src/gb/renderers/software.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/renderers/software.h>
7
8#include <mgba/core/cache-set.h>
9#include <mgba/internal/gb/io.h>
10#include <mgba/internal/gb/renderers/cache-set.h>
11#include <mgba-util/math.h>
12#include <mgba-util/memory.h>
13
14static void GBVideoSoftwareRendererInit(struct GBVideoRenderer* renderer, enum GBModel model, bool borders);
15static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer);
16static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value);
17static void GBVideoSoftwareRendererWriteSGBPacket(struct GBVideoRenderer* renderer, uint8_t* data);
18static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value);
19static void GBVideoSoftwareRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address);
20static void GBVideoSoftwareRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam);
21static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax);
22static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y);
23static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer);
24static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels);
25static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels);
26
27static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy);
28static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y);
29
30static void _clearScreen(struct GBVideoSoftwareRenderer* renderer) {
31 size_t sgbOffset = 0;
32 if (renderer->model == GB_MODEL_SGB) {
33 return;
34 }
35 int y;
36 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS; ++y) {
37 color_t* row = &renderer->outputBuffer[renderer->outputBufferStride * y + sgbOffset];
38 int x;
39 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS; x += 4) {
40 row[x + 0] = renderer->palette[0];
41 row[x + 1] = renderer->palette[0];
42 row[x + 2] = renderer->palette[0];
43 row[x + 3] = renderer->palette[0];
44 }
45 }
46}
47
48static void _regenerateSGBBorder(struct GBVideoSoftwareRenderer* renderer) {
49 int i;
50 for (i = 0; i < 0x40; ++i) {
51 uint16_t color;
52 LOAD_16LE(color, 0x800 + i * 2, renderer->d.sgbMapRam);
53 renderer->d.writePalette(&renderer->d, i + 0x40, color);
54 }
55 int x, y;
56 for (y = 0; y < 224; ++y) {
57 for (x = 0; x < 256; x += 8) {
58 if (x >= 48 && x < 208 && y >= 40 && y < 104) {
59 continue;
60 }
61 uint16_t mapData;
62 LOAD_16LE(mapData, (x >> 2) + (y & ~7) * 8, renderer->d.sgbMapRam);
63 if (UNLIKELY(SGBBgAttributesGetTile(mapData) >= 0x100)) {
64 continue;
65 }
66
67 int localY = y & 0x7;
68 if (SGBBgAttributesIsYFlip(mapData)) {
69 localY = 7 - localY;
70 }
71 uint8_t tileData[4];
72 tileData[0] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x00];
73 tileData[1] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x01];
74 tileData[2] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x10];
75 tileData[3] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x11];
76
77 size_t base = y * renderer->outputBufferStride + x;
78 int paletteBase = SGBBgAttributesGetPalette(mapData) * 0x10;
79 int colorSelector;
80
81 if (SGBBgAttributesIsXFlip(mapData)) {
82 for (i = 0; i < 8; ++i) {
83 colorSelector = (tileData[0] >> i & 0x1) << 0 | (tileData[1] >> i & 0x1) << 1 | (tileData[2] >> i & 0x1) << 2 | (tileData[3] >> i & 0x1) << 3;
84 renderer->outputBuffer[base + i] = renderer->palette[paletteBase | colorSelector];
85 }
86 } else {
87 for (i = 7; i >= 0; --i) {
88 colorSelector = (tileData[0] >> i & 0x1) << 0 | (tileData[1] >> i & 0x1) << 1 | (tileData[2] >> i & 0x1) << 2 | (tileData[3] >> i & 0x1) << 3;
89 renderer->outputBuffer[base + 7 - i] = renderer->palette[paletteBase | colorSelector];
90 }
91 }
92 }
93 }
94}
95
96static inline void _setAttribute(uint8_t* sgbAttributes, unsigned x, unsigned y, int palette) {
97 int p = sgbAttributes[(x >> 2) + 5 * y];
98 p &= ~(3 << (2 * (3 - (x & 3))));
99 p |= palette << (2 * (3 - (x & 3)));
100 sgbAttributes[(x >> 2) + 5 * y] = p;
101}
102
103static void _parseAttrBlock(struct GBVideoSoftwareRenderer* renderer, int start) {
104 uint8_t block[6];
105 memcpy(block, &renderer->sgbPacket[start], 6);
106 unsigned x0 = block[2];
107 unsigned x1 = block[4];
108 unsigned y0 = block[3];
109 unsigned y1 = block[5];
