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 GBVideoSoftwareRendererEnableSGBBorder(struct GBVideoRenderer* renderer, bool enable);
25static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels);
26static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels);
27
28static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy);
29static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y);
30
31static void _clearScreen(struct GBVideoSoftwareRenderer* renderer) {
32 size_t sgbOffset = 0;
33 if (renderer->model & GB_MODEL_SGB) {
34 return;
35 }
36 int y;
37 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS; ++y) {
38 color_t* row = &renderer->outputBuffer[renderer->outputBufferStride * y + sgbOffset];
39 int x;
40 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS; x += 4) {
41 row[x + 0] = renderer->palette[0];
42 row[x + 1] = renderer->palette[0];
43 row[x + 2] = renderer->palette[0];
44 row[x + 3] = renderer->palette[0];
45 }
46 }
47}
48
49static void _regenerateSGBBorder(struct GBVideoSoftwareRenderer* renderer) {
50 int i;
51 for (i = 0; i < 0x40; ++i) {
52 uint16_t color;
53 LOAD_16LE(color, 0x800 + i * 2, renderer->d.sgbMapRam);
54 renderer->d.writePalette(&renderer->d, i + 0x40, color);
55 }
56 int x, y;
57 for (y = 0; y < 224; ++y) {
58 for (x = 0; x < 256; x += 8) {
59 if (x >= 48 && x < 208 && y >= 40 && y < 184) {
60 continue;
61 }
62 uint16_t mapData;
63 LOAD_16LE(mapData, (x >> 2) + (y & ~7) * 8, renderer->d.sgbMapRam);
64 if (UNLIKELY(SGBBgAttributesGetTile(mapData) >= 0x100)) {
65 continue;
66 }
67
68 int localY = y & 0x7;
69 if (SGBBgAttributesIsYFlip(mapData)) {
70 localY = 7 - localY;
71 }
72 uint8_t tileData[4];
73 tileData[0] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x00];
74 tileData[1] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x01];
75 tileData[2] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x10];
76 tileData[3] = renderer->d.sgbCharRam[(SGBBgAttributesGetTile(mapData) * 16 + localY) * 2 + 0x11];
77
78 size_t base = y * renderer->outputBufferStride + x;
79 int paletteBase = SGBBgAttributesGetPalette(mapData) * 0x10;
80 int colorSelector;
81
82 int flip = 0;
83 if (SGBBgAttributesIsXFlip(mapData)) {
84 flip = 7;
85 }
86 for (i = 7; i >= 0; --i) {
87 colorSelector = (tileData[0] >> i & 0x1) << 0 | (tileData[1] >> i & 0x1) << 1 | (tileData[2] >> i & 0x1) << 2 | (tileData[3] >> i & 0x1) << 3;
88 renderer->outputBuffer[(base + 7 - i) ^ flip] = renderer->palette[paletteBase | colorSelector];
89 }
90 }
91 }
92}
93
94static inline void _setAttribute(uint8_t* sgbAttributes, unsigned x, unsigned y, int palette) {
95 int p = sgbAttributes[(x >> 2) + 5 * y];
96 p &= ~(3 << (2 * (3 - (x & 3))));
97 p |= palette << (2 * (3 - (x & 3)));
98 sgbAttributes[(x >> 2) + 5 * y] = p;
99}
100
101static void _parseAttrBlock(struct GBVideoSoftwareRenderer* renderer, int start) {
102 uint8_t block[6];
103 memcpy(block, &renderer->sgbPacket[start], 6);
104 unsigned x0 = block[2];
105 unsigned x1 = block[4];
106 unsigned y0 = block[3];
107 unsigned y1 = block[5];
108 unsigned x, y;
109 int pIn = block[1] & 3;
110 int pPerim = (block[1] >> 2) & 3;
111 int pOut = (block[1] >> 4) & 3;
112
113 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS / 8; ++y) {
114 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++x) {
115 if (y > y0 && y < y1 && x > x0 && x < x1) {
116 if (block[0] & 1) {
117 _setAttribute(renderer->d.sgbAttributes, x, y, pIn);
118 }
119 } else if (y < y0 || y > y1 || x < x0 || x > x1) {
120 if (block[0] & 4) {
121 _setAttribute(renderer->d.sgbAttributes, x, y, pOut);
122 }
123 } else {
124 if (block[0] & 2) {
125 _setAttribute(renderer->d.sgbAttributes, x, y, pPerim);
126 } else if (block[0] & 1) {
127 _setAttribute(renderer->d.sgbAttributes, x, y, pIn);
128 } else if (block[0] & 4) {
129 _setAttribute(renderer->d.sgbAttributes, x, y, pOut);
130 }
131 }
132 }
133 }
134}
135
136static void _parseAttrLine(struct GBVideoSoftwareRenderer* renderer, int start) {
137 uint8_t byte = renderer->sgbPacket[start];
138 unsigned line = byte & 0x1F;
139 int pal = (byte >> 5) & 3;
140
141 if (byte & 0x80) {
