src/gba/renderers/gl.c (view raw)
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#include <mgba/internal/gba/renderers/gl.h>
7
8#if defined(BUILD_GLES2) || defined(BUILD_GLES3)
9
10#include <mgba/core/cache-set.h>
11#include <mgba/internal/arm/macros.h>
12#include <mgba/internal/gba/io.h>
13#include <mgba/internal/gba/renderers/cache-set.h>
14
15static void GBAVideoGLRendererInit(struct GBAVideoRenderer* renderer);
16static void GBAVideoGLRendererDeinit(struct GBAVideoRenderer* renderer);
17static void GBAVideoGLRendererReset(struct GBAVideoRenderer* renderer);
18static void GBAVideoGLRendererWriteVRAM(struct GBAVideoRenderer* renderer, uint32_t address);
19static void GBAVideoGLRendererWriteOAM(struct GBAVideoRenderer* renderer, uint32_t oam);
20static void GBAVideoGLRendererWritePalette(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
21static uint16_t GBAVideoGLRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
22static void GBAVideoGLRendererDrawScanline(struct GBAVideoRenderer* renderer, int y);
23static void GBAVideoGLRendererFinishFrame(struct GBAVideoRenderer* renderer);
24static void GBAVideoGLRendererGetPixels(struct GBAVideoRenderer* renderer, size_t* stride, const void** pixels);
25static void GBAVideoGLRendererPutPixels(struct GBAVideoRenderer* renderer, size_t stride, const void* pixels);
26
27static void GBAVideoGLRendererUpdateDISPCNT(struct GBAVideoGLRenderer* renderer);
28static void GBAVideoGLRendererWriteBGCNT(struct GBAVideoGLBackground* bg, uint16_t value);
29static void GBAVideoGLRendererWriteBGX_LO(struct GBAVideoGLBackground* bg, uint16_t value);
30static void GBAVideoGLRendererWriteBGX_HI(struct GBAVideoGLBackground* bg, uint16_t value);
31static void GBAVideoGLRendererWriteBGY_LO(struct GBAVideoGLBackground* bg, uint16_t value);
32static void GBAVideoGLRendererWriteBGY_HI(struct GBAVideoGLBackground* bg, uint16_t value);
33static void GBAVideoGLRendererWriteBLDCNT(struct GBAVideoGLRenderer* renderer, uint16_t value);
34
35static void GBAVideoGLRendererDrawSprite(struct GBAVideoGLRenderer* renderer, struct GBAObj* sprite, int y, int spriteY);
36static void GBAVideoGLRendererDrawBackgroundMode0(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y);
37static void GBAVideoGLRendererDrawBackgroundMode2(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y);
38static void GBAVideoGLRendererDrawBackgroundMode3(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y);
39static void GBAVideoGLRendererDrawBackgroundMode4(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y);
40static void GBAVideoGLRendererDrawBackgroundMode5(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y);
41static void GBAVideoGLRendererDrawWindow(struct GBAVideoGLRenderer* renderer, int y);
42
43static void _finalizeLayers(struct GBAVideoGLRenderer* renderer, int y);
44
45#define TEST_LAYER_ENABLED(X) !renderer->disableBG[X] && glRenderer->bg[X].enabled == 4
46
47struct GBAVideoGLUniform {
48 const char* name;
49 int type;
50};
51
52static const GLchar* const _gl3Header =
53 "#version 130\n";
54
55static const char* const _vertexShader =
56 "in vec2 position;\n"
57 "uniform ivec2 loc;\n"
58 "uniform ivec2 maxPos;\n"
59 "out vec2 texCoord;\n"
60
61 "void main() {\n"
62 " vec2 local = vec2(position.x, float(position.y * loc.x + loc.y) / abs(maxPos.y));\n"
63 " gl_Position = vec4((local * 2. - 1.) * sign(maxPos), 0., 1.);\n"
64 " texCoord = local * abs(maxPos);\n"
65 "}";
66
67static const char* const _renderTile16 =
68 "vec4 renderTile(int tile, int paletteId, ivec2 localCoord) {\n"
69 " int address = charBase + tile * 16 + (localCoord.x >> 2) + (localCoord.y << 1);\n"
70 " vec4 halfrow = texelFetch(vram, ivec2(address & 255, address >> 8), 0);\n"
71 " int entry = int(halfrow[3 - (localCoord.x & 3)] * 15.9);\n"
72 " vec4 color = texelFetch(palette, ivec2(entry, paletteId), 0);\n"
73 " if (entry == 0) {\n"
74 " discard;\n"
75 " }\n"
76 " color.a = 1;\n"
77 " return color;\n"
78 "}";
79
80static const char* const _renderTile256 =
81 "vec4 renderTile(int tile, int paletteId, ivec2 localCoord) {\n"
82 " int address = charBase + tile * 32 + (localCoord.x >> 1) + (localCoord.y << 2);\n"
83 " vec4 halfrow = texelFetch(vram, ivec2(address & 255, address >> 8), 0);\n"
84 " int entry = int(halfrow[3 - 2 * (localCoord.x & 1)] * 15.9);\n"
85 " int pal2 = int(halfrow[2 - 2 * (localCoord.x & 1)] * 15.9);\n"
86 " vec4 color = texelFetch(palette, ivec2(entry, pal2 + (paletteId & 16)), 0);\n"
87 " if ((pal2 | entry) == 0) {\n"
88 " discard;\n"
89 " }\n"
90 " color.a = 1.;\n"
91 " return color;\n"
92 "}";
93
94static const struct GBAVideoGLUniform _uniformsMode0[] = {
95 { "loc", GBA_GL_VS_LOC, },
96 { "maxPos", GBA_GL_VS_MAXPOS, },
97 { "vram", GBA_GL_BG_VRAM, },
98 { "palette", GBA_GL_BG_PALETTE, },
99 { "screenBase", GBA_GL_BG_SCREENBASE, },
100 { "charBase", GBA_GL_BG_CHARBASE, },
101 { "size", GBA_GL_BG_SIZE, },
102 { "offset", GBA_GL_BG_OFFSET, },
103 { "inflags", GBA_GL_BG_INFLAGS, },
104 { 0 }
105};
106
107static const char* const _renderMode0 =
108 "in vec2 texCoord;\n"
109 "uniform sampler2D vram;\n"
110 "uniform sampler2D palette;\n"
111 "uniform int screenBase;\n"
112 "uniform int charBase;\n"
113 "uniform int size;\n"
114 "uniform ivec2 offset;\n"
115 "uniform ivec4 inflags;\n"
116 "out vec4 color;\n"
117 "out vec4 flags;\n"
118 "const vec4 flagCoeff = vec4(32., 32., 16., 16.);\n"
119
120 "vec4 renderTile(int tile, int paletteId, ivec2 localCoord);\n"
121
122 "void main() {\n"
123 " ivec2 coord = ivec2(texCoord) + offset;\n"
124 " if ((size & 1) == 1) {\n"
125 " coord.y += coord.x & 256;\n"
126 " }\n"
127 " coord.x &= 255;\n"
128 " int mapAddress = screenBase + (coord.x >> 3) + (coord.y >> 3) * 32;\n"
129 " vec4 map = texelFetch(vram, ivec2(mapAddress & 255, mapAddress >> 8), 0);\n"
130 " int tileFlags = int(map.g * 15.9);\n"
131 " if ((tileFlags & 4) == 4) {\n"
132 " coord.x ^= 7;\n"
133 " }\n"
134 " if ((tileFlags & 8) == 8) {\n"
135 " coord.y ^= 7;\n"
136 " }\n"
137 " int tile = int(map.a * 15.9) + int(map.b * 15.9) * 16 + (tileFlags & 0x3) * 256;\n"
138 " color = renderTile(tile, int(map.r * 15.9), coord & 7);\n"
139 " flags = inflags / flagCoeff;\n"
140 "}";
141
142static const char* const _fetchTileOverflow =
143 "vec4 fetchTile(ivec2 coord) {\n"
144 " int sizeAdjusted = (0x8000 << size) - 1;\n"
145 " coord &= sizeAdjusted;\n"
146 " return renderTile(coord);\n"
147 "}";
148
149static const char* const _fetchTileNoOverflow =
150 "vec4 fetchTile(ivec2 coord) {\n"
151 " int sizeAdjusted = (0x8000 << size) - 1;\n"
152 " ivec2 outerCoord = coord & ~sizeAdjusted;\n"
