1/* Copyright (c) 2013-2019 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 VIDEO_GL_H
  7#define VIDEO_GL_H
  8
  9#include <mgba-util/common.h>
 10
 11CXX_GUARD_START
 12
 13#include <mgba/core/core.h>
 14#include <mgba/gba/interface.h>
 15#include <mgba/internal/gba/io.h>
 16#include <mgba/internal/gba/renderers/common.h>
 17#include <mgba/internal/gba/video.h>
 18
 19#ifdef USE_EPOXY
 20#include <epoxy/gl.h>
 21#elif defined(BUILD_GL)
 22#ifdef __APPLE__
 23#include <OpenGL/gl3.h>
 24#else
 25#define GL_GLEXT_PROTOTYPES
 26#include <GL/gl.h>
 27#include <GL/glext.h>
 28#endif
 29#else
 30#include <GLES2/gl2.h>
 31#endif
 32
 33struct GBAVideoGLAffine {
 34	int16_t dx;
 35	int16_t dmx;
 36	int16_t dy;
 37	int16_t dmy;
 38	int32_t sx;
 39	int32_t sy;
 40};
 41
 42struct GBAVideoGLBackground {
 43	GLuint fbo;
 44	GLuint tex;
 45	GLuint flags;
 46
 47	unsigned index;
 48	int enabled;
 49	unsigned priority;
 50	uint32_t charBase;
 51	int mosaic;
 52	int multipalette;
 53	uint32_t screenBase;
 54	int overflow;
 55	int size;
 56	int target1;
 57	int target2;
 58	uint16_t x;
 59	uint16_t y;
 60	int32_t refx;
 61	int32_t refy;
 62
 63	struct GBAVideoGLAffine affine[4];
 64};
 65
 66enum {
 67	GBA_GL_FBO_OBJ = 0,
 68	GBA_GL_FBO_COMPOSITE = 1,
 69	GBA_GL_FBO_OUTPUT = 2,
 70
 71	GBA_GL_TEX_OBJ_COLOR = 0,
 72	GBA_GL_TEX_OBJ_FLAGS = 1,
 73	GBA_GL_TEX_COMPOSITE_COLOR = 2,
 74	GBA_GL_TEX_COMPOSITE_FLAGS = 3,
 75	GBA_GL_TEX_COMPOSITE_OLD_COLOR = 4,
 76	GBA_GL_TEX_COMPOSITE_OLD_FLAGS = 5,
 77};
 78
 79struct GBAVideoGLRenderer {
 80	struct GBAVideoRenderer d;
 81
 82	struct GBAVideoGLBackground bg[4];
 83
 84	int oamMax;
 85	bool oamDirty;
 86	struct GBAVideoRendererSprite sprites[128];
 87
 88	GLuint fbo[3];
 89	GLuint layers[6];
 90
 91	GLuint outputTex;
 92
 93	GLuint paletteTex;
 94	bool paletteDirty;
 95
 96	GLuint vramTex;
 97	unsigned vramDirty;
 98
 99	GLuint bgProgram[6];
100	GLuint objProgram[2];
101
102	GLuint compositeProgram;
103	GLuint finalizeProgram;
104
105	GBARegisterDISPCNT dispcnt;
106
107	unsigned target1Obj;
108	unsigned target1Bd;
109	unsigned target2Obj;
110	unsigned target2Bd;
111	enum GBAVideoBlendEffect blendEffect;
112	uint16_t blda;
113	uint16_t bldb;
114	uint16_t bldy;
115
116	GBAMosaicControl mosaic;
117
118	int firstAffine;
119
120	int scale;
121};
122
123void GBAVideoGLRendererCreate(struct GBAVideoGLRenderer* renderer);
124
125CXX_GUARD_END
126
127#endif