src/gb/video.c (view raw)
1/* Copyright (c) 2013-2016 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/gb/video.h>
7
8#include <mgba/core/sync.h>
9#include <mgba/core/thread.h>
10#include <mgba/core/cache-set.h>
11#include <mgba/internal/gb/gb.h>
12#include <mgba/internal/gb/io.h>
13#include <mgba/internal/gb/renderers/cache-set.h>
14#include <mgba/internal/gb/serialize.h>
15#include <mgba/internal/sm83/sm83.h>
16
17#include <mgba-util/memory.h>
18
19mLOG_DEFINE_CATEGORY(GB_VIDEO, "GB Video", "gb.video");
20
21static void GBVideoDummyRendererInit(struct GBVideoRenderer* renderer, enum GBModel model, bool borders);
22static void GBVideoDummyRendererDeinit(struct GBVideoRenderer* renderer);
23static uint8_t GBVideoDummyRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value);
24static void GBVideoDummyRendererWriteSGBPacket(struct GBVideoRenderer* renderer, uint8_t* data);
25static void GBVideoDummyRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value);
26static void GBVideoDummyRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address);
27static void GBVideoDummyRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam);
28static void GBVideoDummyRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y);
29static void GBVideoDummyRendererFinishScanline(struct GBVideoRenderer* renderer, int y);
30static void GBVideoDummyRendererFinishFrame(struct GBVideoRenderer* renderer);
31static void GBVideoDummyRendererEnableSGBBorder(struct GBVideoRenderer* renderer, bool enable);
32static void GBVideoDummyRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels);
33static void GBVideoDummyRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels);
34
35static void _cleanOAM(struct GBVideo* video, int y);
36
37static void _endMode0(struct mTiming* timing, void* context, uint32_t cyclesLate);
38static void _endMode1(struct mTiming* timing, void* context, uint32_t cyclesLate);
39static void _endMode2(struct mTiming* timing, void* context, uint32_t cyclesLate);
40static void _endMode3(struct mTiming* timing, void* context, uint32_t cyclesLate);
41static void _updateFrameCount(struct mTiming* timing, void* context, uint32_t cyclesLate);
42
43void GBVideoInit(struct GBVideo* video) {
44 video->renderer = NULL;
45 video->vram = anonymousMemoryMap(GB_SIZE_VRAM);
46 video->frameskip = 0;
47
48 video->modeEvent.context = video;
49 video->modeEvent.name = "GB Video Mode";
50 video->modeEvent.callback = NULL;
51 video->modeEvent.priority = 8;
52 video->frameEvent.context = video;
53 video->frameEvent.name = "GB Video Frame";
54 video->frameEvent.callback = _updateFrameCount;
55 video->frameEvent.priority = 9;
56
57 video->dmgPalette[0] = 0x7FFF;
58 video->dmgPalette[1] = 0x56B5;
59 video->dmgPalette[2] = 0x294A;
60 video->dmgPalette[3] = 0x0000;
61 video->dmgPalette[4] = 0x7FFF;
62 video->dmgPalette[5] = 0x56B5;
63 video->dmgPalette[6] = 0x294A;
64 video->dmgPalette[7] = 0x0000;
65 video->dmgPalette[8] = 0x7FFF;
66 video->dmgPalette[9] = 0x56B5;
67 video->dmgPalette[10] = 0x294A;
68 video->dmgPalette[11] = 0x0000;
69
70 video->sgbBorders = true;
71}
72
73void GBVideoReset(struct GBVideo* video) {
74 video->ly = 0;
75 video->x = 0;
76 video->mode = 1;
77 video->stat = 1;
78
79 video->frameCounter = 0;
80 video->frameskipCounter = 0;
81
82 GBVideoSwitchBank(video, 0);
83 video->renderer->vram = video->vram;
84 memset(&video->oam, 0, sizeof(video->oam));
85 video->renderer->oam = &video->oam;
86 memset(&video->palette, 0, sizeof(video->palette));
87
88 if (video->p->model & GB_MODEL_SGB) {
89 video->renderer->sgbCharRam = anonymousMemoryMap(SGB_SIZE_CHAR_RAM);
90 video->renderer->sgbMapRam = anonymousMemoryMap(SGB_SIZE_MAP_RAM);
91 video->renderer->sgbPalRam = anonymousMemoryMap(SGB_SIZE_PAL_RAM);
92 video->renderer->sgbAttributeFiles = anonymousMemoryMap(SGB_SIZE_ATF_RAM);
93 video->renderer->sgbAttributes = malloc(90 * 45);
94 memset(video->renderer->sgbAttributes, 0, 90 * 45);
95 video->sgbCommandHeader = 0;
96 video->sgbBufferIndex = 0;
97 } else {
98 video->renderer->sgbCharRam = NULL;
99 video->renderer->sgbMapRam = NULL;
100 video->renderer->sgbPalRam = NULL;
101 video->renderer->sgbAttributes = NULL;
102 video->renderer->sgbAttributeFiles = NULL;
103 }
104
105 video->palette[0] = video->dmgPalette[0];
106 video->palette[1] = video->dmgPalette[1];
107 video->palette[2] = video->dmgPalette[2];
108 video->palette[3] = video->dmgPalette[3];
109 video->palette[8 * 4 + 0] = video->dmgPalette[4];
