src/gba/renderers/video-software.c (view raw)
1#include "video-software.h"
2
3#include "gba.h"
4#include "gba-io.h"
5
6static const int _objSizes[32] = {
7 8, 8,
8 16, 16,
9 32, 32,
10 64, 64,
11 16, 8,
12 32, 8,
13 32, 16,
14 64, 32,
15 8, 16,
16 8, 32,
17 16, 32,
18 32, 64,
19 0, 0,
20 0, 0,
21 0, 0,
22 0, 0
23};
24
25static void GBAVideoSoftwareRendererInit(struct GBAVideoRenderer* renderer);
26static void GBAVideoSoftwareRendererDeinit(struct GBAVideoRenderer* renderer);
27static void GBAVideoSoftwareRendererWriteOAM(struct GBAVideoRenderer* renderer, uint32_t oam);
28static void GBAVideoSoftwareRendererWritePalette(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
29static uint16_t GBAVideoSoftwareRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
30static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* renderer, int y);
31static void GBAVideoSoftwareRendererFinishFrame(struct GBAVideoRenderer* renderer);
32static void GBAVideoSoftwareRendererGetPixels(struct GBAVideoRenderer* renderer, unsigned* stride, void** pixels);
33static void GBAVideoSoftwareRendererPutPixels(struct GBAVideoRenderer* renderer, unsigned stride, void* pixels);
34
35static void GBAVideoSoftwareRendererUpdateDISPCNT(struct GBAVideoSoftwareRenderer* renderer);
36static void GBAVideoSoftwareRendererWriteBGCNT(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* bg, uint16_t value);
37static void GBAVideoSoftwareRendererWriteBGPA(struct GBAVideoSoftwareBackground* bg, uint16_t value);
38static void GBAVideoSoftwareRendererWriteBGPB(struct GBAVideoSoftwareBackground* bg, uint16_t value);
39static void GBAVideoSoftwareRendererWriteBGPC(struct GBAVideoSoftwareBackground* bg, uint16_t value);
40static void GBAVideoSoftwareRendererWriteBGPD(struct GBAVideoSoftwareBackground* bg, uint16_t value);
41static void GBAVideoSoftwareRendererWriteBGX_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value);
42static void GBAVideoSoftwareRendererWriteBGX_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value);
43static void GBAVideoSoftwareRendererWriteBGY_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value);
44static void GBAVideoSoftwareRendererWriteBGY_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value);
45static void GBAVideoSoftwareRendererWriteBLDCNT(struct GBAVideoSoftwareRenderer* renderer, uint16_t value);
46
47static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y);
48static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
49static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
50static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
51static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
52static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y);
53static void _cleanOAM(struct GBAVideoSoftwareRenderer* renderer);
54static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y);
55static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y);
56static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority);
57
58static void _updatePalettes(struct GBAVideoSoftwareRenderer* renderer);
59static inline unsigned _brighten(unsigned color, int y);
60static inline unsigned _darken(unsigned color, int y);
61static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB);
62
63void GBAVideoSoftwareRendererCreate(struct GBAVideoSoftwareRenderer* renderer) {
64 renderer->d.init = GBAVideoSoftwareRendererInit;
65 renderer->d.reset = GBAVideoSoftwareRendererInit;
66 renderer->d.deinit = GBAVideoSoftwareRendererDeinit;
67 renderer->d.writeVideoRegister = GBAVideoSoftwareRendererWriteVideoRegister;
68 renderer->d.writeOAM = GBAVideoSoftwareRendererWriteOAM;
69 renderer->d.writePalette = GBAVideoSoftwareRendererWritePalette;
70 renderer->d.drawScanline = GBAVideoSoftwareRendererDrawScanline;
71 renderer->d.finishFrame = GBAVideoSoftwareRendererFinishFrame;
72 renderer->d.getPixels = GBAVideoSoftwareRendererGetPixels;
73 renderer->d.putPixels = GBAVideoSoftwareRendererPutPixels;
74}
75
76static void GBAVideoSoftwareRendererInit(struct GBAVideoRenderer* renderer) {
77 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
78 int i;
79
80 softwareRenderer->dispcnt.packed = 0x0080;
81
82 softwareRenderer->target1Obj = 0;
83 softwareRenderer->target1Bd = 0;
84 softwareRenderer->target2Obj = 0;
85 softwareRenderer->target2Bd = 0;
86 softwareRenderer->blendEffect = BLEND_NONE;
87 memset(softwareRenderer->normalPalette, 0, sizeof(softwareRenderer->normalPalette));
88 memset(softwareRenderer->variantPalette, 0, sizeof(softwareRenderer->variantPalette));
89
90 softwareRenderer->blda = 0;
91 softwareRenderer->bldb = 0;
92 softwareRenderer->bldy = 0;
93
94 softwareRenderer->winN[0].h.packed = 0;
95 softwareRenderer->winN[0].v.packed = 0;
96 softwareRenderer->winN[0].control.packed = 0;
97 softwareRenderer->winN[0].control.priority = 0;
98 softwareRenderer->winN[1].h.packed = 0;
99 softwareRenderer->winN[1].v.packed = 0;
100 softwareRenderer->winN[1].control.packed = 0;
101 softwareRenderer->winN[1].control.priority = 1;
102 softwareRenderer->objwin.packed = 0;
103 softwareRenderer->objwin.priority = 2;
104 softwareRenderer->winout.packed = 0;
105 softwareRenderer->winout.priority = 3;
106 softwareRenderer->oamMax = 0;
107
108 softwareRenderer->mosaic.packed = 0;
109
110 for (i = 0; i < 4; ++i) {
111 struct GBAVideoSoftwareBackground* bg = &softwareRenderer->bg[i];
112 bg->index = i;
113 bg->enabled = 0;
114 bg->priority = 0;
115 bg->charBase = 0;
116 bg->mosaic = 0;
117 bg->multipalette = 0;
118 bg->screenBase = 0;
119 bg->overflow = 0;
120 bg->size = 0;
121 bg->target1 = 0;
122 bg->target2 = 0;
123 bg->x = 0;
124 bg->y = 0;
125 bg->refx = 0;
126 bg->refy = 0;
127 bg->dx = 256;
128 bg->dmx = 0;
129 bg->dy = 0;
130 bg->dmy = 256;
131 bg->sx = 0;
132 bg->sy = 0;
133 }
134}
135
136static void GBAVideoSoftwareRendererDeinit(struct GBAVideoRenderer* renderer) {
137 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
138 UNUSED(softwareRenderer);
139}
140
141static uint16_t GBAVideoSoftwareRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
142 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
143 switch (address) {
144 case REG_DISPCNT:
145 softwareRenderer->dispcnt.packed = value;
146 GBAVideoSoftwareRendererUpdateDISPCNT(softwareRenderer);
147 break;
148 case REG_BG0CNT:
149 value &= 0xFFCF;
150 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[0], value);
151 break;
152 case REG_BG1CNT:
153 value &= 0xFFCF;
154 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[1], value);
155 break;
156 case REG_BG2CNT:
157 value &= 0xFFCF;
158 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[2], value);
159 break;
160 case REG_BG3CNT:
161 value &= 0xFFCF;
162 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[3], value);
163 break;
164 case REG_BG0HOFS:
165 value &= 0x01FF;
166 softwareRenderer->bg[0].x = value;
167 break;
168 case REG_BG0VOFS:
169 value &= 0x01FF;
170 softwareRenderer->bg[0].y = value;
171 break;
172 case REG_BG1HOFS:
173 value &= 0x01FF;
174 softwareRenderer->bg[1].x = value;
175 break;
176 case REG_BG1VOFS:
177 value &= 0x01FF;
178 softwareRenderer->bg[1].y = value;
179 break;
180 case REG_BG2HOFS:
181 value &= 0x01FF;
182 softwareRenderer->bg[2].x = value;
183 break;
184 case REG_BG2VOFS:
185 value &= 0x01FF;
186 softwareRenderer->bg[2].y = value;
187 break;
188 case REG_BG3HOFS:
189 value &= 0x01FF;
190 softwareRenderer->bg[3].x = value;
191 break;
192 case REG_BG3VOFS:
193 value &= 0x01FF;
194 softwareRenderer->bg[3].y = value;
195 break;
196 case REG_BG2PA:
197 GBAVideoSoftwareRendererWriteBGPA(&softwareRenderer->bg[2], value);
198 break;
