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->currentWx = 0;
194 softwareRenderer->lastY = GB_VIDEO_VERTICAL_PIXELS;
195 softwareRenderer->lastX = 0;
196 softwareRenderer->hasWindow = false;
197 softwareRenderer->wx = 0;
198 softwareRenderer->model = model;
199 softwareRenderer->sgbTransfer = 0;
200 softwareRenderer->sgbCommandHeader = 0;
201 softwareRenderer->sgbBorders = sgbBorders;
202 softwareRenderer->objOffsetX = 0;
203 softwareRenderer->objOffsetY = 0;
204 softwareRenderer->offsetScx = 0;
205 softwareRenderer->offsetScy = 0;
206 softwareRenderer->offsetWx = 0;
207 softwareRenderer->offsetWy = 0;
208
209 int i;
210 for (i = 0; i < 64; ++i) {
211 softwareRenderer->lookup[i] = i;
212 softwareRenderer->lookup[i] = i;
213 softwareRenderer->lookup[i] = i;
214 softwareRenderer->lookup[i] = i;
215 }
216}
217
218static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer) {
219 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
220 UNUSED(softwareRenderer);
221}
222
223static void GBVideoSoftwareRendererUpdateWindow(struct GBVideoSoftwareRenderer* renderer, bool before, bool after) {
224 if (renderer->lastY >= GB_VIDEO_VERTICAL_PIXELS || after == before) {
225 return;
226 }
227 if (renderer->lastY >= renderer->wy) {
228 if (!after) {
229 renderer->currentWy -= renderer->lastY;
230 renderer->hasWindow = true;
231 } else {
232 if (!renderer->hasWindow) {
233 if (renderer->lastY > renderer->wy) {
234 renderer->currentWy = GB_VIDEO_VERTICAL_PIXELS;
235 } else {
236 renderer->currentWy = renderer->lastY - renderer->wy;
237 if (renderer->lastY == renderer->wy && renderer->lastX > renderer->wx) {
238 ++renderer->currentWy;
239 }
240 }
241 } else {
242 renderer->currentWy += renderer->lastY;
243 }
244 }
245 }
246}
247
248static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value) {
249 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
250 if (renderer->cache) {
251 GBVideoCacheWriteVideoRegister(renderer->cache, address, value);
252 }
253 bool wasWindow = _inWindow(softwareRenderer);
254 switch (address) {
255 case REG_LCDC:
256 softwareRenderer->lcdc = value;
257 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
258 break;
259 case REG_SCY:
260 softwareRenderer->scy = value;
261 break;
262 case REG_SCX:
263 softwareRenderer->scx = value;
264 break;
265 case REG_WY:
266 softwareRenderer->wy = value;
267 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
268 break;
269 case REG_WX:
270 softwareRenderer->wx = value;
271 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
272 break;
273 case REG_BGP:
274 softwareRenderer->lookup[0] = value & 3;
275 softwareRenderer->lookup[1] = (value >> 2) & 3;
276 softwareRenderer->lookup[2] = (value >> 4) & 3;
277 softwareRenderer->lookup[3] = (value >> 6) & 3;
278 break;
279 case REG_OBP0:
280 softwareRenderer->lookup[0x20 + 0] = value & 3;
281 softwareRenderer->lookup[0x20 + 1] = (value >> 2) & 3;
282 softwareRenderer->lookup[0x20 + 2] = (value >> 4) & 3;
283 softwareRenderer->lookup[0x20 + 3] = (value >> 6) & 3;
284 break;
285 case REG_OBP1:
286 softwareRenderer->lookup[0x24 + 0] = value & 3;
287 softwareRenderer->lookup[0x24 + 1] = (value >> 2) & 3;
288 softwareRenderer->lookup[0x24 + 2] = (value >> 4) & 3;
289 softwareRenderer->lookup[0x24 + 3] = (value >> 6) & 3;
290 break;
291 }
292 return value;
293}
294
295static void GBVideoSoftwareRendererWriteSGBPacket(struct GBVideoRenderer* renderer, uint8_t* data) {
296 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
297 memcpy(softwareRenderer->sgbPacket, data, sizeof(softwareRenderer->sgbPacket));
298 int i;
299 softwareRenderer->sgbCommandHeader = data[0];
300 softwareRenderer->sgbTransfer = 0;
301 int set;
302 int sets;
303 int attrX;
304 int attrY;
305 int attrDirection;
306 int pBefore;
307 int pAfter;
308 int pDiv;
309 switch (softwareRenderer->sgbCommandHeader >> 3) {
310 case SGB_PAL_SET:
311 softwareRenderer->sgbPacket[1] = data[9];
312 if (!(data[9] & 0x80)) {
313 break;
314 }
315 // Fall through
316 case SGB_ATTR_SET:
317 set = softwareRenderer->sgbPacket[1] & 0x3F;
318 if (set <= 0x2C) {
319 memcpy(renderer->sgbAttributes, &renderer->sgbAttributeFiles[set * 90], 90);
320 }
321 break;
322 case SGB_ATTR_BLK:
323 sets = softwareRenderer->sgbPacket[1];
324 i = 2;
325 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; i += 6, --sets) {
326 _parseAttrBlock(softwareRenderer, i);
327 }
328 break;
329 case SGB_ATTR_LIN:
330 sets = softwareRenderer->sgbPacket[1];
331 i = 2;
332 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; ++i, --sets) {
333 _parseAttrLine(softwareRenderer, i);
334 }
335 break;
336 case SGB_ATTR_DIV:
337 pAfter = softwareRenderer->sgbPacket[1] & 3;
338 pBefore = (softwareRenderer->sgbPacket[1] >> 2) & 3;
339 pDiv = (softwareRenderer->sgbPacket[1] >> 4) & 3;
340 attrX = softwareRenderer->sgbPacket[2];
341 if (softwareRenderer->sgbPacket[1] & 0x40) {
342 if (attrX > GB_VIDEO_VERTICAL_PIXELS / 8) {
343 attrX = GB_VIDEO_VERTICAL_PIXELS / 8;
344 }
345 int j;
346 for (j = 0; j < attrX; ++j) {
347 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
348 _setAttribute(renderer->sgbAttributes, i, j, pBefore);
349 }
350 }
351 if (attrX < GB_VIDEO_VERTICAL_PIXELS / 8) {
352 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
353 _setAttribute(renderer->sgbAttributes, i, attrX, pDiv);
354 }
355
356 }
357 for (; j < GB_VIDEO_VERTICAL_PIXELS / 8; ++j) {
358 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
359 _setAttribute(renderer->sgbAttributes, i, j, pAfter);
360 }
361 }
362 } else {
363 if (attrX > GB_VIDEO_HORIZONTAL_PIXELS / 8) {
364 attrX = GB_VIDEO_HORIZONTAL_PIXELS / 8;
365 }
366 int j;
367 for (j = 0; j < attrX; ++j) {
368 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++i) {
369 _setAttribute(renderer->sgbAttributes, j, i, pBefore);
370 }
371 }
372 if (attrX < GB_VIDEO_HORIZONTAL_PIXELS / 8) {
373 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS / 8; ++i) {
374 _setAttribute(renderer->sgbAttributes, attrX, i, pDiv);
375 }
376
377 }
378 for (; j < GB_VIDEO_HORIZONTAL_PIXELS / 8; ++j) {
379 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS / 8; ++i) {
380 _setAttribute(renderer->sgbAttributes, j, i, pAfter);
381 }
382 }
383 }
384 break;
385 case SGB_ATTR_CHR:
386 attrX = softwareRenderer->sgbPacket[1];
387 attrY = softwareRenderer->sgbPacket[2];
388 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
389 attrX = 0;
390 }
391 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
392 attrY = 0;
393 }
394 sets = softwareRenderer->sgbPacket[3];
395 sets |= softwareRenderer->sgbPacket[4] << 8;
396 attrDirection = softwareRenderer->sgbPacket[5];
397 i = 6;
398 for (; i < (softwareRenderer->sgbCommandHeader & 7) << 4 && sets; ++i) {
399 int j;
400 for (j = 0; j < 4 && sets; ++j, --sets) {
401 uint8_t p = softwareRenderer->sgbPacket[i] >> (6 - j * 2);
402 _setAttribute(renderer->sgbAttributes, attrX, attrY, p & 3);
403 if (attrDirection) {
404 ++attrY;
405 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
406 attrY = 0;
407 ++attrX;
408 }
409 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
410 attrX = 0;
411 }
412 } else {
413 ++attrX;
414 if (attrX >= GB_VIDEO_HORIZONTAL_PIXELS / 8) {
415 attrX = 0;
416 ++attrY;
417 }
418 if (attrY >= GB_VIDEO_VERTICAL_PIXELS / 8) {
419 attrY = 0;
420 }
421 }
422 }
423 }
424
425 break;
426 case SGB_ATRC_EN:
427 case SGB_MASK_EN:
428 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
429 _regenerateSGBBorder(softwareRenderer);
430 }
431 }
432}
433
434static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value) {
435 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
436 color_t color = mColorFrom555(value);
437 if (softwareRenderer->model & GB_MODEL_SGB) {
438 if (index < 0x10 && index && !(index & 3)) {
439 color = softwareRenderer->palette[0];