110 video->palette[8 * 4 + 1] = video->dmgPalette[5];
111 video->palette[8 * 4 + 2] = video->dmgPalette[6];
112 video->palette[8 * 4 + 3] = video->dmgPalette[7];
113 video->palette[9 * 4 + 0] = video->dmgPalette[8];
114 video->palette[9 * 4 + 1] = video->dmgPalette[9];
115 video->palette[9 * 4 + 2] = video->dmgPalette[10];
116 video->palette[9 * 4 + 3] = video->dmgPalette[11];
117
118 if (!video->renderer) {
119 mLOG(GB_VIDEO, FATAL, "No renderer associated");
120 return;
121 }
122
123 video->renderer->deinit(video->renderer);
124 video->renderer->init(video->renderer, video->p->model, video->sgbBorders);
125
126 video->renderer->writePalette(video->renderer, 0, video->palette[0]);
127 video->renderer->writePalette(video->renderer, 1, video->palette[1]);
128 video->renderer->writePalette(video->renderer, 2, video->palette[2]);
129 video->renderer->writePalette(video->renderer, 3, video->palette[3]);
130 video->renderer->writePalette(video->renderer, 8 * 4 + 0, video->palette[8 * 4 + 0]);
131 video->renderer->writePalette(video->renderer, 8 * 4 + 1, video->palette[8 * 4 + 1]);
132 video->renderer->writePalette(video->renderer, 8 * 4 + 2, video->palette[8 * 4 + 2]);
133 video->renderer->writePalette(video->renderer, 8 * 4 + 3, video->palette[8 * 4 + 3]);
134 video->renderer->writePalette(video->renderer, 9 * 4 + 0, video->palette[9 * 4 + 0]);
135 video->renderer->writePalette(video->renderer, 9 * 4 + 1, video->palette[9 * 4 + 1]);
136 video->renderer->writePalette(video->renderer, 9 * 4 + 2, video->palette[9 * 4 + 2]);
137 video->renderer->writePalette(video->renderer, 9 * 4 + 3, video->palette[9 * 4 + 3]);
138}
139
140void GBVideoDeinit(struct GBVideo* video) {
141 video->renderer->deinit(video->renderer);
142 mappedMemoryFree(video->vram, GB_SIZE_VRAM);
143 if (video->renderer->sgbCharRam) {
144 mappedMemoryFree(video->renderer->sgbCharRam, SGB_SIZE_CHAR_RAM);
145 video->renderer->sgbCharRam = NULL;
146 }
147 if (video->renderer->sgbMapRam) {
148 mappedMemoryFree(video->renderer->sgbMapRam, SGB_SIZE_MAP_RAM);
149 video->renderer->sgbMapRam = NULL;
150 }
151 if (video->renderer->sgbPalRam) {
152 mappedMemoryFree(video->renderer->sgbPalRam, SGB_SIZE_PAL_RAM);
153 video->renderer->sgbPalRam = NULL;
154 }
155 if (video->renderer->sgbAttributeFiles) {
156 mappedMemoryFree(video->renderer->sgbAttributeFiles, SGB_SIZE_ATF_RAM);
157 video->renderer->sgbAttributeFiles = NULL;
158 }
159 if (video->renderer->sgbAttributes) {
160 free(video->renderer->sgbAttributes);
161 video->renderer->sgbAttributes = NULL;
162 }
163}
164
165void GBVideoDummyRendererCreate(struct GBVideoRenderer* renderer) {
166 static const struct GBVideoRenderer dummyRenderer = {
167 .init = GBVideoDummyRendererInit,
168 .deinit = GBVideoDummyRendererDeinit,
169 .writeVideoRegister = GBVideoDummyRendererWriteVideoRegister,
170 .writeSGBPacket = GBVideoDummyRendererWriteSGBPacket,
171 .writeVRAM = GBVideoDummyRendererWriteVRAM,
172 .writeOAM = GBVideoDummyRendererWriteOAM,
173 .writePalette = GBVideoDummyRendererWritePalette,
174 .drawRange = GBVideoDummyRendererDrawRange,
175 .finishScanline = GBVideoDummyRendererFinishScanline,
176 .finishFrame = GBVideoDummyRendererFinishFrame,
177 .enableSGBBorder = GBVideoDummyRendererEnableSGBBorder,
178 .getPixels = GBVideoDummyRendererGetPixels,
179 .putPixels = GBVideoDummyRendererPutPixels,
180 };
181 memcpy(renderer, &dummyRenderer, sizeof(*renderer));
182}
183
184void GBVideoAssociateRenderer(struct GBVideo* video, struct GBVideoRenderer* renderer) {
185 if (video->renderer) {
186 video->renderer->deinit(video->renderer);
187 renderer->cache = video->renderer->cache;
188 renderer->sgbRenderMode = video->renderer->sgbRenderMode;
189 renderer->sgbCharRam = video->renderer->sgbCharRam;
190 renderer->sgbMapRam = video->renderer->sgbMapRam;
191 renderer->sgbPalRam = video->renderer->sgbPalRam;
192 renderer->sgbAttributeFiles = video->renderer->sgbAttributeFiles;
193 renderer->sgbAttributes = video->renderer->sgbAttributes;
194 } else {
195 renderer->cache = NULL;
196 renderer->sgbRenderMode = 0;
197 renderer->sgbCharRam = NULL;
198 renderer->sgbMapRam = NULL;
199 renderer->sgbPalRam = NULL;
200 renderer->sgbAttributeFiles = NULL;
201 renderer->sgbAttributes = NULL;
202 }
203 video->renderer = renderer;
204 renderer->vram = video->vram;
205 video->renderer->init(video->renderer, video->p->model, video->sgbBorders);
206}
207
208static bool _statIRQAsserted(GBRegisterSTAT stat) {
209 // TODO: variable for the IRQ line value?
