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 _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y);
55static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority);
56
57static void _updatePalettes(struct GBAVideoSoftwareRenderer* renderer);
58static inline unsigned _brighten(unsigned color, int y);
59static inline unsigned _darken(unsigned color, int y);
60static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB);
61
62void GBAVideoSoftwareRendererCreate(struct GBAVideoSoftwareRenderer* renderer) {
63 renderer->d.init = GBAVideoSoftwareRendererInit;
64 renderer->d.reset = GBAVideoSoftwareRendererInit;
65 renderer->d.deinit = GBAVideoSoftwareRendererDeinit;
66 renderer->d.writeVideoRegister = GBAVideoSoftwareRendererWriteVideoRegister;
67 renderer->d.writeOAM = GBAVideoSoftwareRendererWriteOAM;
68 renderer->d.writePalette = GBAVideoSoftwareRendererWritePalette;
69 renderer->d.drawScanline = GBAVideoSoftwareRendererDrawScanline;
70 renderer->d.finishFrame = GBAVideoSoftwareRendererFinishFrame;
71 renderer->d.getPixels = GBAVideoSoftwareRendererGetPixels;
72 renderer->d.putPixels = GBAVideoSoftwareRendererPutPixels;
73}
74
75static void GBAVideoSoftwareRendererInit(struct GBAVideoRenderer* renderer) {
76 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
77 int i;
78
79 softwareRenderer->dispcnt = 0x0080;
80
81 softwareRenderer->target1Obj = 0;
82 softwareRenderer->target1Bd = 0;
83 softwareRenderer->target2Obj = 0;
84 softwareRenderer->target2Bd = 0;
85 softwareRenderer->blendEffect = BLEND_NONE;
86 memset(softwareRenderer->normalPalette, 0, sizeof(softwareRenderer->normalPalette));
87 memset(softwareRenderer->variantPalette, 0, sizeof(softwareRenderer->variantPalette));
88
89 softwareRenderer->blda = 0;
90 softwareRenderer->bldb = 0;
91 softwareRenderer->bldy = 0;
92
93 softwareRenderer->winN[0] = (struct WindowN) { .control = { .priority = 0 } };
94 softwareRenderer->winN[1] = (struct WindowN) { .control = { .priority = 1 } };
95 softwareRenderer->objwin = (struct WindowControl) { .priority = 2 };
96 softwareRenderer->winout = (struct WindowControl) { .priority = 3 };
97 softwareRenderer->oamMax = 0;
98
99 softwareRenderer->mosaic = 0;
100
101 for (i = 0; i < 4; ++i) {
102 struct GBAVideoSoftwareBackground* bg = &softwareRenderer->bg[i];
103 bg->index = i;
104 bg->enabled = 0;
105 bg->priority = 0;
106 bg->charBase = 0;
107 bg->mosaic = 0;
108 bg->multipalette = 0;
109 bg->screenBase = 0;
110 bg->overflow = 0;
111 bg->size = 0;
112 bg->target1 = 0;
113 bg->target2 = 0;
114 bg->x = 0;
115 bg->y = 0;
116 bg->refx = 0;
117 bg->refy = 0;
118 bg->dx = 256;
119 bg->dmx = 0;
120 bg->dy = 0;
121 bg->dmy = 256;
122 bg->sx = 0;
123 bg->sy = 0;
124 }
125}
126
127static void GBAVideoSoftwareRendererDeinit(struct GBAVideoRenderer* renderer) {
128 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
129 UNUSED(softwareRenderer);
130}
131
132static uint16_t GBAVideoSoftwareRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
133 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
134 switch (address) {
135 case REG_DISPCNT:
136 softwareRenderer->dispcnt = value;
137 GBAVideoSoftwareRendererUpdateDISPCNT(softwareRenderer);
138 break;
139 case REG_BG0CNT:
140 value &= 0xFFCF;
141 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[0], value);
142 break;
143 case REG_BG1CNT:
144 value &= 0xFFCF;
145 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[1], value);
146 break;
147 case REG_BG2CNT:
148 value &= 0xFFCF;
149 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[2], value);
150 break;
151 case REG_BG3CNT:
152 value &= 0xFFCF;
153 GBAVideoSoftwareRendererWriteBGCNT(softwareRenderer, &softwareRenderer->bg[3], value);
154 break;
155 case REG_BG0HOFS:
156 value &= 0x01FF;
157 softwareRenderer->bg[0].x = value;
158 break;
159 case REG_BG0VOFS:
160 value &= 0x01FF;
161 softwareRenderer->bg[0].y = value;
162 break;
163 case REG_BG1HOFS:
164 value &= 0x01FF;
165 softwareRenderer->bg[1].x = value;
166 break;
167 case REG_BG1VOFS:
168 value &= 0x01FF;
169 softwareRenderer->bg[1].y = value;
170 break;
171 case REG_BG2HOFS:
172 value &= 0x01FF;
173 softwareRenderer->bg[2].x = value;
174 break;
175 case REG_BG2VOFS:
176 value &= 0x01FF;
177 softwareRenderer->bg[2].y = value;
178 break;
179 case REG_BG3HOFS:
180 value &= 0x01FF;
181 softwareRenderer->bg[3].x = value;
182 break;
183 case REG_BG3VOFS:
184 value &= 0x01FF;
185 softwareRenderer->bg[3].y = value;
186 break;
187 case REG_BG2PA:
188 GBAVideoSoftwareRendererWriteBGPA(&softwareRenderer->bg[2], value);
189 break;
190 case REG_BG2PB:
191 GBAVideoSoftwareRendererWriteBGPB(&softwareRenderer->bg[2], value);
192 break;
193 case REG_BG2PC:
194 GBAVideoSoftwareRendererWriteBGPC(&softwareRenderer->bg[2], value);
195 break;
196 case REG_BG2PD:
197 GBAVideoSoftwareRendererWriteBGPD(&softwareRenderer->bg[2], value);
198 break;
199 case REG_BG2X_LO:
200 GBAVideoSoftwareRendererWriteBGX_LO(&softwareRenderer->bg[2], value);
201 break;
202 case REG_BG2X_HI:
203 GBAVideoSoftwareRendererWriteBGX_HI(&softwareRenderer->bg[2], value);
204 break;
205 case REG_BG2Y_LO:
206 GBAVideoSoftwareRendererWriteBGY_LO(&softwareRenderer->bg[2], value);
207 break;
208 case REG_BG2Y_HI:
209 GBAVideoSoftwareRendererWriteBGY_HI(&softwareRenderer->bg[2], value);
210 break;
211 case REG_BG3PA:
212 GBAVideoSoftwareRendererWriteBGPA(&softwareRenderer->bg[3], value);
213 break;
214 case REG_BG3PB:
215 GBAVideoSoftwareRendererWriteBGPB(&softwareRenderer->bg[3], value);
216 break;
217 case REG_BG3PC:
218 GBAVideoSoftwareRendererWriteBGPC(&softwareRenderer->bg[3], value);
219 break;
220 case REG_BG3PD:
221 GBAVideoSoftwareRendererWriteBGPD(&softwareRenderer->bg[3], value);
222 break;
223 case REG_BG3X_LO:
224 GBAVideoSoftwareRendererWriteBGX_LO(&softwareRenderer->bg[3], value);
225 break;
226 case REG_BG3X_HI:
227 GBAVideoSoftwareRendererWriteBGX_HI(&softwareRenderer->bg[3], value);
228 break;
229 case REG_BG3Y_LO:
230 GBAVideoSoftwareRendererWriteBGY_LO(&softwareRenderer->bg[3], value);
231 break;
232 case REG_BG3Y_HI:
233 GBAVideoSoftwareRendererWriteBGY_HI(&softwareRenderer->bg[3], value);
234 break;
235 case REG_BLDCNT:
236 GBAVideoSoftwareRendererWriteBLDCNT(softwareRenderer, value);
237 break;
238 case REG_BLDALPHA:
239 softwareRenderer->blda = value & 0x1F;
240 if (softwareRenderer->blda > 0x10) {
241 softwareRenderer->blda = 0x10;
242 }
243 softwareRenderer->bldb = (value >> 8) & 0x1F;
244 if (softwareRenderer->bldb > 0x10) {
245 softwareRenderer->bldb = 0x10;
246 }
247 break;
248 case REG_BLDY:
249 softwareRenderer->bldy = value & 0x1F;
250 if (softwareRenderer->bldy > 0x10) {
251 softwareRenderer->bldy = 0x10;
252 }
253 _updatePalettes(softwareRenderer);
254 break;
255 case REG_WIN0H:
256 softwareRenderer->winN[0].h.end = value;
257 softwareRenderer->winN[0].h.start = value >> 8;
258 if (softwareRenderer->winN[0].h.start > VIDEO_HORIZONTAL_PIXELS && softwareRenderer->winN[0].h.start > softwareRenderer->winN[0].h.end) {
259 softwareRenderer->winN[0].h.start = 0;
260 }
261 if (softwareRenderer->winN[0].h.start > softwareRenderer->winN[0].h.end || softwareRenderer->winN[0].h.end > VIDEO_HORIZONTAL_PIXELS) {
262 softwareRenderer->winN[0].h.end = VIDEO_HORIZONTAL_PIXELS;
263 }
264 break;
265 case REG_WIN1H:
266 softwareRenderer->winN[1].h.end = value;
267 softwareRenderer->winN[1].h.start = value >> 8;
268 if (softwareRenderer->winN[1].h.start > VIDEO_HORIZONTAL_PIXELS && softwareRenderer->winN[1].h.start > softwareRenderer->winN[1].h.end) {
269 softwareRenderer->winN[1].h.start = 0;
270 }
271 if (softwareRenderer->winN[1].h.start > softwareRenderer->winN[1].h.end || softwareRenderer->winN[1].h.end > VIDEO_HORIZONTAL_PIXELS) {
272 softwareRenderer->winN[1].h.end = VIDEO_HORIZONTAL_PIXELS;
