src/ds/renderers/software.c (view raw)
1/* Copyright (c) 2013-2017 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include <mgba/internal/ds/renderers/software.h>
7#include "gba/renderers/software-private.h"
8
9#include <mgba/internal/arm/macros.h>
10#include <mgba/internal/ds/gx.h>
11#include <mgba/internal/ds/io.h>
12
13static void DSVideoSoftwareRendererInit(struct DSVideoRenderer* renderer);
14static void DSVideoSoftwareRendererDeinit(struct DSVideoRenderer* renderer);
15static void DSVideoSoftwareRendererReset(struct DSVideoRenderer* renderer);
16static uint16_t DSVideoSoftwareRendererWriteVideoRegister(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value);
17static void DSVideoSoftwareRendererWritePalette(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value);
18static void DSVideoSoftwareRendererWriteOAM(struct DSVideoRenderer* renderer, uint32_t oam);
19static void DSVideoSoftwareRendererInvalidateExtPal(struct DSVideoRenderer* renderer, bool obj, bool engB, int slot);
20static void DSVideoSoftwareRendererDrawScanline(struct DSVideoRenderer* renderer, int y);
21static void DSVideoSoftwareRendererDrawScanlineDirectly(struct DSVideoRenderer* renderer, int y, color_t* scanline);
22static void DSVideoSoftwareRendererFinishFrame(struct DSVideoRenderer* renderer);
23static void DSVideoSoftwareRendererGetPixels(struct DSVideoRenderer* renderer, size_t* stride, const void** pixels);
24static void DSVideoSoftwareRendererPutPixels(struct DSVideoRenderer* renderer, size_t stride, const void* pixels);
25
26static void DSVideoSoftwareRendererDrawBackgroundExt0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY);
27static void DSVideoSoftwareRendererDrawBackgroundExt1(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY);
28static void DSVideoSoftwareRendererDrawBackgroundExt2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY);
29
30static bool _regenerateExtPalette(struct DSVideoSoftwareRenderer* renderer, bool obj, bool engB, int slot) {
31 color_t* palette;
32 color_t* variantPalette;
33 struct GBAVideoSoftwareRenderer* softwareRenderer;
34 uint16_t* vram;
35 if (!obj) {
36 if (!engB) {
37 palette = &renderer->extPaletteA[slot * 4096];
38 variantPalette = &renderer->variantPaletteA[slot * 4096];
39 softwareRenderer = &renderer->engA;
40 vram = renderer->d.vramABGExtPal[slot];
41 } else {
42 palette = &renderer->extPaletteB[slot * 4096];
43 variantPalette = &renderer->variantPaletteB[slot * 4096];
44 softwareRenderer = &renderer->engB;
45 vram = renderer->d.vramBBGExtPal[slot];
46 }
47 } else {
48 if (!engB) {
49 palette = renderer->objExtPaletteA;
50 variantPalette = renderer->variantPaletteA;
51 softwareRenderer = &renderer->engA;
52 vram = renderer->d.vramAOBJExtPal;
53 } else {
54 palette = renderer->objExtPaletteB;
55 variantPalette = renderer->variantPaletteB;
56 softwareRenderer = &renderer->engB;
57 vram = renderer->d.vramBOBJExtPal;
58 }
59 }
60 if (!vram) {
61 return false;
62 }
63 int i;
64 for (i = 0; i < 4096; ++i) {
65 uint16_t value = vram[i];
66#ifdef COLOR_16_BIT
67#ifdef COLOR_5_6_5
68 unsigned color = 0;
69 color |= (value & 0x001F) << 11;
70 color |= (value & 0x03E0) << 1;
71 color |= (value & 0x7C00) >> 10;
72#else