210 if (GBRegisterSTATIsLYCIRQ(stat) && GBRegisterSTATIsLYC(stat)) {
211 return true;
212 }
213 switch (GBRegisterSTATGetMode(stat)) {
214 case 0:
215 if (GBRegisterSTATIsHblankIRQ(stat)) {
216 return true;
217 }
218 break;
219 case 1:
220 if (GBRegisterSTATIsVblankIRQ(stat)) {
221 return true;
222 }
223 break;
224 case 2:
225 if (GBRegisterSTATIsOAMIRQ(stat)) {
226 return true;
227 }
228 break;
229 case 3:
230 break;
231 }
232 return false;
233}
234
235void GBVideoSkipBIOS(struct GBVideo* video) {
236 video->mode = 1;
237 video->modeEvent.callback = _endMode1;
238
239 int32_t next;
240 if (video->p->model == GB_MODEL_CGB) {
241 video->ly = GB_VIDEO_VERTICAL_PIXELS;
242 video->p->memory.io[GB_REG_LY] = video->ly;
243 video->stat = GBRegisterSTATClearLYC(video->stat);
244 next = 20;
245 } else {
246 video->ly = GB_VIDEO_VERTICAL_TOTAL_PIXELS;
247 video->p->memory.io[GB_REG_LY] = 0;
248 next = 56;
249 }
250 video->stat = GBRegisterSTATSetMode(video->stat, video->mode);
251
252 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_VBLANK);
253 GBUpdateIRQs(video->p);
254 video->p->memory.io[GB_REG_STAT] = video->stat;
255 mTimingDeschedule(&video->p->timing, &video->modeEvent);
256 mTimingSchedule(&video->p->timing, &video->modeEvent, next << 1);
257}
258
259void _endMode0(struct mTiming* timing, void* context, uint32_t cyclesLate) {
260 struct GBVideo* video = context;
261 if (video->frameskipCounter <= 0) {
262 video->renderer->finishScanline(video->renderer, video->ly);
263 }
264 int lyc = video->p->memory.io[GB_REG_LYC];
265 int32_t next;
266 ++video->ly;
267 video->p->memory.io[GB_REG_LY] = video->ly;
268 GBRegisterSTAT oldStat = video->stat;
269 if (video->ly < GB_VIDEO_VERTICAL_PIXELS) {
270 next = GB_VIDEO_MODE_2_LENGTH;
271 video->mode = 2;
272 video->modeEvent.callback = _endMode2;
273 } else {
274 next = GB_VIDEO_HORIZONTAL_LENGTH;
275 video->mode = 1;
276 video->modeEvent.callback = _endMode1;
277
278 mTimingDeschedule(&video->p->timing, &video->frameEvent);
279 mTimingSchedule(&video->p->timing, &video->frameEvent, -cyclesLate);
280
281 if (!_statIRQAsserted(oldStat) && GBRegisterSTATIsOAMIRQ(video->stat)) {
282 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
283 }
284 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_VBLANK);
285 }
286 video->stat = GBRegisterSTATSetMode(video->stat, video->mode);
287 if (!_statIRQAsserted(oldStat) && _statIRQAsserted(video->stat)) {
288 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
289 }
290
291 // LYC stat is delayed 1 T-cycle
292 oldStat = video->stat;
293 video->stat = GBRegisterSTATSetLYC(video->stat, lyc == video->ly);
294 if (!_statIRQAsserted(oldStat) && _statIRQAsserted(video->stat)) {
295 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
296 }
297
298 GBUpdateIRQs(video->p);
299 video->p->memory.io[GB_REG_STAT] = video->stat;
300 mTimingSchedule(timing, &video->modeEvent, (next << 1) - cyclesLate);
301}
302
303void _endMode1(struct mTiming* timing, void* context, uint32_t cyclesLate) {
304 struct GBVideo* video = context;
305 if (!GBRegisterLCDCIsEnable(video->p->memory.io[GB_REG_LCDC])) {
306 return;
307 }
308 int lyc = video->p->memory.io[GB_REG_LYC];
309 // TODO: One M-cycle delay
310 ++video->ly;
311 int32_t next;
312 if (video->ly == GB_VIDEO_VERTICAL_TOTAL_PIXELS + 1) {
313 video->ly = 0;
314 video->p->memory.io[GB_REG_LY] = video->ly;
315 next = GB_VIDEO_MODE_2_LENGTH;
316 video->mode = 2;
317 video->modeEvent.callback = _endMode2;
318 } else if (video->ly == GB_VIDEO_VERTICAL_TOTAL_PIXELS) {
319 video->p->memory.io[GB_REG_LY] = 0;
320 next = GB_VIDEO_HORIZONTAL_LENGTH - 8;
321 } else if (video->ly == GB_VIDEO_VERTICAL_TOTAL_PIXELS - 1) {
322 video->p->memory.io[GB_REG_LY] = video->ly;
323 next = 8;
324 } else {
325 video->p->memory.io[GB_REG_LY] = video->ly;
326 next = GB_VIDEO_HORIZONTAL_LENGTH;
327 }
328
329 GBRegisterSTAT oldStat = video->stat;
330 video->stat = GBRegisterSTATSetMode(video->stat, video->mode);
331 video->stat = GBRegisterSTATSetLYC(video->stat, lyc == video->p->memory.io[GB_REG_LY]);
332 if (!_statIRQAsserted(oldStat) && _statIRQAsserted(video->stat)) {
333 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
334 GBUpdateIRQs(video->p);
335 }
336 video->p->memory.io[GB_REG_STAT] = video->stat;
337 mTimingSchedule(timing, &video->modeEvent, (next << 1) - cyclesLate);
338}
339
340void _endMode2(struct mTiming* timing, void* context, uint32_t cyclesLate) {
341 struct GBVideo* video = context;
342 _cleanOAM(video, video->ly);
343 video->x = -(video->p->memory.io[GB_REG_SCX] & 7);
344 video->dotClock = mTimingCurrentTime(timing) - cyclesLate + 10 - (video->x << 1);
345 int32_t next = GB_VIDEO_MODE_3_LENGTH_BASE + video->objMax * 6 - video->x;
346 video->mode = 3;
347 video->modeEvent.callback = _endMode3;
348 GBRegisterSTAT oldStat = video->stat;
349 video->stat = GBRegisterSTATSetMode(video->stat, video->mode);
350 if (!_statIRQAsserted(oldStat) && _statIRQAsserted(video->stat)) {
351 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
352 GBUpdateIRQs(video->p);
353 }
354 video->p->memory.io[GB_REG_STAT] = video->stat;
355 mTimingSchedule(timing, &video->modeEvent, (next << 1) - cyclesLate);
356}
357
