src/ds/video.c (view raw)
1/* Copyright (c) 2013-2015 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include <mgba/internal/ds/video.h>
7
8#include <mgba/core/sync.h>
9#include <mgba/internal/arm/macros.h>
10#include <mgba/internal/ds/ds.h>
11#include <mgba/internal/ds/memory.h>
12#include <mgba/internal/gba/video.h>
13
14#include <mgba-util/memory.h>
15
16mLOG_DEFINE_CATEGORY(DS_VIDEO, "DS Video", "ds.video");
17
18static void DSVideoDummyRendererInit(struct DSVideoRenderer* renderer);
19static void DSVideoDummyRendererReset(struct DSVideoRenderer* renderer);
20static void DSVideoDummyRendererDeinit(struct DSVideoRenderer* renderer);
21static uint16_t DSVideoDummyRendererWriteVideoRegister(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value);
22static void DSVideoDummyRendererWritePalette(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value);
23static void DSVideoDummyRendererWriteOAM(struct DSVideoRenderer* renderer, uint32_t oam);
24static void DSVideoDummyRendererInvalidateExtPal(struct DSVideoRenderer* renderer, bool obj, bool engB, int slot);
25static void DSVideoDummyRendererDrawScanline(struct DSVideoRenderer* renderer, int y);
26static void DSVideoDummyRendererDrawScanlineDirectly(struct DSVideoRenderer* renderer, int y, color_t* scanline);
27static void DSVideoDummyRendererFinishFrame(struct DSVideoRenderer* renderer);
28static void DSVideoDummyRendererGetPixels(struct DSVideoRenderer* renderer, size_t* stride, const void** pixels);
29static void DSVideoDummyRendererPutPixels(struct DSVideoRenderer* renderer, size_t stride, const void* pixels);
30
31static void _startHblank7(struct mTiming*, void* context, uint32_t cyclesLate);
32static void _startHdraw7(struct mTiming*, void* context, uint32_t cyclesLate);
33static void _startHblank9(struct mTiming*, void* context, uint32_t cyclesLate);
34static void _startHdraw9(struct mTiming*, void* context, uint32_t cyclesLate);
35
36static const uint32_t _vramSize[9] = {
37 0x20000,
38 0x20000,
39 0x20000,
40 0x20000,
41 0x10000,
42 0x04000,
43 0x04000,
44 0x08000,
45 0x04000
46};
47
48enum DSVRAMBankMode {
49 MODE_A_BG = 0,
50 MODE_B_BG = 1,
51 MODE_A_OBJ = 2,
52 MODE_B_OBJ = 3,
53 MODE_LCDC,
54 MODE_7_VRAM,
55 MODE_A_BG_EXT_PAL,
56 MODE_B_BG_EXT_PAL,
57 MODE_A_OBJ_EXT_PAL,
58 MODE_B_OBJ_EXT_PAL,
59 MODE_3D_TEX,
60 MODE_3D_TEX_PAL,
61};
62
63const struct DSVRAMBankInfo {
64 int base;
65 uint32_t mirrorSize;
66 enum DSVRAMBankMode mode;
67 int offset[4];
68} _vramInfo[9][8] = {
69 { // A
70 { 0x000, 0x40, MODE_LCDC },
71 { 0x000, 0x20, MODE_A_BG, { 0x00, 0x08, 0x10, 0x18 } },
72 { 0x000, 0x10, MODE_A_OBJ, { 0x00, 0x08, 0x80, 0x80 } },
73 { 0x000, 0x01, MODE_3D_TEX, { 0x00, 0x01, 0x02, 0x03 } },
74 },
75 { // B
76 { 0x008, 0x40, MODE_LCDC },
77 { 0x000, 0x20, MODE_A_BG, { 0x00, 0x08, 0x10, 0x18 } },
78 { 0x000, 0x10, MODE_A_OBJ, { 0x00, 0x08, 0x80, 0x80 } },
79 { 0x000, 0x01, MODE_3D_TEX, { 0x00, 0x01, 0x02, 0x03 } },
80 },
81 { // C
82 { 0x010, 0x40, MODE_LCDC },
83 { 0x000, 0x20, MODE_A_BG, { 0x00, 0x08, 0x10, 0x18 } },
84 { 0x000, 0x40, MODE_7_VRAM, { 0x00, 0x08, 0x80, 0x80 } },