73 unsigned color = value;
74#endif
75#else
76 unsigned color = 0;
77 color |= (value << 3) & 0xF8;
78 color |= (value << 6) & 0xF800;
79 color |= (value << 9) & 0xF80000;
80 color |= (color >> 5) & 0x070707;
81#endif
82 palette[i] = color;
83 if (softwareRenderer->blendEffect == BLEND_BRIGHTEN) {
84 variantPalette[i] = _brighten(color, softwareRenderer->bldy);
85 } else if (softwareRenderer->blendEffect == BLEND_DARKEN) {
86 variantPalette[i] = _darken(color, softwareRenderer->bldy);
87 }
88 }
89 if (obj) {
90 softwareRenderer->objExtPalette = palette;
91 softwareRenderer->objExtVariantPalette = variantPalette;
92 } else {
93 if (slot >= 2) {
94 if (GBARegisterBGCNTIsExtPaletteSlot(softwareRenderer->bg[slot - 2].control)) {
95 softwareRenderer->bg[slot - 2].extPalette = palette;
96 softwareRenderer->bg[slot - 2].variantPalette = variantPalette;
97 }
98 } else if (slot < 2 && !GBARegisterBGCNTIsExtPaletteSlot(softwareRenderer->bg[slot].control) ) {
99 softwareRenderer->bg[slot].extPalette = palette;
100 softwareRenderer->bg[slot].variantPalette = variantPalette;
101 }
102 softwareRenderer->bg[slot].extPalette = palette;
103 softwareRenderer->bg[slot].variantPalette = variantPalette;
104 }
105 return true;
106}
107
108static void _updateCharBase(struct DSVideoSoftwareRenderer* softwareRenderer, bool engB) {
109 struct GBAVideoSoftwareRenderer* eng;
110 if (!engB) {
111 eng = &softwareRenderer->engA;
112 } else {
113 eng = &softwareRenderer->engB;
114 }
115 int i;
116 uint32_t charBase = DSRegisterDISPCNTGetCharBase(softwareRenderer->dispcntA) << 16;
117 uint32_t screenBase = DSRegisterDISPCNTGetScreenBase(softwareRenderer->dispcntA) << 16;
118 for (i = 0; i < 4; ++i) {
119 if (!engB) {
120 uint32_t control = eng->bg[i].control;
121 eng->d.writeVideoRegister(&eng->d, DS9_REG_A_BG0CNT + i * 2, control);
122 eng->bg[i].control = control;
123 }
124
125 eng->bg[i].charBase = GBARegisterBGCNTGetCharBase(eng->bg[i].control) << 14;
126
127 if (!engB) {
128 softwareRenderer->engA.bg[i].charBase += charBase;
129 softwareRenderer->engA.bg[i].screenBase &= ~0x70000;
130 softwareRenderer->engA.bg[i].screenBase |= screenBase;
131 }
132 }
133}
134
135void DSVideoSoftwareRendererCreate(struct DSVideoSoftwareRenderer* renderer) {
136 renderer->d.init = DSVideoSoftwareRendererInit;
137 renderer->d.reset = DSVideoSoftwareRendererReset;
138 renderer->d.deinit = DSVideoSoftwareRendererDeinit;
139 renderer->d.writeVideoRegister = DSVideoSoftwareRendererWriteVideoRegister;
140 renderer->d.writePalette = DSVideoSoftwareRendererWritePalette;
141 renderer->d.writeOAM = DSVideoSoftwareRendererWriteOAM;
142 renderer->d.invalidateExtPal = DSVideoSoftwareRendererInvalidateExtPal;
143 renderer->d.drawScanline = DSVideoSoftwareRendererDrawScanline;
144 renderer->d.drawScanlineDirectly = DSVideoSoftwareRendererDrawScanlineDirectly;
145 renderer->d.finishFrame = DSVideoSoftwareRendererFinishFrame;
146 renderer->d.getPixels = DSVideoSoftwareRendererGetPixels;
147 renderer->d.putPixels = DSVideoSoftwareRendererPutPixels;
148
149 renderer->engA.d.cache = NULL;
150 GBAVideoSoftwareRendererCreate(&renderer->engA);
151 renderer->engA.combinedObjSort = true;
152
153 renderer->engB.d.cache = NULL;