358void _endMode3(struct mTiming* timing, void* context, uint32_t cyclesLate) {
359 struct GBVideo* video = context;
360 GBVideoProcessDots(video, cyclesLate);
361 if (video->ly < GB_VIDEO_VERTICAL_PIXELS && video->p->memory.isHdma && video->p->memory.io[GB_REG_HDMA5] != 0xFF) {
362 video->p->memory.hdmaRemaining = 0x10;
363 video->p->cpuBlocked = true;
364 mTimingDeschedule(timing, &video->p->memory.hdmaEvent);
365 mTimingSchedule(timing, &video->p->memory.hdmaEvent, 0);
366 }
367 video->mode = 0;
368 video->modeEvent.callback = _endMode0;
369 GBRegisterSTAT oldStat = video->stat;
370 video->stat = GBRegisterSTATSetMode(video->stat, video->mode);
371 if (!_statIRQAsserted(oldStat) && _statIRQAsserted(video->stat)) {
372 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
373 GBUpdateIRQs(video->p);
374 }
375 video->p->memory.io[GB_REG_STAT] = video->stat;
376 // TODO: Cache SCX & 7 in case it changes
377 int32_t next = GB_VIDEO_MODE_0_LENGTH_BASE - video->objMax * 6 - (video->p->memory.io[GB_REG_SCX] & 7);
378 mTimingSchedule(timing, &video->modeEvent, (next << 1) - cyclesLate);
379}
380
381void _updateFrameCount(struct mTiming* timing, void* context, uint32_t cyclesLate) {
382 UNUSED(cyclesLate);
383 struct GBVideo* video = context;
384 if (video->p->cpu->executionState != SM83_CORE_FETCH) {
385 mTimingSchedule(timing, &video->frameEvent, (4 - ((video->p->cpu->executionState + 1) & 3)) * (2 - video->p->doubleSpeed));
386 return;
387 }
388 if (!GBRegisterLCDCIsEnable(video->p->memory.io[GB_REG_LCDC])) {
389 mTimingSchedule(timing, &video->frameEvent, GB_VIDEO_TOTAL_LENGTH << 1);
390 }
391
392 --video->frameskipCounter;
393 if (video->frameskipCounter < 0) {
394 video->renderer->finishFrame(video->renderer);
395 video->frameskipCounter = video->frameskip;
396 }
397 GBFrameEnded(video->p);
398 mCoreSyncPostFrame(video->p->sync);
399 ++video->frameCounter;
400 video->p->earlyExit = true;
401
402 GBFrameStarted(video->p);
403}
404
405static void _cleanOAM(struct GBVideo* video, int y) {
406 int spriteHeight = 8;
407 if (GBRegisterLCDCIsObjSize(video->p->memory.io[GB_REG_LCDC])) {
408 spriteHeight = 16;
409 }
410 int o = 0;
411 int i;
412 for (i = 0; i < GB_VIDEO_MAX_OBJ && o < GB_VIDEO_MAX_LINE_OBJ; ++i) {
413 uint8_t oy = video->oam.obj[i].y;
414 if (y < oy - 16 || y >= oy - 16 + spriteHeight) {
415 continue;
416 }
417 ++o;
418 }
419 video->objMax = o;
420}
421
422void GBVideoProcessDots(struct GBVideo* video, uint32_t cyclesLate) {
423 if (video->mode != 3) {
424 return;
425 }
426 int oldX = video->x;
427 video->x = ((int32_t) (mTimingCurrentTime(&video->p->timing) - cyclesLate - video->dotClock)) >> 1;
428 if (video->x > GB_VIDEO_HORIZONTAL_PIXELS) {
429 video->x = GB_VIDEO_HORIZONTAL_PIXELS;
430 } else if (video->x < 0) {
431 return;
432 }
433 if (oldX < 0) {
434 oldX = 0;
435 }
436 if (video->frameskipCounter <= 0) {
437 video->renderer->drawRange(video->renderer, oldX, video->x, video->ly);
438 }
439}
440
441void GBVideoWriteLCDC(struct GBVideo* video, GBRegisterLCDC value) {
442 if (!GBRegisterLCDCIsEnable(video->p->memory.io[GB_REG_LCDC]) && GBRegisterLCDCIsEnable(value)) {
443 video->mode = 2;
444 video->modeEvent.callback = _endMode2;
445 int32_t next = GB_VIDEO_MODE_2_LENGTH - 5; // TODO: Why is this fudge factor needed? Might be related to T-cycles for load/store differing
446 mTimingDeschedule(&video->p->timing, &video->modeEvent);
447 mTimingSchedule(&video->p->timing, &video->modeEvent, next << 1);
448
449 video->ly = 0;
450 video->p->memory.io[GB_REG_LY] = 0;
451 GBRegisterSTAT oldStat = video->stat;
452 video->stat = GBRegisterSTATSetMode(video->stat, 0);
453 video->stat = GBRegisterSTATSetLYC(video->stat, video->ly == video->p->memory.io[GB_REG_LYC]);
454 if (!_statIRQAsserted(oldStat) && _statIRQAsserted(video->stat)) {
455 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
456 GBUpdateIRQs(video->p);
457 }
458 video->p->memory.io[GB_REG_STAT] = video->stat;
459 video->renderer->writePalette(video->renderer, 0, video->palette[0]);
460
461 mTimingDeschedule(&video->p->timing, &video->frameEvent);
462 }
463 if (GBRegisterLCDCIsEnable(video->p->memory.io[GB_REG_LCDC]) && !GBRegisterLCDCIsEnable(value)) {
464 // TODO: Fix serialization; this gets internal and visible modes out of sync
465 video->mode = 0;
466 video->stat = GBRegisterSTATSetMode(video->stat, 0);
467 video->p->memory.io[GB_REG_STAT] = video->stat;
468 video->ly = 0;
469 video->p->memory.io[GB_REG_LY] = 0;
470 video->renderer->writePalette(video->renderer, 0, video->dmgPalette[0]);
471
472 mTimingDeschedule(&video->p->timing, &video->modeEvent);
473 mTimingDeschedule(&video->p->timing, &video->frameEvent);
474 mTimingSchedule(&video->p->timing, &video->frameEvent, GB_VIDEO_TOTAL_LENGTH << 1);
475 }
476 video->p->memory.io[GB_REG_STAT] = video->stat;
477}
478
479void GBVideoWriteSTAT(struct GBVideo* video, GBRegisterSTAT value) {
480 GBRegisterSTAT oldStat = video->stat;
481 video->stat = (video->stat & 0x7) | (value & 0x78);
482 if (!GBRegisterLCDCIsEnable(video->p->memory.io[GB_REG_LCDC]) || video->p->model >= GB_MODEL_CGB) {
483 return;
484 }
485 if (!_statIRQAsserted(oldStat) && video->mode < 3) {
486 // TODO: variable for the IRQ line value?