440 } else if (index >= 0x40 && !(index & 0xF)) {
441 color = softwareRenderer->palette[0];
442 }
443 }
444 if (renderer->cache) {
445 mCacheSetWritePalette(renderer->cache, index, color);
446 }
447 if (softwareRenderer->model == GB_MODEL_AGB) {
448 unsigned r = M_R5(value);
449 unsigned g = M_G5(value);
450 unsigned b = M_B5(value);
451 r = r * r;
452 g = g * g;
453 b = b * b;
454#ifdef COLOR_16_BIT
455 r /= 31;
456 g /= 31;
457 b /= 31;
458 color = mColorFrom555(r | (g << 5) | (b << 10));
459#else
460 r >>= 2;
461 g >>= 2;
462 b >>= 2;
463 color = r | (g << 8) | (b << 16);
464#endif
465 }
466 softwareRenderer->palette[index] = color;
467
468 if (softwareRenderer->model & GB_MODEL_SGB && !index && GBRegisterLCDCIsEnable(softwareRenderer->lcdc)) {
469 renderer->writePalette(renderer, 0x04, value);
470 renderer->writePalette(renderer, 0x08, value);
471 renderer->writePalette(renderer, 0x0C, value);
472 renderer->writePalette(renderer, 0x40, value);
473 renderer->writePalette(renderer, 0x50, value);
474 renderer->writePalette(renderer, 0x60, value);
475 renderer->writePalette(renderer, 0x70, value);
476 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
477 _regenerateSGBBorder(softwareRenderer);
478 }
479 }
480}
481
482static void GBVideoSoftwareRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address) {
483 if (renderer->cache) {
484 mCacheSetWriteVRAM(renderer->cache, address);
485 }
486}
487
488static void GBVideoSoftwareRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam) {
489 UNUSED(renderer);
490 UNUSED(oam);
491 // Nothing to do
492}
493
494static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax) {
495 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
496 softwareRenderer->lastY = y;
497 softwareRenderer->lastX = endX;
498 uint8_t* maps = &softwareRenderer->d.vram[GB_BASE_MAP];
499 if (GBRegisterLCDCIsTileMap(softwareRenderer->lcdc)) {
500 maps += GB_SIZE_MAP;
501 }
502 if (softwareRenderer->d.disableBG) {
503 memset(&softwareRenderer->row[startX], 0, endX - startX);
504 }
505 if (GBRegisterLCDCIsBgEnable(softwareRenderer->lcdc) || softwareRenderer->model >= GB_MODEL_CGB) {
506 int wy = softwareRenderer->wy + softwareRenderer->currentWy;
507 int wx = softwareRenderer->wx + softwareRenderer->currentWx - 7;
508 if (GBRegisterLCDCIsWindow(softwareRenderer->lcdc) && wy <= y && wx <= endX) {
509 if (wx > 0 && !softwareRenderer->d.disableBG) {
510 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, wx, softwareRenderer->scx - softwareRenderer->offsetScx, softwareRenderer->scy + y - softwareRenderer->offsetScy);
511 }
512
513 maps = &softwareRenderer->d.vram[GB_BASE_MAP];
514 if (GBRegisterLCDCIsWindowTileMap(softwareRenderer->lcdc)) {
515 maps += GB_SIZE_MAP;
516 }
517 if (!softwareRenderer->d.disableWIN) {
518 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, wx, endX, -wx - softwareRenderer->offsetWx, y - wy - softwareRenderer->offsetWy);
519 }
520 } else if (!softwareRenderer->d.disableBG) {
521 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, endX, softwareRenderer->scx - softwareRenderer->offsetScx, softwareRenderer->scy + y - softwareRenderer->offsetScy);
522 }
523 } else if (!softwareRenderer->d.disableBG) {
524 memset(&softwareRenderer->row[startX], 0, endX - startX);
525 }
526
527 if (GBRegisterLCDCIsObjEnable(softwareRenderer->lcdc) && !softwareRenderer->d.disableOBJ) {
528 size_t i;
529 for (i = 0; i < oamMax; ++i) {
530 GBVideoSoftwareRendererDrawObj(softwareRenderer, &obj[i], startX, endX, y);
531 }
532 }
533
534 size_t sgbOffset = 0;
535 if (softwareRenderer->model & GB_MODEL_SGB && softwareRenderer->sgbBorders) {
536 sgbOffset = softwareRenderer->outputBufferStride * 40 + 48;
537 }
538 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y + sgbOffset];
539 int x = startX;
540 int p = 0;
541 switch (softwareRenderer->d.sgbRenderMode) {
542 case 0:
543 if (softwareRenderer->model & GB_MODEL_SGB) {
544 p = softwareRenderer->d.sgbAttributes[(startX >> 5) + 5 * (y >> 3)];
545 p >>= 6 - ((x / 4) & 0x6);
546 p &= 3;
547 p <<= 2;
548 }
549 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
550 row[x] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
551 }
552 for (; x + 7 < (endX & ~7); x += 8) {
553 if (softwareRenderer->model & GB_MODEL_SGB) {
554 p = softwareRenderer->d.sgbAttributes[(x >> 5) + 5 * (y >> 3)];
555 p >>= 6 - ((x / 4) & 0x6);
556 p &= 3;
557 p <<= 2;
558 }
559 row[x + 0] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
560 row[x + 1] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 1] & 0x7F]];
561 row[x + 2] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 2] & 0x7F]];
562 row[x + 3] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 3] & 0x7F]];
563 row[x + 4] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 4] & 0x7F]];
564 row[x + 5] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 5] & 0x7F]];
565 row[x + 6] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 6] & 0x7F]];
566 row[x + 7] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x + 7] & 0x7F]];
567 }
568 if (softwareRenderer->model & GB_MODEL_SGB) {
569 p = softwareRenderer->d.sgbAttributes[(x >> 5) + 5 * (y >> 3)];
570 p >>= 6 - ((x / 4) & 0x6);
571 p &= 3;
572 p <<= 2;
573 }
574 for (; x < endX; ++x) {
575 row[x] = softwareRenderer->palette[p | softwareRenderer->lookup[softwareRenderer->row[x] & 0x7F]];
576 }
577 break;
578 case 1:
579 break;
580 case 2:
581 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
582 row[x] = 0;
583 }
584 for (; x + 7 < (endX & ~7); x += 8) {
585 row[x] = 0;
586 row[x + 1] = 0;
587 row[x + 2] = 0;
588 row[x + 3] = 0;
589 row[x + 4] = 0;
590 row[x + 5] = 0;
591 row[x + 6] = 0;
592 row[x + 7] = 0;
593 }
594 for (; x < endX; ++x) {
595 row[x] = 0;
596 }
597 break;
598 case 3:
599 for (; x < ((startX + 7) & ~7) && x < endX; ++x) {
600 row[x] = softwareRenderer->palette[0];
601 }
602 for (; x + 7 < (endX & ~7); x += 8) {
603 row[x] = softwareRenderer->palette[0];
604 row[x + 1] = softwareRenderer->palette[0];
605 row[x + 2] = softwareRenderer->palette[0];
606 row[x + 3] = softwareRenderer->palette[0];
607 row[x + 4] = softwareRenderer->palette[0];
608 row[x + 5] = softwareRenderer->palette[0];
609 row[x + 6] = softwareRenderer->palette[0];
610 row[x + 7] = softwareRenderer->palette[0];
611 }
612 for (; x < endX; ++x) {
613 row[x] = softwareRenderer->palette[0];
614 }
615 break;
616 }
617}
618
619static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y) {
620 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
621
622 softwareRenderer->lastX = 0;
623 softwareRenderer->currentWx = 0;
624
625 if (softwareRenderer->sgbTransfer == 1) {
626 size_t offset = 2 * ((y & 7) + (y >> 3) * GB_VIDEO_HORIZONTAL_PIXELS);
627 if (offset >= 0x1000) {
628 return;
629 }
630 uint8_t* buffer = NULL;
631 switch (softwareRenderer->sgbCommandHeader >> 3) {
632 case SGB_PAL_TRN:
633 buffer = renderer->sgbPalRam;
634 break;
635 case SGB_CHR_TRN:
636 buffer = &renderer->sgbCharRam[SGB_SIZE_CHAR_RAM / 2 * (softwareRenderer->sgbPacket[1] & 1)];
637 break;
638 case SGB_PCT_TRN:
639 buffer = renderer->sgbMapRam;
640 break;
641 case SGB_ATTR_TRN:
642 buffer = renderer->sgbAttributeFiles;
643 break;
644 default:
645 break;
646 }
647 if (buffer) {
648 int i;
649 for (i = 0; i < GB_VIDEO_HORIZONTAL_PIXELS; i += 8) {
650 if (UNLIKELY(offset + (i << 1) + 1 >= 0x1000)) {
651 break;
652 }
653 uint8_t hi = 0;
654 uint8_t lo = 0;
655 hi |= (softwareRenderer->row[i + 0] & 0x2) << 6;
656 lo |= (softwareRenderer->row[i + 0] & 0x1) << 7;
657 hi |= (softwareRenderer->row[i + 1] & 0x2) << 5;
658 lo |= (softwareRenderer->row[i + 1] & 0x1) << 6;
659 hi |= (softwareRenderer->row[i + 2] & 0x2) << 4;
660 lo |= (softwareRenderer->row[i + 2] & 0x1) << 5;
661 hi |= (softwareRenderer->row[i + 3] & 0x2) << 3;