85 { 0x000, 0x01, MODE_3D_TEX, { 0x00, 0x01, 0x02, 0x03 } },
86 { 0x000, 0x08, MODE_B_BG },
87 },
88 { // D
89 { 0x018, 0x40, MODE_LCDC },
90 { 0x000, 0x20, MODE_A_BG, { 0x00, 0x08, 0x10, 0x18 } },
91 { 0x000, 0x40, MODE_7_VRAM, { 0x00, 0x08, 0x80, 0x80 } },
92 { 0x000, 0x01, MODE_3D_TEX, { 0x00, 0x01, 0x02, 0x03 } },
93 { 0x000, 0x08, MODE_B_OBJ },
94 },
95 { // E
96 { 0x020, 0x40, MODE_LCDC },
97 { 0x000, 0x20, MODE_A_BG },
98 { 0x000, 0x10, MODE_A_OBJ },
99 { 0x000, 0x04, MODE_3D_TEX_PAL },
100 { 0x000, 0x04, MODE_A_BG_EXT_PAL },
101 },
102 { // F
103 { 0x024, 0x40, MODE_LCDC },
104 { 0x000, 0x20, MODE_A_BG, { 0x00, 0x01, 0x04, 0x05 } },
105 { 0x000, 0x10, MODE_A_OBJ, { 0x00, 0x01, 0x04, 0x05 } },
106 { 0x000, 0x01, MODE_3D_TEX_PAL, { 0x00, 0x01, 0x04, 0x05 } },
107 { 0x000, 0x02, MODE_A_BG_EXT_PAL, { 0x00, 0x02, 0x00, 0x02 } },
108 { 0x000, 0x01, MODE_A_OBJ_EXT_PAL},
109 },
110 { // G
111 { 0x025, 0x40, MODE_LCDC },
112 { 0x000, 0x20, MODE_A_BG, { 0x00, 0x01, 0x04, 0x05 } },
113 { 0x000, 0x10, MODE_A_OBJ, { 0x00, 0x01, 0x04, 0x05 } },
114 { 0x000, 0x01, MODE_3D_TEX_PAL, { 0x00, 0x01, 0x04, 0x05 } },
115 { 0x000, 0x02, MODE_A_BG_EXT_PAL, { 0x00, 0x02, 0x00, 0x02 } },
116 { 0x000, 0x01, MODE_A_OBJ_EXT_PAL},
117 },
118 { // H
119 { 0x026, 0x40, MODE_LCDC },
120 { 0x000, 0x04, MODE_B_BG },
121 { 0x000, 0x04, MODE_B_BG_EXT_PAL },
122 },
123 { // I
124 { 0x028, 0x40, MODE_LCDC },
125 { 0x002, 0x04, MODE_B_BG },
126 { 0x000, 0x01, MODE_B_OBJ },
127 { 0x000, 0x01, MODE_B_OBJ_EXT_PAL },
128 },
129};
130
131static struct DSVideoRenderer dummyRenderer = {
132 .init = DSVideoDummyRendererInit,
133 .reset = DSVideoDummyRendererReset,
134 .deinit = DSVideoDummyRendererDeinit,
135 .writeVideoRegister = DSVideoDummyRendererWriteVideoRegister,
136 .writePalette = DSVideoDummyRendererWritePalette,
137 .writeOAM = DSVideoDummyRendererWriteOAM,
138 .invalidateExtPal = DSVideoDummyRendererInvalidateExtPal,
139 .drawScanline = DSVideoDummyRendererDrawScanline,
140 .drawScanlineDirectly = DSVideoDummyRendererDrawScanlineDirectly,
141 .finishFrame = DSVideoDummyRendererFinishFrame,
142 .getPixels = DSVideoDummyRendererGetPixels,
143 .putPixels = DSVideoDummyRendererPutPixels,
144};
145
146void DSVideoInit(struct DSVideo* video) {
147 video->renderer = &dummyRenderer;
148 video->vram = NULL;
149 video->frameskip = 0;
150 video->event7.name = "DS7 Video";
151 video->event7.callback = NULL;
152 video->event7.context = video;
153 video->event7.priority = 8;
154 video->event9.name = "DS9 Video";
155 video->event9.callback = NULL;
156 video->event9.context = video;
157 video->event9.priority = 8;
158}
159
160void DSVideoReset(struct DSVideo* video) {
161 video->vcount = 0;
162 video->p->ds7.memory.io[DS_REG_VCOUNT >> 1] = video->vcount;
163 video->p->ds9.memory.io[DS_REG_VCOUNT >> 1] = video->vcount;
164
165 video->event7.callback = _startHblank7;
166 video->event9.callback = _startHblank9;
167 mTimingSchedule(&video->p->ds7.timing, &video->event7, DS_VIDEO_HORIZONTAL_LENGTH - DS7_VIDEO_HBLANK_LENGTH);
168 mTimingSchedule(&video->p->ds9.timing, &video->event9, (DS_VIDEO_HORIZONTAL_LENGTH - DS9_VIDEO_HBLANK_LENGTH) * 2);