199 case REG_BG2PB:
200 GBAVideoSoftwareRendererWriteBGPB(&softwareRenderer->bg[2], value);
201 break;
202 case REG_BG2PC:
203 GBAVideoSoftwareRendererWriteBGPC(&softwareRenderer->bg[2], value);
204 break;
205 case REG_BG2PD:
206 GBAVideoSoftwareRendererWriteBGPD(&softwareRenderer->bg[2], value);
207 break;
208 case REG_BG2X_LO:
209 GBAVideoSoftwareRendererWriteBGX_LO(&softwareRenderer->bg[2], value);
210 break;
211 case REG_BG2X_HI:
212 GBAVideoSoftwareRendererWriteBGX_HI(&softwareRenderer->bg[2], value);
213 break;
214 case REG_BG2Y_LO:
215 GBAVideoSoftwareRendererWriteBGY_LO(&softwareRenderer->bg[2], value);
216 break;
217 case REG_BG2Y_HI:
218 GBAVideoSoftwareRendererWriteBGY_HI(&softwareRenderer->bg[2], value);
219 break;
220 case REG_BG3PA:
221 GBAVideoSoftwareRendererWriteBGPA(&softwareRenderer->bg[3], value);
222 break;
223 case REG_BG3PB:
224 GBAVideoSoftwareRendererWriteBGPB(&softwareRenderer->bg[3], value);
225 break;
226 case REG_BG3PC:
227 GBAVideoSoftwareRendererWriteBGPC(&softwareRenderer->bg[3], value);
228 break;
229 case REG_BG3PD:
230 GBAVideoSoftwareRendererWriteBGPD(&softwareRenderer->bg[3], value);
231 break;
232 case REG_BG3X_LO:
233 GBAVideoSoftwareRendererWriteBGX_LO(&softwareRenderer->bg[3], value);
234 break;
235 case REG_BG3X_HI:
236 GBAVideoSoftwareRendererWriteBGX_HI(&softwareRenderer->bg[3], value);
237 break;
238 case REG_BG3Y_LO:
239 GBAVideoSoftwareRendererWriteBGY_LO(&softwareRenderer->bg[3], value);
240 break;
241 case REG_BG3Y_HI:
242 GBAVideoSoftwareRendererWriteBGY_HI(&softwareRenderer->bg[3], value);
243 break;
244 case REG_BLDCNT:
245 GBAVideoSoftwareRendererWriteBLDCNT(softwareRenderer, value);
246 break;
247 case REG_BLDALPHA:
248 softwareRenderer->blda = value & 0x1F;
249 if (softwareRenderer->blda > 0x10) {
250 softwareRenderer->blda = 0x10;
251 }
252 softwareRenderer->bldb = (value >> 8) & 0x1F;
253 if (softwareRenderer->bldb > 0x10) {
254 softwareRenderer->bldb = 0x10;
255 }
256 break;
257 case REG_BLDY:
258 softwareRenderer->bldy = value & 0x1F;
259 if (softwareRenderer->bldy > 0x10) {
260 softwareRenderer->bldy = 0x10;
261 }
262 _updatePalettes(softwareRenderer);
263 break;
264 case REG_WIN0H:
265 softwareRenderer->winN[0].h.packed = value;
266 if (softwareRenderer->winN[0].h.start > VIDEO_HORIZONTAL_PIXELS && softwareRenderer->winN[0].h.start > softwareRenderer->winN[0].h.end) {
267 softwareRenderer->winN[0].h.start = 0;
268 }
269 if (softwareRenderer->winN[0].h.start > softwareRenderer->winN[0].h.end || softwareRenderer->winN[0].h.end > VIDEO_HORIZONTAL_PIXELS) {
270 softwareRenderer->winN[0].h.end = VIDEO_HORIZONTAL_PIXELS;
271 }
272 break;
273 case REG_WIN1H:
274 softwareRenderer->winN[1].h.packed = value;
275 if (softwareRenderer->winN[1].h.start > VIDEO_HORIZONTAL_PIXELS && softwareRenderer->winN[1].h.start > softwareRenderer->winN[1].h.end) {
276 softwareRenderer->winN[1].h.start = 0;
277 }
278 if (softwareRenderer->winN[1].h.start > softwareRenderer->winN[1].h.end || softwareRenderer->winN[1].h.end > VIDEO_HORIZONTAL_PIXELS) {
279 softwareRenderer->winN[1].h.end = VIDEO_HORIZONTAL_PIXELS;
280 }
281 break;
282 case REG_WIN0V:
283 softwareRenderer->winN[0].v.packed = value;
284 if (softwareRenderer->winN[0].v.start > VIDEO_VERTICAL_PIXELS && softwareRenderer->winN[0].v.start > softwareRenderer->winN[0].v.end) {
285 softwareRenderer->winN[0].v.start = 0;
286 }
287 if (softwareRenderer->winN[0].v.start > softwareRenderer->winN[0].v.end || softwareRenderer->winN[0].v.end > VIDEO_HORIZONTAL_PIXELS) {
288 softwareRenderer->winN[0].v.end = VIDEO_VERTICAL_PIXELS;
289 }
290 break;
291 case REG_WIN1V:
292 softwareRenderer->winN[1].v.packed = value;
293 if (softwareRenderer->winN[1].v.start > VIDEO_VERTICAL_PIXELS && softwareRenderer->winN[1].v.start > softwareRenderer->winN[1].v.end) {
294 softwareRenderer->winN[1].v.start = 0;
295 }
296 if (softwareRenderer->winN[1].v.start > softwareRenderer->winN[1].v.end || softwareRenderer->winN[1].v.end > VIDEO_HORIZONTAL_PIXELS) {
297 softwareRenderer->winN[1].v.end = VIDEO_VERTICAL_PIXELS;
298 }
299 break;
300 case REG_WININ:
301 softwareRenderer->winN[0].control.packed = value;
302 softwareRenderer->winN[1].control.packed = value >> 8;
303 break;
304 case REG_WINOUT:
305 softwareRenderer->winout.packed = value;
306 softwareRenderer->objwin.packed = value >> 8;
307 break;
308 case REG_MOSAIC:
309 softwareRenderer->mosaic.packed = value;
310 break;
311 case REG_GREENSWP:
312 GBALog(0, GBA_LOG_STUB, "Stub video register write: 0x%03X", address);
313 break;
314 default:
315 GBALog(0, GBA_LOG_GAME_ERROR, "Invalid video register: 0x%03X", address);
316 }
317 return value;
318}
319
320static void GBAVideoSoftwareRendererWriteOAM(struct GBAVideoRenderer* renderer, uint32_t oam) {
321 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
322 softwareRenderer->oamDirty = 1;
323 UNUSED(oam);
324}
325
326static void GBAVideoSoftwareRendererWritePalette(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
327 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
328#ifdef COLOR_16_BIT
329#ifdef COLOR_5_6_5
330 unsigned color = 0;
331 color |= (value & 0x001F) << 11;
332 color |= (value & 0x03E0) << 1;
333 color |= (value & 0x7C00) >> 10;
334#else
335 unsigned color = value;
336#endif
337#else
338 unsigned color = 0;
339 color |= (value << 3) & 0xF8;
340 color |= (value << 6) & 0xF800;
341 color |= (value << 9) & 0xF80000;
342#endif
343 softwareRenderer->normalPalette[address >> 1] = color;
344 if (softwareRenderer->blendEffect == BLEND_BRIGHTEN) {
345 softwareRenderer->variantPalette[address >> 1] = _brighten(color, softwareRenderer->bldy);
346 } else if (softwareRenderer->blendEffect == BLEND_DARKEN) {
347 softwareRenderer->variantPalette[address >> 1] = _darken(color, softwareRenderer->bldy);
348 }
349}
350
351static void _breakWindow(struct GBAVideoSoftwareRenderer* softwareRenderer, struct WindowN* win) {
352 int activeWindow;
353 int startX = 0;
354 if (win->h.end > 0) {
355 for (activeWindow = 0; activeWindow < softwareRenderer->nWindows; ++activeWindow) {
356 if (win->h.start < softwareRenderer->windows[activeWindow].endX) {
357 // Insert a window before the end of the active window
358 struct Window oldWindow = softwareRenderer->windows[activeWindow];
359 if (win->h.start > startX) {
360 // And after the start of the active window
361 int nextWindow = softwareRenderer->nWindows;
362 ++softwareRenderer->nWindows;
363 for (; nextWindow > activeWindow; --nextWindow) {
364 softwareRenderer->windows[nextWindow] = softwareRenderer->windows[nextWindow - 1];
365 }
366 softwareRenderer->windows[activeWindow].endX = win->h.start;
367 ++activeWindow;
368 }
369 softwareRenderer->windows[activeWindow].control = win->control;
370 softwareRenderer->windows[activeWindow].endX = win->h.end;
371 if (win->h.end >= oldWindow.endX) {
372 // Trim off extra windows we've overwritten
373 for (++activeWindow; win->h.end >= softwareRenderer->windows[activeWindow].endX && softwareRenderer->nWindows > activeWindow; ++activeWindow) {
374 softwareRenderer->windows[activeWindow] = softwareRenderer->windows[activeWindow + 1];
375 --softwareRenderer->nWindows;
376 }
377 } else {
378 ++activeWindow;
379 int nextWindow = softwareRenderer->nWindows;
380 ++softwareRenderer->nWindows;
381 for (; nextWindow > activeWindow; --nextWindow) {
382 softwareRenderer->windows[nextWindow] = softwareRenderer->windows[nextWindow - 1];
383 }
384 softwareRenderer->windows[activeWindow] = oldWindow;
385 }
386 break;
387 }
388 startX = softwareRenderer->windows[activeWindow].endX;
389 }
390 }
391}
392
393static void _cleanOAM(struct GBAVideoSoftwareRenderer* renderer) {
