to `set_code` whenever adding new members.
+
+	bool valid;
+	RID version;
+
+	Vector<ShaderCompiler::GeneratedCode::Texture> texture_uniforms;
+
+	Vector<uint32_t> ubo_offsets;
+	uint32_t ubo_size;
+
+	String code;
+
+	bool uses_collision;
+	bool uses_time;
+
+	bool userdatas_used[PARTICLES_MAX_USERDATAS] = {};
+	uint32_t userdata_count;
+
+	virtual void set_code(const String &p_Code);
+	virtual bool is_animated() const;
+	virtual bool casts_shadows() const;
+	virtual RS::ShaderNativeSourceCode get_native_source_code() const;
+
+	ParticlesShaderData() {}
+	virtual ~ParticlesShaderData();
+};
+
+ShaderData *_create_particles_shader_func();
+
+struct ParticleProcessMaterialData : public MaterialData {
+	ParticlesShaderData *shader_data = nullptr;
+	RID uniform_set;
+
+	virtual void set_render_priority(int p_priority) {}
+	virtual void set_next_pass(RID p_pass) {}
+	virtual void update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
+	virtual void bind_uniforms();
+	virtual ~ParticleProcessMaterialData();
+};
+
+MaterialData *_create_particles_material_func(ShaderData *p_shader);
+
+/* Global shader uniform structs */
+struct GlobalShaderUniforms {
+	enum {
+		BUFFER_DIRTY_REGION_SIZE = 1024
+	};
+	struct Variable {
+		HashSet<RID> texture_materials; // materials using this
+
+		RS::GlobalShaderParameterType type;
+		Variant value;
+		Variant override;
+		int32_t buffer_index; //for vectors
+		int32_t buffer_elements; //for vectors
+	};
+
+	HashMap<StringName, Variable> variables;
+
+	struct Value {
+		float x;
+		float y;
+		float z;
+		float w;
+	};
+
+	struct ValueInt {
+		int32_t x;
+		int32_t y;
+		int32_t z;
+		int32_t w;
+	};
+
+	struct ValueUInt {
+		uint32_t x;
+		uint32_t y;
+		uint32_t z;
+		uint32_t w;
+	};
+
+	struct ValueUsage {
+		uint32_t elements = 0;
+	};
+
+	List<RID> materials_using_buffer;
+	List<RID> materials_using_texture;
+
+	GLuint buffer = GLuint(0);
+	Value *buffer_values = nullptr;
+	ValueUsage *buffer_usage = nullptr;
+	bool *buffer_dirty_regions = nullptr;
+	uint32_t buffer_dirty_region_count = 0;
+
+	uint32_t buffer_size;
+
+	bool must_update_texture_materials = false;
+	bool must_update_buffer_materials = false;
+
+	HashMap<RID, int32_t> instance_buffer_pos;
+};
+
+class MaterialStorage : public RendererMaterialStorage {
+private:
+	friend struct MaterialData;
+	static MaterialStorage *singleton;
+
+	/* GLOBAL SHADER UNIFORM API */
+
+	GlobalShaderUniforms global_shader_uniforms;
+
+	int32_t _global_shader_uniform_allocate(uint32_t p_elements);
+	void _global_shader_uniform_store_in_buffer(int32_t p_index, RS::GlobalShaderParameterType p_type, const Variant &p_value);
+	void _global_shader_uniform_mark_buffer_dirty(int32_t p_index, int32_t p_elements);
+
+	/* SHADER API */
+
+	ShaderDataRequestFunction shader_data_request_func[RS::SHADER_MAX];
+	mutable RID_Owner<Shader, true> shader_owner;
+
+	/* MATERIAL API */
+	MaterialDataRequestFunction material_data_request_func[RS::SHADER_MAX];
+	mutable RID_Owner<Material, true> material_owner;
+
+	SelfList<Material>::List material_update_list;
+	HashSet<RID> dummy_embedded_set;
+
+public:
+	static MaterialStorage *get_singleton();
+
+	MaterialStorage();
+	virtual ~MaterialStorage();
+
+	static _FORCE_INLINE_ void store_transform(const Transform3D &p_mtx, float *p_array) {
+		p_array[0] = p_mtx.basis.rows[0][0];
+		p_array[1] = p_mtx.basis.rows[1][0];
+		p_array[2] = p_mtx.basis.rows[2][0];
+		p_array[3] = 0;
+		p_array[4] = p_mtx.basis.rows[0][1];
+		p_array[5] = p_mtx.basis.rows[1][1];
+		p_array[6] = p_mtx.basis.rows[2][1];
+		p_array[7] = 0;
+		p_array[8] = p_mtx.basis.rows[0][2];
+		p_array[9] = p_mtx.basis.rows[1][2];
+		p_array[10] = p_mtx.basis.rows[2][2];
+		p_array[11] = 0;
+		p_array[12] = p_mtx.origin.x;
+		p_array[13] = p_mtx.origin.y;
+		p_array[14] = p_mtx.origin.z;
+		p_array[15] = 1;
+	}
+
+	static _FORCE_INLINE_ void store_transform_3x3(const Basis &p_mtx, float *p_array) {
+		p_array[0] = p_mtx.rows[0][0];
+		p_array[1] = p_mtx.rows[1][0];
+		p_array[2] = p_mtx.rows[2][0];
+		p_array[3] = 0;
+		p_array[4] = p_mtx.rows[0][1];
+		p_array[5] = p_mtx.rows[1][1];
+		p_array[6] = p_mtx.rows[2][1];
+		p_array[7] = 0;
+		p_array[8] = p_mtx.rows[0][2];
+		p_array[9] = p_mtx.rows[1][2];
+		p_array[10] = p_mtx.rows[2][2];
+		p_array[11] = 0;
+	}
+
+	static _FORCE_INLINE_ void store_camera(const Projection &p_mtx, float *p_array) {
+		for (int i = 0; i < 4; i++) {
+			for (int j = 0; j < 4; j++) {
+				p_array[i * 4 + j] = p_mtx.columns[i][j];
+			}
+		}
+	}
+
+	struct Shaders {
+		CanvasShaderGLES3 canvas_shader;
+		SkyShaderGLES3 sky_shader;
+		SceneShaderGLES3 scene_shader;
+		ParticlesShaderGLES3 particles_process_shader;
+
+		ShaderCompiler compiler_canvas;
+		ShaderCompiler compiler_scene;
+		ShaderCompiler compiler_particles;
+		ShaderCompiler compiler_sky;
+	} shaders;
+
+	/* GLOBAL SHADER UNIFORM API */
+
+	void _update_global_shader_uniforms();
+
+	virtual void global_shader_parameter_add(const StringName &p_name, RS::GlobalShaderParameterType p_type, const Variant &p_value) override;
+	virtual void global_shader_parameter_remove(const StringName &p_name) override;
+	virtual Vector<StringName> global_shader_parameter_get_list() const override;
+
+	virtual void global_shader_parameter_set(const StringName &p_name, const Variant &p_value) override;
+	virtual void global_shader_parameter_set_override(const StringName &p_name, const Variant &p_value) override;
+	virtual Variant global_shader_parameter_get(const StringName &p_name) const override;
+	virtual RS::GlobalShaderParameterType global_shader_parameter_get_type(const StringName &p_name) const override;
+	RS::GlobalShaderParameterType global_shader_parameter_get_type_internal(const StringName &p_name) const;
+
+	virtual void global_shader_parameters_load_settings(bool p_load_textures = true) override;
+	virtual void global_shader_parameters_clear() override;
+
+	virtual int32_t global_shader_parameters_instance_allocate(RID p_instance) override;
+	virtual void global_shader_parameters_instance_free(RID p_instance) override;
+	virtual void global_shader_parameters_instance_update(RID p_instance, int p_index, const Variant &p_value, int p_flags_count = 0) override;
+
+	GLuint global_shader_parameters_get_uniform_buffer() const;
+
+	/* SHADER API */
+
+	Shader *get_shader(RID p_rid) { return shader_owner.get_or_null(p_rid); }
+	bool owns_shader(RID p_rid) { return shader_owner.owns(p_rid); }
+
+	void _shader_make_dirty(Shader *p_shader);
+
+	virtual RID shader_allocate() override;
+	virtual void shader_initialize(RID p_rid, bool p_embedded = true) override;
+	virtual void shader_free(RID p_rid) override;
+
+	virtual void shader_set_code(RID p_shader, const String &p_code) override;
+	virtual void shader_set_path_hint(RID p_shader, const String &p_path) override;
+	virtual String shader_get_code(RID p_shader) const override;
+	virtual void get_shader_parameter_list(RID p_shader, List<PropertyInfo> *p_param_list) const override;
+
+	virtual void shader_set_default_texture_parameter(RID p_shader, const StringName &p_name, RID p_texture, int p_index) override;
+	virtual RID shader_get_default_texture_parameter(RID p_shader, const StringName &p_name, int p_index) const override;
+	virtual Variant shader_get_parameter_default(RID p_shader, const StringName &p_name) const override;
+
+	virtual RS::ShaderNativeSourceCode shader_get_native_source_code(RID p_shader) const override;
+	virtual void shader_embedded_set_lock() override {}
+	virtual const HashSet<RID> &shader_embedded_set_get() const override { return dummy_embedded_set; }
+	virtual void shader_embedded_set_unlock() override {}
+
+	/* MATERIAL API */
+
+	Material *get_material(RID p_rid) { return material_owner.get_or_null(p_rid); }
+	bool owns_material(RID p_rid) { return material_owner.owns(p_rid); }
+
+	void _material_queue_update(Material *material, bool p_uniform, bool p_texture);
+	void _update_queued_materials();
+
+	virtual RID material_allocate() override;
+	virtual void material_initialize(RID p_rid) override;
+	virtual void material_free(RID p_rid) override;
+
+	virtual void material_set_shader(RID p_material, RID p_shader) override;
+
+	virtual void material_set_param(RID p_material, const StringName &p_param, const Variant &p_value) override;
+	virtual Variant material_get_param(RID p_material, const StringName &p_param) const override;
+
+	virtual void material_set_next_pass(RID p_material, RID p_next_material) override;
+	virtual void material_set_render_priority(RID p_material, int priority) override;
+
+	virtual bool material_is_animated(RID p_material) override;
+	virtual bool material_casts_shadows(RID p_material) override;
+	virtual RS::CullMode material_get_cull_mode(RID p_material) const override;
+
+	virtual void material_get_instance_shader_parameters(RID p_material, List<InstanceShaderParam> *r_parameters) override;
+
+	virtual void material_update_dependency(RID p_material, DependencyTracker *p_instance) override;
+
+	_FORCE_INLINE_ uint32_t material_get_shader_id(RID p_material) {
+		Material *material = material_owner.get_or_null(p_material);
+		return material->shader_id;
+	}
+
+	_FORCE_INLINE_ MaterialData *material_get_data(RID p_material, RS::ShaderMode p_shader_mode) {
+		Material *material = material_owner.get_or_null(p_material);
+		if (!material || material->shader_mode != p_shader_mode) {
+			return nullptr;
+		} else {
+			return material->data;
+		}
+	}
+};
+
+} // namespace GLES3
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/mesh_storage.h

@@ -0,0 +1,615 @@
+/**************************************************************************/
+/*  mesh_storage.h                                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "core/templates/local_vector.h"
+#include "core/templates/rid_owner.h"
+#include "core/templates/self_list.h"
+#include "drivers/gles3/shaders/skeleton.glsl.gen.h"
+#include "servers/rendering/storage/mesh_storage.h"
+#include "servers/rendering/storage/utilities.h"
+
+#include "platform_gl.h"
+
+namespace GLES3 {
+
+struct MeshInstance;
+
+struct Mesh {
+	struct Surface {
+		struct Attrib {
+			bool enabled;
+			bool integer;
+			GLint size;
+			GLenum type;
+			GLboolean normalized;
+			GLsizei stride;
+			uint32_t offset;
+		};
+		RS::PrimitiveType primitive = RS::PRIMITIVE_POINTS;
+		uint64_t format = 0;
+
+		GLuint vertex_buffer = 0;
+		GLuint attribute_buffer = 0;
+		GLuint skin_buffer = 0;
+		uint32_t vertex_count = 0;
+		uint32_t vertex_buffer_size = 0;
+		uint32_t attribute_buffer_size = 0;
+		uint32_t skin_buffer_size = 0;
+
+		// Cache vertex arrays so they can be created
+		struct Version {
+			uint32_t input_mask = 0;
+			GLuint vertex_array = 0;
+
+			Attrib attribs[RS::ARRAY_MAX];
+		};
+
+		SpinLock version_lock; //needed to access versions
+		Version *versions = nullptr; //allocated on demand
+		uint32_t version_count = 0;
+
+		GLuint index_buffer = 0;
+		uint32_t index_count = 0;
+		uint32_t index_buffer_size = 0;
+
+		struct Wireframe {
+			GLuint index_buffer = 0;
+			uint32_t index_count = 0;
+			uint32_t index_buffer_size = 0;
+		};
+
+		Wireframe *wireframe = nullptr;
+
+		struct LOD {
+			float edge_length = 0.0;
+			uint32_t index_count = 0;
+			uint32_t index_buffer_size = 0;
+			GLuint index_buffer = 0;
+		};
+
+		LOD *lods = nullptr;
+		uint32_t lod_count = 0;
+
+		AABB aabb;
+
+		Vector<AABB> bone_aabbs;
+
+		// Transform used in runtime bone AABBs compute.
+		// As bone AABBs are saved in Mesh space, but bones animation is in Skeleton space.