154 GBAVideoSoftwareRendererCreate(&renderer->engB);
155 renderer->engB.combinedObjSort = true;
156}
157
158static void DSVideoSoftwareRendererInit(struct DSVideoRenderer* renderer) {
159 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
160 softwareRenderer->engA.d.palette = &renderer->palette[0];
161 softwareRenderer->engA.d.oam = &renderer->oam->oam[0];
162 softwareRenderer->engA.masterEnd = DS_VIDEO_HORIZONTAL_PIXELS;
163 softwareRenderer->engA.masterHeight = DS_VIDEO_VERTICAL_PIXELS;
164 softwareRenderer->engA.masterScanlines = DS_VIDEO_VERTICAL_TOTAL_PIXELS;
165 softwareRenderer->engA.outputBufferStride = softwareRenderer->outputBufferStride;
166 softwareRenderer->engB.d.palette = &renderer->palette[512];
167 softwareRenderer->engB.d.oam = &renderer->oam->oam[1];
168 softwareRenderer->engB.masterEnd = DS_VIDEO_HORIZONTAL_PIXELS;
169 softwareRenderer->engB.masterHeight = DS_VIDEO_VERTICAL_PIXELS;
170 softwareRenderer->engB.masterScanlines = DS_VIDEO_VERTICAL_TOTAL_PIXELS;
171 softwareRenderer->engB.outputBufferStride = softwareRenderer->outputBufferStride;
172
173 DSVideoSoftwareRendererReset(renderer);
174}
175
176static void DSVideoSoftwareRendererReset(struct DSVideoRenderer* renderer) {
177 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
178 softwareRenderer->engA.d.reset(&softwareRenderer->engA.d);
179 softwareRenderer->engB.d.reset(&softwareRenderer->engB.d);
180 softwareRenderer->powcnt = 0;
181 softwareRenderer->dispcntA = 0;
182 softwareRenderer->dispcntB = 0;
183}
184
185static void DSVideoSoftwareRendererDeinit(struct DSVideoRenderer* renderer) {
186 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
187 softwareRenderer->engA.d.deinit(&softwareRenderer->engA.d);
188 softwareRenderer->engB.d.deinit(&softwareRenderer->engB.d);
189}
190
191static void DSVideoSoftwareRendererUpdateDISPCNT(struct DSVideoSoftwareRenderer* softwareRenderer, bool engB) {
192 uint32_t dispcnt;
193 struct GBAVideoSoftwareRenderer* eng;
194 if (!engB) {
195 dispcnt = softwareRenderer->dispcntA;
196 eng = &softwareRenderer->engA;
197 } else {
198 dispcnt = softwareRenderer->dispcntB;
199 eng = &softwareRenderer->engB;
200 }
201 uint16_t fakeDispcnt = dispcnt & 0xFF87;
202 if (!DSRegisterDISPCNTIsTileObjMapping(dispcnt)) {
203 eng->tileStride = 0x20;
204 } else {
205 eng->tileStride = 0x20 << DSRegisterDISPCNTGetTileBoundary(dispcnt);
206 fakeDispcnt = GBARegisterDISPCNTFillObjCharacterMapping(fakeDispcnt);
207 }
208 eng->d.writeVideoRegister(&eng->d, DS9_REG_A_DISPCNT_LO, fakeDispcnt);
209 eng->dispcnt |= dispcnt & 0xFFFF0000;
210 if (DSRegisterDISPCNTIsBgExtPalette(dispcnt)) {
211 color_t* extPalette;
212 if (!engB) {
213 extPalette = softwareRenderer->extPaletteA;
214 } else {
215 extPalette = softwareRenderer->extPaletteB;
216 }
217 int i;
218 for (i = 0; i < 4; ++i) {
219 int slot = i;
220 if (i < 2 && GBARegisterBGCNTIsExtPaletteSlot(eng->bg[i].control)) {
221 slot += 2;
222 }
223 if (eng->bg[i].extPalette != &extPalette[slot * 4096]) {
224 _regenerateExtPalette(softwareRenderer, false, engB, slot);
225 }
226 }
227 } else {
228 eng->bg[0].extPalette = NULL;
229 eng->bg[1].extPalette = NULL;
230 eng->bg[2].extPalette = NULL;
231 eng->bg[3].extPalette = NULL;
232 }