169
170 video->frameCounter = 0;
171 video->frameskipCounter = 0;
172
173 if (video->vram) {
174 mappedMemoryFree(video->vram, DS_SIZE_VRAM);
175 }
176 video->vram = anonymousMemoryMap(DS_SIZE_VRAM);
177 video->renderer->vram = video->vram;
178
179 video->p->memory.vramBank[0] = &video->vram[0x00000];
180 video->p->memory.vramBank[1] = &video->vram[0x10000];
181 video->p->memory.vramBank[2] = &video->vram[0x20000];
182 video->p->memory.vramBank[3] = &video->vram[0x30000];
183 video->p->memory.vramBank[4] = &video->vram[0x40000];
184 video->p->memory.vramBank[5] = &video->vram[0x48000];
185 video->p->memory.vramBank[6] = &video->vram[0x4A000];
186 video->p->memory.vramBank[7] = &video->vram[0x4C000];
187 video->p->memory.vramBank[8] = &video->vram[0x50000];
188
189 video->renderer->deinit(video->renderer);
190 video->renderer->init(video->renderer);
191}
192
193void DSVideoAssociateRenderer(struct DSVideo* video, struct DSVideoRenderer* renderer) {
194 video->renderer->deinit(video->renderer);
195 video->renderer = renderer;
196 renderer->palette = video->palette;
197 renderer->vram = video->vram;
198 memcpy(renderer->vramABG, video->vramABG, sizeof(renderer->vramABG));
199 memcpy(renderer->vramAOBJ, video->vramAOBJ, sizeof(renderer->vramAOBJ));
200 memcpy(renderer->vramABGExtPal, video->vramABGExtPal, sizeof(renderer->vramABGExtPal));
201 renderer->vramAOBJExtPal = video->vramAOBJExtPal;
202 memcpy(renderer->vramBBG, video->vramBBG, sizeof(renderer->vramBBG));
203 memcpy(renderer->vramBOBJ, video->vramBOBJ, sizeof(renderer->vramBOBJ));
204 memcpy(renderer->vramBBGExtPal, video->vramBBGExtPal, sizeof(renderer->vramBBGExtPal));
205 renderer->vramBOBJExtPal = video->vramBOBJExtPal;
206 renderer->oam = &video->oam;
207 renderer->gx = &video->p->gx;
208 video->renderer->init(video->renderer);
209}
210
211void DSVideoDeinit(struct DSVideo* video) {
212 DSVideoAssociateRenderer(video, &dummyRenderer);
213 mappedMemoryFree(video->vram, DS_SIZE_VRAM);
214}
215
216static void _performCapture(struct DSVideo* video, int y) {
217 DSRegisterDISPCAPCNT dispcap = video->p->ds9.memory.io[DS9_REG_DISPCAPCNT_LO >> 1];
218 dispcap |= video->p->ds9.memory.io[DS9_REG_DISPCAPCNT_HI >> 1] << 16;
219 // TODO: Check mode
220 int block = DSRegisterDISPCAPCNTGetWriteBlock(dispcap);
221 if (!video->p->memory.vramMode[block][4]) {
222 return;
223 }
224 uint16_t* vram = &video->vram[0x10000 * block];
225 const color_t* pixelsA;
226 color_t pixels[DS_VIDEO_HORIZONTAL_PIXELS];
227 int width = DS_VIDEO_HORIZONTAL_PIXELS;
228 switch (DSRegisterDISPCAPCNTGetCaptureSize(dispcap)) {
229 case 0:
230 width = DS_VIDEO_HORIZONTAL_PIXELS / 2;
231 break;
232 case 1:
233 if (y >= 64) {
234 return;
235 }
236 case 2:
237 if (y >= 128) {
238 return;
239 }
240 default:
241 break;
242 }
243
244 if (DSRegisterDISPCAPCNTIsSourceA(dispcap)) {
245 // TODO: Process scanline regardless of output type
246 video->p->gx.renderer->getScanline(video->p->gx.renderer, y, &pixelsA);
247 } else {
248 video->renderer->drawScanlineDirectly(video->renderer, y, pixels);