+		Transform3D mesh_to_skeleton_xform;
+
+		Vector4 uv_scale;
+
+		struct BlendShape {
+			GLuint vertex_buffer = 0;
+			GLuint vertex_array = 0;
+		};
+
+		BlendShape *blend_shapes = nullptr;
+		GLuint skeleton_vertex_array = 0;
+
+		RID material;
+	};
+
+	uint32_t blend_shape_count = 0;
+	RS::BlendShapeMode blend_shape_mode = RS::BLEND_SHAPE_MODE_NORMALIZED;
+
+	Surface **surfaces = nullptr;
+	uint32_t surface_count = 0;
+
+	bool has_bone_weights = false;
+
+	AABB aabb;
+	AABB custom_aabb;
+	uint64_t skeleton_aabb_version = 0;
+
+	Vector<RID> material_cache;
+
+	List<MeshInstance *> instances;
+
+	RID shadow_mesh;
+	HashSet<Mesh *> shadow_owners;
+
+	String path;
+
+	Dependency dependency;
+};
+
+/* Mesh Instance */
+
+struct MeshInstance {
+	Mesh *mesh = nullptr;
+	RID skeleton;
+	struct Surface {
+		GLuint vertex_buffers[2] = { 0, 0 };
+		GLuint vertex_arrays[2] = { 0, 0 };
+		GLuint vertex_buffer = 0;
+		int vertex_stride_cache = 0;
+		int vertex_size_cache = 0;
+		int vertex_normal_offset_cache = 0;
+		int vertex_tangent_offset_cache = 0;
+		uint64_t format_cache = 0;
+
+		Mesh::Surface::Version *versions = nullptr; //allocated on demand
+		uint32_t version_count = 0;
+	};
+	LocalVector<Surface> surfaces;
+	LocalVector<float> blend_weights;
+
+	List<MeshInstance *>::Element *I = nullptr; //used to erase itself
+	uint64_t skeleton_version = 0;
+	bool dirty = false;
+	bool weights_dirty = false;
+	SelfList<MeshInstance> weight_update_list;
+	SelfList<MeshInstance> array_update_list;
+	Transform2D canvas_item_transform_2d;
+	MeshInstance() :
+			weight_update_list(this), array_update_list(this) {}
+};
+
+/* MultiMesh */
+
+struct MultiMesh {
+	RID mesh;
+	int instances = 0;
+	RS::MultimeshTransformFormat xform_format = RS::MULTIMESH_TRANSFORM_3D;
+	bool uses_colors = false;
+	bool uses_custom_data = false;
+	int visible_instances = -1;
+	AABB aabb;
+	AABB custom_aabb;
+	bool aabb_dirty = false;
+	bool buffer_set = false;
+	uint32_t stride_cache = 0;
+	uint32_t color_offset_cache = 0;
+	uint32_t custom_data_offset_cache = 0;
+
+	Vector<float> data_cache; //used if individual setting is used
+	bool *data_cache_dirty_regions = nullptr;
+	uint32_t data_cache_used_dirty_regions = 0;
+
+	GLuint buffer = 0;
+
+	bool dirty = false;
+	MultiMesh *dirty_list = nullptr;
+
+	RendererMeshStorage::MultiMeshInterpolator interpolator;
+
+	Dependency dependency;
+};
+
+struct Skeleton {
+	bool use_2d = false;
+	int size = 0;
+	int height = 0;
+	LocalVector<float> data;
+
+	bool dirty = false;
+	Skeleton *dirty_list = nullptr;
+	Transform2D base_transform_2d;
+
+	GLuint transforms_texture = 0;
+
+	uint64_t version = 1;
+
+	Dependency dependency;
+};
+
+class MeshStorage : public RendererMeshStorage {
+private:
+	static MeshStorage *singleton;
+
+	struct {
+		SkeletonShaderGLES3 shader;
+		RID shader_version;
+	} skeleton_shader;
+
+	/* Mesh */
+
+	mutable RID_Owner<Mesh, true> mesh_owner;
+
+	void _mesh_surface_generate_version_for_input_mask(Mesh::Surface::Version &v, Mesh::Surface *s, uint64_t p_input_mask, MeshInstance::Surface *mis = nullptr);
+	void _mesh_surface_clear(Mesh *mesh, int p_surface);
+
+	/* Mesh Instance API */
+
+	mutable RID_Owner<MeshInstance> mesh_instance_owner;
+
+	void _mesh_instance_clear(MeshInstance *mi);
+	void _mesh_instance_add_surface(MeshInstance *mi, Mesh *mesh, uint32_t p_surface);
+	void _mesh_instance_remove_surface(MeshInstance *mi, int p_surface);
+	void _blend_shape_bind_mesh_instance_buffer(MeshInstance *p_mi, uint32_t p_surface);
+	SelfList<MeshInstance>::List dirty_mesh_instance_weights;
+	SelfList<MeshInstance>::List dirty_mesh_instance_arrays;
+
+	/* MultiMesh */
+
+	mutable RID_Owner<MultiMesh, true> multimesh_owner;
+
+	MultiMesh *multimesh_dirty_list = nullptr;
+
+	_FORCE_INLINE_ void _multimesh_make_local(MultiMesh *multimesh) const;
+	_FORCE_INLINE_ void _multimesh_mark_dirty(MultiMesh *multimesh, int p_index, bool p_aabb);
+	_FORCE_INLINE_ void _multimesh_mark_all_dirty(MultiMesh *multimesh, bool p_data, bool p_aabb);
+	_FORCE_INLINE_ void _multimesh_re_create_aabb(MultiMesh *multimesh, const float *p_data, int p_instances);
+
+	/* Skeleton */
+
+	mutable RID_Owner<Skeleton, true> skeleton_owner;
+
+	_FORCE_INLINE_ void _skeleton_make_dirty(Skeleton *skeleton);
+	void _compute_skeleton(MeshInstance *p_mi, Skeleton *p_sk, uint32_t p_surface);
+
+	Skeleton *skeleton_dirty_list = nullptr;
+
+public:
+	static MeshStorage *get_singleton();
+
+	MeshStorage();
+	virtual ~MeshStorage();
+
+	/* MESH API */
+
+	Mesh *get_mesh(RID p_rid) { return mesh_owner.get_or_null(p_rid); }
+	bool owns_mesh(RID p_rid) { return mesh_owner.owns(p_rid); }
+
+	virtual RID mesh_allocate() override;
+	virtual void mesh_initialize(RID p_rid) override;
+	virtual void mesh_free(RID p_rid) override;
+
+	virtual void mesh_set_blend_shape_count(RID p_mesh, int p_blend_shape_count) override;
+	virtual bool mesh_needs_instance(RID p_mesh, bool p_has_skeleton) override;
+
+	virtual void mesh_add_surface(RID p_mesh, const RS::SurfaceData &p_surface) override;
+
+	virtual int mesh_get_blend_shape_count(RID p_mesh) const override;
+
+	virtual void mesh_set_blend_shape_mode(RID p_mesh, RS::BlendShapeMode p_mode) override;
+	virtual RS::BlendShapeMode mesh_get_blend_shape_mode(RID p_mesh) const override;
+
+	virtual void mesh_surface_update_vertex_region(RID p_mesh, int p_surface, int p_offset, const Vector<uint8_t> &p_data) override;
+	virtual void mesh_surface_update_attribute_region(RID p_mesh, int p_surface, int p_offset, const Vector<uint8_t> &p_data) override;
+	virtual void mesh_surface_update_skin_region(RID p_mesh, int p_surface, int p_offset, const Vector<uint8_t> &p_data) override;
+	virtual void mesh_surface_update_index_region(RID p_mesh, int p_surface, int p_offset, const Vector<uint8_t> &p_data) override;
+
+	virtual void mesh_surface_set_material(RID p_mesh, int p_surface, RID p_material) override;
+	virtual RID mesh_surface_get_material(RID p_mesh, int p_surface) const override;
+
+	virtual RS::SurfaceData mesh_get_surface(RID p_mesh, int p_surface) const override;
+	virtual int mesh_get_surface_count(RID p_mesh) const override;
+
+	virtual void mesh_set_custom_aabb(RID p_mesh, const AABB &p_aabb) override;
+	virtual AABB mesh_get_custom_aabb(RID p_mesh) const override;
+	virtual AABB mesh_get_aabb(RID p_mesh, RID p_skeleton = RID()) override;
+
+	virtual void mesh_set_path(RID p_mesh, const String &p_path) override;
+	virtual String mesh_get_path(RID p_mesh) const override;
+
+	virtual void mesh_set_shadow_mesh(RID p_mesh, RID p_shadow_mesh) override;
+
+	virtual void mesh_clear(RID p_mesh) override;
+	virtual void mesh_surface_remove(RID p_mesh, int p_surface) override;
+	virtual void mesh_debug_usage(List<RS::MeshInfo> *r_info) override {}
+
+	_FORCE_INLINE_ const RID *mesh_get_surface_count_and_materials(RID p_mesh, uint32_t &r_surface_count) {
+		Mesh *mesh = mesh_owner.get_or_null(p_mesh);
+		ERR_FAIL_NULL_V(mesh, nullptr);
+		r_surface_count = mesh->surface_count;
+		if (r_surface_count == 0) {
+			return nullptr;
+		}
+		if (mesh->material_cache.is_empty()) {
+			mesh->material_cache.resize(mesh->surface_count);
+			for (uint32_t i = 0; i < r_surface_count; i++) {
+				mesh->material_cache.write[i] = mesh->surfaces[i]->material;
+			}
+		}
+
+		return mesh->material_cache.ptr();
+	}
+
+	_FORCE_INLINE_ void *mesh_get_surface(RID p_mesh, uint32_t p_surface_index) {
+		Mesh *mesh = mesh_owner.get_or_null(p_mesh);
+		ERR_FAIL_NULL_V(mesh, nullptr);
+		ERR_FAIL_UNSIGNED_INDEX_V(p_surface_index, mesh->surface_count, nullptr);
+
+		return mesh->surfaces[p_surface_index];
+	}
+
+	_FORCE_INLINE_ RID mesh_get_shadow_mesh(RID p_mesh) {
+		Mesh *mesh = mesh_owner.get_or_null(p_mesh);
+		ERR_FAIL_NULL_V(mesh, RID());
+
+		return mesh->shadow_mesh;
+	}
+
+	_FORCE_INLINE_ RS::PrimitiveType mesh_surface_get_primitive(void *p_surface) {
+		Mesh::Surface *surface = reinterpret_cast<Mesh::Surface *>(p_surface);
+		return surface->primitive;
+	}
+
+	_FORCE_INLINE_ bool mesh_surface_has_lod(void *p_surface) const {
+		Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
+		return s->lod_count > 0;
+	}
+
+	_FORCE_INLINE_ uint32_t mesh_surface_get_vertices_drawn_count(void *p_surface) const {
+		Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
+		return s->index_count ? s->index_count : s->vertex_count;
+	}
+
+	_FORCE_INLINE_ uint32_t mesh_surface_get_lod(void *p_surface, float p_model_scale, float p_distance_threshold, float p_mesh_lod_threshold, uint32_t &r_index_count) const {
+		Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
+		ERR_FAIL_NULL_V(s, 0);
+
+		int32_t current_lod = -1;
+		r_index_count = s->index_count;
+
+		for (uint32_t i = 0; i < s->lod_count; i++) {
+			float screen_size = s->lods[i].edge_length * p_model_scale / p_distance_threshold;
+			if (screen_size > p_mesh_lod_threshold) {
+				break;
+			}
+			current_lod = i;
+		}
+		if (current_lod == -1) {
+			return 0;
+		} else {
+			r_index_count = s->lods[current_lod].index_count;
+			return current_lod + 1;
+		}
+	}
+
+	_FORCE_INLINE_ GLuint mesh_surface_get_index_buffer(void *p_surface, uint32_t p_lod) const {
+		Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
+
+		if (p_lod == 0) {
+			return s->index_buffer;
+		} else {
+			return s->lods[p_lod - 1].index_buffer;
+		}
+	}
+
+	_FORCE_INLINE_ GLuint mesh_surface_get_index_buffer_wireframe(void *p_surface) const {
+		Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
+
+		if (s->wireframe) {
+			return s->wireframe->index_buffer;
+		}
+
+		return 0;
+	}
+
+	_FORCE_INLINE_ GLenum mesh_surface_get_index_type(void *p_surface) const {
+		Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
+
+		return (s->vertex_count <= 65536 && s->vertex_count > 0) ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
+	}
+
+	// Use this to cache Vertex Array Objects so they are only generated once
+	_FORCE_INLINE_ void mesh_surface_get_vertex_arrays_and_format(void *p_surface, uint64_t p_input_mask, GLuint &r_vertex_array_gl) {
+		Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
+
+		s->version_lock.lock();
+
+		// There will never be more than 3 or 4 versions, so iterating is the fastest way.
+
+		for (uint32_t i = 0; i < s->version_count; i++) {
+			if (s->versions[i].input_mask != p_input_mask) {
+				continue;
+			}
+			// We have this version, hooray.
+			r_vertex_array_gl = s->versions[i].vertex_array;
+			s->version_lock.unlock();
+			return;
+		}
+
+		uint32_t version = s->version_count;
+		s->version_count++;
+		s->versions = (Mesh::Surface::Version *)memrealloc(s->versions, sizeof(Mesh::Surface::Version) * s->version_count);
+
+		_mesh_surface_generate_version_for_input_mask(s->versions[version], s, p_input_mask);
+
+		r_vertex_array_gl = s->versions[version].vertex_array;
+
+		s->version_lock.unlock();
+	}
+
+	/* MESH INSTANCE API */
+
+	MeshInstance *get_mesh_instance(RID p_rid) { return mesh_instance_owner.get_or_null(p_rid); }
+	bool owns_mesh_instance(RID p_rid) { return mesh_instance_owner.owns(p_rid); }
+
+	virtual RID mesh_instance_create(RID p_base) override;
+	virtual void mesh_instance_free(RID p_rid) override;
+	virtual void mesh_instance_set_skeleton(RID p_mesh_instance, RID p_skeleton) override;
+	virtual void mesh_instance_set_blend_shape_weight(RID p_mesh_instance, int p_shape, float p_weight) override;
+	virtual void mesh_instance_check_for_update(RID p_mesh_instance) override;
+	virtual void mesh_instance_set_canvas_item_transform(RID p_mesh_instance, const Transform2D &p_transform) override;
+	virtual void update_mesh_instances() override;
+
+	// TODO: considering hashing versions with multimesh buffer RID.
+	// Doing so would allow us to avoid specifying multimesh buffer pointers every frame and may improve performance.
+	_FORCE_INLINE_ void mesh_instance_surface_get_vertex_arrays_and_format(RID p_mesh_instance, uint32_t p_surface_index, uint64_t p_input_mask, GLuint &r_vertex_array_gl) {
+		MeshInstance *mi = mesh_instance_owner.get_or_null(p_mesh_instance);
+		ERR_FAIL_NULL(mi);
+		Mesh *mesh = mi->mesh;
+		ERR_FAIL_UNSIGNED_INDEX(p_surface_index, mesh->surface_count);
+
+		MeshInstance::Surface *mis = &mi->surfaces[p_surface_index];
+		Mesh::Surface *s = mesh->surfaces[p_surface_index];
+
+		s->version_lock.lock();
+
+		//there will never be more than, at much, 3 or 4 versions, so iterating is the fastest way
+
+		for (uint32_t i = 0; i < mis->version_count; i++) {
+			if (mis->versions[i].input_mask != p_input_mask) {
+				continue;
+			}
+			//we have this version, hooray
+			r_vertex_array_gl = mis->versions[i].vertex_array;
+			s->version_lock.unlock();
+			return;
+		}
+
+		uint32_t version = mis->version_count;
+		mis->version_count++;
+		mis->versions = (Mesh::Surface::Version *)memrealloc(mis->versions, sizeof(Mesh::Surface::Version) * mis->version_count);
+
+		_mesh_surface_generate_version_for_input_mask(mis->versions[version], s, p_input_mask, mis);
+
+		r_vertex_array_gl = mis->versions[version].vertex_array;
+
+		s->version_lock.unlock();
+	}
+
+	/* MULTIMESH API */
+
+	MultiMesh *get_multimesh(RID p_rid) { return multimesh_owner.get_or_null(p_rid); }
+	bool owns_multimesh(RID p_rid) { return multimesh_owner.owns(p_rid); }
+
+	virtual RID _multimesh_allocate() override;
+	virtual void _multimesh_initialize(RID p_rid) override;
+	virtual void _multimesh_free(RID p_rid) override;
+	virtual void _multimesh_allocate_data(RID p_multimesh, int p_instances, RS::MultimeshTransformFormat p_transform_format, bool p_use_colors = false, bool p_use_custom_data = false, bool p_use_indirect = false) override;
+	virtual int _multimesh_get_instance_count(RID p_multimesh) const override;
+
+	virtual void _multimesh_set_mesh(RID p_multimesh, RID p_mesh) override;
+	virtual void _multimesh_instance_set_transform(RID p_multimesh, int p_index, const Transform3D &p_transform) override;
+	virtual void _multimesh_instance_set_transform_2d(RID p_multimesh, int p_index, const Transform2D &p_transform) override;
+	virtual void _multimesh_instance_set_color(RID p_multimesh, int p_index, const Color &p_color) override;
+	virtual void _multimesh_instance_set_custom_data(RID p_multimesh, int p_index, const Color &p_color) override;
+
+	virtual RID _multimesh_get_mesh(RID p_multimesh) const override;
+	virtual void _multimesh_set_custom_aabb(RID p_multimesh, const AABB &p_aabb) override;
+	virtual AABB _multimesh_get_custom_aabb(RID p_multimesh) const override;
+	virtual AABB _multimesh_get_aabb(RID p_multimesh) override;
+
+	virtual Transform3D _multimesh_instance_get_transform(RID p_multimesh, int p_index) const override;
+	virtual Transform2D _multimesh_instance_get_transform_2d(RID p_multimesh, int p_index) const override;
+	virtual Color _multimesh_instance_get_color(RID p_multimesh, int p_index) const override;
+	virtual Color _multimesh_instance_get_custom_data(RID p_multimesh, int p_index) const override;
+	virtual void _multimesh_set_buffer(RID p_multimesh, const Vector<float> &p_buffer) override;
+	virtual RID _multimesh_get_command_buffer_rd_rid(RID p_multimesh) const override;
+	virtual RID _multimesh_get_buffer_rd_rid(RID p_multimesh) const override;
+	virtual Vector<float> _multimesh_get_buffer(RID p_multimesh) const override;
+
+	virtual void _multimesh_set_visible_instances(RID p_multimesh, int p_visible) override;
+	virtual int _multimesh_get_visible_instances(RID p_multimesh) const override;
+
+	virtual MultiMeshInterpolator *_multimesh_get_interpolator(RID p_multimesh) const override;
+
+	void _update_dirty_multimeshes();
+
+	_FORCE_INLINE_ RS::MultimeshTransformFormat multimesh_get_transform_format(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, RS::MULTIMESH_TRANSFORM_3D);
+		return multimesh->xform_format;
+	}
+
+	_FORCE_INLINE_ bool multimesh_uses_colors(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, false);
+		return multimesh->uses_colors;
+	}
+
+	_FORCE_INLINE_ bool multimesh_uses_custom_data(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, false);
+		return multimesh->uses_custom_data;
+	}
+
+	_FORCE_INLINE_ uint32_t multimesh_get_instances_to_draw(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, 0);
+		if (multimesh->visible_instances >= 0) {
+			return multimesh->visible_instances;
+		}
+		return multimesh->instances;
+	}
+
+	_FORCE_INLINE_ GLuint multimesh_get_gl_buffer(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, 0);
+		return multimesh->buffer;
+	}
+
+	_FORCE_INLINE_ uint32_t multimesh_get_stride(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, 0);
+		return multimesh->stride_cache;
+	}
+
+	_FORCE_INLINE_ uint32_t multimesh_get_color_offset(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, 0);
+		return multimesh->color_offset_cache;
+	}
+
+	_FORCE_INLINE_ uint32_t multimesh_get_custom_data_offset(RID p_multimesh) const {
+		MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
+		ERR_FAIL_NULL_V(multimesh, 0);
+		return multimesh->custom_data_offset_cache;
+	}
+
+	/* SKELETON API */
+
+	Skeleton *get_skeleton(RID p_rid) { return skeleton_owner.get_or_null(p_rid); }
+	bool owns_skeleton(RID p_rid) { return skeleton_owner.owns(p_rid); }
+
+	virtual RID skeleton_allocate() override;
+	virtual void skeleton_initialize(RID p_rid) override;
+	virtual void skeleton_free(RID p_rid) override;
+
+	virtual void skeleton_allocate_data(RID p_skeleton, int p_bones, bool p_2d_skeleton = false) override;
+	virtual void skeleton_set_base_transform_2d(RID p_skeleton, const Transform2D &p_base_transform) override;
+	virtual int skeleton_get_bone_count(RID p_skeleton) const override;
+	virtual void skeleton_bone_set_transform(RID p_skeleton, int p_bone, const Transform3D &p_transform) override;
+	virtual Transform3D skeleton_bone_get_transform(RID p_skeleton, int p_bone) const override;
+	virtual void skeleton_bone_set_transform_2d(RID p_skeleton, int p_bone, const Transform2D &p_transform) override;
+	virtual Transform2D skeleton_bone_get_transform_2d(RID p_skeleton, int p_bone) const override;
+
+	virtual void skeleton_update_dependency(RID p_base, DependencyTracker *p_instance) override;
+
+	void _update_dirty_skeletons();
+
+	_FORCE_INLINE_ bool skeleton_is_valid(RID p_skeleton) {
+		return skeleton_owner.get_or_null(p_skeleton) != nullptr;
+	}
+};
+
+} // namespace GLES3
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/particles_storage.h

@@ -0,0 +1,462 @@
+/**************************************************************************/
+/*  particles_storage.h                                                   */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "core/templates/rid_owner.h"
+#include "core/templates/self_list.h"
+#include "drivers/gles3/shaders/particles_copy.glsl.gen.h"
+#include "servers/rendering/storage/particles_storage.h"
+#include "servers/rendering/storage/utilities.h"
+
+#include "platform_gl.h"
+
+namespace GLES3 {
+
+enum ParticlesUniformLocation {
+	PARTICLES_FRAME_UNIFORM_LOCATION,
+	PARTICLES_GLOBALS_UNIFORM_LOCATION,
+	PARTICLES_MATERIAL_UNIFORM_LOCATION,
+};
+
+class ParticlesStorage : public RendererParticlesStorage {
+private:
+	static ParticlesStorage *singleton;
+
+	/* PARTICLES */
+
+	struct ParticleInstanceData3D {
+		float xform[12];
+		float color[2]; // Color and custom are packed together into one vec4;
+		float custom[2];
+	};
+
+	struct ParticleInstanceData2D {
+		float xform[8];
+		float color[2]; // Color and custom are packed together into one vec4;
+		float custom[2];
+	};
+
+	struct ParticlesViewSort {
+		Vector3 z_dir;
+		bool operator()(const ParticleInstanceData3D &p_a, const ParticleInstanceData3D &p_b) const {
+			return z_dir.dot(Vector3(p_a.xform[3], p_a.xform[7], p_a.xform[11])) < z_dir.dot(Vector3(p_b.xform[3], p_b.xform[7], p_b.xform[11]));
+		}
+	};
+
+	struct ParticlesFrameParams {
+		enum {
+			MAX_ATTRACTORS = 32,
+			MAX_COLLIDERS = 32,
+			MAX_3D_TEXTURES = 0 // GLES3 renderer doesn't support using 3D textures for flow field or collisions.
+		};
+
+		enum AttractorType {
+			ATTRACTOR_TYPE_SPHERE,
+			ATTRACTOR_TYPE_BOX,
+			ATTRACTOR_TYPE_VECTOR_FIELD,
+		};
+
+		struct Attractor {
+			float transform[16];
+			float extents[4]; // Extents or radius. w-channel is padding.
+
+			uint32_t type;
+			float strength;
+			float attenuation;
+			float directionality;
+		};
+
+		enum CollisionType {
+			COLLISION_TYPE_SPHERE,
+			COLLISION_TYPE_BOX,
+			COLLISION_TYPE_SDF,
+			COLLISION_TYPE_HEIGHT_FIELD,
+			COLLISION_TYPE_2D_SDF,
+
+		};
+
+		struct Collider {
+			float transform[16];
+			float extents[4]; // Extents or radius. w-channel is padding.