662 lo |= (softwareRenderer->row[i + 3] & 0x1) << 4;
663 hi |= (softwareRenderer->row[i + 4] & 0x2) << 2;
664 lo |= (softwareRenderer->row[i + 4] & 0x1) << 3;
665 hi |= (softwareRenderer->row[i + 5] & 0x2) << 1;
666 lo |= (softwareRenderer->row[i + 5] & 0x1) << 2;
667 hi |= (softwareRenderer->row[i + 6] & 0x2) << 0;
668 lo |= (softwareRenderer->row[i + 6] & 0x1) << 1;
669 hi |= (softwareRenderer->row[i + 7] & 0x2) >> 1;
670 lo |= (softwareRenderer->row[i + 7] & 0x1) >> 0;
671 buffer[offset + (i << 1) + 0] = lo;
672 buffer[offset + (i << 1) + 1] = hi;
673 }
674 }
675 }
676}
677
678static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer) {
679 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
680
681 if (softwareRenderer->temporaryBuffer) {
682 mappedMemoryFree(softwareRenderer->temporaryBuffer, GB_VIDEO_HORIZONTAL_PIXELS * GB_VIDEO_VERTICAL_PIXELS * 4);
683 softwareRenderer->temporaryBuffer = 0;
684 }
685 if (!GBRegisterLCDCIsEnable(softwareRenderer->lcdc)) {
686 _clearScreen(softwareRenderer);
687 }
688 if (softwareRenderer->model & GB_MODEL_SGB) {
689 switch (softwareRenderer->sgbCommandHeader >> 3) {
690 case SGB_PAL_SET:
691 case SGB_ATTR_SET:
692 if (softwareRenderer->sgbPacket[1] & 0x40) {
693 renderer->sgbRenderMode = 0;
694 }
695 break;
696 case SGB_PAL_TRN:
697 case SGB_CHR_TRN:
698 case SGB_PCT_TRN:
699 if (softwareRenderer->sgbTransfer > 0 && softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
700 // Make sure every buffer sees this if we're multibuffering
701 _regenerateSGBBorder(softwareRenderer);
702 }
703 // Fall through
704 case SGB_ATTR_TRN:
705 ++softwareRenderer->sgbTransfer;
706 if (softwareRenderer->sgbTransfer == 5) {
707 softwareRenderer->sgbCommandHeader = 0;
708 }
709 break;
710 default:
711 break;
712 }
713 }
714 softwareRenderer->lastY = GB_VIDEO_VERTICAL_PIXELS;
715 softwareRenderer->lastX = 0;
716 softwareRenderer->currentWy = 0;
717 softwareRenderer->currentWx = 0;
718 softwareRenderer->hasWindow = false;
719}
720
721static void GBVideoSoftwareRendererEnableSGBBorder(struct GBVideoRenderer* renderer, bool enable) {
722 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
723 if (softwareRenderer->model & GB_MODEL_SGB) {
724 if (enable == softwareRenderer->sgbBorders) {
725 return;
726 }
727 softwareRenderer->sgbBorders = enable;
728 if (softwareRenderer->sgbBorders && !renderer->sgbRenderMode) {
729 _regenerateSGBBorder(softwareRenderer);
730 }
731 }
732}
733
734static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy) {
735 uint8_t* data = renderer->d.vram;
736 uint8_t* attr = &maps[GB_SIZE_VRAM_BANK0];
737 if (!GBRegisterLCDCIsTileData(renderer->lcdc)) {
738 data += 0x1000;
739 }
740 int topY = ((sy >> 3) & 0x1F) * 0x20;
741 int bottomY = sy & 7;
742 if (startX < 0) {
743 startX = 0;
744 }
745 int x;
746 if ((startX + sx) & 7) {
747 int startX2 = startX + 8 - ((startX + sx) & 7);
748 for (x = startX; x < startX2; ++x) {
749 uint8_t* localData = data;
750 int localY = bottomY;
751 int topX = ((x + sx) >> 3) & 0x1F;
752 int bottomX = 7 - ((x + sx) & 7);
753 int bgTile;
754 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
755 bgTile = maps[topX + topY];
756 } else {
757 bgTile = ((int8_t*) maps)[topX + topY];
758 }
759 int p = 0;
760 if (renderer->model >= GB_MODEL_CGB) {
761 GBObjAttributes attrs = attr[topX + topY];
762 p = GBObjAttributesGetCGBPalette(attrs) * 4;
763 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
764 p |= 0x80;
765 }
766 if (GBObjAttributesIsBank(attrs)) {
767 localData += GB_SIZE_VRAM_BANK0;
768 }
769 if (GBObjAttributesIsYFlip(attrs)) {
770 localY = 7 - bottomY;
771 }
772 if (GBObjAttributesIsXFlip(attrs)) {
773 bottomX = 7 - bottomX;
774 }
775 }
776 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
777 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
778 tileDataUpper >>= bottomX;
779 tileDataLower >>= bottomX;
