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 bg->priority = GBARegisterBGCNTGetPriority(value);
536 bg->charBase = GBARegisterBGCNTGetCharBase(value) << 14;
537 bg->mosaic = GBARegisterBGCNTGetMosaic(value);
538 bg->multipalette = GBARegisterBGCNTGet256Color(value);
539 bg->screenBase = GBARegisterBGCNTGetScreenBase(value) << 11;
540 bg->overflow = GBARegisterBGCNTGetOverflow(value);
541 bg->size = GBARegisterBGCNTGetSize(value);
542}
543
544static void GBAVideoSoftwareRendererWriteBGPA(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
545 bg->dx = value;
546}
547
548static void GBAVideoSoftwareRendererWriteBGPB(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
549 bg->dmx = value;
550}
551
552static void GBAVideoSoftwareRendererWriteBGPC(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
553 bg->dy = value;
554}
555
556static void GBAVideoSoftwareRendererWriteBGPD(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
557 bg->dmy = value;
558}
559
560static void GBAVideoSoftwareRendererWriteBGX_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
561 bg->refx = (bg->refx & 0xFFFF0000) | value;
562 bg->sx = bg->refx;
563}
564
565static void GBAVideoSoftwareRendererWriteBGX_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
566 bg->refx = (bg->refx & 0x0000FFFF) | (value << 16);
567 bg->refx <<= 4;
568 bg->refx >>= 4;
569 bg->sx = bg->refx;
570}
571
572static void GBAVideoSoftwareRendererWriteBGY_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
573 bg->refy = (bg->refy & 0xFFFF0000) | value;
574 bg->sy = bg->refy;
575}
576
577static void GBAVideoSoftwareRendererWriteBGY_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
578 bg->refy = (bg->refy & 0x0000FFFF) | (value << 16);
579 bg->refy <<= 4;
580 bg->refy >>= 4;
581 bg->sy = bg->refy;
582}
583
584static void GBAVideoSoftwareRendererWriteBLDCNT(struct GBAVideoSoftwareRenderer* renderer, uint16_t value) {
585 union {
586 struct {
587 unsigned target1Bg0 : 1;
588 unsigned target1Bg1 : 1;
589 unsigned target1Bg2 : 1;
590 unsigned target1Bg3 : 1;
591 unsigned target1Obj : 1;
592 unsigned target1Bd : 1;
593 enum BlendEffect effect : 2;
594 unsigned target2Bg0 : 1;
595 unsigned target2Bg1 : 1;
596 unsigned target2Bg2 : 1;
597 unsigned target2Bg3 : 1;
598 unsigned target2Obj : 1;
599 unsigned target2Bd : 1;
600 };
601 uint16_t packed;
602 } bldcnt = { .packed = value };
603
604 enum BlendEffect oldEffect = renderer->blendEffect;
605
606 renderer->bg[0].target1 = bldcnt.target1Bg0;
607 renderer->bg[1].target1 = bldcnt.target1Bg1;
608 renderer->bg[2].target1 = bldcnt.target1Bg2;
609 renderer->bg[3].target1 = bldcnt.target1Bg3;
610 renderer->bg[0].target2 = bldcnt.target2Bg0;
611 renderer->bg[1].target2 = bldcnt.target2Bg1;
612 renderer->bg[2].target2 = bldcnt.target2Bg2;
613 renderer->bg[3].target2 = bldcnt.target2Bg3;
614
615 renderer->blendEffect = bldcnt.effect;
616 renderer->target1Obj = bldcnt.target1Obj;
617 renderer->target1Bd = bldcnt.target1Bd;
618 renderer->target2Obj = bldcnt.target2Obj;
619 renderer->target2Bd = bldcnt.target2Bd;
620
621 renderer->anyTarget2 = bldcnt.packed & 0x3F00;
622
623 if (oldEffect != renderer->blendEffect) {
624 _updatePalettes(renderer);
625 }
626}
627
628#define TEST_LAYER_ENABLED(X) \
629 (renderer->bg[X].enabled && \
630 (renderer->currentWindow.bg ## X ## Enable || \
631 (GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt) && renderer->objwin.bg ## X ## Enable)) && \
632 renderer->bg[X].priority == priority)
633
634static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y) {
635 int w;
636 renderer->end = 0;
637 int spriteLayers = 0;
638 if (GBARegisterDISPCNTIsObjEnable(renderer->dispcnt)) {
639 if (renderer->oamDirty) {
640 _cleanOAM(renderer);
641 }
642 int mosaicV = renderer->mosaic.objV + 1;
643 int mosaicY = y - (y % mosaicV);
644 for (w = 0; w < renderer->nWindows; ++w) {
645 renderer->start = renderer->end;
646 renderer->end = renderer->windows[w].endX;
647 renderer->currentWindow = renderer->windows[w].control;
648 if (!renderer->currentWindow.objEnable) {
649 continue;
650 }
651 int i;
652 int drawn;
653 for (i = 0; i < renderer->oamMax; ++i) {
654 int localY = y;
655 struct GBAVideoSoftwareSprite* sprite = &renderer->sprites[i];
656 if (sprite->obj.mosaic) {
657 localY = mosaicY;
658 }
659 if ((localY < sprite->y && (sprite->endY - 256 < 0 || localY >= sprite->endY - 256)) || localY >= sprite->endY) {
660 continue;
661 }
662 if (sprite->obj.transformed) {
663 drawn = _preprocessTransformedSprite(renderer, &sprite->tobj, localY);
664 } else {
665 drawn = _preprocessSprite(renderer, &sprite->obj, localY);
666 }
667 spriteLayers |= drawn << sprite->obj.priority;
668 }
669 }
670 }
671
672 int priority;
673 for (priority = 0; priority < 4; ++priority) {
674 if (spriteLayers & (1 << priority)) {
675 _postprocessSprite(renderer, priority);
676 }
677 renderer->end = 0;
678 for (w = 0; w < renderer->nWindows; ++w) {
679 renderer->start = renderer->end;
680 renderer->end = renderer->windows[w].endX;
681 renderer->currentWindow = renderer->windows[w].control;
682 if (TEST_LAYER_ENABLED(0) && GBARegisterDISPCNTGetMode(renderer->dispcnt) < 2) {
683 _drawBackgroundMode0(renderer, &renderer->bg[0], y);
684 }