394 int i;
395 int oamMax = 0;
396 for (i = 0; i < 128; ++i) {
397 struct GBAObj* obj = &renderer->d.oam->obj[i];
398 if (obj->transformed || !obj->disable) {
399 int height = _objSizes[obj->shape * 8 + obj->size * 2 + 1];
400 if (obj->transformed) {
401 height <<= ((struct GBATransformedObj*) obj)->doublesize;
402 }
403 if (obj->y < VIDEO_VERTICAL_PIXELS || obj->y + height >= VIDEO_VERTICAL_TOTAL_PIXELS) {
404 renderer->sprites[oamMax].y = obj->y;
405 renderer->sprites[oamMax].endY = obj->y + height;
406 renderer->sprites[oamMax].obj = *obj;
407 ++oamMax;
408 }
409 }
410 }
411 renderer->oamMax = oamMax;
412 renderer->oamDirty = 0;
413}
414
415
416static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
417 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
418
419 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y];
420 if (softwareRenderer->dispcnt.forcedBlank) {
421 int x;
422 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x) {
423 row[x] = GBA_COLOR_WHITE;
424 }
425 return;
426 }
427
428 int x;
429 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; x += 4) {
430 softwareRenderer->spriteLayer[x] = FLAG_UNWRITTEN;
431 softwareRenderer->spriteLayer[x + 1] = FLAG_UNWRITTEN;
432 softwareRenderer->spriteLayer[x + 2] = FLAG_UNWRITTEN;
433 softwareRenderer->spriteLayer[x + 3] = FLAG_UNWRITTEN;
434 }
435
436 softwareRenderer->windows[0].endX = VIDEO_HORIZONTAL_PIXELS;
437 softwareRenderer->nWindows = 1;
438 if (softwareRenderer->dispcnt.win0Enable || softwareRenderer->dispcnt.win1Enable || softwareRenderer->dispcnt.objwinEnable) {
439 softwareRenderer->windows[0].control = softwareRenderer->winout;
440 if (softwareRenderer->dispcnt.win1Enable && y < softwareRenderer->winN[1].v.end && y >= softwareRenderer->winN[1].v.start) {
441 _breakWindow(softwareRenderer, &softwareRenderer->winN[1]);
442 }
443 if (softwareRenderer->dispcnt.win0Enable && y < softwareRenderer->winN[0].v.end && y >= softwareRenderer->winN[0].v.start) {
444 _breakWindow(softwareRenderer, &softwareRenderer->winN[0]);
445 }
446 } else {
447 softwareRenderer->windows[0].control.packed = 0xFF;
448 }
449
450 int w;
451 x = 0;
452 for (w = 0; w < softwareRenderer->nWindows; ++w) {
453 // TOOD: handle objwin on backdrop
454 uint32_t backdrop = FLAG_UNWRITTEN | FLAG_PRIORITY | FLAG_IS_BACKGROUND;
455 if (!softwareRenderer->target1Bd || softwareRenderer->blendEffect == BLEND_NONE || softwareRenderer->blendEffect == BLEND_ALPHA || !softwareRenderer->windows[w].control.blendEnable) {
456 backdrop |= softwareRenderer->normalPalette[0];
457 } else {
458 backdrop |= softwareRenderer->variantPalette[0];
459 }
460 int end = softwareRenderer->windows[w].endX;
461 for (; x < end; ++x) {
462 softwareRenderer->row[x] = backdrop;
463 }
464 }
465
466 _drawScanline(softwareRenderer, y);
467
468 if (softwareRenderer->target2Bd) {
469 x = 0;
470 for (w = 0; w < softwareRenderer->nWindows; ++w) {
471 uint32_t backdrop = FLAG_UNWRITTEN;
472 if (!softwareRenderer->target1Bd || softwareRenderer->blendEffect == BLEND_NONE || softwareRenderer->blendEffect == BLEND_ALPHA || !softwareRenderer->windows[w].control.blendEnable) {
473 backdrop |= softwareRenderer->normalPalette[0];
474 } else {
475 backdrop |= softwareRenderer->variantPalette[0];
476 }
477 int end = softwareRenderer->windows[w].endX;
478 for (; x < end; ++x) {
479 uint32_t color = softwareRenderer->row[x];
480 if (color & FLAG_TARGET_1) {
481 softwareRenderer->row[x] = _mix(softwareRenderer->bldb, backdrop, softwareRenderer->blda, color);
482 }
483 }
484 }
485 }
486
487#ifdef COLOR_16_BIT
488#ifdef __arm__
489 _to16Bit(row, softwareRenderer->row, VIDEO_HORIZONTAL_PIXELS);
490#else
491 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x) {
492 row[x] = softwareRenderer->row[x];
493 }
494#endif
495#else
496 memcpy(row, softwareRenderer->row, VIDEO_HORIZONTAL_PIXELS * sizeof(*row));
497#endif
498}
499
500static void GBAVideoSoftwareRendererFinishFrame(struct GBAVideoRenderer* renderer) {
501 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
502
503 softwareRenderer->bg[2].sx = softwareRenderer->bg[2].refx;
504 softwareRenderer->bg[2].sy = softwareRenderer->bg[2].refy;
505 softwareRenderer->bg[3].sx = softwareRenderer->bg[3].refx;
506 softwareRenderer->bg[3].sy = softwareRenderer->bg[3].refy;
507}
508
509static void GBAVideoSoftwareRendererGetPixels(struct GBAVideoRenderer* renderer, unsigned* stride, void** pixels) {
510 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
511
512 *stride = softwareRenderer->outputBufferStride;
513 *pixels = softwareRenderer->outputBuffer;
514}
515
516static void GBAVideoSoftwareRendererPutPixels(struct GBAVideoRenderer* renderer, unsigned stride, void* pixels) {
517 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
518
519 uint32_t* colorPixels = pixels;
520 unsigned i;
521 for (i = 0; i < VIDEO_VERTICAL_PIXELS; ++i) {
522 memmove(&softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * i], &colorPixels[stride * i], VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL);
523 }
524}
525
526static void GBAVideoSoftwareRendererUpdateDISPCNT(struct GBAVideoSoftwareRenderer* renderer) {
527 renderer->bg[0].enabled = renderer->dispcnt.bg0Enable;
528 renderer->bg[1].enabled = renderer->dispcnt.bg1Enable;
529 renderer->bg[2].enabled = renderer->dispcnt.bg2Enable;
530 renderer->bg[3].enabled = renderer->dispcnt.bg3Enable;
531}
532
533static void GBAVideoSoftwareRendererWriteBGCNT(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* bg, uint16_t value) {
534 UNUSED(renderer);
535 union GBARegisterBGCNT reg = { .packed = value };
536 bg->priority = reg.priority;
537 bg->charBase = reg.charBase << 14;
538 bg->mosaic = reg.mosaic;
539 bg->multipalette = reg.multipalette;
540 bg->screenBase = reg.screenBase << 11;
541 bg->overflow = reg.overflow;
542 bg->size = reg.size;
543}
544
545static void GBAVideoSoftwareRendererWriteBGPA(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
546 bg->dx = value;
547}
548
549static void GBAVideoSoftwareRendererWriteBGPB(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
550 bg->dmx = value;
551}
552
553static void GBAVideoSoftwareRendererWriteBGPC(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
554 bg->dy = value;
555}
556
557static void GBAVideoSoftwareRendererWriteBGPD(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
558 bg->dmy = value;
559}
560
561static void GBAVideoSoftwareRendererWriteBGX_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
562 bg->refx = (bg->refx & 0xFFFF0000) | value;
563 bg->sx = bg->refx;
564}
565
566static void GBAVideoSoftwareRendererWriteBGX_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
567 bg->refx = (bg->refx & 0x0000FFFF) | (value << 16);
568 bg->refx <<= 4;
569 bg->refx >>= 4;
570 bg->sx = bg->refx;
571}
572
573static void GBAVideoSoftwareRendererWriteBGY_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
574 bg->refy = (bg->refy & 0xFFFF0000) | value;
575 bg->sy = bg->refy;
576}
577
578static void GBAVideoSoftwareRendererWriteBGY_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
579 bg->refy = (bg->refy & 0x0000FFFF) | (value << 16);
580 bg->refy <<= 4;
581 bg->refy >>= 4;
582 bg->sy = bg->refy;
583}
584
585static void GBAVideoSoftwareRendererWriteBLDCNT(struct GBAVideoSoftwareRenderer* renderer, uint16_t value) {
586 union {
587 struct {
588 unsigned target1Bg0 : 1;
589 unsigned target1Bg1 : 1;
590 unsigned target1Bg2 : 1;
591 unsigned target1Bg3 : 1;
592 unsigned target1Obj : 1;
593 unsigned target1Bd : 1;
594 enum BlendEffect effect : 2;
595 unsigned target2Bg0 : 1;
596 unsigned target2Bg1 : 1;
