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/tile-cache.h>
9#include <mgba/internal/gb/io.h>
10#include <mgba-util/memory.h>
11
12static void GBVideoSoftwareRendererInit(struct GBVideoRenderer* renderer, enum GBModel model);
13static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer);
14static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value);
15static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value);
16static void GBVideoSoftwareRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address);
17static void GBVideoSoftwareRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam);
18static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax);
19static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y);
20static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer);
21static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels);
22static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels);
23
24static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy);
25static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y);
26
27static void _clearScreen(struct GBVideoSoftwareRenderer* renderer) {
28 int y;
29 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS; ++y) {
30 color_t* row = &renderer->outputBuffer[renderer->outputBufferStride * y];
31 int x;
32 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS; x += 4) {
33 row[x + 0] = renderer->palette[0];
34 row[x + 1] = renderer->palette[0];
35 row[x + 2] = renderer->palette[0];
36 row[x + 3] = renderer->palette[0];
37 }
38 }
39}
40
41static bool _inWindow(struct GBVideoSoftwareRenderer* renderer) {
42 return GBRegisterLCDCIsWindow(renderer->lcdc) && GB_VIDEO_HORIZONTAL_PIXELS + 7 > renderer->wx;
43}
44
45void GBVideoSoftwareRendererCreate(struct GBVideoSoftwareRenderer* renderer) {
46 renderer->d.init = GBVideoSoftwareRendererInit;
47 renderer->d.deinit = GBVideoSoftwareRendererDeinit;
48 renderer->d.writeVideoRegister = GBVideoSoftwareRendererWriteVideoRegister;
49 renderer->d.writePalette = GBVideoSoftwareRendererWritePalette;
50 renderer->d.writeVRAM = GBVideoSoftwareRendererWriteVRAM;
51 renderer->d.writeOAM = GBVideoSoftwareRendererWriteOAM;
52 renderer->d.drawRange = GBVideoSoftwareRendererDrawRange;
53 renderer->d.finishScanline = GBVideoSoftwareRendererFinishScanline;
54 renderer->d.finishFrame = GBVideoSoftwareRendererFinishFrame;
55 renderer->d.getPixels = GBVideoSoftwareRendererGetPixels;
56 renderer->d.putPixels = GBVideoSoftwareRendererPutPixels;
57
58 renderer->d.disableBG = false;
59 renderer->d.disableOBJ = false;
60 renderer->d.disableWIN = false;
61
62 renderer->temporaryBuffer = 0;
63}
64
65static void GBVideoSoftwareRendererInit(struct GBVideoRenderer* renderer, enum GBModel model) {
66 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
67 softwareRenderer->lcdc = 0;
68 softwareRenderer->scy = 0;
69 softwareRenderer->scx = 0;
70 softwareRenderer->wy = 0;
71 softwareRenderer->currentWy = 0;
72 softwareRenderer->lastY = 0;
73 softwareRenderer->hasWindow = false;
74 softwareRenderer->wx = 0;
75 softwareRenderer->model = model;
76}
77
78static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer) {
79 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
80 UNUSED(softwareRenderer);
81}
82
83static void GBVideoSoftwareRendererUpdateWindow(struct GBVideoSoftwareRenderer* renderer, bool before, bool after) {
84 if (renderer->lastY >= GB_VIDEO_VERTICAL_PIXELS || after == before) {
85 return;
86 }
87 if (renderer->lastY >= renderer->wy) {
88 if (!after) {
89 renderer->currentWy -= renderer->lastY;
90 renderer->hasWindow = true;
91 } else {
92 if (!renderer->hasWindow) {
93 renderer->currentWy = renderer->lastY - renderer->wy;
94 } else {
95 renderer->currentWy += renderer->lastY;
96 }
97 }
98 }
99}
100
101static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value) {
102 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
103 bool wasWindow = _inWindow(softwareRenderer);
104 switch (address) {
105 case REG_LCDC:
106 softwareRenderer->lcdc = value;
107 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
108 break;
109 case REG_SCY:
110 softwareRenderer->scy = value;
111 break;
112 case REG_SCX:
113 softwareRenderer->scx = value;
114 break;
115 case REG_WY:
116 softwareRenderer->wy = value;
117 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
118 break;
119 case REG_WX:
120 softwareRenderer->wx = value;
121 GBVideoSoftwareRendererUpdateWindow(softwareRenderer, wasWindow, _inWindow(softwareRenderer));
122 break;
123 }
124 return value;
125}
126
