initial commit, 4.5 stable

servers/rendering/renderer_rd/environment/SCsub

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

servers/rendering/renderer_rd/environment/fog.h

@@ -0,0 +1,371 @@
+/**************************************************************************/
+/*  fog.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
+
+#include "core/templates/local_vector.h"
+#include "core/templates/rid_owner.h"
+#include "servers/rendering/environment/renderer_fog.h"
+#include "servers/rendering/renderer_rd/cluster_builder_rd.h"
+#include "servers/rendering/renderer_rd/environment/gi.h"
+#include "servers/rendering/renderer_rd/shaders/environment/volumetric_fog.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/volumetric_fog_process.glsl.gen.h"
+#include "servers/rendering/renderer_rd/storage_rd/render_buffer_custom_data_rd.h"
+#include "servers/rendering/storage/utilities.h"
+
+#define RB_SCOPE_FOG SNAME("Fog")
+
+namespace RendererRD {
+
+class Fog : public RendererFog {
+private:
+	static Fog *singleton;
+
+	static int _get_fog_shader_group();
+	static int _get_fog_variant();
+	static int _get_fog_process_variant(int p_idx);
+
+	/* FOG VOLUMES */
+
+	struct FogVolume {
+		RID material;
+		Vector3 size = Vector3(2, 2, 2);
+
+		RS::FogVolumeShape shape = RS::FOG_VOLUME_SHAPE_BOX;
+
+		Dependency dependency;
+	};
+
+	mutable RID_Owner<FogVolume, true> fog_volume_owner;
+
+	struct FogVolumeInstance {
+		RID volume;
+		Transform3D transform;
+		bool active = false;
+	};
+
+	mutable RID_Owner<FogVolumeInstance> fog_volume_instance_owner;
+
+	const int SAMPLERS_BINDING_FIRST_INDEX = 3;
+
+	/* Volumetric Fog */
+	struct VolumetricFogShader {
+		enum ShaderGroup {
+			SHADER_GROUP_BASE,
+			SHADER_GROUP_NO_ATOMICS,
+			SHADER_GROUP_VULKAN_MEMORY_MODEL,
+			SHADER_GROUP_VULKAN_MEMORY_MODEL_NO_ATOMICS,
+		};
+
+		enum FogSet {
+			FOG_SET_BASE,
+			FOG_SET_UNIFORMS,
+			FOG_SET_MATERIAL,
+			FOG_SET_MAX,
+		};
+
+		struct FogPushConstant {
+			float position[3];
+			float pad;
+
+			float size[3];
+			float pad2;
+
+			int32_t corner[3];
+			uint32_t shape;
+
+			float transform[16];
+		};
+
+		struct VolumeUBO {
+			float fog_frustum_size_begin[2];
+			float fog_frustum_size_end[2];
+
+			float fog_frustum_end;
+			float z_near;
+			float z_far;
+			float time;
+
+			int32_t fog_volume_size[3];
+			uint32_t directional_light_count;
+
+			uint32_t use_temporal_reprojection;
+			uint32_t temporal_frame;
+			float detail_spread;
+			float temporal_blend;
+
+			float to_prev_view[16];
+			float transform[16];
+		};
+
+		ShaderCompiler compiler;
+		VolumetricFogShaderRD shader;
+		RID volume_ubo;
+
+		RID default_shader;
+		RID default_material;
+		RID default_shader_rd;
+
+		RID base_uniform_set;
+
+		RID params_ubo;
+
+		enum {
+			VOLUMETRIC_FOG_PROCESS_SHADER_DENSITY,
+			VOLUMETRIC_FOG_PROCESS_SHADER_DENSITY_WITH_SDFGI,
+			VOLUMETRIC_FOG_PROCESS_SHADER_FILTER,
+			VOLUMETRIC_FOG_PROCESS_SHADER_FOG,
+			VOLUMETRIC_FOG_PROCESS_SHADER_COPY,
+			VOLUMETRIC_FOG_PROCESS_SHADER_MAX,
+		};
+
+		struct ParamsUBO {
+			float fog_frustum_size_begin[2];
+			float fog_frustum_size_end[2];
+
+			float fog_frustum_end;
+			float ambient_inject;
+			float z_far;
+			uint32_t filter_axis;
+
+			float ambient_color[3];
+			float sky_contribution;
+
+			int32_t fog_volume_size[3];
+			uint32_t directional_light_count;
+
+			float base_emission[3];
+			float base_density;
+
+			float base_scattering[3];
+			float phase_g;
+
+			float detail_spread;
+			float gi_inject;
+			uint32_t max_voxel_gi_instances;
+			uint32_t cluster_type_size;
+
+			float screen_size[2];
+			uint32_t cluster_shift;
+			uint32_t cluster_width;
+
+			uint32_t max_cluster_element_count_div_32;
+			uint32_t use_temporal_reprojection;
+			uint32_t temporal_frame;
+			float temporal_blend;
+
+			float cam_rotation[12];
+			float to_prev_view[16];
+			float radiance_inverse_xform[12];
+		};
+
+		VolumetricFogProcessShaderRD process_shader;
+
+		RID process_shader_version;
+		RID process_pipelines[VOLUMETRIC_FOG_PROCESS_SHADER_MAX];
+
+	} volumetric_fog;
+
+	Vector3i _point_get_position_in_froxel_volume(const Vector3 &p_point, float fog_end, const Vector2 &fog_near_size, const Vector2 &fog_far_size, float volumetric_fog_detail_spread, const Vector3 &fog_size, const Transform3D &p_cam_transform);
+
+	struct FogShaderData : public RendererRD::MaterialStorage::ShaderData {
+		bool valid = false;
+		RID version;
+
+		RID pipeline;
+		Vector<ShaderCompiler::GeneratedCode::Texture> texture_uniforms;
+
+		Vector<uint32_t> ubo_offsets;
+		uint32_t ubo_size = 0;
+
+		String code;
+
+		bool uses_time = false;
+
+		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;
+		virtual Pair<ShaderRD *, RID> get_native_shader_and_version() const;
+
+		FogShaderData() {}
+		virtual ~FogShaderData();
+	};
+
+	struct FogMaterialData : public RendererRD::MaterialStorage::MaterialData {
+		FogShaderData *shader_data = nullptr;
+		RID uniform_set;
+		bool uniform_set_updated;
+
+		virtual void set_render_priority(int p_priority) {}
+		virtual void set_next_pass(RID p_pass) {}
+		virtual bool update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
+		virtual ~FogMaterialData();
+	};
+
+	RendererRD::MaterialStorage::ShaderData *_create_fog_shader_func();
+	static RendererRD::MaterialStorage::ShaderData *_create_fog_shader_funcs();
+
+	RendererRD::MaterialStorage::MaterialData *_create_fog_material_func(FogShaderData *p_shader);
+	static RendererRD::MaterialStorage::MaterialData *_create_fog_material_funcs(RendererRD::MaterialStorage::ShaderData *p_shader);
+
+public:
+	static Fog *get_singleton() { return singleton; }
+
+	Fog();
+	~Fog();
+
+	/* FOG VOLUMES */
+
+	bool owns_fog_volume(RID p_rid) { return fog_volume_owner.owns(p_rid); }
+
+	virtual RID fog_volume_allocate() override;
+	virtual void fog_volume_initialize(RID p_rid) override;
+	virtual void fog_volume_free(RID p_rid) override;
+	Dependency *fog_volume_get_dependency(RID p_fog_volume) const;
+
+	virtual void fog_volume_set_shape(RID p_fog_volume, RS::FogVolumeShape p_shape) override;
+	virtual void fog_volume_set_size(RID p_fog_volume, const Vector3 &p_size) override;
+	virtual void fog_volume_set_material(RID p_fog_volume, RID p_material) override;