+
+			uint32_t type;
+			float scale;
+			float pad0;
+			float pad1;
+		};
+
+		uint32_t emitting;
+		uint32_t cycle;
+		float system_phase;
+		float prev_system_phase;
+
+		float explosiveness;
+		float randomness;
+		float time;
+		float delta;
+
+		float particle_size;
+		float amount_ratio;
+		float pad1;
+		float pad2;
+
+		uint32_t random_seed;
+		uint32_t attractor_count;
+		uint32_t collider_count;
+		uint32_t frame;
+
+		float emission_transform[16];
+		float emitter_velocity[3];
+		float interp_to_end;
+
+		Attractor attractors[MAX_ATTRACTORS];
+		Collider colliders[MAX_COLLIDERS];
+	};
+
+	static_assert(sizeof(ParticlesFrameParams) % 16 == 0, "ParticlesFrameParams size must be a multiple of 16 bytes");
+	static_assert(sizeof(ParticlesFrameParams) < 16384, "ParticlesFrameParams must be 16384 bytes or smaller");
+
+	struct Particles {
+		RS::ParticlesMode mode = RS::PARTICLES_MODE_3D;
+		bool inactive = true;
+		double inactive_time = 0.0;
+		bool emitting = false;
+		bool one_shot = false;
+		float amount_ratio = 1.0;
+		int amount = 0;
+		double lifetime = 1.0;
+		double pre_process_time = 0.0;
+		real_t request_process_time = 0.0;
+		real_t explosiveness = 0.0;
+		real_t randomness = 0.0;
+		bool restart_request = false;
+		AABB custom_aabb = AABB(Vector3(-4, -4, -4), Vector3(8, 8, 8));
+		bool use_local_coords = false;
+		bool has_collision_cache = false;
+
+		bool has_sdf_collision = false;
+		Transform2D sdf_collision_transform;
+		Rect2 sdf_collision_to_screen;
+		GLuint sdf_collision_texture = 0;
+
+		RID process_material;
+		uint32_t frame_counter = 0;
+		RS::ParticlesTransformAlign transform_align = RS::PARTICLES_TRANSFORM_ALIGN_DISABLED;
+
+		RS::ParticlesDrawOrder draw_order = RS::PARTICLES_DRAW_ORDER_INDEX;
+
+		Vector<RID> draw_passes;
+
+		GLuint frame_params_ubo = 0;
+
+		// We may process particles multiple times each frame (if they have a fixed FPS higher than the game FPS).
+		// Unfortunately, this means we can't just use a round-robin system of 3 buffers.
+		// To ensure the sort buffer is accurate, we copy the last frame instance buffer just before processing.
+
+		// Transform Feedback buffer and VAO for rendering.
+		// Each frame we render to this one.
+		GLuint front_vertex_array = 0; // Binds process buffer. Used for processing.
+		GLuint front_process_buffer = 0; // Transform + color + custom data + userdata + velocity + flags. Only needed for processing.
+		GLuint front_instance_buffer = 0; // Transform + color + custom data. In packed format needed for rendering.
+
+		// VAO for transform feedback, contains last frame's data.
+		// Read from this one for particles process and then copy to last frame buffer.
+		GLuint back_vertex_array = 0; // Binds process buffer. Used for processing.
+		GLuint back_process_buffer = 0; // Transform + color + custom data + userdata + velocity + flags. Only needed for processing.
+		GLuint back_instance_buffer = 0; // Transform + color + custom data. In packed format needed for rendering.
+
+		uint32_t instance_buffer_size_cache = 0;
+		uint32_t instance_buffer_stride_cache = 0;
+		uint32_t num_attrib_arrays_cache = 0;
+		uint32_t process_buffer_stride_cache = 0;
+
+		// Only ever copied to, holds last frame's instance data, then swaps with sort_buffer.
+		GLuint last_frame_buffer = 0;
+		bool last_frame_buffer_filled = false;
+		float last_frame_phase = 0.0;
+
+		// The frame-before-last's instance buffer.
+		// Use this to copy data back for sorting or computing AABB.
+		GLuint sort_buffer = 0;
+		bool sort_buffer_filled = false;
+		float sort_buffer_phase = 0.0;
+
+		uint32_t userdata_count = 0;
+
+		bool dirty = false;
+		SelfList<Particles> update_list;
+
+		double phase = 0.0;
+		double prev_phase = 0.0;
+		uint64_t prev_ticks = 0;
+		uint32_t random_seed = 0;
+
+		uint32_t cycle_number = 0;
+
+		double speed_scale = 1.0;
+
+		int fixed_fps = 30;
+		bool interpolate = true;
+		bool fractional_delta = false;
+		double frame_remainder = 0;
+		real_t collision_base_size = 0.01;
+
+		bool clear = true;
+
+		Transform3D emission_transform;
+		Vector3 emitter_velocity;
+		float interp_to_end = 0.0;
+
+		HashSet<RID> collisions;
+
+		Dependency dependency;
+
+		double trail_length = 1.0;
+		bool trails_enabled = false;
+
+		Particles() :
+				update_list(this) {
+			random_seed = Math::rand();
+		}
+	};
+
+	void _particles_process(Particles *p_particles, double p_delta);
+	void _particles_free_data(Particles *particles);
+	void _particles_update_buffers(Particles *particles);
+	void _particles_allocate_history_buffers(Particles *particles);
+	void _particles_update_instance_buffer(Particles *particles, const Vector3 &p_axis, const Vector3 &p_up_axis);
+
+	template <typename T>
+	void _particles_reverse_lifetime_sort(Particles *particles);
+
+	struct ParticlesShader {
+		RID default_shader;
+		RID default_material;
+		RID default_shader_version;
+
+		ParticlesCopyShaderGLES3 copy_shader;
+		RID copy_shader_version;
+	} particles_shader;
+
+	SelfList<Particles>::List particle_update_list;
+
+	mutable RID_Owner<Particles, true> particles_owner;
+
+	/* Particles Collision */
+
+	struct ParticlesCollision {
+		RS::ParticlesCollisionType type = RS::PARTICLES_COLLISION_TYPE_SPHERE_ATTRACT;
+		uint32_t cull_mask = 0xFFFFFFFF;
+		float radius = 1.0;
+		Vector3 extents = Vector3(1, 1, 1);
+		float attractor_strength = 1.0;
+		float attractor_attenuation = 1.0;
+		float attractor_directionality = 0.0;
+		GLuint field_texture = 0;
+		GLuint heightfield_texture = 0;
+		GLuint heightfield_fb = 0;
+		Size2i heightfield_fb_size;
+		uint32_t heightfield_mask = (1 << 20) - 1;
+
+		RS::ParticlesCollisionHeightfieldResolution heightfield_resolution = RS::PARTICLES_COLLISION_HEIGHTFIELD_RESOLUTION_1024;
+
+		Dependency dependency;
+	};
+
+	struct ParticlesCollisionInstance {
+		RID collision;
+		Transform3D transform;
+		bool active = false;
+	};
+
+	mutable RID_Owner<ParticlesCollision, true> particles_collision_owner;
+
+	mutable RID_Owner<ParticlesCollisionInstance> particles_collision_instance_owner;
+
+public:
+	static ParticlesStorage *get_singleton();
+
+	ParticlesStorage();
+	virtual ~ParticlesStorage();
+
+	bool free(RID p_rid);
+
+	/* PARTICLES */
+
+	bool owns_particles(RID p_rid) { return particles_owner.owns(p_rid); }
+
+	virtual RID particles_allocate() override;
+	virtual void particles_initialize(RID p_rid) override;
+	virtual void particles_free(RID p_rid) override;
+
+	virtual void particles_set_mode(RID p_particles, RS::ParticlesMode p_mode) override;
+	virtual void particles_emit(RID p_particles, const Transform3D &p_transform, const Vector3 &p_velocity, const Color &p_color, const Color &p_custom, uint32_t p_emit_flags) override;
+	virtual void particles_set_emitting(RID p_particles, bool p_emitting) override;
+	virtual void particles_set_amount(RID p_particles, int p_amount) override;
+	virtual void particles_set_amount_ratio(RID p_particles, float p_amount_ratio) override;
+	virtual void particles_set_lifetime(RID p_particles, double p_lifetime) override;
+	virtual void particles_set_one_shot(RID p_particles, bool p_one_shot) override;
+	virtual void particles_set_pre_process_time(RID p_particles, double p_time) override;
+	virtual void particles_request_process_time(RID p_particles, real_t p_request_process_time) override;
+	virtual void particles_set_explosiveness_ratio(RID p_particles, real_t p_ratio) override;
+	virtual void particles_set_randomness_ratio(RID p_particles, real_t p_ratio) override;
+	virtual void particles_set_custom_aabb(RID p_particles, const AABB &p_aabb) override;
+	virtual void particles_set_speed_scale(RID p_particles, double p_scale) override;
+	virtual void particles_set_use_local_coordinates(RID p_particles, bool p_enable) override;
+	virtual void particles_set_process_material(RID p_particles, RID p_material) override;
+	virtual RID particles_get_process_material(RID p_particles) const override;
+	virtual void particles_set_fixed_fps(RID p_particles, int p_fps) override;
+	virtual void particles_set_interpolate(RID p_particles, bool p_enable) override;
+	virtual void particles_set_fractional_delta(RID p_particles, bool p_enable) override;
+	virtual void particles_set_subemitter(RID p_particles, RID p_subemitter_particles) override;
+	virtual void particles_set_view_axis(RID p_particles, const Vector3 &p_axis, const Vector3 &p_up_axis) override;
+	virtual void particles_set_collision_base_size(RID p_particles, real_t p_size) override;
+
+	virtual void particles_set_transform_align(RID p_particles, RS::ParticlesTransformAlign p_transform_align) override;
+	virtual void particles_set_seed(RID p_particles, uint32_t p_seed) override;
+
+	virtual void particles_set_trails(RID p_particles, bool p_enable, double p_length) override;
+	virtual void particles_set_trail_bind_poses(RID p_particles, const Vector<Transform3D> &p_bind_poses) override;
+
+	virtual void particles_restart(RID p_particles) override;
+
+	virtual void particles_set_draw_order(RID p_particles, RS::ParticlesDrawOrder p_order) override;
+
+	virtual void particles_set_draw_passes(RID p_particles, int p_count) override;
+	virtual void particles_set_draw_pass_mesh(RID p_particles, int p_pass, RID p_mesh) override;
+
+	virtual void particles_request_process(RID p_particles) override;
+	virtual AABB particles_get_current_aabb(RID p_particles) override;
+	virtual AABB particles_get_aabb(RID p_particles) const override;
+
+	virtual void particles_set_emission_transform(RID p_particles, const Transform3D &p_transform) override;
+	virtual void particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) override;
+	virtual void particles_set_interp_to_end(RID p_particles, float p_interp) override;
+
+	virtual bool particles_get_emitting(RID p_particles) override;
+	virtual int particles_get_draw_passes(RID p_particles) const override;
+	virtual RID particles_get_draw_pass_mesh(RID p_particles, int p_pass) const override;
+
+	virtual void particles_add_collision(RID p_particles, RID p_instance) override;
+	virtual void particles_remove_collision(RID p_particles, RID p_instance) override;
+
+	void particles_set_canvas_sdf_collision(RID p_particles, bool p_enable, const Transform2D &p_xform, const Rect2 &p_to_screen, GLuint p_texture);
+
+	virtual void update_particles() override;
+	virtual bool particles_is_inactive(RID p_particles) const override;
+
+	_FORCE_INLINE_ RS::ParticlesMode particles_get_mode(RID p_particles) {
+		Particles *particles = particles_owner.get_or_null(p_particles);
+		ERR_FAIL_NULL_V(particles, RS::PARTICLES_MODE_2D);
+		return particles->mode;
+	}
+
+	_FORCE_INLINE_ uint32_t particles_get_amount(RID p_particles) {
+		Particles *particles = particles_owner.get_or_null(p_particles);
+		ERR_FAIL_NULL_V(particles, 0);
+
+		return particles->amount;
+	}
+
+	_FORCE_INLINE_ GLuint particles_get_gl_buffer(RID p_particles) {
+		Particles *particles = particles_owner.get_or_null(p_particles);
+
+		if ((particles->draw_order == RS::PARTICLES_DRAW_ORDER_VIEW_DEPTH || particles->draw_order == RS::PARTICLES_DRAW_ORDER_REVERSE_LIFETIME) && particles->sort_buffer_filled) {
+			return particles->sort_buffer;
+		}
+		return particles->back_instance_buffer;
+	}
+
+	_FORCE_INLINE_ bool particles_has_collision(RID p_particles) {
+		Particles *particles = particles_owner.get_or_null(p_particles);
+		ERR_FAIL_NULL_V(particles, false);
+
+		return particles->has_collision_cache;
+	}
+
+	_FORCE_INLINE_ uint32_t particles_is_using_local_coords(RID p_particles) {
+		Particles *particles = particles_owner.get_or_null(p_particles);
+		ERR_FAIL_NULL_V(particles, false);
+
+		return particles->use_local_coords;
+	}
+
+	Dependency *particles_get_dependency(RID p_particles) const;
+
+	/* PARTICLES COLLISION */
+	bool owns_particles_collision(RID p_rid) { return particles_collision_owner.owns(p_rid); }
+
+	virtual RID particles_collision_allocate() override;
+	virtual void particles_collision_initialize(RID p_rid) override;
+	virtual void particles_collision_free(RID p_rid) override;
+
+	virtual void particles_collision_set_collision_type(RID p_particles_collision, RS::ParticlesCollisionType p_type) override;
+	virtual void particles_collision_set_cull_mask(RID p_particles_collision, uint32_t p_cull_mask) override;
+	virtual void particles_collision_set_sphere_radius(RID p_particles_collision, real_t p_radius) override;
+	virtual void particles_collision_set_box_extents(RID p_particles_collision, const Vector3 &p_extents) override;
+	virtual void particles_collision_set_attractor_strength(RID p_particles_collision, real_t p_strength) override;
+	virtual void particles_collision_set_attractor_directionality(RID p_particles_collision, real_t p_directionality) override;
+	virtual void particles_collision_set_attractor_attenuation(RID p_particles_collision, real_t p_curve) override;
+	virtual void particles_collision_set_field_texture(RID p_particles_collision, RID p_texture) override;
+	virtual void particles_collision_height_field_update(RID p_particles_collision) override;
+	virtual void particles_collision_set_height_field_resolution(RID p_particles_collision, RS::ParticlesCollisionHeightfieldResolution p_resolution) override;
+	virtual AABB particles_collision_get_aabb(RID p_particles_collision) const override;
+	Vector3 particles_collision_get_extents(RID p_particles_collision) const;
+	virtual bool particles_collision_is_heightfield(RID p_particles_collision) const override;
+	GLuint particles_collision_get_heightfield_framebuffer(RID p_particles_collision) const;
+	virtual uint32_t particles_collision_get_height_field_mask(RID p_particles_collision) const override;
+	virtual void particles_collision_set_height_field_mask(RID p_particles_collision, uint32_t p_heightfield_mask) override;
+	virtual uint32_t particles_collision_get_cull_mask(RID p_particles_collision) const override;
+
+	_FORCE_INLINE_ Size2i particles_collision_get_heightfield_size(RID p_particles_collision) const {
+		ParticlesCollision *particles_collision = particles_collision_owner.get_or_null(p_particles_collision);
+		ERR_FAIL_NULL_V(particles_collision, Size2i());
+		ERR_FAIL_COND_V(particles_collision->type != RS::PARTICLES_COLLISION_TYPE_HEIGHTFIELD_COLLIDE, Size2i());
+
+		return particles_collision->heightfield_fb_size;
+	}
+
+	Dependency *particles_collision_get_dependency(RID p_particles) const;
+
+	/* PARTICLES COLLISION INSTANCE*/
+	bool owns_particles_collision_instance(RID p_rid) { return particles_collision_instance_owner.owns(p_rid); }
+
+	virtual RID particles_collision_instance_create(RID p_collision) override;
+	virtual void particles_collision_instance_free(RID p_rid) override;
+	virtual void particles_collision_instance_set_transform(RID p_collision_instance, const Transform3D &p_transform) override;
+	virtual void particles_collision_instance_set_active(RID p_collision_instance, bool p_active) override;
+};
+
+} // namespace GLES3
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/render_scene_buffers_gles3.cpp

@@ -0,0 +1,675 @@
+/**************************************************************************/
+/*  render_scene_buffers_gles3.cpp                                        */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifdef GLES3_ENABLED
+
+#include "render_scene_buffers_gles3.h"
+#include "config.h"
+#include "texture_storage.h"
+#include "utilities.h"
+
+#ifdef ANDROID_ENABLED
+#define glFramebufferTextureMultiviewOVR GLES3::Config::get_singleton()->eglFramebufferTextureMultiviewOVR
+#define glTexStorage3DMultisample GLES3::Config::get_singleton()->eglTexStorage3DMultisample
+#define glFramebufferTexture2DMultisampleEXT GLES3::Config::get_singleton()->eglFramebufferTexture2DMultisampleEXT
+#define glFramebufferTextureMultisampleMultiviewOVR GLES3::Config::get_singleton()->eglFramebufferTextureMultisampleMultiviewOVR
+#endif // ANDROID_ENABLED
+
+// Will only be defined if GLES 3.2 headers are included
+#ifndef GL_TEXTURE_2D_MULTISAMPLE_ARRAY
+#define GL_TEXTURE_2D_MULTISAMPLE_ARRAY 0x9102
+#endif
+
+RenderSceneBuffersGLES3::RenderSceneBuffersGLES3() {
+	for (int i = 0; i < 4; i++) {
+		glow.levels[i].color = 0;
+		glow.levels[i].fbo = 0;
+	}
+}
+
+RenderSceneBuffersGLES3::~RenderSceneBuffersGLES3() {
+	free_render_buffer_data();
+}
+
+void RenderSceneBuffersGLES3::_rt_attach_textures(GLuint p_color, GLuint p_depth, GLsizei p_samples, uint32_t p_view_count, bool p_depth_has_stencil) {
+	if (p_view_count > 1) {
+		if (p_samples > 1) {
+#if defined(ANDROID_ENABLED) || defined(WEB_ENABLED)
+			glFramebufferTextureMultisampleMultiviewOVR(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, p_color, 0, p_samples, 0, p_view_count);
+			glFramebufferTextureMultisampleMultiviewOVR(GL_FRAMEBUFFER, p_depth_has_stencil ? GL_DEPTH_STENCIL_ATTACHMENT : GL_DEPTH_ATTACHMENT, p_depth, 0, p_samples, 0, p_view_count);
+#else
+			ERR_PRINT_ONCE("Multiview MSAA isn't supported on this platform.");
+#endif
+		} else {
+#ifndef IOS_ENABLED
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, p_color, 0, 0, p_view_count);
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, p_depth_has_stencil ? GL_DEPTH_STENCIL_ATTACHMENT : GL_DEPTH_ATTACHMENT, p_depth, 0, 0, p_view_count);
+#else
+			ERR_PRINT_ONCE("Multiview isn't supported on this platform.");
+#endif
+		}
+	} else {
+		if (p_samples > 1) {
+#ifdef ANDROID_ENABLED
+			glFramebufferTexture2DMultisampleEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, p_color, 0, p_samples);
+			glFramebufferTexture2DMultisampleEXT(GL_FRAMEBUFFER, p_depth_has_stencil ? GL_DEPTH_STENCIL_ATTACHMENT : GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, p_depth, 0, p_samples);
+#else
+			ERR_PRINT_ONCE("MSAA via EXT_multisampled_render_to_texture isn't supported on this platform.");
+#endif
+		} else {
+			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, p_color, 0);
+			glFramebufferTexture2D(GL_FRAMEBUFFER, p_depth_has_stencil ? GL_DEPTH_STENCIL_ATTACHMENT : GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, p_depth, 0);
+		}
+	}
+}
+
+GLuint RenderSceneBuffersGLES3::_rt_get_cached_fbo(GLuint p_color, GLuint p_depth, GLsizei p_samples, uint32_t p_view_count) {
+	FBDEF new_fbo;
+
+#if defined(ANDROID_ENABLED) || defined(WEB_ENABLED)
+	// There shouldn't be more then 3 entries in this...