153 " if ((outerCoord.x | outerCoord.y) != 0) {\n"
154 " discard;\n"
155 " }\n"
156 " return renderTile(coord);\n"
157 "}";
158
159static const struct GBAVideoGLUniform _uniformsMode2[] = {
160 { "loc", GBA_GL_VS_LOC, },
161 { "maxPos", GBA_GL_VS_MAXPOS, },
162 { "vram", GBA_GL_BG_VRAM, },
163 { "palette", GBA_GL_BG_PALETTE, },
164 { "screenBase", GBA_GL_BG_SCREENBASE, },
165 { "charBase", GBA_GL_BG_CHARBASE, },
166 { "size", GBA_GL_BG_SIZE, },
167 { "inflags", GBA_GL_BG_INFLAGS, },
168 { "offset", GBA_GL_BG_OFFSET, },
169 { "transform", GBA_GL_BG_TRANSFORM, },
170 { 0 }
171};
172
173static const char* const _renderMode2 =
174 "in vec2 texCoord;\n"
175 "uniform sampler2D vram;\n"
176 "uniform sampler2D palette;\n"
177 "uniform int screenBase;\n"
178 "uniform int charBase;\n"
179 "uniform int size;\n"
180 "uniform ivec4 inflags;\n"
181 "uniform ivec2[4] offset;\n"
182 "uniform ivec2[4] transform;\n"
183 "out vec4 color;\n"
184 "out vec4 flags;\n"
185 "const vec4 flagCoeff = vec4(32., 32., 16., 16.);\n"
186 "precision highp float;\n"
187 "precision highp int;\n"
188
189 "vec4 fetchTile(ivec2 coord);\n"
190
191 "vec4 renderTile(ivec2 coord) {\n"
192 " int map = (coord.x >> 11) + (((coord.y >> 7) & 0x7F0) << size);\n"
193 " int mapAddress = screenBase + (map >> 1);\n"
194 " vec4 twomaps = texelFetch(vram, ivec2(mapAddress & 255, mapAddress >> 8), 0);\n"
195 " int tile = int(twomaps[3 - 2 * (map & 1)] * 15.9) + int(twomaps[2 - 2 * (map & 1)] * 15.9) * 16;\n"
196 " int address = charBase + tile * 32 + ((coord.x >> 9) & 3) + ((coord.y >> 6) & 0x1C);\n"
197 " vec4 halfrow = texelFetch(vram, ivec2(address & 255, address >> 8), 0);\n"
198 " int entry = int(halfrow[3 - ((coord.x >> 7) & 2)] * 15.9);\n"
199 " int pal2 = int(halfrow[2 - ((coord.x >> 7) & 2)] * 15.9);\n"
200 " vec4 color = texelFetch(palette, ivec2(entry, pal2), 0);\n"
201 " if ((pal2 | entry) == 0) {\n"
202 " discard;\n"
203 " }\n"
204 " color.a = 1.;\n"
205 " return color;\n"
206 "}\n"
207
208 "vec2 interpolate(ivec2 arr[4], float x) {\n"
209 " float x1m = 1. - x;\n"
210 " return x1m * x1m * x1m * arr[0] +"
211 " 3 * x1m * x1m * x * arr[1] +"
212 " 3 * x1m * x * x * arr[2] +"
213 " x * x * x * arr[3];\n"
214 "}\n"
215
216 "void main() {\n"
217 " float y = fract(texCoord.y);\n"
218 " float lin = 0.5 - y / ceil(y) * 0.25;\n"
219 " vec2 mixedTransform = interpolate(transform, lin);\n"
220 " vec2 mixedOffset = interpolate(offset, lin);\n"
221 " color = fetchTile(ivec2(mixedTransform * texCoord.x + mixedOffset));\n"
222 " flags = inflags / flagCoeff;\n"
223 "}";
224
225static const struct GBAVideoGLUniform _uniformsObj[] = {
226 { "loc", GBA_GL_VS_LOC, },
227 { "maxPos", GBA_GL_VS_MAXPOS, },
228 { "vram", GBA_GL_OBJ_VRAM, },
229 { "palette", GBA_GL_OBJ_PALETTE, },
230 { "charBase", GBA_GL_OBJ_CHARBASE, },
231 { "stride", GBA_GL_OBJ_STRIDE, },
232 { "localPalette", GBA_GL_OBJ_LOCALPALETTE, },
233 { "inflags", GBA_GL_OBJ_INFLAGS, },
234 { "transform", GBA_GL_OBJ_TRANSFORM, },
235 { "dims", GBA_GL_OBJ_DIMS, },
236 { "objwin", GBA_GL_OBJ_OBJWIN, },
237 { 0 }
238};
239
240static const char* const _renderObj =
241 "in vec2 texCoord;\n"
242 "uniform sampler2D vram;\n"
243 "uniform sampler2D palette;\n"
244 "uniform int charBase;\n"
245 "uniform int stride;\n"
246 "uniform int localPalette;\n"
247 "uniform ivec4 inflags;\n"
248 "uniform mat2x2 transform;\n"
249 "uniform ivec4 dims;\n"
250 "uniform vec3 objwin;\n"
251 "out vec4 color;\n"
252 "out vec4 flags;\n"
253 "out vec2 window;\n"
254 "const vec4 flagCoeff = vec4(32., 32., 16., 16.);\n"
255
256 "vec4 renderTile(int tile, int paletteId, ivec2 localCoord);\n"
257
258 "void main() {\n"
259 " ivec2 coord = ivec2(transform * (texCoord - dims.zw / 2) + dims.xy / 2);\n"
260 " if ((coord & ~(dims.xy - 1)) != ivec2(0, 0)) {\n"
261 " discard;\n"
262 " }\n"
263 " vec4 pix = renderTile((coord.x >> 3) + (coord.y >> 3) * stride, 16 + localPalette, coord & 7);\n"
264 " if (objwin.x > 0) {\n"
265 " pix.a = 0;\n"
266 " }\n"
267 " color = pix;\n"
268 " flags = inflags / flagCoeff;\n"
269 " window = objwin.yz;\n"
270 "}";
271
272static const struct GBAVideoGLUniform _uniformsFinalize[] = {
273 { "loc", GBA_GL_VS_LOC, },
274 { "maxPos", GBA_GL_VS_MAXPOS, },
275 { "scale", GBA_GL_FINALIZE_SCALE, },
276 { "layers", GBA_GL_FINALIZE_LAYERS, },
277 { "flags", GBA_GL_FINALIZE_FLAGS, },
278 { "window", GBA_GL_FINALIZE_WINDOW, },
279 { "backdrop", GBA_GL_FINALIZE_BACKDROP, },
280 { "backdropFlags", GBA_GL_FINALIZE_BACKDROPFLAGS, },
281 { 0 }
282};
283
284static const char* const _finalize =
285 "in vec2 texCoord;\n"
286 "uniform int scale;\n"
287 "uniform sampler2D layers[5];\n"
288 "uniform sampler2D flags[5];\n"
289 "uniform sampler2D window;\n"
290 "uniform vec4 backdrop;\n"
291 "uniform vec4 backdropFlags;\n"
292 "const vec4 flagCoeff = vec4(32., 32., 16., 16.);\n"
293 "out vec4 color;\n"
294
295 "void composite(vec4 pixel, ivec4 flags, inout vec4 topPixel, inout ivec4 topFlags, inout vec4 bottomPixel, inout ivec4 bottomFlags) {\n"
296 " if (pixel.a == 0) {\n"
297 " return;\n"
298 " }\n"
299 " if (flags.x >= topFlags.x) {\n"
300 " if (flags.x >= bottomFlags.x) {\n"
301 " return;\n"
302 " }\n"
303 " bottomFlags = flags;\n"
304 " bottomPixel = pixel;\n"
305 " } else {\n"
306 " bottomFlags = topFlags;\n"
307 " topFlags = flags;\n"
308 " bottomPixel = topPixel;\n"
309 " topPixel = pixel;\n"
310 " }\n"
311 "}\n"
312
313 "void main() {\n"
314 " ivec2 windowFlags = ivec2(texelFetch(window, ivec2(texCoord * scale), 0).xy * 32);\n"
315 " int layerWindow = windowFlags.x | (windowFlags.y << 4);\n"
316 " vec4 topPixel = backdrop;\n"
317 " vec4 bottomPixel = backdrop;\n"
318 " ivec4 topFlags = ivec4(backdropFlags * flagCoeff);\n"
319 " ivec4 bottomFlags = ivec4(backdropFlags * flagCoeff);\n"
320 " if ((layerWindow & 1) == 0) {\n"
321 " vec4 pix = texelFetch(layers[0], ivec2(texCoord * scale), 0);\n"
322 " ivec4 inflags = ivec4(texelFetch(flags[0], ivec2(texCoord * scale), 0) * flagCoeff);\n"
323 " composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
324 " }\n"
325 " if ((layerWindow & 2) == 0) {\n"
326 " vec4 pix = texelFetch(layers[1], ivec2(texCoord * scale), 0);\n"
327 " ivec4 inflags = ivec4(texelFetch(flags[1], ivec2(texCoord * scale), 0) * flagCoeff);\n"
328 " composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
329 " }\n"
330 " if ((layerWindow & 4) == 0) {\n"
331 " vec4 pix = texelFetch(layers[2], ivec2(texCoord * scale), 0);\n"
332 " ivec4 inflags = ivec4(texelFetch(flags[2], ivec2(texCoord * scale), 0) * flagCoeff);\n"
333 " composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