127static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value) {
128 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
129#ifdef COLOR_16_BIT
130#ifdef COLOR_5_6_5
131 color_t color = 0;
132 color |= (value & 0x001F) << 11;
133 color |= (value & 0x03E0) << 1;
134 color |= (value & 0x7C00) >> 10;
135#else
136 color_t color = value;
137#endif
138#else
139 color_t color = 0;
140 color |= (value << 3) & 0xF8;
141 color |= (value << 6) & 0xF800;
142 color |= (value << 9) & 0xF80000;
143 color |= (color >> 5) & 0x070707;
144#endif
145 softwareRenderer->palette[index] = color;
146 if (renderer->cache) {
147 mTileCacheWritePalette(renderer->cache, index << 1);
148 }
149}
150
151static void GBVideoSoftwareRendererWriteVRAM(struct GBVideoRenderer* renderer, uint16_t address) {
152 if (renderer->cache) {
153 mTileCacheWriteVRAM(renderer->cache, address);
154 }
155}
156
157static void GBVideoSoftwareRendererWriteOAM(struct GBVideoRenderer* renderer, uint16_t oam) {
158 UNUSED(renderer);
159 UNUSED(oam);
160 // Nothing to do
161}
162
163static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax) {
164 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
165 softwareRenderer->lastY = y;
166 uint8_t* maps = &softwareRenderer->d.vram[GB_BASE_MAP];
167 if (GBRegisterLCDCIsTileMap(softwareRenderer->lcdc)) {
168 maps += GB_SIZE_MAP;
169 }
170 if (softwareRenderer->d.disableBG) {
171 memset(&softwareRenderer->row[startX], 0, endX - startX);
172 }
173 if (GBRegisterLCDCIsBgEnable(softwareRenderer->lcdc) || softwareRenderer->model >= GB_MODEL_CGB) {
174 int wy = softwareRenderer->wy + softwareRenderer->currentWy;
175 if (GBRegisterLCDCIsWindow(softwareRenderer->lcdc) && wy <= y && endX >= softwareRenderer->wx - 7) {
176 if (softwareRenderer->wx - 7 > 0 && !softwareRenderer->d.disableBG) {
177 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, softwareRenderer->wx - 7, softwareRenderer->scx, softwareRenderer->scy + y);
178 }
179
180 maps = &softwareRenderer->d.vram[GB_BASE_MAP];
181 if (GBRegisterLCDCIsWindowTileMap(softwareRenderer->lcdc)) {
182 maps += GB_SIZE_MAP;
183 }
184 if (!softwareRenderer->d.disableWIN) {
185 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, softwareRenderer->wx - 7, endX, 7 - softwareRenderer->wx, y - wy);
186 }
187 } else if (!softwareRenderer->d.disableBG) {
188 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, endX, softwareRenderer->scx, softwareRenderer->scy + y);
189 }
190 } else if (!softwareRenderer->d.disableBG) {
191 memset(&softwareRenderer->row[startX], 0, endX - startX);
192 }
193
194 if (GBRegisterLCDCIsObjEnable(softwareRenderer->lcdc) && !softwareRenderer->d.disableOBJ) {
195 size_t i;
196 for (i = 0; i < oamMax; ++i) {
197 GBVideoSoftwareRendererDrawObj(softwareRenderer, &obj[i], startX, endX, y);
198 }
199 }
200 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y];
201 int x;
202 for (x = startX; x + 7 < (endX & ~7); x += 8) {
203 row[x] = softwareRenderer->palette[softwareRenderer->row[x] & 0x7F];
204 row[x + 1] = softwareRenderer->palette[softwareRenderer->row[x + 1] & 0x7F];
205 row[x + 2] = softwareRenderer->palette[softwareRenderer->row[x + 2] & 0x7F];
206 row[x + 3] = softwareRenderer->palette[softwareRenderer->row[x + 3] & 0x7F];
207 row[x + 4] = softwareRenderer->palette[softwareRenderer->row[x + 4] & 0x7F];
208 row[x + 5] = softwareRenderer->palette[softwareRenderer->row[x + 5] & 0x7F];
209 row[x + 6] = softwareRenderer->palette[softwareRenderer->row[x + 6] & 0x7F];
210 row[x + 7] = softwareRenderer->palette[softwareRenderer->row[x + 7] & 0x7F];
211 }
212 for (; x < endX; ++x) {
213 row[x] = softwareRenderer->palette[softwareRenderer->row[x] & 0x7F];
214 }
215}
216
217static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y) {
218 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
219 if (GBRegisterLCDCIsWindow(softwareRenderer->lcdc) && softwareRenderer->wy <= y && softwareRenderer->wx - 7 < GB_VIDEO_HORIZONTAL_PIXELS) {
220 ++softwareRenderer->currentWy;
221 }
222}
223
224static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer) {
225 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
226
227 if (softwareRenderer->temporaryBuffer) {
228 mappedMemoryFree(softwareRenderer->temporaryBuffer, GB_VIDEO_HORIZONTAL_PIXELS * GB_VIDEO_VERTICAL_PIXELS * 4);
229 softwareRenderer->temporaryBuffer = 0;
230 }
231 if (!GBRegisterLCDCIsEnable(softwareRenderer->lcdc)) {
232 _clearScreen(softwareRenderer);
233 }
234 softwareRenderer->lastY = GB_VIDEO_VERTICAL_PIXELS;
235 softwareRenderer->currentWy = 0;
236 softwareRenderer->hasWindow = false;
237}