+	for (const FBDEF &cached_fbo : msaa3d.cached_fbos) {
+		if (cached_fbo.color == p_color && cached_fbo.depth == p_depth) {
+			return cached_fbo.fbo;
+		}
+	}
+
+	new_fbo.color = p_color;
+	new_fbo.depth = p_depth;
+
+	glGenFramebuffers(1, &new_fbo.fbo);
+	glBindFramebuffer(GL_FRAMEBUFFER, new_fbo.fbo);
+
+	_rt_attach_textures(p_color, p_depth, p_samples, p_view_count, true);
+
+	GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+	if (status != GL_FRAMEBUFFER_COMPLETE) {
+		WARN_PRINT("Could not create 3D MSAA framebuffer, status: " + GLES3::TextureStorage::get_singleton()->get_framebuffer_error(status));
+
+		glDeleteFramebuffers(1, &new_fbo.fbo);
+
+		new_fbo.fbo = 0;
+	} else {
+		// cache it!
+		msaa3d.cached_fbos.push_back(new_fbo);
+	}
+
+	glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+#endif
+
+	return new_fbo.fbo;
+}
+
+void RenderSceneBuffersGLES3::configure(const RenderSceneBuffersConfiguration *p_config) {
+	GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
+	GLES3::Config *config = GLES3::Config::get_singleton();
+
+	free_render_buffer_data();
+
+	internal_size = p_config->get_internal_size();
+	target_size = p_config->get_target_size();
+	scaling_3d_mode = p_config->get_scaling_3d_mode();
+	//fsr_sharpness = p_config->get_fsr_sharpness();
+	//texture_mipmap_bias = p_config->get_texture_mipmap_bias();
+	//anisotropic_filtering_level = p_config->get_anisotropic_filtering_level();
+	render_target = p_config->get_render_target();
+	msaa3d.mode = p_config->get_msaa_3d();
+	//screen_space_aa = p_config->get_screen_space_aa();
+	//use_debanding = p_config->get_use_debanding();
+	view_count = config->multiview_supported ? p_config->get_view_count() : 1;
+
+	bool use_multiview = view_count > 1;
+
+	// Get color format data from our render target so we match those
+	if (render_target.is_valid()) {
+		color_internal_format = texture_storage->render_target_get_color_internal_format(render_target);
+		color_format = texture_storage->render_target_get_color_format(render_target);
+		color_type = texture_storage->render_target_get_color_type(render_target);
+		color_format_size = texture_storage->render_target_get_color_format_size(render_target);
+	} else {
+		// reflection probe? or error?
+		color_internal_format = GL_RGBA8;
+		color_format = GL_RGBA;
+		color_type = GL_UNSIGNED_BYTE;
+		color_format_size = 4;
+	}
+
+	// Check our scaling mode
+	if (scaling_3d_mode != RS::VIEWPORT_SCALING_3D_MODE_OFF && internal_size.x == 0 && internal_size.y == 0) {
+		// Disable, no size set.
+		scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_OFF;
+	} else if (scaling_3d_mode != RS::VIEWPORT_SCALING_3D_MODE_OFF && internal_size == target_size) {
+		// If size matches, we won't use scaling.
+		scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_OFF;
+	} else if (scaling_3d_mode != RS::VIEWPORT_SCALING_3D_MODE_OFF && scaling_3d_mode != RS::VIEWPORT_SCALING_3D_MODE_BILINEAR) {
+		// We only support bilinear scaling atm.
+		WARN_PRINT_ONCE("GLES only supports bilinear scaling.");
+		scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_BILINEAR;
+	}
+
+	// Check if we support MSAA.
+	if (msaa3d.mode != RS::VIEWPORT_MSAA_DISABLED && internal_size.x == 0 && internal_size.y == 0) {
+		// Disable, no size set.
+		msaa3d.mode = RS::VIEWPORT_MSAA_DISABLED;
+	} else if (!use_multiview && msaa3d.mode != RS::VIEWPORT_MSAA_DISABLED && !config->msaa_supported && !config->rt_msaa_supported) {
+		WARN_PRINT_ONCE("MSAA is not supported on this device.");
+		msaa3d.mode = RS::VIEWPORT_MSAA_DISABLED;
+	} else if (use_multiview && msaa3d.mode != RS::VIEWPORT_MSAA_DISABLED && !config->msaa_multiview_supported && !config->rt_msaa_multiview_supported) {
+		WARN_PRINT_ONCE("Multiview MSAA is not supported on this device.");
+		msaa3d.mode = RS::VIEWPORT_MSAA_DISABLED;
+	}
+
+	// We don't create our buffers right away because post effects can be made active at any time and change our buffer configuration.
+}
+
+void RenderSceneBuffersGLES3::_check_render_buffers() {
+	GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
+	GLES3::Config *config = GLES3::Config::get_singleton();
+
+	ERR_FAIL_COND(view_count == 0);
+
+	bool use_internal_buffer = scaling_3d_mode != RS::VIEWPORT_SCALING_3D_MODE_OFF || apply_color_adjustments_in_post;
+	GLenum depth_format = GL_DEPTH24_STENCIL8;
+	uint32_t depth_format_size = 4;
+	bool use_multiview = view_count > 1;
+
+	if ((!use_internal_buffer || internal3d.color != 0) && (msaa3d.mode == RS::VIEWPORT_MSAA_DISABLED || msaa3d.color != 0)) {
+		// already setup!
+		return;
+	}
+
+	if (use_internal_buffer && internal3d.color == 0) {
+		// Setup our internal buffer.
+		GLenum texture_target = use_multiview ? GL_TEXTURE_2D_ARRAY : GL_TEXTURE_2D;
+
+		// Create our color buffer.
+		glGenTextures(1, &internal3d.color);
+		glBindTexture(texture_target, internal3d.color);
+
+		if (use_multiview) {
+			glTexImage3D(texture_target, 0, color_internal_format, internal_size.x, internal_size.y, view_count, 0, color_format, color_type, nullptr);
+		} else {
+			glTexImage2D(texture_target, 0, color_internal_format, internal_size.x, internal_size.y, 0, color_format, color_type, nullptr);
+		}
+
+		glTexParameteri(texture_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+		GLES3::Utilities::get_singleton()->texture_allocated_data(internal3d.color, internal_size.x * internal_size.y * view_count * color_format_size, "3D color texture");
+
+		// Create our depth buffer.
+		glGenTextures(1, &internal3d.depth);
+		glBindTexture(texture_target, internal3d.depth);
+
+		if (use_multiview) {
+			glTexImage3D(texture_target, 0, depth_format, internal_size.x, internal_size.y, view_count, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr);
+		} else {
+			glTexImage2D(texture_target, 0, depth_format, internal_size.x, internal_size.y, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr);
+		}
+
+		glTexParameteri(texture_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+		GLES3::Utilities::get_singleton()->texture_allocated_data(internal3d.depth, internal_size.x * internal_size.y * view_count * depth_format_size, "3D depth texture");
+
+		// Create our internal 3D FBO.
+		// Note that if MSAA is used and our rt_msaa_* extensions are available, this is only used for blitting and effects.
+		glGenFramebuffers(1, &internal3d.fbo);
+		glBindFramebuffer(GL_FRAMEBUFFER, internal3d.fbo);
+
+#ifndef IOS_ENABLED
+		if (use_multiview) {
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, internal3d.color, 0, 0, view_count);
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, internal3d.depth, 0, 0, view_count);
+		} else {
+#else
+		{
+#endif
+			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture_target, internal3d.color, 0);
+			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, texture_target, internal3d.depth, 0);
+		}
+
+		GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+		if (status != GL_FRAMEBUFFER_COMPLETE) {
+			_clear_intermediate_buffers();
+			WARN_PRINT("Could not create 3D internal buffers, status: " + texture_storage->get_framebuffer_error(status));
+		}
+
+		glBindTexture(texture_target, 0);
+		glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+	}
+
+	if (msaa3d.mode != RS::VIEWPORT_MSAA_DISABLED && msaa3d.color == 0) {
+		// Setup MSAA.
+		const GLsizei samples[] = { 1, 2, 4, 8 };
+		msaa3d.samples = samples[msaa3d.mode];
+
+		// Constrain by limits of OpenGL driver.
+		if (msaa3d.samples > config->msaa_max_samples) {
+			msaa3d.samples = config->msaa_max_samples;
+		}
+
+		if (!use_multiview && !config->rt_msaa_supported) {
+			// Render to texture extensions not supported? fall back to MSAA framebuffer through GL_EXT_framebuffer_multisample.
+			// Note, if 2D MSAA matches 3D MSAA and we're not scaling, it would be ideal if we reuse our 2D MSAA buffer here.
+			// We can't however because we don't trigger a change in configuration if 2D MSAA changes.
+			// We'll accept the overhead in this situation.
+
+			msaa3d.needs_resolve = true;
+			msaa3d.check_fbo_cache = false;
+
+			// Create our color buffer.
+			glGenRenderbuffers(1, &msaa3d.color);
+			glBindRenderbuffer(GL_RENDERBUFFER, msaa3d.color);
+
+			glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa3d.samples, color_internal_format, internal_size.x, internal_size.y);
+			GLES3::Utilities::get_singleton()->render_buffer_allocated_data(msaa3d.color, internal_size.x * internal_size.y * view_count * 4 * msaa3d.samples, "MSAA 3D color render buffer");
+
+			// Create our depth buffer.
+			glGenRenderbuffers(1, &msaa3d.depth);
+			glBindRenderbuffer(GL_RENDERBUFFER, msaa3d.depth);
+
+			glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa3d.samples, depth_format, internal_size.x, internal_size.y);
+			GLES3::Utilities::get_singleton()->render_buffer_allocated_data(msaa3d.depth, internal_size.x * internal_size.y * view_count * depth_format_size * msaa3d.samples, "MSAA 3D depth render buffer");
+
+			// Create our MSAA 3D FBO.
+			glGenFramebuffers(1, &msaa3d.fbo);
+			glBindFramebuffer(GL_FRAMEBUFFER, msaa3d.fbo);
+
+			glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, msaa3d.color);
+			glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, msaa3d.depth);
+
+			GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+			if (status != GL_FRAMEBUFFER_COMPLETE) {
+				_clear_msaa3d_buffers();
+				msaa3d.mode = RS::VIEWPORT_MSAA_DISABLED;
+				WARN_PRINT("Could not create 3D MSAA buffers, status: " + texture_storage->get_framebuffer_error(status));
+			}
+
+			glBindRenderbuffer(GL_RENDERBUFFER, 0);
+			glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+#if !defined(IOS_ENABLED) && !defined(WEB_ENABLED)
+		} else if (use_multiview && !config->rt_msaa_multiview_supported) {
+			// Render to texture extensions not supported? fall back to MSAA textures through GL_EXT_multiview_texture_multisample.
+			msaa3d.needs_resolve = true;
+			msaa3d.check_fbo_cache = false;
+
+			// Create our color buffer.
+			glGenTextures(1, &msaa3d.color);
+			glBindTexture(GL_TEXTURE_2D_MULTISAMPLE_ARRAY, msaa3d.color);
+
+#ifdef ANDROID_ENABLED
+			glTexStorage3DMultisample(GL_TEXTURE_2D_MULTISAMPLE_ARRAY, msaa3d.samples, color_internal_format, internal_size.x, internal_size.y, view_count, GL_TRUE);
+#else
+			glTexImage3DMultisample(GL_TEXTURE_2D_MULTISAMPLE_ARRAY, msaa3d.samples, color_internal_format, internal_size.x, internal_size.y, view_count, GL_TRUE);
+#endif
+
+			GLES3::Utilities::get_singleton()->texture_allocated_data(msaa3d.color, internal_size.x * internal_size.y * view_count * color_format_size * msaa3d.samples, "MSAA 3D color texture");
+
+			// Create our depth buffer.
+			glGenTextures(1, &msaa3d.depth);
+			glBindTexture(GL_TEXTURE_2D_MULTISAMPLE_ARRAY, msaa3d.depth);
+
+#ifdef ANDROID_ENABLED
+			glTexStorage3DMultisample(GL_TEXTURE_2D_MULTISAMPLE_ARRAY, msaa3d.samples, depth_format, internal_size.x, internal_size.y, view_count, GL_TRUE);
+#else
+			glTexImage3DMultisample(GL_TEXTURE_2D_MULTISAMPLE_ARRAY, msaa3d.samples, depth_format, internal_size.x, internal_size.y, view_count, GL_TRUE);
+#endif
+
+			GLES3::Utilities::get_singleton()->texture_allocated_data(msaa3d.depth, internal_size.x * internal_size.y * view_count * depth_format_size * msaa3d.samples, "MSAA 3D depth texture");
+
+			// Create our MSAA 3D FBO.
+			glGenFramebuffers(1, &msaa3d.fbo);
+			glBindFramebuffer(GL_FRAMEBUFFER, msaa3d.fbo);
+
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, msaa3d.color, 0, 0, view_count);
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, msaa3d.depth, 0, 0, view_count);
+
+			GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+			if (status != GL_FRAMEBUFFER_COMPLETE) {
+				_clear_msaa3d_buffers();
+				msaa3d.mode = RS::VIEWPORT_MSAA_DISABLED;
+				WARN_PRINT("Could not create 3D MSAA buffers, status: " + texture_storage->get_framebuffer_error(status));
+			}
+
+			glBindTexture(GL_TEXTURE_2D_MULTISAMPLE_ARRAY, 0);
+			glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+#endif
+#if defined(ANDROID_ENABLED) || defined(WEB_ENABLED) // Only supported on OpenGLES!
+		} else if (!use_internal_buffer) {
+			// We are going to render directly into our render target textures,
+			// these can change from frame to frame as we cycle through swapchains,
+			// hence we'll use our FBO cache here.
+			msaa3d.needs_resolve = false;
+			msaa3d.check_fbo_cache = true;
+		} else if (use_internal_buffer) {
+			// We can combine MSAA and scaling/effects.
+			msaa3d.needs_resolve = false;
+			msaa3d.check_fbo_cache = false;
+
+			// We render to our internal textures, MSAA is only done in tile memory only.
+			// On mobile this means MSAA never leaves tile memory = efficiency!
+			glGenFramebuffers(1, &msaa3d.fbo);
+			glBindFramebuffer(GL_FRAMEBUFFER, msaa3d.fbo);
+
+			_rt_attach_textures(internal3d.color, internal3d.depth, msaa3d.samples, view_count, true);
+
+			GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+			if (status != GL_FRAMEBUFFER_COMPLETE) {
+				_clear_msaa3d_buffers();
+				msaa3d.mode = RS::VIEWPORT_MSAA_DISABLED;
+				WARN_PRINT("Could not create 3D MSAA framebuffer, status: " + texture_storage->get_framebuffer_error(status));
+			}
+
+			glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+#endif
+		} else {
+			// HUH? how did we get here?