142 if (line > GB_VIDEO_VERTICAL_PIXELS / 8) {
143 return;
144 }
145 int x;
146 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++x) {
147 _setAttribute(renderer->d.sgbAttributes, x, line, pal);
148 }
149 } else {
150 if (line > GB_VIDEO_HORIZONTAL_PIXELS / 8) {
151 return;
152 }
153 int y;
154 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS / 8; ++y) {
155 _setAttribute(renderer->d.sgbAttributes, line, y, pal);
156 }
157 }
158}
159
160static bool _inWindow(struct GBVideoSoftwareRenderer* renderer) {
161 return GBRegisterLCDCIsWindow(renderer->lcdc) && GB_VIDEO_HORIZONTAL_PIXELS + 7 > renderer->wx;
162}
163
164void GBVideoSoftwareRendererCreate(struct GBVideoSoftwareRenderer* renderer) {
165 renderer->d.init = GBVideoSoftwareRendererInit;
166 renderer->d.deinit = GBVideoSoftwareRendererDeinit;
167 renderer->d.writeVideoRegister = GBVideoSoftwareRendererWriteVideoRegister;
168 renderer->d.writeSGBPacket = GBVideoSoftwareRendererWriteSGBPacket;
169 renderer->d.writePalette = GBVideoSoftwareRendererWritePalette;
170 renderer->d.writeVRAM = GBVideoSoftwareRendererWriteVRAM;
171 renderer->d.writeOAM = GBVideoSoftwareRendererWriteOAM;
172 renderer->d.drawRange = GBVideoSoftwareRendererDrawRange;
173 renderer->d.finishScanline = GBVideoSoftwareRendererFinishScanline;
174 renderer->d.finishFrame = GBVideoSoftwareRendererFinishFrame;
175 renderer->d.enableSGBBorder = GBVideoSoftwareRendererEnableSGBBorder;
176 renderer->d.getPixels = GBVideoSoftwareRendererGetPixels;
177 renderer->d.putPixels = GBVideoSoftwareRendererPutPixels;
178
179 renderer->d.disableBG = false;
180 renderer->d.disableOBJ = false;
181 renderer->d.disableWIN = false;
182
183 renderer->temporaryBuffer = 0;
184}
185
186static void GBVideoSoftwareRendererInit(struct GBVideoRenderer* renderer, enum GBModel model, bool sgbBorders) {
187 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
188 softwareRenderer->lcdc = 0;
189 softwareRenderer->scy = 0;
190 softwareRenderer->scx = 0;
191 softwareRenderer->wy = 0;
192 softwareRenderer->currentWy = 0;
193 softwareRenderer->lastY = GB_VIDEO_VERTICAL_PIXELS;
194 softwareRenderer->hasWindow = false;
195 softwareRenderer->wx = 0;
196 softwareRenderer->model = model;
197 softwareRenderer->sgbTransfer = 0;
198 softwareRenderer->sgbCommandHeader = 0;
199 softwareRenderer->sgbBorders = sgbBorders;
200 softwareRenderer->objOffsetX = 0;
201 softwareRenderer->objOffsetY = 0;
202 softwareRenderer->offsetScx = 0;
203 softwareRenderer->offsetScy = 0;
204 softwareRenderer->offsetWx = 0;
205 softwareRenderer->offsetWy = 0;
206
207 int i;
208 for (i = 0; i < 64; ++i) {
209 softwareRenderer->lookup[i] = i;
210 softwareRenderer->lookup[i] = i;
211 softwareRenderer->lookup[i] = i;
212 softwareRenderer->lookup[i] = i;
213 }
214}
215
216static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer) {
217 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
218 UNUSED(softwareRenderer);
219}
220
221static void GBVideoSoftwareRendererUpdateWindow(struct GBVideoSoftwareRenderer* renderer, bool before, bool after) {
222 if (renderer->lastY >= GB_VIDEO_VERTICAL_PIXELS || after == before) {
223 return;
224 }
225 if (renderer->lastY >= renderer->wy) {
226 if (!after) {
227 renderer->currentWy -= renderer->lastY;
228 renderer->hasWindow = true;
229 } else {
230 if (!renderer->hasWindow) {
231 if (renderer->lastY > renderer->wy) {
232 renderer->currentWy = GB_VIDEO_VERTICAL_PIXELS;
233 } else {
234 renderer->currentWy = renderer->lastY - renderer->wy;
235 }
236 } else {
237 renderer->currentWy += renderer->lastY;
238 }
239 }
240 }
241}
242
243static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value) {
244 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
245 if (renderer->cache) {
246 GBVideoCacheWriteVideoRegister(renderer->cache, address, value);
247 }
248 bool wasWindow = _inWindow(softwareRenderer);
249 switch (address) {
250 case REG_LCDC:
251 softwareRenderer->lcdc = value;
252 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
253 break;
254 case REG_SCY:
255 softwareRenderer->scy = value;
256 break;
257 case REG_SCX:
258 softwareRenderer->scx = value;
