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 "software.h"
7
8#include "gb/io.h"
9#include "util/memory.h"
10
11static void GBVideoSoftwareRendererInit(struct GBVideoRenderer* renderer, enum GBModel model);
12static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer);
13static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value);
14static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value);
15static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax);
16static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y);
17static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer);
18static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels);
19static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels);
20
21static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy);
22static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y);
23
24static void _clearScreen(struct GBVideoSoftwareRenderer* renderer) {
25 // TODO: Dynamic from dmgPalette
26#ifdef COLOR_16_BIT
27#ifdef COLOR_5_6_5
28 color_t palette0 = 0xFFDF;
29#else
30 color_t palette0 = 0x7FFF;
31#endif
32#else
33 color_t palette0 = 0xF8F8F8;
34#endif
35
36 int y;
37 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS; ++y) {
38 color_t* row = &renderer->outputBuffer[renderer->outputBufferStride * y];
39 int x;
40 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS; x += 4) {
41 row[x + 0] = palette0;
42 row[x + 1] = palette0;
43 row[x + 2] = palette0;
44 row[x + 3] = palette0;
45 }
46 }
47}
48
49void GBVideoSoftwareRendererCreate(struct GBVideoSoftwareRenderer* renderer) {
50 renderer->d.init = GBVideoSoftwareRendererInit;
51 renderer->d.deinit = GBVideoSoftwareRendererDeinit;
52 renderer->d.writeVideoRegister = GBVideoSoftwareRendererWriteVideoRegister;
53 renderer->d.writePalette = GBVideoSoftwareRendererWritePalette,
54 renderer->d.drawRange = GBVideoSoftwareRendererDrawRange;
55 renderer->d.finishScanline = GBVideoSoftwareRendererFinishScanline;
56 renderer->d.finishFrame = GBVideoSoftwareRendererFinishFrame;
57 renderer->d.getPixels = GBVideoSoftwareRendererGetPixels;
58 renderer->d.putPixels = GBVideoSoftwareRendererPutPixels;
59
60 renderer->temporaryBuffer = 0;
61}
62
63static void GBVideoSoftwareRendererInit(struct GBVideoRenderer* renderer, enum GBModel model) {
64 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
65 softwareRenderer->scy = 0;
66 softwareRenderer->scx = 0;
67 softwareRenderer->wy = 0;
68 softwareRenderer->currentWy = 0;
69 softwareRenderer->wx = 0;
70 softwareRenderer->model = model;
71
72 _clearScreen(softwareRenderer);
73}
74
75static void GBVideoSoftwareRendererDeinit(struct GBVideoRenderer* renderer) {
76 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
77 UNUSED(softwareRenderer);
78}
79
80static uint8_t GBVideoSoftwareRendererWriteVideoRegister(struct GBVideoRenderer* renderer, uint16_t address, uint8_t value) {
81 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
82 switch (address) {
83 case REG_LCDC:
84 if (GBRegisterLCDCIsEnable(softwareRenderer->lcdc) && !GBRegisterLCDCIsEnable(value)) {
85 _clearScreen(softwareRenderer);
86 }
87 softwareRenderer->lcdc = value;
88 break;
89 case REG_SCY:
90 softwareRenderer->scy = value;
91 break;
92 case REG_SCX:
93 softwareRenderer->scx = value;
94 break;
95 case REG_WY:
96 softwareRenderer->wy = value;
97 break;
98 case REG_WX:
99 softwareRenderer->wx = value;
100 break;
101 }
102 return value;
103}
104
105static void GBVideoSoftwareRendererWritePalette(struct GBVideoRenderer* renderer, int index, uint16_t value) {
106 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
107#ifdef COLOR_16_BIT
108#ifdef COLOR_5_6_5