685 if (TEST_LAYER_ENABLED(1) && GBARegisterDISPCNTGetMode(renderer->dispcnt) < 2) {
686 _drawBackgroundMode0(renderer, &renderer->bg[1], y);
687 }
688 if (TEST_LAYER_ENABLED(2)) {
689 switch (GBARegisterDISPCNTGetMode(renderer->dispcnt)) {
690 case 0:
691 _drawBackgroundMode0(renderer, &renderer->bg[2], y);
692 break;
693 case 1:
694 case 2:
695 _drawBackgroundMode2(renderer, &renderer->bg[2], y);
696 break;
697 case 3:
698 _drawBackgroundMode3(renderer, &renderer->bg[2], y);
699 break;
700 case 4:
701 _drawBackgroundMode4(renderer, &renderer->bg[2], y);
702 break;
703 case 5:
704 _drawBackgroundMode5(renderer, &renderer->bg[2], y);
705 break;
706 }
707 }
708 if (TEST_LAYER_ENABLED(3)) {
709 switch (GBARegisterDISPCNTGetMode(renderer->dispcnt)) {
710 case 0:
711 _drawBackgroundMode0(renderer, &renderer->bg[3], y);
712 break;
713 case 2:
714 _drawBackgroundMode2(renderer, &renderer->bg[3], y);
715 break;
716 }
717 }
718 }
719 }
720 renderer->bg[2].sx += renderer->bg[2].dmx;
721 renderer->bg[2].sy += renderer->bg[2].dmy;
722 renderer->bg[3].sx += renderer->bg[3].dmx;
723 renderer->bg[3].sy += renderer->bg[3].dmy;
724}
725
726// We stash the priority on the top bits so we can do a one-operator comparison
727// The lower the number, the higher the priority, and sprites take precendence over backgrounds
728// We want to do special processing if the color pixel is target 1, however
729
730static inline void _compositeBlendObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
731 if (color >= current) {
732 if (current & FLAG_TARGET_1 && color & FLAG_TARGET_2) {
733 color = _mix(renderer->blda, current, renderer->bldb, color);
734 } else {
735 color = current & 0x00FFFFFF;
736 }
737 } else {
738 color = (color & ~FLAG_TARGET_2) | (current & FLAG_OBJWIN);
739 }
740 *pixel = color;
741}
742
743static inline void _compositeBlendNoObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
744 // We stash the priority on the top bits so we can do a one-operator comparison
745 // The lower the number, the higher the priority, and sprites take precendence over backgrounds
746 // We want to do special processing if the color pixel is target 1, however
747 if (color >= current) {
748 if (current & FLAG_TARGET_1 && color & FLAG_TARGET_2) {
749 color = _mix(renderer->blda, current, renderer->bldb, color);
750 } else {
751 color = current & 0x00FFFFFF;
752 }
753 } else {
754 color = color & ~FLAG_TARGET_2;
755 }
756 *pixel = color;
757}
758
759static inline void _compositeNoBlendObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
760 UNUSED(renderer);
761 if (color < current) {
762 *pixel = color | (current & FLAG_OBJWIN);
763 }
764}
765
766static inline void _compositeNoBlendNoObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
767 UNUSED(renderer);
768 if (color < current) {
769 *pixel = color;
770 }
771}
772
773#define COMPOSITE_16_OBJWIN(BLEND) \
774 if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) { \
775 unsigned color = (current & FLAG_OBJWIN) ? objwinPalette[paletteData | pixelData] : palette[pixelData]; \
776 _composite ## BLEND ## Objwin(renderer, pixel, color | flags, current); \
777 }
778
779#define COMPOSITE_16_NO_OBJWIN(BLEND) \
780 _composite ## BLEND ## NoObjwin(renderer, pixel, palette[pixelData] | flags, current);
781
782#define COMPOSITE_256_OBJWIN(BLEND) \
783 if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) { \
784 unsigned color = (current & FLAG_OBJWIN) ? objwinPalette[pixelData] : palette[pixelData]; \
785 _composite ## BLEND ## Objwin(renderer, pixel, color | flags, current); \
786 }
787
788#define COMPOSITE_256_NO_OBJWIN(BLEND) \
789 COMPOSITE_16_NO_OBJWIN(BLEND)
790
791#define BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN) \
792 pixelData = tileData & 0xF; \
793 current = *pixel; \
794 if (pixelData && IS_WRITABLE(current)) { \
795 COMPOSITE_16_ ## OBJWIN (BLEND); \
796 } \
797 tileData >>= 4;
798
799#define BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN) \
800 pixelData = tileData & 0xFF; \
801 current = *pixel; \
802 if (pixelData && IS_WRITABLE(current)) { \
803 COMPOSITE_256_ ## OBJWIN (BLEND); \
804 } \
805 tileData >>= 8;
806
807#define BACKGROUND_TEXT_SELECT_CHARACTER \
808 localX = tileX * 8 + inX; \
809 xBase = localX & 0xF8; \
810 if (background->size & 1) { \
811 xBase += (localX & 0x100) << 5; \
812 } \
813 screenBase = yBase + (xBase >> 3); \
814 mapData = vram[screenBase]; \
815 localY = inY & 0x7; \
816 if (GBA_TEXT_MAP_VFLIP(mapData)) { \
817 localY = 7 - localY; \
818 }
819
820#define PREPARE_OBJWIN \
821 int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt); \
822 int objwinOnly = 0; \
823 int objwinForceEnable = 0; \
824 color_t* objwinPalette; \
825 if (objwinSlowPath) { \
826 if (background->target1 && renderer->objwin.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN)) { \
827 objwinPalette = renderer->variantPalette; \
828 } else { \
829 objwinPalette = renderer->normalPalette; \
830 } \
831 switch (background->index) { \
832 case 0: \
833 objwinForceEnable = renderer->objwin.bg0Enable && renderer->currentWindow.bg0Enable; \
834 objwinOnly = !renderer->objwin.bg0Enable; \
835 break; \
836 case 1: \
837 objwinForceEnable = renderer->objwin.bg1Enable && renderer->currentWindow.bg1Enable; \
838 objwinOnly = !renderer->objwin.bg1Enable; \