487 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
488 GBUpdateIRQs(video->p);
489 }
490}
491
492void GBVideoWriteLYC(struct GBVideo* video, uint8_t value) {
493 GBRegisterSTAT oldStat = video->stat;
494 if (GBRegisterLCDCIsEnable(video->p->memory.io[GB_REG_LCDC])) {
495 video->stat = GBRegisterSTATSetLYC(video->stat, value == video->ly);
496 if (!_statIRQAsserted(oldStat) && _statIRQAsserted(video->stat)) {
497 video->p->memory.io[GB_REG_IF] |= (1 << GB_IRQ_LCDSTAT);
498 GBUpdateIRQs(video->p);
499 }
500 }
501 video->p->memory.io[GB_REG_STAT] = video->stat;
502}
503
504void GBVideoWritePalette(struct GBVideo* video, uint16_t address, uint8_t value) {
505 if (video->p->model < GB_MODEL_SGB) {
506 switch (address) {
507 case GB_REG_BGP:
508 video->palette[0] = video->dmgPalette[value & 3];
509 video->palette[1] = video->dmgPalette[(value >> 2) & 3];
510 video->palette[2] = video->dmgPalette[(value >> 4) & 3];
511 video->palette[3] = video->dmgPalette[(value >> 6) & 3];
512 video->renderer->writePalette(video->renderer, 0, video->palette[0]);
513 video->renderer->writePalette(video->renderer, 1, video->palette[1]);
514 video->renderer->writePalette(video->renderer, 2, video->palette[2]);
515 video->renderer->writePalette(video->renderer, 3, video->palette[3]);
516 break;
517 case GB_REG_OBP0:
518 video->palette[8 * 4 + 0] = video->dmgPalette[(value & 3) + 4];
519 video->palette[8 * 4 + 1] = video->dmgPalette[((value >> 2) & 3) + 4];
520 video->palette[8 * 4 + 2] = video->dmgPalette[((value >> 4) & 3) + 4];
521 video->palette[8 * 4 + 3] = video->dmgPalette[((value >> 6) & 3) + 4];
522 video->renderer->writePalette(video->renderer, 8 * 4 + 0, video->palette[8 * 4 + 0]);
523 video->renderer->writePalette(video->renderer, 8 * 4 + 1, video->palette[8 * 4 + 1]);
524 video->renderer->writePalette(video->renderer, 8 * 4 + 2, video->palette[8 * 4 + 2]);
525 video->renderer->writePalette(video->renderer, 8 * 4 + 3, video->palette[8 * 4 + 3]);
526 break;
527 case GB_REG_OBP1:
528 video->palette[9 * 4 + 0] = video->dmgPalette[(value & 3) + 8];
529 video->palette[9 * 4 + 1] = video->dmgPalette[((value >> 2) & 3) + 8];
530 video->palette[9 * 4 + 2] = video->dmgPalette[((value >> 4) & 3) + 8];
531 video->palette[9 * 4 + 3] = video->dmgPalette[((value >> 6) & 3) + 8];
532 video->renderer->writePalette(video->renderer, 9 * 4 + 0, video->palette[9 * 4 + 0]);
533 video->renderer->writePalette(video->renderer, 9 * 4 + 1, video->palette[9 * 4 + 1]);
534 video->renderer->writePalette(video->renderer, 9 * 4 + 2, video->palette[9 * 4 + 2]);
535 video->renderer->writePalette(video->renderer, 9 * 4 + 3, video->palette[9 * 4 + 3]);
536 break;
537 }
538 } else if (video->p->model & GB_MODEL_SGB) {
539 video->renderer->writeVideoRegister(video->renderer, address, value);
540 } else {
541 switch (address) {
542 case GB_REG_BCPD:
543 if (video->mode != 3) {
544 if (video->bcpIndex & 1) {
545 video->palette[video->bcpIndex >> 1] &= 0x00FF;
546 video->palette[video->bcpIndex >> 1] |= value << 8;
547 } else {
548 video->palette[video->bcpIndex >> 1] &= 0xFF00;
549 video->palette[video->bcpIndex >> 1] |= value;
550 }
551 video->renderer->writePalette(video->renderer, video->bcpIndex >> 1, video->palette[video->bcpIndex >> 1]);
552 }
553 if (video->bcpIncrement) {
554 ++video->bcpIndex;
555 video->bcpIndex &= 0x3F;
556 video->p->memory.io[GB_REG_BCPS] &= 0x80;
557 video->p->memory.io[GB_REG_BCPS] |= video->bcpIndex;
558 }
559 video->p->memory.io[GB_REG_BCPD] = video->palette[video->bcpIndex >> 1] >> (8 * (video->bcpIndex & 1));
560 break;
561 case GB_REG_OCPD:
562 if (video->mode != 3) {
563 if (video->ocpIndex & 1) {
564 video->palette[8 * 4 + (video->ocpIndex >> 1)] &= 0x00FF;
565 video->palette[8 * 4 + (video->ocpIndex >> 1)] |= value << 8;
566 } else {
567 video->palette[8 * 4 + (video->ocpIndex >> 1)] &= 0xFF00;
568 video->palette[8 * 4 + (video->ocpIndex >> 1)] |= value;
569 }
570 video->renderer->writePalette(video->renderer, 8 * 4 + (video->ocpIndex >> 1), video->palette[8 * 4 + (video->ocpIndex >> 1)]);
571 }
572 if (video->ocpIncrement) {
573 ++video->ocpIndex;
574 video->ocpIndex &= 0x3F;
575 video->p->memory.io[GB_REG_OCPS] &= 0x80;
576 video->p->memory.io[GB_REG_OCPS] |= video->ocpIndex;
577 }
578 video->p->memory.io[GB_REG_OCPD] = video->palette[8 * 4 + (video->ocpIndex >> 1)] >> (8 * (video->ocpIndex & 1));
579 break;
580 }
581 }
582}
583
584void GBVideoSwitchBank(struct GBVideo* video, uint8_t value) {
585 value &= 1;
586 video->vramBank = &video->vram[value * GB_SIZE_VRAM_BANK0];
587 video->vramCurrentBank = value;
588}
589
590void GBVideoSetPalette(struct GBVideo* video, unsigned index, uint32_t color) {
591 if (index >= 12) {
592 return;
593 }
594 video->dmgPalette[index] = M_RGB8_TO_RGB5(color);
595}
596
597void GBVideoDisableCGB(struct GBVideo* video) {