259 break;
260 case REG_WY:
261 softwareRenderer->wy = value;
262 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
263 break;
264 case REG_WX:
265 softwareRenderer->wx = value;
266 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
267 break;
268 case REG_BGP:
269 softwareRenderer->lookup[0] = value & 3;
270 softwareRenderer->lookup[1] = (value >> 2) & 3;
271 softwareRenderer->lookup[2] = (value >> 4) & 3;
272 softwareRenderer->lookup[3] = (value >> 6) & 3;
273 break;
274 case REG_OBP0:
275 softwareRenderer->lookup[0x20 + 0] = value & 3;
276 softwareRenderer->lookup[0x20 + 1] = (value >> 2) & 3;
277 softwareRenderer->lookup[0x20 + 2] = (value >> 4) & 3;
278 softwareRenderer->lookup[0x20 + 3] = (value >> 6) & 3;
279 break;
280 case REG_OBP1:
281 softwareRenderer->lookup[0x24 + 0] = value & 3;
282 softwareRenderer->lookup[0x24 + 1] = (value >> 2) & 3;
283 softwareRenderer->lookup[0x24 + 2] = (value >> 4) & 3;
284 softwareRenderer->lookup[0x24 + 3] = (value >> 6) & 3;
285 break;
286 }
287 return value;
288}
289
290static void GBVideoSoftwareRendererWriteSGBPacket(struct GBVideoRenderer* renderer, uint8_t* data) {
291 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
292 memcpy(softwareRenderer->sgbPacket, data, sizeof(softwareRenderer->sgbPacket));
293 int i;
294 softwareRenderer->sgbCommandHeader = data[0];
295 softwareRenderer->sgbTransfer = 0;
296 int set;
297 int sets;
298 int attrX;
299 int attrY;
300 int attrDirection;
301 int pBefore;
302 int pAfter;
303 int pDiv;
304 switch (softwareRenderer->sgbCommandHeader >> 3) {
305 case SGB_PAL_SET:
306 softwareRenderer->sgbPacket[1] = data[9];
307 if (!(data[9] & 0x80)) {
308 break;
309 }
310 // Fall through
311 case SGB_ATTR_SET:
312 set = softwareRenderer->sgbPacket[1] & 0x3F;
313 if (set <= 0x2C) {
314 memcpy(renderer->sgbAttributes, &renderer->sgbAttributeFiles[set * 90], 90);
315 }
316 break;
317 case SGB_ATTR_BLK:
318 sets = softwareRenderer->sgbPacket[1];
319 i = 2;
320 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; i += 6, --sets) {
321 _parseAttrBlock(softwareRenderer, i);
322 }
323 break;
324 case SGB_ATTR_LIN:
325 sets = softwareRenderer->sgbPacket[1];
326 i = 2;
327 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; ++i, --sets) {
328 _parseAttrLine(softwareRenderer, i);
329 }
330 break;
331 case SGB_ATTR_DIV:
332 pAfter = softwareRenderer->sgbPacket[1] & 3;
333 pBefore = (softwareRenderer->sgbPacket[1] >> 2) & 3;
334 pDiv = (softwareRenderer->sgbPacket[1] >> 4) & 3;
335 attrX = softwareRenderer->sgbPacket[2];
336 if (softwareRenderer->sgbPacket[1] & 0x40) {
337 if (attrX > GB_VIDEO_VERTICAL_PIXELS / 8) {
338 attrX = GB_VIDEO_VERTICAL_PIXELS / 8;
339 }
340 int j;
341 for (j = 0; j < attrX; ++j) {
342 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
343 _setAttribute(renderer->sgbAttributes, i, j, pBefore);
344 }
345 }
346 if (attrX < GB_VIDEO_VERTICAL_PIXELS / 8) {
347 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
348 _setAttribute(renderer->sgbAttributes, i, attrX, pDiv);
349 }
350
351 }
352 for (; j < GB_VIDEO_VERTICAL_PIXELS / 8; ++j) {
353 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
354 _setAttribute(renderer->sgbAttributes, i, j, pAfter);
355 }
356 }
357 } else {
358 if (attrX > GB_VIDEO_HORIZONTAL_PIXELS / 8) {
359 attrX = GB_VIDEO_HORIZONTAL_PIXELS / 8;
360 }
361 int j;
362 for (j = 0; j < attrX; ++j) {
363 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
364 _setAttribute(renderer->sgbAttributes, j, i, pBefore);
365 }
366 }
367 if (attrX < GB_VIDEO_HORIZONTAL_PIXELS / 8) {
368 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS / 8; ++i) {
369 _setAttribute(renderer->sgbAttributes, attrX, i, pDiv);
370 }
371
372 }
373 for (; j < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++j) {
374 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS / 8; ++i) {
375 _setAttribute(renderer->sgbAttributes, j, i, pAfter);
376 }
377 }
378 }
379 break;
380 case SGB_ATTR_CHR:
381 attrX = softwareRenderer->sgbPacket[1];
382 attrY = softwareRenderer->sgbPacket[2];
383 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
384 attrX = 0;
385 }