839 break; \
840 case 2: \
841 objwinForceEnable = renderer->objwin.bg2Enable && renderer->currentWindow.bg2Enable; \
842 objwinOnly = !renderer->objwin.bg2Enable; \
843 break; \
844 case 3: \
845 objwinForceEnable = renderer->objwin.bg3Enable && renderer->currentWindow.bg3Enable; \
846 objwinOnly = !renderer->objwin.bg3Enable; \
847 break; \
848 } \
849 }
850
851#define DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_16(BLEND, OBJWIN) \
852 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
853 palette = &mainPalette[paletteData]; \
854 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
855 tileData = ((uint32_t*) vram)[charBase]; \
856 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
857 tileData >>= 4 * mod8; \
858 for (; outX < end; ++outX) { \
859 uint32_t* pixel = &renderer->row[outX]; \
860 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
861 } \
862 } else { \
863 for (outX = end - 1; outX >= renderer->start; --outX) { \
864 uint32_t* pixel = &renderer->row[outX]; \
865 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
866 } \
867 }
868
869#define DRAW_BACKGROUND_MODE_0_TILE_PREFIX_16(BLEND, OBJWIN) \
870 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
871 tileData = ((uint32_t*) vram)[charBase]; \
872 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
873 palette = &mainPalette[paletteData]; \
874 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
875 outX = renderer->end - mod8; \
876 if (outX < renderer->start) { \
877 tileData >>= 4 * (renderer->start - outX); \
878 outX = renderer->start; \
879 } \
880 for (; outX < renderer->end; ++outX) { \
881 uint32_t* pixel = &renderer->row[outX]; \
882 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
883 } \
884 } else { \
885 tileData >>= 4 * (0x8 - mod8); \
886 int end2 = renderer->end - 8; \
887 if (end2 < -1) { \
888 end2 = -1; \
889 } \
890 for (outX = renderer->end - 1; outX > end2; --outX) { \
891 uint32_t* pixel = &renderer->row[outX]; \
892 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
893 } \
894 }
895
896#define DRAW_BACKGROUND_MODE_0_MOSAIC_16(BLEND, OBJWIN) \
897 for (; tileX < tileEnd; ++tileX) { \
898 BACKGROUND_TEXT_SELECT_CHARACTER; \
899 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
900 tileData = carryData; \
901 for (x = 0; x < 8; ++x) { \
902 if (!mosaicWait) { \
903 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
904 palette = &mainPalette[paletteData]; \
905 tileData = ((uint32_t*) vram)[charBase]; \
906 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
907 tileData >>= x * 4; \
908 } else { \
909 tileData >>= (7 - x) * 4; \
910 } \
911 tileData &= 0xF; \
912 tileData |= tileData << 4; \
913 tileData |= tileData << 8; \
914 tileData |= tileData << 12; \
915 tileData |= tileData << 16; \
916 tileData |= tileData << 20; \
917 tileData |= tileData << 24; \
918 tileData |= tileData << 28; \
919 carryData = tileData; \
920 mosaicWait = mosaicH; \
921 } \
922 --mosaicWait; \
923 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
924 ++pixel; \
925 } \
926 }
927
928#define DRAW_BACKGROUND_MODE_0_TILES_16(BLEND, OBJWIN) \
929 for (; tileX < tileEnd; ++tileX) { \
930 BACKGROUND_TEXT_SELECT_CHARACTER; \
931 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
932 palette = &mainPalette[paletteData]; \
933 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) >> 2) + localY; \
934 tileData = ((uint32_t*) vram)[charBase]; \
935 if (tileData) { \
936 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
937 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
938 ++pixel; \
939 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
940 ++pixel; \
941 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
942 ++pixel; \
943 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
944 ++pixel; \
945 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
946 ++pixel; \
947 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
948 ++pixel; \
949 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
950 ++pixel; \
951 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
952 ++pixel; \
953 } else { \
954 pixel += 7; \
955 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
956 --pixel; \
957 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
958 --pixel; \
959 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
960 --pixel; \
961 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
962 --pixel; \
963 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
964 --pixel; \
965 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
966 --pixel; \
967 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
968 --pixel; \
969 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
970 pixel += 8; \
971 } \
972 } else { \
973 pixel += 8; \
974 } \
975 }
976
977#define DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_256(BLEND, OBJWIN) \
978 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
979 int end2 = end - 4; \
980 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
981 int shift = inX & 0x3; \
982 if (end2 > outX) { \
983 tileData = ((uint32_t*) vram)[charBase]; \
984 tileData >>= 8 * shift; \
985 shift = 0; \
986 for (; outX < end2; ++outX) { \
987 pixel = &renderer->row[outX]; \
988 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