+			WARN_PRINT_ONCE("MSAA is not supported on this device.");
+			msaa3d.mode = RS::VIEWPORT_MSAA_DISABLED;
+			msaa3d.samples = 1;
+			msaa3d.check_fbo_cache = false;
+		}
+	} else {
+		msaa3d.samples = 1;
+		msaa3d.check_fbo_cache = false;
+	}
+}
+
+void RenderSceneBuffersGLES3::configure_for_probe(Size2i p_size) {
+	internal_size = p_size;
+	target_size = p_size;
+	scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_OFF;
+	view_count = 1;
+}
+
+void RenderSceneBuffersGLES3::_clear_msaa3d_buffers() {
+	for (const FBDEF &cached_fbo : msaa3d.cached_fbos) {
+		GLuint fbo = cached_fbo.fbo;
+		glDeleteFramebuffers(1, &fbo);
+	}
+	msaa3d.cached_fbos.clear();
+
+	if (msaa3d.fbo) {
+		glDeleteFramebuffers(1, &msaa3d.fbo);
+		msaa3d.fbo = 0;
+	}
+
+	if (msaa3d.color != 0) {
+		if (view_count == 1) {
+			GLES3::Utilities::get_singleton()->render_buffer_free_data(msaa3d.color);
+		} else {
+			GLES3::Utilities::get_singleton()->texture_free_data(msaa3d.color);
+		}
+		msaa3d.color = 0;
+	}
+
+	if (msaa3d.depth != 0) {
+		if (view_count == 1) {
+			GLES3::Utilities::get_singleton()->render_buffer_free_data(msaa3d.depth);
+		} else {
+			GLES3::Utilities::get_singleton()->texture_free_data(msaa3d.depth);
+		}
+		msaa3d.depth = 0;
+	}
+}
+
+void RenderSceneBuffersGLES3::_clear_intermediate_buffers() {
+	if (internal3d.fbo) {
+		glDeleteFramebuffers(1, &internal3d.fbo);
+		internal3d.fbo = 0;
+	}
+
+	if (internal3d.color != 0) {
+		GLES3::Utilities::get_singleton()->texture_free_data(internal3d.color);
+		internal3d.color = 0;
+	}
+
+	if (internal3d.depth != 0) {
+		GLES3::Utilities::get_singleton()->texture_free_data(internal3d.depth);
+		internal3d.depth = 0;
+	}
+}
+
+void RenderSceneBuffersGLES3::check_backbuffer(bool p_need_color, bool p_need_depth) {
+	GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
+
+	// Setup our back buffer
+
+	if (backbuffer3d.fbo == 0) {
+		glGenFramebuffers(1, &backbuffer3d.fbo);
+	}
+
+	glBindFramebuffer(GL_FRAMEBUFFER, backbuffer3d.fbo);
+
+	bool use_multiview = view_count > 1 && GLES3::Config::get_singleton()->multiview_supported;
+	GLenum texture_target = use_multiview ? GL_TEXTURE_2D_ARRAY : GL_TEXTURE_2D;
+	GLenum depth_format = GL_DEPTH24_STENCIL8;
+	uint32_t depth_format_size = 4;
+
+	if (backbuffer3d.color == 0 && p_need_color) {
+		glGenTextures(1, &backbuffer3d.color);
+		glBindTexture(texture_target, backbuffer3d.color);
+
+		if (use_multiview) {
+			glTexImage3D(texture_target, 0, color_internal_format, internal_size.x, internal_size.y, view_count, 0, color_format, color_type, nullptr);
+		} else {
+			glTexImage2D(texture_target, 0, color_internal_format, internal_size.x, internal_size.y, 0, color_format, color_type, nullptr);
+		}
+
+		glTexParameteri(texture_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+		GLES3::Utilities::get_singleton()->texture_allocated_data(backbuffer3d.color, internal_size.x * internal_size.y * view_count * color_format_size, "3D Back buffer color texture");
+
+#ifndef IOS_ENABLED
+		if (use_multiview) {
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, backbuffer3d.color, 0, 0, view_count);
+		} else {
+#else
+		{
+#endif
+			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture_target, backbuffer3d.color, 0);
+		}
+	}
+
+	if (backbuffer3d.depth == 0 && p_need_depth) {
+		glGenTextures(1, &backbuffer3d.depth);
+		glBindTexture(texture_target, backbuffer3d.depth);
+
+		if (use_multiview) {
+			glTexImage3D(texture_target, 0, depth_format, internal_size.x, internal_size.y, view_count, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT, nullptr);
+		} else {
+			glTexImage2D(texture_target, 0, depth_format, internal_size.x, internal_size.y, 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT, nullptr);
+		}
+
+		glTexParameteri(texture_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		glTexParameteri(texture_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+		GLES3::Utilities::get_singleton()->texture_allocated_data(backbuffer3d.depth, internal_size.x * internal_size.y * view_count * depth_format_size, "3D back buffer depth texture");
+
+#ifndef IOS_ENABLED
+		if (use_multiview) {
+			glFramebufferTextureMultiviewOVR(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, backbuffer3d.depth, 0, 0, view_count);
+		} else {
+#else
+		{
+#endif
+			glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, texture_target, backbuffer3d.depth, 0);
+		}
+	}
+
+	GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+	if (status != GL_FRAMEBUFFER_COMPLETE) {
+		_clear_back_buffers();
+		WARN_PRINT("Could not create 3D back buffers, status: " + texture_storage->get_framebuffer_error(status));
+	}
+
+	glBindTexture(texture_target, 0);
+	glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+}
+
+void RenderSceneBuffersGLES3::_clear_back_buffers() {
+	if (backbuffer3d.fbo) {
+		glDeleteFramebuffers(1, &backbuffer3d.fbo);
+		backbuffer3d.fbo = 0;
+	}
+
+	if (backbuffer3d.color != 0) {
+		GLES3::Utilities::get_singleton()->texture_free_data(backbuffer3d.color);
+		backbuffer3d.color = 0;
+	}
+
+	if (backbuffer3d.depth != 0) {
+		GLES3::Utilities::get_singleton()->texture_free_data(backbuffer3d.depth);
+		backbuffer3d.depth = 0;
+	}
+}
+
+void RenderSceneBuffersGLES3::set_apply_color_adjustments_in_post(bool p_apply_in_post) {
+	apply_color_adjustments_in_post = p_apply_in_post;
+}
+
+void RenderSceneBuffersGLES3::check_glow_buffers() {
+	if (glow.levels[0].color != 0) {
+		// already have these setup..
+		return;
+	}
+
+	GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
+	Size2i level_size = internal_size;
+	for (int i = 0; i < 4; i++) {
+		level_size = Size2i(level_size.x >> 1, level_size.y >> 1).maxi(4);
+
+		glow.levels[i].size = level_size;
+
+		// Create our texture
+		glGenTextures(1, &glow.levels[i].color);
+		glActiveTexture(GL_TEXTURE0);
+		glBindTexture(GL_TEXTURE_2D, glow.levels[i].color);
+
+		glTexImage2D(GL_TEXTURE_2D, 0, color_internal_format, level_size.x, level_size.y, 0, color_format, color_type, nullptr);
+
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+
+		GLES3::Utilities::get_singleton()->texture_allocated_data(glow.levels[i].color, level_size.x * level_size.y * color_format_size, String("Glow buffer ") + String::num_int64(i));
+
+		// Create our FBO
+		glGenFramebuffers(1, &glow.levels[i].fbo);
+		glBindFramebuffer(GL_FRAMEBUFFER, glow.levels[i].fbo);
+
+		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, glow.levels[i].color, 0);
+
+		GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+		if (status != GL_FRAMEBUFFER_COMPLETE) {
+			WARN_PRINT("Could not create glow buffers, status: " + texture_storage->get_framebuffer_error(status));
+			_clear_glow_buffers();
+			break;
+		}
+	}
+
+	glBindTexture(GL_TEXTURE_2D, 0);
+	glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+}
+
+void RenderSceneBuffersGLES3::_clear_glow_buffers() {
+	for (int i = 0; i < 4; i++) {
+		if (glow.levels[i].fbo != 0) {
+			glDeleteFramebuffers(1, &glow.levels[i].fbo);
+			glow.levels[i].fbo = 0;
+		}
+
+		if (glow.levels[i].color != 0) {
+			GLES3::Utilities::get_singleton()->texture_free_data(glow.levels[i].color);
+			glow.levels[i].color = 0;
+		}
+	}
+}
+
+void RenderSceneBuffersGLES3::free_render_buffer_data() {
+	_clear_msaa3d_buffers();
+	_clear_intermediate_buffers();
+	_clear_back_buffers();
+	_clear_glow_buffers();
+}
+
+GLuint RenderSceneBuffersGLES3::get_render_fbo() {
+	GLES3::TextureStorage *texture_storage = GLES3::TextureStorage::get_singleton();
+	GLuint rt_fbo = 0;
+
+	_check_render_buffers();
+
+	if (msaa3d.check_fbo_cache) {
+		GLuint color = texture_storage->render_target_get_color(render_target);
+		GLuint depth = texture_storage->render_target_get_depth(render_target);
+
+		rt_fbo = _rt_get_cached_fbo(color, depth, msaa3d.samples, view_count);
+		if (rt_fbo == 0) {
+			// Somehow couldn't obtain this? Just render without MSAA.
+			rt_fbo = texture_storage->render_target_get_fbo(render_target);
+		}
+	} else if (msaa3d.fbo != 0) {
+		// We have an MSAA fbo, render to our MSAA buffer
+		return msaa3d.fbo;
+	} else if (internal3d.fbo != 0) {
+		// We have an internal buffer, render to our internal buffer!
+		return internal3d.fbo;
+	} else {
+		rt_fbo = texture_storage->render_target_get_fbo(render_target);
+	}
+
+	if (texture_storage->render_target_is_reattach_textures(render_target)) {
+		GLuint color = texture_storage->render_target_get_color(render_target);
+		GLuint depth = texture_storage->render_target_get_depth(render_target);
+		bool depth_has_stencil = texture_storage->render_target_get_depth_has_stencil(render_target);
+
+		glBindFramebuffer(GL_FRAMEBUFFER, rt_fbo);
+		_rt_attach_textures(color, depth, msaa3d.samples, view_count, depth_has_stencil);
+		glBindFramebuffer(GL_FRAMEBUFFER, texture_storage->system_fbo);
+	}
+
+	return rt_fbo;
+}
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/render_scene_buffers_gles3.h

@@ -0,0 +1,165 @@
+/**************************************************************************/
+/*  render_scene_buffers_gles3.h                                          */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "drivers/gles3/effects/glow.h"
+#include "servers/rendering/storage/render_scene_buffers.h"
+
+#include "platform_gl.h"
+
+class RenderSceneBuffersGLES3 : public RenderSceneBuffers {
+	GDCLASS(RenderSceneBuffersGLES3, RenderSceneBuffers);
+
+public:
+	Size2i internal_size; // Size of the buffer we render 3D content to.
+	Size2i target_size; // Size of our output buffer (render target).
+	RS::ViewportScaling3DMode scaling_3d_mode = RS::VIEWPORT_SCALING_3D_MODE_OFF;
+	//float fsr_sharpness = 0.2f;
+	//RS::ViewportScreenSpaceAA screen_space_aa = RS::VIEWPORT_SCREEN_SPACE_AA_DISABLED;
+	//bool use_taa = false;
+	//bool use_debanding = false;
+	uint32_t view_count = 1;
+	bool apply_color_adjustments_in_post = false;
+
+	RID render_target;
+
+	// Color format details from our render target
+	GLuint color_internal_format = GL_RGBA8;
+	GLuint color_format = GL_RGBA;
+	GLuint color_type = GL_UNSIGNED_BYTE;
+	uint32_t color_format_size = 4;
+
+	struct FBDEF {
+		GLuint color = 0;
+		GLuint depth = 0;
+		GLuint fbo = 0;
+	};
+
+	struct RTMSAA3D {
+		RS::ViewportMSAA mode = RS::VIEWPORT_MSAA_DISABLED;
+		bool needs_resolve = false;
+		GLsizei samples = 1;
+		GLuint color = 0;
+		GLuint depth = 0;
+		GLuint fbo = 0;
+
+		bool check_fbo_cache = false;
+		Vector<FBDEF> cached_fbos;
+	} msaa3d; // MSAA buffers used to render 3D
+
+	FBDEF internal3d; // buffers used to either render 3D (scaled/post) or to resolve MSAA into
+
+	FBDEF backbuffer3d; // our back buffer
+
+	// Buffers for our glow implementation
+	struct GLOW {
+		GLES3::Glow::GLOWLEVEL levels[4];
+	} glow;
+
+private:
+	void _check_render_buffers();
+	void _clear_msaa3d_buffers();
+	void _clear_intermediate_buffers();
+	void _clear_back_buffers();
+	void _clear_glow_buffers();
+
+	void _rt_attach_textures(GLuint p_color, GLuint p_depth, GLsizei p_samples, uint32_t p_view_count, bool p_depth_has_stencil);
+	GLuint _rt_get_cached_fbo(GLuint p_color, GLuint p_depth, GLsizei p_samples, uint32_t p_view_count);
+
+public:
+	RenderSceneBuffersGLES3();
+	virtual ~RenderSceneBuffersGLES3();
+	virtual void configure(const RenderSceneBuffersConfiguration *p_config) override;
+	void configure_for_probe(Size2i p_size);
+
+	virtual void set_anisotropic_filtering_level(RS::ViewportAnisotropicFiltering p_anisotropic_filtering_level) override {}
+	virtual void set_fsr_sharpness(float p_fsr_sharpness) override {}
+	virtual void set_texture_mipmap_bias(float p_texture_mipmap_bias) override {}
+	virtual void set_use_debanding(bool p_use_debanding) override {}
+	void set_apply_color_adjustments_in_post(bool p_apply_in_post);
+
+	void free_render_buffer_data();
+
+	void check_backbuffer(bool p_need_color, bool p_need_depth); // Check if we need to initialize our backbuffer.
+	void check_glow_buffers(); // Check if we need to initialize our glow buffers.
+
+	GLuint get_render_fbo();
+	GLuint get_msaa3d_fbo() {
+		_check_render_buffers();
+		return msaa3d.fbo;
+	}
+	GLuint get_msaa3d_color() {
+		_check_render_buffers();
+		return msaa3d.color;
+	}
+	GLuint get_msaa3d_depth() {
+		_check_render_buffers();
+		return msaa3d.depth;
+	}
+	bool get_msaa_needs_resolve() {
+		_check_render_buffers();
+		return msaa3d.needs_resolve;
+	}
+	GLuint get_internal_fbo() {
+		_check_render_buffers();
+		return internal3d.fbo;
+	}
+	GLuint get_internal_color() {
+		_check_render_buffers();
+		return internal3d.color;
+	}
+	GLuint get_internal_depth() {
+		_check_render_buffers();
+		return internal3d.depth;
+	}
+	GLuint get_backbuffer_fbo() const { return backbuffer3d.fbo; }
+	GLuint get_backbuffer() const { return backbuffer3d.color; }
+	GLuint get_backbuffer_depth() const { return backbuffer3d.depth; }
+
+	const GLES3::Glow::GLOWLEVEL *get_glow_buffers() const { return &glow.levels[0]; }
+
+	// Getters
+
+	_FORCE_INLINE_ RID get_render_target() const { return render_target; }
+	_FORCE_INLINE_ uint32_t get_view_count() const { return view_count; }
+	_FORCE_INLINE_ Size2i get_internal_size() const { return internal_size; }
+	_FORCE_INLINE_ Size2i get_target_size() const { return target_size; }
+	_FORCE_INLINE_ RS::ViewportScaling3DMode get_scaling_3d_mode() const { return scaling_3d_mode; }
+	//_FORCE_INLINE_ float get_fsr_sharpness() const { return fsr_sharpness; }
+	_FORCE_INLINE_ RS::ViewportMSAA get_msaa_3d() const { return msaa3d.mode; }
+	//_FORCE_INLINE_ RS::ViewportScreenSpaceAA get_screen_space_aa() const { return screen_space_aa; }
+	//_FORCE_INLINE_ bool get_use_taa() const { return use_taa; }
+	//_FORCE_INLINE_ bool get_use_debanding() const { return use_debanding; }
+};
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/texture_storage.h

@@ -0,0 +1,737 @@
+/**************************************************************************/
+/*  texture_storage.h                                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "platform_gl.h"
+
+#include "config.h"
+#include "core/io/image.h"
+#include "core/os/os.h"
+#include "core/templates/rid_owner.h"
+#include "servers/rendering/renderer_compositor.h"
+#include "servers/rendering/storage/texture_storage.h"
+
+#include "drivers/gles3/shaders/canvas_sdf.glsl.gen.h"
+
+namespace GLES3 {
+
+#define _GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
+#define _GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
+
+#define _EXT_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
+#define _EXT_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
+#define _EXT_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
+
+#define _EXT_COMPRESSED_RED_RGTC1_EXT 0x8DBB
+#define _EXT_COMPRESSED_RED_RGTC1 0x8DBB
+#define _EXT_COMPRESSED_SIGNED_RED_RGTC1 0x8DBC
+#define _EXT_COMPRESSED_RG_RGTC2 0x8DBD
+#define _EXT_COMPRESSED_SIGNED_RG_RGTC2 0x8DBE
+#define _EXT_COMPRESSED_SIGNED_RED_RGTC1_EXT 0x8DBC
+#define _EXT_COMPRESSED_RED_GREEN_RGTC2_EXT 0x8DBD
+#define _EXT_COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT 0x8DBE
+#define _EXT_ETC1_RGB8_OES 0x8D64
+
+#define _EXT_COMPRESSED_RGBA_BPTC_UNORM 0x8E8C
+#define _EXT_COMPRESSED_SRGB_ALPHA_BPTC_UNORM 0x8E8D
+#define _EXT_COMPRESSED_RGB_BPTC_SIGNED_FLOAT 0x8E8E
+#define _EXT_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT 0x8E8F
+
+#define _EXT_COMPRESSED_R11_EAC 0x9270
+#define _EXT_COMPRESSED_SIGNED_R11_EAC 0x9271