386 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
387 attrY = 0;
388 }
389 sets = softwareRenderer->sgbPacket[3];
390 sets |= softwareRenderer->sgbPacket[4] << 8;
391 attrDirection = softwareRenderer->sgbPacket[5];
392 i = 6;
393 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; ++i) {
394 int j;
395 for (j = 0; j < 4 && sets; ++j, --sets) {
396 uint8_t p = softwareRenderer->sgbPacket[i] >> (6 - j * 2);
397 _setAttribute(renderer->sgbAttributes, attrX, attrY, p & 3);
398 if (attrDirection) {
399 ++attrY;
400 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
401 attrY = 0;
402 ++attrX;
403 }
404 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
405 attrX = 0;
406 }
407 } else {
408 ++attrX;
409 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
410 attrX = 0;
411 ++attrY;
412 }
413 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
414 attrY = 0;
415 }
416 }
417 }
418 }
419
420 break;
421 case SGB_ATRC_EN:
422 case SGB_MASK_EN:
423 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
424 _regenerateSGBBorder(softwareRenderer);
425 }
426 }
427}
428
429static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value) {
430 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
431 color_t color = mColorFrom555(value);
432 if (softwareRenderer->model & GB_MODEL_SGB) {
433 if (index < 0x10 && index && !(index & 3)) {
434 color = softwareRenderer->palette[0];
435 } else if (index >= 0x40 && !(index & 0xF)) {
436 color = softwareRenderer->palette[0];
437 }
438 }
439 if (renderer->cache) {
440 mCacheSetWritePalette(renderer->cache, index, color);
441 }
442 if (softwareRenderer->model == GB_MODEL_AGB) {
443 unsigned r = M_R5(value);
444 unsigned g = M_G5(value);
445 unsigned b = M_B5(value);
446 r = r * r;
447 g = g * g;
448 b = b * b;
449#ifdef COLOR_16_BIT
450 r /= 31;
451 g /= 31;
452 b /= 31;
453 color = mColorFrom555(r | (g << 5) | (b << 10));
454#else
455 r >>= 2;
456 g >>= 2;
457 b >>= 2;
458 color = r | (g << 8) | (b << 16);
459#endif
460 }
461 softwareRenderer->palette[index] = color;
462
463 if (softwareRenderer->model & GB_MODEL_SGB && !index && GBRegisterLCDCIsEnable(softwareRenderer->lcdc)) {
464 renderer->writePalette(renderer, 0x04, value);
465 renderer->writePalette(renderer, 0x08, value);
466 renderer->writePalette(renderer, 0x0C, value);
467 renderer->writePalette(renderer, 0x40, value);
468 renderer->writePalette(renderer, 0x50, value);
469 renderer->writePalette(renderer, 0x60, value);
470 renderer->writePalette(renderer, 0x70, value);
471 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
472 _regenerateSGBBorder(softwareRenderer);
473 }
474 }
475}
476
477static void GBVideoSoftwareRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address) {
478 if (renderer->cache) {
479 mCacheSetWriteVRAM(renderer->cache, address);
480 }
481}
482
483static void GBVideoSoftwareRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam) {
484 UNUSED(renderer);
485 UNUSED(oam);
486 // Nothing to do
487}
488
489static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax) {
490 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
491 softwareRenderer->lastY = y;
492 uint8_t* maps = &softwareRenderer->d.vram[GB_BASE_MAP];
493 if (GBRegisterLCDCIsTileMap(softwareRenderer->lcdc)) {
494 maps += GB_SIZE_MAP;
495 }
496 if (softwareRenderer->d.disableBG) {
497 memset(&softwareRenderer->row[startX], 0, endX - startX);
498 }
499 if (GBRegisterLCDCIsBgEnable(softwareRenderer->lcdc) || softwareRenderer->model >= GB_MODEL_CGB) {
500 int wy = softwareRenderer->wy + softwareRenderer->currentWy;
501 if (GBRegisterLCDCIsWindow(softwareRenderer->lcdc) && wy <= y && endX >= softwareRenderer->wx - 7) {
502 if (softwareRenderer->wx - 7 > 0 && !softwareRenderer->d.disableBG) {
503 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, softwareRenderer->wx - 7, softwareRenderer->scx - softwareRenderer->offsetScx, softwareRenderer->scy + y - softwareRenderer->offsetScy);
504 }
505
506 maps = &softwareRenderer->d.vram[GB_BASE_MAP];
507 if (GBRegisterLCDCIsWindowTileMap(softwareRenderer->lcdc)) {
508 maps += GB_SIZE_MAP;
509 }
510 if (!softwareRenderer->d.disableWIN) {