233 if (DSRegisterDISPCNTIsObjExtPalette(dispcnt)) {
234 if (!engB) {
235 if (softwareRenderer->engA.objExtPalette != softwareRenderer->objExtPaletteA) {
236 _regenerateExtPalette(softwareRenderer, true, engB, 0);
237 }
238 } else {
239 if (softwareRenderer->engB.objExtPalette != softwareRenderer->objExtPaletteB) {
240 _regenerateExtPalette(softwareRenderer, true, engB, 0);
241 }
242 }
243 } else {
244 if (!engB) {
245 softwareRenderer->engA.objExtPalette = NULL;
246 } else {
247 softwareRenderer->engB.objExtPalette = NULL;
248 }
249 }
250 if (!engB) {
251 eng->dispcnt = DSRegisterDISPCNTClear3D(eng->dispcnt);
252 eng->dispcnt |= DSRegisterDISPCNTIs3D(dispcnt);
253 _updateCharBase(softwareRenderer, engB);
254 }
255}
256
257static uint16_t DSVideoSoftwareRendererWriteVideoRegister(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value) {
258 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
259 if (address >= DS9_REG_A_BG0CNT && address <= DS9_REG_A_BLDY) {
260 softwareRenderer->engA.d.writeVideoRegister(&softwareRenderer->engA.d, address, value);
261 } else if (address >= DS9_REG_B_BG0CNT && address <= DS9_REG_B_BLDY) {
262 softwareRenderer->engB.d.writeVideoRegister(&softwareRenderer->engB.d, address & 0xFF, value);
263 } else {
264 mLOG(DS_VIDEO, STUB, "Stub video register write: %04X:%04X", address, value);
265 }
266 switch (address) {
267 case DS9_REG_A_BG0CNT:
268 case DS9_REG_A_BG1CNT:
269 softwareRenderer->engA.bg[(address - DS9_REG_A_BG0CNT) >> 1].control = value;
270 // Fall through
271 case DS9_REG_A_BG2CNT:
272 case DS9_REG_A_BG3CNT:
273 _updateCharBase(softwareRenderer, false);
274 break;
275 case DS9_REG_B_BG0CNT:
276 case DS9_REG_B_BG1CNT:
277 softwareRenderer->engB.bg[(address - DS9_REG_B_BG0CNT) >> 1].control = value;
278 // Fall through
279 case DS9_REG_B_BG2CNT:
280 case DS9_REG_B_BG3CNT:
281 _updateCharBase(softwareRenderer, true);
282 break;
283 case DS9_REG_A_MASTER_BRIGHT:
284 softwareRenderer->engA.masterBright = DSRegisterMASTER_BRIGHTGetMode(value);
285 softwareRenderer->engA.masterBrightY = DSRegisterMASTER_BRIGHTGetY(value);
286 if (softwareRenderer->engA.masterBrightY > 0x10) {
287 softwareRenderer->engA.masterBrightY = 0x10;
288 }
289 break;
290 case DS9_REG_B_MASTER_BRIGHT:
291 softwareRenderer->engB.masterBright = DSRegisterMASTER_BRIGHTGetMode(value);
292 softwareRenderer->engB.masterBrightY = DSRegisterMASTER_BRIGHTGetY(value);
293 if (softwareRenderer->engB.masterBrightY > 0x10) {
294 softwareRenderer->engB.masterBrightY = 0x10;
295 }
296 break;
297 case DS9_REG_A_BLDCNT:
298 case DS9_REG_A_BLDY:
299 // TODO: Optimize
300 _regenerateExtPalette(softwareRenderer, false, false, 0);
301 _regenerateExtPalette(softwareRenderer, false, false, 1);
302 _regenerateExtPalette(softwareRenderer, false, false, 2);
303 _regenerateExtPalette(softwareRenderer, false, false, 3);
304 _regenerateExtPalette(softwareRenderer, true, false, 0);
305 break;
306 case DS9_REG_B_BLDCNT:
307 case DS9_REG_B_BLDY:
308 // TODO: Optimize
309 _regenerateExtPalette(softwareRenderer, false, true, 0);
310 _regenerateExtPalette(softwareRenderer, false, true, 1);
311 _regenerateExtPalette(softwareRenderer, false, true, 2);
312 _regenerateExtPalette(softwareRenderer, false, true, 3);