238
239static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy) {
240 uint8_t* data = renderer->d.vram;
241 uint8_t* attr = &maps[GB_SIZE_VRAM_BANK0];
242 if (!GBRegisterLCDCIsTileData(renderer->lcdc)) {
243 data += 0x1000;
244 }
245 int topY = ((sy >> 3) & 0x1F) * 0x20;
246 int bottomY = sy & 7;
247 if (startX < 0) {
248 startX = 0;
249 }
250 int x;
251 if ((startX + sx) & 7) {
252 int startX2 = startX + 8 - ((startX + sx) & 7);
253 for (x = startX; x < startX2; ++x) {
254 uint8_t* localData = data;
255 int localY = bottomY;
256 int topX = ((x + sx) >> 3) & 0x1F;
257 int bottomX = 7 - ((x + sx) & 7);
258 int bgTile;
259 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
260 bgTile = maps[topX + topY];
261 } else {
262 bgTile = ((int8_t*) maps)[topX + topY];
263 }
264 int p = 0;
265 if (renderer->model >= GB_MODEL_CGB) {
266 GBObjAttributes attrs = attr[topX + topY];
267 p = GBObjAttributesGetCGBPalette(attrs) * 4;
268 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
269 p |= 0x80;
270 }
271 if (GBObjAttributesIsBank(attrs)) {
272 localData += GB_SIZE_VRAM_BANK0;
273 }
274 if (GBObjAttributesIsYFlip(attrs)) {
275 localY = 7 - bottomY;
276 }
277 if (GBObjAttributesIsXFlip(attrs)) {
278 bottomX = 7 - bottomX;
279 }
280 }
281 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
282 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
283 tileDataUpper >>= bottomX;
284 tileDataLower >>= bottomX;
285 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
286 }
287 startX = startX2;
288 }
289 for (x = startX; x < endX; x += 8) {
290 uint8_t* localData = data;
291 int localY = bottomY;
292 int topX = ((x + sx) >> 3) & 0x1F;
293 int bgTile;
294 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
295 bgTile = maps[topX + topY];
296 } else {
297 bgTile = ((int8_t*) maps)[topX + topY];
298 }
299 int p = 0;
300 if (renderer->model >= GB_MODEL_CGB) {
301 GBObjAttributes attrs = attr[topX + topY];
302 p = GBObjAttributesGetCGBPalette(attrs) * 4;
303 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
304 p |= 0x80;
305 }
306 if (GBObjAttributesIsBank(attrs)) {
307 localData += GB_SIZE_VRAM_BANK0;
308 }
309 if (GBObjAttributesIsYFlip(attrs)) {
310 localY = 7 - bottomY;
311 }
312 if (GBObjAttributesIsXFlip(attrs)) {
313 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
314 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
315 renderer->row[x + 0] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
316 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
317 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
318 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
319 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
320 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
321 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
322 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
323 continue;
324 }
325 }
326 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
327 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
328 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
329 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
330 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
331 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
332 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
333 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
334 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
335 renderer->row[x + 0] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
336 }
337}
338
339static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y) {
340 int ix = obj->x - 8;
341 if (endX < ix || startX >= ix + 8) {
342 return;
343 }
344 if (obj->x < endX) {
345 endX = obj->x;
346 }
347 if (obj->x - 8 > startX) {
348 startX = obj->x - 8;
349 }
350 if (startX < 0) {
351 startX = 0;
352 }
353 uint8_t* data = renderer->d.vram;
354 int tileOffset = 0;
355 int bottomY;
356 if (GBObjAttributesIsYFlip(obj->attr)) {
357 bottomY = 7 - ((y - obj->y - 16) & 7);
358 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - obj->y < -8) {
359 ++tileOffset;
360 }
361 } else {
362 bottomY = (y - obj->y - 16) & 7;
363 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - obj->y >= -8) {
364 ++tileOffset;
365 }
366 }
367 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && obj->tile & 1) {
368 --tileOffset;
369 }
370 uint8_t mask = GBObjAttributesIsPriority(obj->attr) ? 0x63 : 0x60;
371 uint8_t mask2 = GBObjAttributesIsPriority(obj->attr) ? 0 : 0x83;
372 int p;
373 if (renderer->model >= GB_MODEL_CGB) {
374 p = (GBObjAttributesGetCGBPalette(obj->attr) + 8) * 4;
