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 = 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 = 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 (GBARegisterDISPCNTIsForcedBlank(softwareRenderer->dispcnt)) {
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 (GBARegisterDISPCNTIsWin0Enable(softwareRenderer->dispcnt) || GBARegisterDISPCNTIsWin1Enable(softwareRenderer->dispcnt) || GBARegisterDISPCNTIsObjwinEnable(softwareRenderer->dispcnt)) {
439 softwareRenderer->windows[0].control = softwareRenderer->winout;
440 if (GBARegisterDISPCNTIsWin1Enable(softwareRenderer->dispcnt) && y < softwareRenderer->winN[1].v.end && y >= softwareRenderer->winN[1].v.start) {
441 _breakWindow(softwareRenderer, &softwareRenderer->winN[1]);
442 }
443 if (GBARegisterDISPCNTIsWin0Enable(softwareRenderer->dispcnt) && 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 = GBARegisterDISPCNTGetBg0Enable(renderer->dispcnt);
528 renderer->bg[1].enabled = GBARegisterDISPCNTGetBg1Enable(renderer->dispcnt);
529 renderer->bg[2].enabled = GBARegisterDISPCNTGetBg2Enable(renderer->dispcnt);
530 renderer->bg[3].enabled = GBARegisterDISPCNTGetBg3Enable(renderer->dispcnt);
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 (GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt) && 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 (GBARegisterDISPCNTIsObjEnable(renderer->dispcnt)) {
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) && GBARegisterDISPCNTGetMode(renderer->dispcnt) < 2) {
684 _drawBackgroundMode0(renderer, &renderer->bg[0], y);
685 }
686 if (TEST_LAYER_ENABLED(1) && GBARegisterDISPCNTGetMode(renderer->dispcnt) < 2) {
687 _drawBackgroundMode0(renderer, &renderer->bg[1], y);
688 }
689 if (TEST_LAYER_ENABLED(2)) {
690 switch (GBARegisterDISPCNTGetMode(renderer->dispcnt)) {
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 (GBARegisterDISPCNTGetMode(renderer->dispcnt)) {
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 = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt); \
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 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
980 int end2 = end - 4; \
981 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
982 int shift = inX & 0x3; \
983 if (end2 > outX) { \
984 tileData = ((uint32_t*) vram)[charBase]; \
985 tileData >>= 8 * shift; \
986 shift = 0; \
987 for (; outX < end2; ++outX) { \
988 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 pixel = &renderer->row[outX]; \
997 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
998 } \
999 } else { \
1000 int start = outX; \
1001 outX = end - 1; \
1002 if (end2 > start) { \
1003 tileData = ((uint32_t*) vram)[charBase]; \
1004 for (; outX >= end2; --outX) { \
1005 pixel = &renderer->row[outX]; \
1006 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1007 } \
1008 ++charBase; \
1009 } \
1010 \
1011 tileData = ((uint32_t*) vram)[charBase]; \
1012 for (; outX >= renderer->start; --outX) { \
1013 pixel = &renderer->row[outX]; \
1014 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1015 } \
1016 outX = end; \
1017 }
1018
1019#define DRAW_BACKGROUND_MODE_0_TILE_PREFIX_256(BLEND, OBJWIN) \
1020 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1021 outX = renderer->end - 8 + end; \
1022 int end2 = 4 - end; \
1023 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1024 if (end2 > 0) { \
1025 tileData = ((uint32_t*) vram)[charBase]; \
1026 for (; outX < renderer->end - end2; ++outX) { \