273 }
274 break;
275 case REG_WIN0V:
276 softwareRenderer->winN[0].v.end = value;
277 softwareRenderer->winN[0].v.start = value >> 8;
278 if (softwareRenderer->winN[0].v.start > VIDEO_VERTICAL_PIXELS && softwareRenderer->winN[0].v.start > softwareRenderer->winN[0].v.end) {
279 softwareRenderer->winN[0].v.start = 0;
280 }
281 if (softwareRenderer->winN[0].v.start > softwareRenderer->winN[0].v.end || softwareRenderer->winN[0].v.end > VIDEO_HORIZONTAL_PIXELS) {
282 softwareRenderer->winN[0].v.end = VIDEO_VERTICAL_PIXELS;
283 }
284 break;
285 case REG_WIN1V:
286 softwareRenderer->winN[1].v.end = value;
287 softwareRenderer->winN[1].v.start = value >> 8;
288 if (softwareRenderer->winN[1].v.start > VIDEO_VERTICAL_PIXELS && softwareRenderer->winN[1].v.start > softwareRenderer->winN[1].v.end) {
289 softwareRenderer->winN[1].v.start = 0;
290 }
291 if (softwareRenderer->winN[1].v.start > softwareRenderer->winN[1].v.end || softwareRenderer->winN[1].v.end > VIDEO_HORIZONTAL_PIXELS) {
292 softwareRenderer->winN[1].v.end = VIDEO_VERTICAL_PIXELS;
293 }
294 break;
295 case REG_WININ:
296 softwareRenderer->winN[0].control.packed = value;
297 softwareRenderer->winN[1].control.packed = value >> 8;
298 break;
299 case REG_WINOUT:
300 softwareRenderer->winout.packed = value;
301 softwareRenderer->objwin.packed = value >> 8;
302 break;
303 case REG_MOSAIC:
304 softwareRenderer->mosaic = value;
305 break;
306 case REG_GREENSWP:
307 GBALog(0, GBA_LOG_STUB, "Stub video register write: 0x%03X", address);
308 break;
309 default:
310 GBALog(0, GBA_LOG_GAME_ERROR, "Invalid video register: 0x%03X", address);
311 }
312 return value;
313}
314
315static void GBAVideoSoftwareRendererWriteOAM(struct GBAVideoRenderer* renderer, uint32_t oam) {
316 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
317 softwareRenderer->oamDirty = 1;
318 UNUSED(oam);
319}
320
321static void GBAVideoSoftwareRendererWritePalette(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
322 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
323#ifdef COLOR_16_BIT
324#ifdef COLOR_5_6_5
325 unsigned color = 0;
326 color |= (value & 0x001F) << 11;
327 color |= (value & 0x03E0) << 1;
328 color |= (value & 0x7C00) >> 10;
329#else
330 unsigned color = value;
331#endif
332#else
333 unsigned color = 0;
334 color |= (value << 3) & 0xF8;
335 color |= (value << 6) & 0xF800;
336 color |= (value << 9) & 0xF80000;
337#endif
338 softwareRenderer->normalPalette[address >> 1] = color;
339 if (softwareRenderer->blendEffect == BLEND_BRIGHTEN) {
340 softwareRenderer->variantPalette[address >> 1] = _brighten(color, softwareRenderer->bldy);
341 } else if (softwareRenderer->blendEffect == BLEND_DARKEN) {
342 softwareRenderer->variantPalette[address >> 1] = _darken(color, softwareRenderer->bldy);
343 }
344}
345
346static void _breakWindow(struct GBAVideoSoftwareRenderer* softwareRenderer, struct WindowN* win) {
347 int activeWindow;
348 int startX = 0;
349 if (win->h.end > 0) {
350 for (activeWindow = 0; activeWindow < softwareRenderer->nWindows; ++activeWindow) {
351 if (win->h.start < softwareRenderer->windows[activeWindow].endX) {
352 // Insert a window before the end of the active window
353 struct Window oldWindow = softwareRenderer->windows[activeWindow];
354 if (win->h.start > startX) {
355 // And after the start of the active window
356 int nextWindow = softwareRenderer->nWindows;
357 ++softwareRenderer->nWindows;
358 for (; nextWindow > activeWindow; --nextWindow) {
359 softwareRenderer->windows[nextWindow] = softwareRenderer->windows[nextWindow - 1];
360 }
361 softwareRenderer->windows[activeWindow].endX = win->h.start;
362 ++activeWindow;
363 }
364 softwareRenderer->windows[activeWindow].control = win->control;
365 softwareRenderer->windows[activeWindow].endX = win->h.end;
366 if (win->h.end >= oldWindow.endX) {
367 // Trim off extra windows we've overwritten
368 for (++activeWindow; softwareRenderer->nWindows > activeWindow + 1 && win->h.end >= softwareRenderer->windows[activeWindow].endX; ++activeWindow) {
369 softwareRenderer->windows[activeWindow] = softwareRenderer->windows[activeWindow + 1];
370 --softwareRenderer->nWindows;
371 }
372 } else {
373 ++activeWindow;
374 int nextWindow = softwareRenderer->nWindows;
375 ++softwareRenderer->nWindows;
376 for (; nextWindow > activeWindow; --nextWindow) {
377 softwareRenderer->windows[nextWindow] = softwareRenderer->windows[nextWindow - 1];
378 }
379 softwareRenderer->windows[activeWindow] = oldWindow;
380 }
381 break;
382 }
383 startX = softwareRenderer->windows[activeWindow].endX;
384 }
385 }
386}
387
388static void _cleanOAM(struct GBAVideoSoftwareRenderer* renderer) {
389 int i;
390 int oamMax = 0;
391 for (i = 0; i < 128; ++i) {
392 struct GBAObj obj;
393 LOAD_16(obj.a, 0, &renderer->d.oam->obj[i].a);
394 LOAD_16(obj.b, 0, &renderer->d.oam->obj[i].b);
395 LOAD_16(obj.c, 0, &renderer->d.oam->obj[i].c);
396 if (GBAObjAttributesAIsTransformed(obj.a) || !GBAObjAttributesAIsDisable(obj.a)) {
397 int height = _objSizes[GBAObjAttributesAGetShape(obj.a) * 8 + GBAObjAttributesBGetSize(obj.b) * 2 + 1];
398 if (GBAObjAttributesAIsTransformed(obj.a)) {
399 height <<= GBAObjAttributesAGetDoubleSize(obj.a);
400 }
401 if (GBAObjAttributesAGetY(obj.a) < VIDEO_VERTICAL_PIXELS || GBAObjAttributesAGetY(obj.a) + height >= VIDEO_VERTICAL_TOTAL_PIXELS) {
402 renderer->sprites[oamMax].y = GBAObjAttributesAGetY(obj.a);
403 renderer->sprites[oamMax].endY = GBAObjAttributesAGetY(obj.a) + height;
404 renderer->sprites[oamMax].obj = obj;
405 ++oamMax;
406 }
407 }
408 }
409 renderer->oamMax = oamMax;
410 renderer->oamDirty = 0;
411}
412
413
414static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
415 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
416
417 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y];
418 if (GBARegisterDISPCNTIsForcedBlank(softwareRenderer->dispcnt)) {
419 int x;
420 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x) {
421 row[x] = GBA_COLOR_WHITE;
422 }
423 return;
424 }
425
426 int x;
427 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; x += 4) {
428 softwareRenderer->spriteLayer[x] = FLAG_UNWRITTEN;
429 softwareRenderer->spriteLayer[x + 1] = FLAG_UNWRITTEN;
430 softwareRenderer->spriteLayer[x + 2] = FLAG_UNWRITTEN;
431 softwareRenderer->spriteLayer[x + 3] = FLAG_UNWRITTEN;
432 }
433
434 softwareRenderer->windows[0].endX = VIDEO_HORIZONTAL_PIXELS;
435 softwareRenderer->nWindows = 1;
436 if (GBARegisterDISPCNTIsWin0Enable(softwareRenderer->dispcnt) || GBARegisterDISPCNTIsWin1Enable(softwareRenderer->dispcnt) || GBARegisterDISPCNTIsObjwinEnable(softwareRenderer->dispcnt)) {
437 softwareRenderer->windows[0].control = softwareRenderer->winout;
438 if (GBARegisterDISPCNTIsWin1Enable(softwareRenderer->dispcnt) && y < softwareRenderer->winN[1].v.end && y >= softwareRenderer->winN[1].v.start) {
439 _breakWindow(softwareRenderer, &softwareRenderer->winN[1]);
440 }
441 if (GBARegisterDISPCNTIsWin0Enable(softwareRenderer->dispcnt) && y < softwareRenderer->winN[0].v.end && y >= softwareRenderer->winN[0].v.start) {
442 _breakWindow(softwareRenderer, &softwareRenderer->winN[0]);
443 }
444 } else {
445 softwareRenderer->windows[0].control.packed = 0xFF;
446 }
447
448 int w;
449 x = 0;
450 for (w = 0; w < softwareRenderer->nWindows; ++w) {
451 // TOOD: handle objwin on backdrop
452 uint32_t backdrop = FLAG_UNWRITTEN | FLAG_PRIORITY | FLAG_IS_BACKGROUND;
453 if (!softwareRenderer->target1Bd || softwareRenderer->blendEffect == BLEND_NONE || softwareRenderer->blendEffect == BLEND_ALPHA || !GBAWindowControlIsBlendEnable(softwareRenderer->windows[w].control.packed)) {
454 backdrop |= softwareRenderer->normalPalette[0];
455 } else {
456 backdrop |= softwareRenderer->variantPalette[0];
457 }