110 unsigned x, y;
111 int pIn = block[1] & 3;
112 int pPerim = (block[1] >> 2) & 3;
113 int pOut = (block[1] >> 4) & 3;
114
115 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS / 8; ++y) {
116 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++x) {
117 if (y > y0 && y < y1 && x > x0 && x < x1) {
118 if (block[0] & 1) {
119 _setAttribute(renderer->d.sgbAttributes, x, y, pIn);
120 }
121 } else if (y < y0 || y > y1 || x < x0 || x > x1) {
122 if (block[0] & 4) {
123 _setAttribute(renderer->d.sgbAttributes, x, y, pOut);
124 }
125 } else {
126 if (block[0] & 2) {
127 _setAttribute(renderer->d.sgbAttributes, x, y, pPerim);
128 } else if (block[0] & 1) {
129 _setAttribute(renderer->d.sgbAttributes, x, y, pIn);
130 } else if (block[0] & 4) {
131 _setAttribute(renderer->d.sgbAttributes, x, y, pOut);
132 }
133 }
134 }
135 }
136}
137
138static void _parseAttrLine(struct GBVideoSoftwareRenderer* renderer, int start) {
139 uint8_t byte = renderer->sgbPacket[start];
140 unsigned line = byte & 0x1F;
141 int pal = (byte >> 5) & 3;
142
143 if (byte & 0x80) {
144 if (line > GB_VIDEO_VERTICAL_PIXELS / 8) {
145 return;
146 }
147 int x;
148 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++x) {
149 _setAttribute(renderer->d.sgbAttributes, x, line, pal);
150 }
151 } else {
152 if (line > GB_VIDEO_HORIZONTAL_PIXELS / 8) {
153 return;
154 }
155 int y;
156 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS / 8; ++y) {
157 _setAttribute(renderer->d.sgbAttributes, line, y, pal);
158 }
159 }
160}
161
162static bool _inWindow(struct GBVideoSoftwareRenderer* renderer) {
163 return GBRegisterLCDCIsWindow(renderer->lcdc) && GB_VIDEO_HORIZONTAL_PIXELS + 7 > renderer->wx;
164}
165
166void GBVideoSoftwareRendererCreate(struct GBVideoSoftwareRenderer* renderer) {
167 renderer->d.init = GBVideoSoftwareRendererInit;
168 renderer->d.deinit = GBVideoSoftwareRendererDeinit;
169 renderer->d.writeVideoRegister = GBVideoSoftwareRendererWriteVideoRegister;
170 renderer->d.writeSGBPacket = GBVideoSoftwareRendererWriteSGBPacket;
171 renderer->d.writePalette = GBVideoSoftwareRendererWritePalette;
172 renderer->d.writeVRAM = GBVideoSoftwareRendererWriteVRAM;
173 renderer->d.writeOAM = GBVideoSoftwareRendererWriteOAM;
174 renderer->d.drawRange = GBVideoSoftwareRendererDrawRange;
175 renderer->d.finishScanline = GBVideoSoftwareRendererFinishScanline;
176 renderer->d.finishFrame = GBVideoSoftwareRendererFinishFrame;
177 renderer->d.getPixels = GBVideoSoftwareRendererGetPixels;
178 renderer->d.putPixels = GBVideoSoftwareRendererPutPixels;
179
180 renderer->d.disableBG = false;
181 renderer->d.disableOBJ = false;
182 renderer->d.disableWIN = false;
183
184 renderer->temporaryBuffer = 0;
185}
186
187static void GBVideoSoftwareRendererInit(struct GBVideoRenderer* renderer, enum GBModel model, bool sgbBorders) {
188 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
189 softwareRenderer->lcdc = 0;
190 softwareRenderer->scy = 0;
191 softwareRenderer->scx = 0;
192 softwareRenderer->wy = 0;
193 softwareRenderer->currentWy = 0;
194 softwareRenderer->lastY = 0;
195 softwareRenderer->hasWindow = false;
196 softwareRenderer->wx = 0;
197 softwareRenderer->model = model;
198 softwareRenderer->sgbTransfer = 0;
199 softwareRenderer->sgbCommandHeader = 0;
200 softwareRenderer->sgbBorders = sgbBorders;
201 softwareRenderer->objOffsetX = 0;
202 softwareRenderer->objOffsetY = 0;
203 softwareRenderer->offsetScx = 0;
204 softwareRenderer->offsetScy = 0;
205 softwareRenderer->offsetWx = 0;
206 softwareRenderer->offsetWy = 0;
207
208 int i;
209 for (i = 0; i < 64; ++i) {
210 softwareRenderer->lookup[i] = i;
211 softwareRenderer->lookup[i] = i;
212 softwareRenderer->lookup[i] = i;
213 softwareRenderer->lookup[i] = i;
214 }
215}
216
217static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer) {
218 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
219 UNUSED(softwareRenderer);
220}
221
222static void GBVideoSoftwareRendererUpdateWindow(struct GBVideoSoftwareRenderer* renderer, bool before, bool after) {
223 if (renderer->lastY >= GB_VIDEO_VERTICAL_PIXELS || after == before) {
224 return;
225 }
226 if (renderer->lastY >= renderer->wy) {
227 if (!after) {
