1/* Copyright (c) 2013-2015 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#ifndef GLES2_H
 7#define GLES2_H
 8
 9#ifdef BUILD_GL
10#ifdef __APPLE__
11#include <OpenGL/gl.h>
12#else
13#include <GL/gl.h>
14#endif
15#else
16#include <GLES2/gl2.h>
17#endif
18
19#include "platform/video-backend.h"
20
21struct GBAGLES2Shader {
22	unsigned width;
23	unsigned height;
24	bool filter;
25	bool blend;
26	GLuint tex;
27	GLuint fbo;
28	GLuint fragmentShader;
29	GLuint program;
30	GLuint texLocation;
31	GLuint positionLocation;
32};
33
34struct GBAGLES2Context {
35	struct VideoBackend d;
36
37	GLuint tex;
38	GLuint fragmentShader;
39	GLuint vertexShader;
40	GLuint nullVertexShader;
41	GLuint program;
42	GLuint bufferObject;
43	GLuint texLocation;
44	GLuint positionLocation;
45	GLuint gammaLocation;
46	GLuint biasLocation;
47	GLuint scaleLocation;
48
49	GLfloat gamma;
50	GLfloat bias[3];
51	GLfloat scale[3];
52
53	struct GBAGLES2Shader* shader;
54};
55
56void GBAGLES2ContextCreate(struct GBAGLES2Context*);
57
58void GBAGLES2ShaderInit(struct GBAGLES2Shader*, const char*, int width, int height);
59void GBAGLES2ShaderDeinit(struct GBAGLES2Shader*);
60void GBAGLES2ShaderAttach(struct GBAGLES2Context*, struct GBAGLES2Shader*);
61void GBAGLES2ShaderDetach(struct GBAGLES2Context*);
62
63#endif