109 color_t color = 0;
110 color |= (value & 0x001F) << 11;
111 color |= (value & 0x03E0) << 1;
112 color |= (value & 0x7C00) >> 10;
113#else
114 color_t color = value;
115#endif
116#else
117 color_t color = 0;
118 color |= (value << 3) & 0xF8;
119 color |= (value << 6) & 0xF800;
120 color |= (value << 9) & 0xF80000;
121#endif
122 softwareRenderer->palette[index] = color;
123}
124
125static void GBVideoSoftwareRendererDrawRange(struct GBVideoRenderer* renderer, int startX, int endX, int y, struct GBObj* obj, size_t oamMax) {
126 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
127 uint8_t* maps = &softwareRenderer->d.vram[GB_BASE_MAP];
128 if (GBRegisterLCDCIsTileMap(softwareRenderer->lcdc)) {
129 maps += GB_SIZE_MAP;
130 }
131 if (GBRegisterLCDCIsBgEnable(softwareRenderer->lcdc) || softwareRenderer->model >= GB_MODEL_CGB) {
132 if (GBRegisterLCDCIsWindow(softwareRenderer->lcdc) && softwareRenderer->wy <= y && endX >= softwareRenderer->wx - 7) {
133 if (softwareRenderer->wx - 7 > 0) {
134 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, softwareRenderer->wx - 7, softwareRenderer->scx, softwareRenderer->scy + y);
135 }
136
137 maps = &softwareRenderer->d.vram[GB_BASE_MAP];
138 if (GBRegisterLCDCIsWindowTileMap(softwareRenderer->lcdc)) {
139 maps += GB_SIZE_MAP;
140 }
141 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, softwareRenderer->wx - 7, endX, 7 - softwareRenderer->wx, softwareRenderer->currentWy);
142 } else {
143 GBVideoSoftwareRendererDrawBackground(softwareRenderer, maps, startX, endX, softwareRenderer->scx, softwareRenderer->scy + y);
144 }
145 } else {
146 memset(&softwareRenderer->row[startX], 0, endX - startX);
147 }
148
149 if (GBRegisterLCDCIsObjEnable(softwareRenderer->lcdc)) {
150 size_t i;
151 for (i = 0; i < oamMax; ++i) {
152 GBVideoSoftwareRendererDrawObj(softwareRenderer, &obj[i], startX, endX, y);
153 }
154 }
155 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y];
156 int x;
157 for (x = startX; x + 7 < (endX & ~7); x += 8) {
158 row[x] = softwareRenderer->palette[softwareRenderer->row[x] & 0x7F];
159 row[x + 1] = softwareRenderer->palette[softwareRenderer->row[x + 1] & 0x7F];
160 row[x + 2] = softwareRenderer->palette[softwareRenderer->row[x + 2] & 0x7F];
161 row[x + 3] = softwareRenderer->palette[softwareRenderer->row[x + 3] & 0x7F];
162 row[x + 4] = softwareRenderer->palette[softwareRenderer->row[x + 4] & 0x7F];
163 row[x + 5] = softwareRenderer->palette[softwareRenderer->row[x + 5] & 0x7F];
164 row[x + 6] = softwareRenderer->palette[softwareRenderer->row[x + 6] & 0x7F];
165 row[x + 7] = softwareRenderer->palette[softwareRenderer->row[x + 7] & 0x7F];
166 }
167 for (; x < endX; ++x) {
168 row[x] = softwareRenderer->palette[softwareRenderer->row[x] & 0x7F];
169 }
170}
171
172static void GBVideoSoftwareRendererFinishScanline(struct GBVideoRenderer* renderer, int y) {
173 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
174 if (GBRegisterLCDCIsWindow(softwareRenderer->lcdc) && softwareRenderer->wy <= y && softwareRenderer->wx - 7 < GB_VIDEO_HORIZONTAL_PIXELS) {
175 ++softwareRenderer->currentWy;
176 }
177}
178
179static void GBVideoSoftwareRendererFinishFrame(struct GBVideoRenderer* renderer) {
180 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
181
182 if (softwareRenderer->temporaryBuffer) {
183 mappedMemoryFree(softwareRenderer->temporaryBuffer, GB_VIDEO_HORIZONTAL_PIXELS * GB_VIDEO_VERTICAL_PIXELS * 4);
184 softwareRenderer->temporaryBuffer = 0;
185 }
186 softwareRenderer->currentWy = 0;
187}
188
189static void GBVideoSoftwareRendererDrawBackground(struct GBVideoSoftwareRenderer* renderer, uint8_t* maps, int startX, int endX, int sx, int sy) {