+	virtual RS::FogVolumeShape fog_volume_get_shape(RID p_fog_volume) const override;
+	RID fog_volume_get_material(RID p_fog_volume) const;
+	virtual AABB fog_volume_get_aabb(RID p_fog_volume) const override;
+	Vector3 fog_volume_get_size(RID p_fog_volume) const;
+
+	/* FOG VOLUMES INSTANCE */
+
+	bool owns_fog_volume_instance(RID p_rid) { return fog_volume_instance_owner.owns(p_rid); }
+
+	RID fog_volume_instance_create(RID p_fog_volume);
+	void fog_instance_free(RID p_rid);
+
+	void fog_volume_instance_set_transform(RID p_fog_volume_instance, const Transform3D &p_transform) {
+		Fog::FogVolumeInstance *fvi = fog_volume_instance_owner.get_or_null(p_fog_volume_instance);
+		ERR_FAIL_NULL(fvi);
+		fvi->transform = p_transform;
+	}
+
+	void fog_volume_instance_set_active(RID p_fog_volume_instance, bool p_active) {
+		Fog::FogVolumeInstance *fvi = fog_volume_instance_owner.get_or_null(p_fog_volume_instance);
+		ERR_FAIL_NULL(fvi);
+		fvi->active = p_active;
+	}
+
+	RID fog_volume_instance_get_volume(RID p_fog_volume_instance) const {
+		Fog::FogVolumeInstance *fvi = fog_volume_instance_owner.get_or_null(p_fog_volume_instance);
+		ERR_FAIL_NULL_V(fvi, RID());
+		return fvi->volume;
+	}
+
+	Vector3 fog_volume_instance_get_position(RID p_fog_volume_instance) const {
+		Fog::FogVolumeInstance *fvi = fog_volume_instance_owner.get_or_null(p_fog_volume_instance);
+		ERR_FAIL_NULL_V(fvi, Vector3());
+		return fvi->transform.get_origin();
+	}
+
+	/* Volumetric FOG */
+	class VolumetricFog : public RenderBufferCustomDataRD {
+		GDCLASS(VolumetricFog, RenderBufferCustomDataRD)
+
+	public:
+		enum {
+			MAX_TEMPORAL_FRAMES = 16
+		};
+
+		uint32_t width = 0;
+		uint32_t height = 0;
+		uint32_t depth = 0;
+
+		float length;
+		float spread;
+
+		RID light_density_map;
+		RID prev_light_density_map;
+		RID fog_map;
+		RID density_map;
+		RID light_map;
+		RID emissive_map;
+
+		RID fog_uniform_set;
+		RID copy_uniform_set;
+
+		struct {
+			RID process_uniform_set_density;
+			RID process_uniform_set;
+			RID process_uniform_set2;
+		} gi_dependent_sets;
+
+		RID sdfgi_uniform_set;
+		RID sky_uniform_set;
+
+		int last_shadow_filter = -1;
+
+		// If the device doesn't support image atomics, use storage buffers instead.
+		RD::UniformType atomic_type = RD::UNIFORM_TYPE_IMAGE;
+
+		virtual void configure(RenderSceneBuffersRD *p_render_buffers) override {}
+		virtual void free_data() override {}
+
+		bool sync_gi_dependent_sets_validity(bool p_ensure_freed = false);
+
+		void init(const Vector3i &fog_size, RID p_sky_shader);
+		~VolumetricFog();
+	};
+
+	void init_fog_shader(uint32_t p_max_directional_lights, int p_roughness_layers, bool p_is_using_radiance_cubemap_array);
+	void free_fog_shader();
+
+	struct VolumetricFogSettings {
+		Vector2i rb_size;
+		double time;
+		bool is_using_radiance_cubemap_array;
+		uint32_t max_cluster_elements;
+		bool volumetric_fog_filter_active;
+		RID shadow_sampler;
+		RID voxel_gi_buffer;
+		RID shadow_atlas_depth;
+		RID omni_light_buffer;
+		RID spot_light_buffer;
+		RID directional_shadow_depth;
+		RID directional_light_buffer;
+
+		// Objects related to our render buffer
+		Ref<VolumetricFog> vfog;
+		ClusterBuilderRD *cluster_builder;
+		GI *gi;
+		Ref<GI::SDFGI> sdfgi;
+		Ref<GI::RenderBuffersGI> rbgi;
+		RID env;
+		SkyRD *sky;
+	};
+	void volumetric_fog_update(const VolumetricFogSettings &p_settings, const Projection &p_cam_projection, const Transform3D &p_cam_transform, const Transform3D &p_prev_cam_inv_transform, RID p_shadow_atlas, int p_directional_light_count, bool p_use_directional_shadows, int p_positional_light_count, int p_voxel_gi_count, const PagedArray<RID> &p_fog_volumes);
+};
+
+} // namespace RendererRD

servers/rendering/renderer_rd/environment/gi.h

@@ -0,0 +1,840 @@
+/**************************************************************************/
+/*  gi.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
+
+#include "core/templates/local_vector.h"
+#include "core/templates/rid_owner.h"
+#include "servers/rendering/environment/renderer_gi.h"
+#include "servers/rendering/renderer_compositor.h"
+#include "servers/rendering/renderer_rd/environment/sky.h"
+#include "servers/rendering/renderer_rd/shaders/environment/gi.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/sdfgi_debug.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/sdfgi_debug_probes.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/sdfgi_direct_light.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/sdfgi_integrate.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/sdfgi_preprocess.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/voxel_gi.glsl.gen.h"
+#include "servers/rendering/renderer_rd/shaders/environment/voxel_gi_debug.glsl.gen.h"
+#include "servers/rendering/renderer_rd/storage_rd/render_buffer_custom_data_rd.h"
+#include "servers/rendering/renderer_scene_render.h"
+#include "servers/rendering/rendering_device.h"
+#include "servers/rendering/storage/utilities.h"
+
+#define RB_SCOPE_GI SNAME("rbgi")
+#define RB_SCOPE_SDFGI SNAME("sdfgi")
+
+#define RB_TEX_AMBIENT SNAME("ambient")
+#define RB_TEX_REFLECTION SNAME("reflection")
+
+// Forward declare RenderDataRD and RendererSceneRenderRD so we can pass it into some of our methods, these classes are pretty tightly bound
+class RenderDataRD;
+class RendererSceneRenderRD;
+
+namespace RendererRD {
+
+class GI : public RendererGI {
+public:
+	/* VOXEL GI STORAGE */
+
+	struct VoxelGI {
+		RID octree_buffer;
+		RID data_buffer;
+		RID sdf_texture;
+
+		uint32_t octree_buffer_size = 0;
+		uint32_t data_buffer_size = 0;
+
+		Vector<int> level_counts;
+
+		int cell_count = 0;
+
+		Transform3D to_cell_xform;
+		AABB bounds;
+		Vector3i octree_size;
+
+		float dynamic_range = 2.0;
+		float energy = 1.0;
+		float baked_exposure = 1.0;
+		float bias = 1.4;
+		float normal_bias = 0.0;
+		float propagation = 0.5;
+		bool interior = false;
+		bool use_two_bounces = true;
+
+		uint32_t version = 1;
+		uint32_t data_version = 1;
+
+		Dependency dependency;
+	};
+
+	/* VOXEL_GI INSTANCE */
+
+	//@TODO VoxelGIInstance is still directly used in the render code, we'll address this when we refactor the render code itself.