597 unsigned target2Bg2 : 1;
598 unsigned target2Bg3 : 1;
599 unsigned target2Obj : 1;
600 unsigned target2Bd : 1;
601 };
602 uint16_t packed;
603 } bldcnt = { .packed = value };
604
605 enum BlendEffect oldEffect = renderer->blendEffect;
606
607 renderer->bg[0].target1 = bldcnt.target1Bg0;
608 renderer->bg[1].target1 = bldcnt.target1Bg1;
609 renderer->bg[2].target1 = bldcnt.target1Bg2;
610 renderer->bg[3].target1 = bldcnt.target1Bg3;
611 renderer->bg[0].target2 = bldcnt.target2Bg0;
612 renderer->bg[1].target2 = bldcnt.target2Bg1;
613 renderer->bg[2].target2 = bldcnt.target2Bg2;
614 renderer->bg[3].target2 = bldcnt.target2Bg3;
615
616 renderer->blendEffect = bldcnt.effect;
617 renderer->target1Obj = bldcnt.target1Obj;
618 renderer->target1Bd = bldcnt.target1Bd;
619 renderer->target2Obj = bldcnt.target2Obj;
620 renderer->target2Bd = bldcnt.target2Bd;
621
622 renderer->anyTarget2 = bldcnt.packed & 0x3F00;
623
624 if (oldEffect != renderer->blendEffect) {
625 _updatePalettes(renderer);
626 }
627}
628
629#define TEST_LAYER_ENABLED(X) \
630 (renderer->bg[X].enabled && \
631 (renderer->currentWindow.bg ## X ## Enable || \
632 (renderer->dispcnt.objwinEnable && renderer->objwin.bg ## X ## Enable)) && \
633 renderer->bg[X].priority == priority)
634
635static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y) {
636 int w;
637 renderer->end = 0;
638 int spriteLayers = 0;
639 if (renderer->dispcnt.objEnable) {
640 if (renderer->oamDirty) {
641 _cleanOAM(renderer);
642 }
643 int mosaicV = renderer->mosaic.objV + 1;
644 int mosaicY = y - (y % mosaicV);
645 for (w = 0; w < renderer->nWindows; ++w) {
646 renderer->start = renderer->end;
647 renderer->end = renderer->windows[w].endX;
648 renderer->currentWindow = renderer->windows[w].control;
649 if (!renderer->currentWindow.objEnable) {
650 continue;
651 }
652 int i;
653 int drawn;
654 for (i = 0; i < renderer->oamMax; ++i) {
655 int localY = y;
656 struct GBAVideoSoftwareSprite* sprite = &renderer->sprites[i];
657 if (sprite->obj.mosaic) {
658 localY = mosaicY;
659 }
660 if ((localY < sprite->y && (sprite->endY - 256 < 0 || localY >= sprite->endY - 256)) || localY >= sprite->endY) {
661 continue;
662 }
663 if (sprite->obj.transformed) {
664 drawn = _preprocessTransformedSprite(renderer, &sprite->tobj, localY);
665 } else {
666 drawn = _preprocessSprite(renderer, &sprite->obj, localY);
667 }
668 spriteLayers |= drawn << sprite->obj.priority;
669 }
670 }
671 }
672
673 int priority;
674 for (priority = 0; priority < 4; ++priority) {
675 if (spriteLayers & (1 << priority)) {
676 _postprocessSprite(renderer, priority);
677 }
678 renderer->end = 0;
679 for (w = 0; w < renderer->nWindows; ++w) {
680 renderer->start = renderer->end;
681 renderer->end = renderer->windows[w].endX;
682 renderer->currentWindow = renderer->windows[w].control;
683 if (TEST_LAYER_ENABLED(0) && renderer->dispcnt.mode < 2) {
684 _drawBackgroundMode0(renderer, &renderer->bg[0], y);
685 }
686 if (TEST_LAYER_ENABLED(1) && renderer->dispcnt.mode < 2) {
687 _drawBackgroundMode0(renderer, &renderer->bg[1], y);
688 }
689 if (TEST_LAYER_ENABLED(2)) {
690 switch (renderer->dispcnt.mode) {
691 case 0:
692 _drawBackgroundMode0(renderer, &renderer->bg[2], y);
693 break;
694 case 1:
695 case 2:
696 _drawBackgroundMode2(renderer, &renderer->bg[2], y);
697 break;
698 case 3:
699 _drawBackgroundMode3(renderer, &renderer->bg[2], y);
700 break;
701 case 4:
702 _drawBackgroundMode4(renderer, &renderer->bg[2], y);
703 break;
704 case 5:
705 _drawBackgroundMode5(renderer, &renderer->bg[2], y);
706 break;
707 }
708 }
709 if (TEST_LAYER_ENABLED(3)) {
710 switch (renderer->dispcnt.mode) {
711 case 0:
712 _drawBackgroundMode0(renderer, &renderer->bg[3], y);
713 break;
714 case 2:
715 _drawBackgroundMode2(renderer, &renderer->bg[3], y);
716 break;
717 }
718 }
719 }
720 }
721 renderer->bg[2].sx += renderer->bg[2].dmx;
722 renderer->bg[2].sy += renderer->bg[2].dmy;
723 renderer->bg[3].sx += renderer->bg[3].dmx;
724 renderer->bg[3].sy += renderer->bg[3].dmy;
725}
726
727// We stash the priority on the top bits so we can do a one-operator comparison
728// The lower the number, the higher the priority, and sprites take precendence over backgrounds
729// We want to do special processing if the color pixel is target 1, however
730
731static inline void _compositeBlendObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
732 if (color >= current) {
733 if (current & FLAG_TARGET_1 && color & FLAG_TARGET_2) {
734 color = _mix(renderer->blda, current, renderer->bldb, color);
735 } else {
736 color = current & 0x00FFFFFF;
737 }
738 } else {
739 color = (color & ~FLAG_TARGET_2) | (current & FLAG_OBJWIN);
740 }
741 *pixel = color;
742}
743
744static inline void _compositeBlendNoObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
745 // We stash the priority on the top bits so we can do a one-operator comparison
746 // The lower the number, the higher the priority, and sprites take precendence over backgrounds
747 // We want to do special processing if the color pixel is target 1, however
748 if (color >= current) {
749 if (current & FLAG_TARGET_1 && color & FLAG_TARGET_2) {
750 color = _mix(renderer->blda, current, renderer->bldb, color);
751 } else {
752 color = current & 0x00FFFFFF;
753 }
754 } else {
755 color = color & ~FLAG_TARGET_2;
756 }
757 *pixel = color;
758}
759
760static inline void _compositeNoBlendObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
761 UNUSED(renderer);
762 if (color < current) {
763 *pixel = color | (current & FLAG_OBJWIN);
764 }
765}
766
767static inline void _compositeNoBlendNoObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
768 UNUSED(renderer);
769 if (color < current) {
770 *pixel = color;
771 }
772}
773
774#define COMPOSITE_16_OBJWIN(BLEND) \
775 if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) { \
776 unsigned color = (current & FLAG_OBJWIN) ? objwinPalette[paletteData | pixelData] : palette[pixelData]; \
777 _composite ## BLEND ## Objwin(renderer, pixel, color | flags, current); \
778 }
779
780#define COMPOSITE_16_NO_OBJWIN(BLEND) \
781 _composite ## BLEND ## NoObjwin(renderer, pixel, palette[pixelData] | flags, current);
782
783#define COMPOSITE_256_OBJWIN(BLEND) \
784 if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) { \
785 unsigned color = (current & FLAG_OBJWIN) ? objwinPalette[pixelData] : palette[pixelData]; \
786 _composite ## BLEND ## Objwin(renderer, pixel, color | flags, current); \
787 }
788
789#define COMPOSITE_256_NO_OBJWIN(BLEND) \
790 COMPOSITE_16_NO_OBJWIN(BLEND)
791
792#define BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN) \
793 pixelData = tileData & 0xF; \
794 current = *pixel; \
795 if (pixelData && IS_WRITABLE(current)) { \
796 COMPOSITE_16_ ## OBJWIN (BLEND); \
797 } \
798 tileData >>= 4;
799
800#define BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN) \
801 pixelData = tileData & 0xFF; \
802 current = *pixel; \
803 if (pixelData && IS_WRITABLE(current)) { \
804 COMPOSITE_256_ ## OBJWIN (BLEND); \
805 } \
806 tileData >>= 8;
807
808#define BACKGROUND_TEXT_SELECT_CHARACTER \
809 localX = tileX * 8 + inX; \
810 xBase = localX & 0xF8; \
811 if (background->size & 1) { \
812 xBase += (localX & 0x100) << 5; \
813 } \
814 screenBase = yBase + (xBase >> 3); \
815 mapData = vram[screenBase]; \
816 localY = inY & 0x7; \
817 if (GBA_TEXT_MAP_VFLIP(mapData)) { \
818 localY = 7 - localY; \
819 }
820
821#define PREPARE_OBJWIN \
822 int objwinSlowPath = renderer->dispcnt.objwinEnable; \
823 int objwinOnly = 0; \
824 int objwinForceEnable = 0; \
825 color_t* objwinPalette; \
826 if (objwinSlowPath) { \