190 uint8_t* data = renderer->d.vram;
191 uint8_t* attr = &maps[GB_SIZE_VRAM_BANK0];
192 if (!GBRegisterLCDCIsTileData(renderer->lcdc)) {
193 data += 0x1000;
194 }
195 int topY = ((sy >> 3) & 0x1F) * 0x20;
196 int bottomY = sy & 7;
197 if (startX < 0) {
198 startX = 0;
199 }
200 int x;
201 if ((startX + sx) & 7) {
202 int startX2 = startX + 8 - ((startX + sx) & 7);
203 for (x = startX; x < startX2; ++x) {
204 uint8_t* localData = data;
205 int localY = bottomY;
206 int topX = ((x + sx) >> 3) & 0x1F;
207 int bottomX = 7 - ((x + sx) & 7);
208 int bgTile;
209 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
210 bgTile = maps[topX + topY];
211 } else {
212 bgTile = ((int8_t*) maps)[topX + topY];
213 }
214 int p = 0;
215 if (renderer->model >= GB_MODEL_CGB) {
216 GBObjAttributes attrs = attr[topX + topY];
217 p = GBObjAttributesGetCGBPalette(attrs) * 4;
218 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
219 p |= 0x80;
220 }
221 if (GBObjAttributesIsBank(attrs)) {
222 localData += GB_SIZE_VRAM_BANK0;
223 }
224 if (GBObjAttributesIsYFlip(attrs)) {
225 localY = 7 - bottomY;
226 }
227 if (GBObjAttributesIsXFlip(attrs)) {
228 bottomX = 7 - bottomX;
229 }
230 }
231 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
232 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
233 tileDataUpper >>= bottomX;
234 tileDataLower >>= bottomX;
235 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
236 }
237 startX = startX2;
238 }
239 for (x = startX; x < endX; x += 8) {
240 uint8_t* localData = data;
241 int localY = bottomY;
242 int topX = ((x + sx) >> 3) & 0x1F;
243 int bgTile;
244 if (GBRegisterLCDCIsTileData(renderer->lcdc)) {
245 bgTile = maps[topX + topY];
246 } else {
247 bgTile = ((int8_t*) maps)[topX + topY];
248 }
249 int p = 0;
250 if (renderer->model >= GB_MODEL_CGB) {
251 GBObjAttributes attrs = attr[topX + topY];
252 p = GBObjAttributesGetCGBPalette(attrs) * 4;
253 if (GBObjAttributesIsPriority(attrs) && GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
254 p |= 0x80;
255 }
256 if (GBObjAttributesIsBank(attrs)) {
257 localData += GB_SIZE_VRAM_BANK0;
258 }
259 if (GBObjAttributesIsYFlip(attrs)) {
260 localY = 7 - bottomY;
261 }
262 if (GBObjAttributesIsXFlip(attrs)) {
263 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
264 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
265 renderer->row[x + 0] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
266 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
267 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
268 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
269 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
270 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
271 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
272 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
273 continue;
274 }
275 }
276 uint8_t tileDataLower = localData[(bgTile * 8 + localY) * 2];
277 uint8_t tileDataUpper = localData[(bgTile * 8 + localY) * 2 + 1];
278 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
279 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
280 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
281 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
282 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
283 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
284 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
285 renderer->row[x + 0] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
286 }
287}
288
289static void GBVideoSoftwareRendererDrawObj(struct GBVideoSoftwareRenderer* renderer, struct GBObj* obj, int startX, int endX, int y) {
290 int ix = obj->x - 8;
291 if (endX < ix || startX >= ix + 8) {