334 " }\n"
335 " if ((layerWindow & 8) == 0) {\n"
336 " vec4 pix = texelFetch(layers[3], ivec2(texCoord * scale), 0);\n"
337 " ivec4 inflags = ivec4(texelFetch(flags[3], ivec2(texCoord * scale), 0) * flagCoeff);\n"
338 " composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
339 " }\n"
340 " if ((layerWindow & 32) != 0) {\n"
341 " topFlags.y &= ~1;\n"
342 " }\n"
343 " if ((layerWindow & 16) == 0) {\n"
344 " vec4 pix = texelFetch(layers[4], ivec2(texCoord * scale), 0);\n"
345 " ivec4 inflags = ivec4(texelFetch(flags[4], ivec2(texCoord * scale), 0) * flagCoeff);\n"
346 " composite(pix, inflags, topPixel, topFlags, bottomPixel, bottomFlags);\n"
347 " }\n"
348 " if ((topFlags.y & 13) == 5) {\n"
349 " if ((bottomFlags.y & 2) == 2) {\n"
350 " topPixel *= topFlags.z / 16.;\n"
351 " topPixel += bottomPixel * bottomFlags.w / 16.;\n"
352 " }\n"
353 " } else if ((topFlags.y & 13) == 9) {\n"
354 " topPixel += (1. - topPixel) * topFlags.z / 16.;\n"
355 " } else if ((topFlags.y & 13) == 13) {\n"
356 " topPixel -= topPixel * topFlags.z / 16.;\n"
357 " }\n"
358 " color = topPixel;\n"
359 "}";
360
361static const GLint _vertices[] = {
362 0, 0,
363 0, 1,
364 1, 1,
365 1, 0,
366};
367
368void GBAVideoGLRendererCreate(struct GBAVideoGLRenderer* renderer) {
369 renderer->d.init = GBAVideoGLRendererInit;
370 renderer->d.reset = GBAVideoGLRendererReset;
371 renderer->d.deinit = GBAVideoGLRendererDeinit;
372 renderer->d.writeVideoRegister = GBAVideoGLRendererWriteVideoRegister;
373 renderer->d.writeVRAM = GBAVideoGLRendererWriteVRAM;
374 renderer->d.writeOAM = GBAVideoGLRendererWriteOAM;
375 renderer->d.writePalette = GBAVideoGLRendererWritePalette;
376 renderer->d.drawScanline = GBAVideoGLRendererDrawScanline;
377 renderer->d.finishFrame = GBAVideoGLRendererFinishFrame;
378 renderer->d.getPixels = GBAVideoGLRendererGetPixels;
379 renderer->d.putPixels = GBAVideoGLRendererPutPixels;
380
381 renderer->d.disableBG[0] = false;
382 renderer->d.disableBG[1] = false;
383 renderer->d.disableBG[2] = false;
384 renderer->d.disableBG[3] = false;
385 renderer->d.disableOBJ = false;
386
387 renderer->scale = 1;
388}
389
390void _compileShader(struct GBAVideoGLRenderer* glRenderer, struct GBAVideoGLShader* shader, const char** shaderBuffer, int shaderBufferLines, GLuint vs, const struct GBAVideoGLUniform* uniforms, char* log) {
391 GLuint program = glCreateProgram();
392 shader->program = program;
393
394 GLuint fs = glCreateShader(GL_FRAGMENT_SHADER);
395 glAttachShader(program, vs);
396 glAttachShader(program, fs);
397 glShaderSource(fs, shaderBufferLines, shaderBuffer, 0);
398 glCompileShader(fs);
399 glGetShaderInfoLog(fs, 1024, 0, log);
400 if (log[0]) {
401 mLOG(GBA_VIDEO, ERROR, "Fragment shader compilation failure: %s", log);
402 }
403 glLinkProgram(program);
404 glGetProgramInfoLog(program, 1024, 0, log);
405 if (log[0]) {
406 mLOG(GBA_VIDEO, ERROR, "Program link failure: %s", log);
407 }
408 glDeleteShader(fs);
409#ifndef BUILD_GLES3
410 glBindFragDataLocation(program, 0, "color");
411 glBindFragDataLocation(program, 1, "flags");
412#endif
413
414 glGenVertexArrays(1, &shader->vao);
415 glBindVertexArray(shader->vao);
416 glBindBuffer(GL_ARRAY_BUFFER, glRenderer->vbo);
417 GLuint positionLocation = glGetAttribLocation(program, "position");
418 glVertexAttribPointer(positionLocation, 2, GL_INT, GL_FALSE, 0, NULL);
419
420 size_t i;
421 for (i = 0; uniforms[i].name; ++i) {
422 shader->uniforms[uniforms[i].type] = glGetUniformLocation(program, uniforms[i].name);
423 }
424}
425
426static void _initFramebufferTexture(GLuint tex, GLenum format, GLenum attachment, int scale) {
427 glBindTexture(GL_TEXTURE_2D, tex);
428 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
429 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
430 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
431 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
432 glTexImage2D(GL_TEXTURE_2D, 0, format, GBA_VIDEO_HORIZONTAL_PIXELS * scale, GBA_VIDEO_VERTICAL_PIXELS * scale, 0, format, GL_UNSIGNED_BYTE, 0);
433 glFramebufferTexture2D(GL_FRAMEBUFFER, attachment, GL_TEXTURE_2D, tex, 0);
434}
435
436void GBAVideoGLRendererInit(struct GBAVideoRenderer* renderer) {
437 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
438 glGenFramebuffers(GBA_GL_FBO_MAX, glRenderer->fbo);
439 glGenTextures(GBA_GL_TEX_MAX, glRenderer->layers);
440
441 glGenTextures(1, &glRenderer->paletteTex);
442 glBindTexture(GL_TEXTURE_2D, glRenderer->paletteTex);
443 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
444 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
445
446 glGenTextures(1, &glRenderer->vramTex);
447 glBindTexture(GL_TEXTURE_2D, glRenderer->vramTex);
448 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
449 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
450 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA4, 256, 192, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, 0);
451
452 glBindFramebuffer(GL_FRAMEBUFFER, glRenderer->fbo[GBA_GL_FBO_OBJ]);
453 _initFramebufferTexture(glRenderer->layers[GBA_GL_TEX_OBJ_COLOR], GL_RGBA, GL_COLOR_ATTACHMENT0, glRenderer->scale);
454 _initFramebufferTexture(glRenderer->layers[GBA_GL_TEX_OBJ_FLAGS], GL_RGBA, GL_COLOR_ATTACHMENT1, glRenderer->scale);
455
456 glBindFramebuffer(GL_FRAMEBUFFER, glRenderer->fbo[GBA_GL_FBO_WINDOW]);
457 _initFramebufferTexture(glRenderer->layers[GBA_GL_TEX_WINDOW], GL_RG, GL_COLOR_ATTACHMENT0, glRenderer->scale);
458
459 glBindFramebuffer(GL_FRAMEBUFFER, glRenderer->fbo[GBA_GL_FBO_OUTPUT]);
460 _initFramebufferTexture(glRenderer->outputTex, GL_RGB, GL_COLOR_ATTACHMENT0, glRenderer->scale);
461
462 glBindFramebuffer(GL_FRAMEBUFFER, 0);
463
464 glGenBuffers(1, &glRenderer->vbo);
465 glBindBuffer(GL_ARRAY_BUFFER, glRenderer->vbo);
466 glBufferData(GL_ARRAY_BUFFER, sizeof(_vertices), _vertices, GL_STATIC_DRAW);
467
468 int i;
469 for (i = 0; i < 4; ++i) {
470 struct GBAVideoGLBackground* bg = &glRenderer->bg[i];
471 bg->index = i;
472 bg->enabled = 0;
473 bg->priority = 0;
474 bg->charBase = 0;
475 bg->mosaic = 0;
476 bg->multipalette = 0;
477 bg->screenBase = 0;
478 bg->overflow = 0;
479 bg->size = 0;
480 bg->target1 = 0;
481 bg->target2 = 0;
482 bg->x = 0;
483 bg->y = 0;
484 bg->refx = 0;
485 bg->refy = 0;
486 bg->affine[0].dx = 256;
487 bg->affine[0].dmx = 0;
488 bg->affine[0].dy = 0;
489 bg->affine[0].dmy = 256;
490 bg->affine[0].sx = 0;
491 bg->affine[0].sy = 0;
492 glGenFramebuffers(1, &bg->fbo);
493 glGenTextures(1, &bg->tex);
494 glGenTextures(1, &bg->flags);
495 glBindFramebuffer(GL_FRAMEBUFFER, bg->fbo);