827 if (background->target1 && renderer->objwin.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN)) { \
828 objwinPalette = renderer->variantPalette; \
829 } else { \
830 objwinPalette = renderer->normalPalette; \
831 } \
832 switch (background->index) { \
833 case 0: \
834 objwinForceEnable = renderer->objwin.bg0Enable && renderer->currentWindow.bg0Enable; \
835 objwinOnly = !renderer->objwin.bg0Enable; \
836 break; \
837 case 1: \
838 objwinForceEnable = renderer->objwin.bg1Enable && renderer->currentWindow.bg1Enable; \
839 objwinOnly = !renderer->objwin.bg1Enable; \
840 break; \
841 case 2: \
842 objwinForceEnable = renderer->objwin.bg2Enable && renderer->currentWindow.bg2Enable; \
843 objwinOnly = !renderer->objwin.bg2Enable; \
844 break; \
845 case 3: \
846 objwinForceEnable = renderer->objwin.bg3Enable && renderer->currentWindow.bg3Enable; \
847 objwinOnly = !renderer->objwin.bg3Enable; \
848 break; \
849 } \
850 }
851
852#define DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_16(BLEND, OBJWIN) \
853 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
854 palette = &mainPalette[paletteData]; \
855 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
856 tileData = ((uint32_t*) vram)[charBase]; \
857 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
858 tileData >>= 4 * mod8; \
859 for (; outX < end; ++outX) { \
860 uint32_t* pixel = &renderer->row[outX]; \
861 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
862 } \
863 } else { \
864 for (outX = end - 1; outX >= renderer->start; --outX) { \
865 uint32_t* pixel = &renderer->row[outX]; \
866 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
867 } \
868 }
869
870#define DRAW_BACKGROUND_MODE_0_TILE_PREFIX_16(BLEND, OBJWIN) \
871 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
872 tileData = ((uint32_t*) vram)[charBase]; \
873 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
874 palette = &mainPalette[paletteData]; \
875 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
876 outX = renderer->end - mod8; \
877 if (outX < renderer->start) { \
878 tileData >>= 4 * (renderer->start - outX); \
879 outX = renderer->start; \
880 } \
881 for (; outX < renderer->end; ++outX) { \
882 uint32_t* pixel = &renderer->row[outX]; \
883 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
884 } \
885 } else { \
886 tileData >>= 4 * (0x8 - mod8); \
887 int end2 = renderer->end - 8; \
888 if (end2 < -1) { \
889 end2 = -1; \
890 } \
891 for (outX = renderer->end - 1; outX > end2; --outX) { \
892 uint32_t* pixel = &renderer->row[outX]; \
893 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
894 } \
895 }
896
897#define DRAW_BACKGROUND_MODE_0_MOSAIC_16(BLEND, OBJWIN) \
898 for (; tileX < tileEnd; ++tileX) { \
899 BACKGROUND_TEXT_SELECT_CHARACTER; \
900 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
901 tileData = carryData; \
902 for (x = 0; x < 8; ++x) { \
903 if (!mosaicWait) { \
904 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
905 palette = &mainPalette[paletteData]; \
906 tileData = ((uint32_t*) vram)[charBase]; \
907 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
908 tileData >>= x * 4; \
909 } else { \
910 tileData >>= (7 - x) * 4; \
911 } \
912 tileData &= 0xF; \
913 tileData |= tileData << 4; \
914 tileData |= tileData << 8; \
915 tileData |= tileData << 12; \
916 tileData |= tileData << 16; \
917 tileData |= tileData << 20; \
918 tileData |= tileData << 24; \
919 tileData |= tileData << 28; \
920 carryData = tileData; \
921 mosaicWait = mosaicH; \
922 } \
923 --mosaicWait; \
924 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
925 ++pixel; \
926 } \
927 }
928
929#define DRAW_BACKGROUND_MODE_0_TILES_16(BLEND, OBJWIN) \
930 for (; tileX < tileEnd; ++tileX) { \
931 BACKGROUND_TEXT_SELECT_CHARACTER; \
932 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
933 palette = &mainPalette[paletteData]; \
934 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
935 tileData = ((uint32_t*) vram)[charBase]; \
936 if (tileData) { \
937 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
938 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
939 ++pixel; \
940 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
941 ++pixel; \
942 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
943 ++pixel; \
944 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
945 ++pixel; \
946 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
947 ++pixel; \
948 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
949 ++pixel; \
950 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
951 ++pixel; \
952 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
953 ++pixel; \
954 } else { \
955 pixel += 7; \
956 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
957 --pixel; \
958 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
959 --pixel; \
960 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
961 --pixel; \
962 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
963 --pixel; \
964 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
965 --pixel; \
966 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
967 --pixel; \
968 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
969 --pixel; \
970 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
971 pixel += 8; \
972 } \
973 } else { \
974 pixel += 8; \
975 } \
976 }
977
978#define DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_256(BLEND, OBJWIN) \
979 /* TODO: hflip */ \
980 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
981 int end2 = end - 4; \
982 int shift = inX & 0x3; \
983 if (end2 > 0) { \
984 tileData = ((uint32_t*) vram)[charBase]; \
985 tileData >>= 8 * shift; \
986 shift = 0; \
987 for (; outX < end2; ++outX) { \
988 uint32_t* pixel = &renderer->row[outX]; \
989 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
990 } \
991 } \
992 \
993 tileData = ((uint32_t*) vram)[charBase + 1]; \
994 tileData >>= 8 * shift; \
995 for (; outX < end; ++outX) { \
996 uint32_t* pixel = &renderer->row[outX]; \
997 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
998 }
999
1000#define DRAW_BACKGROUND_MODE_0_TILE_PREFIX_256(BLEND, OBJWIN) \
1001 /* TODO: hflip */ \
1002 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1003 outX = renderer->end - 8 + end; \
1004 int end2 = 4 - end; \
1005 if (end2 > 0) { \
1006 tileData = ((uint32_t*) vram)[charBase]; \
1007 for (; outX < renderer->end - end2; ++outX) { \
1008 uint32_t* pixel = &renderer->row[outX]; \
1009 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1010 } \
1011 ++charBase; \
1012 } \
1013 \
1014 tileData = ((uint32_t*) vram)[charBase]; \
1015 for (; outX < renderer->end; ++outX) { \
1016 uint32_t* pixel = &renderer->row[outX]; \
1017 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1018 }
1019
1020#define DRAW_BACKGROUND_MODE_0_TILES_256(BLEND, OBJWIN) \
1021 for (; tileX < tileEnd; ++tileX) { \
1022 BACKGROUND_TEXT_SELECT_CHARACTER; \
1023 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1024 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1025 tileData = ((uint32_t*) vram)[charBase]; \
1026 if (tileData) { \
1027 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1028 ++pixel; \
1029 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1030 ++pixel; \
1031 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1032 ++pixel; \
1033 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1034 ++pixel; \
1035 } else { \
1036 pixel += 4; \
1037 } \
1038 tileData = ((uint32_t*) vram)[charBase + 1]; \
1039 if (tileData) { \
1040 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1041 ++pixel; \