989 } \
990 } \
991 \
992 tileData = ((uint32_t*) vram)[charBase + 1]; \
993 tileData >>= 8 * shift; \
994 for (; outX < end; ++outX) { \
995 pixel = &renderer->row[outX]; \
996 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
997 } \
998 } else { \
999 int start = outX; \
1000 outX = end - 1; \
1001 if (end2 > start) { \
1002 tileData = ((uint32_t*) vram)[charBase]; \
1003 for (; outX >= end2; --outX) { \
1004 pixel = &renderer->row[outX]; \
1005 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1006 } \
1007 ++charBase; \
1008 } \
1009 \
1010 tileData = ((uint32_t*) vram)[charBase]; \
1011 for (; outX >= renderer->start; --outX) { \
1012 pixel = &renderer->row[outX]; \
1013 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1014 } \
1015 outX = end; \
1016 }
1017
1018#define DRAW_BACKGROUND_MODE_0_TILE_PREFIX_256(BLEND, OBJWIN) \
1019 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1020 outX = renderer->end - 8 + end; \
1021 int end2 = 4 - end; \
1022 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1023 if (end2 > 0) { \
1024 tileData = ((uint32_t*) vram)[charBase]; \
1025 for (; outX < renderer->end - end2; ++outX) { \
1026 pixel = &renderer->row[outX]; \
1027 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1028 } \
1029 ++charBase; \
1030 } \
1031 \
1032 tileData = ((uint32_t*) vram)[charBase]; \
1033 for (; outX < renderer->end; ++outX) { \
1034 pixel = &renderer->row[outX]; \
1035 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1036 } \
1037 } else { \
1038 int shift = end & 0x3; \
1039 int start = outX; \
1040 outX = renderer->end - 1; \
1041 if (end2 > 0) { \
1042 tileData = ((uint32_t*) vram)[charBase]; \
1043 tileData >>= 8 * shift; \
1044 for (; outX >= start + 4; --outX) { \
1045 pixel = &renderer->row[outX]; \
1046 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1047 } \
1048 shift = 0; \
1049 } \
1050 \
1051 tileData = ((uint32_t*) vram)[charBase + 1]; \
1052 tileData >>= 8 * shift; \
1053 for (; outX >= start; --outX) { \
1054 pixel = &renderer->row[outX]; \
1055 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1056 } \
1057 }
1058
1059#define DRAW_BACKGROUND_MODE_0_TILES_256(BLEND, OBJWIN) \
1060 for (; tileX < tileEnd; ++tileX) { \
1061 BACKGROUND_TEXT_SELECT_CHARACTER; \
1062 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1063 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1064 tileData = ((uint32_t*) vram)[charBase]; \
1065 if (tileData) { \
1066 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1067 ++pixel; \
1068 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1069 ++pixel; \
1070 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1071 ++pixel; \
1072 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1073 ++pixel; \
1074 } else { \
1075 pixel += 4; \
1076 } \
1077 tileData = ((uint32_t*) vram)[charBase + 1]; \
1078 if (tileData) { \
1079 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1080 ++pixel; \
1081 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1082 ++pixel; \
1083 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1084 ++pixel; \
1085 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1086 ++pixel; \
1087 } else { \
1088 pixel += 4; \
1089 } \
1090 } else { \
1091 uint32_t tileData = ((uint32_t*) vram)[charBase + 1]; \
1092 if (tileData) { \
1093 pixel += 3; \
1094 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1095 --pixel; \
1096 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1097 --pixel; \
1098 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1099 --pixel; \
1100 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1101 } \
1102 pixel += 4; \
1103 tileData = ((uint32_t*) vram)[charBase]; \
1104 if (tileData) { \
1105 pixel += 3; \
1106 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1107 --pixel; \
1108 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1109 --pixel; \
1110 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1111 --pixel; \
1112 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1113 } \
1114 pixel += 4; \
1115 } \
1116 }
1117
1118#define DRAW_BACKGROUND_MODE_0_MOSAIC_256(BLEND, OBJWIN) \
1119 for (; tileX < tileEnd; ++tileX) { \
1120 BACKGROUND_TEXT_SELECT_CHARACTER; \
1121 charBase = ((background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) >> 2) + (localY << 1); \
1122 tileData = carryData; \
1123 for (x = 0; x < 8; ++x) { \
1124 if (!mosaicWait) { \
1125 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1126 if (x >= 4) { \
1127 tileData = ((uint32_t*) vram)[charBase + 1]; \
1128 tileData >>= (x - 4) * 8; \
1129 } else { \
1130 tileData = ((uint32_t*) vram)[charBase]; \
1131 tileData >>= x * 8; \
1132 } \
1133 } else { \
1134 if (x >= 4) { \
1135 tileData = ((uint32_t*) vram)[charBase]; \
1136 tileData >>= (7 - x) * 8; \
1137 } else { \
1138 tileData = ((uint32_t*) vram)[charBase + 1]; \
1139 tileData >>= (3 - x) * 8; \
1140 } \
1141 } \
1142 tileData &= 0xFF; \
1143 carryData = tileData; \
1144 mosaicWait = mosaicH; \
1145 } \
1146 tileData |= tileData << 8; \
1147 --mosaicWait; \
1148 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1149 ++pixel; \
1150 } \
1151 }
1152
1153#define DRAW_BACKGROUND_MODE_0(BPP, BLEND, OBJWIN) \
1154 uint32_t* pixel = &renderer->row[outX]; \
