initial commit, 4.5 stable

drivers/gles3/effects/feed_effects.cpp

@@ -0,0 +1,128 @@
+/**************************************************************************/
+/*  feed_effects.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 "feed_effects.h"
+
+#ifdef ANDROID_ENABLED
+#include <GLES3/gl3ext.h>
+#endif
+
+#define GL_PROGRAM_POINT_SIZE 0x8642
+
+using namespace GLES3;
+
+FeedEffects *FeedEffects::singleton = nullptr;
+
+FeedEffects *FeedEffects::get_singleton() {
+	return singleton;
+}
+
+FeedEffects::FeedEffects() {
+	singleton = this;
+
+	feed.shader.initialize();
+	feed.shader_version = feed.shader.version_create();
+	feed.shader.version_bind_shader(feed.shader_version, FeedShaderGLES3::MODE_DEFAULT);
+
+	{ // Screen Triangle.
+		glGenBuffers(1, &screen_triangle);
+		glBindBuffer(GL_ARRAY_BUFFER, screen_triangle);
+
+		const float qv[6] = {
+			-1.0f,
+			-1.0f,
+			3.0f,
+			-1.0f,
+			-1.0f,
+			3.0f,
+		};
+
+		glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 6, qv, GL_STATIC_DRAW);
+		glBindBuffer(GL_ARRAY_BUFFER, 0); //unbind
+
+		glGenVertexArrays(1, &screen_triangle_array);
+		glBindVertexArray(screen_triangle_array);
+		glBindBuffer(GL_ARRAY_BUFFER, screen_triangle);
+		glVertexAttribPointer(RS::ARRAY_VERTEX, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 2, nullptr);
+		glEnableVertexAttribArray(RS::ARRAY_VERTEX);
+		glBindVertexArray(0);
+		glBindBuffer(GL_ARRAY_BUFFER, 0); //unbind
+	}
+}
+
+FeedEffects::~FeedEffects() {
+	singleton = nullptr;
+	glDeleteBuffers(1, &screen_triangle);
+	glDeleteVertexArrays(1, &screen_triangle_array);
+	feed.shader.version_free(feed.shader_version);
+}
+
+Transform3D transform3D_from_mat4(const float *p_mat4) {
+	Transform3D res;
+
+	res.basis.rows[0][0] = p_mat4[0];
+	res.basis.rows[1][0] = p_mat4[1];
+	res.basis.rows[2][0] = p_mat4[2];
+	// p_mat4[3] = 0;
+	res.basis.rows[0][1] = p_mat4[4];
+	res.basis.rows[1][1] = p_mat4[5];
+	res.basis.rows[2][1] = p_mat4[6];
+	// p_mat4[7] = 0;
+	res.basis.rows[0][2] = p_mat4[8];
+	res.basis.rows[1][2] = p_mat4[9];
+	res.basis.rows[2][2] = p_mat4[10];
+	// p_mat4[11] = 0;
+	res.origin.x = p_mat4[12];
+	res.origin.y = p_mat4[13];
+	res.origin.z = p_mat4[14];
+	// p_mat4[15] = 1;
+
+	return res;
+}
+
+void FeedEffects::draw() {
+	bool success = feed.shader.version_bind_shader(feed.shader_version, FeedShaderGLES3::MODE_DEFAULT, FeedShaderGLES3::USE_EXTERNAL_SAMPLER);
+	if (!success) {
+		OS::get_singleton()->print("Godot : FeedShaderGLES3 Could not bind version_bind_shader USE_EXTERNAL_SAMPLER");
+		return;
+	}
+
+	draw_screen_triangle();
+}
+
+void FeedEffects::draw_screen_triangle() {
+	glBindVertexArray(screen_triangle_array);
+	glDrawArrays(GL_TRIANGLES, 0, 3);
+	glBindVertexArray(0);
+}
+
+#endif // GLES3_ENABLED