496 _initFramebufferTexture(bg->tex, GL_RGBA, GL_COLOR_ATTACHMENT0, glRenderer->scale);
497 _initFramebufferTexture(bg->flags, GL_RGBA, GL_COLOR_ATTACHMENT1, glRenderer->scale);
498 glBindFramebuffer(GL_FRAMEBUFFER, 0);
499 }
500
501 char log[1024];
502 const GLchar* shaderBuffer[8];
503 shaderBuffer[0] = _gl3Header;
504
505 GLuint vs = glCreateShader(GL_VERTEX_SHADER);
506 shaderBuffer[1] = _vertexShader;
507 glShaderSource(vs, 2, shaderBuffer, 0);
508 glCompileShader(vs);
509 glGetShaderInfoLog(vs, 1024, 0, log);
510 if (log[0]) {
511 mLOG(GBA_VIDEO, ERROR, "Vertex shader compilation failure: %s", log);
512 }
513
514 shaderBuffer[1] = _renderMode0;
515
516 shaderBuffer[2] = _renderTile16;
517 _compileShader(glRenderer, &glRenderer->bgShader[0], shaderBuffer, 3, vs, _uniformsMode0, log);
518
519 shaderBuffer[2] = _renderTile256;
520 _compileShader(glRenderer, &glRenderer->bgShader[1], shaderBuffer, 3, vs, _uniformsMode0, log);
521
522 shaderBuffer[1] = _renderMode2;
523
524 shaderBuffer[2] = _fetchTileOverflow;
525 _compileShader(glRenderer, &glRenderer->bgShader[2], shaderBuffer, 3, vs, _uniformsMode2, log);
526
527 shaderBuffer[2] = _fetchTileNoOverflow;
528 _compileShader(glRenderer, &glRenderer->bgShader[3], shaderBuffer, 3, vs, _uniformsMode2, log);
529
530 shaderBuffer[1] = _renderObj;
531
532 shaderBuffer[2] = _renderTile16;
533 _compileShader(glRenderer, &glRenderer->objShader[0], shaderBuffer, 3, vs, _uniformsObj, log);
534#ifndef BUILD_GLES3
535 glBindFragDataLocation(glRenderer->objShader[0].program, 2, "window");
536#endif
537
538 shaderBuffer[2] = _renderTile256;
539 _compileShader(glRenderer, &glRenderer->objShader[1], shaderBuffer, 3, vs, _uniformsObj, log);
540#ifndef BUILD_GLES3
541 glBindFragDataLocation(glRenderer->objShader[1].program, 2, "window");
542#endif
543
544 shaderBuffer[1] = _finalize;
545 _compileShader(glRenderer, &glRenderer->finalizeShader, shaderBuffer, 2, vs, _uniformsFinalize, log);
546
547 glBindVertexArray(0);
548 glDeleteShader(vs);
549
550 GBAVideoGLRendererReset(renderer);
551}
552
553void GBAVideoGLRendererDeinit(struct GBAVideoRenderer* renderer) {
554 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
555 glDeleteFramebuffers(GBA_GL_FBO_MAX, glRenderer->fbo);
556 glDeleteTextures(GBA_GL_TEX_MAX, glRenderer->layers);
557 glDeleteTextures(1, &glRenderer->paletteTex);
558 glDeleteTextures(1, &glRenderer->vramTex);
559}
560
561void GBAVideoGLRendererReset(struct GBAVideoRenderer* renderer) {
562 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
563
564 glRenderer->paletteDirty = true;
565 glRenderer->vramDirty = 0xFFFFFF;
566 glRenderer->firstAffine = -1;
567}
568
569void GBAVideoGLRendererWriteVRAM(struct GBAVideoRenderer* renderer, uint32_t address) {
570 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
571 glRenderer->vramDirty |= 1 << (address >> 12);
572}
573
574void GBAVideoGLRendererWriteOAM(struct GBAVideoRenderer* renderer, uint32_t oam) {
575 UNUSED(oam);
576 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
577 glRenderer->oamDirty = true;
578}
579
580void GBAVideoGLRendererWritePalette(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
581 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
582#ifdef BUILD_GLES3
583 glRenderer->shadowPalette[address >> 1] = (value & 0x3F) | ((value & 0x7FE0) << 1);
584#else
585 UNUSED(address);
586 UNUSED(value);
587#endif
588 glRenderer->paletteDirty = true;
589}
590
591uint16_t GBAVideoGLRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
592 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
593 if (renderer->cache) {
594 GBAVideoCacheWriteVideoRegister(renderer->cache, address, value);
595 }
596
597 switch (address) {
598 case REG_DISPCNT:
599 value &= 0xFFF7;
600 glRenderer->dispcnt = value;
601 GBAVideoGLRendererUpdateDISPCNT(glRenderer);
602 break;
603 case REG_BG0CNT:
604 value &= 0xDFFF;
605 GBAVideoGLRendererWriteBGCNT(&glRenderer->bg[0], value);
606 break;
607 case REG_BG1CNT:
608 value &= 0xDFFF;
609 GBAVideoGLRendererWriteBGCNT(&glRenderer->bg[1], value);
610 break;
611 case REG_BG2CNT:
612 value &= 0xFFFF;
613 GBAVideoGLRendererWriteBGCNT(&glRenderer->bg[2], value);
614 break;
615 case REG_BG3CNT:
616 value &= 0xFFFF;
617 GBAVideoGLRendererWriteBGCNT(&glRenderer->bg[3], value);
618 break;
619 case REG_BG0HOFS:
620 value &= 0x01FF;
621 glRenderer->bg[0].x = value;
622 break;
623 case REG_BG0VOFS:
624 value &= 0x01FF;
625 glRenderer->bg[0].y = value;
626 break;
627 case REG_BG1HOFS:
628 value &= 0x01FF;
629 glRenderer->bg[1].x = value;
630 break;
631 case REG_BG1VOFS:
632 value &= 0x01FF;
633 glRenderer->bg[1].y = value;
634 break;
635 case REG_BG2HOFS:
636 value &= 0x01FF;
637 glRenderer->bg[2].x = value;
638 break;
639 case REG_BG2VOFS:
640 value &= 0x01FF;
641 glRenderer->bg[2].y = value;
642 break;
643 case REG_BG3HOFS:
644 value &= 0x01FF;
645 glRenderer->bg[3].x = value;
646 break;
647 case REG_BG3VOFS:
648 value &= 0x01FF;
649 glRenderer->bg[3].y = value;
650 break;
651 case REG_BG2PA:
652 glRenderer->bg[2].affine[0].dx = value;
653 break;
654 case REG_BG2PB:
655 glRenderer->bg[2].affine[0].dmx = value;
656 break;
657 case REG_BG2PC:
658 glRenderer->bg[2].affine[0].dy = value;
659 break;
660 case REG_BG2PD:
661 glRenderer->bg[2].affine[0].dmy = value;
662 break;
663 case REG_BG2X_LO:
664 GBAVideoGLRendererWriteBGX_LO(&glRenderer->bg[2], value);
665 break;
666 case REG_BG2X_HI:
667 GBAVideoGLRendererWriteBGX_HI(&glRenderer->bg[2], value);
668 break;
669 case REG_BG2Y_LO:
670 GBAVideoGLRendererWriteBGY_LO(&glRenderer->bg[2], value);
671 break;
672 case REG_BG2Y_HI:
673 GBAVideoGLRendererWriteBGY_HI(&glRenderer->bg[2], value);
674 break;
675 case REG_BG3PA:
676 glRenderer->bg[3].affine[0].dx = value;
677 break;
678 case REG_BG3PB:
679 glRenderer->bg[3].affine[0].dmx = value;
680 break;
681 case REG_BG3PC:
682 glRenderer->bg[3].affine[0].dy = value;
683 break;
684 case REG_BG3PD:
685 glRenderer->bg[3].affine[0].dmy = value;
686 break;
687 case REG_BG3X_LO:
688 GBAVideoGLRendererWriteBGX_LO(&glRenderer->bg[3], value);
689 break;
690 case REG_BG3X_HI:
691 GBAVideoGLRendererWriteBGX_HI(&glRenderer->bg[3], value);
692 break;
693 case REG_BG3Y_LO:
694 GBAVideoGLRendererWriteBGY_LO(&glRenderer->bg[3], value);
695 break;
696 case REG_BG3Y_HI:
697 GBAVideoGLRendererWriteBGY_HI(&glRenderer->bg[3], value);
698 break;
699 case REG_BLDCNT:
700 GBAVideoGLRendererWriteBLDCNT(glRenderer, value);
701 value &= 0x3FFF;
702 break;
703 case REG_BLDALPHA:
704 glRenderer->blda = value & 0x1F;
705 if (glRenderer->blda > 0x10) {