1155 if (background->mosaic && renderer->mosaic.bgH) { \
1156 int mosaicH = renderer->mosaic.bgH + 1; \
1157 int x; \
1158 int mosaicWait = outX % mosaicH; \
1159 int carryData = 0; \
1160 paletteData = 0; /* Quiets compiler warning */ \
1161 DRAW_BACKGROUND_MODE_0_MOSAIC_ ## BPP (BLEND, OBJWIN) \
1162 return; \
1163 } \
1164 \
1165 if (inX & 0x7) { \
1166 int mod8 = inX & 0x7; \
1167 BACKGROUND_TEXT_SELECT_CHARACTER; \
1168 \
1169 int end = outX + 0x8 - mod8; \
1170 if (end > renderer->end) { \
1171 /* TODO: ensure tiles are properly aligned from this*/ \
1172 end = renderer->end; \
1173 } \
1174 if (end == outX) { \
1175 return; \
1176 } \
1177 DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_ ## BPP (BLEND, OBJWIN) \
1178 } \
1179 if (inX & 0x7 || (renderer->end - renderer->start) & 0x7) { \
1180 tileX = tileEnd; \
1181 int pixelData; \
1182 int mod8 = (inX + renderer->end - renderer->start) & 0x7; \
1183 BACKGROUND_TEXT_SELECT_CHARACTER; \
1184 \
1185 int end = 0x8 - mod8; \
1186 UNUSED(end); \
1187 DRAW_BACKGROUND_MODE_0_TILE_PREFIX_ ## BPP (BLEND, OBJWIN) \
1188 \
1189 tileX = (inX & 0x7) != 0; \
1190 outX = renderer->start + tileX * 8 - (inX & 0x7); \
1191 } \
1192 \
1193 pixel = &renderer->row[outX]; \
1194 DRAW_BACKGROUND_MODE_0_TILES_ ## BPP (BLEND, OBJWIN)
1195
1196static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y) {
1197 int inX = renderer->start + background->x;
1198 if (background->mosaic) {
1199 int mosaicV = renderer->mosaic.bgV + 1;
1200 y -= y % mosaicV;
1201 }
1202 int inY = y + background->y;
1203 uint16_t mapData;
1204
1205 unsigned yBase = inY & 0xF8;
1206 if (background->size == 2) {
1207 yBase += inY & 0x100;
1208 } else if (background->size == 3) {
1209 yBase += (inY & 0x100) << 1;
1210 }
1211 yBase = (background->screenBase >> 1) + (yBase << 2);
1212
1213 int localX;
1214 int localY;
1215
1216 unsigned xBase;
1217
1218 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND;
1219 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA);
1220 flags |= FLAG_TARGET_2 * background->target2;
1221
1222 uint32_t screenBase;
1223 uint32_t charBase;
1224 int variant = background->target1 && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1225 color_t* mainPalette = renderer->normalPalette;
1226 if (variant) {
1227 mainPalette = renderer->variantPalette;
1228 }
1229 color_t* palette = mainPalette;
1230 PREPARE_OBJWIN;
1231
1232 int outX = renderer->start;
1233
1234 uint32_t tileData;
1235 uint32_t current;
1236 int pixelData;
1237 int paletteData;
1238 int tileX = 0;
1239 int tileEnd = (renderer->end - renderer->start + (inX & 0x7)) >> 3;
1240 uint16_t* vram = renderer->d.vram;
1241
1242 if (!objwinSlowPath) {
1243 if (!(flags & FLAG_TARGET_2)) {
1244 if (!background->multipalette) {
1245 DRAW_BACKGROUND_MODE_0(16, NoBlend, NO_OBJWIN);
1246 } else {
1247 DRAW_BACKGROUND_MODE_0(256, NoBlend, NO_OBJWIN);
1248 }
1249 } else {
1250 if (!background->multipalette) {
1251 DRAW_BACKGROUND_MODE_0(16, Blend, NO_OBJWIN);
1252 } else {
1253 DRAW_BACKGROUND_MODE_0(256, Blend, NO_OBJWIN);
1254 }
1255 }
1256 } else {
1257 if (!(flags & FLAG_TARGET_2)) {
1258 if (!background->multipalette) {
1259 DRAW_BACKGROUND_MODE_0(16, NoBlend, OBJWIN);
1260 } else {
1261 DRAW_BACKGROUND_MODE_0(256, NoBlend, OBJWIN);
1262 }
1263 } else {
1264 if (!background->multipalette) {
1265 DRAW_BACKGROUND_MODE_0(16, Blend, OBJWIN);
1266 } else {
1267 DRAW_BACKGROUND_MODE_0(256, Blend, OBJWIN);
1268 }
1269 }
1270 }
1271}
1272
1273#define BACKGROUND_BITMAP_INIT \
1274 UNUSED(unused); \
1275 int32_t x = background->sx + (renderer->start - 1) * background->dx; \
1276 int32_t y = background->sy + (renderer->start - 1) * background->dy; \
1277 int32_t localX; \
1278 int32_t localY; \
1279 \
1280 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND; \
1281 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA); \
1282 flags |= FLAG_TARGET_2 * background->target2; \
1283 int variant = background->target1 && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN); \
1284 color_t* palette = renderer->normalPalette; \
1285 if (variant) { \
1286 palette = renderer->variantPalette; \
1287 } \
1288 PREPARE_OBJWIN;
1289
1290#define BACKGROUND_BITMAP_ITERATE(W, H) \
1291 x += background->dx; \
1292 y += background->dy; \
1293 \
1294 if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
1295 continue; \
1296 } else { \
1297 localX = x; \
1298 localY = y; \
1299 }
1300
1301static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1302 int sizeAdjusted = 0x8000 << background->size;
1303
1304 BACKGROUND_BITMAP_INIT;
1305
1306 uint32_t screenBase = background->screenBase;
1307 uint32_t charBase = background->charBase;
1308 uint8_t mapData;
1309 uint8_t tileData;
1310
1311 int outX;
1312 uint32_t* pixel;
1313 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1314 x += background->dx;
1315 y += background->dy;
1316
1317 if (background->overflow) {
1318 localX = x & (sizeAdjusted - 1);
1319 localY = y & (sizeAdjusted - 1);
1320 } else if ((x | y) & ~(sizeAdjusted - 1)) {
1321 continue;
1322 } else {
1323 localX = x;
1324 localY = y;
1325 }
1326 mapData = ((uint8_t*)renderer->d.vram)[screenBase + (localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)];