228 renderer->currentWy -= renderer->lastY;
229 renderer->hasWindow = true;
230 } else {
231 if (!renderer->hasWindow) {
232 if (renderer->lastY > renderer->wy) {
233 renderer->currentWy = GB_VIDEO_VERTICAL_PIXELS;
234 } else {
235 renderer->currentWy = renderer->lastY - renderer->wy;
236 }
237 } else {
238 renderer->currentWy += renderer->lastY;
239 }
240 }
241 }
242}
243
244static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value) {
245 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
246 if (renderer->cache) {
247 GBVideoCacheWriteVideoRegister(renderer->cache, address, value);
248 }
249 bool wasWindow = _inWindow(softwareRenderer);
250 switch (address) {
251 case REG_LCDC:
252 softwareRenderer->lcdc = value;
253 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
254 break;
255 case REG_SCY:
256 softwareRenderer->scy = value;
257 break;
258 case REG_SCX:
259 softwareRenderer->scx = value;
260 break;
261 case REG_WY:
262 softwareRenderer->wy = value;
263 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
264 break;
265 case REG_WX:
266 softwareRenderer->wx = value;
267 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
268 break;
269 case REG_BGP:
270 softwareRenderer->lookup[0] = value & 3;
271 softwareRenderer->lookup[1] = (value >> 2) & 3;
272 softwareRenderer->lookup[2] = (value >> 4) & 3;
273 softwareRenderer->lookup[3] = (value >> 6) & 3;
274 break;
275 case REG_OBP0:
276 softwareRenderer->lookup[0x20 + 0] = value & 3;
277 softwareRenderer->lookup[0x20 + 1] = (value >> 2) & 3;
278 softwareRenderer->lookup[0x20 + 2] = (value >> 4) & 3;
279 softwareRenderer->lookup[0x20 + 3] = (value >> 6) & 3;
280 break;
281 case REG_OBP1:
282 softwareRenderer->lookup[0x24 + 0] = value & 3;
283 softwareRenderer->lookup[0x24 + 1] = (value >> 2) & 3;
284 softwareRenderer->lookup[0x24 + 2] = (value >> 4) & 3;
285 softwareRenderer->lookup[0x24 + 3] = (value >> 6) & 3;
286 break;
287 }
288 return value;
289}
290
291static void GBVideoSoftwareRendererWriteSGBPacket(struct GBVideoRenderer* renderer, uint8_t* data) {
292 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
293 memcpy(softwareRenderer->sgbPacket, data, sizeof(softwareRenderer->sgbPacket));
294 int i;
295 softwareRenderer->sgbCommandHeader = data[0];
296 softwareRenderer->sgbTransfer = 0;
297 int set;
298 int sets;
299 int attrX;
300 int attrY;
301 int attrDirection;
302 int pBefore;
303 int pAfter;
304 int pDiv;
305 switch (softwareRenderer->sgbCommandHeader >> 3) {
306 case SGB_PAL_SET:
307 softwareRenderer->sgbPacket[1] = data[9];
308 if (!(data[9] & 0x80)) {
309 break;
310 }
311 // Fall through
312 case SGB_ATTR_SET:
313 set = softwareRenderer->sgbPacket[1] & 0x3F;
314 if (set <= 0x2C) {
315 memcpy(renderer->sgbAttributes, &renderer->sgbAttributeFiles[set * 90], 90);
316 }
317 break;
318 case SGB_ATTR_BLK:
319 sets = softwareRenderer->sgbPacket[1];
320 i = 2;
321 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; i += 6, --sets) {
322 _parseAttrBlock(softwareRenderer, i);
323 }
324 break;
325 case SGB_ATTR_LIN:
326 sets = softwareRenderer->sgbPacket[1];
327 i = 2;
328 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; ++i, --sets) {
329 _parseAttrLine(softwareRenderer, i);
330 }
331 break;
332 case SGB_ATTR_DIV:
333 pAfter = softwareRenderer->sgbPacket[1] & 3;
334 pBefore = (softwareRenderer->sgbPacket[1] >> 2) & 3;
335 pDiv = (softwareRenderer->sgbPacket[1] >> 4) & 3;
336 attrX = softwareRenderer->sgbPacket[2];
337 if (softwareRenderer->sgbPacket[1] & 0x40) {
338 if (attrX > GB_VIDEO_VERTICAL_PIXELS / 8) {
339 attrX = GB_VIDEO_VERTICAL_PIXELS / 8;
340 }
341 int j;
342 for (j = 0; j < attrX; ++j) {
343 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
344 _setAttribute(renderer->sgbAttributes, i, j, pBefore);
345 }
346 }
347 if (attrX < GB_VIDEO_VERTICAL_PIXELS / 8) {
348 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
349 _setAttribute(renderer->sgbAttributes, i, attrX, pDiv);
350 }
351
352 }
353 for (; j < GB_VIDEO_VERTICAL_PIXELS / 8; ++j) {
354 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
355 _setAttribute(renderer->sgbAttributes, i, j, pAfter);
356 }
357 }
358 } else {
359 if (attrX > GB_VIDEO_HORIZONTAL_PIXELS / 8) {
360 attrX = GB_VIDEO_HORIZONTAL_PIXELS / 8;