458 int end = softwareRenderer->windows[w].endX;
459 for (; x < end; ++x) {
460 softwareRenderer->row[x] = backdrop;
461 }
462 }
463
464 _drawScanline(softwareRenderer, y);
465
466 if (softwareRenderer->target2Bd) {
467 x = 0;
468 for (w = 0; w < softwareRenderer->nWindows; ++w) {
469 uint32_t backdrop = FLAG_UNWRITTEN;
470 if (!softwareRenderer->target1Bd || softwareRenderer->blendEffect == BLEND_NONE || softwareRenderer->blendEffect == BLEND_ALPHA || !GBAWindowControlIsBlendEnable(softwareRenderer->windows[w].control.packed)) {
471 backdrop |= softwareRenderer->normalPalette[0];
472 } else {
473 backdrop |= softwareRenderer->variantPalette[0];
474 }
475 int end = softwareRenderer->windows[w].endX;
476 for (; x < end; ++x) {
477 uint32_t color = softwareRenderer->row[x];
478 if (color & FLAG_TARGET_1) {
479 softwareRenderer->row[x] = _mix(softwareRenderer->bldb, backdrop, softwareRenderer->blda, color);
480 }
481 }
482 }
483 }
484
485#ifdef COLOR_16_BIT
486#ifdef __arm__
487 _to16Bit(row, softwareRenderer->row, VIDEO_HORIZONTAL_PIXELS);
488#else
489 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x) {
490 row[x] = softwareRenderer->row[x];
491 }
492#endif
493#else
494 memcpy(row, softwareRenderer->row, VIDEO_HORIZONTAL_PIXELS * sizeof(*row));
495#endif
496}
497
498static void GBAVideoSoftwareRendererFinishFrame(struct GBAVideoRenderer* renderer) {
499 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
500
501 softwareRenderer->bg[2].sx = softwareRenderer->bg[2].refx;
502 softwareRenderer->bg[2].sy = softwareRenderer->bg[2].refy;
503 softwareRenderer->bg[3].sx = softwareRenderer->bg[3].refx;
504 softwareRenderer->bg[3].sy = softwareRenderer->bg[3].refy;
505}
506
507static void GBAVideoSoftwareRendererGetPixels(struct GBAVideoRenderer* renderer, unsigned* stride, void** pixels) {
508 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
509
510 *stride = softwareRenderer->outputBufferStride;
511 *pixels = softwareRenderer->outputBuffer;
512}
513
514static void GBAVideoSoftwareRendererPutPixels(struct GBAVideoRenderer* renderer, unsigned stride, void* pixels) {
515 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
516
517 uint32_t* colorPixels = pixels;
518 unsigned i;
519 for (i = 0; i < VIDEO_VERTICAL_PIXELS; ++i) {
520 memmove(&softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * i], &colorPixels[stride * i], VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL);
521 }
522}
523
524static void GBAVideoSoftwareRendererUpdateDISPCNT(struct GBAVideoSoftwareRenderer* renderer) {
525 renderer->bg[0].enabled = GBARegisterDISPCNTGetBg0Enable(renderer->dispcnt);
526 renderer->bg[1].enabled = GBARegisterDISPCNTGetBg1Enable(renderer->dispcnt);
527 renderer->bg[2].enabled = GBARegisterDISPCNTGetBg2Enable(renderer->dispcnt);
528 renderer->bg[3].enabled = GBARegisterDISPCNTGetBg3Enable(renderer->dispcnt);
529}
530
531static void GBAVideoSoftwareRendererWriteBGCNT(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* bg, uint16_t value) {
532 UNUSED(renderer);
533 bg->priority = GBARegisterBGCNTGetPriority(value);
534 bg->charBase = GBARegisterBGCNTGetCharBase(value) << 14;
535 bg->mosaic = GBARegisterBGCNTGetMosaic(value);
536 bg->multipalette = GBARegisterBGCNTGet256Color(value);
537 bg->screenBase = GBARegisterBGCNTGetScreenBase(value) << 11;
538 bg->overflow = GBARegisterBGCNTGetOverflow(value);
539 bg->size = GBARegisterBGCNTGetSize(value);
540}
541
542static void GBAVideoSoftwareRendererWriteBGPA(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
543 bg->dx = value;
544}
545
546static void GBAVideoSoftwareRendererWriteBGPB(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
547 bg->dmx = value;
548}
549
550static void GBAVideoSoftwareRendererWriteBGPC(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
551 bg->dy = value;
552}
553
554static void GBAVideoSoftwareRendererWriteBGPD(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
555 bg->dmy = value;
556}
557
558static void GBAVideoSoftwareRendererWriteBGX_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
559 bg->refx = (bg->refx & 0xFFFF0000) | value;
560 bg->sx = bg->refx;
561}
562
563static void GBAVideoSoftwareRendererWriteBGX_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
564 bg->refx = (bg->refx & 0x0000FFFF) | (value << 16);
565 bg->refx <<= 4;
566 bg->refx >>= 4;
567 bg->sx = bg->refx;
568}
569
570static void GBAVideoSoftwareRendererWriteBGY_LO(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
571 bg->refy = (bg->refy & 0xFFFF0000) | value;
572 bg->sy = bg->refy;
573}
574
575static void GBAVideoSoftwareRendererWriteBGY_HI(struct GBAVideoSoftwareBackground* bg, uint16_t value) {
576 bg->refy = (bg->refy & 0x0000FFFF) | (value << 16);
577 bg->refy <<= 4;
578 bg->refy >>= 4;
579 bg->sy = bg->refy;
580}
581
582static void GBAVideoSoftwareRendererWriteBLDCNT(struct GBAVideoSoftwareRenderer* renderer, uint16_t value) {
583 enum BlendEffect oldEffect = renderer->blendEffect;
584
585 renderer->bg[0].target1 = GBARegisterBLDCNTGetTarget1Bg0(value);
586 renderer->bg[1].target1 = GBARegisterBLDCNTGetTarget1Bg1(value);
587 renderer->bg[2].target1 = GBARegisterBLDCNTGetTarget1Bg2(value);
588 renderer->bg[3].target1 = GBARegisterBLDCNTGetTarget1Bg3(value);
589 renderer->bg[0].target2 = GBARegisterBLDCNTGetTarget2Bg0(value);
590 renderer->bg[1].target2 = GBARegisterBLDCNTGetTarget2Bg1(value);
591 renderer->bg[2].target2 = GBARegisterBLDCNTGetTarget2Bg2(value);
592 renderer->bg[3].target2 = GBARegisterBLDCNTGetTarget2Bg3(value);
593
594 renderer->blendEffect = GBARegisterBLDCNTGetEffect(value);
595 renderer->target1Obj = GBARegisterBLDCNTGetTarget1Obj(value);
596 renderer->target1Bd = GBARegisterBLDCNTGetTarget1Bd(value);
597 renderer->target2Obj = GBARegisterBLDCNTGetTarget2Obj(value);
598 renderer->target2Bd = GBARegisterBLDCNTGetTarget2Bd(value);
599
600 renderer->anyTarget2 = value & 0x3F00;
601
602 if (oldEffect != renderer->blendEffect) {
603 _updatePalettes(renderer);
604 }
605}
606
607#define TEST_LAYER_ENABLED(X) \
608 (renderer->bg[X].enabled && \
609 (GBAWindowControlIsBg ## X ## Enable(renderer->currentWindow.packed) || \
610 (GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt) && GBAWindowControlIsBg ## X ## Enable (renderer->objwin.packed))) && \
611 renderer->bg[X].priority == priority)
612
613static void _drawScanline(struct GBAVideoSoftwareRenderer* renderer, int y) {
614 int w;
615 renderer->end = 0;
616 int spriteLayers = 0;
617 if (GBARegisterDISPCNTIsObjEnable(renderer->dispcnt)) {
618 if (renderer->oamDirty) {
619 _cleanOAM(renderer);
620 }
621 int mosaicV = GBAMosaicControlGetObjV(renderer->mosaic) + 1;
622 int mosaicY = y - (y % mosaicV);
623 for (w = 0; w < renderer->nWindows; ++w) {
624 renderer->start = renderer->end;
625 renderer->end = renderer->windows[w].endX;
626 renderer->currentWindow = renderer->windows[w].control;
627 if (!GBAWindowControlIsObjEnable(renderer->currentWindow.packed) && !GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt)) {
628 continue;
629 }
630 int i;
631 int drawn;
632 for (i = 0; i < renderer->oamMax; ++i) {
633 int localY = y;
634 struct GBAVideoSoftwareSprite* sprite = &renderer->sprites[i];
635 if (GBAObjAttributesAIsMosaic(sprite->obj.a)) {
636 localY = mosaicY;
637 }
638 if ((localY < sprite->y && (sprite->endY - 256 < 0 || localY >= sprite->endY - 256)) || localY >= sprite->endY) {
639 continue;
640 }
641 drawn = _preprocessSprite(renderer, &sprite->obj, localY);
642 spriteLayers |= drawn << GBAObjAttributesCGetPriority(sprite->obj.c);
643 }
644 }
645 }
646
647 int priority;
648 for (priority = 0; priority < 4; ++priority) {
649 if (spriteLayers & (1 << priority)) {
650 _postprocessSprite(renderer, priority);
651 }
652 renderer->end = 0;
653 for (w = 0; w < renderer->nWindows; ++w) {