1327 tileData = ((uint8_t*)renderer->d.vram)[charBase + (mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)];
1328
1329 uint32_t current = *pixel;
1330 if (tileData && IS_WRITABLE(current)) {
1331 if (!objwinSlowPath) {
1332 _compositeBlendNoObjwin(renderer, pixel, palette[tileData] | flags, current);
1333 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1334 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1335 _compositeBlendObjwin(renderer, pixel, currentPalette[tileData] | flags, current);
1336 }
1337 }
1338 }
1339}
1340
1341static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1342 BACKGROUND_BITMAP_INIT;
1343
1344 uint32_t color;
1345
1346 int outX;
1347 uint32_t* pixel;
1348 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1349 BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
1350
1351 color = ((uint16_t*)renderer->d.vram)[(localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
1352#ifndef COLOR_16_BIT
1353 unsigned color32;
1354 color32 = 0;
1355 color32 |= (color << 3) & 0xF8;
1356 color32 |= (color << 6) & 0xF800;
1357 color32 |= (color << 9) & 0xF80000;
1358 color = color32;
1359#endif
1360
1361 uint32_t current = *pixel;
1362 if (!objwinSlowPath || !(current & FLAG_OBJWIN) != objwinOnly) {
1363 if (!variant) {
1364 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1365 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
1366 _compositeBlendObjwin(renderer, pixel, _brighten(color, renderer->bldy) | flags, current);
1367 } else if (renderer->blendEffect == BLEND_DARKEN) {
1368 _compositeBlendObjwin(renderer, pixel, _darken(color, renderer->bldy) | flags, current);
1369 }
1370 }
1371 }
1372}
1373
1374static void _drawBackgroundMode4(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1375 BACKGROUND_BITMAP_INIT;
1376
1377 uint16_t color;
1378 uint32_t offset = 0;
1379 if (GBARegisterDISPCNTIsFrameSelect(renderer->dispcnt)) {
1380 offset = 0xA000;
1381 }
1382
1383 int outX;
1384 uint32_t* pixel;
1385 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1386 BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
1387
1388 color = ((uint8_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
1389
1390 uint32_t current = *pixel;
1391 if (color && IS_WRITABLE(current)) {
1392 if (!objwinSlowPath) {
1393 _compositeBlendNoObjwin(renderer, pixel, palette[color] | flags, current);
1394 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1395 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1396 _compositeBlendObjwin(renderer, pixel, currentPalette[color] | flags, current);
1397 }
1398 }
1399 }
1400}
1401
1402static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int unused) {
1403 BACKGROUND_BITMAP_INIT;
1404
1405 uint32_t color;
1406 uint32_t offset = 0;
1407 if (GBARegisterDISPCNTIsFrameSelect(renderer->dispcnt)) {
1408 offset = 0xA000;
1409 }
1410
1411 int outX;
1412 uint32_t* pixel;
1413 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1414 BACKGROUND_BITMAP_ITERATE(160, 128);
1415
1416 color = ((uint16_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * 160];
1417#ifndef COLOR_16_BIT
1418 unsigned color32 = 0;
1419 color32 |= (color << 9) & 0xF80000;
1420 color32 |= (color << 3) & 0xF8;
1421 color32 |= (color << 6) & 0xF800;
1422 color = color32;
1423#endif
1424
1425 uint32_t current = *pixel;
1426 if (!objwinSlowPath || !(current & FLAG_OBJWIN) != objwinOnly) {
1427 if (!variant) {
1428 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1429 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
1430 _compositeBlendObjwin(renderer, pixel, _brighten(color, renderer->bldy) | flags, current);
1431 } else if (renderer->blendEffect == BLEND_DARKEN) {
1432 _compositeBlendObjwin(renderer, pixel, _darken(color, renderer->bldy) | flags, current);
1433 }
1434 }
1435 }
1436}
1437
1438#define SPRITE_NORMAL_LOOP(DEPTH, TYPE) \
1439 SPRITE_YBASE_ ## DEPTH(inY); \
1440 for (; outX < condition; ++outX, inX += xOffset) { \
1441 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1442 continue; \
1443 } \
1444 SPRITE_XBASE_ ## DEPTH(inX); \
1445 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(inX); \
1446 }
1447
1448#define SPRITE_MOSAIC_LOOP(DEPTH, TYPE) \
1449 SPRITE_YBASE_ ## DEPTH(inY); \
1450 if (outX % mosaicH) { \
1451 inX += (mosaicH - (outX % mosaicH)) * xOffset; \
1452 outX += mosaicH - (outX % mosaicH); \
1453 } \
1454 for (; outX < condition; ++outX, inX += xOffset) { \
1455 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1456 continue; \
1457 } \
1458 int localX = inX - xOffset * (outX % mosaicH); \
1459 SPRITE_XBASE_ ## DEPTH(localX); \
1460 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1461 }
1462
1463#define SPRITE_TRANSFORMED_LOOP(DEPTH, TYPE) \
1464 int outX; \
1465 for (outX = x >= start ? x : start; outX < x + totalWidth && outX < end; ++outX) { \
1466 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1467 continue; \
1468 } \
1469 int inX = outX - x; \
1470 int localX = ((mat->a * (inX - (totalWidth >> 1)) + mat->b * (inY - (totalHeight >> 1))) >> 8) + (width >> 1); \
1471 int localY = ((mat->c * (inX - (totalWidth >> 1)) + mat->d * (inY - (totalHeight >> 1))) >> 8) + (height >> 1); \
1472 \
1473 if (localX < 0 || localX >= width || localY < 0 || localY >= height) { \
1474 continue; \
1475 } \