361 }
362 int j;
363 for (j = 0; j < attrX; ++j) {
364 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
365 _setAttribute(renderer->sgbAttributes, j, i, pBefore);
366 }
367 }
368 if (attrX < GB_VIDEO_HORIZONTAL_PIXELS / 8) {
369 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS / 8; ++i) {
370 _setAttribute(renderer->sgbAttributes, attrX, i, pDiv);
371 }
372
373 }
374 for (; j < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++j) {
375 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS / 8; ++i) {
376 _setAttribute(renderer->sgbAttributes, j, i, pAfter);
377 }
378 }
379 }
380 break;
381 case SGB_ATTR_CHR:
382 attrX = softwareRenderer->sgbPacket[1];
383 attrY = softwareRenderer->sgbPacket[2];
384 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
385 attrX = 0;
386 }
387 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
388 attrY = 0;
389 }
390 sets = softwareRenderer->sgbPacket[3];
391 sets |= softwareRenderer->sgbPacket[4] << 8;
392 attrDirection = softwareRenderer->sgbPacket[5];
393 i = 6;
394 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; ++i) {
395 int j;
396 for (j = 0; j < 4 && sets; ++j, --sets) {
397 uint8_t p = softwareRenderer->sgbPacket[i] >> (6 - j * 2);
398 _setAttribute(renderer->sgbAttributes, attrX, attrY, p & 3);
399 if (attrDirection) {
400 ++attrY;
401 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
402 attrY = 0;
403 ++attrX;
404 }
405 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
406 attrX = 0;
407 }
408 } else {
409 ++attrX;
410 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
411 attrX = 0;
412 ++attrY;
413 }
414 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
415 attrY = 0;
416 }
417 }
418 }
419 }
420
421 break;
422 case SGB_ATRC_EN:
423 case SGB_MASK_EN:
424 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
425 _regenerateSGBBorder(softwareRenderer);
426 }
427 }
428}
429
430static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value) {
431 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
432 color_t color = mColorFrom555(value);
433 if (softwareRenderer->model == GB_MODEL_SGB) {
434 if (index < 0x10 && index && !(index & 3)) {
435 color = softwareRenderer->palette[0];
436 } else if (index >= 0x40 && !(index & 0xF)) {
437 color = softwareRenderer->palette[0];
438 }
439 }
440 if (renderer->cache) {
441 mCacheSetWritePalette(renderer->cache, index, color);
442 }
443 if (softwareRenderer->model == GB_MODEL_AGB) {
444 unsigned r = M_R5(value);
445 unsigned g = M_G5(value);
446 unsigned b = M_B5(value);
447 r = r * r;
448 g = g * g;
449 b = b * b;
450#ifdef COLOR_16_BIT
451 r /= 31;
452 g /= 31;
453 b /= 31;
454 color = mColorFrom555(r | (g << 5) | (b << 10));
455#else
456 r >>= 2;
457 g >>= 2;
458 b >>= 2;
459 color = r | (g << 8) | (b << 16);
460#endif
461 }
462 softwareRenderer->palette[index] = color;
463
464 if (softwareRenderer->model == GB_MODEL_SGB && !index && GBRegisterLCDCIsEnable(softwareRenderer->lcdc)) {
465 renderer->writePalette(renderer, 0x04, value);
466 renderer->writePalette(renderer, 0x08, value);
467 renderer->writePalette(renderer, 0x0C, value);
468 renderer->writePalette(renderer, 0x40, value);
469 renderer->writePalette(renderer, 0x50, value);
470 renderer->writePalette(renderer, 0x60, value);
471 renderer->writePalette(renderer, 0x70, value);
472 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
473 _regenerateSGBBorder(softwareRenderer);
474 }
475 }
476}
477
478static void GBVideoSoftwareRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address) {
479 if (renderer->cache) {
480 mCacheSetWriteVRAM(renderer->cache, address);
481 }
482}
483
484static void GBVideoSoftwareRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam) {
485 UNUSED(renderer);
486 UNUSED(oam);
487 // Nothing to do
488}
489
490static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax) {
491 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
492 softwareRenderer->lastY = y;
493 uint8_t* maps = &softwareRenderer->d.vram[GB_BASE_MAP];
494 if (GBRegisterLCDCIsTileMap(softwareRenderer->lcdc)) {
495 maps += GB_SIZE_MAP;
496 }
497 if (softwareRenderer->d.disableBG) {
498 memset(&softwareRenderer->row[startX], 0, endX - startX);