654 renderer->start = renderer->end;
655 renderer->end = renderer->windows[w].endX;
656 renderer->currentWindow = renderer->windows[w].control;
657 if (TEST_LAYER_ENABLED(0) && GBARegisterDISPCNTGetMode(renderer->dispcnt) < 2) {
658 _drawBackgroundMode0(renderer, &renderer->bg[0], y);
659 }
660 if (TEST_LAYER_ENABLED(1) && GBARegisterDISPCNTGetMode(renderer->dispcnt) < 2) {
661 _drawBackgroundMode0(renderer, &renderer->bg[1], y);
662 }
663 if (TEST_LAYER_ENABLED(2)) {
664 switch (GBARegisterDISPCNTGetMode(renderer->dispcnt)) {
665 case 0:
666 _drawBackgroundMode0(renderer, &renderer->bg[2], y);
667 break;
668 case 1:
669 case 2:
670 _drawBackgroundMode2(renderer, &renderer->bg[2], y);
671 break;
672 case 3:
673 _drawBackgroundMode3(renderer, &renderer->bg[2], y);
674 break;
675 case 4:
676 _drawBackgroundMode4(renderer, &renderer->bg[2], y);
677 break;
678 case 5:
679 _drawBackgroundMode5(renderer, &renderer->bg[2], y);
680 break;
681 }
682 }
683 if (TEST_LAYER_ENABLED(3)) {
684 switch (GBARegisterDISPCNTGetMode(renderer->dispcnt)) {
685 case 0:
686 _drawBackgroundMode0(renderer, &renderer->bg[3], y);
687 break;
688 case 2:
689 _drawBackgroundMode2(renderer, &renderer->bg[3], y);
690 break;
691 }
692 }
693 }
694 }
695 renderer->bg[2].sx += renderer->bg[2].dmx;
696 renderer->bg[2].sy += renderer->bg[2].dmy;
697 renderer->bg[3].sx += renderer->bg[3].dmx;
698 renderer->bg[3].sy += renderer->bg[3].dmy;
699}
700
701// We stash the priority on the top bits so we can do a one-operator comparison
702// The lower the number, the higher the priority, and sprites take precendence over backgrounds
703// We want to do special processing if the color pixel is target 1, however
704
705static inline void _compositeBlendObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
706 if (color >= current) {
707 if (current & FLAG_TARGET_1 && color & FLAG_TARGET_2) {
708 color = _mix(renderer->blda, current, renderer->bldb, color);
709 } else {
710 color = current & 0x00FFFFFF;
711 }
712 } else {
713 color = (color & ~FLAG_TARGET_2) | (current & FLAG_OBJWIN);
714 }
715 *pixel = color;
716}
717
718static inline void _compositeBlendNoObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
719 // We stash the priority on the top bits so we can do a one-operator comparison
720 // The lower the number, the higher the priority, and sprites take precendence over backgrounds
721 // We want to do special processing if the color pixel is target 1, however
722 if (color >= current) {
723 if (current & FLAG_TARGET_1 && color & FLAG_TARGET_2) {
724 color = _mix(renderer->blda, current, renderer->bldb, color);
725 } else {
726 color = current & 0x00FFFFFF;
727 }
728 } else {
729 color = color & ~FLAG_TARGET_2;
730 }
731 *pixel = color;
732}
733
734static inline void _compositeNoBlendObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
735 UNUSED(renderer);
736 if (color < current) {
737 *pixel = color | (current & FLAG_OBJWIN);
738 }
739}
740
741static inline void _compositeNoBlendNoObjwin(struct GBAVideoSoftwareRenderer* renderer, uint32_t* pixel, uint32_t color, uint32_t current) {
742 UNUSED(renderer);
743 if (color < current) {
744 *pixel = color;
745 }
746}
747
748#define COMPOSITE_16_OBJWIN(BLEND) \
749 if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) { \
750 unsigned color = (current & FLAG_OBJWIN) ? objwinPalette[paletteData | pixelData] : palette[pixelData]; \
751 _composite ## BLEND ## Objwin(renderer, pixel, color | flags, current); \
752 }
753
754#define COMPOSITE_16_NO_OBJWIN(BLEND) \
755 _composite ## BLEND ## NoObjwin(renderer, pixel, palette[pixelData] | flags, current);
756
757#define COMPOSITE_256_OBJWIN(BLEND) \
758 if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) { \
759 unsigned color = (current & FLAG_OBJWIN) ? objwinPalette[pixelData] : palette[pixelData]; \
760 _composite ## BLEND ## Objwin(renderer, pixel, color | flags, current); \
761 }
762
763#define COMPOSITE_256_NO_OBJWIN(BLEND) \
764 COMPOSITE_16_NO_OBJWIN(BLEND)
765
766#define BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN) \
767 pixelData = tileData & 0xF; \
768 current = *pixel; \
769 if (pixelData && IS_WRITABLE(current)) { \
770 COMPOSITE_16_ ## OBJWIN (BLEND); \
771 } \
772 tileData >>= 4;
773
774#define BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN) \
775 pixelData = tileData & 0xFF; \
776 current = *pixel; \
777 if (pixelData && IS_WRITABLE(current)) { \
778 COMPOSITE_256_ ## OBJWIN (BLEND); \
779 } \
780 tileData >>= 8;
781
782#define BACKGROUND_TEXT_SELECT_CHARACTER \
783 localX = tileX * 8 + inX; \
784 xBase = localX & 0xF8; \
785 if (background->size & 1) { \
786 xBase += (localX & 0x100) << 5; \
787 } \
788 screenBase = yBase + (xBase >> 3); \
789 LOAD_16(mapData, screenBase << 1, vram); \
790 localY = inY & 0x7; \
791 if (GBA_TEXT_MAP_VFLIP(mapData)) { \
792 localY = 7 - localY; \
793 }
794
795#define PREPARE_OBJWIN \
796 int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt); \
797 int objwinOnly = 0; \
798 int objwinForceEnable = 0; \
799 color_t* objwinPalette; \
800 if (objwinSlowPath) { \
801 if (background->target1 && GBAWindowControlIsBlendEnable(renderer->objwin.packed) && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN)) { \
802 objwinPalette = renderer->variantPalette; \
803 } else { \
804 objwinPalette = renderer->normalPalette; \
805 } \
806 switch (background->index) { \
807 case 0: \
808 objwinForceEnable = GBAWindowControlIsBg0Enable(renderer->objwin.packed) && GBAWindowControlIsBg0Enable(renderer->currentWindow.packed); \
809 objwinOnly = !GBAWindowControlIsBg0Enable(renderer->objwin.packed); \
810 break; \
811 case 1: \
812 objwinForceEnable = GBAWindowControlIsBg1Enable(renderer->objwin.packed) && GBAWindowControlIsBg1Enable(renderer->currentWindow.packed); \
813 objwinOnly = !GBAWindowControlIsBg1Enable(renderer->objwin.packed); \
814 break; \
815 case 2: \
816 objwinForceEnable = GBAWindowControlIsBg2Enable(renderer->objwin.packed) && GBAWindowControlIsBg2Enable(renderer->currentWindow.packed); \
817 objwinOnly = !GBAWindowControlIsBg2Enable(renderer->objwin.packed); \
818 break; \
819 case 3: \
820 objwinForceEnable = GBAWindowControlIsBg3Enable(renderer->objwin.packed) && GBAWindowControlIsBg3Enable(renderer->currentWindow.packed); \
821 objwinOnly = !GBAWindowControlIsBg3Enable(renderer->objwin.packed); \
822 break; \
823 } \
824 }
825
826#define DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_16(BLEND, OBJWIN) \
827 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
828 palette = &mainPalette[paletteData]; \
829 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) + (localY << 2); \
830 LOAD_32(tileData, charBase, vram); \
831 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
832 tileData >>= 4 * mod8; \
833 for (; outX < end; ++outX) { \
834 uint32_t* pixel = &renderer->row[outX]; \
835 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
836 } \
837 } else { \
838 for (outX = end - 1; outX >= renderer->start; --outX) { \
839 uint32_t* pixel = &renderer->row[outX]; \
840 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
841 } \
842 }
843
844#define DRAW_BACKGROUND_MODE_0_TILE_PREFIX_16(BLEND, OBJWIN) \
845 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) + (localY << 2); \
846 LOAD_32(tileData, charBase, vram); \
847 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
848 palette = &mainPalette[paletteData]; \
849 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
850 outX = renderer->end - mod8; \
851 if (outX < renderer->start) { \
852 tileData >>= 4 * (renderer->start - outX); \
853 outX = renderer->start; \
854 } \
855 for (; outX < renderer->end; ++outX) { \
856 uint32_t* pixel = &renderer->row[outX]; \
857 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