1476 \
1477 SPRITE_YBASE_ ## DEPTH(localY); \
1478 SPRITE_XBASE_ ## DEPTH(localX); \
1479 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1480 }
1481
1482#define SPRITE_XBASE_16(localX) unsigned xBase = (localX & ~0x7) * 4 + ((localX >> 1) & 2);
1483#define SPRITE_YBASE_16(localY) unsigned yBase = (localY & ~0x7) * (GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width >> 1 : 0x80) + (localY & 0x7) * 4;
1484
1485#define SPRITE_DRAW_PIXEL_16_NORMAL(localX) \
1486 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1487 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1488 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1489 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1490 }
1491
1492#define SPRITE_DRAW_PIXEL_16_OBJWIN(localX) \
1493 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1494 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1495 if (tileData) { \
1496 renderer->row[outX] |= FLAG_OBJWIN; \
1497 }
1498
1499#define SPRITE_XBASE_256(localX) unsigned xBase = (localX & ~0x7) * 8 + (localX & 6);
1500#define SPRITE_YBASE_256(localY) unsigned yBase = (localY & ~0x7) * (GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width : 0x80) + (localY & 0x7) * 8;
1501
1502#define SPRITE_DRAW_PIXEL_256_NORMAL(localX) \
1503 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1504 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1505 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1506 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1507 }
1508
1509#define SPRITE_DRAW_PIXEL_256_OBJWIN(localX) \
1510 unsigned tileData = vramBase[((yBase + charBase + xBase) & 0x7FFF) >> 1]; \
1511 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1512 if (tileData) { \
1513 renderer->row[outX] |= FLAG_OBJWIN; \
1514 }
1515
1516static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) {
1517 int width = _objSizes[sprite->shape * 8 + sprite->size * 2];
1518 int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1];
1519 int start = renderer->start;
1520 int end = renderer->end;
1521 uint32_t flags = sprite->priority << OFFSET_PRIORITY;
1522 flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT);
1523 flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN);
1524 int x = sprite->x;
1525 uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
1526 unsigned charBase = sprite->tile * 0x20;
1527 int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1528 if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
1529 // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
1530 variant = 0;
1531 }
1532 color_t* palette = &renderer->normalPalette[0x100];
1533 if (variant) {
1534 palette = &renderer->variantPalette[0x100];
1535 }
1536
1537 int outX = x >= start ? x : start;
1538 int condition = x + width;
1539 int mosaicH = 1;
1540 if (sprite->mosaic) {
1541 mosaicH = renderer->mosaic.objH + 1;
1542 if (condition % mosaicH) {
1543 condition += mosaicH - (condition % mosaicH);
1544 }
1545 }
1546 int inY = y - sprite->y;
1547 if (sprite->y + height - 256 >= 0) {
1548 inY += 256;
1549 }
1550 if (sprite->vflip) {
1551 inY = height - inY - 1;
1552 }
1553 if (end < condition) {
1554 condition = end;
1555 }
1556 int inX = outX - x;
1557 int xOffset = 1;
1558 if (sprite->hflip) {
1559 inX = width - inX - 1;
1560 xOffset = -1;
1561 }
1562 if (!sprite->multipalette) {
1563 palette = &palette[sprite->palette << 4];
1564 if (flags & FLAG_OBJWIN) {
1565 SPRITE_NORMAL_LOOP(16, OBJWIN);
1566 } else if (sprite->mosaic) {
1567 SPRITE_MOSAIC_LOOP(16, NORMAL);
1568 } else {
1569 SPRITE_NORMAL_LOOP(16, NORMAL);
1570 }
1571 } else {
1572 if (flags & FLAG_OBJWIN) {
1573 SPRITE_NORMAL_LOOP(256, OBJWIN);
1574 } else if (sprite->mosaic) {
1575 SPRITE_MOSAIC_LOOP(256, NORMAL);
1576 } else {
1577 SPRITE_NORMAL_LOOP(256, NORMAL);
1578 }
1579 }
1580 return 1;
1581}
1582
1583static int _preprocessTransformedSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBATransformedObj* sprite, int y) {
1584 int width = _objSizes[sprite->shape * 8 + sprite->size * 2];
1585 int height = _objSizes[sprite->shape * 8 + sprite->size * 2 + 1];
1586 int totalWidth = width << sprite->doublesize;
1587 int totalHeight = height << sprite->doublesize;
1588 int start = renderer->start;
1589 int end = renderer->end;
1590 uint32_t flags = sprite->priority << OFFSET_PRIORITY;
1591 flags |= FLAG_TARGET_1 * ((renderer->currentWindow.blendEnable && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || sprite->mode == OBJ_MODE_SEMITRANSPARENT);
1592 flags |= FLAG_OBJWIN * (sprite->mode == OBJ_MODE_OBJWIN);
1593 int x = sprite->x;
1594 uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
1595 unsigned charBase = sprite->tile * 0x20;
1596 struct GBAOAMMatrix* mat = &renderer->d.oam->mat[sprite->matIndex];
1597 int variant = renderer->target1Obj && renderer->currentWindow.blendEnable && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1598 if (sprite->mode == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
1599 // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
1600 variant = 0;
1601 }
1602 color_t* palette = &renderer->normalPalette[0x100];
1603 if (variant) {
1604 palette = &renderer->variantPalette[0x100];
1605 }
1606 int inY = y - sprite->y;
1607 if (inY < 0) {
1608 inY += 256;