706 glRenderer->blda = 0x10;
707 }
708 glRenderer->bldb = (value >> 8) & 0x1F;
709 if (glRenderer->bldb > 0x10) {
710 glRenderer->bldb = 0x10;
711 }
712 value &= 0x1F1F;
713 break;
714 case REG_BLDY:
715 value &= 0x1F;
716 if (value > 0x10) {
717 value = 0x10;
718 }
719 glRenderer->bldy = value;
720 break;
721 case REG_WIN0H:
722 glRenderer->winN[0].h.end = value;
723 glRenderer->winN[0].h.start = value >> 8;
724 if (glRenderer->winN[0].h.start > GBA_VIDEO_HORIZONTAL_PIXELS && glRenderer->winN[0].h.start > glRenderer->winN[0].h.end) {
725 glRenderer->winN[0].h.start = 0;
726 }
727 if (glRenderer->winN[0].h.end > GBA_VIDEO_HORIZONTAL_PIXELS) {
728 glRenderer->winN[0].h.end = GBA_VIDEO_HORIZONTAL_PIXELS;
729 if (glRenderer->winN[0].h.start > GBA_VIDEO_HORIZONTAL_PIXELS) {
730 glRenderer->winN[0].h.start = GBA_VIDEO_HORIZONTAL_PIXELS;
731 }
732 }
733 break;
734 case REG_WIN1H:
735 glRenderer->winN[1].h.end = value;
736 glRenderer->winN[1].h.start = value >> 8;
737 if (glRenderer->winN[1].h.start > GBA_VIDEO_HORIZONTAL_PIXELS && glRenderer->winN[1].h.start > glRenderer->winN[1].h.end) {
738 glRenderer->winN[1].h.start = 0;
739 }
740 if (glRenderer->winN[1].h.end > GBA_VIDEO_HORIZONTAL_PIXELS) {
741 glRenderer->winN[1].h.end = GBA_VIDEO_HORIZONTAL_PIXELS;
742 if (glRenderer->winN[1].h.start > GBA_VIDEO_HORIZONTAL_PIXELS) {
743 glRenderer->winN[1].h.start = GBA_VIDEO_HORIZONTAL_PIXELS;
744 }
745 }
746 break;
747 case REG_WIN0V:
748 glRenderer->winN[0].v.end = value;
749 glRenderer->winN[0].v.start = value >> 8;
750 if (glRenderer->winN[0].v.start > GBA_VIDEO_VERTICAL_PIXELS && glRenderer->winN[0].v.start > glRenderer->winN[0].v.end) {
751 glRenderer->winN[0].v.start = 0;
752 }
753 if (glRenderer->winN[0].v.end > GBA_VIDEO_VERTICAL_PIXELS) {
754 glRenderer->winN[0].v.end = GBA_VIDEO_VERTICAL_PIXELS;
755 if (glRenderer->winN[0].v.start > GBA_VIDEO_VERTICAL_PIXELS) {
756 glRenderer->winN[0].v.start = GBA_VIDEO_VERTICAL_PIXELS;
757 }
758 }
759 break;
760 case REG_WIN1V:
761 glRenderer->winN[1].v.end = value;
762 glRenderer->winN[1].v.start = value >> 8;
763 if (glRenderer->winN[1].v.start > GBA_VIDEO_VERTICAL_PIXELS && glRenderer->winN[1].v.start > glRenderer->winN[1].v.end) {
764 glRenderer->winN[1].v.start = 0;
765 }
766 if (glRenderer->winN[1].v.end > GBA_VIDEO_VERTICAL_PIXELS) {
767 glRenderer->winN[1].v.end = GBA_VIDEO_VERTICAL_PIXELS;
768 if (glRenderer->winN[1].v.start > GBA_VIDEO_VERTICAL_PIXELS) {
769 glRenderer->winN[1].v.start = GBA_VIDEO_VERTICAL_PIXELS;
770 }
771 }
772 break;
773 case REG_WININ:
774 value &= 0x3F3F;
775 glRenderer->winN[0].control = value;
776 glRenderer->winN[1].control = value >> 8;
777 break;
778 case REG_WINOUT:
779 value &= 0x3F3F;
780 glRenderer->winout = value;
781 glRenderer->objwin = value >> 8;
782 break;
783 case REG_MOSAIC:
784 glRenderer->mosaic = value;
785 break;
786 default:
787 break;
788 }
789 return value;
790}
791
792void GBAVideoGLRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
793 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
794 if (glRenderer->paletteDirty) {
795 glBindTexture(GL_TEXTURE_2D, glRenderer->paletteTex);
796#ifdef BUILD_GLES3
797 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB565, 16, 32, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_6_5, glRenderer->shadowPalette);
798#else
799 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB5_A1, 16, 32, 0, GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, glRenderer->d.palette);
800#endif
801 glRenderer->paletteDirty = false;
802 }
803 int i;
804 for (i = 0; i < 24; ++i) {
805 if (!(glRenderer->vramDirty & (1 << i))) {
806 continue;
807 }
808 // TODO: PBOs
809 glBindTexture(GL_TEXTURE_2D, glRenderer->vramTex);
810 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 8 * i, 256, 8, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, &glRenderer->d.vram[2048 * i]);
811 }
812 glRenderer->vramDirty = 0;
813
814 if (y == 0) {
815 glDisable(GL_SCISSOR_TEST);
816 glClearColor(0, 0, 0, 0);
817 glDrawBuffers(1, (GLenum[]) { GL_COLOR_ATTACHMENT3 });
818 glClear(GL_COLOR_BUFFER_BIT);
819
820 glBindFramebuffer(GL_FRAMEBUFFER, glRenderer->fbo[GBA_GL_FBO_OBJ]);
821 glDrawBuffers(2, (GLenum[]) { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 });
822 glClear(GL_COLOR_BUFFER_BIT);
823
824 for (i = 0; i < 4; ++i) {
825 glBindFramebuffer(GL_FRAMEBUFFER, glRenderer->bg[i].fbo);
826 glDrawBuffers(2, (GLenum[]) { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 });
827 glClear(GL_COLOR_BUFFER_BIT);
828 }
829 glDrawBuffers(1, (GLenum[]) { GL_COLOR_ATTACHMENT0 });
830 }
831 glEnable(GL_SCISSOR_TEST);
832
833 if (GBARegisterDISPCNTGetMode(glRenderer->dispcnt) != 0) {
834 if (glRenderer->firstAffine < 0) {
835 memcpy(&glRenderer->bg[2].affine[3], &glRenderer->bg[2].affine[0], sizeof(struct GBAVideoGLAffine));
836 memcpy(&glRenderer->bg[3].affine[3], &glRenderer->bg[3].affine[0], sizeof(struct GBAVideoGLAffine));
837 memcpy(&glRenderer->bg[2].affine[2], &glRenderer->bg[2].affine[0], sizeof(struct GBAVideoGLAffine));
838 memcpy(&glRenderer->bg[3].affine[2], &glRenderer->bg[3].affine[0], sizeof(struct GBAVideoGLAffine));
839 memcpy(&glRenderer->bg[2].affine[1], &glRenderer->bg[2].affine[0], sizeof(struct GBAVideoGLAffine));
840 memcpy(&glRenderer->bg[3].affine[1], &glRenderer->bg[3].affine[0], sizeof(struct GBAVideoGLAffine));
841 glRenderer->firstAffine = y;
842 } else if (y - glRenderer->firstAffine == 1) {
843 memcpy(&glRenderer->bg[2].affine[1], &glRenderer->bg[2].affine[0], sizeof(struct GBAVideoGLAffine));
844 memcpy(&glRenderer->bg[3].affine[1], &glRenderer->bg[3].affine[0], sizeof(struct GBAVideoGLAffine));
845 }
846 } else {
847 glRenderer->firstAffine = -1;
848 }
849
850 GBAVideoGLRendererDrawWindow(glRenderer, y);
851 if (GBARegisterDISPCNTIsObjEnable(glRenderer->dispcnt) && !glRenderer->d.disableOBJ) {
852 if (glRenderer->oamDirty) {
853 glRenderer->oamMax = GBAVideoRendererCleanOAM(glRenderer->d.oam->obj, glRenderer->sprites, 0);
854 glRenderer->oamDirty = false;
855 }
856 int i;
857 for (i = glRenderer->oamMax; i--;) {
858 struct GBAVideoRendererSprite* sprite = &glRenderer->sprites[i];
859 if ((y < sprite->y && (sprite->endY - 256 < 0 || y >= sprite->endY - 256)) || y >= sprite->endY) {
860 continue;
861 }
862
863 GBAVideoGLRendererDrawSprite(glRenderer, &sprite->obj, y, sprite->y);
864 }
865 }
866
867 if (TEST_LAYER_ENABLED(0) && GBARegisterDISPCNTGetMode(glRenderer->dispcnt) < 2) {
868 GBAVideoGLRendererDrawBackgroundMode0(glRenderer, &glRenderer->bg[0], y);
869 }
870 if (TEST_LAYER_ENABLED(1) && GBARegisterDISPCNTGetMode(glRenderer->dispcnt) < 2) {
