mirror of
https://github.com/italicsjenga/agb.git
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208 lines
3.8 KiB
C
208 lines
3.8 KiB
C
/* Copyright (c) 2013-2019 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef VIDEO_GL_H
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#define VIDEO_GL_H
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#include <mgba-util/common.h>
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CXX_GUARD_START
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#include <mgba/core/core.h>
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#include <mgba/gba/interface.h>
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#include <mgba/internal/gba/io.h>
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#include <mgba/internal/gba/renderers/common.h>
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#include <mgba/internal/gba/video.h>
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#if defined(BUILD_GLES2) || defined(BUILD_GLES3)
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#ifdef USE_EPOXY
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#include <epoxy/gl.h>
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#elif defined(BUILD_GL)
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#ifdef __APPLE__
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#include <OpenGL/gl3.h>
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#else
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#define GL_GLEXT_PROTOTYPES
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#include <GL/gl.h>
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#include <GL/glext.h>
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#endif
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#else
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#include <GLES3/gl3.h>
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#endif
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struct GBAVideoGLAffine {
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int16_t dx;
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int16_t dmx;
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int16_t dy;
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int16_t dmy;
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int32_t sx;
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int32_t sy;
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};
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struct GBAVideoGLBackground {
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GLuint fbo;
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GLuint tex;
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unsigned index;
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int enabled;
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unsigned priority;
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uint32_t charBase;
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int mosaic;
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int multipalette;
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uint32_t screenBase;
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int overflow;
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int size;
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int target1;
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int target2;
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uint16_t x;
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uint16_t y;
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int32_t refx;
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int32_t refy;
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struct GBAVideoGLAffine affine;
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GLint scanlineAffine[GBA_VIDEO_VERTICAL_PIXELS * 4];
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GLint scanlineOffset[GBA_VIDEO_VERTICAL_PIXELS];
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};
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enum {
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GBA_GL_FBO_OBJ = 0,
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GBA_GL_FBO_BACKDROP,
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GBA_GL_FBO_WINDOW,
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GBA_GL_FBO_OUTPUT,
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GBA_GL_FBO_MAX
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};
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enum {
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GBA_GL_TEX_OBJ_COLOR = 0,
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GBA_GL_TEX_OBJ_FLAGS,
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GBA_GL_TEX_OBJ_DEPTH,
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GBA_GL_TEX_BACKDROP,
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GBA_GL_TEX_WINDOW,
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GBA_GL_TEX_MAX
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};
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enum {
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GBA_GL_VS_LOC = 0,
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GBA_GL_VS_MAXPOS,
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GBA_GL_BG_VRAM = 2,
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GBA_GL_BG_PALETTE,
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GBA_GL_BG_SCREENBASE,
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GBA_GL_BG_CHARBASE,
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GBA_GL_BG_SIZE,
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GBA_GL_BG_OFFSET,
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GBA_GL_BG_TRANSFORM,
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GBA_GL_BG_RANGE,
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GBA_GL_BG_MOSAIC,
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GBA_GL_OBJ_VRAM = 2,
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GBA_GL_OBJ_PALETTE,
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GBA_GL_OBJ_CHARBASE,
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GBA_GL_OBJ_STRIDE,
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GBA_GL_OBJ_LOCALPALETTE,
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GBA_GL_OBJ_INFLAGS,
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GBA_GL_OBJ_TRANSFORM,
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GBA_GL_OBJ_DIMS,
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GBA_GL_OBJ_OBJWIN,
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GBA_GL_OBJ_MOSAIC,
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GBA_GL_OBJ_CYCLES,
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GBA_GL_WIN_DISPCNT = 2,
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GBA_GL_WIN_BLEND,
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GBA_GL_WIN_FLAGS,
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GBA_GL_WIN_WIN0,
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GBA_GL_WIN_WIN1,
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GBA_GL_FINALIZE_SCALE = 2,
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GBA_GL_FINALIZE_LAYERS,
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GBA_GL_FINALIZE_FLAGS,
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GBA_GL_FINALIZE_WINDOW,
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GBA_GL_FINALIZE_PALETTE,
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GBA_GL_FINALIZE_BACKDROP,
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GBA_GL_UNIFORM_MAX = 14
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};
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struct GBAVideoGLShader {
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GLuint program;
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GLuint vao;
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GLuint uniforms[GBA_GL_UNIFORM_MAX];
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};
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struct GBAVideoGLRenderer {
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struct GBAVideoRenderer d;
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uint32_t* temporaryBuffer;
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struct GBAVideoGLBackground bg[4];
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int oamMax;
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bool oamDirty;
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struct GBAVideoRendererSprite sprites[128];
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GLuint fbo[GBA_GL_FBO_MAX];
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GLuint layers[GBA_GL_TEX_MAX];
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GLuint vbo;
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GLuint outputTex;
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GLuint paletteTex;
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uint16_t shadowPalette[GBA_VIDEO_VERTICAL_PIXELS][512];
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int nextPalette;
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int paletteDirtyScanlines;
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bool paletteDirty;
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GLuint vramTex;
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unsigned vramDirty;
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uint16_t shadowRegs[0x30];
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uint64_t regsDirty;
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struct GBAVideoGLShader bgShader[6];
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struct GBAVideoGLShader objShader[3];
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struct GBAVideoGLShader windowShader;
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struct GBAVideoGLShader finalizeShader;
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GBARegisterDISPCNT dispcnt;
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unsigned target1Obj;
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unsigned target1Bd;
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unsigned target2Obj;
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unsigned target2Bd;
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enum GBAVideoBlendEffect blendEffect;
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uint16_t blda;
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uint16_t bldb;
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uint16_t bldy;
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GBAMosaicControl mosaic;
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struct GBAVideoGLWindowN {
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struct GBAVideoWindowRegion h;
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struct GBAVideoWindowRegion v;
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GBAWindowControl control;
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} winN[2];
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GLint winNHistory[2][GBA_VIDEO_VERTICAL_PIXELS * 4];
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GLint spriteCycles[GBA_VIDEO_VERTICAL_PIXELS];
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GBAWindowControl winout;
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GBAWindowControl objwin;
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int firstAffine;
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int firstY;
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int scale;
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};
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void GBAVideoGLRendererCreate(struct GBAVideoGLRenderer* renderer);
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void GBAVideoGLRendererSetScale(struct GBAVideoGLRenderer* renderer, int scale);
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#endif
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CXX_GUARD_END
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#endif
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