+
+	struct VoxelGIInstance {
+		// access to our containers
+		GI *gi = nullptr;
+
+		RID probe;
+		RID texture;
+		RID write_buffer;
+
+		struct Mipmap {
+			RID texture;
+			RID uniform_set;
+			RID second_bounce_uniform_set;
+			RID write_uniform_set;
+			uint32_t level;
+			uint32_t cell_offset;
+			uint32_t cell_count;
+		};
+		Vector<Mipmap> mipmaps;
+
+		struct DynamicMap {
+			RID texture; //color normally, or emission on first pass
+			RID fb_depth; //actual depth buffer for the first pass, float depth for later passes
+			RID depth; //actual depth buffer for the first pass, float depth for later passes
+			RID normal; //normal buffer for the first pass
+			RID albedo; //emission buffer for the first pass
+			RID orm; //orm buffer for the first pass
+			RID fb; //used for rendering, only valid on first map
+			RID uniform_set;
+			uint32_t size;
+			int mipmap; // mipmap to write to, -1 if no mipmap assigned
+		};
+
+		Vector<DynamicMap> dynamic_maps;
+
+		int slot = -1;
+		uint32_t last_probe_version = 0;
+		uint32_t last_probe_data_version = 0;
+
+		//uint64_t last_pass = 0;
+		uint32_t render_index = 0;
+
+		bool has_dynamic_object_data = false;
+
+		Transform3D transform;
+
+		void update(bool p_update_light_instances, const Vector<RID> &p_light_instances, const PagedArray<RenderGeometryInstance *> &p_dynamic_objects);
+		void debug(RD::DrawListID p_draw_list, RID p_framebuffer, const Projection &p_camera_with_transform, bool p_lighting, bool p_emission, float p_alpha);
+		void free_resources();
+	};
+
+private:
+	static GI *singleton;
+
+	/* VOXEL GI STORAGE */
+
+	mutable RID_Owner<VoxelGI, true> voxel_gi_owner;
+
+	/* VOXEL_GI INSTANCE */
+
+	mutable RID_Owner<VoxelGIInstance> voxel_gi_instance_owner;
+
+	struct VoxelGILight {
+		uint32_t type;
+		float energy;
+		float radius;
+		float attenuation;
+
+		float color[3];
+		float cos_spot_angle;
+
+		float position[3];
+		float inv_spot_attenuation;
+
+		float direction[3];
+		uint32_t has_shadow;
+	};
+
+	struct VoxelGIPushConstant {
+		int32_t limits[3];
+		uint32_t stack_size;
+
+		float emission_scale;
+		float propagation;
+		float dynamic_range;
+		uint32_t light_count;
+
+		uint32_t cell_offset;
+		uint32_t cell_count;
+		float aniso_strength;
+		float cell_size;
+	};
+
+	struct VoxelGIDynamicPushConstant {
+		int32_t limits[3];
+		uint32_t light_count;
+		int32_t x_dir[3];
+		float z_base;
+		int32_t y_dir[3];
+		float z_sign;
+		int32_t z_dir[3];
+		float pos_multiplier;
+		uint32_t rect_pos[2];
+		uint32_t rect_size[2];
+		uint32_t prev_rect_ofs[2];
+		uint32_t prev_rect_size[2];
+		uint32_t flip_x;
+		uint32_t flip_y;
+		float dynamic_range;
+		uint32_t on_mipmap;
+		float propagation;
+		float cell_size;
+		float pad[2];
+	};
+
+	VoxelGILight *voxel_gi_lights = nullptr;
+	uint32_t voxel_gi_max_lights = 32;
+	RID voxel_gi_lights_uniform;
+
+	enum {
+		VOXEL_GI_SHADER_VERSION_COMPUTE_LIGHT,
+		VOXEL_GI_SHADER_VERSION_COMPUTE_SECOND_BOUNCE,
+		VOXEL_GI_SHADER_VERSION_COMPUTE_MIPMAP,
+		VOXEL_GI_SHADER_VERSION_WRITE_TEXTURE,
+		VOXEL_GI_SHADER_VERSION_DYNAMIC_OBJECT_LIGHTING,
+		VOXEL_GI_SHADER_VERSION_DYNAMIC_SHRINK_WRITE,
+		VOXEL_GI_SHADER_VERSION_DYNAMIC_SHRINK_PLOT,
+		VOXEL_GI_SHADER_VERSION_DYNAMIC_SHRINK_WRITE_PLOT,
+		VOXEL_GI_SHADER_VERSION_MAX
+	};
+
+	VoxelGiShaderRD voxel_gi_shader;
+	RID voxel_gi_lighting_shader_version;
+	RID voxel_gi_lighting_shader_version_shaders[VOXEL_GI_SHADER_VERSION_MAX];
+	RID voxel_gi_lighting_shader_version_pipelines[VOXEL_GI_SHADER_VERSION_MAX];
+
+	enum {
+		VOXEL_GI_DEBUG_COLOR,
+		VOXEL_GI_DEBUG_LIGHT,
+		VOXEL_GI_DEBUG_EMISSION,
+		VOXEL_GI_DEBUG_LIGHT_FULL,
+		VOXEL_GI_DEBUG_MAX
+	};
+
+	struct VoxelGIDebugPushConstant {
+		float projection[16];
+		uint32_t cell_offset;
+		float dynamic_range;
+		float alpha;
+		uint32_t level;
+		int32_t bounds[3];
+		uint32_t pad;
+	};
+
+	VoxelGiDebugShaderRD voxel_gi_debug_shader;
+	RID voxel_gi_debug_shader_version;
+	RID voxel_gi_debug_shader_version_shaders[VOXEL_GI_DEBUG_MAX];
+	PipelineCacheRD voxel_gi_debug_shader_version_pipelines[VOXEL_GI_DEBUG_MAX];
+	RID voxel_gi_debug_uniform_set;
+
+	/* SDFGI */
+
+	struct SDFGIShader {
+		enum SDFGIPreprocessShaderVersion {
+			PRE_PROCESS_SCROLL,
+			PRE_PROCESS_SCROLL_OCCLUSION,
+			PRE_PROCESS_JUMP_FLOOD_INITIALIZE,
+			PRE_PROCESS_JUMP_FLOOD_INITIALIZE_HALF,
+			PRE_PROCESS_JUMP_FLOOD,