499 }
500 if (GBRegisterLCDCIsBgEnable(softwareRenderer->lcdc) || softwareRenderer->model >= GB_MODEL_CGB) {
501 int wy = softwareRenderer->wy + softwareRenderer->currentWy;
502 if (GBRegisterLCDCIsWindow(softwareRenderer->lcdc) && wy <= y && endX >= softwareRenderer->wx - 7) {
503 if (softwareRenderer->wx - 7 > 0 && !softwareRenderer->d.disableBG) {
504 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, softwareRenderer->wx - 7, softwareRenderer->scx - softwareRenderer->offsetScx, softwareRenderer->scy + y - softwareRenderer->offsetScy);
505 }
506
507 maps = &softwareRenderer->d.vram[GB_BASE_MAP];
508 if (GBRegisterLCDCIsWindowTileMap(softwareRenderer->lcdc)) {
509 maps += GB_SIZE_MAP;
510 }
511 if (!softwareRenderer->d.disableWIN) {
512 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, softwareRenderer->wx - 7, endX, 7 - softwareRenderer->wx - softwareRenderer->offsetWx, y - wy - softwareRenderer->offsetWy);
513 }
514 } else if (!softwareRenderer->d.disableBG) {
515 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, endX, softwareRenderer->scx - softwareRenderer->offsetScx, softwareRenderer->scy + y - softwareRenderer->offsetScy);
516 }
517 } else if (!softwareRenderer->d.disableBG) {
518 memset(&softwareRenderer->row[startX], 0, endX - startX);
519 }
520
521 if (GBRegisterLCDCIsObjEnable(softwareRenderer->lcdc) && !softwareRenderer->d.disableOBJ) {
522 size_t i;
523 for (i = 0; i < oamMax; ++i) {
524 GBVideoSoftwareRendererDrawObj(softwareRenderer, &obj[i], startX, endX, y);
525 }
526 }
527
528 size_t sgbOffset = 0;
529 if (softwareRenderer->model == GB_MODEL_SGB && softwareRenderer->sgbBorders) {
530 sgbOffset = softwareRenderer->outputBufferStride * 40 + 48;
531 }
532 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y + sgbOffset];
533 int x = startX;
534 int p = 0;
535 switch (softwareRenderer->d.sgbRenderMode) {
536 case 0:
537 if (softwareRenderer->model == GB_MODEL_SGB) {
538 p = softwareRenderer->d.sgbAttributes[(startX >> 5) + 5 * (y >> 3)];
539 p >>= 6 - ((x / 4) & 0x6);
540 p &= 3;
541 p <<= 2;
542 }
543 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
544 row[x] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
545 }
546 for (; x + 7 < (endX & ~7); x += 8) {
547 if (softwareRenderer->model == GB_MODEL_SGB) {
548 p = softwareRenderer->d.sgbAttributes[(x >> 5) + 5 * (y >> 3)];
549 p >>= 6 - ((x / 4) & 0x6);
550 p &= 3;
551 p <<= 2;
552 }
553 row[x + 0] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
554 row[x + 1] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 1] & 0x7F]];
555 row[x + 2] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 2] & 0x7F]];
556 row[x + 3] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 3] & 0x7F]];
557 row[x + 4] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 4] & 0x7F]];
558 row[x + 5] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 5] & 0x7F]];
559 row[x + 6] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 6] & 0x7F]];
560 row[x + 7] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 7] & 0x7F]];
561 }
562 if (softwareRenderer->model == GB_MODEL_SGB) {
563 p = softwareRenderer->d.sgbAttributes[(x >> 5) + 5 * (y >> 3)];
564 p >>= 6 - ((x / 4) & 0x6);
565 p &= 3;
566 p <<= 2;
567 }
568 for (; x < endX; ++x) {
569 row[x] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
570 }
571 break;
572 case 1:
573 break;
574 case 2:
575 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
576 row[x] = 0;
577 }
578 for (; x + 7 < (endX & ~7); x += 8) {
579 row[x] = 0;
580 row[x + 1] = 0;
581 row[x + 2] = 0;
582 row[x + 3] = 0;
583 row[x + 4] = 0;
584 row[x + 5] = 0;
585 row[x + 6] = 0;
586 row[x + 7] = 0;
587 }
588 for (; x < endX; ++x) {
589 row[x] = 0;
590 }
591 break;
592 case 3:
593 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
594 row[x] = softwareRenderer->palette[0];
595 }
596 for (; x + 7 < (endX & ~7); x += 8) {
597 row[x] = softwareRenderer->palette[0];
598 row[x + 1] = softwareRenderer->palette[0];
599 row[x + 2] = softwareRenderer->palette[0];
600 row[x + 3] = softwareRenderer->palette[0];
601 row[x + 4] = softwareRenderer->palette[0];
602 row[x + 5] = softwareRenderer->palette[0];
603 row[x + 6] = softwareRenderer->palette[0];