598 video->dmgPalette[0] = video->palette[0];
599 video->dmgPalette[1] = video->palette[1];
600 video->dmgPalette[2] = video->palette[2];
601 video->dmgPalette[3] = video->palette[3];
602 video->dmgPalette[4] = video->palette[8 * 4 + 0];
603 video->dmgPalette[5] = video->palette[8 * 4 + 1];
604 video->dmgPalette[6] = video->palette[8 * 4 + 2];
605 video->dmgPalette[7] = video->palette[8 * 4 + 3];
606 video->dmgPalette[8] = video->palette[9 * 4 + 0];
607 video->dmgPalette[9] = video->palette[9 * 4 + 1];
608 video->dmgPalette[10] = video->palette[9 * 4 + 2];
609 video->dmgPalette[11] = video->palette[9 * 4 + 3];
610 video->renderer->deinit(video->renderer);
611 video->renderer->init(video->renderer, video->p->model, video->sgbBorders);
612}
613
614void GBVideoWriteSGBPacket(struct GBVideo* video, uint8_t* data) {
615 int i;
616 if (!(video->sgbCommandHeader & 7)) {
617 video->sgbBufferIndex = 0;
618 if ((data[0] >> 3) > SGB_OBJ_TRN) {
619 video->sgbCommandHeader = 0;
620 return;
621 }
622 video->sgbCommandHeader = data[0];
623 }
624 --video->sgbCommandHeader;
625 memcpy(&video->sgbPacketBuffer[video->sgbBufferIndex << 4], data, 16);
626 ++video->sgbBufferIndex;
627 if (video->sgbCommandHeader & 7) {
628 return;
629 }
630 switch (video->sgbCommandHeader >> 3) {
631 case SGB_PAL01:
632 video->palette[0] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
633 video->palette[1] = video->sgbPacketBuffer[3] | (video->sgbPacketBuffer[4] << 8);
634 video->palette[2] = video->sgbPacketBuffer[5] | (video->sgbPacketBuffer[6] << 8);
635 video->palette[3] = video->sgbPacketBuffer[7] | (video->sgbPacketBuffer[8] << 8);
636
637 video->palette[4] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
638 video->palette[5] = video->sgbPacketBuffer[9] | (video->sgbPacketBuffer[10] << 8);
639 video->palette[6] = video->sgbPacketBuffer[11] | (video->sgbPacketBuffer[12] << 8);
640 video->palette[7] = video->sgbPacketBuffer[13] | (video->sgbPacketBuffer[14] << 8);
641
642 video->palette[8] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
643 video->palette[12] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
644
645 video->renderer->writePalette(video->renderer, 0, video->palette[0]);
646 video->renderer->writePalette(video->renderer, 1, video->palette[1]);
647 video->renderer->writePalette(video->renderer, 2, video->palette[2]);
648 video->renderer->writePalette(video->renderer, 3, video->palette[3]);
649 video->renderer->writePalette(video->renderer, 4, video->palette[4]);
650 video->renderer->writePalette(video->renderer, 5, video->palette[5]);
651 video->renderer->writePalette(video->renderer, 6, video->palette[6]);
652 video->renderer->writePalette(video->renderer, 7, video->palette[7]);
653 video->renderer->writePalette(video->renderer, 8, video->palette[8]);
654 video->renderer->writePalette(video->renderer, 12, video->palette[12]);
655 break;
656 case SGB_PAL23:
657 video->palette[9] = video->sgbPacketBuffer[3] | (video->sgbPacketBuffer[4] << 8);
658 video->palette[10] = video->sgbPacketBuffer[5] | (video->sgbPacketBuffer[6] << 8);
659 video->palette[11] = video->sgbPacketBuffer[7] | (video->sgbPacketBuffer[8] << 8);
660
661 video->palette[13] = video->sgbPacketBuffer[9] | (video->sgbPacketBuffer[10] << 8);
662 video->palette[14] = video->sgbPacketBuffer[11] | (video->sgbPacketBuffer[12] << 8);
663 video->palette[15] = video->sgbPacketBuffer[13] | (video->sgbPacketBuffer[14] << 8);
664 video->renderer->writePalette(video->renderer, 9, video->palette[9]);
665 video->renderer->writePalette(video->renderer, 10, video->palette[10]);
666 video->renderer->writePalette(video->renderer, 11, video->palette[11]);
667 video->renderer->writePalette(video->renderer, 13, video->palette[13]);
668 video->renderer->writePalette(video->renderer, 14, video->palette[14]);
669 video->renderer->writePalette(video->renderer, 15, video->palette[15]);
670 break;
671 case SGB_PAL03:
672 video->palette[0] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
673 video->palette[1] = video->sgbPacketBuffer[3] | (video->sgbPacketBuffer[4] << 8);
674 video->palette[2] = video->sgbPacketBuffer[5] | (video->sgbPacketBuffer[6] << 8);
675 video->palette[3] = video->sgbPacketBuffer[7] | (video->sgbPacketBuffer[8] << 8);
676
677 video->palette[4] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
678 video->palette[8] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
679
680 video->palette[12] = video->sgbPacketBuffer[1] | (video->sgbPacketBuffer[2] << 8);
681 video->palette[13] = video->sgbPacketBuffer[9] | (video->sgbPacketBuffer[10] << 8);
682 video->palette[14] = video->sgbPacketBuffer[11] | (video->sgbPacketBuffer[12] << 8);
683 video->palette[15] = video->sgbPacketBuffer[13] | (video->sgbPacketBuffer[14] << 8);
684 video->renderer->writePalette(video->renderer, 0, video->palette[0]);