858 } \
859 } else { \
860 tileData >>= 4 * (0x8 - mod8); \
861 int end2 = renderer->end - 8; \
862 if (end2 < -1) { \
863 end2 = -1; \
864 } \
865 for (outX = renderer->end - 1; outX > end2; --outX) { \
866 uint32_t* pixel = &renderer->row[outX]; \
867 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
868 } \
869 }
870
871#define DRAW_BACKGROUND_MODE_0_MOSAIC_16(BLEND, OBJWIN) \
872 for (; tileX < tileEnd; ++tileX) { \
873 BACKGROUND_TEXT_SELECT_CHARACTER; \
874 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) + (localY << 2); \
875 tileData = carryData; \
876 for (x = 0; x < 8; ++x) { \
877 if (!mosaicWait) { \
878 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
879 palette = &mainPalette[paletteData]; \
880 LOAD_32(tileData, charBase, vram); \
881 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
882 tileData >>= x * 4; \
883 } else { \
884 tileData >>= (7 - x) * 4; \
885 } \
886 tileData &= 0xF; \
887 tileData |= tileData << 4; \
888 tileData |= tileData << 8; \
889 tileData |= tileData << 12; \
890 tileData |= tileData << 16; \
891 tileData |= tileData << 20; \
892 tileData |= tileData << 24; \
893 tileData |= tileData << 28; \
894 carryData = tileData; \
895 mosaicWait = mosaicH; \
896 } \
897 --mosaicWait; \
898 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
899 ++pixel; \
900 } \
901 }
902
903#define DRAW_BACKGROUND_MODE_0_TILES_16(BLEND, OBJWIN) \
904 for (; tileX < tileEnd; ++tileX) { \
905 BACKGROUND_TEXT_SELECT_CHARACTER; \
906 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 4; \
907 palette = &mainPalette[paletteData]; \
908 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 5)) + (localY << 2); \
909 LOAD_32(tileData, charBase, vram); \
910 if (tileData) { \
911 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
912 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
913 ++pixel; \
914 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
915 ++pixel; \
916 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
917 ++pixel; \
918 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
919 ++pixel; \
920 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
921 ++pixel; \
922 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
923 ++pixel; \
924 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
925 ++pixel; \
926 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
927 ++pixel; \
928 } else { \
929 pixel += 7; \
930 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
931 --pixel; \
932 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
933 --pixel; \
934 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
935 --pixel; \
936 BACKGROUND_DRAW_PIXEL_16(BLEND, OBJWIN); \
937 --pixel; \
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 += 8; \
946 } \
947 } else { \
948 pixel += 8; \
949 } \
950 }
951
952#define DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_256(BLEND, OBJWIN) \
953 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + (localY << 3); \
954 int end2 = end - 4; \
955 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
956 int shift = inX & 0x3; \
957 if (end2 > outX) { \
958 LOAD_32(tileData, charBase, vram); \
959 tileData >>= 8 * shift; \
960 shift = 0; \
961 for (; outX < end2; ++outX) { \
962 pixel = &renderer->row[outX]; \
963 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
964 } \
965 } \
966 \
967 LOAD_32(tileData, charBase + 4, vram); \
968 tileData >>= 8 * shift; \
969 for (; outX < end; ++outX) { \
970 pixel = &renderer->row[outX]; \
971 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
972 } \
973 } else { \
974 int start = outX; \
975 outX = end - 1; \
976 if (end2 > start) { \
977 LOAD_32(tileData, charBase, vram); \
978 for (; outX >= end2; --outX) { \
979 pixel = &renderer->row[outX]; \
980 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
981 } \
982 charBase += 4; \
983 } \
984 \
985 LOAD_32(tileData, charBase, vram); \
986 for (; outX >= renderer->start; --outX) { \
987 pixel = &renderer->row[outX]; \
988 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
989 } \
990 outX = end; \
991 }
992
993#define DRAW_BACKGROUND_MODE_0_TILE_PREFIX_256(BLEND, OBJWIN) \
994 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + (localY << 3); \
995 outX = renderer->end - 8 + end; \
996 int end2 = 4 - end; \
997 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
998 if (end2 > 0) { \
999 LOAD_32(tileData, charBase, vram); \
1000 for (; outX < renderer->end - end2; ++outX) { \
1001 pixel = &renderer->row[outX]; \
1002 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1003 } \
1004 charBase += 4; \
1005 } \
1006 \
1007 LOAD_32(tileData, charBase, vram); \
1008 for (; outX < renderer->end; ++outX) { \
1009 pixel = &renderer->row[outX]; \
1010 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1011 } \
1012 } else { \
1013 int shift = end & 0x3; \
1014 int start = outX; \
1015 outX = renderer->end - 1; \
1016 if (end2 > 0) { \
1017 LOAD_32(tileData, charBase, vram); \
1018 tileData >>= 8 * shift; \
1019 for (; outX >= start + 4; --outX) { \
1020 pixel = &renderer->row[outX]; \
1021 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1022 } \
1023 shift = 0; \
1024 } \
1025 \
1026 LOAD_32(tileData, charBase + 4, vram); \
1027 tileData >>= 8 * shift; \
1028 for (; outX >= start; --outX) { \
1029 pixel = &renderer->row[outX]; \
1030 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1031 } \
1032 }
1033
1034#define DRAW_BACKGROUND_MODE_0_TILES_256(BLEND, OBJWIN) \
1035 for (; tileX < tileEnd; ++tileX) { \
1036 BACKGROUND_TEXT_SELECT_CHARACTER; \
1037 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + (localY << 3); \
1038 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1039 LOAD_32(tileData, charBase, vram); \
1040 if (tileData) { \
1041 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1042 ++pixel; \
1043 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1044 ++pixel; \
1045 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1046 ++pixel; \
1047 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1048 ++pixel; \
1049 } else { \
1050 pixel += 4; \
1051 } \
1052 LOAD_32(tileData, charBase + 4, vram); \
1053 if (tileData) { \
1054 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1055 ++pixel; \
1056 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1057 ++pixel; \
1058 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1059 ++pixel; \
1060 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1061 ++pixel; \
1062 } else { \
1063 pixel += 4; \
1064 } \
1065 } else { \
1066 LOAD_32(tileData, charBase + 4, vram); \
1067 if (tileData) { \
1068 pixel += 3; \
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 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1076 } \
1077 pixel += 4; \
1078 LOAD_32(tileData, charBase, vram); \
1079 if (tileData) { \
1080 pixel += 3; \
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 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1088 } \
1089 pixel += 4; \
1090 } \
1091 }
1092
1093#define DRAW_BACKGROUND_MODE_0_MOSAIC_256(BLEND, OBJWIN) \
1094 for (; tileX < tileEnd; ++tileX) { \
1095 BACKGROUND_TEXT_SELECT_CHARACTER; \
1096 charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + (localY << 3); \
1097 tileData = carryData; \
1098 for (x = 0; x < 8; ++x) { \
1099 if (!mosaicWait) { \
1100 if (!GBA_TEXT_MAP_HFLIP(mapData)) { \
1101 if (x >= 4) { \
1102 LOAD_32(tileData, charBase + 4, vram); \
1103 tileData >>= (x - 4) * 8; \
1104 } else { \
1105 LOAD_32(tileData, charBase, vram); \
1106 tileData >>= x * 8; \
1107 } \
1108 } else { \
1109 if (x >= 4) { \
1110 LOAD_32(tileData, charBase, vram); \
1111 tileData >>= (7 - x) * 8; \
1112 } else { \
1113 LOAD_32(tileData, charBase + 4, vram); \
1114 tileData >>= (3 - x) * 8; \