+			PRE_PROCESS_JUMP_FLOOD_OPTIMIZED,
+			PRE_PROCESS_JUMP_FLOOD_UPSCALE,
+			PRE_PROCESS_OCCLUSION,
+			PRE_PROCESS_STORE,
+			PRE_PROCESS_MAX
+		};
+
+		struct PreprocessPushConstant {
+			int32_t scroll[3];
+			int32_t grid_size;
+
+			int32_t probe_offset[3];
+			int32_t step_size;
+
+			int32_t half_size;
+			uint32_t occlusion_index;
+			int32_t cascade;
+			uint32_t pad;
+		};
+
+		SdfgiPreprocessShaderRD preprocess;
+		RID preprocess_shader;
+		RID preprocess_pipeline[PRE_PROCESS_MAX];
+
+		struct DebugPushConstant {
+			float grid_size[3];
+			uint32_t max_cascades;
+
+			int32_t screen_size[2];
+			float y_mult;
+
+			float z_near;
+
+			float inv_projection[3][4];
+			float cam_basis[3][3];
+			float cam_origin[3];
+		};
+
+		SdfgiDebugShaderRD debug;
+		RID debug_shader;
+		RID debug_shader_version;
+		RID debug_pipeline;
+
+		enum ProbeDebugMode {
+			PROBE_DEBUG_PROBES,
+			PROBE_DEBUG_PROBES_MULTIVIEW,
+			PROBE_DEBUG_VISIBILITY,
+			PROBE_DEBUG_VISIBILITY_MULTIVIEW,
+			PROBE_DEBUG_MAX
+		};
+
+		struct DebugProbesSceneData {
+			float projection[2][16];
+		};
+
+		struct DebugProbesPushConstant {
+			uint32_t band_power;
+			uint32_t sections_in_band;
+			uint32_t band_mask;
+			float section_arc;
+
+			float grid_size[3];
+			uint32_t cascade;
+
+			uint32_t pad;
+			float y_mult;
+			int32_t probe_debug_index;
+			int32_t probe_axis_size;
+		};
+
+		SdfgiDebugProbesShaderRD debug_probes;
+		RID debug_probes_shader;
+		RID debug_probes_shader_version;
+
+		PipelineCacheRD debug_probes_pipeline[PROBE_DEBUG_MAX];
+
+		struct Light {
+			float color[3];
+			float energy;
+
+			float direction[3];
+			uint32_t has_shadow;
+
+			float position[3];
+			float attenuation;
+
+			uint32_t type;
+			float cos_spot_angle;
+			float inv_spot_attenuation;
+			float radius;
+		};
+
+		struct DirectLightPushConstant {
+			float grid_size[3];
+			uint32_t max_cascades;
+
+			uint32_t cascade;
+			uint32_t light_count;
+			uint32_t process_offset;
+			uint32_t process_increment;
+
+			int32_t probe_axis_size;
+			float bounce_feedback;
+			float y_mult;
+			uint32_t use_occlusion;
+		};
+
+		enum {
+			DIRECT_LIGHT_MODE_STATIC,
+			DIRECT_LIGHT_MODE_DYNAMIC,
+			DIRECT_LIGHT_MODE_MAX
+		};
+		SdfgiDirectLightShaderRD direct_light;
+		RID direct_light_shader;
+		RID direct_light_pipeline[DIRECT_LIGHT_MODE_MAX];
+
+		enum {
+			INTEGRATE_MODE_PROCESS,
+			INTEGRATE_MODE_STORE,
+			INTEGRATE_MODE_SCROLL,
+			INTEGRATE_MODE_SCROLL_STORE,
+			INTEGRATE_MODE_MAX
+		};
+		struct IntegratePushConstant {
+			enum {
+				SKY_FLAGS_MODE_COLOR = 0x01,
+				SKY_FLAGS_MODE_SKY = 0x02,
+				SKY_FLAGS_ORIENTATION_SIGN = 0x04,
+			};
+
+			float grid_size[3];
+			uint32_t max_cascades;
+
+			uint32_t probe_axis_size;
+			uint32_t cascade;
+			uint32_t history_index;
+			uint32_t history_size;
+
+			uint32_t ray_count;
+			float ray_bias;
+			int32_t image_size[2];
+
+			int32_t world_offset[3];
+			uint32_t sky_flags;
+
+			int32_t scroll[3];
+			float sky_energy;
+
+			float sky_color_or_orientation[3];
+			float y_mult;
+
+			uint32_t store_ambient_texture;
+			uint32_t pad[3];
+		};
+
+		SdfgiIntegrateShaderRD integrate;
+		RID integrate_shader;
+		RID integrate_pipeline[INTEGRATE_MODE_MAX];
+
+		RID integrate_default_sky_uniform_set;
+
+	} sdfgi_shader;
+
+public:
+	static GI *get_singleton() { return singleton; }
+
+	/* GI */
+
+	enum {
+		MAX_VOXEL_GI_INSTANCES = 8
+	};
+
+	// Struct for use in render buffer
+	class RenderBuffersGI : public RenderBufferCustomDataRD {
+		GDCLASS(RenderBuffersGI, RenderBufferCustomDataRD)
+
+	private:
+		RID voxel_gi_buffer;
+
+	public:
+		RID voxel_gi_textures[MAX_VOXEL_GI_INSTANCES];
+
+		RID full_buffer;
+		RID full_dispatch;
+		RID full_mask;
+
+		/* GI buffers */
+		bool using_half_size_gi = false;
+
+		RID uniform_set[RendererSceneRender::MAX_RENDER_VIEWS];
+		RID scene_data_ubo;
+
+		RID get_voxel_gi_buffer();
+
+		virtual void configure(RenderSceneBuffersRD *p_render_buffers) override {}
+		virtual void free_data() override;
+	};
+
+	/* VOXEL GI API */
+
+	bool owns_voxel_gi(RID p_rid) { return voxel_gi_owner.owns(p_rid); }
+
+	virtual RID voxel_gi_allocate() override;
+	virtual void voxel_gi_free(RID p_voxel_gi) override;
+	virtual void voxel_gi_initialize(RID p_voxel_gi) override;
+