292 return;
293 }
294 if (obj->x < endX) {
295 endX = obj->x;
296 }
297 if (obj->x - 8 > startX) {
298 startX = obj->x - 8;
299 }
300 if (startX < 0) {
301 startX = 0;
302 }
303 uint8_t* data = renderer->d.vram;
304 int tileOffset = 0;
305 int bottomY;
306 if (GBObjAttributesIsYFlip(obj->attr)) {
307 bottomY = 7 - ((y - obj->y - 16) & 7);
308 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - obj->y < -8) {
309 ++tileOffset;
310 }
311 } else {
312 bottomY = (y - obj->y - 16) & 7;
313 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && y - obj->y >= -8) {
314 ++tileOffset;
315 }
316 }
317 if (GBRegisterLCDCIsObjSize(renderer->lcdc) && obj->tile & 1) {
318 --tileOffset;
319 }
320 uint8_t mask = GBObjAttributesIsPriority(obj->attr) ? 0x63 : 0x60;
321 uint8_t mask2 = GBObjAttributesIsPriority(obj->attr) ? 0 : 0x83;
322 int p;
323 if (renderer->model >= GB_MODEL_CGB) {
324 p = (GBObjAttributesGetCGBPalette(obj->attr) + 8) * 4;
325 if (GBObjAttributesIsBank(obj->attr)) {
326 data += GB_SIZE_VRAM_BANK0;
327 }
328 if (!GBRegisterLCDCIsBgEnable(renderer->lcdc)) {
329 mask = 0x60;
330 mask2 = 0x83;
331 }
332 } else {
333 p = (GBObjAttributesGetPalette(obj->attr) + 8) * 4;
334 }
335 int bottomX;
336 int x = startX;
337 if ((x - obj->x) & 7) {
338 for (; x < endX; ++x) {
339 if (GBObjAttributesIsXFlip(obj->attr)) {
340 bottomX = (x - obj->x) & 7;
341 } else {
342 bottomX = 7 - ((x - obj->x) & 7);
343 }
344 int objTile = obj->tile + tileOffset;
345 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
346 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
347 tileDataUpper >>= bottomX;
348 tileDataLower >>= bottomX;
349 color_t current = renderer->row[x];
350 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
351 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
352 }
353 }
354 } else if (GBObjAttributesIsXFlip(obj->attr)) {
355 int objTile = obj->tile + tileOffset;
356 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
357 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
358 color_t current;
359 current = renderer->row[x];
360 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
361 renderer->row[x] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
362 }
363 current = renderer->row[x + 1];
364 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
365 renderer->row[x + 1] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
366 }
367 current = renderer->row[x + 2];
368 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
369 renderer->row[x + 2] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
370 }
371 current = renderer->row[x + 3];
372 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
373 renderer->row[x + 3] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
374 }
375 current = renderer->row[x + 4];
376 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
377 renderer->row[x + 4] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
378 }
379 current = renderer->row[x + 5];
380 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
381 renderer->row[x + 5] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
382 }
383 current = renderer->row[x + 6];
384 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
385 renderer->row[x + 6] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
386 }
387 current = renderer->row[x + 7];
388 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
389 renderer->row[x + 7] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
390 }
391 } else {
392 int objTile = obj->tile + tileOffset;
393 uint8_t tileDataLower = data[(objTile * 8 + bottomY) * 2];
394 uint8_t tileDataUpper = data[(objTile * 8 + bottomY) * 2 + 1];
395 color_t current;