511 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, softwareRenderer->wx - 7, endX, 7 - softwareRenderer->wx - softwareRenderer->offsetWx, y - wy - softwareRenderer->offsetWy);
512 }
513 } else if (!softwareRenderer->d.disableBG) {
514 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, endX, softwareRenderer->scx - softwareRenderer->offsetScx, softwareRenderer->scy + y - softwareRenderer->offsetScy);
515 }
516 } else if (!softwareRenderer->d.disableBG) {
517 memset(&softwareRenderer->row[startX], 0, endX - startX);
518 }
519
520 if (GBRegisterLCDCIsObjEnable(softwareRenderer->lcdc) && !softwareRenderer->d.disableOBJ) {
521 size_t i;
522 for (i = 0; i < oamMax; ++i) {
523 GBVideoSoftwareRendererDrawObj(softwareRenderer, &obj[i], startX, endX, y);
524 }
525 }
526
527 size_t sgbOffset = 0;
528 if (softwareRenderer->model & GB_MODEL_SGB && softwareRenderer->sgbBorders) {
529 sgbOffset = softwareRenderer->outputBufferStride * 40 + 48;
530 }
531 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y + sgbOffset];
532 int x = startX;
533 int p = 0;
534 switch (softwareRenderer->d.sgbRenderMode) {
535 case 0:
536 if (softwareRenderer->model & GB_MODEL_SGB) {
537 p = softwareRenderer->d.sgbAttributes[(startX >> 5) + 5 * (y >> 3)];
538 p >>= 6 - ((x / 4) & 0x6);
539 p &= 3;
540 p <<= 2;
541 }
542 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
543 row[x] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
544 }
545 for (; x + 7 < (endX & ~7); x += 8) {
546 if (softwareRenderer->model & GB_MODEL_SGB) {
547 p = softwareRenderer->d.sgbAttributes[(x >> 5) + 5 * (y >> 3)];
548 p >>= 6 - ((x / 4) & 0x6);
549 p &= 3;
550 p <<= 2;
551 }
552 row[x + 0] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
553 row[x + 1] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 1] & 0x7F]];
554 row[x + 2] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 2] & 0x7F]];
555 row[x + 3] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 3] & 0x7F]];
556 row[x + 4] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 4] & 0x7F]];
557 row[x + 5] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 5] & 0x7F]];
558 row[x + 6] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 6] & 0x7F]];
559 row[x + 7] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 7] & 0x7F]];
560 }
561 if (softwareRenderer->model & GB_MODEL_SGB) {
562 p = softwareRenderer->d.sgbAttributes[(x >> 5) + 5 * (y >> 3)];
563 p >>= 6 - ((x / 4) & 0x6);
564 p &= 3;
565 p <<= 2;
566 }
567 for (; x < endX; ++x) {
568 row[x] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
569 }
570 break;
571 case 1:
572 break;
573 case 2:
574 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
575 row[x] = 0;
576 }
577 for (; x + 7 < (endX & ~7); x += 8) {
578 row[x] = 0;
579 row[x + 1] = 0;
580 row[x + 2] = 0;
581 row[x + 3] = 0;
582 row[x + 4] = 0;
583 row[x + 5] = 0;
584 row[x + 6] = 0;
585 row[x + 7] = 0;
586 }
587 for (; x < endX; ++x) {
588 row[x] = 0;
589 }
590 break;
591 case 3:
592 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
593 row[x] = softwareRenderer->palette[0];
594 }
595 for (; x + 7 < (endX & ~7); x += 8) {
596 row[x] = softwareRenderer->palette[0];
597 row[x + 1] = softwareRenderer->palette[0];
598 row[x + 2] = softwareRenderer->palette[0];
599 row[x + 3] = softwareRenderer->palette[0];
600 row[x + 4] = softwareRenderer->palette[0];
601 row[x + 5] = softwareRenderer->palette[0];
602 row[x + 6] = softwareRenderer->palette[0];
603 row[x + 7] = softwareRenderer->palette[0];
604 }
605 for (; x < endX; ++x) {
606 row[x] = softwareRenderer->palette[0];
607 }
608 break;
609 }
610}
611
612static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y) {
613 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
614
615 if (softwareRenderer->sgbTransfer == 1) {
616 size_t offset = 2 * ((y & 7) + (y >> 3) * GB_VIDEO_HORIZONTAL_PIXELS);
617 if (offset >= 0x1000) {
618 return;
619 }
620 uint8_t* buffer = NULL;
621 switch (softwareRenderer->sgbCommandHeader >> 3) {
622 case SGB_PAL_TRN:
623 buffer = renderer->sgbPalRam;
624 break;
625 case SGB_CHR_TRN:
626 buffer = &renderer->sgbCharRam[SGB_SIZE_CHAR_RAM / 2 * (softwareRenderer->sgbPacket[1] & 1)];
627 break;
628 case SGB_PCT_TRN:
629 buffer = renderer->sgbMapRam;
630 break;
631 case SGB_ATTR_TRN:
632 buffer = renderer->sgbAttributeFiles;
633 break;
634 default:
635 break;
636 }
637 if (buffer) {
638 int i;
639 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS; i += 8) {
640 if (UNLIKELY(offset + (i << 1) + 1 >= 0x1000)) {
641 break;
642 }
643 uint8_t hi = 0;
644 uint8_t lo = 0;
645 hi |= (softwareRenderer->row[i + 0] & 0x2) << 6;
646 lo |= (softwareRenderer->row[i + 0] & 0x1) << 7;
647 hi |= (softwareRenderer->row[i + 1] & 0x2) << 5;
648 lo |= (softwareRenderer->row[i + 1] & 0x1) << 6;
649 hi |= (softwareRenderer->row[i + 2] & 0x2) << 4;
650 lo |= (softwareRenderer->row[i + 2] & 0x1) << 5;
651 hi |= (softwareRenderer->row[i + 3] & 0x2) << 3;
652 lo |= (softwareRenderer->row[i + 3] & 0x1) << 4;
653 hi |= (softwareRenderer->row[i + 4] & 0x2) << 2;
654 lo |= (softwareRenderer->row[i + 4] & 0x1) << 3;
655 hi |= (softwareRenderer->row[i + 5] & 0x2) << 1;
656 lo |= (softwareRenderer->row[i + 5] & 0x1) << 2;
657 hi |= (softwareRenderer->row[i + 6] & 0x2) << 0;
658 lo |= (softwareRenderer->row[i + 6] & 0x1) << 1;
659 hi |= (softwareRenderer->row[i + 7] & 0x2) >> 1;
660 lo |= (softwareRenderer->row[i + 7] & 0x1) >> 0;
661 buffer[offset + (i << 1) + 0] = lo;
662 buffer[offset + (i << 1) + 1] = hi;
663 }
664 }
665 }
666}
667
668static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer) {
669 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
670
671 if (softwareRenderer->temporaryBuffer) {
672 mappedMemoryFree(softwareRenderer->temporaryBuffer, GB_VIDEO_HORIZONTAL_PIXELS * GB_VIDEO_VERTICAL_PIXELS * 4);
673 softwareRenderer->temporaryBuffer = 0;
674 }
675 if (!GBRegisterLCDCIsEnable(softwareRenderer->lcdc)) {
676 _clearScreen(softwareRenderer);
677 }
678 if (softwareRenderer->model & GB_MODEL_SGB) {
679 switch (softwareRenderer->sgbCommandHeader >> 3) {
680 case SGB_PAL_SET:
681 case SGB_ATTR_SET:
682 if (softwareRenderer->sgbPacket[1] & 0x40) {
683 renderer->sgbRenderMode = 0;
684 }
685 break;
686 case SGB_PAL_TRN:
687 case SGB_CHR_TRN:
688 case SGB_PCT_TRN:
689 if (softwareRenderer->sgbTransfer > 0 && softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
690 // Make sure every buffer sees this if we're multibuffering
691 _regenerateSGBBorder(softwareRenderer);
692 }
693 // Fall through
694 case SGB_ATTR_TRN:
695 ++softwareRenderer->sgbTransfer;
696 if (softwareRenderer->sgbTransfer == 5) {
697 softwareRenderer->sgbCommandHeader = 0;
698 }
699 break;
700 default:
701 break;
702 }
703 }
704 softwareRenderer->lastY = GB_VIDEO_VERTICAL_PIXELS;
705 softwareRenderer->currentWy = 0;
706 softwareRenderer->hasWindow = false;
707}
708
709static void GBVideoSoftwareRendererEnableSGBBorder(struct GBVideoRenderer* renderer, bool enable) {
710 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
711 if (softwareRenderer->model & GB_MODEL_SGB) {
712 if (enable == softwareRenderer->sgbBorders) {
713 return;
714 }
715 softwareRenderer->sgbBorders = enable;
716 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
717 _regenerateSGBBorder(softwareRenderer);
718 }
719 }
720}
721
722static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy) {
723 uint8_t* data = renderer->d.vram;
724 uint8_t* attr = &maps[GB_SIZE_VRAM_BANK0];
725 if (!GBRegisterLCDCIsTileData(renderer->lcdc)) {
726 data += 0x1000;
727 }
728 int topY = ((sy >> 3) & 0x1F) * 0x20;
729 int bottomY = sy & 7;
730 if (startX < 0) {
731 startX = 0;
732 }
733 int x;
734 if ((startX + sx) & 7) {
735 int startX2 = startX + 8 - ((startX + sx) & 7);
736 for (x = startX; x < startX2; ++x) {
737 uint8_t* localData = data;
738 int localY = bottomY;
739 int topX = ((x + sx) >> 3) & 0x1F;
740 int bottomX = 7 - ((x + sx) & 7);
741 int bgTile;
742 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
743 bgTile = maps[topX + topY];
744 } else {
745 bgTile = ((int8_t*) maps)[topX + topY];
746 }
747 int p = 0;
748 if (renderer->model >= GB_MODEL_CGB) {
749 GBObjAttributes attrs = attr[topX + topY];
750 p = GBObjAttributesGetCGBPalette(attrs) * 4;