249 pixelsA = pixels;
250 }
251
252 uint32_t base = DSRegisterDISPCAPCNTGetWriteOffset(dispcap) * 0x8000;
253 uint16_t pixel;
254 int x;
255 // TODO: Blending
256 for (x = 0; x < width; ++x) {
257 color_t colorA = pixelsA[x];
258#ifdef COLOR_16_BIT
259#ifdef COLOR_5_6_5
260 pixel = colorA & 0x1F;
261 pixel |= (colorA & 0xFFC0) >> 1;
262#else
263 pixel = colorA;
264#endif
265#else
266 pixel = (colorA >> 9) & 0x7C00;
267 pixel |= (colorA >> 6) & 0x03E0;
268 pixel |= (colorA >> 3) & 0x001F;
269#endif
270 STORE_16(pixel, ((x + y * DS_VIDEO_HORIZONTAL_PIXELS) * 2 + base) & 0x1FFFE, vram);
271 }
272}
273
274void _startHdraw7(struct mTiming* timing, void* context, uint32_t cyclesLate) {
275 struct DSVideo* video = context;
276 GBARegisterDISPSTAT dispstat = video->p->ds7.memory.io[DS_REG_DISPSTAT >> 1];
277 dispstat = GBARegisterDISPSTATClearInHblank(dispstat);
278 video->event7.callback = _startHblank7;
279 mTimingSchedule(timing, &video->event7, DS_VIDEO_HORIZONTAL_LENGTH - DS7_VIDEO_HBLANK_LENGTH - cyclesLate);
280
281 video->p->ds7.memory.io[DS_REG_VCOUNT >> 1] = video->vcount;
282
283 if (video->vcount == GBARegisterDISPSTATGetVcountSetting(dispstat)) {
284 dispstat = GBARegisterDISPSTATFillVcounter(dispstat);
285 if (GBARegisterDISPSTATIsVcounterIRQ(dispstat)) {
286 DSRaiseIRQ(video->p->ds7.cpu, video->p->ds7.memory.io, DS_IRQ_VCOUNTER);
287 }
288 } else {
289 dispstat = GBARegisterDISPSTATClearVcounter(dispstat);
290 }
291 video->p->ds7.memory.io[DS_REG_DISPSTAT >> 1] = dispstat;
292
293 switch (video->vcount) {
294 case DS_VIDEO_VERTICAL_PIXELS:
295 DSDMARunVblank(&video->p->ds7, -cyclesLate);
296 video->p->ds7.memory.io[DS_REG_DISPSTAT >> 1] = GBARegisterDISPSTATFillInVblank(dispstat);
297 if (GBARegisterDISPSTATIsVblankIRQ(dispstat)) {
298 DSRaiseIRQ(video->p->ds7.cpu, video->p->ds7.memory.io, DS_IRQ_VBLANK);
299 }
300 break;
301 case DS_VIDEO_VERTICAL_TOTAL_PIXELS - 1:
302 video->p->ds7.memory.io[DS_REG_DISPSTAT >> 1] = GBARegisterDISPSTATClearInVblank(dispstat);
303 break;
304 }
305}
306
307void _startHblank7(struct mTiming* timing, void* context, uint32_t cyclesLate) {
308 struct DSVideo* video = context;
309 GBARegisterDISPSTAT dispstat = video->p->ds7.memory.io[DS_REG_DISPSTAT >> 1];
310 dispstat = GBARegisterDISPSTATFillInHblank(dispstat);
311 video->event7.callback = _startHdraw7;
312 mTimingSchedule(timing, &video->event7, DS7_VIDEO_HBLANK_LENGTH - cyclesLate);
313
314 // Begin Hblank
315 dispstat = GBARegisterDISPSTATFillInHblank(dispstat);
316
317 if (GBARegisterDISPSTATIsHblankIRQ(dispstat)) {
318 DSRaiseIRQ(video->p->ds7.cpu, video->p->ds7.memory.io, DS_IRQ_HBLANK);
319 }
320 video->p->ds7.memory.io[DS_REG_DISPSTAT >> 1] = dispstat;
321}
322
323void _startHdraw9(struct mTiming* timing, void* context, uint32_t cyclesLate) {
324 struct DSVideo* video = context;
325 GBARegisterDISPSTAT dispstat = video->p->ds9.memory.io[DS_REG_DISPSTAT >> 1];
326 dispstat = GBARegisterDISPSTATClearInHblank(dispstat);
327 video->event9.callback = _startHblank9;
328 mTimingSchedule(timing, &video->event9, (DS_VIDEO_HORIZONTAL_LENGTH - DS9_VIDEO_HBLANK_LENGTH) * 2 - cyclesLate);