604 row[x + 7] = softwareRenderer->palette[0];
605 }
606 for (; x < endX; ++x) {
607 row[x] = softwareRenderer->palette[0];
608 }
609 break;
610 }
611}
612
613static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y) {
614 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
615
616 if (softwareRenderer->sgbTransfer == 1) {
617 size_t offset = 2 * ((y & 7) + (y >> 3) * GB_VIDEO_HORIZONTAL_PIXELS);
618 if (offset >= 0x1000) {
619 return;
620 }
621 uint8_t* buffer = NULL;
622 switch (softwareRenderer->sgbCommandHeader >> 3) {
623 case SGB_PAL_TRN:
624 buffer = renderer->sgbPalRam;
625 break;
626 case SGB_CHR_TRN:
627 buffer = &renderer->sgbCharRam[SGB_SIZE_CHAR_RAM / 2 * (softwareRenderer->sgbPacket[1] & 1)];
628 break;
629 case SGB_PCT_TRN:
630 buffer = renderer->sgbMapRam;
631 break;
632 case SGB_ATTR_TRN:
633 buffer = renderer->sgbAttributeFiles;
634 break;
635 default:
636 break;
637 }
638 if (buffer) {
639 int i;
640 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS; i += 8) {
641 if (UNLIKELY(offset + (i << 1) + 1 >= 0x1000)) {
642 break;
643 }
644 uint8_t hi = 0;
645 uint8_t lo = 0;
646 hi |= (softwareRenderer->row[i + 0] & 0x2) << 6;
647 lo |= (softwareRenderer->row[i + 0] & 0x1) << 7;
648 hi |= (softwareRenderer->row[i + 1] & 0x2) << 5;
649 lo |= (softwareRenderer->row[i + 1] & 0x1) << 6;
650 hi |= (softwareRenderer->row[i + 2] & 0x2) << 4;
651 lo |= (softwareRenderer->row[i + 2] & 0x1) << 5;
652 hi |= (softwareRenderer->row[i + 3] & 0x2) << 3;
653 lo |= (softwareRenderer->row[i + 3] & 0x1) << 4;
654 hi |= (softwareRenderer->row[i + 4] & 0x2) << 2;
655 lo |= (softwareRenderer->row[i + 4] & 0x1) << 3;
656 hi |= (softwareRenderer->row[i + 5] & 0x2) << 1;
657 lo |= (softwareRenderer->row[i + 5] & 0x1) << 2;
658 hi |= (softwareRenderer->row[i + 6] & 0x2) << 0;
659 lo |= (softwareRenderer->row[i + 6] & 0x1) << 1;
660 hi |= (softwareRenderer->row[i + 7] & 0x2) >> 1;
661 lo |= (softwareRenderer->row[i + 7] & 0x1) >> 0;
662 buffer[offset + (i << 1) + 0] = lo;
663 buffer[offset + (i << 1) + 1] = hi;
664 }
665 }
666 }
667}
668
669static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer) {
670 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
671
672 if (softwareRenderer->temporaryBuffer) {
673 mappedMemoryFree(softwareRenderer->temporaryBuffer, GB_VIDEO_HORIZONTAL_PIXELS * GB_VIDEO_VERTICAL_PIXELS * 4);
674 softwareRenderer->temporaryBuffer = 0;
675 }
676 if (!GBRegisterLCDCIsEnable(softwareRenderer->lcdc)) {
677 _clearScreen(softwareRenderer);
678 }
679 if (softwareRenderer->model == GB_MODEL_SGB) {
680 switch (softwareRenderer->sgbCommandHeader >> 3) {
681 case SGB_PAL_SET:
682 case SGB_ATTR_SET:
683 if (softwareRenderer->sgbPacket[1] & 0x40) {
684 renderer->sgbRenderMode = 0;
685 }
686 break;
687 case SGB_PAL_TRN:
688 case SGB_CHR_TRN:
689 case SGB_PCT_TRN:
690 if (softwareRenderer->sgbTransfer > 0 && softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
691 // Make sure every buffer sees this if we're multibuffering
692 _regenerateSGBBorder(softwareRenderer);
693 }
694 // Fall through
695 case SGB_ATTR_TRN:
696 ++softwareRenderer->sgbTransfer;
697 if (softwareRenderer->sgbTransfer == 5) {
698 softwareRenderer->sgbCommandHeader = 0;
699 }
700 break;
701 default:
702 break;
703 }
704 }
705 softwareRenderer->lastY = GB_VIDEO_VERTICAL_PIXELS;
706 softwareRenderer->currentWy = 0;
707 softwareRenderer->hasWindow = false;
708}
709
710static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy) {
711 uint8_t* data = renderer->d.vram;
712 uint8_t* attr = &maps[GB_SIZE_VRAM_BANK0];
713 if (!GBRegisterLCDCIsTileData(renderer->lcdc)) {
714 data += 0x1000;
715 }
716 int topY = ((sy >> 3) & 0x1F) * 0x20;
717 int bottomY = sy & 7;
718 if (startX < 0) {
719 startX = 0;
720 }
721 int x;
722 if ((startX + sx) & 7) {
723 int startX2 = startX + 8 - ((startX + sx) & 7);
724 for (x = startX; x < startX2; ++x) {
725 uint8_t* localData = data;
726 int localY = bottomY;
727 int topX = ((x + sx) >> 3) & 0x1F;
728 int bottomX = 7 - ((x + sx) & 7);
729 int bgTile;
730 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
731 bgTile = maps[topX + topY];
732 } else {
733 bgTile = ((int8_t*) maps)[topX + topY];
734 }
735 int p = 0;