780 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
781 }
782 startX = startX2;
783 }
784 for (x = startX; x < endX; x += 8) {
785 uint8_t* localData = data;
786 int localY = bottomY;
787 int topX = ((x + sx) >> 3) & 0x1F;
788 int bgTile;
789 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
790 bgTile = maps[topX + topY];
791 } else {
792 bgTile = ((int8_t*) maps)[topX + topY];
793 }
794 int p = 0;
795 if (renderer->model >= GB_MODEL_CGB) {
796 GBObjAttributes attrs = attr[topX + topY];
797 p = GBObjAttributesGetCGBPalette(attrs) * 4;
798 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
799 p |= 0x80;
800 }
801 if (GBObjAttributesIsBank(attrs)) {
802 localData += GB_SIZE_VRAM_BANK0;
803 }
804 if (GBObjAttributesIsYFlip(attrs)) {
805 localY = 7 - bottomY;
806 }
807 if (GBObjAttributesIsXFlip(attrs)) {
808 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
809 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
810 renderer->row[x + 0] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
811 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
812 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
813 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
814 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
815 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
816 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
817 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
818 continue;
819 }
820 }
821 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
822 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
823 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
824 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
825 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
826 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
827 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
828 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
829 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
830 renderer->row[x + 0] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
831 }
832}
833
834static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y) {
835 int objX = obj->x + renderer->objOffsetX;
836 int ix = objX - 8;
837 if (endX < ix || startX >= ix + 8) {
838 return;
839 }
840 if (objX < endX) {
841 endX = objX;
842 }
843 if (objX - 8 > startX) {
844 startX = objX - 8;
845 }
846 if (startX < 0) {
847 startX = 0;
848 }
849 uint8_t* data = renderer->d.vram;
850 int tileOffset = 0;
851 int bottomY;
852 int objY = obj->y + renderer->objOffsetY;
853 if (GBObjAttributesIsYFlip(obj->attr)) {
854 bottomY = 7 - ((y - objY - 16) & 7);
855 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - objY < -8) {
856 ++tileOffset;
857 }
858 } else {
859 bottomY = (y - objY - 16) & 7;
860 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - objY >= -8) {
861 ++tileOffset;
862 }
863 }
864 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && obj->tile & 1) {
865 --tileOffset;
866 }
867 uint8_t mask = GBObjAttributesIsPriority(obj->attr) ? 0x63 : 0x60;
868 uint8_t mask2 = GBObjAttributesIsPriority(obj->attr) ? 0 : 0x83;
869 int p;
870 if (renderer->model >= GB_MODEL_CGB) {
871 p = (GBObjAttributesGetCGBPalette(obj->attr) + 8) * 4;
872 if (GBObjAttributesIsBank(obj->attr)) {
873 data += GB_SIZE_VRAM_BANK0;
874 }
875 if (!GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
876 mask = 0x60;
877 mask2 = 0x83;
878 }
879 } else {
880 p = (GBObjAttributesGetPalette(obj->attr) + 8) * 4;
881 }
882 int bottomX;
883 int x = startX;
884 if ((x - objX) & 7) {
885 for (; x < endX; ++x) {
886 if (GBObjAttributesIsXFlip(obj->attr)) {
887 bottomX = (x - objX) & 7;
888 } else {
889 bottomX = 7 - ((x - objX) & 7);
890 }
891 int objTile = obj->tile + tileOffset;
892 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
893 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
894 tileDataUpper >>= bottomX;