+#define _EXT_COMPRESSED_RG11_EAC 0x9272
+#define _EXT_COMPRESSED_SIGNED_RG11_EAC 0x9273
+#define _EXT_COMPRESSED_RGB8_ETC2 0x9274
+#define _EXT_COMPRESSED_SRGB8_ETC2 0x9275
+#define _EXT_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9276
+#define _EXT_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9277
+#define _EXT_COMPRESSED_RGBA8_ETC2_EAC 0x9278
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC 0x9279
+
+#define _EXT_COMPRESSED_RGBA_ASTC_4x4_KHR 0x93B0
+#define _EXT_COMPRESSED_RGBA_ASTC_5x4_KHR 0x93B1
+#define _EXT_COMPRESSED_RGBA_ASTC_5x5_KHR 0x93B2
+#define _EXT_COMPRESSED_RGBA_ASTC_6x5_KHR 0x93B3
+#define _EXT_COMPRESSED_RGBA_ASTC_6x6_KHR 0x93B4
+#define _EXT_COMPRESSED_RGBA_ASTC_8x5_KHR 0x93B5
+#define _EXT_COMPRESSED_RGBA_ASTC_8x6_KHR 0x93B6
+#define _EXT_COMPRESSED_RGBA_ASTC_8x8_KHR 0x93B7
+#define _EXT_COMPRESSED_RGBA_ASTC_10x5_KHR 0x93B8
+#define _EXT_COMPRESSED_RGBA_ASTC_10x6_KHR 0x93B9
+#define _EXT_COMPRESSED_RGBA_ASTC_10x8_KHR 0x93BA
+#define _EXT_COMPRESSED_RGBA_ASTC_10x10_KHR 0x93BB
+#define _EXT_COMPRESSED_RGBA_ASTC_12x10_KHR 0x93BC
+#define _EXT_COMPRESSED_RGBA_ASTC_12x12_KHR 0x93BD
+
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR 0x93D0
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR 0x93D1
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR 0x93D2
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR 0x93D3
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR 0x93D4
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR 0x93D5
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR 0x93D6
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR 0x93D7
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR 0x93D8
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR 0x93D9
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR 0x93DA
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR 0x93DB
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR 0x93DC
+#define _EXT_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR 0x93DD
+
+#define _GL_TEXTURE_EXTERNAL_OES 0x8D65
+
+#define _EXT_TEXTURE_CUBE_MAP_SEAMLESS 0x884F
+
+enum DefaultGLTexture {
+	DEFAULT_GL_TEXTURE_WHITE,
+	DEFAULT_GL_TEXTURE_BLACK,
+	DEFAULT_GL_TEXTURE_TRANSPARENT,
+	DEFAULT_GL_TEXTURE_NORMAL,
+	DEFAULT_GL_TEXTURE_ANISO,
+	DEFAULT_GL_TEXTURE_DEPTH,
+	DEFAULT_GL_TEXTURE_CUBEMAP_BLACK,
+	//DEFAULT_GL_TEXTURE_CUBEMAP_ARRAY_BLACK, // Cubemap Arrays not supported in GL 3.3 or GL ES 3.0
+	DEFAULT_GL_TEXTURE_CUBEMAP_WHITE,
+	DEFAULT_GL_TEXTURE_3D_WHITE,
+	DEFAULT_GL_TEXTURE_3D_BLACK,
+	DEFAULT_GL_TEXTURE_2D_ARRAY_WHITE,
+	DEFAULT_GL_TEXTURE_2D_UINT,
+	DEFAULT_GL_TEXTURE_EXT,
+	DEFAULT_GL_TEXTURE_MAX
+};
+
+struct CanvasTexture {
+	RID diffuse;
+	RID normal_map;
+	RID specular;
+	Color specular_color = Color(1, 1, 1, 1);
+	float shininess = 1.0;
+
+	RS::CanvasItemTextureFilter texture_filter = RS::CANVAS_ITEM_TEXTURE_FILTER_DEFAULT;
+	RS::CanvasItemTextureRepeat texture_repeat = RS::CANVAS_ITEM_TEXTURE_REPEAT_DEFAULT;
+};
+
+struct RenderTarget;
+
+struct Texture {
+	RID self;
+
+	bool is_proxy = false;
+	bool is_from_native_handle = false;
+	bool is_render_target = false;
+
+	RID proxy_to;
+	Vector<RID> proxies;
+
+	String path;
+	int width = 0;
+	int height = 0;
+	int depth = 0;
+	int mipmaps = 1;
+	int layers = 1;
+	int alloc_width = 0;
+	int alloc_height = 0;
+	Image::Format format = Image::FORMAT_R8;
+	Image::Format real_format = Image::FORMAT_R8;
+
+	enum Type {
+		TYPE_2D,
+		TYPE_LAYERED,
+		TYPE_3D
+	};
+
+	Type type = TYPE_2D;
+	RS::TextureLayeredType layered_type = RS::TEXTURE_LAYERED_2D_ARRAY;
+
+	GLenum target = GL_TEXTURE_2D;
+	GLenum gl_format_cache = 0;
+	GLenum gl_internal_format_cache = 0;
+	GLenum gl_type_cache = 0;
+
+	int total_data_size = 0;
+
+	bool compressed = false;
+
+	bool resize_to_po2 = false;
+
+	bool active = false;
+	GLuint tex_id = 0;
+
+	uint16_t stored_cube_sides = 0;
+
+	RenderTarget *render_target = nullptr;
+
+	Ref<Image> image_cache_2d;
+	Vector<Ref<Image>> image_cache_3d;
+
+	bool redraw_if_visible = false;
+
+	RS::TextureDetectCallback detect_3d_callback = nullptr;
+	void *detect_3d_callback_ud = nullptr;
+
+	RS::TextureDetectCallback detect_normal_callback = nullptr;
+	void *detect_normal_callback_ud = nullptr;
+
+	RS::TextureDetectRoughnessCallback detect_roughness_callback = nullptr;
+	void *detect_roughness_callback_ud = nullptr;
+
+	CanvasTexture *canvas_texture = nullptr;
+
+	void copy_from(const Texture &o) {
+		proxy_to = o.proxy_to;
+		is_proxy = o.is_proxy;
+		is_from_native_handle = o.is_from_native_handle;
+		width = o.width;
+		height = o.height;
+		alloc_width = o.alloc_width;
+		alloc_height = o.alloc_height;
+		format = o.format;
+		type = o.type;
+		layered_type = o.layered_type;
+		target = o.target;
+		total_data_size = o.total_data_size;
+		compressed = o.compressed;
+		mipmaps = o.mipmaps;
+		resize_to_po2 = o.resize_to_po2;
+		active = o.active;
+		tex_id = o.tex_id;
+		stored_cube_sides = o.stored_cube_sides;
+		render_target = o.render_target;
+		is_render_target = o.is_render_target;
+		redraw_if_visible = o.redraw_if_visible;
+		detect_3d_callback = o.detect_3d_callback;
+		detect_3d_callback_ud = o.detect_3d_callback_ud;
+		detect_normal_callback = o.detect_normal_callback;
+		detect_normal_callback_ud = o.detect_normal_callback_ud;
+		detect_roughness_callback = o.detect_roughness_callback;
+		detect_roughness_callback_ud = o.detect_roughness_callback_ud;
+	}
+
+	// texture state
+	void gl_set_filter(RS::CanvasItemTextureFilter p_filter) {
+		if (p_filter == state_filter) {
+			return;
+		}
+		Config *config = Config::get_singleton();
+		state_filter = p_filter;
+		GLenum pmin = GL_NEAREST;
+		GLenum pmag = GL_NEAREST;
+		GLint max_lod = 0;
+		GLfloat anisotropy = 1.0f;
+		switch (state_filter) {
+			case RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST: {
+				pmin = GL_NEAREST;
+				pmag = GL_NEAREST;
+				max_lod = 0;
+			} break;
+			case RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR: {
+				pmin = GL_LINEAR;
+				pmag = GL_LINEAR;
+				max_lod = 0;
+			} break;
+			case RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST_WITH_MIPMAPS_ANISOTROPIC: {
+				anisotropy = config->anisotropic_level;
+			};
+				[[fallthrough]];
+			case RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST_WITH_MIPMAPS: {
+				pmag = GL_NEAREST;
+				if (mipmaps <= 1) {
+					pmin = GL_NEAREST;
+					max_lod = 0;
+				} else if (config->use_nearest_mip_filter) {
+					pmin = GL_NEAREST_MIPMAP_NEAREST;
+					max_lod = 1000;
+				} else {
+					pmin = GL_NEAREST_MIPMAP_LINEAR;
+					max_lod = 1000;
+				}
+			} break;
+			case RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR_WITH_MIPMAPS_ANISOTROPIC: {
+				anisotropy = config->anisotropic_level;
+			};
+				[[fallthrough]];
+			case RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR_WITH_MIPMAPS: {
+				pmag = GL_LINEAR;
+				if (mipmaps <= 1) {
+					pmin = GL_LINEAR;
+					max_lod = 0;
+				} else if (config->use_nearest_mip_filter) {
+					pmin = GL_LINEAR_MIPMAP_NEAREST;
+					max_lod = 1000;
+				} else {
+					pmin = GL_LINEAR_MIPMAP_LINEAR;
+					max_lod = 1000;
+				}
+			} break;
+			default: {
+				return;
+			} break;
+		}
+		glTexParameteri(target, GL_TEXTURE_MIN_FILTER, pmin);
+		glTexParameteri(target, GL_TEXTURE_MAG_FILTER, pmag);
+		glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
+		glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, max_lod);
+		if (config->support_anisotropic_filter) {
+			glTexParameterf(target, _GL_TEXTURE_MAX_ANISOTROPY_EXT, anisotropy);
+		}
+	}
+	void gl_set_repeat(RS::CanvasItemTextureRepeat p_repeat) {
+		if (p_repeat == state_repeat) {
+			return;
+		}
+		state_repeat = p_repeat;
+		GLenum prep = GL_CLAMP_TO_EDGE;
+		switch (state_repeat) {
+			case RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED: {
+				prep = GL_CLAMP_TO_EDGE;
+			} break;
+			case RS::CANVAS_ITEM_TEXTURE_REPEAT_ENABLED: {
+				prep = GL_REPEAT;
+			} break;
+			case RS::CANVAS_ITEM_TEXTURE_REPEAT_MIRROR: {
+				prep = GL_MIRRORED_REPEAT;
+			} break;
+			default: {
+				return;
+			} break;
+		}
+		glTexParameteri(target, GL_TEXTURE_WRAP_T, prep);
+		glTexParameteri(target, GL_TEXTURE_WRAP_R, prep);
+		glTexParameteri(target, GL_TEXTURE_WRAP_S, prep);
+	}
+
+private:
+	RS::CanvasItemTextureFilter state_filter = RS::CANVAS_ITEM_TEXTURE_FILTER_MAX;
+	RS::CanvasItemTextureRepeat state_repeat = RS::CANVAS_ITEM_TEXTURE_REPEAT_MAX;
+};
+
+struct RenderTarget {
+	Point2i position = Point2i(0, 0);
+	Size2i size = Size2i(0, 0);
+	uint32_t view_count = 1;
+	int mipmap_count = 1;
+	RID self;
+	GLuint fbo = 0;
+	GLuint color = 0;
+	GLuint depth = 0;
+	GLuint backbuffer_fbo = 0;
+	GLuint backbuffer = 0;
+	GLuint backbuffer_depth = 0;
+	bool depth_has_stencil = true;
+
+	bool hdr = false; // For Compatibility this effects both 2D and 3D rendering!
+	GLuint color_internal_format = GL_RGBA8;
+	GLuint color_format = GL_RGBA;
+	GLuint color_type = GL_UNSIGNED_BYTE;
+	uint32_t color_format_size = 4;
+	Image::Format image_format = Image::FORMAT_RGBA8;
+
+	GLuint sdf_texture_write = 0;
+	GLuint sdf_texture_write_fb = 0;
+	GLuint sdf_texture_process[2] = { 0, 0 };
+	GLuint sdf_texture_read = 0;
+	RS::ViewportSDFOversize sdf_oversize = RS::VIEWPORT_SDF_OVERSIZE_120_PERCENT;
+	RS::ViewportSDFScale sdf_scale = RS::VIEWPORT_SDF_SCALE_50_PERCENT;
+	Size2i process_size;
+	bool sdf_enabled = false;
+
+	bool is_transparent = false;
+	bool direct_to_screen = false;
+
+	bool used_in_frame = false;
+	RS::ViewportMSAA msaa = RS::VIEWPORT_MSAA_DISABLED;
+	bool reattach_textures = false;
+
+	Rect2i render_region;
+
+	struct RTOverridden {
+		bool is_overridden = false;
+		bool depth_has_stencil = false;
+		RID color;
+		RID depth;
+		RID velocity;
+
+		struct FBOCacheEntry {
+			GLuint fbo;
+			GLuint color;
+			GLuint depth;
+			Size2i size;
+			Vector<GLuint> allocated_textures;
+			bool depth_has_stencil;
+		};
+		RBMap<uint32_t, FBOCacheEntry> fbo_cache;
+	} overridden;
+
+	RID texture;
+
+	Color clear_color = Color(1, 1, 1, 1);
+	bool clear_requested = false;
+
+	RenderTarget() {
+	}
+};
+
+class TextureStorage : public RendererTextureStorage {
+private:
+	static TextureStorage *singleton;
+
+	RID default_gl_textures[DEFAULT_GL_TEXTURE_MAX];
+
+	/* Canvas Texture API */
+
+	RID_Owner<CanvasTexture, true> canvas_texture_owner;
+
+	/* Texture API */
+	// Textures can be created from threads, so this RID_Owner is thread safe.
+	mutable RID_Owner<Texture, true> texture_owner;
+
+	Ref<Image> _get_gl_image_and_format(const Ref<Image> &p_image, Image::Format p_format, Image::Format &r_real_format, GLenum &r_gl_format, GLenum &r_gl_internal_format, GLenum &r_gl_type, bool &r_compressed, bool p_force_decompress) const;
+
+	/* TEXTURE ATLAS API */
+
+	struct TextureAtlas {
+		struct Texture {
+			int users;
+			Rect2 uv_rect;
+		};
+
+		struct SortItem {
+			RID texture;
+			Size2i pixel_size;
+			Size2i size;
+			Point2i pos;
+
+			bool operator<(const SortItem &p_item) const {
+				//sort larger to smaller
+				if (size.height == p_item.size.height) {
+					return size.width > p_item.size.width;
+				} else {
+					return size.height > p_item.size.height;
+				}
+			}
+		};
+
+		HashMap<RID, Texture> textures;
+		bool dirty = true;
+
+		GLuint texture = 0;
+		GLuint framebuffer = 0;
+		Size2i size;
+	} texture_atlas;
+
+	/* Render Target API */
+
+	mutable RID_Owner<RenderTarget> render_target_owner;
+
+	void _clear_render_target(RenderTarget *rt);
+	void _update_render_target(RenderTarget *rt);
+	void _create_render_target_backbuffer(RenderTarget *rt);
+	void _render_target_allocate_sdf(RenderTarget *rt);
+	void _render_target_clear_sdf(RenderTarget *rt);
+	Rect2i _render_target_get_sdf_rect(const RenderTarget *rt) const;
+
+	void _texture_set_data(RID p_texture, const Ref<Image> &p_image, int p_layer, bool p_initialize);
+	void _texture_set_3d_data(RID p_texture, const Vector<Ref<Image>> &p_data, bool p_initialize);
+	void _texture_set_swizzle(Texture *p_texture, Image::Format p_real_format);
+	Vector<Ref<Image>> _texture_3d_read_framebuffer(Texture *p_texture) const;
+
+	struct RenderTargetSDF {
+		CanvasSdfShaderGLES3 shader;
+		RID shader_version;
+	} sdf_shader;
+
+public:
+	static TextureStorage *get_singleton();
+
+	TextureStorage();
+	virtual ~TextureStorage();
+
+	_FORCE_INLINE_ RID texture_gl_get_default(DefaultGLTexture p_texture) {
+		return default_gl_textures[p_texture];
+	}
+
+	/* Canvas Texture API */
+
+	CanvasTexture *get_canvas_texture(RID p_rid) { return canvas_texture_owner.get_or_null(p_rid); }
+	bool owns_canvas_texture(RID p_rid) { return canvas_texture_owner.owns(p_rid); }
+
+	virtual RID canvas_texture_allocate() override;
+	virtual void canvas_texture_initialize(RID p_rid) override;
+	virtual void canvas_texture_free(RID p_rid) override;
+
+	virtual void canvas_texture_set_channel(RID p_canvas_texture, RS::CanvasTextureChannel p_channel, RID p_texture) override;
+	virtual void canvas_texture_set_shading_parameters(RID p_canvas_texture, const Color &p_base_color, float p_shininess) override;
+
+	virtual void canvas_texture_set_texture_filter(RID p_item, RS::CanvasItemTextureFilter p_filter) override;
+	virtual void canvas_texture_set_texture_repeat(RID p_item, RS::CanvasItemTextureRepeat p_repeat) override;
+
+	/* Texture API */
+
+	Texture *get_texture(RID p_rid) const {
+		Texture *texture = texture_owner.get_or_null(p_rid);
+		if (texture && texture->is_proxy) {
+			return texture_owner.get_or_null(texture->proxy_to);
+		}
+		return texture;
+	}
+	bool owns_texture(RID p_rid) { return texture_owner.owns(p_rid); }
+
+	void texture_2d_initialize_from_texture(RID p_texture, Texture &p_tex) {
+		texture_owner.initialize_rid(p_texture, p_tex);
+	}
+
+	virtual RID texture_allocate() override;
+	virtual void texture_free(RID p_rid) override;
+
+	virtual void texture_2d_initialize(RID p_texture, const Ref<Image> &p_image) override;
+	virtual void texture_2d_layered_initialize(RID p_texture, const Vector<Ref<Image>> &p_layers, RS::TextureLayeredType p_layered_type) override;
+	virtual void texture_3d_initialize(RID p_texture, Image::Format, int p_width, int p_height, int p_depth, bool p_mipmaps, const Vector<Ref<Image>> &p_data) override;
+	virtual void texture_external_initialize(RID p_texture, int p_width, int p_height, uint64_t p_external_buffer) override;
+	virtual void texture_proxy_initialize(RID p_texture, RID p_base) override; //all slices, then all the mipmaps, must be coherent
+
+	virtual RID texture_create_from_native_handle(RS::TextureType p_type, Image::Format p_format, uint64_t p_native_handle, int p_width, int p_height, int p_depth, int p_layers = 1, RS::TextureLayeredType p_layered_type = RS::TEXTURE_LAYERED_2D_ARRAY) override;
+
+	virtual void texture_2d_update(RID p_texture, const Ref<Image> &p_image, int p_layer = 0) override;
+	virtual void texture_3d_update(RID p_texture, const Vector<Ref<Image>> &p_data) override;
+	virtual void texture_external_update(RID p_texture, int p_width, int p_height, uint64_t p_external_buffer) override;
+	virtual void texture_proxy_update(RID p_proxy, RID p_base) override;
+
+	Ref<Image> texture_2d_placeholder;
+	Vector<Ref<Image>> texture_2d_array_placeholder;
+	Vector<Ref<Image>> cubemap_placeholder;
+	Vector<Ref<Image>> texture_3d_placeholder;
+
+	//these two APIs can be used together or in combination with the others.