685 video->renderer->writePalette(video->renderer, 1, video->palette[1]);
686 video->renderer->writePalette(video->renderer, 2, video->palette[2]);
687 video->renderer->writePalette(video->renderer, 3, video->palette[3]);
688 video->renderer->writePalette(video->renderer, 4, video->palette[4]);
689 video->renderer->writePalette(video->renderer, 8, video->palette[8]);
690 video->renderer->writePalette(video->renderer, 12, video->palette[12]);
691 video->renderer->writePalette(video->renderer, 13, video->palette[13]);
692 video->renderer->writePalette(video->renderer, 14, video->palette[14]);
693 video->renderer->writePalette(video->renderer, 15, video->palette[15]);
694 break;
695 case SGB_PAL12:
696 video->palette[5] = video->sgbPacketBuffer[3] | (video->sgbPacketBuffer[4] << 8);
697 video->palette[6] = video->sgbPacketBuffer[5] | (video->sgbPacketBuffer[6] << 8);
698 video->palette[7] = video->sgbPacketBuffer[7] | (video->sgbPacketBuffer[8] << 8);
699
700 video->palette[9] = video->sgbPacketBuffer[9] | (video->sgbPacketBuffer[10] << 8);
701 video->palette[10] = video->sgbPacketBuffer[11] | (video->sgbPacketBuffer[12] << 8);
702 video->palette[11] = video->sgbPacketBuffer[13] | (video->sgbPacketBuffer[14] << 8);
703 video->renderer->writePalette(video->renderer, 5, video->palette[5]);
704 video->renderer->writePalette(video->renderer, 6, video->palette[6]);
705 video->renderer->writePalette(video->renderer, 7, video->palette[7]);
706 video->renderer->writePalette(video->renderer, 9, video->palette[9]);
707 video->renderer->writePalette(video->renderer, 10, video->palette[10]);
708 video->renderer->writePalette(video->renderer, 11, video->palette[11]);
709 break;
710 case SGB_PAL_SET:
711 for (i = 0; i < 4; ++i) {
712 uint16_t entry = (video->sgbPacketBuffer[2 + (i * 2)] << 8) | video->sgbPacketBuffer[1 + (i * 2)];
713 if (entry >= 0x200) {
714 mLOG(GB, STUB, "Unimplemented SGB palette overflow: %03X", entry);
715 continue;
716 }
717 LOAD_16LE(video->palette[i * 4 + 0], entry * 8 + 0, video->renderer->sgbPalRam);
718 video->renderer->writePalette(video->renderer, i * 4 + 0, video->palette[i * 4 + 0]);
719 LOAD_16LE(video->palette[i * 4 + 1], entry * 8 + 2, video->renderer->sgbPalRam);
720 video->renderer->writePalette(video->renderer, i * 4 + 1, video->palette[i * 4 + 1]);
721 LOAD_16LE(video->palette[i * 4 + 2], entry * 8 + 4, video->renderer->sgbPalRam);
722 video->renderer->writePalette(video->renderer, i * 4 + 2, video->palette[i * 4 + 2]);
723 LOAD_16LE(video->palette[i * 4 + 3], entry * 8 + 6, video->renderer->sgbPalRam);
724 video->renderer->writePalette(video->renderer, i * 4 + 3, video->palette[i * 4 + 3]);
725 }
726 break;
727 case SGB_ATTR_BLK:
728 case SGB_ATTR_DIV:
729 case SGB_ATTR_CHR:
730 case SGB_ATTR_LIN:
731 case SGB_PAL_TRN:
732 case SGB_ATRC_EN:
733 case SGB_CHR_TRN:
734 case SGB_PCT_TRN:
735 case SGB_ATTR_TRN:
736 case SGB_ATTR_SET:
737 break;
738 case SGB_MLT_REQ:
739 if ((video->sgbPacketBuffer[1] & 0x3) == 2) { // XXX: This unmasked increment appears to be an SGB hardware bug
740 ++video->p->sgbCurrentController;
741 }
742 video->p->sgbControllers = video->sgbPacketBuffer[1] & 0x3;
743 video->p->sgbCurrentController &= video->p->sgbControllers;
744 return;
745 case SGB_MASK_EN:
746 video->renderer->sgbRenderMode = video->sgbPacketBuffer[1] & 0x3;
747 break;
748 default:
749 mLOG(GB, STUB, "Unimplemented SGB command: %02X", video->sgbPacketBuffer[0] >> 3);
750 return;
751 }
752 video->renderer->writeSGBPacket(video->renderer, video->sgbPacketBuffer);
753}
754
755static void GBVideoDummyRendererInit(struct GBVideoRenderer* renderer, enum GBModel model, bool borders) {
756 UNUSED(renderer);
757 UNUSED(model);
758 UNUSED(borders);
759 // Nothing to do
760}
761
762static void GBVideoDummyRendererDeinit(struct GBVideoRenderer* renderer) {
763 UNUSED(renderer);
764 // Nothing to do
765}
766
767static uint8_t GBVideoDummyRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value) {
768 if (renderer->cache) {
769 GBVideoCacheWriteVideoRegister(renderer->cache, address, value);
770 }
771 return value;
772}
773
774static void GBVideoDummyRendererWriteSGBPacket(struct GBVideoRenderer* renderer, uint8_t* data) {
775 UNUSED(renderer);
776 UNUSED(data);
777}
778
779static void GBVideoDummyRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address) {
780 if (renderer->cache) {
781 mCacheSetWriteVRAM(renderer->cache, address);
782 }
783}
784
785static void GBVideoDummyRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam) {
786 UNUSED(renderer);
787 UNUSED(oam);
788 // Nothing to do
789}
790
791static void GBVideoDummyRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value) {
792 if (renderer->cache) {
793 mCacheSetWritePalette(renderer->cache, index, mColorFrom555(value));
794 }