1027 pixel = &renderer->row[outX]; \
1028 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1029 } \
1030 ++charBase; \
1031 } \
1032 \
1033 tileData = ((uint32_t*) vram)[charBase]; \
1034 for (; outX < renderer->end; ++outX) { \
1035 pixel = &renderer->row[outX]; \
1036 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1037 } \
1038 } else { \
1039 int shift = end & 0x3; \
1040 int start = outX; \
1041 outX = renderer->end - 1; \
1042 if (end2 > 0) { \
1043 tileData = ((uint32_t*) vram)[charBase]; \
1044 tileData >>= 8 * shift; \
1045 for (; outX >= start + 4; --outX) { \
1046 pixel = &renderer->row[outX]; \
1047 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1048 } \
1049 shift = 0; \
1050 } \
1051 \
1052 tileData = ((uint32_t*) vram)[charBase + 1]; \
1053 tileData >>= 8 * shift; \
1054 for (; outX >= start; --outX) { \
1055 pixel = &renderer->row[outX]; \
1056 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1057 } \
1058 }
1059
1060#define DRAW_BACKGROUND_MODE_0_TILES_256(BLEND, OBJWIN) \
1061 for (; tileX < tileEnd; ++tileX) { \
1062 BACKGROUND_TEXT_SELECT_CHARACTER; \
1063 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1064 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1065 tileData = ((uint32_t*) vram)[charBase]; \
1066 if (tileData) { \
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 ++pixel; \
1075 } else { \
1076 pixel += 4; \
1077 } \
1078 tileData = ((uint32_t*) vram)[charBase + 1]; \
1079 if (tileData) { \
1080 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1081 ++pixel; \
1082 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1083 ++pixel; \
1084 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1085 ++pixel; \
1086 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1087 ++pixel; \
1088 } else { \
1089 pixel += 4; \
1090 } \
1091 } else { \
1092 uint32_t tileData = ((uint32_t*) vram)[charBase + 1]; \
1093 if (tileData) { \
1094 pixel += 3; \
1095 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1096 --pixel; \
1097 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1098 --pixel; \
1099 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1100 --pixel; \
1101 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1102 } \
1103 pixel += 4; \
1104 tileData = ((uint32_t*) vram)[charBase]; \
1105 if (tileData) { \
1106 pixel += 3; \
1107 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1108 --pixel; \
1109 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1110 --pixel; \
1111 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1112 --pixel; \
1113 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1114 } \
1115 pixel += 4; \
1116 } \
1117 }
1118
1119#define DRAW_BACKGROUND_MODE_0_MOSAIC_256(BLEND, OBJWIN) \
1120 for (; tileX < tileEnd; ++tileX) { \
1121 BACKGROUND_TEXT_SELECT_CHARACTER; \
1122 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1123 tileData = carryData; \
1124 for (x = 0; x < 8; ++x) { \
1125 if (!mosaicWait) { \
1126 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1127 if (x >= 4) { \
1128 tileData = ((uint32_t*) vram)[charBase + 1]; \
1129 tileData >>= (x - 4) * 8; \
1130 } else { \
1131 tileData = ((uint32_t*) vram)[charBase]; \
1132 tileData >>= x * 8; \
1133 } \
1134 } else { \
1135 if (x >= 4) { \
1136 tileData = ((uint32_t*) vram)[charBase]; \
1137 tileData >>= (7 - x) * 8; \
1138 } else { \
1139 tileData = ((uint32_t*) vram)[charBase + 1]; \
1140 tileData >>= (3 - x) * 8; \
1141 } \
1142 } \
1143 tileData &= 0xFF; \
1144 carryData = tileData; \