+	virtual void voxel_gi_allocate_data(RID p_voxel_gi, const Transform3D &p_to_cell_xform, const AABB &p_aabb, const Vector3i &p_octree_size, const Vector<uint8_t> &p_octree_cells, const Vector<uint8_t> &p_data_cells, const Vector<uint8_t> &p_distance_field, const Vector<int> &p_level_counts) override;
+
+	virtual AABB voxel_gi_get_bounds(RID p_voxel_gi) const override;
+	virtual Vector3i voxel_gi_get_octree_size(RID p_voxel_gi) const override;
+	virtual Vector<uint8_t> voxel_gi_get_octree_cells(RID p_voxel_gi) const override;
+	virtual Vector<uint8_t> voxel_gi_get_data_cells(RID p_voxel_gi) const override;
+	virtual Vector<uint8_t> voxel_gi_get_distance_field(RID p_voxel_gi) const override;
+
+	virtual Vector<int> voxel_gi_get_level_counts(RID p_voxel_gi) const override;
+	virtual Transform3D voxel_gi_get_to_cell_xform(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_dynamic_range(RID p_voxel_gi, float p_range) override;
+	virtual float voxel_gi_get_dynamic_range(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_propagation(RID p_voxel_gi, float p_range) override;
+	virtual float voxel_gi_get_propagation(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_energy(RID p_voxel_gi, float p_energy) override;
+	virtual float voxel_gi_get_energy(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_baked_exposure_normalization(RID p_voxel_gi, float p_baked_exposure) override;
+	virtual float voxel_gi_get_baked_exposure_normalization(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_bias(RID p_voxel_gi, float p_bias) override;
+	virtual float voxel_gi_get_bias(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_normal_bias(RID p_voxel_gi, float p_range) override;
+	virtual float voxel_gi_get_normal_bias(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_interior(RID p_voxel_gi, bool p_enable) override;
+	virtual bool voxel_gi_is_interior(RID p_voxel_gi) const override;
+
+	virtual void voxel_gi_set_use_two_bounces(RID p_voxel_gi, bool p_enable) override;
+	virtual bool voxel_gi_is_using_two_bounces(RID p_voxel_gi) const override;
+
+	virtual uint32_t voxel_gi_get_version(RID p_probe) const override;
+	uint32_t voxel_gi_get_data_version(RID p_probe);
+
+	RID voxel_gi_get_octree_buffer(RID p_voxel_gi) const;
+	RID voxel_gi_get_data_buffer(RID p_voxel_gi) const;
+
+	RID voxel_gi_get_sdf_texture(RID p_voxel_gi);
+
+	Dependency *voxel_gi_get_dependency(RID p_voxel_gi) const;
+
+	/* VOXEL_GI INSTANCE */
+
+	_FORCE_INLINE_ RID voxel_gi_instance_get_texture(RID p_probe) {
+		VoxelGIInstance *voxel_gi = voxel_gi_instance_owner.get_or_null(p_probe);
+		ERR_FAIL_NULL_V(voxel_gi, RID());
+		return voxel_gi->texture;
+	}
+
+	_FORCE_INLINE_ void voxel_gi_instance_set_render_index(RID p_probe, uint32_t p_index) {
+		VoxelGIInstance *voxel_gi = voxel_gi_instance_owner.get_or_null(p_probe);
+		ERR_FAIL_NULL(voxel_gi);
+
+		voxel_gi->render_index = p_index;
+	}
+
+	bool voxel_gi_instance_owns(RID p_rid) const {
+		return voxel_gi_instance_owner.owns(p_rid);
+	}
+
+	void voxel_gi_instance_free(RID p_rid);
+
+	RS::VoxelGIQuality voxel_gi_quality = RS::VOXEL_GI_QUALITY_LOW;
+
+	/* SDFGI */
+
+	class SDFGI : public RenderBufferCustomDataRD {
+		GDCLASS(SDFGI, RenderBufferCustomDataRD)
+
+	public:
+		enum {
+			MAX_CASCADES = 8,
+			CASCADE_SIZE = 128,
+			PROBE_DIVISOR = 16,
+			ANISOTROPY_SIZE = 6,
+			MAX_DYNAMIC_LIGHTS = 128,
+			MAX_STATIC_LIGHTS = 1024,
+			LIGHTPROBE_OCT_SIZE = 6,
+			SH_SIZE = 16
+		};
+
+		struct Cascade {
+			struct UBO {
+				float offset[3];
+				float to_cell;
+				int32_t probe_offset[3];
+				uint32_t pad;
+				float pad2[4];
+			};
+
+			//cascade blocks are full-size for volume (128^3), half size for albedo/emission
+			RID sdf_tex;
+			RID light_tex;
+			RID light_aniso_0_tex;
+			RID light_aniso_1_tex;
+
+			RID light_data;
+			RID light_aniso_0_data;
+			RID light_aniso_1_data;
+
+			struct SolidCell { // this struct is unused, but remains as reference for size
+				uint32_t position;
+				uint32_t albedo;
+				uint32_t static_light;
+				uint32_t static_light_aniso;
+			};
+
+			// Buffers for indirect compute dispatch.
+			RID solid_cell_dispatch_buffer_storage;
+			RID solid_cell_dispatch_buffer_call;
+			RID solid_cell_buffer;
+
+			RID lightprobe_history_tex;
+			RID lightprobe_average_tex;
+
+			float cell_size;
+			Vector3i position;
+
+			static const Vector3i DIRTY_ALL;
+			Vector3i dirty_regions; //(0,0,0 is not dirty, negative is refresh from the end, DIRTY_ALL is refresh all.