795}
796
797static void GBVideoDummyRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y) {
798 UNUSED(renderer);
799 UNUSED(endX);
800 UNUSED(startX);
801 UNUSED(y);
802 // Nothing to do
803}
804
805static void GBVideoDummyRendererFinishScanline(struct GBVideoRenderer* renderer, int y) {
806 UNUSED(renderer);
807 UNUSED(y);
808 // Nothing to do
809}
810
811static void GBVideoDummyRendererFinishFrame(struct GBVideoRenderer* renderer) {
812 UNUSED(renderer);
813 // Nothing to do
814}
815
816static void GBVideoDummyRendererEnableSGBBorder(struct GBVideoRenderer* renderer, bool enable) {
817 UNUSED(renderer);
818 UNUSED(enable);
819 // Nothing to do
820}
821
822static void GBVideoDummyRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels) {
823 UNUSED(renderer);
824 UNUSED(stride);
825 UNUSED(pixels);
826 // Nothing to do
827}
828
829static void GBVideoDummyRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels) {
830 UNUSED(renderer);
831 UNUSED(stride);
832 UNUSED(pixels);
833 // Nothing to do
834}
835
836void GBVideoSerialize(const struct GBVideo* video, struct GBSerializedState* state) {
837 STORE_16LE(video->x, 0, &state->video.x);
838 STORE_16LE(video->ly, 0, &state->video.ly);
839 STORE_32LE(video->frameCounter, 0, &state->video.frameCounter);
840 STORE_32LE(video->dotClock, 0, &state->video.dotCounter);
841 state->video.vramCurrentBank = video->vramCurrentBank;
842
843 GBSerializedVideoFlags flags = 0;
844 flags = GBSerializedVideoFlagsSetBcpIncrement(flags, video->bcpIncrement);
845 flags = GBSerializedVideoFlagsSetOcpIncrement(flags, video->ocpIncrement);
846 flags = GBSerializedVideoFlagsSetMode(flags, video->mode);
847 flags = GBSerializedVideoFlagsSetNotModeEventScheduled(flags, !mTimingIsScheduled(&video->p->timing, &video->modeEvent));
848 flags = GBSerializedVideoFlagsSetNotFrameEventScheduled(flags, !mTimingIsScheduled(&video->p->timing, &video->frameEvent));
849 state->video.flags = flags;
850 STORE_16LE(video->bcpIndex, 0, &state->video.bcpIndex);
851 STORE_16LE(video->ocpIndex, 0, &state->video.ocpIndex);
852
853 size_t i;
854 for (i = 0; i < 64; ++i) {
855 STORE_16LE(video->palette[i], i * 2, state->video.palette);
856 }
857
858 STORE_32LE(video->modeEvent.when - mTimingCurrentTime(&video->p->timing), 0, &state->video.nextMode);
859 STORE_32LE(video->frameEvent.when - mTimingCurrentTime(&video->p->timing), 0, &state->video.nextFrame);
860
861 memcpy(state->vram, video->vram, GB_SIZE_VRAM);
862 memcpy(state->oam, &video->oam.raw, GB_SIZE_OAM);
863}
864
865void GBVideoDeserialize(struct GBVideo* video, const struct GBSerializedState* state) {
866 LOAD_16LE(video->x, 0, &state->video.x);
867 LOAD_16LE(video->ly, 0, &state->video.ly);
868 LOAD_32LE(video->frameCounter, 0, &state->video.frameCounter);
869 LOAD_32LE(video->dotClock, 0, &state->video.dotCounter);
870 video->x = (int16_t) video->x; // Ensure proper sign extension--the LOAD_16 is unsigned
871
872 video->vramCurrentBank = state->video.vramCurrentBank;
873
874 GBSerializedVideoFlags flags = state->video.flags;
875 video->bcpIncrement = GBSerializedVideoFlagsGetBcpIncrement(flags);
876 video->ocpIncrement = GBSerializedVideoFlagsGetOcpIncrement(flags);
877 video->mode = GBSerializedVideoFlagsGetMode(flags);
878 LOAD_16LE(video->bcpIndex, 0, &state->video.bcpIndex);
879 video->bcpIndex &= 0x3F;
880 LOAD_16LE(video->ocpIndex, 0, &state->video.ocpIndex);
881 video->ocpIndex &= 0x3F;
882
883 switch (video->mode) {
884 case 0:
885 video->modeEvent.callback = _endMode0;
886 break;
887 case 1:
888 video->modeEvent.callback = _endMode1;
889 break;
890 case 2:
891 video->modeEvent.callback = _endMode2;
892 break;
893 case 3:
894 video->modeEvent.callback = _endMode3;
895 break;
896 }
897
898 uint32_t when;
899 LOAD_32LE(when, 0, &state->video.nextMode);
900 if (!GBSerializedVideoFlagsIsNotModeEventScheduled(flags)) {
901 mTimingSchedule(&video->p->timing, &video->modeEvent, when);
902 } else {
903 video->modeEvent.when = when + mTimingCurrentTime(&video->p->timing);
904 }
905 LOAD_32LE(when, 0, &state->video.nextFrame);
906 if (!GBSerializedVideoFlagsIsNotFrameEventScheduled(flags)) {
907 mTimingSchedule(&video->p->timing, &video->frameEvent, when);
908 } else {
909 video->frameEvent.when = when + mTimingCurrentTime(&video->p->timing);
910 }
911
912 video->renderer->deinit(video->renderer);
913 video->renderer->init(video->renderer, video->p->model, video->sgbBorders);
914
915 size_t i;
916 for (i = 0; i < 64; ++i) {
917 LOAD_16LE(video->palette[i], i * 2, state->video.palette);
918 video->renderer->writePalette(video->renderer, i, video->palette[i]);
919 }
920
921 memcpy(video->vram, state->vram, GB_SIZE_VRAM);
922 memcpy(&video->oam.raw, state->oam, GB_SIZE_OAM);
923
924 _cleanOAM(video, video->ly);
925 GBVideoSwitchBank(video, video->vramCurrentBank);
926}