1145 mosaicWait = mosaicH; \
1146 } \
1147 tileData |= tileData << 8; \
1148 --mosaicWait; \
1149 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1150 ++pixel; \
1151 } \
1152 }
1153
1154#define DRAW_BACKGROUND_MODE_0(BPP, BLEND, OBJWIN) \
1155 uint32_t* pixel = &renderer->row[outX]; \
1156 if (background->mosaic && renderer->mosaic.bgH) { \
1157 int mosaicH = renderer->mosaic.bgH + 1; \
1158 int x; \
1159 int mosaicWait = outX % mosaicH; \
1160 int carryData = 0; \
1161 paletteData = 0; /* Quiets compiler warning */ \
1162 DRAW_BACKGROUND_MODE_0_MOSAIC_ ## BPP (BLEND, OBJWIN) \
1163 return; \
1164 } \
1165 \
1166 if (inX & 0x7) { \
1167 int mod8 = inX & 0x7; \
1168 BACKGROUND_TEXT_SELECT_CHARACTER; \
1169 \
1170 int end = outX + 0x8 - mod8; \
1171 if (end > renderer->end) { \
1172 /* TODO: ensure tiles are properly aligned from this*/ \
1173 end = renderer->end; \
1174 } \
1175 if (end == outX) { \
1176 return; \
1177 } \
1178 DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_ ## BPP (BLEND, OBJWIN) \
1179 } \
1180 if (inX & 0x7 || (renderer->end - renderer->start) & 0x7) { \
1181 tileX = tileEnd; \
1182 int pixelData; \
1183 int mod8 = (inX + renderer->end - renderer->start) & 0x7; \
1184 BACKGROUND_TEXT_SELECT_CHARACTER; \
1185 \
1186 int end = 0x8 - mod8; \
1187 UNUSED(end); \
1188 DRAW_BACKGROUND_MODE_0_TILE_PREFIX_ ## BPP (BLEND, OBJWIN) \
1189 \
1190 tileX = (inX & 0x7) != 0; \
1191 outX = renderer->start + tileX * 8 - (inX & 0x7); \
1192 } \
1193 \
1194 pixel = &renderer->row[outX]; \
1195 DRAW_BACKGROUND_MODE_0_TILES_ ## BPP (BLEND, OBJWIN)
1196
1197static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y) {
1198 int inX = renderer->start + background->x;
1199 if (background->mosaic) {
1200 int mosaicV = renderer->mosaic.bgV + 1;
1201 y -= y % mosaicV;
1202 }
1203 int inY = y + background->y;
1204 uint16_t mapData;
1205
1206 unsigned yBase = inY & 0xF8;
1207 if (background->size == 2) {
1208 yBase += inY & 0x100;
1209 } else if (background->size == 3) {
1210 yBase += (inY & 0x100) << 1;
1211 }
1212 yBase = (background->screenBase >> 1) + (yBase << 2);
1213
1214 int localX;
1215 int localY;
1216
1217 unsigned xBase;
1218
1219 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND;
1220 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA);
1221 flags |= FLAG_TARGET_2 * background->target2;
1222
1223 uint32_t screenBase;
1224 uint32_t charBase;
1225 int variant = background->target1 && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1226 color_t* mainPalette = renderer->normalPalette;
1227 if (variant) {
1228 mainPalette = renderer->variantPalette;
1229 }
1230 color_t* palette = mainPalette;
1231 PREPARE_OBJWIN;
1232
1233 int outX = renderer->start;
1234
1235 uint32_t tileData;
1236 uint32_t current;
1237 int pixelData;
1238 int paletteData;
1239 int tileX = 0;
1240 int tileEnd = (renderer->end - renderer->start + (inX & 0x7)) >> 3;
1241 uint16_t* vram = renderer->d.vram;
1242
1243 if (!objwinSlowPath) {
1244 if (!(flags & FLAG_TARGET_2)) {
1245 if (!background->multipalette) {
1246 DRAW_BACKGROUND_MODE_0(16, NoBlend, NO_OBJWIN);
1247 } else {
1248 DRAW_BACKGROUND_MODE_0(256, NoBlend, NO_OBJWIN);
1249 }
1250 } else {
1251 if (!background->multipalette) {
1252 DRAW_BACKGROUND_MODE_0(16, Blend, NO_OBJWIN);
1253 } else {
1254 DRAW_BACKGROUND_MODE_0(256, Blend, NO_OBJWIN);
1255 }
1256 }
1257 } else {
1258 if (!(flags & FLAG_TARGET_2)) {
1259 if (!background->multipalette) {
1260 DRAW_BACKGROUND_MODE_0(16, NoBlend, OBJWIN);