1042 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1043 ++pixel; \
1044 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1045 ++pixel; \
1046 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1047 ++pixel; \
1048 } else { \
1049 pixel += 4; \
1050 } \
1051 } else { \
1052 uint32_t tileData = ((uint32_t*) vram)[charBase + 1]; \
1053 if (tileData) { \
1054 pixel += 3; \
1055 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1056 --pixel; \
1057 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1058 --pixel; \
1059 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1060 --pixel; \
1061 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1062 } \
1063 pixel += 4; \
1064 tileData = ((uint32_t*) vram)[charBase]; \
1065 if (tileData) { \
1066 pixel += 3; \
1067 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1068 --pixel; \
1069 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1070 --pixel; \
1071 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1072 --pixel; \
1073 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1074 } \
1075 pixel += 4; \
1076 } \
1077 }
1078
1079#define DRAW_BACKGROUND_MODE_0_MOSAIC_256(BLEND, OBJWIN) \
1080 for (; tileX < tileEnd; ++tileX) { \
1081 BACKGROUND_TEXT_SELECT_CHARACTER; \
1082 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1083 tileData = carryData; \
1084 for (x = 0; x < 8; ++x) { \
1085 if (!mosaicWait) { \
1086 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1087 if (x >= 4) { \
1088 tileData = ((uint32_t*) vram)[charBase + 1]; \
1089 tileData >>= (x - 4) * 8; \
1090 } else { \
1091 tileData = ((uint32_t*) vram)[charBase]; \
1092 tileData >>= x * 8; \
1093 } \
1094 } else { \
1095 if (x >= 4) { \
1096 tileData = ((uint32_t*) vram)[charBase]; \
1097 tileData >>= (7 - x) * 8; \
1098 } else { \
1099 tileData = ((uint32_t*) vram)[charBase + 1]; \
1100 tileData >>= (3 - x) * 8; \
1101 } \
1102 } \
1103 tileData &= 0xFF; \
1104 carryData = tileData; \
1105 mosaicWait = mosaicH; \
1106 } \
1107 tileData |= tileData << 8; \
1108 --mosaicWait; \
1109 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1110 ++pixel; \
1111 } \
1112 }
1113
1114#define DRAW_BACKGROUND_MODE_0(BPP, BLEND, OBJWIN) \
1115 uint32_t* pixel = &renderer->row[outX]; \
1116 if (background->mosaic && renderer->mosaic.bgH) { \
1117 int mosaicH = renderer->mosaic.bgH + 1; \
1118 int x; \
1119 int mosaicWait = outX % mosaicH; \
1120 int carryData = 0; \
1121 paletteData = 0; /* Quiets compiler warning */ \
1122 DRAW_BACKGROUND_MODE_0_MOSAIC_ ## BPP (BLEND, OBJWIN) \
1123 return; \
1124 } \
1125 \
1126 if (inX & 0x7) { \
1127 int mod8 = inX & 0x7; \
1128 BACKGROUND_TEXT_SELECT_CHARACTER; \
1129 \
1130 int end = outX + 0x8 - mod8; \
1131 if (end > renderer->end) { \
1132 /* TODO: ensure tiles are properly aligned from this*/ \
1133 end = renderer->end; \
1134 } \
1135 if (end == outX) { \
1136 return; \
1137 } \
1138 DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_ ## BPP (BLEND, OBJWIN) \
1139 } \
1140 if (inX & 0x7 || (renderer->end - renderer->start) & 0x7) { \
1141 tileX = tileEnd; \
1142 int pixelData; \
1143 int mod8 = (inX + renderer->end - renderer->start) & 0x7; \
1144 BACKGROUND_TEXT_SELECT_CHARACTER; \
1145 \
1146 int end = 0x8 - mod8; \
1147 UNUSED(end); \
1148 DRAW_BACKGROUND_MODE_0_TILE_PREFIX_ ## BPP (BLEND, OBJWIN) \
1149 \
1150 tileX = (inX & 0x7) != 0; \
1151 outX = renderer->start + tileX * 8 - (inX & 0x7); \
1152 } \
1153 \
1154 pixel = &renderer->row[outX]; \
1155 DRAW_BACKGROUND_MODE_0_TILES_ ## BPP (BLEND, OBJWIN)
1156
1157static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y) {
1158 int inX = renderer->start + background->x;
1159 if (background->mosaic) {
1160 int mosaicV = renderer->mosaic.bgV + 1;
1161 y -= y % mosaicV;
1162 }
1163 int inY = y + background->y;
1164 uint16_t mapData;
1165
1166 unsigned yBase = inY & 0xF8;
1167 if (background->size == 2) {
1168 yBase += inY & 0x100;
1169 } else if (background->size == 3) {
1170 yBase += (inY & 0x100) << 1;
1171 }
1172 yBase = (background->screenBase >> 1) + (yBase << 2);
1173
1174 int localX;
1175 int localY;
1176
1177 unsigned xBase;
1178
1179 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND;
1180 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA);
1181 flags |= FLAG_TARGET_2 * background->target2;
1182
1183 uint32_t screenBase;
1184 uint32_t charBase;
1185 int variant = background->target1 && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1186 color_t* mainPalette = renderer->normalPalette;
1187 if (variant) {
1188 mainPalette = renderer->variantPalette;
1189 }
1190 color_t* palette = mainPalette;
1191 PREPARE_OBJWIN;
1192
1193 int outX = renderer->start;
1194
1195 uint32_t tileData;
1196 uint32_t current;
1197 int pixelData;
1198 int paletteData;
1199 int tileX = 0;
1200 int tileEnd = (renderer->end - renderer->start + (inX & 0x7)) >> 3;
1201 uint16_t* vram = renderer->d.vram;
1202
1203 if (!objwinSlowPath) {
1204 if (!(flags & FLAG_TARGET_2)) {
1205 if (!background->multipalette) {
1206 DRAW_BACKGROUND_MODE_0(16, NoBlend, NO_OBJWIN);
1207 } else {
1208 DRAW_BACKGROUND_MODE_0(256, NoBlend, NO_OBJWIN);
1209 }
1210 } else {
1211 if (!background->multipalette) {
1212 DRAW_BACKGROUND_MODE_0(16, Blend, NO_OBJWIN);
1213 } else {
1214 DRAW_BACKGROUND_MODE_0(256, Blend, NO_OBJWIN);
1215 }
1216 }
1217 } else {
1218 if (!(flags & FLAG_TARGET_2)) {
1219 if (!background->multipalette) {
1220 DRAW_BACKGROUND_MODE_0(16, NoBlend, OBJWIN);
1221 } else {
1222 DRAW_BACKGROUND_MODE_0(256, NoBlend, OBJWIN);
1223 }
1224 } else {
1225 if (!background->multipalette) {
1226 DRAW_BACKGROUND_MODE_0(16, Blend, OBJWIN);
1227 } else {
1228 DRAW_BACKGROUND_MODE_0(256, Blend, OBJWIN);
1229 }
1230 }
1231 }
1232}
1233
1234#define BACKGROUND_BITMAP_INIT \
1235 UNUSED(unused); \
1236 int32_t x = background->sx + (renderer->start - 1) * background->dx; \
1237 int32_t y = background->sy + (renderer->start - 1) * background->dy; \
1238 int32_t localX; \
1239 int32_t localY; \
1240 \
1241 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND; \
1242 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA); \
1243 flags |= FLAG_TARGET_2 * background->target2; \
1244 int variant = background->target1 && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN); \
1245 color_t* palette = renderer->normalPalette; \
1246 if (variant) { \
1247 palette = renderer->variantPalette; \
1248 } \
1249 PREPARE_OBJWIN;
1250
1251#define BACKGROUND_BITMAP_ITERATE(W, H) \
1252 x += background->dx; \
1253 y += background->dy; \
1254 \
1255 if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
1256 continue; \
1257 } else { \
1258 localX = x; \
1259 localY = y; \
1260 }
1261
1262static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1263 int sizeAdjusted = 0x8000 << background->size;
1264
1265 BACKGROUND_BITMAP_INIT;
1266
1267 uint32_t screenBase = background->screenBase;
1268 uint32_t charBase = background->charBase;
1269 uint8_t mapData;
1270 uint8_t tileData;
1271
1272 int outX;
1273 uint32_t* pixel;
1274 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1275 x += background->dx;
1276 y += background->dy;
1277
1278 if (background->overflow) {
1279 localX = x & (sizeAdjusted - 1);
1280 localY = y & (sizeAdjusted - 1);
1281 } else if ((x | y) & ~(sizeAdjusted - 1)) {
1282 continue;
1283 } else {
1284 localX = x;
1285 localY = y;
1286 }
1287 mapData = ((uint8_t*)renderer->d.vram)[screenBase + (localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)];
1288 tileData = ((uint8_t*)renderer->d.vram)[charBase + (mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)];
1289
1290 uint32_t current = *pixel;