871 GBAVideoGLRendererDrawBackgroundMode0(glRenderer, &glRenderer->bg[1], y);
872 }
873 if (TEST_LAYER_ENABLED(2)) {
874 switch (GBARegisterDISPCNTGetMode(glRenderer->dispcnt)) {
875 case 0:
876 GBAVideoGLRendererDrawBackgroundMode0(glRenderer, &glRenderer->bg[2], y);
877 break;
878 case 1:
879 case 2:
880 GBAVideoGLRendererDrawBackgroundMode2(glRenderer, &glRenderer->bg[2], y);
881 break;
882 case 3:
883 //GBAVideoGLRendererDrawBackgroundMode3(glRenderer, &glRenderer->bg[2], y);
884 break;
885 case 4:
886 //GBAVideoGLRendererDrawBackgroundMode4(glRenderer, &glRenderer->bg[2], y);
887 break;
888 case 5:
889 //GBAVideoGLRendererDrawBackgroundMode5(glRenderer, &glRenderer->bg[2], y);
890 break;
891 }
892 }
893 if (TEST_LAYER_ENABLED(3)) {
894 switch (GBARegisterDISPCNTGetMode(glRenderer->dispcnt)) {
895 case 0:
896 GBAVideoGLRendererDrawBackgroundMode0(glRenderer, &glRenderer->bg[3], y);
897 break;
898 case 2:
899 GBAVideoGLRendererDrawBackgroundMode2(glRenderer, &glRenderer->bg[3], y);
900 break;
901 }
902 }
903 _finalizeLayers(glRenderer, y);
904
905 if (GBARegisterDISPCNTGetMode(glRenderer->dispcnt) != 0) {
906 memcpy(&glRenderer->bg[2].affine[3], &glRenderer->bg[2].affine[2], sizeof(struct GBAVideoGLAffine));
907 memcpy(&glRenderer->bg[3].affine[3], &glRenderer->bg[3].affine[2], sizeof(struct GBAVideoGLAffine));
908 memcpy(&glRenderer->bg[2].affine[2], &glRenderer->bg[2].affine[1], sizeof(struct GBAVideoGLAffine));
909 memcpy(&glRenderer->bg[3].affine[2], &glRenderer->bg[3].affine[1], sizeof(struct GBAVideoGLAffine));
910 memcpy(&glRenderer->bg[2].affine[1], &glRenderer->bg[2].affine[0], sizeof(struct GBAVideoGLAffine));
911 memcpy(&glRenderer->bg[3].affine[1], &glRenderer->bg[3].affine[0], sizeof(struct GBAVideoGLAffine));
912
913 glRenderer->bg[2].affine[0].sx += glRenderer->bg[2].affine[0].dmx;
914 glRenderer->bg[2].affine[0].sy += glRenderer->bg[2].affine[0].dmy;
915 glRenderer->bg[3].affine[0].sx += glRenderer->bg[3].affine[0].dmx;
916 glRenderer->bg[3].affine[0].sy += glRenderer->bg[3].affine[0].dmy;
917 }
918}
919
920void GBAVideoGLRendererFinishFrame(struct GBAVideoRenderer* renderer) {
921 struct GBAVideoGLRenderer* glRenderer = (struct GBAVideoGLRenderer*) renderer;
922 glRenderer->firstAffine = -1;
923 glRenderer->bg[2].affine[0].sx = glRenderer->bg[2].refx;
924 glRenderer->bg[2].affine[0].sy = glRenderer->bg[2].refy;
925 glRenderer->bg[3].affine[0].sx = glRenderer->bg[3].refx;
926 glRenderer->bg[3].affine[0].sy = glRenderer->bg[3].refy;
927 glFlush();
928}
929
930void GBAVideoGLRendererGetPixels(struct GBAVideoRenderer* renderer, size_t* stride, const void** pixels) {
931
932}
933
934void GBAVideoGLRendererPutPixels(struct GBAVideoRenderer* renderer, size_t stride, const void* pixels) {
935
936}
937
938static void _enableBg(struct GBAVideoGLRenderer* renderer, int bg, bool active) {
939 int wasActive = renderer->bg[bg].enabled;
940 if (!active) {
941 renderer->bg[bg].enabled = 0;
942 } else if (!wasActive && active) {
943 /*if (renderer->nextY == 0 || GBARegisterDISPCNTGetMode(renderer->dispcnt) > 2) {
944 // TODO: Investigate in more depth how switching background works in different modes
945 renderer->bg[bg].enabled = 4;
946 } else {
947 renderer->bg[bg].enabled = 1;
948 }*/
949 renderer->bg[bg].enabled = 4;
950 }
951}
952
953static void GBAVideoGLRendererUpdateDISPCNT(struct GBAVideoGLRenderer* renderer) {
954 _enableBg(renderer, 0, GBARegisterDISPCNTGetBg0Enable(renderer->dispcnt));
955 _enableBg(renderer, 1, GBARegisterDISPCNTGetBg1Enable(renderer->dispcnt));
956 _enableBg(renderer, 2, GBARegisterDISPCNTGetBg2Enable(renderer->dispcnt));
957 _enableBg(renderer, 3, GBARegisterDISPCNTGetBg3Enable(renderer->dispcnt));
958}
959
960static void GBAVideoGLRendererWriteBGCNT(struct GBAVideoGLBackground* bg, uint16_t value) {
961 bg->priority = GBARegisterBGCNTGetPriority(value);
962 bg->charBase = GBARegisterBGCNTGetCharBase(value) << 13;
963 bg->mosaic = GBARegisterBGCNTGetMosaic(value);
964 bg->multipalette = GBARegisterBGCNTGet256Color(value);
965 bg->screenBase = GBARegisterBGCNTGetScreenBase(value) << 10;
966 bg->overflow = GBARegisterBGCNTGetOverflow(value);
967 bg->size = GBARegisterBGCNTGetSize(value);
968}
969
970static void GBAVideoGLRendererWriteBGX_LO(struct GBAVideoGLBackground* bg, uint16_t value) {
971 bg->refx = (bg->refx & 0xFFFF0000) | value;
972 bg->affine[0].sx = bg->refx;
973}
974
975static void GBAVideoGLRendererWriteBGX_HI(struct GBAVideoGLBackground* bg, uint16_t value) {
976 bg->refx = (bg->refx & 0x0000FFFF) | (value << 16);
977 bg->refx <<= 4;
978 bg->refx >>= 4;
979 bg->affine[0].sx = bg->refx;
980}
981
982static void GBAVideoGLRendererWriteBGY_LO(struct GBAVideoGLBackground* bg, uint16_t value) {
983 bg->refy = (bg->refy & 0xFFFF0000) | value;
984 bg->affine[0].sy = bg->refy;
985}
986
987static void GBAVideoGLRendererWriteBGY_HI(struct GBAVideoGLBackground* bg, uint16_t value) {
988 bg->refy = (bg->refy & 0x0000FFFF) | (value << 16);
989 bg->refy <<= 4;
990 bg->refy >>= 4;
991 bg->affine[0].sy = bg->refy;
992}
993
994static void GBAVideoGLRendererWriteBLDCNT(struct GBAVideoGLRenderer* renderer, uint16_t value) {
995 renderer->bg[0].target1 = GBARegisterBLDCNTGetTarget1Bg0(value);
996 renderer->bg[1].target1 = GBARegisterBLDCNTGetTarget1Bg1(value);
997 renderer->bg[2].target1 = GBARegisterBLDCNTGetTarget1Bg2(value);
998 renderer->bg[3].target1 = GBARegisterBLDCNTGetTarget1Bg3(value);
999 renderer->bg[0].target2 = GBARegisterBLDCNTGetTarget2Bg0(value);
1000 renderer->bg[1].target2 = GBARegisterBLDCNTGetTarget2Bg1(value);
1001 renderer->bg[2].target2 = GBARegisterBLDCNTGetTarget2Bg2(value);
1002 renderer->bg[3].target2 = GBARegisterBLDCNTGetTarget2Bg3(value);
1003
1004 renderer->blendEffect = GBARegisterBLDCNTGetEffect(value);
1005 renderer->target1Obj = GBARegisterBLDCNTGetTarget1Obj(value);
1006 renderer->target1Bd = GBARegisterBLDCNTGetTarget1Bd(value);
1007 renderer->target2Obj = GBARegisterBLDCNTGetTarget2Obj(value);
1008 renderer->target2Bd = GBARegisterBLDCNTGetTarget2Bd(value);
1009}
1010
1011void _finalizeLayers(struct GBAVideoGLRenderer* renderer, int y) {
1012 const GLuint* uniforms = renderer->finalizeShader.uniforms;
1013 glBindFramebuffer(GL_FRAMEBUFFER, renderer->fbo[GBA_GL_FBO_OUTPUT]);
1014 glViewport(0, 0, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, GBA_VIDEO_VERTICAL_PIXELS * renderer->scale);
1015 glScissor(0, y * renderer->scale, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, renderer->scale);
1016 glUseProgram(renderer->finalizeShader.program);