+
+			RID sdf_store_uniform_set;
+			RID sdf_direct_light_static_uniform_set;
+			RID sdf_direct_light_dynamic_uniform_set;
+			RID scroll_uniform_set;
+			RID scroll_occlusion_uniform_set;
+			RID integrate_uniform_set;
+			RID lights_buffer;
+
+			float baked_exposure_normalization = 1.0;
+
+			bool all_dynamic_lights_dirty = true;
+		};
+
+		// access to our containers
+		GI *gi = nullptr;
+
+		// used for rendering (voxelization)
+		RID render_albedo;
+		RID render_emission;
+		RID render_emission_aniso;
+		RID render_occlusion[8];
+		RID render_geom_facing;
+
+		RID render_sdf[2];
+		RID render_sdf_half[2];
+
+		// used for ping pong processing in cascades
+		RID sdf_initialize_uniform_set;
+		RID sdf_initialize_half_uniform_set;
+		RID jump_flood_uniform_set[2];
+		RID jump_flood_half_uniform_set[2];
+		RID sdf_upscale_uniform_set;
+		int upscale_jfa_uniform_set_index;
+		RID occlusion_uniform_set;
+
+		uint32_t cascade_size = 128;
+
+		LocalVector<Cascade> cascades;
+
+		RID lightprobe_texture;
+		RID lightprobe_data;
+		RID occlusion_texture;
+		RID occlusion_data;
+		RID ambient_texture; //integrates with volumetric fog
+
+		RID lightprobe_history_scroll; //used for scrolling lightprobes
+		RID lightprobe_average_scroll; //used for scrolling lightprobes
+
+		uint32_t history_size = 0;
+		float solid_cell_ratio = 0;
+		uint32_t solid_cell_count = 0;
+
+		int num_cascades = 6;
+		float min_cell_size = 0;
+		uint32_t probe_axis_count = 0; //amount of probes per axis, this is an odd number because it encloses endpoints
+
+		RID debug_uniform_set[RendererSceneRender::MAX_RENDER_VIEWS];
+		RID debug_probes_scene_data_ubo;
+		RID debug_probes_uniform_set;
+		RID cascades_ubo;
+
+		bool uses_occlusion = false;
+		float bounce_feedback = 0.5;
+		bool reads_sky = true;
+		float energy = 1.0;
+		float normal_bias = 1.1;
+		float probe_bias = 1.1;
+		RS::EnvironmentSDFGIYScale y_scale_mode = RS::ENV_SDFGI_Y_SCALE_75_PERCENT;
+
+		float y_mult = 1.0;
+
+		uint32_t version = 0;
+		uint32_t render_pass = 0;
+
+		int32_t cascade_dynamic_light_count[SDFGI::MAX_CASCADES]; //used dynamically
+		RID integrate_sky_uniform_set;
+
+		virtual void configure(RenderSceneBuffersRD *p_render_buffers) override {}
+		virtual void free_data() override;
+		~SDFGI();
+
+		void create(RID p_env, const Vector3 &p_world_position, uint32_t p_requested_history_size, GI *p_gi);
+		void update(RID p_env, const Vector3 &p_world_position);
+		void update_light();
+		void update_probes(RID p_env, RendererRD::SkyRD::Sky *p_sky);
+		void store_probes();
+		int get_pending_region_data(int p_region, Vector3i &r_local_offset, Vector3i &r_local_size, AABB &r_bounds) const;
+		void update_cascades();
+
+		void debug_draw(uint32_t p_view_count, const Projection *p_projections, const Transform3D &p_transform, int p_width, int p_height, RID p_render_target, RID p_texture, const Vector<RID> &p_texture_views);
+		void debug_probes(RID p_framebuffer, const uint32_t p_view_count, const Projection *p_camera_with_transforms);
+
+		void pre_process_gi(const Transform3D &p_transform, RenderDataRD *p_render_data);
+		void render_region(Ref<RenderSceneBuffersRD> p_render_buffers, int p_region, const PagedArray<RenderGeometryInstance *> &p_instances, float p_exposure_normalization);
+		void render_static_lights(RenderDataRD *p_render_data, Ref<RenderSceneBuffersRD> p_render_buffers, uint32_t p_cascade_count, const uint32_t *p_cascade_indices, const PagedArray<RID> *p_positional_light_cull_result);
+	};
+
+	RS::EnvironmentSDFGIRayCount sdfgi_ray_count = RS::ENV_SDFGI_RAY_COUNT_16;
+	RS::EnvironmentSDFGIFramesToConverge sdfgi_frames_to_converge = RS::ENV_SDFGI_CONVERGE_IN_30_FRAMES;
+	RS::EnvironmentSDFGIFramesToUpdateLight sdfgi_frames_to_update_light = RS::ENV_SDFGI_UPDATE_LIGHT_IN_4_FRAMES;
+
+	float sdfgi_solid_cell_ratio = 0.25;
+	Vector3 sdfgi_debug_probe_pos;
+	Vector3 sdfgi_debug_probe_dir;
+	bool sdfgi_debug_probe_enabled = false;
+	Vector3i sdfgi_debug_probe_index;
+	uint32_t sdfgi_current_version = 0;
+
+	/* SDFGI UPDATE */
+
+	int sdfgi_get_lightprobe_octahedron_size() const { return SDFGI::LIGHTPROBE_OCT_SIZE; }
+
+	virtual void sdfgi_reset() override;
+
+	struct SDFGIData {
+		float grid_size[3];
+		uint32_t max_cascades;
+
+		uint32_t use_occlusion;
+		int32_t probe_axis_size;
+		float probe_to_uvw;
+		float normal_bias;
+
+		float lightprobe_tex_pixel_size[3];
+		float energy;
+
+		float lightprobe_uv_offset[3];
+		float y_mult;
+
+		float occlusion_clamp[3];
+		uint32_t pad3;
+
+		float occlusion_renormalize[3];
+		uint32_t pad4;
+
+		float cascade_probe_size[3];
+		uint32_t pad5;
+
+		struct ProbeCascadeData {
+			float position[3]; //offset of (0,0,0) in world coordinates
+			float to_probe; // 1/bounds * grid_size
+			int32_t probe_world_offset[3];
+			float to_cell; // 1/bounds * grid_size
+			float pad[3];
+			float exposure_normalization;
+		};
+
+		ProbeCascadeData cascades[SDFGI::MAX_CASCADES];
+	};
+
+	struct VoxelGIData {
+		float xform[16]; // 64 - 64