1609 }
1610 if (!sprite->multipalette) {
1611 palette = &palette[sprite->palette << 4];
1612 if (flags & FLAG_OBJWIN) {
1613 SPRITE_TRANSFORMED_LOOP(16, OBJWIN);
1614 } else {
1615 SPRITE_TRANSFORMED_LOOP(16, NORMAL);
1616 }
1617 } else {
1618 if (flags & FLAG_OBJWIN) {
1619 SPRITE_TRANSFORMED_LOOP(256, OBJWIN);
1620 } else {
1621 SPRITE_TRANSFORMED_LOOP(256, NORMAL);
1622 }
1623 }
1624 return 1;
1625}
1626
1627static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority) {
1628 int x;
1629 uint32_t* pixel = renderer->row;
1630 uint32_t flags = FLAG_TARGET_2 * renderer->target2Obj;
1631
1632 int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt);
1633 int objwinDisable = 0;
1634 if (objwinSlowPath) {
1635 objwinDisable = !renderer->objwin.objEnable;
1636 }
1637 if (objwinSlowPath && objwinDisable) {
1638 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1639 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1640 uint32_t current = *pixel;
1641 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && !(current & FLAG_OBJWIN) && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1642 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1643 }
1644 }
1645 } else {
1646 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1647 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1648 uint32_t current = *pixel;
1649 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1650 _compositeBlendNoObjwin(renderer, pixel, color | flags, current);
1651 }
1652 }
1653 }
1654}
1655
1656static void _updatePalettes(struct GBAVideoSoftwareRenderer* renderer) {
1657 int i;
1658 if (renderer->blendEffect == BLEND_BRIGHTEN) {
1659 for (i = 0; i < 512; ++i) {
1660 renderer->variantPalette[i] = _brighten(renderer->normalPalette[i], renderer->bldy);
1661 }
1662 } else if (renderer->blendEffect == BLEND_DARKEN) {
1663 for (i = 0; i < 512; ++i) {
1664 renderer->variantPalette[i] = _darken(renderer->normalPalette[i], renderer->bldy);
1665 }
1666 } else {
1667 for (i = 0; i < 512; ++i) {
1668 renderer->variantPalette[i] = renderer->normalPalette[i];
1669 }
1670 }
1671}
1672
1673static inline unsigned _brighten(unsigned color, int y) {
1674 unsigned c = 0;
1675 unsigned a;
1676#ifdef COLOR_16_BIT
1677 a = color & 0x1F;
1678 c |= (a + ((0x1F - a) * y) / 16) & 0x1F;
1679
1680#ifdef COLOR_5_6_5
1681 a = color & 0x7C0;
1682 c |= (a + ((0x7C0 - a) * y) / 16) & 0x7C0;
1683
1684 a = color & 0xF800;
1685 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1686#else
1687 a = color & 0x3E0;
1688 c |= (a + ((0x3E0 - a) * y) / 16) & 0x3E0;
1689
1690 a = color & 0x7C00;
1691 c |= (a + ((0x7C00 - a) * y) / 16) & 0x7C00;
1692#endif
1693#else
1694 a = color & 0xF8;
1695 c |= (a + ((0xF8 - a) * y) / 16) & 0xF8;
1696
1697 a = color & 0xF800;
1698 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1699
1700 a = color & 0xF80000;
1701 c |= (a + ((0xF80000 - a) * y) / 16) & 0xF80000;
1702#endif
1703 return c;
1704}
1705
1706static inline unsigned _darken(unsigned color, int y) {
1707 unsigned c = 0;
1708 unsigned a;
1709#ifdef COLOR_16_BIT
1710 a = color & 0x1F;
1711 c |= (a - (a * y) / 16) & 0x1F;
1712
1713#ifdef COLOR_5_6_5
1714 a = color & 0x7C0;
1715 c |= (a - (a * y) / 16) & 0x7C0;
1716
1717 a = color & 0xF800;
1718 c |= (a - (a * y) / 16) & 0xF800;
1719#else
1720 a = color & 0x3E0;
1721 c |= (a - (a * y) / 16) & 0x3E0;
1722
1723 a = color & 0x7C00;
1724 c |= (a - (a * y) / 16) & 0x7C00;
1725#endif
1726#else
1727 a = color & 0xF8;
1728 c |= (a - (a * y) / 16) & 0xF8;
1729
1730 a = color & 0xF800;
1731 c |= (a - (a * y) / 16) & 0xF800;
1732
1733 a = color & 0xF80000;
1734 c |= (a - (a * y) / 16) & 0xF80000;
1735#endif
1736 return c;
1737}
1738
1739static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB) {
1740 unsigned c = 0;
1741 unsigned a, b;
1742#ifdef COLOR_16_BIT
1743#ifdef COLOR_5_6_5
1744 a = colorA & 0xF81F;
1745 b = colorB & 0xF81F;
1746 a |= (colorA & 0x7C0) << 16;
1747 b |= (colorB & 0x7C0) << 16;
1748 c = ((a * weightA + b * weightB) / 16);
1749 if (c & 0x08000000) {
1750 c = (c & ~0x0FC00000) | 0x07C00000;
1751 }
1752 if (c & 0x0020) {
1753 c = (c & ~0x003F) | 0x001F;
1754 }
1755 if (c & 0x10000) {
1756 c = (c & ~0x1F800) | 0xF800;
1757 }
1758 c = (c & 0xF81F) | ((c >> 16) & 0x07C0);
1759#else
1760 a = colorA & 0x7C1F;
1761 b = colorB & 0x7C1F;
1762 a |= (colorA & 0x3E0) << 16;
1763 b |= (colorB & 0x3E0) << 16;
1764 c = ((a * weightA + b * weightB) / 16);
1765 if (c & 0x04000000) {
1766 c = (c & ~0x07E00000) | 0x03E00000;
1767 }
1768 if (c & 0x0020) {
1769 c = (c & ~0x003F) | 0x001F;
1770 }
1771 if (c & 0x10000) {
1772 c = (c & ~0x1F800) | 0xF800;
1773 }
1774 c = (c & 0x7C1F) | ((c >> 16) & 0x03E0);
1775#endif
1776#else
1777 a = colorA & 0xF8;
1778 b = colorB & 0xF8;
1779 c |= ((a * weightA + b * weightB) / 16) & 0x1F8;
1780 if (c & 0x00000100) {
1781 c = 0x000000F8;
1782 }
1783
1784 a = colorA & 0xF800;
1785 b = colorB & 0xF800;
1786 c |= ((a * weightA + b * weightB) / 16) & 0x1F800;
1787 if (c & 0x00010000) {
1788 c = (c & 0x000000F8) | 0x0000F800;
1789 }
1790
1791 a = colorA & 0xF80000;
1792 b = colorB & 0xF80000;
1793 c |= ((a * weightA + b * weightB) / 16) & 0x1F80000;
1794 if (c & 0x01000000) {
1795 c = (c & 0x0000F8F8) | 0x00F80000;
1796 }
1797#endif
1798 return c;
1799}