329
330 ++video->vcount;
331 if (video->vcount == DS_VIDEO_VERTICAL_TOTAL_PIXELS) {
332 video->vcount = 0;
333 }
334 video->p->ds9.memory.io[DS_REG_VCOUNT >> 1] = video->vcount;
335
336 if (video->vcount == GBARegisterDISPSTATGetVcountSetting(dispstat)) {
337 dispstat = GBARegisterDISPSTATFillVcounter(dispstat);
338 if (GBARegisterDISPSTATIsVcounterIRQ(dispstat)) {
339 DSRaiseIRQ(video->p->ds9.cpu, video->p->ds9.memory.io, DS_IRQ_VCOUNTER);
340 }
341 } else {
342 dispstat = GBARegisterDISPSTATClearVcounter(dispstat);
343 }
344 video->p->ds9.memory.io[DS_REG_DISPSTAT >> 1] = dispstat;
345
346 // Note: state may be recorded during callbacks, so ensure it is consistent!
347 switch (video->vcount) {
348 case 0:
349 DSFrameStarted(video->p);
350 video->inCapture = DSRegisterDISPCAPCNTIsEnable(video->p->ds9.memory.io[DS9_REG_DISPCAPCNT_HI >> 1] << 16);
351 break;
352 case DS_VIDEO_VERTICAL_PIXELS:
353 DSDMARunVblank(&video->p->ds9, -cyclesLate);
354 video->p->ds9.memory.io[DS_REG_DISPSTAT >> 1] = GBARegisterDISPSTATFillInVblank(dispstat);
355 video->p->ds9.memory.io[DS9_REG_DISPCAPCNT_HI >> 1] = DSRegisterDISPCAPCNTClearEnable(video->p->ds9.memory.io[DS9_REG_DISPCAPCNT_HI >> 1] << 16) >> 16;
356 if (video->frameskipCounter <= 0) {
357 video->renderer->finishFrame(video->renderer);
358 DSGXFlush(&video->p->gx);
359 }
360 if (GBARegisterDISPSTATIsVblankIRQ(dispstat)) {
361 DSRaiseIRQ(video->p->ds9.cpu, video->p->ds9.memory.io, DS_IRQ_VBLANK);
362 }
363 video->inCapture = false;
364 DSFrameEnded(video->p);
365 --video->frameskipCounter;
366 if (video->frameskipCounter < 0) {
367 mCoreSyncPostFrame(video->p->sync);
368 video->frameskipCounter = video->frameskip;
369 }
370 ++video->frameCounter;
371 break;
372 case DS_VIDEO_VERTICAL_TOTAL_PIXELS - 1:
373 video->p->ds9.memory.io[DS_REG_DISPSTAT >> 1] = GBARegisterDISPSTATClearInVblank(dispstat);
374 break;
375 }
376}
377
378void _startHblank9(struct mTiming* timing, void* context, uint32_t cyclesLate) {
379 struct DSVideo* video = context;
380 GBARegisterDISPSTAT dispstat = video->p->ds9.memory.io[DS_REG_DISPSTAT >> 1];
381 dispstat = GBARegisterDISPSTATFillInHblank(dispstat);
382 video->event9.callback = _startHdraw9;
383 mTimingSchedule(timing, &video->event9, (DS9_VIDEO_HBLANK_LENGTH * 2) - cyclesLate);
384
385 // Begin Hblank
386 dispstat = GBARegisterDISPSTATFillInHblank(dispstat);
387 if (video->frameskipCounter <= 0) {
388 if (video->vcount < DS_VIDEO_VERTICAL_PIXELS) {
389 video->renderer->drawScanline(video->renderer, video->vcount);
390 }
391 if (video->vcount < DS_VIDEO_VERTICAL_PIXELS - 48) {
392 video->p->gx.renderer->drawScanline(video->p->gx.renderer, video->vcount + 48);
393 }
394 if (video->vcount >= DS_VIDEO_VERTICAL_TOTAL_PIXELS - 48) {
395 video->p->gx.renderer->drawScanline(video->p->gx.renderer, video->vcount + 48 - DS_VIDEO_VERTICAL_TOTAL_PIXELS);
396 }
397 }
398 if (video->inCapture) {
399 _performCapture(video, video->vcount);
400 }
401
402 if (video->vcount < DS_VIDEO_VERTICAL_PIXELS) {
403 DSDMARunHblank(&video->p->ds9, -cyclesLate);
404 }