1017 glBindVertexArray(renderer->finalizeShader.vao);
1018 glActiveTexture(GL_TEXTURE0);
1019 glBindTexture(GL_TEXTURE_2D, renderer->layers[GBA_GL_TEX_WINDOW]);
1020 glActiveTexture(GL_TEXTURE0 + 1);
1021 glBindTexture(GL_TEXTURE_2D, renderer->layers[GBA_GL_TEX_OBJ_COLOR]);
1022 glActiveTexture(GL_TEXTURE0 + 2);
1023 glBindTexture(GL_TEXTURE_2D, renderer->layers[GBA_GL_TEX_OBJ_FLAGS]);
1024 glActiveTexture(GL_TEXTURE0 + 3);
1025 glBindTexture(GL_TEXTURE_2D, renderer->bg[0].tex);
1026 glActiveTexture(GL_TEXTURE0 + 4);
1027 glBindTexture(GL_TEXTURE_2D, renderer->bg[0].flags);
1028 glActiveTexture(GL_TEXTURE0 + 5);
1029 glBindTexture(GL_TEXTURE_2D, renderer->bg[1].tex);
1030 glActiveTexture(GL_TEXTURE0 + 6);
1031 glBindTexture(GL_TEXTURE_2D, renderer->bg[1].flags);
1032 glActiveTexture(GL_TEXTURE0 + 7);
1033 glBindTexture(GL_TEXTURE_2D, renderer->bg[2].tex);
1034 glActiveTexture(GL_TEXTURE0 + 8);
1035 glBindTexture(GL_TEXTURE_2D, renderer->bg[2].flags);
1036 glActiveTexture(GL_TEXTURE0 + 9);
1037 glBindTexture(GL_TEXTURE_2D, renderer->bg[3].tex);
1038 glActiveTexture(GL_TEXTURE0 + 10);
1039 glBindTexture(GL_TEXTURE_2D, renderer->bg[3].flags);
1040
1041 uint32_t backdrop = M_RGB5_TO_RGB8(renderer->d.palette[0]);
1042 glUniform2i(uniforms[GBA_GL_VS_LOC], 1, y);
1043 glUniform2i(uniforms[GBA_GL_VS_MAXPOS], GBA_VIDEO_HORIZONTAL_PIXELS, GBA_VIDEO_VERTICAL_PIXELS);
1044 glUniform1i(uniforms[GBA_GL_FINALIZE_SCALE], renderer->scale);
1045 glUniform1iv(uniforms[GBA_GL_FINALIZE_LAYERS], 5, (GLint[]) { 3, 5, 7, 9, 1 });
1046 glUniform1iv(uniforms[GBA_GL_FINALIZE_FLAGS], 5, (GLint[]) { 4, 6, 8, 10, 2 });
1047 glUniform1i(uniforms[GBA_GL_FINALIZE_WINDOW], 0);
1048 glUniform4f(uniforms[GBA_GL_FINALIZE_BACKDROP], ((backdrop >> 16) & 0xFF) / 256., ((backdrop >> 8) & 0xFF) / 256., (backdrop & 0xFF) / 256., 0.f);
1049 glUniform4f(uniforms[GBA_GL_FINALIZE_BACKDROPFLAGS], 1, (renderer->target1Bd | (renderer->target2Bd * 2) | (renderer->blendEffect * 4)) / 32.f,
1050 (renderer->blendEffect == BLEND_ALPHA ? renderer->blda : renderer->bldy) / 16.f, renderer->bldb / 16.f);
1051 glEnableVertexAttribArray(0);
1052 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1053 glBindFramebuffer(GL_FRAMEBUFFER, 0);
1054}
1055
1056void GBAVideoGLRendererDrawSprite(struct GBAVideoGLRenderer* renderer, struct GBAObj* sprite, int y, int spriteY) {
1057 int width = GBAVideoObjSizes[GBAObjAttributesAGetShape(sprite->a) * 4 + GBAObjAttributesBGetSize(sprite->b)][0];
1058 int height = GBAVideoObjSizes[GBAObjAttributesAGetShape(sprite->a) * 4 + GBAObjAttributesBGetSize(sprite->b)][1];
1059 int32_t x = (uint32_t) GBAObjAttributesBGetX(sprite->b) << 23;
1060 x >>= 23;
1061
1062 int align = GBAObjAttributesAIs256Color(sprite->a) && !GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt);
1063 unsigned charBase = (BASE_TILE >> 1) + (GBAObjAttributesCGetTile(sprite->c) & ~align) * 0x10;
1064 int stride = GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? (width >> 3) : (0x20 >> GBAObjAttributesAGet256Color(sprite->a));
1065
1066 if (spriteY + height >= 256) {
1067 spriteY -= 256;
1068 }
1069
1070 if (!GBAObjAttributesAIsTransformed(sprite->a) && GBAObjAttributesBIsVFlip(sprite->b)) {
1071 spriteY = (y - height) + (y - spriteY) + 1;
1072 }
1073
1074 int totalWidth = width;
1075 int totalHeight = height;
1076 if (GBAObjAttributesAIsTransformed(sprite->a) && GBAObjAttributesAIsDoubleSize(sprite->a)) {
1077 totalWidth <<= 1;
1078 totalHeight <<= 1;
1079 }
1080
1081 enum GBAVideoBlendEffect blendEffect = GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT ? BLEND_ALPHA : renderer->blendEffect;
1082
1083 const struct GBAVideoGLShader* shader = &renderer->objShader[GBAObjAttributesAGet256Color(sprite->a)];
1084 const GLuint* uniforms = shader->uniforms;
1085 glBindFramebuffer(GL_FRAMEBUFFER, renderer->fbo[GBA_GL_FBO_OBJ]);
1086 glViewport(x * renderer->scale, spriteY * renderer->scale, totalWidth * renderer->scale, totalHeight * renderer->scale);
1087 glScissor(x * renderer->scale, y * renderer->scale, totalWidth * renderer->scale, renderer->scale);
1088 glUseProgram(shader->program);
1089 glBindVertexArray(shader->vao);
1090 glActiveTexture(GL_TEXTURE0);
1091 glBindTexture(GL_TEXTURE_2D, renderer->vramTex);
1092 glActiveTexture(GL_TEXTURE0 + 1);
1093 glBindTexture(GL_TEXTURE_2D, renderer->paletteTex);
1094 glUniform2i(uniforms[GBA_GL_VS_LOC], 1, y - spriteY);
1095 glUniform2i(uniforms[GBA_GL_VS_MAXPOS], (GBAObjAttributesBIsHFlip(sprite->b) && !GBAObjAttributesAIsTransformed(sprite->a)) ? -totalWidth : totalWidth, totalHeight);
1096 glUniform1i(uniforms[GBA_GL_OBJ_VRAM], 0);
1097 glUniform1i(uniforms[GBA_GL_OBJ_PALETTE], 1);
1098 glUniform1i(uniforms[GBA_GL_OBJ_CHARBASE], charBase);
1099 glUniform1i(uniforms[GBA_GL_OBJ_STRIDE], stride);
1100 glUniform1i(uniforms[GBA_GL_OBJ_LOCALPALETTE], GBAObjAttributesCGetPalette(sprite->c));
1101 glUniform4i(uniforms[GBA_GL_OBJ_INFLAGS], GBAObjAttributesCGetPriority(sprite->c) << 3,
1102 (renderer->target1Obj || GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT) | (renderer->target2Obj * 2) | (blendEffect * 4),
1103 blendEffect == BLEND_ALPHA ? renderer->blda : renderer->bldy, renderer->bldb);
1104 if (GBAObjAttributesAIsTransformed(sprite->a)) {
1105 struct GBAOAMMatrix mat;
1106 LOAD_16(mat.a, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].a);
1107 LOAD_16(mat.b, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].b);
1108 LOAD_16(mat.c, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].c);
1109 LOAD_16(mat.d, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].d);
1110
1111 glUniformMatrix2fv(uniforms[GBA_GL_OBJ_TRANSFORM], 1, GL_FALSE, (GLfloat[]) { mat.a / 256.f, mat.c / 256.f, mat.b / 256.f, mat.d / 256.f });
1112 } else {
1113 glUniformMatrix2fv(uniforms[GBA_GL_OBJ_TRANSFORM], 1, GL_FALSE, (GLfloat[]) { 1.f, 0, 0, 1.f });
1114 }
1115 glUniform4i(uniforms[GBA_GL_OBJ_DIMS], width, height, totalWidth, totalHeight);
1116 if (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_OBJWIN) {
1117 int window = ~renderer->objwin & 0xFF;
1118 glUniform3f(uniforms[GBA_GL_OBJ_OBJWIN], 1, (window & 0xF) / 32.f, (window >> 4) / 32.f);
1119 glDrawBuffers(3, (GLenum[]) { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 });
1120 } else {
1121 glUniform3f(uniforms[GBA_GL_OBJ_OBJWIN], 0, 0, 0);
1122 glDrawBuffers(2, (GLenum[]) { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 });
1123 }
1124 glEnableVertexAttribArray(0);
1125 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1126 glDrawBuffers(1, (GLenum[]) { GL_COLOR_ATTACHMENT0 });
1127}
1128