375 if (GBObjAttributesIsBank(obj->attr)) {
376 data += GB_SIZE_VRAM_BANK0;
377 }
378 if (!GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
379 mask = 0x60;
380 mask2 = 0x83;
381 }
382 } else {
383 p = (GBObjAttributesGetPalette(obj->attr) + 8) * 4;
384 }
385 int bottomX;
386 int x = startX;
387 if ((x - obj->x) & 7) {
388 for (; x < endX; ++x) {
389 if (GBObjAttributesIsXFlip(obj->attr)) {
390 bottomX = (x - obj->x) & 7;
391 } else {
392 bottomX = 7 - ((x - obj->x) & 7);
393 }
394 int objTile = obj->tile + tileOffset;
395 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
396 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
397 tileDataUpper >>= bottomX;
398 tileDataLower >>= bottomX;
399 color_t current = renderer->row[x];
400 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
401 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
402 }
403 }
404 } else if (GBObjAttributesIsXFlip(obj->attr)) {
405 int objTile = obj->tile + tileOffset;
406 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
407 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
408 color_t current;
409 current = renderer->row[x];
410 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
411 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
412 }
413 current = renderer->row[x + 1];
414 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
415 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
416 }
417 current = renderer->row[x + 2];
418 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
419 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
420 }
421 current = renderer->row[x + 3];
422 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
423 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
424 }
425 current = renderer->row[x + 4];
426 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
427 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
428 }
429 current = renderer->row[x + 5];
430 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
431 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
432 }
433 current = renderer->row[x + 6];
434 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
435 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
436 }
437 current = renderer->row[x + 7];
438 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
439 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
440 }
441 } else {
442 int objTile = obj->tile + tileOffset;
443 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
444 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
445 color_t current;
446 current = renderer->row[x + 7];
447 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
448 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
449 }
450 current = renderer->row[x + 6];
451 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
452 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
453 }
454 current = renderer->row[x + 5];
455 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
456 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
457 }
458 current = renderer->row[x + 4];
459 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
460 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
461 }
462 current = renderer->row[x + 3];
463 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
464 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
465 }
466 current = renderer->row[x + 2];
467 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
468 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
469 }
470 current = renderer->row[x + 1];
471 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
472 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
473 }
474 current = renderer->row[x];
475 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
476 renderer->row[x] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
477 }
478 }
479}
480
481static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels) {
482 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
483 *stride = softwareRenderer->outputBufferStride;
484 *pixels = softwareRenderer->outputBuffer;
485}
486
487static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels) {
488 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
489 // TODO: Share with GBAVideoSoftwareRendererGetPixels
490
491 const color_t* colorPixels = pixels;
492 unsigned i;
493 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS; ++i) {
494 memmove(&softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * i], &colorPixels[stride * i], GB_VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL);
495 }
496}