736 if (renderer->model >= GB_MODEL_CGB) {
737 GBObjAttributes attrs = attr[topX + topY];
738 p = GBObjAttributesGetCGBPalette(attrs) * 4;
739 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
740 p |= 0x80;
741 }
742 if (GBObjAttributesIsBank(attrs)) {
743 localData += GB_SIZE_VRAM_BANK0;
744 }
745 if (GBObjAttributesIsYFlip(attrs)) {
746 localY = 7 - bottomY;
747 }
748 if (GBObjAttributesIsXFlip(attrs)) {
749 bottomX = 7 - bottomX;
750 }
751 }
752 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
753 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
754 tileDataUpper >>= bottomX;
755 tileDataLower >>= bottomX;
756 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
757 }
758 startX = startX2;
759 }
760 for (x = startX; x < endX; x += 8) {
761 uint8_t* localData = data;
762 int localY = bottomY;
763 int topX = ((x + sx) >> 3) & 0x1F;
764 int bgTile;
765 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
766 bgTile = maps[topX + topY];
767 } else {
768 bgTile = ((int8_t*) maps)[topX + topY];
769 }
770 int p = 0;
771 if (renderer->model >= GB_MODEL_CGB) {
772 GBObjAttributes attrs = attr[topX + topY];
773 p = GBObjAttributesGetCGBPalette(attrs) * 4;
774 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
775 p |= 0x80;
776 }
777 if (GBObjAttributesIsBank(attrs)) {
778 localData += GB_SIZE_VRAM_BANK0;
779 }
780 if (GBObjAttributesIsYFlip(attrs)) {
781 localY = 7 - bottomY;
782 }
783 if (GBObjAttributesIsXFlip(attrs)) {
784 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
785 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
786 renderer->row[x + 0] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
787 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
788 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
789 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
790 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
791 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
792 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
793 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
794 continue;
795 }
796 }
797 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
798 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
799 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
800 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
801 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
802 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
803 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
804 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
805 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
806 renderer->row[x + 0] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
807 }
808}
809
810static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y) {
811 int objX = obj->x + renderer->objOffsetX;
812 int ix = objX - 8;
813 if (endX < ix || startX >= ix + 8) {
814 return;
815 }
816 if (objX < endX) {
817 endX = objX;
818 }
819 if (objX - 8 > startX) {
820 startX = objX - 8;
821 }
822 if (startX < 0) {
823 startX = 0;
824 }
825 uint8_t* data = renderer->d.vram;
826 int tileOffset = 0;
827 int bottomY;
828 int objY = obj->y + renderer->objOffsetY;
829 if (GBObjAttributesIsYFlip(obj->attr)) {
830 bottomY = 7 - ((y - objY - 16) & 7);
831 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - objY < -8) {
832 ++tileOffset;
833 }
834 } else {
835 bottomY = (y - objY - 16) & 7;
836 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - objY >= -8) {
837 ++tileOffset;
838 }
839 }
840 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && obj->tile & 1) {
841 --tileOffset;
842 }
843 uint8_t mask = GBObjAttributesIsPriority(obj->attr) ? 0x63 : 0x60;
844 uint8_t mask2 = GBObjAttributesIsPriority(obj->attr) ? 0 : 0x83;
845 int p;
846 if (renderer->model >= GB_MODEL_CGB) {
847 p = (GBObjAttributesGetCGBPalette(obj->attr) + 8) * 4;
848 if (GBObjAttributesIsBank(obj->attr)) {
849 data += GB_SIZE_VRAM_BANK0;
850 }
851 if (!GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
852 mask = 0x60;
853 mask2 = 0x83;
854 }
855 } else {
856 p = (GBObjAttributesGetPalette(obj->attr) + 8) * 4;
857 }
858 int bottomX;
859 int x = startX;
860 if ((x - objX) & 7) {
861 for (; x < endX; ++x) {