1115 } \
1116 } \
1117 tileData &= 0xFF; \
1118 carryData = tileData; \
1119 mosaicWait = mosaicH; \
1120 } \
1121 tileData |= tileData << 8; \
1122 --mosaicWait; \
1123 BACKGROUND_DRAW_PIXEL_256(BLEND, OBJWIN); \
1124 ++pixel; \
1125 } \
1126 }
1127
1128#define DRAW_BACKGROUND_MODE_0(BPP, BLEND, OBJWIN) \
1129 uint32_t* pixel = &renderer->row[outX]; \
1130 if (background->mosaic && GBAMosaicControlGetBgH(renderer->mosaic)) { \
1131 int mosaicH = GBAMosaicControlGetBgH(renderer->mosaic) + 1; \
1132 int x; \
1133 int mosaicWait = outX % mosaicH; \
1134 int carryData = 0; \
1135 paletteData = 0; /* Quiets compiler warning */ \
1136 DRAW_BACKGROUND_MODE_0_MOSAIC_ ## BPP (BLEND, OBJWIN) \
1137 return; \
1138 } \
1139 \
1140 if (inX & 0x7) { \
1141 int mod8 = inX & 0x7; \
1142 BACKGROUND_TEXT_SELECT_CHARACTER; \
1143 \
1144 int end = outX + 0x8 - mod8; \
1145 if (end > renderer->end) { \
1146 /* TODO: ensure tiles are properly aligned from this*/ \
1147 end = renderer->end; \
1148 } \
1149 if (end == outX) { \
1150 return; \
1151 } \
1152 DRAW_BACKGROUND_MODE_0_TILE_SUFFIX_ ## BPP (BLEND, OBJWIN) \
1153 } \
1154 if (inX & 0x7 || (renderer->end - renderer->start) & 0x7) { \
1155 tileX = tileEnd; \
1156 int pixelData; \
1157 int mod8 = (inX + renderer->end - renderer->start) & 0x7; \
1158 BACKGROUND_TEXT_SELECT_CHARACTER; \
1159 \
1160 int end = 0x8 - mod8; \
1161 UNUSED(end); \
1162 DRAW_BACKGROUND_MODE_0_TILE_PREFIX_ ## BPP (BLEND, OBJWIN) \
1163 \
1164 tileX = (inX & 0x7) != 0; \
1165 outX = renderer->start + tileX * 8 - (inX & 0x7); \
1166 } \
1167 \
1168 pixel = &renderer->row[outX]; \
1169 DRAW_BACKGROUND_MODE_0_TILES_ ## BPP (BLEND, OBJWIN)
1170
1171static void _drawBackgroundMode0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int y) {
1172 int inX = renderer->start + background->x;
1173 if (background->mosaic) {
1174 int mosaicV = GBAMosaicControlGetBgV(renderer->mosaic) + 1;
1175 y -= y % mosaicV;
1176 }
1177 int inY = y + background->y;
1178 uint16_t mapData;
1179
1180 unsigned yBase = inY & 0xF8;
1181 if (background->size == 2) {
1182 yBase += inY & 0x100;
1183 } else if (background->size == 3) {
1184 yBase += (inY & 0x100) << 1;
1185 }
1186 yBase = (background->screenBase >> 1) + (yBase << 2);
1187
1188 int localX;
1189 int localY;
1190
1191 unsigned xBase;
1192
1193 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND;
1194 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA);
1195 flags |= FLAG_TARGET_2 * background->target2;
1196 if (renderer->blda == 0x10 && renderer->bldb == 0) {
1197 flags &= ~(FLAG_TARGET_1 | FLAG_TARGET_2);
1198 }
1199
1200 uint32_t screenBase;
1201 uint32_t charBase;
1202 int variant = background->target1 && GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1203 color_t* mainPalette = renderer->normalPalette;
1204 if (variant) {
1205 mainPalette = renderer->variantPalette;
1206 }
1207 color_t* palette = mainPalette;
1208 PREPARE_OBJWIN;
1209
1210 int outX = renderer->start;
1211
1212 uint32_t tileData;
1213 uint32_t current;
1214 int pixelData;
1215 int paletteData;
1216 int tileX = 0;
1217 int tileEnd = (renderer->end - renderer->start + (inX & 0x7)) >> 3;
1218 uint16_t* vram = renderer->d.vram;
1219
1220 if (!objwinSlowPath) {
1221 if (!(flags & FLAG_TARGET_2)) {
1222 if (!background->multipalette) {
1223 DRAW_BACKGROUND_MODE_0(16, NoBlend, NO_OBJWIN);
1224 } else {
1225 DRAW_BACKGROUND_MODE_0(256, NoBlend, NO_OBJWIN);
1226 }
1227 } else {
1228 if (!background->multipalette) {
1229 DRAW_BACKGROUND_MODE_0(16, Blend, NO_OBJWIN);
1230 } else {
1231 DRAW_BACKGROUND_MODE_0(256, Blend, NO_OBJWIN);
1232 }
1233 }
1234 } else {
1235 if (!(flags & FLAG_TARGET_2)) {
1236 if (!background->multipalette) {
1237 DRAW_BACKGROUND_MODE_0(16, NoBlend, OBJWIN);
1238 } else {
1239 DRAW_BACKGROUND_MODE_0(256, NoBlend, OBJWIN);
1240 }
1241 } else {
1242 if (!background->multipalette) {
1243 DRAW_BACKGROUND_MODE_0(16, Blend, OBJWIN);
1244 } else {
1245 DRAW_BACKGROUND_MODE_0(256, Blend, OBJWIN);
1246 }
1247 }
1248 }
1249}
1250
1251#define BACKGROUND_BITMAP_INIT \
1252 int32_t x = background->sx + (renderer->start - 1) * background->dx; \
1253 int32_t y = background->sy + (renderer->start - 1) * background->dy; \
1254 int mosaicH = 0; \
1255 int mosaicWait = 0; \
1256 if (background->mosaic) { \
1257 int mosaicV = GBAMosaicControlGetBgV(renderer->mosaic) + 1; \
1258 y -= (inY % mosaicV) * background->dmy; \
1259 x -= (inY % mosaicV) * background->dmx; \
1260 mosaicH = GBAMosaicControlGetBgH(renderer->mosaic); \
1261 mosaicWait = renderer->start % (mosaicH + 1); \
1262 } \
1263 int32_t localX; \
1264 int32_t localY; \
1265 \
1266 int flags = (background->priority << OFFSET_PRIORITY) | (background->index << OFFSET_INDEX) | FLAG_IS_BACKGROUND; \
1267 flags |= FLAG_TARGET_1 * (background->target1 && renderer->blendEffect == BLEND_ALPHA); \
1268 flags |= FLAG_TARGET_2 * background->target2; \
1269 if (renderer->blda == 0x10 && renderer->bldb == 0) { \
1270 flags &= ~(FLAG_TARGET_1 | FLAG_TARGET_2); \
1271 } \
1272 int variant = background->target1 && GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN); \
1273 color_t* palette = renderer->normalPalette; \
1274 if (variant) { \
1275 palette = renderer->variantPalette; \
1276 } \
1277 PREPARE_OBJWIN;
1278
1279#define BACKGROUND_BITMAP_ITERATE(W, H) \
1280 x += background->dx; \
1281 y += background->dy; \
1282 \
1283 if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
1284 continue; \
1285 } else { \
1286 localX = x; \
1287 localY = y; \
1288 }
1289
1290static void _drawBackgroundMode2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
1291 int sizeAdjusted = 0x8000 << background->size;
1292
1293 BACKGROUND_BITMAP_INIT;
1294
1295 uint32_t screenBase = background->screenBase;
1296 uint32_t charBase = background->charBase;
1297 uint8_t mapData;
1298 uint8_t tileData = 0;
1299
1300 int outX;
1301 uint32_t* pixel;
1302 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1303 x += background->dx;
1304 y += background->dy;
1305
1306 if (!mosaicWait) {
1307 if (background->overflow) {
1308 localX = x & (sizeAdjusted - 1);
1309 localY = y & (sizeAdjusted - 1);
1310 } else if ((x | y) & ~(sizeAdjusted - 1)) {
1311 continue;
1312 } else {
1313 localX = x;
1314 localY = y;
1315 }
1316 mapData = ((uint8_t*)renderer->d.vram)[screenBase + (localX >> 11) + (((localY >> 7) & 0x7F0) << background->size)];
1317 tileData = ((uint8_t*)renderer->d.vram)[charBase + (mapData << 6) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8)];
1318
1319 mosaicWait = mosaicH;
1320 } else {
1321 --mosaicWait;
1322 }
1323
1324 uint32_t current = *pixel;
1325 if (tileData && IS_WRITABLE(current)) {
1326 if (!objwinSlowPath) {
1327 _compositeBlendNoObjwin(renderer, pixel, palette[tileData] | flags, current);
1328 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1329 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1330 _compositeBlendObjwin(renderer, pixel, currentPalette[tileData] | flags, current);
1331 }
1332 }
1333 }
1334}
1335
1336static void _drawBackgroundMode3(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
1337 BACKGROUND_BITMAP_INIT;
1338
1339 uint32_t color = renderer->normalPalette[0];
1340
1341 int outX;
1342 uint32_t* pixel;
1343 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1344 BACKGROUND_BITMAP_ITERATE(VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
1345
1346 if (!mosaicWait) {
1347 LOAD_16(color, ((localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS) << 1, renderer->d.vram);
1348#ifndef COLOR_16_BIT
1349 unsigned color32;
1350 color32 = 0;
1351 color32 |= (color << 3) & 0xF8;
1352 color32 |= (color << 6) & 0xF800;
1353 color32 |= (color << 9) & 0xF80000;
1354 color = color32;
1355#endif
1356 mosaicWait = mosaicH;