1291 if (tileData && IS_WRITABLE(current)) {
1292 if (!objwinSlowPath) {
1293 _compositeBlendNoObjwin(renderer, pixel, palette[tileData] | flags, current);
1294 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1295 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1296 _compositeBlendObjwin(renderer, pixel, currentPalette[tileData] | flags, current);
1297 }
1298 }
1299 }
1300}
1301
1302static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1303 BACKGROUND_BITMAP_INIT;
1304
1305 uint32_t color;
1306
1307 int outX;
1308 uint32_t* pixel;
1309 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1310 BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
1311
1312 color = ((uint16_t*)renderer->d.vram)[(localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
1313#ifndef COLOR_16_BIT
1314 unsigned color32;
1315 color32 = 0;
1316 color32 |= (color << 3) & 0xF8;
1317 color32 |= (color << 6) & 0xF800;
1318 color32 |= (color << 9) & 0xF80000;
1319 color = color32;
1320#endif
1321
1322 uint32_t current = *pixel;
1323 if (!objwinSlowPath || !(current & FLAG_OBJWIN) != objwinOnly) {
1324 if (!variant) {
1325 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1326 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
1327 _compositeBlendObjwin(renderer, pixel, _brighten(color, renderer->bldy) | flags, current);
1328 } else if (renderer->blendEffect == BLEND_DARKEN) {
1329 _compositeBlendObjwin(renderer, pixel, _darken(color, renderer->bldy) | flags, current);
1330 }
1331 }
1332 }
1333}
1334
1335static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1336 BACKGROUND_BITMAP_INIT;
1337
1338 uint16_t color;
1339 uint32_t offset = 0;
1340 if (renderer->dispcnt.frameSelect) {
1341 offset = 0xA000;
1342 }
1343
1344 int outX;
1345 uint32_t* pixel;
1346 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1347 BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
1348
1349 color = ((uint8_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
1350
1351 uint32_t current = *pixel;
1352 if (color && IS_WRITABLE(current)) {
1353 if (!objwinSlowPath) {
1354 _compositeBlendNoObjwin(renderer, pixel, palette[color] | flags, current);
1355 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1356 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1357 _compositeBlendObjwin(renderer, pixel, currentPalette[color] | flags, current);
1358 }
1359 }
1360 }
1361}
1362
1363static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1364 BACKGROUND_BITMAP_INIT;
1365
1366 uint32_t color;
1367 uint32_t offset = 0;
1368 if (renderer->dispcnt.frameSelect) {
1369 offset = 0xA000;
1370 }
1371
1372 int outX;
1373 uint32_t* pixel;
1374 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1375 BACKGROUND_BITMAP_ITERATE(160, 128);
1376
1377 color = ((uint16_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * 160];
1378#ifndef COLOR_16_BIT
1379 unsigned color32 = 0;
1380 color32 |= (color << 9) & 0xF80000;
1381 color32 |= (color << 3) & 0xF8;
1382 color32 |= (color << 6) & 0xF800;
1383 color = color32;
1384#endif
1385
1386 uint32_t current = *pixel;
1387 if (!objwinSlowPath || !(current & FLAG_OBJWIN) != objwinOnly) {
1388 if (!variant) {
1389 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1390 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
1391 _compositeBlendObjwin(renderer, pixel, _brighten(color, renderer->bldy) | flags, current);
1392 } else if (renderer->blendEffect == BLEND_DARKEN) {
1393 _compositeBlendObjwin(renderer, pixel, _darken(color, renderer->bldy) | flags, current);
1394 }
1395 }
1396 }
1397}
1398
1399#define SPRITE_NORMAL_LOOP(DEPTH, TYPE) \
1400 SPRITE_YBASE_ ## DEPTH(inY); \
1401 for (; outX < condition; ++outX, inX += xOffset) { \
1402 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1403 continue; \
1404 } \
1405 SPRITE_XBASE_ ## DEPTH(inX); \
1406 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(inX); \
1407 }
1408
1409#define SPRITE_MOSAIC_LOOP(DEPTH, TYPE) \
1410 SPRITE_YBASE_ ## DEPTH(inY); \
1411 if (outX % mosaicH) { \
1412 inX += (mosaicH - (outX % mosaicH)) * xOffset; \
1413 outX += mosaicH - (outX % mosaicH); \
1414 } \
1415 for (; outX < condition; ++outX, inX += xOffset) { \
1416 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1417 continue; \
1418 } \
1419 int localX = inX - xOffset * (outX % mosaicH); \
1420 SPRITE_XBASE_ ## DEPTH(localX); \
1421 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1422 }
1423
1424#define SPRITE_TRANSFORMED_LOOP(DEPTH, TYPE) \
1425 int outX; \
1426 for (outX = x >= start ? x : start; outX < x + totalWidth && outX < end; ++outX) { \
1427 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1428 continue; \
1429 } \
1430 int inX = outX - x; \
1431 int localX = ((mat->a * (inX - (totalWidth >> 1)) + mat->b * (inY - (totalHeight >> 1))) >> 8) + (width >> 1); \
1432 int localY = ((mat->c * (inX - (totalWidth >> 1)) + mat->d * (inY - (totalHeight >> 1))) >> 8) + (height >> 1); \
1433 \
1434 if (localX < 0 || localX >= width || localY < 0 || localY >= height) { \
1435 continue; \
1436 } \
1437 \
1438 SPRITE_YBASE_ ## DEPTH(localY); \
1439 SPRITE_XBASE_ ## DEPTH(localX); \
1440 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1441 }
1442
1443#define SPRITE_XBASE_16(localX) unsigned xBase = (localX & ~0x7) * 4 + ((localX >> 1) & 2);
1444#define SPRITE_YBASE_16(localY) unsigned yBase = (localY & ~0x7) * (renderer->dispcnt.objCharacterMapping ? width >> 1 : 0x80) + (localY & 0x7) * 4;
1445
1446#define SPRITE_DRAW_PIXEL_16_NORMAL(localX) \
1447 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1448 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1449 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1450 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1451 }
1452
1453#define SPRITE_DRAW_PIXEL_16_OBJWIN(localX) \
1454 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1455 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1456 if (tileData) { \
1457 renderer->row[outX] |= FLAG_OBJWIN; \
1458 }
1459
1460#define SPRITE_XBASE_256(localX) unsigned xBase = (localX & ~0x7) * 8 + (localX & 6);
1461#define SPRITE_YBASE_256(localY) unsigned yBase = (localY & ~0x7) * (renderer->dispcnt.objCharacterMapping ? width : 0x80) + (localY & 0x7) * 8;
1462
1463#define SPRITE_DRAW_PIXEL_256_NORMAL(localX) \
1464 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1465 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1466 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1467 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1468 }
1469
1470#define SPRITE_DRAW_PIXEL_256_OBJWIN(localX) \
1471 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1472 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1473 if (tileData) { \
1474 renderer->row[outX] |= FLAG_OBJWIN; \
1475 }
1476
1477static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) {
1478 int width = _objSizes[sprite->shape * 8 + sprite->size * 2];
1479 int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1];
1480 int start = renderer->start;
1481 int end = renderer->end;
1482 uint32_t flags = sprite->priority << OFFSET_PRIORITY;
1483 flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT);
1484 flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN);
1485 int x = sprite->x;
1486 uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
1487 unsigned charBase = sprite->tile * 0x20;
1488 int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1489 if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
1490 // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
1491 variant = 0;
1492 }
1493 color_t* palette = &renderer->normalPalette[0x100];
1494 if (variant) {