396 current = renderer->row[x + 7];
397 if (((tileDataUpper | tileDataLower) & 1) && !(current & mask) && (current & mask2) <= 0x80) {
398 renderer->row[x + 7] = p | ((tileDataUpper & 1) << 1) | (tileDataLower & 1);
399 }
400 current = renderer->row[x + 6];
401 if (((tileDataUpper | tileDataLower) & 2) && !(current & mask) && (current & mask2) <= 0x80) {
402 renderer->row[x + 6] = p | (tileDataUpper & 2) | ((tileDataLower & 2) >> 1);
403 }
404 current = renderer->row[x + 5];
405 if (((tileDataUpper | tileDataLower) & 4) && !(current & mask) && (current & mask2) <= 0x80) {
406 renderer->row[x + 5] = p | ((tileDataUpper & 4) >> 1) | ((tileDataLower & 4) >> 2);
407 }
408 current = renderer->row[x + 4];
409 if (((tileDataUpper | tileDataLower) & 8) && !(current & mask) && (current & mask2) <= 0x80) {
410 renderer->row[x + 4] = p | ((tileDataUpper & 8) >> 2) | ((tileDataLower & 8) >> 3);
411 }
412 current = renderer->row[x + 3];
413 if (((tileDataUpper | tileDataLower) & 16) && !(current & mask) && (current & mask2) <= 0x80) {
414 renderer->row[x + 3] = p | ((tileDataUpper & 16) >> 3) | ((tileDataLower & 16) >> 4);
415 }
416 current = renderer->row[x + 2];
417 if (((tileDataUpper | tileDataLower) & 32) && !(current & mask) && (current & mask2) <= 0x80) {
418 renderer->row[x + 2] = p | ((tileDataUpper & 32) >> 4) | ((tileDataLower & 32) >> 5);
419 }
420 current = renderer->row[x + 1];
421 if (((tileDataUpper | tileDataLower) & 64) && !(current & mask) && (current & mask2) <= 0x80) {
422 renderer->row[x + 1] = p | ((tileDataUpper & 64) >> 5) | ((tileDataLower & 64) >> 6);
423 }
424 current = renderer->row[x];
425 if (((tileDataUpper | tileDataLower) & 128) && !(current & mask) && (current & mask2) <= 0x80) {
426 renderer->row[x] = p | ((tileDataUpper & 128) >> 6) | ((tileDataLower & 128) >> 7);
427 }
428 }
429}
430
431static void GBVideoSoftwareRendererGetPixels(struct GBVideoRenderer* renderer, size_t* stride, const void** pixels) {
432 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
433 // TODO: Share with GBAVideoSoftwareRendererGetPixels
434#ifdef COLOR_16_BIT
435 *stride = GB_VIDEO_HORIZONTAL_PIXELS;
436 if (!softwareRenderer->temporaryBuffer) {
437 softwareRenderer->temporaryBuffer = anonymousMemoryMap(GB_VIDEO_HORIZONTAL_PIXELS * GB_VIDEO_VERTICAL_PIXELS * 4);
438 }
439 *pixels = softwareRenderer->temporaryBuffer;
440 unsigned y, x;
441 for (y = 0; y < GB_VIDEO_VERTICAL_PIXELS; ++y) {
442 for (x = 0; x < GB_VIDEO_HORIZONTAL_PIXELS; ++x) {
443 color_t inColor = softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y + x];
444 uint32_t outColor;
445#ifdef COLOR_5_6_5
446 outColor = (inColor & 0x1F) << 19;
447 outColor |= (inColor & 0x7C0) << 5;
448 outColor |= (inColor & 0xF800) >> 8;
449#else
450 outColor = (inColor & 0x1F) << 3;
451 outColor |= (inColor & 0x3E0) << 6;
452 outColor |= (inColor & 0x7C00) << 9;
453#endif
454 softwareRenderer->temporaryBuffer[GB_VIDEO_HORIZONTAL_PIXELS * y + x] = outColor;
455 }
456 }
457#else
458 *stride = softwareRenderer->outputBufferStride;
459 *pixels = softwareRenderer->outputBuffer;
460#endif
461}
462
463
464static void GBVideoSoftwareRendererPutPixels(struct GBVideoRenderer* renderer, size_t stride, const void* pixels) {
465 struct GBVideoSoftwareRenderer* softwareRenderer = (struct GBVideoSoftwareRenderer*) renderer;
466 // TODO: Share with GBAVideoSoftwareRendererGetPixels
467
468 const color_t* colorPixels = pixels;
469 unsigned i;
470 for (i = 0; i < GB_VIDEO_VERTICAL_PIXELS; ++i) {
471 memmove(&softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * i], &colorPixels[stride * i], GB_VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL);
472 }
473}