1357 } else {
1358 --mosaicWait;
1359 }
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 inY) {
1375 BACKGROUND_BITMAP_INIT;
1376
1377 uint16_t color = renderer->normalPalette[0];
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 if (!mosaicWait) {
1389 color = ((uint8_t*)renderer->d.vram)[offset + (localX >> 8) + (localY >> 8) * VIDEO_HORIZONTAL_PIXELS];
1390
1391 mosaicWait = mosaicH;
1392 } else {
1393 --mosaicWait;
1394 }
1395
1396 uint32_t current = *pixel;
1397 if (color && IS_WRITABLE(current)) {
1398 if (!objwinSlowPath) {
1399 _compositeBlendNoObjwin(renderer, pixel, palette[color] | flags, current);
1400 } else if (objwinForceEnable || !(current & FLAG_OBJWIN) == objwinOnly) {
1401 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
1402 _compositeBlendObjwin(renderer, pixel, currentPalette[color] | flags, current);
1403 }
1404 }
1405 }
1406}
1407
1408static void _drawBackgroundMode5(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
1409 BACKGROUND_BITMAP_INIT;
1410
1411 uint32_t color = renderer->normalPalette[0];
1412 uint32_t offset = 0;
1413 if (GBARegisterDISPCNTIsFrameSelect(renderer->dispcnt)) {
1414 offset = 0xA000;
1415 }
1416
1417 int outX;
1418 uint32_t* pixel;
1419 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) {
1420 BACKGROUND_BITMAP_ITERATE(160, 128);
1421
1422 if (!mosaicWait) {
1423 LOAD_16(color, (offset + (localX >> 8) + (localY >> 8) * 160) << 1, renderer->d.vram);
1424#ifndef COLOR_16_BIT
1425 unsigned color32 = 0;
1426 color32 |= (color << 9) & 0xF80000;
1427 color32 |= (color << 3) & 0xF8;
1428 color32 |= (color << 6) & 0xF800;
1429 color = color32;
1430#endif
1431 mosaicWait = mosaicH;
1432 } else {
1433 --mosaicWait;
1434 }
1435
1436 uint32_t current = *pixel;
1437 if (!objwinSlowPath || !(current & FLAG_OBJWIN) != objwinOnly) {
1438 if (!variant) {
1439 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1440 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
1441 _compositeBlendObjwin(renderer, pixel, _brighten(color, renderer->bldy) | flags, current);
1442 } else if (renderer->blendEffect == BLEND_DARKEN) {
1443 _compositeBlendObjwin(renderer, pixel, _darken(color, renderer->bldy) | flags, current);
1444 }
1445 }
1446 }
1447}
1448
1449#define SPRITE_NORMAL_LOOP(DEPTH, TYPE) \
1450 SPRITE_YBASE_ ## DEPTH(inY); \
1451 unsigned tileData; \
1452 for (; outX < condition; ++outX, inX += xOffset) { \
1453 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1454 continue; \
1455 } \
1456 SPRITE_XBASE_ ## DEPTH(inX); \
1457 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(inX); \
1458 }
1459
1460#define SPRITE_MOSAIC_LOOP(DEPTH, TYPE) \
1461 SPRITE_YBASE_ ## DEPTH(inY); \
1462 unsigned tileData; \
1463 if (outX % mosaicH) { \
1464 inX += (mosaicH - (outX % mosaicH)) * xOffset; \
1465 outX += mosaicH - (outX % mosaicH); \
1466 } \
1467 for (; outX < condition; ++outX, inX += xOffset) { \
1468 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1469 continue; \
1470 } \
1471 int localX = inX - xOffset * (outX % mosaicH); \
1472 SPRITE_XBASE_ ## DEPTH(localX); \
1473 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1474 }
1475
1476#define SPRITE_TRANSFORMED_LOOP(DEPTH, TYPE) \
1477 unsigned tileData; \
1478 for (; outX < x + totalWidth && outX < end; ++outX, ++inX) { \
1479 if (!(renderer->row[outX] & FLAG_UNWRITTEN)) { \
1480 continue; \
1481 } \
1482 xAccum += mat.a; \
1483 yAccum += mat.c; \
1484 int localX = (xAccum >> 8) + (width >> 1); \
1485 int localY = (yAccum >> 8) + (height >> 1); \
1486 \
1487 if (localX < 0 || localX >= width || localY < 0 || localY >= height) { \
1488 continue; \
1489 } \
1490 \
1491 SPRITE_YBASE_ ## DEPTH(localY); \
1492 SPRITE_XBASE_ ## DEPTH(localX); \
1493 SPRITE_DRAW_PIXEL_ ## DEPTH ## _ ## TYPE(localX); \
1494 }
1495
1496#define SPRITE_XBASE_16(localX) unsigned xBase = (localX & ~0x7) * 4 + ((localX >> 1) & 2);
1497#define SPRITE_YBASE_16(localY) unsigned yBase = (localY & ~0x7) * (GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width >> 1 : 0x80) + (localY & 0x7) * 4;
1498
1499#define SPRITE_DRAW_PIXEL_16_NORMAL(localX) \
1500 LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFF), vramBase); \
1501 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1502 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1503 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1504 }
1505
1506#define SPRITE_DRAW_PIXEL_16_OBJWIN(localX) \
1507 LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFF), vramBase); \
1508 tileData = (tileData >> ((localX & 3) << 2)) & 0xF; \
1509 if (tileData) { \
1510 renderer->row[outX] |= FLAG_OBJWIN; \
1511 }
1512
1513#define SPRITE_XBASE_256(localX) unsigned xBase = (localX & ~0x7) * 8 + (localX & 6);
1514#define SPRITE_YBASE_256(localY) unsigned yBase = (localY & ~0x7) * (GBARegisterDISPCNTIsObjCharacterMapping(renderer->dispcnt) ? width : 0x80) + (localY & 0x7) * 8;
1515
1516#define SPRITE_DRAW_PIXEL_256_NORMAL(localX) \
1517 LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFF), vramBase); \
1518 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1519 if (tileData && (renderer->spriteLayer[outX] & FLAG_ORDER_MASK) > flags) { \
1520 renderer->spriteLayer[outX] = palette[tileData] | flags; \
1521 }
1522
1523#define SPRITE_DRAW_PIXEL_256_OBJWIN(localX) \
1524 LOAD_16(tileData, ((yBase + charBase + xBase) & 0x7FFF), vramBase); \
1525 tileData = (tileData >> ((localX & 1) << 3)) & 0xFF; \
1526 if (tileData) { \
1527 renderer->row[outX] |= FLAG_OBJWIN; \
1528 }
1529
1530static int _preprocessSprite(struct GBAVideoSoftwareRenderer* renderer, struct GBAObj* sprite, int y) {
1531 int width = _objSizes[GBAObjAttributesAGetShape(sprite->a) * 8 + GBAObjAttributesBGetSize(sprite->b) * 2];
1532 int height = _objSizes[GBAObjAttributesAGetShape(sprite->a) * 8 + GBAObjAttributesBGetSize(sprite->b) * 2 + 1];
1533 int start = renderer->start;
1534 int end = renderer->end;
1535 uint32_t flags = GBAObjAttributesCGetPriority(sprite->c) << OFFSET_PRIORITY;
1536 flags |= FLAG_TARGET_1 * ((GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) && renderer->target1Obj && renderer->blendEffect == BLEND_ALPHA) || GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT);
1537 flags |= FLAG_OBJWIN * (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_OBJWIN);
1538 int32_t x = GBAObjAttributesBGetX(sprite->b) << 23;
1539 x >>= 23;
1540 uint16_t* vramBase = &renderer->d.vram[BASE_TILE >> 1];
1541 unsigned charBase = GBAObjAttributesCGetTile(sprite->c) * 0x20;
1542 int variant = renderer->target1Obj && GBAWindowControlIsBlendEnable(renderer->currentWindow.packed) && (renderer->blendEffect == BLEND_BRIGHTEN || renderer->blendEffect == BLEND_DARKEN);
1543 if (GBAObjAttributesAGetMode(sprite->a) == OBJ_MODE_SEMITRANSPARENT && renderer->target2Bd) {
1544 // Hack: if a sprite is blended, then the variant palette is not used, but we don't know if it's blended in advance
1545 variant = 0;
1546 }
1547 color_t* palette = &renderer->normalPalette[0x100];
1548 if (variant) {
1549 palette = &renderer->variantPalette[0x100];
1550 }
1551
1552 int inY = y - (int) GBAObjAttributesAGetY(sprite->a);
1553
1554 if (GBAObjAttributesAIsTransformed(sprite->a)) {
1555 int totalWidth = width << GBAObjAttributesAGetDoubleSize(sprite->a);
1556 int totalHeight = height << GBAObjAttributesAGetDoubleSize(sprite->a);
1557 struct GBAOAMMatrix mat;
1558 LOAD_16(mat.a, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].a);
1559 LOAD_16(mat.b, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].b);
1560 LOAD_16(mat.c, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].c);
1561 LOAD_16(mat.d, 0, &renderer->d.oam->mat[GBAObjAttributesBGetMatIndex(sprite->b)].d);
1562
1563 if (inY < 0) {
1564 inY += 256;
1565 }