1495 palette = &renderer->variantPalette[0x100];
1496 }
1497
1498 int outX = x >= start ? x : start;
1499 int condition = x + width;
1500 int mosaicH = 1;
1501 if (sprite->mosaic) {
1502 mosaicH = renderer->mosaic.objH + 1;
1503 if (condition % mosaicH) {
1504 condition += mosaicH - (condition % mosaicH);
1505 }
1506 }
1507 int inY = y - sprite->y;
1508 if (sprite->y + height - 256 >= 0) {
1509 inY += 256;
1510 }
1511 if (sprite->vflip) {
1512 inY = height - inY - 1;
1513 }
1514 if (end < condition) {
1515 condition = end;
1516 }
1517 int inX = outX - x;
1518 int xOffset = 1;
1519 if (sprite->hflip) {
1520 inX = width - inX - 1;
1521 xOffset = -1;
1522 }
1523 if (!sprite->multipalette) {
1524 palette = &palette[sprite->palette << 4];
1525 if (flags & FLAG_OBJWIN) {
1526 SPRITE_NORMAL_LOOP(16, OBJWIN);
1527 } else if (sprite->mosaic) {
1528 SPRITE_MOSAIC_LOOP(16, NORMAL);
1529 } else {
1530 SPRITE_NORMAL_LOOP(16, NORMAL);
1531 }
1532 } else {
1533 if (flags & FLAG_OBJWIN) {
1534 SPRITE_NORMAL_LOOP(256, OBJWIN);
1535 } else if (sprite->mosaic) {
1536 SPRITE_MOSAIC_LOOP(256, NORMAL);
1537 } else {
1538 SPRITE_NORMAL_LOOP(256, NORMAL);
1539 }
1540 }
1541 return 1;
1542}
1543
1544static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y) {
1545 int width = _objSizes[sprite->shape * 8 + sprite->size * 2];
1546 int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1];
1547 int totalWidth = width << sprite->doublesize;
1548 int totalHeight = height << sprite->doublesize;
1549 int start = renderer->start;
1550 int end = renderer->end;
1551 uint32_t flags = sprite->priority << OFFSET_PRIORITY;
1552 flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT);
1553 flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN);
1554 int x = sprite->x;
1555 uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
1556 unsigned charBase = sprite->tile * 0x20;
1557 struct GBAOAMMatrix* mat = &renderer->d.oam->mat[sprite->matIndex];
1558 int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1559 if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
1560 // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
1561 variant = 0;
1562 }
1563 color_t* palette = &renderer->normalPalette[0x100];
1564 if (variant) {
1565 palette = &renderer->variantPalette[0x100];
1566 }
1567 int inY = y - sprite->y;
1568 if (inY < 0) {
1569 inY += 256;
1570 }
1571 if (!sprite->multipalette) {
1572 palette = &palette[sprite->palette << 4];
1573 if (flags & FLAG_OBJWIN) {
1574 SPRITE_TRANSFORMED_LOOP(16, OBJWIN);
1575 } else {
1576 SPRITE_TRANSFORMED_LOOP(16, NORMAL);
1577 }
1578 } else {
1579 if (flags & FLAG_OBJWIN) {
1580 SPRITE_TRANSFORMED_LOOP(256, OBJWIN);
1581 } else {
1582 SPRITE_TRANSFORMED_LOOP(256, NORMAL);
1583 }
1584 }
1585 return 1;
1586}
1587
1588static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority) {
1589 int x;
1590 uint32_t* pixel = renderer->row;
1591 uint32_t flags = FLAG_TARGET_2 * renderer->target2Obj;
1592
1593 int objwinSlowPath = renderer->dispcnt.objwinEnable;
1594 int objwinDisable = 0;
1595 if (objwinSlowPath) {
1596 objwinDisable = !renderer->objwin.objEnable;
1597 }
1598 if (objwinSlowPath && objwinDisable) {
1599 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1600 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1601 uint32_t current = *pixel;
1602 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && !(current & FLAG_OBJWIN) && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1603 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1604 }
1605 }
1606 } else {
1607 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1608 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1609 uint32_t current = *pixel;
1610 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1611 _compositeBlendNoObjwin(renderer, pixel, color | flags, current);
1612 }
1613 }
1614 }
1615}
1616
1617static void _updatePalettes(struct GBAVideoSoftwareRenderer* renderer) {
1618 int i;
1619 if (renderer->blendEffect == BLEND_BRIGHTEN) {
1620 for (i = 0; i < 512; ++i) {
1621 renderer->variantPalette[i] = _brighten(renderer->normalPalette[i], renderer->bldy);
1622 }
1623 } else if (renderer->blendEffect == BLEND_DARKEN) {
1624 for (i = 0; i < 512; ++i) {
1625 renderer->variantPalette[i] = _darken(renderer->normalPalette[i], renderer->bldy);
1626 }
1627 } else {
1628 for (i = 0; i < 512; ++i) {
1629 renderer->variantPalette[i] = renderer->normalPalette[i];
1630 }
1631 }
1632}
1633
1634static inline unsigned _brighten(unsigned color, int y) {
1635 unsigned c = 0;
1636 unsigned a;
1637#ifdef COLOR_16_BIT
1638 a = color & 0x1F;
1639 c |= (a + ((0x1F - a) * y) / 16) & 0x1F;
1640
1641#ifdef COLOR_5_6_5
1642 a = color & 0x7C0;
1643 c |= (a + ((0x7C0 - a) * y) / 16) & 0x7C0;
1644
1645 a = color & 0xF800;
1646 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1647#else
1648 a = color & 0x3E0;
1649 c |= (a + ((0x3E0 - a) * y) / 16) & 0x3E0;
1650
1651 a = color & 0x7C00;
1652 c |= (a + ((0x7C00 - a) * y) / 16) & 0x7C00;
1653#endif
1654#else
1655 a = color & 0xF8;
1656 c |= (a + ((0xF8 - a) * y) / 16) & 0xF8;
1657
1658 a = color & 0xF800;
1659 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1660
1661 a = color & 0xF80000;
1662 c |= (a + ((0xF80000 - a) * y) / 16) & 0xF80000;
1663#endif
1664 return c;
1665}
1666
1667static inline unsigned _darken(unsigned color, int y) {
1668 unsigned c = 0;
1669 unsigned a;
1670#ifdef COLOR_16_BIT
1671 a = color & 0x1F;
1672 c |= (a - (a * y) / 16) & 0x1F;
1673
1674#ifdef COLOR_5_6_5
1675 a = color & 0x7C0;
1676 c |= (a - (a * y) / 16) & 0x7C0;
1677
1678 a = color & 0xF800;
1679 c |= (a - (a * y) / 16) & 0xF800;
1680#else
1681 a = color & 0x3E0;
1682 c |= (a - (a * y) / 16) & 0x3E0;
1683
1684 a = color & 0x7C00;
1685 c |= (a - (a * y) / 16) & 0x7C00;
1686#endif
1687#else
1688 a = color & 0xF8;
1689 c |= (a - (a * y) / 16) & 0xF8;
1690
1691 a = color & 0xF800;
1692 c |= (a - (a * y) / 16) & 0xF800;
1693
1694 a = color & 0xF80000;
1695 c |= (a - (a * y) / 16) & 0xF80000;
1696#endif
1697 return c;
1698}
1699
1700static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB) {
1701 unsigned c = 0;
1702 unsigned a, b;
1703#ifdef COLOR_16_BIT
1704#ifdef COLOR_5_6_5
1705 a = colorA & 0xF81F;
1706 b = colorB & 0xF81F;
1707 a |= (colorA & 0x7C0) << 16;
1708 b |= (colorB & 0x7C0) << 16;
1709 c = ((a * weightA + b * weightB) / 16);
1710 if (c & 0x08000000) {
1711 c = (c & ~0x0FC00000) | 0x07C00000;
1712 }
1713 if (c & 0x0020) {
1714 c = (c & ~0x003F) | 0x001F;
1715 }
1716 if (c & 0x10000) {
1717 c = (c & ~0x1F800) | 0xF800;
1718 }
1719 c = (c & 0xF81F) | ((c >> 16) & 0x07C0);
1720#else
1721 a = colorA & 0x7C1F;
1722 b = colorB & 0x7C1F;
1723 a |= (colorA & 0x3E0) << 16;
1724 b |= (colorB & 0x3E0) << 16;
1725 c = ((a * weightA + b * weightB) / 16);
1726 if (c & 0x04000000) {
1727 c = (c & ~0x07E00000) | 0x03E00000;
1728 }
1729 if (c & 0x0020) {
1730 c = (c & ~0x003F) | 0x001F;
1731 }
1732 if (c & 0x10000) {
1733 c = (c & ~0x1F800) | 0xF800;
1734 }
1735 c = (c & 0x7C1F) | ((c >> 16) & 0x03E0);
1736#endif
1737#else
1738 a = colorA & 0xF8;
1739 b = colorB & 0xF8;
1740 c |= ((a * weightA + b * weightB) / 16) & 0x1F8;
1741 if (c & 0x00000100) {
1742 c = 0x000000F8;
1743 }
1744
1745 a = colorA & 0xF800;
1746 b = colorB & 0xF800;
1747 c |= ((a * weightA + b * weightB) / 16) & 0x1F800;
1748 if (c & 0x00010000) {
1749 c = (c & 0x000000F8) | 0x0000F800;
1750 }
1751
1752 a = colorA & 0xF80000;
1753 b = colorB & 0xF80000;
1754 c |= ((a * weightA + b * weightB) / 16) & 0x1F80000;
1755 if (c & 0x01000000) {
1756 c = (c & 0x0000F8F8) | 0x00F80000;
1757 }
1758#endif
1759 return c;
1760}