1129void GBAVideoGLRendererDrawBackgroundMode0(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y) {
1130 int inY = y + background->y;
1131 int yBase = inY & 0xFF;
1132 if (background->size == 2) {
1133 yBase += inY & 0x100;
1134 } else if (background->size == 3) {
1135 yBase += (inY & 0x100) << 1;
1136 }
1137
1138 const struct GBAVideoGLShader* shader = &renderer->bgShader[background->multipalette ? 1 : 0];
1139 const GLuint* uniforms = shader->uniforms;
1140 glBindFramebuffer(GL_FRAMEBUFFER, background->fbo);
1141 glViewport(0, 0, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, GBA_VIDEO_VERTICAL_PIXELS * renderer->scale);
1142 glScissor(0, y * renderer->scale, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, renderer->scale);
1143 glUseProgram(shader->program);
1144 glBindVertexArray(shader->vao);
1145 glActiveTexture(GL_TEXTURE0);
1146 glBindTexture(GL_TEXTURE_2D, renderer->vramTex);
1147 glActiveTexture(GL_TEXTURE0 + 1);
1148 glBindTexture(GL_TEXTURE_2D, renderer->paletteTex);
1149 glUniform2i(uniforms[GBA_GL_VS_LOC], 1, y);
1150 glUniform2i(uniforms[GBA_GL_VS_MAXPOS], GBA_VIDEO_HORIZONTAL_PIXELS, GBA_VIDEO_VERTICAL_PIXELS);
1151 glUniform1i(uniforms[GBA_GL_BG_VRAM], 0);
1152 glUniform1i(uniforms[GBA_GL_BG_PALETTE], 1);
1153 glUniform1i(uniforms[GBA_GL_BG_SCREENBASE], background->screenBase);
1154 glUniform1i(uniforms[GBA_GL_BG_CHARBASE], background->charBase);
1155 glUniform1i(uniforms[GBA_GL_BG_SIZE], background->size);
1156 glUniform2i(uniforms[GBA_GL_BG_OFFSET], background->x, yBase - y);
1157 glUniform4i(uniforms[GBA_GL_BG_INFLAGS], (background->priority << 3) + (background->index << 1) + 1,
1158 background->target1 | (background->target2 * 2) | (renderer->blendEffect * 4),
1159 renderer->blendEffect == BLEND_ALPHA ? renderer->blda : renderer->bldy, renderer->bldb);
1160 glDrawBuffers(2, (GLenum[]) { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 });
1161 glEnableVertexAttribArray(0);
1162 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1163 glDrawBuffers(1, (GLenum[]) { GL_COLOR_ATTACHMENT0 });
1164}
1165
1166void GBAVideoGLRendererDrawBackgroundMode2(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y) {
1167 const struct GBAVideoGLShader* shader = &renderer->bgShader[background->overflow ? 2 : 3];
1168 const GLuint* uniforms = shader->uniforms;
1169 glBindFramebuffer(GL_FRAMEBUFFER, background->fbo);
1170 glViewport(0, 0, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, GBA_VIDEO_VERTICAL_PIXELS * renderer->scale);
1171 glScissor(0, y * renderer->scale, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, renderer->scale);
1172 glUseProgram(shader->program);
1173 glBindVertexArray(shader->vao);
1174 glActiveTexture(GL_TEXTURE0);
1175 glBindTexture(GL_TEXTURE_2D, renderer->vramTex);
1176 glActiveTexture(GL_TEXTURE0 + 1);
1177 glBindTexture(GL_TEXTURE_2D, renderer->paletteTex);
1178 glUniform2i(uniforms[GBA_GL_VS_LOC], 1, y);
1179 glUniform2i(uniforms[GBA_GL_VS_MAXPOS], GBA_VIDEO_HORIZONTAL_PIXELS, GBA_VIDEO_VERTICAL_PIXELS);
1180 glUniform1i(uniforms[GBA_GL_BG_VRAM], 0);
1181 glUniform1i(uniforms[GBA_GL_BG_PALETTE], 1);
1182 glUniform1i(uniforms[GBA_GL_BG_SCREENBASE], background->screenBase);
1183 glUniform1i(uniforms[GBA_GL_BG_CHARBASE], background->charBase);
1184 glUniform1i(uniforms[GBA_GL_BG_SIZE], background->size);
1185 glUniform4i(uniforms[GBA_GL_BG_INFLAGS], (background->priority << 3) + (background->index << 1) + 1,
1186 background->target1 | (background->target2 * 2) | (renderer->blendEffect * 4),
1187 renderer->blendEffect == BLEND_ALPHA ? renderer->blda : renderer->bldy, renderer->bldb);
1188 if (renderer->scale > 1) {
1189 glUniform2iv(uniforms[GBA_GL_BG_OFFSET], 4, (GLint[]) {
1190 background->affine[0].sx, background->affine[0].sy,
1191 background->affine[1].sx, background->affine[1].sy,
1192 background->affine[2].sx, background->affine[2].sy,
1193 background->affine[3].sx, background->affine[3].sy,
1194 });
1195 glUniform2iv(uniforms[GBA_GL_BG_TRANSFORM], 4, (GLint[]) {
1196 background->affine[0].dx, background->affine[0].dy,
1197 background->affine[1].dx, background->affine[1].dy,
1198 background->affine[2].dx, background->affine[2].dy,
1199 background->affine[3].dx, background->affine[3].dy,
1200 });
1201 } else {
1202 glUniform2iv(uniforms[GBA_GL_BG_OFFSET], 4, (GLint[]) {
1203 background->affine[0].sx, background->affine[0].sy,
1204 background->affine[0].sx, background->affine[0].sy,
1205 background->affine[0].sx, background->affine[0].sy,
1206 background->affine[0].sx, background->affine[0].sy,
1207 });
1208 glUniform2iv(uniforms[GBA_GL_BG_TRANSFORM], 4, (GLint[]) {
1209 background->affine[0].dx, background->affine[0].dy,
1210 background->affine[0].dx, background->affine[0].dy,
1211 background->affine[0].dx, background->affine[0].dy,
1212 background->affine[0].dx, background->affine[0].dy,
1213 });
1214 }
1215 glDrawBuffers(2, (GLenum[]) { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 });
1216 glEnableVertexAttribArray(0);
1217 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
1218 glDrawBuffers(1, (GLenum[]) { GL_COLOR_ATTACHMENT0 });
1219}
1220
1221static void _clearWindow(GBAWindowControl window, int start, int end, int y, int scale) {
1222 glScissor(start, y, end - start, scale);
1223 window = ~window & 0xFF;
1224 glClearColor((window & 0xF) / 32.f, (window >> 4) / 32.f, 0, 0);
1225 glClear(GL_COLOR_BUFFER_BIT);
1226}
1227
1228void GBAVideoGLRendererDrawWindow(struct GBAVideoGLRenderer* renderer, int y) {
1229 glBindFramebuffer(GL_FRAMEBUFFER, renderer->fbo[GBA_GL_FBO_WINDOW]);
1230 int dispcnt = ((renderer->dispcnt >> 8) & 0x1F) | 0x20;
1231 if (!(renderer->dispcnt & 0xE000)) {
1232 _clearWindow(dispcnt, 0, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, y * renderer->scale, renderer->scale);
1233 } else {
1234 _clearWindow(renderer->winout & dispcnt, 0, GBA_VIDEO_HORIZONTAL_PIXELS * renderer->scale, y * renderer->scale, renderer->scale);
1235 if (GBARegisterDISPCNTIsWin1Enable(renderer->dispcnt) && y >= renderer->winN[1].v.start && y < renderer->winN[1].v.end) {
1236 _clearWindow(renderer->winN[1].control & dispcnt, renderer->winN[1].h.start * renderer->scale, renderer->winN[1].h.end * renderer->scale, y * renderer->scale, renderer->scale);
1237 }
1238 if (GBARegisterDISPCNTIsWin0Enable(renderer->dispcnt) && y >= renderer->winN[0].v.start && y < renderer->winN[0].v.end) {
1239 _clearWindow(renderer->winN[0].control & dispcnt, renderer->winN[0].h.start * renderer->scale, renderer->winN[0].h.end * renderer->scale, y * renderer->scale, renderer->scale);
1240 }
1241 }
1242}
1243
1244#endif