+	virtual void texture_2d_placeholder_initialize(RID p_texture) override;
+	virtual void texture_2d_layered_placeholder_initialize(RID p_texture, RenderingServer::TextureLayeredType p_layered_type) override;
+	virtual void texture_3d_placeholder_initialize(RID p_texture) override;
+
+	virtual Ref<Image> texture_2d_get(RID p_texture) const override;
+	virtual Ref<Image> texture_2d_layer_get(RID p_texture, int p_layer) const override;
+	virtual Vector<Ref<Image>> texture_3d_get(RID p_texture) const override;
+
+	virtual void texture_replace(RID p_texture, RID p_by_texture) override;
+	virtual void texture_set_size_override(RID p_texture, int p_width, int p_height) override;
+
+	virtual void texture_set_path(RID p_texture, const String &p_path) override;
+	virtual String texture_get_path(RID p_texture) const override;
+
+	virtual void texture_set_detect_3d_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata) override;
+	void texture_set_detect_srgb_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata);
+	virtual void texture_set_detect_normal_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata) override;
+	virtual void texture_set_detect_roughness_callback(RID p_texture, RS::TextureDetectRoughnessCallback p_callback, void *p_userdata) override;
+
+	virtual void texture_debug_usage(List<RS::TextureInfo> *r_info) override;
+
+	virtual void texture_set_force_redraw_if_visible(RID p_texture, bool p_enable) override;
+
+	virtual Size2 texture_size_with_proxy(RID p_proxy) override;
+
+	virtual void texture_rd_initialize(RID p_texture, const RID &p_rd_texture, const RS::TextureLayeredType p_layer_type = RS::TEXTURE_LAYERED_2D_ARRAY) override;
+	virtual RID texture_get_rd_texture(RID p_texture, bool p_srgb = false) const override;
+	virtual uint64_t texture_get_native_handle(RID p_texture, bool p_srgb = false) const override;
+
+	void texture_set_data(RID p_texture, const Ref<Image> &p_image, int p_layer = 0);
+	virtual Image::Format texture_get_format(RID p_texture) const override;
+	uint32_t texture_get_texid(RID p_texture) const;
+	Vector3i texture_get_size(RID p_texture) const;
+	uint32_t texture_get_width(RID p_texture) const;
+	uint32_t texture_get_height(RID p_texture) const;
+	uint32_t texture_get_depth(RID p_texture) const;
+	void texture_bind(RID p_texture, uint32_t p_texture_no);
+
+	/* TEXTURE ATLAS API */
+
+	void update_texture_atlas();
+
+	GLuint texture_atlas_get_texture() const;
+	_FORCE_INLINE_ Rect2 texture_atlas_get_texture_rect(RID p_texture) {
+		TextureAtlas::Texture *t = texture_atlas.textures.getptr(p_texture);
+		if (!t) {
+			return Rect2();
+		}
+
+		return t->uv_rect;
+	}
+
+	void texture_add_to_texture_atlas(RID p_texture);
+	void texture_remove_from_texture_atlas(RID p_texture);
+	void texture_atlas_mark_dirty_on_texture(RID p_texture);
+	void texture_atlas_remove_texture(RID p_texture);
+
+	/* DECAL API */
+
+	virtual RID decal_allocate() override;
+	virtual void decal_initialize(RID p_rid) override;
+	virtual void decal_free(RID p_rid) override {}
+
+	virtual void decal_set_size(RID p_decal, const Vector3 &p_size) override;
+	virtual void decal_set_texture(RID p_decal, RS::DecalTexture p_type, RID p_texture) override;
+	virtual void decal_set_emission_energy(RID p_decal, float p_energy) override;
+	virtual void decal_set_albedo_mix(RID p_decal, float p_mix) override;
+	virtual void decal_set_modulate(RID p_decal, const Color &p_modulate) override;
+	virtual void decal_set_cull_mask(RID p_decal, uint32_t p_layers) override;
+	virtual void decal_set_distance_fade(RID p_decal, bool p_enabled, float p_begin, float p_length) override;
+	virtual void decal_set_fade(RID p_decal, float p_above, float p_below) override;
+	virtual void decal_set_normal_fade(RID p_decal, float p_fade) override;
+
+	virtual AABB decal_get_aabb(RID p_decal) const override;
+	virtual uint32_t decal_get_cull_mask(RID p_decal) const override { return 0; }
+
+	virtual void texture_add_to_decal_atlas(RID p_texture, bool p_panorama_to_dp = false) override {}
+	virtual void texture_remove_from_decal_atlas(RID p_texture, bool p_panorama_to_dp = false) override {}
+
+	/* DECAL INSTANCE */
+
+	virtual RID decal_instance_create(RID p_decal) override { return RID(); }
+	virtual void decal_instance_free(RID p_decal_instance) override {}
+	virtual void decal_instance_set_transform(RID p_decal, const Transform3D &p_transform) override {}
+	virtual void decal_instance_set_sorting_offset(RID p_decal_instance, float p_sorting_offset) override {}
+
+	/* RENDER TARGET API */
+
+	static GLuint system_fbo;
+
+	RenderTarget *get_render_target(RID p_rid) { return render_target_owner.get_or_null(p_rid); }
+	bool owns_render_target(RID p_rid) { return render_target_owner.owns(p_rid); }
+
+	void check_backbuffer(RenderTarget *rt, const bool uses_screen_texture, const bool uses_depth_texture);
+
+	virtual RID render_target_create() override;
+	virtual void render_target_free(RID p_rid) override;
+
+	virtual void render_target_set_position(RID p_render_target, int p_x, int p_y) override;
+	virtual Point2i render_target_get_position(RID p_render_target) const override;
+	virtual void render_target_set_size(RID p_render_target, int p_width, int p_height, uint32_t p_view_count) override;
+	virtual Size2i render_target_get_size(RID p_render_target) const override;
+	virtual void render_target_set_transparent(RID p_render_target, bool p_is_transparent) override;
+	virtual bool render_target_get_transparent(RID p_render_target) const override;
+	virtual void render_target_set_direct_to_screen(RID p_render_target, bool p_direct_to_screen) override;
+	virtual bool render_target_get_direct_to_screen(RID p_render_target) const override;
+	virtual bool render_target_was_used(RID p_render_target) const override;
+	void render_target_clear_used(RID p_render_target);
+	virtual void render_target_set_msaa(RID p_render_target, RS::ViewportMSAA p_msaa) override;
+	virtual RS::ViewportMSAA render_target_get_msaa(RID p_render_target) const override;
+	virtual void render_target_set_msaa_needs_resolve(RID p_render_target, bool p_needs_resolve) override {}
+	virtual bool render_target_get_msaa_needs_resolve(RID p_render_target) const override { return false; }
+	virtual void render_target_do_msaa_resolve(RID p_render_target) override {}
+	virtual void render_target_set_use_hdr(RID p_render_target, bool p_use_hdr_2d) override;
+	virtual bool render_target_is_using_hdr(RID p_render_target) const override;
+	virtual void render_target_set_use_debanding(RID p_render_target, bool p_use_debanding) override {}
+	virtual bool render_target_is_using_debanding(RID p_render_target) const override { return false; }
+
+	// new
+	void render_target_set_as_unused(RID p_render_target) override {
+		render_target_clear_used(p_render_target);
+	}
+
+	GLuint render_target_get_color_internal_format(RID p_render_target) const;
+	GLuint render_target_get_color_format(RID p_render_target) const;
+	GLuint render_target_get_color_type(RID p_render_target) const;
+	uint32_t render_target_get_color_format_size(RID p_render_target) const;
+
+	void render_target_request_clear(RID p_render_target, const Color &p_clear_color) override;
+	bool render_target_is_clear_requested(RID p_render_target) override;
+	Color render_target_get_clear_request_color(RID p_render_target) override;
+	void render_target_disable_clear_request(RID p_render_target) override;
+	void render_target_do_clear_request(RID p_render_target) override;
+
+	GLuint render_target_get_fbo(RID p_render_target) const;
+	GLuint render_target_get_color(RID p_render_target) const;
+	GLuint render_target_get_depth(RID p_render_target) const;
+	bool render_target_get_depth_has_stencil(RID p_render_target) const;
+	void render_target_set_reattach_textures(RID p_render_target, bool p_reattach_textures) const;
+	bool render_target_is_reattach_textures(RID p_render_target) const;
+
+	virtual void render_target_set_sdf_size_and_scale(RID p_render_target, RS::ViewportSDFOversize p_size, RS::ViewportSDFScale p_scale) override;
+	virtual Rect2i render_target_get_sdf_rect(RID p_render_target) const override;
+	GLuint render_target_get_sdf_texture(RID p_render_target);
+	GLuint render_target_get_sdf_framebuffer(RID p_render_target);
+	void render_target_sdf_process(RID p_render_target);
+	virtual void render_target_mark_sdf_enabled(RID p_render_target, bool p_enabled) override;
+	bool render_target_is_sdf_enabled(RID p_render_target) const;
+
+	void render_target_copy_to_back_buffer(RID p_render_target, const Rect2i &p_region, bool p_gen_mipmaps);
+	void render_target_clear_back_buffer(RID p_render_target, const Rect2i &p_region, const Color &p_color);
+	void render_target_gen_back_buffer_mipmaps(RID p_render_target, const Rect2i &p_region);
+
+	virtual void render_target_set_vrs_mode(RID p_render_target, RS::ViewportVRSMode p_mode) override {}
+	virtual RS::ViewportVRSMode render_target_get_vrs_mode(RID p_render_target) const override { return RS::VIEWPORT_VRS_DISABLED; }
+	virtual void render_target_set_vrs_update_mode(RID p_render_target, RS::ViewportVRSUpdateMode p_mode) override {}
+	virtual RS::ViewportVRSUpdateMode render_target_get_vrs_update_mode(RID p_render_target) const override { return RS::VIEWPORT_VRS_UPDATE_DISABLED; }
+	virtual void render_target_set_vrs_texture(RID p_render_target, RID p_texture) override {}
+	virtual RID render_target_get_vrs_texture(RID p_render_target) const override { return RID(); }
+
+	virtual void render_target_set_override(RID p_render_target, RID p_color_texture, RID p_depth_texture, RID p_velocity_texture, RID p_velocity_depth_texture) override;
+	virtual RID render_target_get_override_color(RID p_render_target) const override;
+	virtual RID render_target_get_override_depth(RID p_render_target) const override;
+	virtual RID render_target_get_override_velocity(RID p_render_target) const override;
+	virtual RID render_target_get_override_velocity_depth(RID p_render_target) const override { return RID(); }
+
+	virtual void render_target_set_render_region(RID p_render_target, const Rect2i &p_render_region) override;
+	virtual Rect2i render_target_get_render_region(RID p_render_target) const override;
+
+	virtual RID render_target_get_texture(RID p_render_target) override;
+
+	virtual void render_target_set_velocity_target_size(RID p_render_target, const Size2i &p_target_size) override {}
+	virtual Size2i render_target_get_velocity_target_size(RID p_render_target) const override { return Size2i(); }
+
+	void bind_framebuffer(GLuint framebuffer) {
+		glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+	}
+
+	void bind_framebuffer_system() {
+		glBindFramebuffer(GL_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
+	}
+
+	String get_framebuffer_error(GLenum p_status);
+};
+
+inline String TextureStorage::get_framebuffer_error(GLenum p_status) {
+#if defined(DEBUG_ENABLED) && defined(GL_API_ENABLED)
+	if (p_status == GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT) {
+		return "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT";
+	} else if (p_status == GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT) {
+		return "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT";
+	} else if (p_status == GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER) {
+		return "GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER";
+	} else if (p_status == GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER) {
+		return "GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER";
+	}
+#endif
+	return itos(p_status);
+}
+
+} // namespace GLES3
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/utilities.cpp

@@ -0,0 +1,483 @@
+/**************************************************************************/
+/*  utilities.cpp                                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifdef GLES3_ENABLED
+
+#include "utilities.h"
+
+#include "../rasterizer_gles3.h"
+#include "config.h"
+#include "light_storage.h"
+#include "material_storage.h"
+#include "mesh_storage.h"
+#include "particles_storage.h"
+#include "texture_storage.h"
+
+using namespace GLES3;
+
+Utilities *Utilities::singleton = nullptr;
+
+Utilities::Utilities() {
+	singleton = this;
+	frame = 0;
+	for (int i = 0; i < FRAME_COUNT; i++) {
+		frames[i].index = 0;
+		glGenQueries(max_timestamp_query_elements, frames[i].queries);
+
+		frames[i].timestamp_names.resize(max_timestamp_query_elements);
+		frames[i].timestamp_cpu_values.resize(max_timestamp_query_elements);
+		frames[i].timestamp_count = 0;
+
+		frames[i].timestamp_result_names.resize(max_timestamp_query_elements);
+		frames[i].timestamp_cpu_result_values.resize(max_timestamp_query_elements);
+		frames[i].timestamp_result_values.resize(max_timestamp_query_elements);
+		frames[i].timestamp_result_count = 0;
+	}
+}
+
+Utilities::~Utilities() {
+	singleton = nullptr;
+	for (int i = 0; i < FRAME_COUNT; i++) {
+		glDeleteQueries(max_timestamp_query_elements, frames[i].queries);
+	}
+
+	if (texture_mem_cache) {
+		uint32_t leaked_data_size = 0;
+		for (const KeyValue<GLuint, ResourceAllocation> &E : texture_allocs_cache) {
+#ifdef DEV_ENABLED
+			ERR_PRINT(E.value.name + ": leaked " + itos(E.value.size) + " bytes.");
+#else
+			ERR_PRINT("Texture with GL ID of " + itos(E.key) + ": leaked " + itos(E.value.size) + " bytes.");
+#endif
+			leaked_data_size += E.value.size;
+		}
+		if (leaked_data_size < texture_mem_cache) {
+			ERR_PRINT("Texture cache is not empty. There may be an additional texture leak of " + itos(texture_mem_cache - leaked_data_size) + " bytes.");
+		}
+	}
+
+	if (render_buffer_mem_cache) {
+		uint32_t leaked_data_size = 0;
+		for (const KeyValue<GLuint, ResourceAllocation> &E : render_buffer_allocs_cache) {
+#ifdef DEV_ENABLED
+			ERR_PRINT(E.value.name + ": leaked " + itos(E.value.size) + " bytes.");
+#else
+			ERR_PRINT("Render buffer with GL ID of " + itos(E.key) + ": leaked " + itos(E.value.size) + " bytes.");
+#endif
+			leaked_data_size += E.value.size;
+		}
+		if (leaked_data_size < render_buffer_mem_cache) {
+			ERR_PRINT("Render buffer cache is not empty. There may be an additional render buffer leak of " + itos(render_buffer_mem_cache - leaked_data_size) + " bytes.");
+		}
+	}
+
+	if (buffer_mem_cache) {
+		uint32_t leaked_data_size = 0;
+
+		for (const KeyValue<GLuint, ResourceAllocation> &E : buffer_allocs_cache) {
+#ifdef DEV_ENABLED
+			ERR_PRINT(E.value.name + ": leaked " + itos(E.value.size) + " bytes.");
+#else
+			ERR_PRINT("Buffer with GL ID of " + itos(E.key) + ": leaked " + itos(E.value.size) + " bytes.");
+#endif
+			leaked_data_size += E.value.size;
+		}
+		if (leaked_data_size < buffer_mem_cache) {
+			ERR_PRINT("Buffer cache is not empty. There may be an additional buffer leak of " + itos(buffer_mem_cache - leaked_data_size) + " bytes.");
+		}
+	}
+}
+
+Vector<uint8_t> Utilities::buffer_get_data(GLenum p_target, GLuint p_buffer, uint32_t p_buffer_size) {
+	Vector<uint8_t> ret;
+
+	if (p_buffer_size == 0) {
+		return ret;
+	}
+
+	ret.resize(p_buffer_size);
+	glBindBuffer(p_target, p_buffer);
+
+#if defined(__EMSCRIPTEN__)
+	{
+		uint8_t *w = ret.ptrw();
+		godot_webgl2_glGetBufferSubData(p_target, 0, p_buffer_size, w);
+	}
+#else
+	void *data = glMapBufferRange(p_target, 0, p_buffer_size, GL_MAP_READ_BIT);
+	ERR_FAIL_NULL_V(data, Vector<uint8_t>());
+	{
+		uint8_t *w = ret.ptrw();
+		memcpy(w, data, p_buffer_size);
+	}
+	glUnmapBuffer(p_target);
+#endif
+	glBindBuffer(p_target, 0);
+	return ret;
+}
+
+/* INSTANCES */
+
+RS::InstanceType Utilities::get_base_type(RID p_rid) const {
+	if (GLES3::MeshStorage::get_singleton()->owns_mesh(p_rid)) {
+		return RS::INSTANCE_MESH;
+	} else if (GLES3::MeshStorage::get_singleton()->owns_multimesh(p_rid)) {
+		return RS::INSTANCE_MULTIMESH;
+	} else if (GLES3::LightStorage::get_singleton()->owns_light(p_rid)) {
+		return RS::INSTANCE_LIGHT;
+	} else if (GLES3::LightStorage::get_singleton()->owns_lightmap(p_rid)) {
+		return RS::INSTANCE_LIGHTMAP;
+	} else if (GLES3::ParticlesStorage::get_singleton()->owns_particles(p_rid)) {
+		return RS::INSTANCE_PARTICLES;
+	} else if (GLES3::LightStorage::get_singleton()->owns_reflection_probe(p_rid)) {
+		return RS::INSTANCE_REFLECTION_PROBE;
+	} else if (GLES3::ParticlesStorage::get_singleton()->owns_particles_collision(p_rid)) {
+		return RS::INSTANCE_PARTICLES_COLLISION;
+	} else if (owns_visibility_notifier(p_rid)) {
+		return RS::INSTANCE_VISIBLITY_NOTIFIER;
+	}
+	return RS::INSTANCE_NONE;
+}
+
+bool Utilities::free(RID p_rid) {
+	if (GLES3::TextureStorage::get_singleton()->owns_render_target(p_rid)) {
+		GLES3::TextureStorage::get_singleton()->render_target_free(p_rid);
+		return true;
+	} else if (GLES3::TextureStorage::get_singleton()->owns_texture(p_rid)) {
+		GLES3::TextureStorage::get_singleton()->texture_free(p_rid);
+		return true;
+	} else if (GLES3::TextureStorage::get_singleton()->owns_canvas_texture(p_rid)) {
+		GLES3::TextureStorage::get_singleton()->canvas_texture_free(p_rid);
+		return true;
+	} else if (GLES3::MaterialStorage::get_singleton()->owns_shader(p_rid)) {
+		GLES3::MaterialStorage::get_singleton()->shader_free(p_rid);
+		return true;
+	} else if (GLES3::MaterialStorage::get_singleton()->owns_material(p_rid)) {
+		GLES3::MaterialStorage::get_singleton()->material_free(p_rid);
+		return true;
+	} else if (GLES3::MeshStorage::get_singleton()->owns_mesh(p_rid)) {
+		GLES3::MeshStorage::get_singleton()->mesh_free(p_rid);
+		return true;
+	} else if (GLES3::MeshStorage::get_singleton()->owns_multimesh(p_rid)) {
+		GLES3::MeshStorage::get_singleton()->multimesh_free(p_rid);
+		return true;
+	} else if (GLES3::MeshStorage::get_singleton()->owns_mesh_instance(p_rid)) {
+		GLES3::MeshStorage::get_singleton()->mesh_instance_free(p_rid);
+		return true;
+	} else if (GLES3::LightStorage::get_singleton()->owns_light(p_rid)) {
+		GLES3::LightStorage::get_singleton()->light_free(p_rid);
+		return true;
+	} else if (GLES3::LightStorage::get_singleton()->owns_lightmap(p_rid)) {
+		GLES3::LightStorage::get_singleton()->lightmap_free(p_rid);
+		return true;
+	} else if (GLES3::LightStorage::get_singleton()->owns_reflection_probe(p_rid)) {
+		GLES3::LightStorage::get_singleton()->reflection_probe_free(p_rid);
+		return true;
+	} else if (GLES3::LightStorage::get_singleton()->owns_reflection_atlas(p_rid)) {
+		GLES3::LightStorage::get_singleton()->reflection_atlas_free(p_rid);
+		return true;
+	} else if (GLES3::LightStorage::get_singleton()->owns_reflection_probe_instance(p_rid)) {
+		GLES3::LightStorage::get_singleton()->reflection_probe_instance_free(p_rid);
+		return true;
+	} else if (GLES3::ParticlesStorage::get_singleton()->owns_particles(p_rid)) {
+		GLES3::ParticlesStorage::get_singleton()->particles_free(p_rid);
+		return true;
+	} else if (GLES3::ParticlesStorage::get_singleton()->owns_particles_collision(p_rid)) {
+		GLES3::ParticlesStorage::get_singleton()->particles_collision_free(p_rid);
+		return true;
+	} else if (GLES3::ParticlesStorage::get_singleton()->owns_particles_collision_instance(p_rid)) {
+		GLES3::ParticlesStorage::get_singleton()->particles_collision_instance_free(p_rid);
+		return true;
+	} else if (GLES3::MeshStorage::get_singleton()->owns_skeleton(p_rid)) {
+		GLES3::MeshStorage::get_singleton()->skeleton_free(p_rid);
+		return true;
+	} else if (owns_visibility_notifier(p_rid)) {
+		visibility_notifier_free(p_rid);
+		return true;
+	} else {
+		return false;
+	}
+}
+
+/* DEPENDENCIES */
+
+void Utilities::base_update_dependency(RID p_base, DependencyTracker *p_instance) {
+	if (MeshStorage::get_singleton()->owns_mesh(p_base)) {
+		Mesh *mesh = MeshStorage::get_singleton()->get_mesh(p_base);
+		p_instance->update_dependency(&mesh->dependency);
+	} else if (MeshStorage::get_singleton()->owns_multimesh(p_base)) {
+		MultiMesh *multimesh = MeshStorage::get_singleton()->get_multimesh(p_base);
+		p_instance->update_dependency(&multimesh->dependency);
+		if (multimesh->mesh.is_valid()) {
+			base_update_dependency(multimesh->mesh, p_instance);
+		}
+	} else if (LightStorage::get_singleton()->owns_reflection_probe(p_base)) {
+		Dependency *dependency = LightStorage::get_singleton()->reflection_probe_get_dependency(p_base);
+		p_instance->update_dependency(dependency);
+	} else if (LightStorage::get_singleton()->owns_light(p_base)) {
+		Light *l = LightStorage::get_singleton()->get_light(p_base);
+		p_instance->update_dependency(&l->dependency);
+	} else if (ParticlesStorage::get_singleton()->owns_particles(p_base)) {
+		Dependency *dependency = ParticlesStorage::get_singleton()->particles_get_dependency(p_base);
+		p_instance->update_dependency(dependency);
+	} else if (ParticlesStorage::get_singleton()->owns_particles_collision(p_base)) {
+		Dependency *dependency = ParticlesStorage::get_singleton()->particles_collision_get_dependency(p_base);
+		p_instance->update_dependency(dependency);
+	} else if (owns_visibility_notifier(p_base)) {
+		VisibilityNotifier *vn = get_visibility_notifier(p_base);
+		p_instance->update_dependency(&vn->dependency);
+	}
+}
+
+/* VISIBILITY NOTIFIER */
+
+RID Utilities::visibility_notifier_allocate() {
+	return visibility_notifier_owner.allocate_rid();
+}
+
+void Utilities::visibility_notifier_initialize(RID p_notifier) {
+	visibility_notifier_owner.initialize_rid(p_notifier, VisibilityNotifier());
+}
+
+void Utilities::visibility_notifier_free(RID p_notifier) {
+	VisibilityNotifier *vn = visibility_notifier_owner.get_or_null(p_notifier);
+	vn->dependency.deleted_notify(p_notifier);
+	visibility_notifier_owner.free(p_notifier);
+}
+
+void Utilities::visibility_notifier_set_aabb(RID p_notifier, const AABB &p_aabb) {
+	VisibilityNotifier *vn = visibility_notifier_owner.get_or_null(p_notifier);
+	ERR_FAIL_NULL(vn);
+	vn->aabb = p_aabb;
+	vn->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_AABB);
+}
+
+void Utilities::visibility_notifier_set_callbacks(RID p_notifier, const Callable &p_enter_callbable, const Callable &p_exit_callable) {
+	VisibilityNotifier *vn = visibility_notifier_owner.get_or_null(p_notifier);
+	ERR_FAIL_NULL(vn);
+	vn->enter_callback = p_enter_callbable;
+	vn->exit_callback = p_exit_callable;
+}
+
+AABB Utilities::visibility_notifier_get_aabb(RID p_notifier) const {
+	const VisibilityNotifier *vn = visibility_notifier_owner.get_or_null(p_notifier);
+	ERR_FAIL_NULL_V(vn, AABB());
+	return vn->aabb;
+}
+
+void Utilities::visibility_notifier_call(RID p_notifier, bool p_enter, bool p_deferred) {
+	VisibilityNotifier *vn = visibility_notifier_owner.get_or_null(p_notifier);
+	ERR_FAIL_NULL(vn);
+
+	if (p_enter) {
+		if (vn->enter_callback.is_valid()) {
+			if (p_deferred) {
+				vn->enter_callback.call_deferred();
+			} else {
+				vn->enter_callback.call();
+			}
+		}
+	} else {
+		if (vn->exit_callback.is_valid()) {
+			if (p_deferred) {
+				vn->exit_callback.call_deferred();
+			} else {
+				vn->exit_callback.call();
+			}
+		}
+	}
+}
+
+/* TIMING */
+
+void Utilities::capture_timestamps_begin() {
+	capture_timestamp("Frame Begin");
+}
+
+void Utilities::capture_timestamp(const String &p_name) {
+	ERR_FAIL_COND(frames[frame].timestamp_count >= max_timestamp_query_elements);
+
+#ifdef GL_API_ENABLED
+	if (RasterizerGLES3::is_gles_over_gl()) {
+		glQueryCounter(frames[frame].queries[frames[frame].timestamp_count], GL_TIMESTAMP);
+	}
+#endif // GL_API_ENABLED
+
+	frames[frame].timestamp_names[frames[frame].timestamp_count] = p_name;
+	frames[frame].timestamp_cpu_values[frames[frame].timestamp_count] = OS::get_singleton()->get_ticks_usec();
+	frames[frame].timestamp_count++;
+}
+
+void Utilities::_capture_timestamps_begin() {
+	// frame is incremented at the end of the frame so this gives us the queries for frame - 2. By then they should be ready.