751 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
752 p |= 0x80;
753 }
754 if (GBObjAttributesIsBank(attrs)) {
755 localData += GB_SIZE_VRAM_BANK0;
756 }
757 if (GBObjAttributesIsYFlip(attrs)) {
758 localY = 7 - bottomY;
759 }
760 if (GBObjAttributesIsXFlip(attrs)) {
761 bottomX = 7 - bottomX;
762 }
763 }
764 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
765 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
766 tileDataUpper >>= bottomX;
767 tileDataLower >>= bottomX;
768 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
769 }
770 startX = startX2;
771 }
772 for (x = startX; x < endX; x += 8) {
773 uint8_t* localData = data;
774 int localY = bottomY;
775 int topX = ((x + sx) >> 3) & 0x1F;
776 int bgTile;
777 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
778 bgTile = maps[topX + topY];
779 } else {
780 bgTile = ((int8_t*) maps)[topX + topY];
781 }
782 int p = 0;
783 if (renderer->model >= GB_MODEL_CGB) {
784 GBObjAttributes attrs = attr[topX + topY];
785 p = GBObjAttributesGetCGBPalette(attrs) * 4;
786 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
787 p |= 0x80;
788 }
789 if (GBObjAttributesIsBank(attrs)) {
790 localData += GB_SIZE_VRAM_BANK0;
791 }
792 if (GBObjAttributesIsYFlip(attrs)) {
793 localY = 7 - bottomY;
794 }
795 if (GBObjAttributesIsXFlip(attrs)) {
796 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
797 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
798 renderer->row[x + 0] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
799 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
800 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
801 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
802 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
803 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
804 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
805 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
806 continue;
807 }
808 }
809 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
810 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
811 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
812 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
813 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
814 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
815 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
816 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
817 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
818 renderer->row[x + 0] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
819 }
820}
821
822static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y) {
823 int objX = obj->x + renderer->objOffsetX;
824 int ix = objX - 8;
825 if (endX < ix || startX >= ix + 8) {
826 return;
827 }
828 if (objX < endX) {
829 endX = objX;
830 }
831 if (objX - 8 > startX) {
832 startX = objX - 8;
833 }
834 if (startX < 0) {
835 startX = 0;
836 }
837 uint8_t* data = renderer->d.vram;
838 int tileOffset = 0;
839 int bottomY;
840 int objY = obj->y + renderer->objOffsetY;
841 if (GBObjAttributesIsYFlip(obj->attr)) {
842 bottomY = 7 - ((y - objY - 16) & 7);
843 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - objY < -8) {
844 ++tileOffset;
845 }
846 } else {
847 bottomY = (y - objY - 16) & 7;
848 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - objY >= -8) {
849 ++tileOffset;
850 }
851 }
852 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && obj->tile & 1) {
853 --tileOffset;
854 }
855 uint8_t mask = GBObjAttributesIsPriority(obj->attr) ? 0x63 : 0x60;
856 uint8_t mask2 = GBObjAttributesIsPriority(obj->attr) ? 0 : 0x83;
857 int p;
858 if (renderer->model >= GB_MODEL_CGB) {
859 p = (GBObjAttributesGetCGBPalette(obj->attr) + 8) * 4;
860 if (GBObjAttributesIsBank(obj->attr)) {
861 data += GB_SIZE_VRAM_BANK0;
862 }
863 if (!GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
864 mask = 0x60;
865 mask2 = 0x83;
866 }
867 } else {
868 p = (GBObjAttributesGetPalette(obj->attr) + 8) * 4;
869 }
870 int bottomX;
871 int x = startX;
872 if ((x - objX) & 7) {
873 for (; x < endX; ++x) {
874 if (GBObjAttributesIsXFlip(obj->attr)) {
875 bottomX = (x - objX) & 7;
