initial commit, 4.5 stable

drivers/gles3/effects/glow.h

@@ -0,0 +1,86 @@
+/**************************************************************************/
+/*  glow.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/glow.glsl.gen.h"
+
+namespace GLES3 {
+
+class Glow {
+private:
+	static Glow *singleton;
+
+	struct GLOW {
+		GlowShaderGLES3 shader;
+		RID shader_version;
+	} glow;
+
+	float luminance_multiplier = 1.0;
+
+	float glow_intensity = 1.0;
+	float glow_bloom = 0.0;
+	float glow_hdr_bleed_threshold = 1.0;
+	float glow_hdr_bleed_scale = 2.0;
+	float glow_hdr_luminance_cap = 12.0;
+
+	// 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;
+
+	void _draw_screen_triangle();
+
+public:
+	struct GLOWLEVEL {
+		Size2i size;
+		GLuint color = 0;
+		GLuint fbo = 0;
+	};
+
+	static Glow *get_singleton();
+
+	Glow();
+	~Glow();
+
+	void set_intensity(float p_value) { glow_intensity = p_value; }
+	void set_luminance_multiplier(float p_luminance_multiplier) { luminance_multiplier = p_luminance_multiplier; }
+	void set_glow_bloom(float p_bloom) { glow_bloom = p_bloom; }
+	void set_glow_hdr_bleed_threshold(float p_threshold) { glow_hdr_bleed_threshold = p_threshold; }
+	void set_glow_hdr_bleed_scale(float p_scale) { glow_hdr_bleed_scale = p_scale; }
+	void set_glow_hdr_luminance_cap(float p_cap) { glow_hdr_luminance_cap = p_cap; }
+
+	void process_glow(GLuint p_source_color, Size2i p_size, const GLOWLEVEL *p_glow_buffers, uint32_t p_view = 0, bool p_use_multiview = false);
+};
+
+} //namespace GLES3
+
+#endif // GLES3_ENABLED