+	if (frames[frame].timestamp_count) {
+#ifdef GL_API_ENABLED
+		if (RasterizerGLES3::is_gles_over_gl()) {
+			for (uint32_t i = 0; i < frames[frame].timestamp_count; i++) {
+				uint64_t temp = 0;
+				glGetQueryObjectui64v(frames[frame].queries[i], GL_QUERY_RESULT, &temp);
+				frames[frame].timestamp_result_values[i] = temp;
+			}
+		}
+#endif // GL_API_ENABLED
+		SWAP(frames[frame].timestamp_names, frames[frame].timestamp_result_names);
+		SWAP(frames[frame].timestamp_cpu_values, frames[frame].timestamp_cpu_result_values);
+	}
+
+	frames[frame].timestamp_result_count = frames[frame].timestamp_count;
+	frames[frame].timestamp_count = 0;
+	frames[frame].index = Engine::get_singleton()->get_frames_drawn();
+	capture_timestamp("Internal Begin");
+}
+
+void Utilities::capture_timestamps_end() {
+	capture_timestamp("Internal End");
+	frame = (frame + 1) % FRAME_COUNT;
+}
+
+uint32_t Utilities::get_captured_timestamps_count() const {
+	return frames[frame].timestamp_result_count;
+}
+
+uint64_t Utilities::get_captured_timestamps_frame() const {
+	return frames[frame].index;
+}
+
+uint64_t Utilities::get_captured_timestamp_gpu_time(uint32_t p_index) const {
+	ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, 0);
+	return frames[frame].timestamp_result_values[p_index];
+}
+
+uint64_t Utilities::get_captured_timestamp_cpu_time(uint32_t p_index) const {
+	ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, 0);
+	return frames[frame].timestamp_cpu_result_values[p_index];
+}
+
+String Utilities::get_captured_timestamp_name(uint32_t p_index) const {
+	ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, String());
+	return frames[frame].timestamp_result_names[p_index];
+}
+
+/* MISC */
+
+void Utilities::update_dirty_resources() {
+	MaterialStorage::get_singleton()->_update_global_shader_uniforms();
+	MaterialStorage::get_singleton()->_update_queued_materials();
+	MeshStorage::get_singleton()->_update_dirty_skeletons();
+	MeshStorage::get_singleton()->_update_dirty_multimeshes();
+	TextureStorage::get_singleton()->update_texture_atlas();
+}
+
+void Utilities::set_debug_generate_wireframes(bool p_generate) {
+	Config *config = Config::get_singleton();
+	config->generate_wireframes = p_generate;
+}
+
+bool Utilities::has_os_feature(const String &p_feature) const {
+	Config *config = Config::get_singleton();
+	if (!config) {
+		return false;
+	}
+
+	if (p_feature == "rgtc") {
+		return config->rgtc_supported;
+	}
+	if (p_feature == "s3tc") {
+		return config->s3tc_supported;
+	}
+	if (p_feature == "bptc") {
+		return config->bptc_supported;
+	}
+	if (p_feature == "astc") {
+		return config->astc_supported;
+	}
+	if (p_feature == "etc2") {
+		return config->etc2_supported;
+	}
+	if (p_feature == "astc_hdr") {
+		return config->astc_hdr_supported;
+	}
+
+	return false;
+}
+
+void Utilities::update_memory_info() {
+}
+
+uint64_t Utilities::get_rendering_info(RS::RenderingInfo p_info) {
+	if (p_info == RS::RENDERING_INFO_TEXTURE_MEM_USED) {
+		return texture_mem_cache + render_buffer_mem_cache; // Add render buffer memory to our texture mem.
+	} else if (p_info == RS::RENDERING_INFO_BUFFER_MEM_USED) {
+		return buffer_mem_cache;
+	} else if (p_info == RS::RENDERING_INFO_VIDEO_MEM_USED) {
+		return texture_mem_cache + buffer_mem_cache + render_buffer_mem_cache;
+	}
+	return 0;
+}
+
+String Utilities::get_video_adapter_name() const {
+	const String rendering_device_name = String::utf8((const char *)glGetString(GL_RENDERER));
+	// NVIDIA suffixes all GPU model names with "/PCIe/SSE2" in OpenGL (but not Vulkan). This isn't necessary to display nowadays, so it can be trimmed.
+	return rendering_device_name.trim_suffix("/PCIe/SSE2");
+}
+
+String Utilities::get_video_adapter_vendor() const {
+	const String rendering_device_vendor = String::utf8((const char *)glGetString(GL_VENDOR));
+	// NVIDIA suffixes its vendor name with " Corporation". This is neither necessary to process nor display.
+	return rendering_device_vendor.trim_suffix(" Corporation");
+}
+
+RenderingDevice::DeviceType Utilities::get_video_adapter_type() const {
+	return RenderingDevice::DeviceType::DEVICE_TYPE_OTHER;
+}
+
+String Utilities::get_video_adapter_api_version() const {
+	return String::utf8((const char *)glGetString(GL_VERSION));
+}
+
+Size2i Utilities::get_maximum_viewport_size() const {
+	Config *config = Config::get_singleton();
+	ERR_FAIL_NULL_V(config, Size2i());
+	return Size2i(config->max_viewport_size[0], config->max_viewport_size[1]);
+}
+
+uint32_t Utilities::get_maximum_shader_varyings() const {
+	Config *config = Config::get_singleton();
+	ERR_FAIL_NULL_V(config, 31);
+	return config->max_shader_varyings;
+}
+
+uint64_t Utilities::get_maximum_uniform_buffer_size() const {
+	Config *config = Config::get_singleton();
+	ERR_FAIL_NULL_V(config, 65536);
+	return uint64_t(config->max_uniform_buffer_size);
+}
+
+#endif // GLES3_ENABLED

drivers/gles3/storage/utilities.h

@@ -0,0 +1,234 @@
+/**************************************************************************/
+/*  utilities.h                                                           */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#pragma once
+
+#ifdef GLES3_ENABLED
+
+#include "servers/rendering/storage/utilities.h"
+
+#include "platform_gl.h"
+
+namespace GLES3 {
+
+/* VISIBILITY NOTIFIER */
+
+struct VisibilityNotifier {
+	AABB aabb;
+	Callable enter_callback;
+	Callable exit_callback;
+	Dependency dependency;
+};
+
+class Utilities : public RendererUtilities {
+private:
+	static Utilities *singleton;
+
+	/* VISIBILITY NOTIFIER */
+
+	mutable RID_Owner<VisibilityNotifier> visibility_notifier_owner;
+
+	/* MISC */
+
+	struct ResourceAllocation {
+#ifdef DEV_ENABLED
+		String name;
+#endif
+		uint32_t size = 0;
+	};
+	HashMap<GLuint, ResourceAllocation> buffer_allocs_cache;
+	HashMap<GLuint, ResourceAllocation> render_buffer_allocs_cache;
+	HashMap<GLuint, ResourceAllocation> texture_allocs_cache;
+
+	uint64_t buffer_mem_cache = 0;
+	uint64_t render_buffer_mem_cache = 0;
+	uint64_t texture_mem_cache = 0;
+
+public:
+	static Utilities *get_singleton() { return singleton; }
+
+	Utilities();
+	~Utilities();
+
+	// Buffer size is specified in bytes
+	static Vector<uint8_t> buffer_get_data(GLenum p_target, GLuint p_buffer, uint32_t p_buffer_size);
+
+	// Allocate memory with glBufferData. Does not handle resizing.
+	_FORCE_INLINE_ void buffer_allocate_data(GLenum p_target, GLuint p_id, uint32_t p_size, const void *p_data, GLenum p_usage, String p_name = "") {
+		glBufferData(p_target, p_size, p_data, p_usage);
+		buffer_mem_cache += p_size;
+
+#ifdef DEV_ENABLED
+		ERR_FAIL_COND_MSG(buffer_allocs_cache.has(p_id), "trying to allocate buffer with name " + p_name + " but ID already used by " + buffer_allocs_cache[p_id].name);
+#endif
+
+		ResourceAllocation resource_allocation;
+		resource_allocation.size = p_size;
+#ifdef DEV_ENABLED
+		resource_allocation.name = p_name + ": " + itos((uint64_t)p_id);
+#endif
+		buffer_allocs_cache[p_id] = resource_allocation;
+	}
+
+	_FORCE_INLINE_ void buffer_free_data(GLuint p_id) {
+		ERR_FAIL_COND(!buffer_allocs_cache.has(p_id));
+		glDeleteBuffers(1, &p_id);
+		buffer_mem_cache -= buffer_allocs_cache[p_id].size;
+		buffer_allocs_cache.erase(p_id);
+	}
+
+	_FORCE_INLINE_ void render_buffer_allocated_data(GLuint p_id, uint32_t p_size, String p_name = "") {
+		render_buffer_mem_cache += p_size;
+#ifdef DEV_ENABLED
+		ERR_FAIL_COND_MSG(render_buffer_allocs_cache.has(p_id), "trying to allocate render buffer with name " + p_name + " but ID already used by " + render_buffer_allocs_cache[p_id].name);
+#endif
+		ResourceAllocation resource_allocation;
+		resource_allocation.size = p_size;
+#ifdef DEV_ENABLED
+		resource_allocation.name = p_name + ": " + itos((uint64_t)p_id);
+#endif
+		render_buffer_allocs_cache[p_id] = resource_allocation;
+	}
+
+	_FORCE_INLINE_ void render_buffer_free_data(GLuint p_id) {
+		ERR_FAIL_COND(!render_buffer_allocs_cache.has(p_id));
+		glDeleteRenderbuffers(1, &p_id);
+		render_buffer_mem_cache -= render_buffer_allocs_cache[p_id].size;
+		render_buffer_allocs_cache.erase(p_id);
+	}
+
+	// Records that data was allocated for state tracking purposes.
+	// Size is measured in bytes.
+	_FORCE_INLINE_ void texture_allocated_data(GLuint p_id, uint32_t p_size, String p_name = "") {
+		texture_mem_cache += p_size;
+#ifdef DEV_ENABLED
+		ERR_FAIL_COND_MSG(texture_allocs_cache.has(p_id), "trying to allocate texture with name " + p_name + " but ID already used by " + texture_allocs_cache[p_id].name);
+#endif
+		ResourceAllocation resource_allocation;
+		resource_allocation.size = p_size;
+#ifdef DEV_ENABLED
+		resource_allocation.name = p_name + ": " + itos((uint64_t)p_id);
+#endif
+		texture_allocs_cache[p_id] = resource_allocation;
+	}
+
+	_FORCE_INLINE_ void texture_free_data(GLuint p_id) {
+		ERR_FAIL_COND(!texture_allocs_cache.has(p_id));
+		glDeleteTextures(1, &p_id);
+		texture_mem_cache -= texture_allocs_cache[p_id].size;
+		texture_allocs_cache.erase(p_id);
+	}
+
+	_FORCE_INLINE_ void texture_resize_data(GLuint p_id, uint32_t p_size) {
+		ERR_FAIL_COND(!texture_allocs_cache.has(p_id));
+		texture_mem_cache -= texture_allocs_cache[p_id].size;
+		texture_mem_cache += p_size;
+		texture_allocs_cache[p_id].size = p_size;
+	}
+
+	/* INSTANCES */
+
+	virtual RS::InstanceType get_base_type(RID p_rid) const override;
+	virtual bool free(RID p_rid) override;
+
+	/* DEPENDENCIES */
+
+	virtual void base_update_dependency(RID p_base, DependencyTracker *p_instance) override;
+
+	/* VISIBILITY NOTIFIER */
+
+	VisibilityNotifier *get_visibility_notifier(RID p_rid) { return visibility_notifier_owner.get_or_null(p_rid); }
+	bool owns_visibility_notifier(RID p_rid) const { return visibility_notifier_owner.owns(p_rid); }
+
+	virtual RID visibility_notifier_allocate() override;
+	virtual void visibility_notifier_initialize(RID p_notifier) override;
+	virtual void visibility_notifier_free(RID p_notifier) override;
+
+	virtual void visibility_notifier_set_aabb(RID p_notifier, const AABB &p_aabb) override;
+	virtual void visibility_notifier_set_callbacks(RID p_notifier, const Callable &p_enter_callbable, const Callable &p_exit_callable) override;
+
+	virtual AABB visibility_notifier_get_aabb(RID p_notifier) const override;
+	virtual void visibility_notifier_call(RID p_notifier, bool p_enter, bool p_deferred) override;
+
+	/* TIMING */
+
+#define MAX_QUERIES 256
+#define FRAME_COUNT 3
+
+	struct Frame {
+		GLuint queries[MAX_QUERIES];
+		TightLocalVector<String> timestamp_names;
+		TightLocalVector<uint64_t> timestamp_cpu_values;
+		uint32_t timestamp_count = 0;
+		TightLocalVector<String> timestamp_result_names;
+		TightLocalVector<uint64_t> timestamp_cpu_result_values;
+		TightLocalVector<uint64_t> timestamp_result_values;
+		uint32_t timestamp_result_count = 0;
+		uint64_t index = 0;
+	};
+
+	const uint32_t max_timestamp_query_elements = MAX_QUERIES;
+
+	Frame frames[FRAME_COUNT]; // Frames for capturing timestamps. We use 3 so we don't need to wait for commands to complete
+	uint32_t frame = 0;
+
+	virtual void capture_timestamps_begin() override;
+	virtual void capture_timestamp(const String &p_name) override;
+	virtual uint32_t get_captured_timestamps_count() const override;
+	virtual uint64_t get_captured_timestamps_frame() const override;
+	virtual uint64_t get_captured_timestamp_gpu_time(uint32_t p_index) const override;
+	virtual uint64_t get_captured_timestamp_cpu_time(uint32_t p_index) const override;
+	virtual String get_captured_timestamp_name(uint32_t p_index) const override;
+	void _capture_timestamps_begin();
+	void capture_timestamps_end();
+
+	/* MISC */
+
+	virtual void update_dirty_resources() override;
+	virtual void set_debug_generate_wireframes(bool p_generate) override;
+
+	virtual bool has_os_feature(const String &p_feature) const override;
+
+	virtual void update_memory_info() override;
+
+	virtual uint64_t get_rendering_info(RS::RenderingInfo p_info) override;
+	virtual String get_video_adapter_name() const override;
+	virtual String get_video_adapter_vendor() const override;
+	virtual RenderingDevice::DeviceType get_video_adapter_type() const override;
+	virtual String get_video_adapter_api_version() const override;
+
+	virtual Size2i get_maximum_viewport_size() const override;
+	virtual uint32_t get_maximum_shader_varyings() const override;
+	virtual uint64_t get_maximum_uniform_buffer_size() const override;
+};
+
+} // namespace GLES3
+
+#endif // GLES3_ENABLED