895 tileDataLower >>= bottomX;
896 color_t current = renderer->row[x];
897 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
898 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
899 }
900 }
901 } else if (GBObjAttributesIsXFlip(obj->attr)) {
902 int objTile = obj->tile + tileOffset;
903 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
904 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
905 color_t current;
906 current = renderer->row[x];
907 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
908 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
909 }
910 current = renderer->row[x + 1];
911 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
912 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
913 }
914 current = renderer->row[x + 2];
915 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
916 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
917 }
918 current = renderer->row[x + 3];
919 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
920 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
921 }
922 current = renderer->row[x + 4];
923 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
924 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
925 }
926 current = renderer->row[x + 5];
927 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
928 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
929 }
930 current = renderer->row[x + 6];
931 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
932 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
933 }
934 current = renderer->row[x + 7];
935 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
936 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
937 }
938 } else {
939 int objTile = obj->tile + tileOffset;
940 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
941 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
942 color_t current;
943 current = renderer->row[x + 7];
944 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
945 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
946 }
947 current = renderer->row[x + 6];
948 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
949 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
950 }
951 current = renderer->row[x + 5];
952 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
953 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
954 }
955 current = renderer->row[x + 4];
956 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
957 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
958 }
959 current = renderer->row[x + 3];
960 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
961 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
962 }
963 current = renderer->row[x + 2];
964 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
965 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
966 }
967 current = renderer->row[x + 1];
968 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
969 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
970 }
971 current = renderer->row[x];
972 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
973 renderer->row[x] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
974 }
975 }
976}
977
978static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels) {
979 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
980 *stride = softwareRenderer->outputBufferStride;
981 *pixels = softwareRenderer->outputBuffer;
982}
983
984static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels) {
985 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
986 // TODO: Share with GBAVideoSoftwareRendererGetPixels
987
988 const color_t* colorPixels = pixels;
989 unsigned i;
990 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS; ++i) {
991 memmove(&softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * i], &colorPixels[stride * i], GB_VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL);
992 }
993}