1261 } else {
1262 DRAW_BACKGROUND_MODE_0(256, NoBlend, OBJWIN);
1263 }
1264 } else {
1265 if (!background->multipalette) {
1266 DRAW_BACKGROUND_MODE_0(16, Blend, OBJWIN);
1267 } else {
1268 DRAW_BACKGROUND_MODE_0(256, Blend, OBJWIN);
1269 }
1270 }
1271 }
1272}
1273
1274#define BACKGROUND_BITMAP_INIT \
1275 UNUSED(unused); \
1276 int32_t x = background->sx + (renderer->start - 1) * background->dx; \
1277 int32_t y = background->sy + (renderer->start - 1) * background->dy; \
1278 int32_t localX; \
1279 int32_t localY; \
1280 \
1281 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND; \
1282 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA); \
1283 flags |= FLAG_TARGET_2 * background->target2; \
1284 int variant = background->target1 && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN); \
1285 color_t* palette = renderer->normalPalette; \
1286 if (variant) { \
1287 palette = renderer->variantPalette; \
1288 } \
1289 PREPARE_OBJWIN;
1290
1291#define BACKGROUND_BITMAP_ITERATE(W, H) \
1292 x += background->dx; \
1293 y += background->dy; \
1294 \
1295 if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
1296 continue; \
1297 } else { \
1298 localX = x; \
1299 localY = y; \
1300 }
1301
1302static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1303 int sizeAdjusted = 0x8000 << background->size;
1304
1305 BACKGROUND_BITMAP_INIT;
1306
1307 uint32_t screenBase = background->screenBase;
1308 uint32_t charBase = background->charBase;
1309 uint8_t mapData;
1310 uint8_t tileData;
1311
1312 int outX;
1313 uint32_t* pixel;
1314 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1315 x += background->dx;
1316 y += background->dy;
1317
1318 if (background->overflow) {
1319 localX = x & (sizeAdjusted - 1);
1320 localY = y & (sizeAdjusted - 1);
1321 } else if ((x | y) & ~(sizeAdjusted - 1)) {
1322 continue;
1323 } else {
1324 localX = x;
1325 localY = y;
1326 }
1327 mapData = ((uint8_t*)renderer->d.vram)[screenBase + (localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)];
1328 tileData = ((uint8_t*)renderer->d.vram)[charBase + (mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)];
1329
1330 uint32_t current = *pixel;
1331 if (tileData && IS_WRITABLE(current)) {
1332 if (!objwinSlowPath) {
1333 _compositeBlendNoObjwin(renderer, pixel, palette[tileData] | flags, current);
1334 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1335 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1336 _compositeBlendObjwin(renderer, pixel, currentPalette[tileData] | flags, current);
1337 }
1338 }
1339 }
1340}
1341
1342static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1343 BACKGROUND_BITMAP_INIT;
1344
1345 uint32_t color;
1346
1347 int outX;
1348 uint32_t* pixel;
1349 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1350 BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
1351
1352 color = ((uint16_t*)renderer->d.vram)[(localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
1353#ifndef COLOR_16_BIT
1354 unsigned color32;
1355 color32 = 0;
1356 color32 |= (color << 3) & 0xF8;
1357 color32 |= (color << 6) & 0xF800;
1358 color32 |= (color << 9) & 0xF80000;
1359 color = color32;
1360#endif
1361
1362 uint32_t current = *pixel;
1363 if (!objwinSlowPath || !(current & FLAG_OBJWIN) != objwinOnly) {
1364 if (!variant) {
1365 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1366 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
1367 _compositeBlendObjwin(renderer, pixel, _brighten(color, renderer->bldy) | flags, current);
