initial commit, 4.5 stable

drivers/gles3/effects/copy_effects.h

@@ -0,0 +1,79 @@
+/**************************************************************************/
+/*  copy_effects.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/shaders/effects/copy.glsl.gen.h"
+
+namespace GLES3 {
+
+class CopyEffects {
+private:
+	struct Copy {
+		CopyShaderGLES3 shader;
+		RID shader_version;
+	} copy;
+
+	static CopyEffects *singleton;
+
+	// Use for full-screen effects. Slightly more efficient than screen_quad as this eliminates pixel overdraw along the diagonal.
+	GLuint screen_triangle = 0;
+	GLuint screen_triangle_array = 0;
+
+	// Use for rect-based effects.
+	GLuint quad = 0;
+	GLuint quad_array = 0;
+
+public:
+	static CopyEffects *get_singleton();
+
+	CopyEffects();
+	~CopyEffects();
+
+	// These functions assume that a framebuffer and texture are bound already. They only manage the shader, uniforms, and vertex array.
+	void copy_to_rect(const Rect2 &p_rect, bool p_linear_to_srgb = false);
+	void copy_to_rect_3d(const Rect2 &p_rect, float p_layer, int p_type, float p_lod = 0.0f, bool p_linear_to_srgb = false);
+	void copy_with_lens_distortion(const Rect2 &p_rect, float p_layer, const Vector2 &p_eye_center, float p_k1, float p_k2, float p_upscale, float p_aspect_ration, bool p_linear_to_srgb = false);
+	void copy_to_and_from_rect(const Rect2 &p_rect);
+	void copy_screen(float p_multiply = 1.0);
+	void copy_cube_to_rect(const Rect2 &p_rect);
+	void copy_cube_to_panorama(float p_mip_level);
+	void bilinear_blur(GLuint p_source_texture, int p_mipmap_count, const Rect2i &p_region);
+	void gaussian_blur(GLuint p_source_texture, int p_mipmap_count, const Rect2i &p_region, const Size2i &p_size);
+	void set_color(const Color &p_color, const Rect2i &p_region);
+	void draw_screen_triangle();
+	void draw_screen_quad();
+};
+
+} //namespace GLES3
+
+#endif // GLES3_ENABLED