405 if (GBARegisterDISPSTATIsHblankIRQ(dispstat)) {
406 DSRaiseIRQ(video->p->ds9.cpu, video->p->ds9.memory.io, DS_IRQ_HBLANK);
407 }
408 video->p->ds9.memory.io[DS_REG_DISPSTAT >> 1] = dispstat;
409}
410
411void DSVideoWriteDISPSTAT(struct DSCommon* dscore, uint16_t value) {
412 dscore->memory.io[DS_REG_DISPSTAT >> 1] &= 0x7;
413 dscore->memory.io[DS_REG_DISPSTAT >> 1] |= value;
414 // TODO: Does a VCounter IRQ trigger on write?
415}
416
417void DSVideoConfigureVRAM(struct DS* ds, int index, uint8_t value, uint8_t oldValue) {
418 struct DSMemory* memory = &ds->memory;
419 if (value == oldValue) {
420 return;
421 }
422 uint32_t i, j;
423 uint32_t size = _vramSize[index] >> DS_VRAM_OFFSET;
424 struct DSVRAMBankInfo oldInfo = _vramInfo[index][oldValue & 0x7];
425 uint32_t offset = oldInfo.base + oldInfo.offset[(oldValue >> 3) & 3];
426 switch (oldInfo.mode) {
427 case MODE_A_BG:
428 for (i = 0; i < size; ++i) {
429 if (ds->video.vramABG[offset + i] == &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)]) {
430 ds->video.vramABG[offset + i] = NULL;
431 ds->video.renderer->vramABG[offset + i] = NULL;
432 }
433 }
434 break;
435 case MODE_B_BG:
436 for (i = 0; i < size; ++i) {
437 if (ds->video.vramBBG[offset + i] == &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)]) {
438 ds->video.vramBBG[offset + i] = NULL;
439 ds->video.renderer->vramBBG[offset + i] = NULL;
440 }
441 }
442 break;
443 case MODE_A_OBJ:
444 for (i = 0; i < size; ++i) {
445 if (ds->video.vramAOBJ[offset + i] == &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)]) {
446 ds->video.vramAOBJ[offset + i] = NULL;
447 ds->video.renderer->vramAOBJ[offset + i] = NULL;
448 }
449 }
450 break;
451 case MODE_B_OBJ:
452 for (i = 0; i < size; ++i) {
453 if (ds->video.vramBOBJ[offset + i] == &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)]) {
454 ds->video.vramBOBJ[offset + i] = NULL;
455 ds->video.renderer->vramBOBJ[offset + i] = NULL;
456 }
457 }
458 break;
459 case MODE_A_BG_EXT_PAL:
460 for (i = 0; i < oldInfo.mirrorSize; ++i) {
461 if (ds->video.vramABGExtPal[offset + i] == &memory->vramBank[index][i << 12]) {
462 ds->video.vramABGExtPal[offset + i] = NULL;
463 ds->video.renderer->vramABGExtPal[offset + i] = NULL;
464 ds->video.renderer->invalidateExtPal(ds->video.renderer, false, false, offset + i);
465 }
466 }
467 break;
468 case MODE_B_BG_EXT_PAL:
469 for (i = 0; i < oldInfo.mirrorSize; ++i) {
470 if (ds->video.vramBBGExtPal[offset + i] == &memory->vramBank[index][i << 12]) {
471 ds->video.vramBBGExtPal[offset + i] = NULL;
472 ds->video.renderer->vramBBGExtPal[offset + i] = NULL;
473 ds->video.renderer->invalidateExtPal(ds->video.renderer, false, true, offset + i);
474 }
475 }
476 break;
477 case MODE_A_OBJ_EXT_PAL:
478 if (ds->video.vramAOBJExtPal == memory->vramBank[index]) {
479 ds->video.vramAOBJExtPal = NULL;
480 ds->video.renderer->vramAOBJExtPal = NULL;
481 ds->video.renderer->invalidateExtPal(ds->video.renderer, true, false, 0);
482 }
483 break;
484 case MODE_B_OBJ_EXT_PAL:
485 if (ds->video.vramBOBJExtPal == memory->vramBank[index]) {
486 ds->video.vramBOBJExtPal = NULL;