1368 } else if (renderer->blendEffect == BLEND_DARKEN) {
1369 _compositeBlendObjwin(renderer, pixel, _darken(color, renderer->bldy) | flags, current);
1370 }
1371 }
1372 }
1373}
1374
1375static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1376 BACKGROUND_BITMAP_INIT;
1377
1378 uint16_t color;
1379 uint32_t offset = 0;
1380 if (GBARegisterDISPCNTIsFrameSelect(renderer->dispcnt)) {
1381 offset = 0xA000;
1382 }
1383
1384 int outX;
1385 uint32_t* pixel;
1386 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1387 BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
1388
1389 color = ((uint8_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
1390
1391 uint32_t current = *pixel;
1392 if (color && IS_WRITABLE(current)) {
1393 if (!objwinSlowPath) {
1394 _compositeBlendNoObjwin(renderer, pixel, palette[color] | flags, current);
1395 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1396 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1397 _compositeBlendObjwin(renderer, pixel, currentPalette[color] | flags, current);
1398 }
1399 }
1400 }
1401}
1402
1403static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1404 BACKGROUND_BITMAP_INIT;
1405
1406 uint32_t color;
1407 uint32_t offset = 0;
1408 if (GBARegisterDISPCNTIsFrameSelect(renderer->dispcnt)) {
1409 offset = 0xA000;
1410 }
1411
1412 int outX;
1413 uint32_t* pixel;
1414 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1415 BACKGROUND_BITMAP_ITERATE(160, 128);
1416
1417 color = ((uint16_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * 160];
1418#ifndef COLOR_16_BIT
1419 unsigned color32 = 0;
1420 color32 |= (color << 9) & 0xF80000;
1421 color32 |= (color << 3) & 0xF8;
1422 color32 |= (color << 6) & 0xF800;
1423 color = color32;
1424#endif
1425
1426 uint32_t current = *pixel;
1427 if (!objwinSlowPath || !(current & FLAG_OBJWIN) != objwinOnly) {
1428 if (!variant) {
1429 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1430 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
1431 _compositeBlendObjwin(renderer, pixel, _brighten(color, renderer->bldy) | flags, current);
1432 } else if (renderer->blendEffect == BLEND_DARKEN) {
1433 _compositeBlendObjwin(renderer, pixel, _darken(color, renderer->bldy) | flags, current);
1434 }
1435 }
1436 }
1437}
1438
1439#define SPRITE_NORMAL_LOOP(DEPTH, TYPE) \
1440 SPRITE_YBASE_ ## DEPTH(inY); \
1441 for (; outX < condition; ++outX, inX += xOffset) { \
1442 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1443 continue; \
1444 } \
1445 SPRITE_XBASE_ ## DEPTH(inX); \
1446 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(inX); \
1447 }
1448
1449#define SPRITE_MOSAIC_LOOP(DEPTH, TYPE) \
1450 SPRITE_YBASE_ ## DEPTH(inY); \
1451 if (outX % mosaicH) { \
1452 inX += (mosaicH - (outX % mosaicH)) * xOffset; \
1453 outX += mosaicH - (outX % mosaicH); \
1454 } \
1455 for (; outX < condition; ++outX, inX += xOffset) { \
1456 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1457 continue; \
1458 } \
1459 int localX = inX - xOffset * (outX % mosaicH); \
1460 SPRITE_XBASE_ ## DEPTH(localX); \
1461 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1462 }
1463
1464#define SPRITE_TRANSFORMED_LOOP(DEPTH, TYPE) \
1465 int outX; \
1466 for (outX = x >= start ? x : start; outX < x + totalWidth && outX < end; ++outX) { \
1467 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1468 continue; \
1469 } \
1470 int inX = outX - x; \
1471 int localX = ((mat->a * (inX - (totalWidth >> 1)) + mat->b * (inY - (totalHeight >> 1))) >> 8) + (width >> 1); \