+
+		float bounds[3]; // 12 - 76
+		float dynamic_range; // 4 - 80
+
+		float bias; // 4 - 84
+		float normal_bias; // 4 - 88
+		uint32_t blend_ambient; // 4 - 92
+		uint32_t mipmaps; // 4 - 96
+
+		float pad[3]; // 12 - 108
+		float exposure_normalization; // 4 - 112
+	};
+
+	struct SceneData {
+		float inv_projection[2][16];
+		float cam_transform[16];
+		float eye_offset[2][4];
+
+		int32_t screen_size[2];
+		float pad1;
+		float pad2;
+	};
+
+	struct PushConstant {
+		uint32_t max_voxel_gi_instances;
+		uint32_t high_quality_vct;
+		uint32_t orthogonal;
+		uint32_t view_index;
+
+		float proj_info[4];
+
+		float z_near;
+		float z_far;
+		float pad2;
+		float pad3;
+	};
+
+	RID sdfgi_ubo;
+
+	enum Group {
+		GROUP_NORMAL,
+		GROUP_VRS,
+	};
+
+	enum Mode {
+		MODE_VOXEL_GI,
+		MODE_VOXEL_GI_WITHOUT_SAMPLER,
+		MODE_SDFGI,
+		MODE_COMBINED,
+		MODE_COMBINED_WITHOUT_SAMPLER,
+		MODE_MAX
+	};
+
+	enum ShaderSpecializations {
+		SHADER_SPECIALIZATION_HALF_RES = 1 << 0,
+		SHADER_SPECIALIZATION_USE_FULL_PROJECTION_MATRIX = 1 << 1,
+		SHADER_SPECIALIZATION_USE_VRS = 1 << 2,
+		SHADER_SPECIALIZATION_VARIATIONS = 8,
+	};
+
+	RID default_voxel_gi_buffer;
+
+	bool half_resolution = false;
+	GiShaderRD shader;
+	RID shader_version;
+	RID pipelines[SHADER_SPECIALIZATION_VARIATIONS][MODE_MAX];
+
+	GI();
+	~GI();
+
+	void init(RendererRD::SkyRD *p_sky);
+	void free();
+
+	Ref<SDFGI> create_sdfgi(RID p_env, const Vector3 &p_world_position, uint32_t p_requested_history_size);
+
+	void setup_voxel_gi_instances(RenderDataRD *p_render_data, Ref<RenderSceneBuffersRD> p_render_buffers, const Transform3D &p_transform, const PagedArray<RID> &p_voxel_gi_instances, uint32_t &r_voxel_gi_instances_used);
+	void process_gi(Ref<RenderSceneBuffersRD> p_render_buffers, const RID *p_normal_roughness_slices, RID p_voxel_gi_buffer, RID p_environment, uint32_t p_view_count, const Projection *p_projections, const Vector3 *p_eye_offsets, const Transform3D &p_cam_transform, const PagedArray<RID> &p_voxel_gi_instances);
+
+	RID voxel_gi_instance_create(RID p_base);
+	void voxel_gi_instance_set_transform_to_data(RID p_probe, const Transform3D &p_xform);
+	bool voxel_gi_needs_update(RID p_probe) const;
+	void voxel_gi_update(RID p_probe, bool p_update_light_instances, const Vector<RID> &p_light_instances, const PagedArray<RenderGeometryInstance *> &p_dynamic_objects);
+	void debug_voxel_gi(RID p_voxel_gi, RD::DrawListID p_draw_list, RID p_framebuffer, const Projection &p_camera_with_transform, bool p_lighting, bool p_emission, float p_alpha);
+
+	void enable_vrs_shader_group();
+};
+
+} // namespace RendererRD

servers/rendering/renderer_rd/environment/sky.h

@@ -0,0 +1,324 @@
+/**************************************************************************/
+/*  sky.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
+
+#include "core/templates/rid_owner.h"
+#include "servers/rendering/renderer_compositor.h"
+#include "servers/rendering/renderer_rd/pipeline_cache_rd.h"
+#include "servers/rendering/renderer_rd/shaders/environment/sky.glsl.gen.h"
+#include "servers/rendering/renderer_rd/storage_rd/material_storage.h"
+#include "servers/rendering/renderer_rd/storage_rd/render_data_rd.h"
+#include "servers/rendering/renderer_scene_render.h"
+#include "servers/rendering/rendering_device.h"
+#include "servers/rendering/shader_compiler.h"
+
+// Forward declare RendererSceneRenderRD so we can pass it into some of our methods, these classes are pretty tightly bound
+class RendererSceneRenderRD;
+class RenderSceneBuffersRD;
+
+namespace RendererRD {
+
+class SkyRD {
+public:
+	enum SkySet {
+		SKY_SET_UNIFORMS,
+		SKY_SET_MATERIAL,
+		SKY_SET_TEXTURES,
+		SKY_SET_FOG,
+	};
+
+	const int SAMPLERS_BINDING_FIRST_INDEX = 4;
+
+	// Skys need less info from Directional Lights than the normal shaders
+	struct SkyDirectionalLightData {
+		float direction[3];
+		float energy;
+		float color[3];
+		float size;
+		uint32_t enabled;
+		uint32_t pad[3];
+	};
+
+private:
+	RD::DataFormat texture_format = RD::DATA_FORMAT_R16G16B16A16_SFLOAT;
+
+	enum SkyTextureSetVersion {
+		SKY_TEXTURE_SET_BACKGROUND,
+		SKY_TEXTURE_SET_HALF_RES,
+		SKY_TEXTURE_SET_QUARTER_RES,
+		SKY_TEXTURE_SET_CUBEMAP,
+		SKY_TEXTURE_SET_CUBEMAP_HALF_RES,
+		SKY_TEXTURE_SET_CUBEMAP_QUARTER_RES,
+		SKY_TEXTURE_SET_MAX
+	};
+
+	enum SkyVersion {
+		SKY_VERSION_BACKGROUND,
+		SKY_VERSION_HALF_RES,
+		SKY_VERSION_QUARTER_RES,
+		SKY_VERSION_CUBEMAP,
+		SKY_VERSION_CUBEMAP_HALF_RES,
+		SKY_VERSION_CUBEMAP_QUARTER_RES,
+
+		SKY_VERSION_BACKGROUND_MULTIVIEW,
+		SKY_VERSION_HALF_RES_MULTIVIEW,
+		SKY_VERSION_QUARTER_RES_MULTIVIEW,
+
+		SKY_VERSION_MAX
+	};
+
+	struct SkyPushConstant {
+		float orientation[12]; // 48 - 48
+		float projection[4]; // 16 - 64
+		float position[3]; // 12 - 76
+		float time; // 4 - 80
+		float pad[2]; // 8 - 88
+		float luminance_multiplier; // 4 - 92
+		float brightness_multiplier; // 4 - 96
+		// 128 is the max size of a push constant. We can replace "pad" but we can't add any more.