862 if (GBObjAttributesIsXFlip(obj->attr)) {
863 bottomX = (x - objX) & 7;
864 } else {
865 bottomX = 7 - ((x - objX) & 7);
866 }
867 int objTile = obj->tile + tileOffset;
868 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
869 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
870 tileDataUpper >>= bottomX;
871 tileDataLower >>= bottomX;
872 color_t current = renderer->row[x];
873 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
874 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
875 }
876 }
877 } else if (GBObjAttributesIsXFlip(obj->attr)) {
878 int objTile = obj->tile + tileOffset;
879 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
880 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
881 color_t current;
882 current = renderer->row[x];
883 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
884 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
885 }
886 current = renderer->row[x + 1];
887 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
888 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
889 }
890 current = renderer->row[x + 2];
891 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
892 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
893 }
894 current = renderer->row[x + 3];
895 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
896 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
897 }
898 current = renderer->row[x + 4];
899 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
900 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
901 }
902 current = renderer->row[x + 5];
903 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
904 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
905 }
906 current = renderer->row[x + 6];
907 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
908 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
909 }
910 current = renderer->row[x + 7];
911 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
912 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
913 }
914 } else {
915 int objTile = obj->tile + tileOffset;
916 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
917 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
918 color_t current;
919 current = renderer->row[x + 7];
920 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
921 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
922 }
923 current = renderer->row[x + 6];
924 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
925 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
926 }
927 current = renderer->row[x + 5];
928 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
929 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
930 }
931 current = renderer->row[x + 4];
932 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
933 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
934 }
935 current = renderer->row[x + 3];
936 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
937 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
938 }
939 current = renderer->row[x + 2];
940 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
941 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
942 }
943 current = renderer->row[x + 1];
944 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
945 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
946 }
947 current = renderer->row[x];
948 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
949 renderer->row[x] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
950 }
951 }
952}
953
954static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels) {
955 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
956 *stride = softwareRenderer->outputBufferStride;
957 *pixels = softwareRenderer->outputBuffer;
958}
959
960static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels) {
961 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
962 // TODO: Share with GBAVideoSoftwareRendererGetPixels
963
964 const color_t* colorPixels = pixels;
965 unsigned i;
966 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS; ++i) {
967 memmove(&softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * i], &colorPixels[stride * i], GB_VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL);
968 }
969}