1472 int localY = ((mat->c * (inX - (totalWidth >> 1)) + mat->d * (inY - (totalHeight >> 1))) >> 8) + (height >> 1); \
1473 \
1474 if (localX < 0 || localX >= width || localY < 0 || localY >= height) { \
1475 continue; \
1476 } \
1477 \
1478 SPRITE_YBASE_ ## DEPTH(localY); \
1479 SPRITE_XBASE_ ## DEPTH(localX); \
1480 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1481 }
1482
1483#define SPRITE_XBASE_16(localX) unsigned xBase = (localX & ~0x7) * 4 + ((localX >> 1) & 2);
1484#define SPRITE_YBASE_16(localY) unsigned yBase = (localY & ~0x7) * (GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width >> 1 : 0x80) + (localY & 0x7) * 4;
1485
1486#define SPRITE_DRAW_PIXEL_16_NORMAL(localX) \
1487 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1488 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1489 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1490 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1491 }
1492
1493#define SPRITE_DRAW_PIXEL_16_OBJWIN(localX) \
1494 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1495 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1496 if (tileData) { \
1497 renderer->row[outX] |= FLAG_OBJWIN; \
1498 }
1499
1500#define SPRITE_XBASE_256(localX) unsigned xBase = (localX & ~0x7) * 8 + (localX & 6);
1501#define SPRITE_YBASE_256(localY) unsigned yBase = (localY & ~0x7) * (GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width : 0x80) + (localY & 0x7) * 8;
1502
1503#define SPRITE_DRAW_PIXEL_256_NORMAL(localX) \
1504 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1505 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1506 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1507 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1508 }
1509
1510#define SPRITE_DRAW_PIXEL_256_OBJWIN(localX) \
1511 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1512 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1513 if (tileData) { \
1514 renderer->row[outX] |= FLAG_OBJWIN; \
1515 }
1516
1517static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) {
1518 int width = _objSizes[sprite->shape * 8 + sprite->size * 2];
1519 int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1];
1520 int start = renderer->start;
1521 int end = renderer->end;
1522 uint32_t flags = sprite->priority << OFFSET_PRIORITY;
1523 flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT);
1524 flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN);
1525 int x = sprite->x;
1526 uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
1527 unsigned charBase = sprite->tile * 0x20;
1528 int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1529 if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
1530 // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
1531 variant = 0;
1532 }
1533 color_t* palette = &renderer->normalPalette[0x100];
1534 if (variant) {
1535 palette = &renderer->variantPalette[0x100];
1536 }
1537
1538 int outX = x >= start ? x : start;
1539 int condition = x + width;
1540 int mosaicH = 1;
1541 if (sprite->mosaic) {
1542 mosaicH = renderer->mosaic.objH + 1;
1543 if (condition % mosaicH) {
1544 condition += mosaicH - (condition % mosaicH);
1545 }
1546 }
1547 int inY = y - sprite->y;
1548 if (sprite->y + height - 256 >= 0) {
1549 inY += 256;
1550 }
1551 if (sprite->vflip) {
1552 inY = height - inY - 1;
1553 }
1554 if (end < condition) {
1555 condition = end;
1556 }
1557 int inX = outX - x;
1558 int xOffset = 1;
1559 if (sprite->hflip) {