1566 int outX = x >= start ? x : start;
1567 int inX = outX - x;
1568 int xAccum = mat.a * (inX - 1 - (totalWidth >> 1)) + mat.b * (inY - (totalHeight >> 1));
1569 int yAccum = mat.c * (inX - 1 - (totalWidth >> 1)) + mat.d * (inY - (totalHeight >> 1));
1570
1571 if (!GBAObjAttributesAIs256Color(sprite->a)) {
1572 palette = &palette[GBAObjAttributesCGetPalette(sprite->c) << 4];
1573 if (flags & FLAG_OBJWIN) {
1574 SPRITE_TRANSFORMED_LOOP(16, OBJWIN);
1575 } else {
1576 SPRITE_TRANSFORMED_LOOP(16, NORMAL);
1577 }
1578 } else {
1579 if (flags & FLAG_OBJWIN) {
1580 SPRITE_TRANSFORMED_LOOP(256, OBJWIN);
1581 } else {
1582 SPRITE_TRANSFORMED_LOOP(256, NORMAL);
1583 }
1584 }
1585 } else {
1586 int outX = x >= start ? x : start;
1587 int condition = x + width;
1588 int mosaicH = 1;
1589 if (GBAObjAttributesAIsMosaic(sprite->a)) {
1590 mosaicH = GBAMosaicControlGetObjH(renderer->mosaic) + 1;
1591 if (condition % mosaicH) {
1592 condition += mosaicH - (condition % mosaicH);
1593 }
1594 }
1595 if ((int) GBAObjAttributesAGetY(sprite->a) + height - 256 >= 0) {
1596 inY += 256;
1597 }
1598 if (GBAObjAttributesBIsVFlip(sprite->b)) {
1599 inY = height - inY - 1;
1600 }
1601 if (end < condition) {
1602 condition = end;
1603 }
1604 int inX = outX - x;
1605 int xOffset = 1;
1606 if (GBAObjAttributesBIsHFlip(sprite->b)) {
1607 inX = width - inX - 1;
1608 xOffset = -1;
1609 }
1610 if (!GBAObjAttributesAIs256Color(sprite->a)) {
1611 palette = &palette[GBAObjAttributesCGetPalette(sprite->c) << 4];
1612 if (flags & FLAG_OBJWIN) {
1613 SPRITE_NORMAL_LOOP(16, OBJWIN);
1614 } else if (GBAObjAttributesAIsMosaic(sprite->a)) {
1615 SPRITE_MOSAIC_LOOP(16, NORMAL);
1616 } else {
1617 SPRITE_NORMAL_LOOP(16, NORMAL);
1618 }
1619 } else {
1620 if (flags & FLAG_OBJWIN) {
1621 SPRITE_NORMAL_LOOP(256, OBJWIN);
1622 } else if (GBAObjAttributesAIsMosaic(sprite->a)) {
1623 SPRITE_MOSAIC_LOOP(256, NORMAL);
1624 } else {
1625 SPRITE_NORMAL_LOOP(256, NORMAL);
1626 }
1627 }
1628 }
1629 return 1;
1630}
1631
1632static void _postprocessSprite(struct GBAVideoSoftwareRenderer* renderer, unsigned priority) {
1633 int x;
1634 uint32_t* pixel = renderer->row;
1635 uint32_t flags = FLAG_TARGET_2 * renderer->target2Obj;
1636
1637 int objwinSlowPath = GBARegisterDISPCNTIsObjwinEnable(renderer->dispcnt);
1638 bool objwinDisable = false;
1639 bool objwinOnly = false;
1640 if (objwinSlowPath) {
1641 objwinDisable = !GBAWindowControlIsObjEnable(renderer->objwin.packed);
1642 // TODO: Fix this for current window when WIN0/1 are enabled
1643 objwinOnly = !objwinDisable && !GBAWindowControlIsObjEnable(renderer->winout.packed);
1644 }
1645 if (objwinSlowPath) {
1646 if (objwinDisable) {
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 && !(current & FLAG_OBJWIN) && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1651 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1652 }
1653 }
1654 return;
1655 } else if (objwinOnly) {
1656 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1657 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1658 uint32_t current = *pixel;
1659 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (current & FLAG_OBJWIN) && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1660 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1661 }
1662 }
1663 return;
1664 } else {
1665 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1666 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1667 uint32_t current = *pixel;
1668 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1669 _compositeBlendObjwin(renderer, pixel, color | flags, current);
1670 }
1671 }
1672 return;
1673 }
1674 }
1675 for (x = 0; x < VIDEO_HORIZONTAL_PIXELS; ++x, ++pixel) {
1676 uint32_t color = renderer->spriteLayer[x] & ~FLAG_OBJWIN;
1677 uint32_t current = *pixel;
1678 if ((color & FLAG_UNWRITTEN) != FLAG_UNWRITTEN && (color & FLAG_PRIORITY) >> OFFSET_PRIORITY == priority) {
1679 _compositeBlendNoObjwin(renderer, pixel, color | flags, current);
1680 }
1681 }
1682}
1683
1684static void _updatePalettes(struct GBAVideoSoftwareRenderer* renderer) {
1685 int i;
1686 if (renderer->blendEffect == BLEND_BRIGHTEN) {
1687 for (i = 0; i < 512; ++i) {
1688 renderer->variantPalette[i] = _brighten(renderer->normalPalette[i], renderer->bldy);
1689 }
1690 } else if (renderer->blendEffect == BLEND_DARKEN) {
1691 for (i = 0; i < 512; ++i) {
1692 renderer->variantPalette[i] = _darken(renderer->normalPalette[i], renderer->bldy);
1693 }
1694 } else {
1695 for (i = 0; i < 512; ++i) {
1696 renderer->variantPalette[i] = renderer->normalPalette[i];
1697 }
1698 }
1699}
1700
1701static inline unsigned _brighten(unsigned color, int y) {
1702 unsigned c = 0;
1703 unsigned a;
1704#ifdef COLOR_16_BIT
1705 a = color & 0x1F;
1706 c |= (a + ((0x1F - a) * y) / 16) & 0x1F;
1707
1708#ifdef COLOR_5_6_5
1709 a = color & 0x7C0;
1710 c |= (a + ((0x7C0 - a) * y) / 16) & 0x7C0;
1711
1712 a = color & 0xF800;
1713 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1714#else
1715 a = color & 0x3E0;
1716 c |= (a + ((0x3E0 - a) * y) / 16) & 0x3E0;
1717
1718 a = color & 0x7C00;
1719 c |= (a + ((0x7C00 - a) * y) / 16) & 0x7C00;
1720#endif
1721#else
1722 a = color & 0xF8;
1723 c |= (a + ((0xF8 - a) * y) / 16) & 0xF8;
1724
1725 a = color & 0xF800;
1726 c |= (a + ((0xF800 - a) * y) / 16) & 0xF800;
1727
1728 a = color & 0xF80000;
1729 c |= (a + ((0xF80000 - a) * y) / 16) & 0xF80000;
1730#endif
1731 return c;
1732}
1733
1734static inline unsigned _darken(unsigned color, int y) {
1735 unsigned c = 0;
1736 unsigned a;
1737#ifdef COLOR_16_BIT
1738 a = color & 0x1F;
1739 c |= (a - (a * y) / 16) & 0x1F;
1740
1741#ifdef COLOR_5_6_5
1742 a = color & 0x7C0;
1743 c |= (a - (a * y) / 16) & 0x7C0;
1744
1745 a = color & 0xF800;
1746 c |= (a - (a * y) / 16) & 0xF800;
1747#else
1748 a = color & 0x3E0;
1749 c |= (a - (a * y) / 16) & 0x3E0;
1750
1751 a = color & 0x7C00;
1752 c |= (a - (a * y) / 16) & 0x7C00;
1753#endif
1754#else
1755 a = color & 0xF8;
1756 c |= (a - (a * y) / 16) & 0xF8;
1757
1758 a = color & 0xF800;
1759 c |= (a - (a * y) / 16) & 0xF800;
1760
1761 a = color & 0xF80000;
1762 c |= (a - (a * y) / 16) & 0xF80000;
1763#endif
1764 return c;
1765}
1766
1767static unsigned _mix(int weightA, unsigned colorA, int weightB, unsigned colorB) {
1768 unsigned c = 0;
1769 unsigned a, b;
1770#ifdef COLOR_16_BIT
1771#ifdef COLOR_5_6_5
1772 a = colorA & 0xF81F;
1773 b = colorB & 0xF81F;
1774 a |= (colorA & 0x7C0) << 16;
1775 b |= (colorB & 0x7C0) << 16;
1776 c = ((a * weightA + b * weightB) / 16);
1777 if (c & 0x08000000) {
1778 c = (c & ~0x0FC00000) | 0x07C00000;
1779 }
1780 if (c & 0x0020) {
1781 c = (c & ~0x003F) | 0x001F;
1782 }
1783 if (c & 0x10000) {
1784 c = (c & ~0x1F800) | 0xF800;
1785 }
1786 c = (c & 0xF81F) | ((c >> 16) & 0x07C0);
1787#else
1788 a = colorA & 0x7C1F;
1789 b = colorB & 0x7C1F;
1790 a |= (colorA & 0x3E0) << 16;
1791 b |= (colorB & 0x3E0) << 16;
1792 c = ((a * weightA + b * weightB) / 16);
1793 if (c & 0x04000000) {
1794 c = (c & ~0x07E00000) | 0x03E00000;
1795 }
1796 if (c & 0x0020) {
1797 c = (c & ~0x003F) | 0x001F;
1798 }
1799 if (c & 0x10000) {
1800 c = (c & ~0x1F800) | 0xF800;
1801 }
1802 c = (c & 0x7C1F) | ((c >> 16) & 0x03E0);
1803#endif
1804#else
1805 a = colorA & 0xF8;
1806 b = colorB & 0xF8;
1807 c |= ((a * weightA + b * weightB) / 16) & 0x1F8;
1808 if (c & 0x00000100) {
1809 c = 0x000000F8;
1810 }
1811
1812 a = colorA & 0xF800;
1813 b = colorB & 0xF800;
1814 c |= ((a * weightA + b * weightB) / 16) & 0x1F800;
1815 if (c & 0x00010000) {
1816 c = (c & 0x000000F8) | 0x0000F800;
1817 }
1818
1819 a = colorA & 0xF80000;
1820 b = colorB & 0xF80000;
1821 c |= ((a * weightA + b * weightB) / 16) & 0x1F80000;
1822 if (c & 0x01000000) {
1823 c = (c & 0x0000F8F8) | 0x00F80000;
1824 }
1825#endif
1826 return c;
1827}