487 ds->video.renderer->vramBOBJExtPal = NULL;
488 ds->video.renderer->invalidateExtPal(ds->video.renderer, true, true, 0);
489 }
490 break;
491 case MODE_3D_TEX:
492 if (ds->gx.tex[offset] == memory->vramBank[index]) {
493 ds->gx.tex[offset] = NULL;
494 ds->gx.renderer->tex[offset] = NULL;
495 ds->gx.renderer->invalidateTex(ds->gx.renderer, offset);
496 }
497 break;
498 case MODE_3D_TEX_PAL:
499 for (i = 0; i < oldInfo.mirrorSize; ++i) {
500 if (ds->gx.texPal[offset + i] == &memory->vramBank[index][i << 13]) {
501 ds->gx.texPal[offset + i] = NULL;
502 ds->gx.renderer->texPal[offset + i] = NULL;
503 }
504 }
505 break;
506 case MODE_7_VRAM:
507 for (i = 0; i < size; i += 16) {
508 ds->memory.vram7[(offset + i) >> 4] = NULL;
509 }
510 break;
511 case MODE_LCDC:
512 break;
513 }
514
515 struct DSVRAMBankInfo info = _vramInfo[index][value & 0x7];
516 memset(&memory->vramMirror[index], 0, sizeof(memory->vramMirror[index]));
517 memset(&memory->vramMode[index], 0, sizeof(memory->vramMode[index]));
518 if (!(value & 0x80) || !info.mirrorSize) {
519 return;
520 }
521 offset = info.base + info.offset[(value >> 3) & 3];
522 if (info.mode <= MODE_LCDC) {
523 memory->vramMode[index][info.mode] = 0xFFFF;
524 for (j = offset; j < 0x40; j += info.mirrorSize) {
525 for (i = 0; i < size; ++i) {
526 memory->vramMirror[index][i + j] = 1 << index;
527 }
528 }
529 }
530 switch (info.mode) {
531 case MODE_A_BG:
532 for (i = 0; i < size; ++i) {
533 ds->video.vramABG[offset + i] = &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)];
534 ds->video.renderer->vramABG[offset + i] = ds->video.vramABG[offset + i];
535 }
536 break;
537 case MODE_B_BG:
538 for (i = 0; i < size; ++i) {
539 ds->video.vramBBG[offset + i] = &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)];
540 ds->video.renderer->vramBBG[offset + i] = ds->video.vramBBG[offset + i];
541 }
542 break;
543 case MODE_A_OBJ:
544 for (i = 0; i < size; ++i) {
545 ds->video.vramAOBJ[offset + i] = &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)];
546 ds->video.renderer->vramAOBJ[offset + i] = ds->video.vramAOBJ[offset + i];
547 }
548 break;
549 case MODE_B_OBJ:
550 for (i = 0; i < size; ++i) {
551 ds->video.vramBOBJ[offset + i] = &memory->vramBank[index][i << (DS_VRAM_OFFSET - 1)];
552 ds->video.renderer->vramBOBJ[offset + i] = ds->video.vramBOBJ[offset + i];
553 }
554 break;
555 case MODE_A_BG_EXT_PAL:
556 for (i = 0; i < info.mirrorSize; ++i) {
557 ds->video.vramABGExtPal[offset + i] = &memory->vramBank[index][i << 12];
558 ds->video.renderer->vramABGExtPal[offset + i] = ds->video.vramABGExtPal[offset + i];
559 ds->video.renderer->invalidateExtPal(ds->video.renderer, false, false, offset + i);
560 }
561 break;
562 case MODE_B_BG_EXT_PAL:
563 for (i = 0; i < info.mirrorSize; ++i) {
564 ds->video.vramBBGExtPal[offset + i] = &memory->vramBank[index][i << 12];
565 ds->video.renderer->vramBBGExtPal[offset + i] = ds->video.vramBBGExtPal[offset + i];
566 ds->video.renderer->invalidateExtPal(ds->video.renderer, false, true, offset + i);
567 }
568 break;
569 case MODE_A_OBJ_EXT_PAL:
570 ds->video.vramAOBJExtPal = memory->vramBank[index];