1560 inX = width - inX - 1;
1561 xOffset = -1;
1562 }
1563 if (!sprite->multipalette) {
1564 palette = &palette[sprite->palette << 4];
1565 if (flags & FLAG_OBJWIN) {
1566 SPRITE_NORMAL_LOOP(16, OBJWIN);
1567 } else if (sprite->mosaic) {
1568 SPRITE_MOSAIC_LOOP(16, NORMAL);
1569 } else {
1570 SPRITE_NORMAL_LOOP(16, NORMAL);
1571 }
1572 } else {
1573 if (flags & FLAG_OBJWIN) {
1574 SPRITE_NORMAL_LOOP(256, OBJWIN);
1575 } else if (sprite->mosaic) {
1576 SPRITE_MOSAIC_LOOP(256, NORMAL);
1577 } else {
1578 SPRITE_NORMAL_LOOP(256, NORMAL);
1579 }
1580 }
1581 return 1;
1582}
1583
1584static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y) {
1585 int width = _objSizes[sprite->shape * 8 + sprite->size * 2];
1586 int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1];
1587 int totalWidth = width << sprite->doublesize;
1588 int totalHeight = height << sprite->doublesize;
1589 int start = renderer->start;
1590 int end = renderer->end;
1591 uint32_t flags = sprite->priority << OFFSET_PRIORITY;
1592 flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT);
1593 flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN);
1594 int x = sprite->x;
1595 uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
1596 unsigned charBase = sprite->tile * 0x20;
1597 struct GBAOAMMatrix* mat = &renderer->d.oam->mat[sprite->matIndex];
1598 int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1599 if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
1600 // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
1601 variant = 0;
1602 }
1603 color_t* palette = &renderer->normalPalette[0x100];
1604 if (variant) {
1605 palette = &renderer->variantPalette[0x100];
1606 }
1607 int inY = y - sprite->y;
1608 if (inY < 0) {
1609 inY += 256;
1610 }
1611 if (!sprite->multipalette) {
1612 palette = &palette[sprite->palette << 4];
1613 if (flags & FLAG_OBJWIN) {
1614 SPRITE_TRANSFORMED_LOOP(16, OBJWIN);
1615 } else {
1616 SPRITE_TRANSFORMED_LOOP(16, NORMAL);
1617 }
1618 } else {
1619 if (flags & FLAG_OBJWIN) {
1620 SPRITE_TRANSFORMED_LOOP(256, OBJWIN);
1621 } else {
1622 SPRITE_TRANSFORMED_LOOP(256, NORMAL);
1623 }
1624 }
1625 return 1;
1626}
1627
1628static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority) {
1629 int x;
1630 uint32_t* pixel = renderer->row;
1631 uint32_t flags = FLAG_TARGET_2 * renderer->target2Obj;
1632
1633 int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt);
1634 int objwinDisable = 0;
1635 if (objwinSlowPath) {
1636 objwinDisable = !renderer->objwin.objEnable;
1637 }
1638 if (objwinSlowPath && objwinDisable) {
1639 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1640 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1641 uint32_t current = *pixel;
1642 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && !(current & FLAG_OBJWIN) && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1643 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1644 }
1645 }
1646 } else {
1647 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1648 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1649 uint32_t current = *pixel;
1650 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1651 _compositeBlendNoObjwin(renderer, pixel, color | flags, current);
1652 }
1653 }
1654 }
1655}
1656
1657static void _updatePalettes(struct GBAVideoSoftwareRenderer* renderer) {
1658 int i;
1659 if (renderer->blendEffect == BLEND_BRIGHTEN) {
1660 for (i = 0; i < 512; ++i) {
1661 renderer->variantPalette[i] = _brighten(renderer->normalPalette[i], renderer->bldy);