+	};
+
+	struct SkyShaderData : public RendererRD::MaterialStorage::ShaderData {
+		bool valid = false;
+		RID version;
+
+		PipelineCacheRD pipelines[SKY_VERSION_MAX];
+		Vector<ShaderCompiler::GeneratedCode::Texture> texture_uniforms;
+
+		Vector<uint32_t> ubo_offsets;
+		uint32_t ubo_size = 0;
+
+		String code;
+
+		bool uses_time = false;
+		bool uses_position = false;
+		bool uses_half_res = false;
+		bool uses_quarter_res = false;
+		bool uses_light = false;
+
+		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;
+		virtual Pair<ShaderRD *, RID> get_native_shader_and_version() const;
+
+		SkyShaderData() {}
+		virtual ~SkyShaderData();
+	};
+
+	void _render_sky(RD::DrawListID p_list, float p_time, RID p_fb, PipelineCacheRD *p_pipeline, RID p_uniform_set, RID p_texture_set, const Projection &p_projection, const Basis &p_orientation, const Vector3 &p_position, float p_luminance_multiplier, float p_brightness_modifier);
+
+public:
+	struct SkySceneState {
+		struct UBO {
+			float combined_reprojection[RendererSceneRender::MAX_RENDER_VIEWS][16]; // 2 x 64 - 128
+			float view_inv_projections[RendererSceneRender::MAX_RENDER_VIEWS][16]; // 2 x 64 - 256
+			float view_eye_offsets[RendererSceneRender::MAX_RENDER_VIEWS][4]; // 2 x 16 - 288
+
+			uint32_t volumetric_fog_enabled; // 4 - 292
+			float volumetric_fog_inv_length; // 4 - 296
+			float volumetric_fog_detail_spread; // 4 - 300
+			float volumetric_fog_sky_affect; // 4 - 304
+
+			uint32_t fog_enabled; // 4 - 308
+			float fog_sky_affect; // 4 - 312
+			float fog_density; // 4 - 316
+			float fog_sun_scatter; // 4 - 320
+
+			float fog_light_color[3]; // 12 - 332
+			float fog_aerial_perspective; // 4 - 336
+
+			float z_far; // 4 - 340
+			uint32_t directional_light_count; // 4 - 344
+			uint32_t pad1; // 4 - 348
+			uint32_t pad2; // 4 - 352
+		};
+
+		UBO ubo;
+
+		uint32_t view_count = 1;
+		Transform3D cam_transform;
+		Projection cam_projection;
+
+		SkyDirectionalLightData *directional_lights = nullptr;
+		SkyDirectionalLightData *last_frame_directional_lights = nullptr;
+		uint32_t max_directional_lights;
+		uint32_t last_frame_directional_light_count;
+		RID directional_light_buffer;
+		RID uniform_set;
+		RID uniform_buffer;
+		RID fog_uniform_set;
+		RID default_fog_uniform_set;
+
+		RID fog_shader;
+		RID fog_material;
+		RID fog_only_texture_uniform_set;
+	} sky_scene_state;
+
+	struct ReflectionData {
+		struct Layer {
+			struct Mipmap {
+				RID framebuffers[6];
+				RID views[6];
+				Size2i size;
+			};
+			Vector<Mipmap> mipmaps; //per-face view
+			Vector<RID> views; // per-cubemap view
+		};
+
+		struct DownsampleLayer {
+			struct Mipmap {
+				RID view;
+				Size2i size;
+
+				// for mobile only
+				RID views[6];
+				RID framebuffers[6];
+			};
+			Vector<Mipmap> mipmaps;
+		};
+
+		RID radiance_base_cubemap; //cubemap for first layer, first cubemap
+		RID downsampled_radiance_cubemap;
+		DownsampleLayer downsampled_layer;
+		RID coefficient_buffer;
+
+		bool dirty = true;
+
+		Vector<Layer> layers;
+
+		void clear_reflection_data();
+		void update_reflection_data(int p_size, int p_mipmaps, bool p_use_array, RID p_base_cube, int p_base_layer, bool p_low_quality, int p_roughness_layers, RD::DataFormat p_texture_format);
+		void create_reflection_fast_filter(bool p_use_arrays);
+		void create_reflection_importance_sample(bool p_use_arrays, int p_cube_side, int p_base_layer, uint32_t p_sky_ggx_samples_quality);
+		void update_reflection_mipmaps(int p_start, int p_end);
+	};
+
+	/* Sky shader */
+
+	struct SkyShader {
+		SkyShaderRD shader;
+		ShaderCompiler compiler;
+
+		RID default_shader;
+		RID default_material;
+		RID default_shader_rd;
+	} sky_shader;
+
+	struct SkyMaterialData : public RendererRD::MaterialStorage::MaterialData {
+		SkyShaderData *shader_data = nullptr;
+		RID uniform_set;
+		bool uniform_set_updated;
+
+		virtual void set_render_priority(int p_priority) {}
+		virtual void set_next_pass(RID p_pass) {}
+		virtual bool update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
+		virtual ~SkyMaterialData();
+	};
+
+	struct Sky {
+		RID radiance;
+		RID quarter_res_pass;
+		RID quarter_res_framebuffer;
+		Size2i screen_size;
+
+		RID uniform_set;
+
+		RID material;
+		RID uniform_buffer;
+
+		int radiance_size = 256;
+
+		RS::SkyMode mode = RS::SKY_MODE_AUTOMATIC;
+
+		ReflectionData reflection;
+		bool dirty = false;
+		int processing_layer = 0;
+		Sky *dirty_list = nullptr;
+		float baked_exposure = 1.0;
+
+		//State to track when radiance cubemap needs updating
+		SkyMaterialData *prev_material = nullptr;
+		Vector3 prev_position;
+		float prev_time;
+
+		void free();
+
+		RID get_textures(SkyTextureSetVersion p_version, RID p_default_shader_rd, Ref<RenderSceneBuffersRD> p_render_buffers);
+		bool set_radiance_size(int p_radiance_size);
+		bool set_mode(RS::SkyMode p_mode);
+		bool set_material(RID p_material);
+		Ref<Image> bake_panorama(float p_energy, int p_roughness_layers, const Size2i &p_size);
+	};
+
+	uint32_t sky_ggx_samples_quality;
+	bool sky_use_cubemap_array;
+#if defined(MACOS_ENABLED) && defined(__x86_64__)
+	void check_cubemap_array();
+#endif
+	Sky *dirty_sky_list = nullptr;
+	mutable RID_Owner<Sky, true> sky_owner;
+	int roughness_layers;
+
+	RendererRD::MaterialStorage::ShaderData *_create_sky_shader_func();
+	static RendererRD::MaterialStorage::ShaderData *_create_sky_shader_funcs();
+
+	RendererRD::MaterialStorage::MaterialData *_create_sky_material_func(SkyShaderData *p_shader);
+	static RendererRD::MaterialStorage::MaterialData *_create_sky_material_funcs(RendererRD::MaterialStorage::ShaderData *p_shader);
+
+	SkyRD();
+	void init();
+	void set_texture_format(RD::DataFormat p_texture_format);
+	~SkyRD();
+
+	void setup_sky(const RenderDataRD *p_render_data, const Size2i p_screen_size);
+	void update_radiance_buffers(Ref<RenderSceneBuffersRD> p_render_buffers, RID p_env, const Vector3 &p_global_pos, double p_time, float p_luminance_multiplier = 1.0, float p_brightness_multiplier = 1.0);
+	void update_res_buffers(Ref<RenderSceneBuffersRD> p_render_buffers, RID p_env, double p_time, float p_luminance_multiplier = 1.0, float p_brightness_multiplier = 1.0);
+	void draw_sky(RD::DrawListID p_draw_list, Ref<RenderSceneBuffersRD> p_render_buffers, RID p_env, RID p_fb, double p_time, float p_luminance_multiplier = 1.0, float p_brightness_multiplier = 1.0);
+
+	void invalidate_sky(Sky *p_sky);
+	void update_dirty_skys();
+
+	RID sky_get_material(RID p_sky) const;
+	RID sky_get_radiance_texture_rd(RID p_sky) const;
+	float sky_get_baked_exposure(RID p_sky) const;
+
+	RID allocate_sky_rid();
+	void initialize_sky_rid(RID p_rid);
+	Sky *get_sky(RID p_sky) const;
+	void free_sky(RID p_sky);
+	void sky_set_radiance_size(RID p_sky, int p_radiance_size);
+	void sky_set_mode(RID p_sky, RS::SkyMode p_mode);
+	void sky_set_material(RID p_sky, RID p_material);
+	Ref<Image> sky_bake_panorama(RID p_sky, float p_energy, bool p_bake_irradiance, const Size2i &p_size);
+};
+
+} // namespace RendererRD