571 ds->video.renderer->vramAOBJExtPal = ds->video.vramAOBJExtPal;
572 ds->video.renderer->invalidateExtPal(ds->video.renderer, true, false, 0);
573 break;
574 case MODE_B_OBJ_EXT_PAL:
575 ds->video.vramBOBJExtPal = memory->vramBank[index];
576 ds->video.renderer->vramBOBJExtPal = ds->video.vramBOBJExtPal;
577 ds->video.renderer->invalidateExtPal(ds->video.renderer, true, true, 0);
578 break;
579 case MODE_3D_TEX:
580 ds->gx.tex[offset] = memory->vramBank[index];
581 ds->gx.renderer->tex[offset] = ds->gx.tex[offset];
582 ds->gx.renderer->invalidateTex(ds->gx.renderer, offset);
583 break;
584 case MODE_3D_TEX_PAL:
585 for (i = 0; i < info.mirrorSize; ++i) {
586 ds->gx.texPal[offset + i] = &memory->vramBank[index][i << 13];
587 ds->gx.renderer->texPal[offset + i] = ds->gx.texPal[offset + i];
588 }
589 break;
590 case MODE_7_VRAM:
591 for (i = 0; i < size; i += 16) {
592 ds->memory.vram7[(offset + i) >> 4] = &memory->vramBank[index][i << (DS_VRAM_OFFSET - 5)];
593 }
594 break;
595 case MODE_LCDC:
596 break;
597 }
598}
599
600static void DSVideoDummyRendererInit(struct DSVideoRenderer* renderer) {
601 UNUSED(renderer);
602 // Nothing to do
603}
604
605static void DSVideoDummyRendererReset(struct DSVideoRenderer* renderer) {
606 UNUSED(renderer);
607 // Nothing to do
608}
609
610static void DSVideoDummyRendererDeinit(struct DSVideoRenderer* renderer) {
611 UNUSED(renderer);
612 // Nothing to do
613}
614
615static uint16_t DSVideoDummyRendererWriteVideoRegister(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value) {
616 UNUSED(renderer);
617 return value;
618}
619
620static void DSVideoDummyRendererWritePalette(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value) {
621 UNUSED(renderer);
622 UNUSED(address);
623 UNUSED(value);
624 // Nothing to do
625}
626
627static void DSVideoDummyRendererWriteOAM(struct DSVideoRenderer* renderer, uint32_t oam) {
628 UNUSED(renderer);
629 UNUSED(oam);
630 // Nothing to do
631}
632
633static void DSVideoDummyRendererInvalidateExtPal(struct DSVideoRenderer* renderer, bool obj, bool engB, int slot) {
634 UNUSED(renderer);
635 UNUSED(obj);
636 UNUSED(engB);
637 // Nothing to do
638}
639
640static void DSVideoDummyRendererDrawScanline(struct DSVideoRenderer* renderer, int y) {
641 UNUSED(renderer);
642 UNUSED(y);
643 // Nothing to do
644}
645
646static void DSVideoDummyRendererDrawScanlineDirectly(struct DSVideoRenderer* renderer, int y, color_t* scanline) {
647 UNUSED(renderer);
648 UNUSED(y);
649 UNUSED(scanline);
650 // Nothing to do
651}
652
653static void DSVideoDummyRendererFinishFrame(struct DSVideoRenderer* renderer) {
654 UNUSED(renderer);
655 // Nothing to do
656}
657
658static void DSVideoDummyRendererGetPixels(struct DSVideoRenderer* renderer, size_t* stride, const void** pixels) {
659 UNUSED(renderer);
660 UNUSED(stride);
661 UNUSED(pixels);
662 // Nothing to do
663}
664
665static void DSVideoDummyRendererPutPixels(struct DSVideoRenderer* renderer, size_t stride, const void* pixels) {
666 UNUSED(renderer);
667 UNUSED(stride);
668 UNUSED(pixels);
669 // Nothing to do
670}