1662 }
1663 } else if (renderer->blendEffect == BLEND_DARKEN) {
1664 for (i = 0; i < 512; ++i) {
1665 renderer->variantPalette[i] = _darken(renderer->normalPalette[i], renderer->bldy);
1666 }
1667 } else {
1668 for (i = 0; i < 512; ++i) {
1669 renderer->variantPalette[i] = renderer->normalPalette[i];
1670 }
1671 }
1672}
1673
1674static inline unsigned _brighten(unsigned color, int y) {
1675 unsigned c = 0;
1676 unsigned a;
1677#ifdef COLOR_16_BIT
1678 a = color & 0x1F;
1679 c |= (a + ((0x1F - a) * y) / 16) & 0x1F;
1680
1681#ifdef COLOR_5_6_5
1682 a = color & 0x7C0;
1683 c |= (a + ((0x7C0 - a) * y) / 16) & 0x7C0;
1684
1685 a = color & 0xF800;
1686 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1687#else
1688 a = color & 0x3E0;
1689 c |= (a + ((0x3E0 - a) * y) / 16) & 0x3E0;
1690
1691 a = color & 0x7C00;
1692 c |= (a + ((0x7C00 - a) * y) / 16) & 0x7C00;
1693#endif
1694#else
1695 a = color & 0xF8;
1696 c |= (a + ((0xF8 - a) * y) / 16) & 0xF8;
1697
1698 a = color & 0xF800;
1699 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1700
1701 a = color & 0xF80000;
1702 c |= (a + ((0xF80000 - a) * y) / 16) & 0xF80000;
1703#endif
1704 return c;
1705}
1706
1707static inline unsigned _darken(unsigned color, int y) {
1708 unsigned c = 0;
1709 unsigned a;
1710#ifdef COLOR_16_BIT
1711 a = color & 0x1F;
1712 c |= (a - (a * y) / 16) & 0x1F;
1713
1714#ifdef COLOR_5_6_5
1715 a = color & 0x7C0;
1716 c |= (a - (a * y) / 16) & 0x7C0;
1717
1718 a = color & 0xF800;
1719 c |= (a - (a * y) / 16) & 0xF800;
1720#else
1721 a = color & 0x3E0;
1722 c |= (a - (a * y) / 16) & 0x3E0;
1723
1724 a = color & 0x7C00;
1725 c |= (a - (a * y) / 16) & 0x7C00;
1726#endif
1727#else
1728 a = color & 0xF8;
1729 c |= (a - (a * y) / 16) & 0xF8;
1730
1731 a = color & 0xF800;
1732 c |= (a - (a * y) / 16) & 0xF800;
1733
1734 a = color & 0xF80000;
1735 c |= (a - (a * y) / 16) & 0xF80000;
1736#endif
1737 return c;
1738}
1739
1740static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB) {
1741 unsigned c = 0;
1742 unsigned a, b;
1743#ifdef COLOR_16_BIT
1744#ifdef COLOR_5_6_5
1745 a = colorA & 0xF81F;
1746 b = colorB & 0xF81F;
1747 a |= (colorA & 0x7C0) << 16;
1748 b |= (colorB & 0x7C0) << 16;
1749 c = ((a * weightA + b * weightB) / 16);
1750 if (c & 0x08000000) {
1751 c = (c & ~0x0FC00000) | 0x07C00000;
1752 }
1753 if (c & 0x0020) {
1754 c = (c & ~0x003F) | 0x001F;
1755 }
1756 if (c & 0x10000) {
1757 c = (c & ~0x1F800) | 0xF800;
1758 }
1759 c = (c & 0xF81F) | ((c >> 16) & 0x07C0);
1760#else
1761 a = colorA & 0x7C1F;
1762 b = colorB & 0x7C1F;
1763 a |= (colorA & 0x3E0) << 16;
1764 b |= (colorB & 0x3E0) << 16;
1765 c = ((a * weightA + b * weightB) / 16);
1766 if (c & 0x04000000) {
1767 c = (c & ~0x07E00000) | 0x03E00000;
1768 }
1769 if (c & 0x0020) {
1770 c = (c & ~0x003F) | 0x001F;
1771 }
1772 if (c & 0x10000) {
1773 c = (c & ~0x1F800) | 0xF800;
1774 }
1775 c = (c & 0x7C1F) | ((c >> 16) & 0x03E0);
1776#endif
1777#else
1778 a = colorA & 0xF8;
1779 b = colorB & 0xF8;
1780 c |= ((a * weightA + b * weightB) / 16) & 0x1F8;
1781 if (c & 0x00000100) {
1782 c = 0x000000F8;
1783 }
1784
1785 a = colorA & 0xF800;
1786 b = colorB & 0xF800;
1787 c |= ((a * weightA + b * weightB) / 16) & 0x1F800;
1788 if (c & 0x00010000) {
1789 c = (c & 0x000000F8) | 0x0000F800;
1790 }
1791
1792 a = colorA & 0xF80000;
1793 b = colorB & 0xF80000;
1794 c |= ((a * weightA + b * weightB) / 16) & 0x1F80000;
1795 if (c & 0x01000000) {
1796 c = (c & 0x0000F8F8) | 0x00F80000;
1797 }
1798#endif
1799 return c;
1800}