876 } else {
877 bottomX = 7 - ((x - objX) & 7);
878 }
879 int objTile = obj->tile + tileOffset;
880 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
881 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
882 tileDataUpper >>= bottomX;
883 tileDataLower >>= bottomX;
884 color_t current = renderer->row[x];
885 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
886 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
887 }
888 }
889 } else if (GBObjAttributesIsXFlip(obj->attr)) {
890 int objTile = obj->tile + tileOffset;
891 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
892 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
893 color_t current;
894 current = renderer->row[x];
895 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
896 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
897 }
898 current = renderer->row[x + 1];
899 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
900 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
901 }
902 current = renderer->row[x + 2];
903 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
904 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
905 }
906 current = renderer->row[x + 3];
907 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
908 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
909 }
910 current = renderer->row[x + 4];
911 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
912 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
913 }
914 current = renderer->row[x + 5];
915 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
916 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
917 }
918 current = renderer->row[x + 6];
919 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
920 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
921 }
922 current = renderer->row[x + 7];
923 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
924 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
925 }
926 } else {
927 int objTile = obj->tile + tileOffset;
928 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
929 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
930 color_t current;
931 current = renderer->row[x + 7];
932 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
933 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
934 }
935 current = renderer->row[x + 6];
936 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
937 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
938 }
939 current = renderer->row[x + 5];
940 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
941 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
942 }
943 current = renderer->row[x + 4];
944 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
945 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
946 }
947 current = renderer->row[x + 3];
948 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
949 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
950 }
951 current = renderer->row[x + 2];
952 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
953 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
954 }
955 current = renderer->row[x + 1];
956 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
957 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
958 }
959 current = renderer->row[x];
960 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
961 renderer->row[x] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
962 }
963 }
964}
965
966static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels) {
967 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
968 *stride = softwareRenderer->outputBufferStride;
969 *pixels = softwareRenderer->outputBuffer;
970}
971
972static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels) {
973 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
974 // TODO: Share with GBAVideoSoftwareRendererGetPixels
975
976 const color_t* colorPixels = pixels;
977 unsigned i;
978 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS; ++i) {
979 memmove(&softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * i], &colorPixels[stride * i], GB_VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL);
980 }
981}