313 _regenerateExtPalette(softwareRenderer, true, true, 0);
314 break;
315 case DS9_REG_A_DISPCNT_LO:
316 softwareRenderer->dispcntA &= 0xFFFF0000;
317 softwareRenderer->dispcntA |= value;
318 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, false);
319 break;
320 case DS9_REG_A_DISPCNT_HI:
321 softwareRenderer->dispcntA &= 0x0000FFFF;
322 softwareRenderer->dispcntA |= value << 16;
323 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, false);
324 break;
325 case DS9_REG_B_DISPCNT_LO:
326 softwareRenderer->dispcntB &= 0xFFFF0000;
327 softwareRenderer->dispcntB |= value;
328 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, true);
329 break;
330 case DS9_REG_B_DISPCNT_HI:
331 softwareRenderer->dispcntB &= 0x0000FFFF;
332 softwareRenderer->dispcntB |= value << 16;
333 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, true);
334 break;
335 case DS9_REG_POWCNT1:
336 value &= 0x810F;
337 softwareRenderer->powcnt = value;
338 }
339 return value;
340}
341
342static void DSVideoSoftwareRendererWritePalette(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value) {
343 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
344 if (address < 0x400) {
345 softwareRenderer->engA.d.writePalette(&softwareRenderer->engA.d, address & 0x3FF, value);
346 } else {
347 softwareRenderer->engB.d.writePalette(&softwareRenderer->engB.d, address & 0x3FF, value);
348 }
349}
350
351static void DSVideoSoftwareRendererWriteOAM(struct DSVideoRenderer* renderer, uint32_t oam) {
352 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
353 if (oam < 0x200) {
354 softwareRenderer->engA.d.writeOAM(&softwareRenderer->engA.d, oam & 0x1FF);
355 } else {
356 softwareRenderer->engB.d.writeOAM(&softwareRenderer->engB.d, oam & 0x1FF);
357 }
358}
359
360static void DSVideoSoftwareRendererInvalidateExtPal(struct DSVideoRenderer* renderer, bool obj, bool engB, int slot) {
361 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
362 _regenerateExtPalette(softwareRenderer, obj, engB, slot);
363}
364
365static void DSVideoSoftwareRendererDrawGBAScanline(struct GBAVideoRenderer* renderer, struct DSGX* gx, int y) {
366 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
367
368 int x;
369 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y];
370 if (GBARegisterDISPCNTIsForcedBlank(softwareRenderer->dispcnt)) {
371 for (x = 0; x < softwareRenderer->masterEnd; ++x) {
372 row[x] = GBA_COLOR_WHITE;
373 }
374 return;
375 }
376
377 GBAVideoSoftwareRendererPreprocessBuffer(softwareRenderer, y);
378 int spriteLayers = GBAVideoSoftwareRendererPreprocessSpriteLayer(softwareRenderer, y);
379 memset(softwareRenderer->alphaA, softwareRenderer->blda, sizeof(softwareRenderer->alphaA));
380 memset(softwareRenderer->alphaB, softwareRenderer->bldb, sizeof(softwareRenderer->alphaB));
381
382 int w;
383 unsigned priority;
384 for (priority = 0; priority < 4; ++priority) {
385 softwareRenderer->end = 0;
386 for (w = 0; w < softwareRenderer->nWindows; ++w) {
387 softwareRenderer->start = softwareRenderer->end;
388 softwareRenderer->end = softwareRenderer->windows[w].endX;
389 softwareRenderer->currentWindow = softwareRenderer->windows[w].control;
390 if (spriteLayers & (1 << priority)) {
391 GBAVideoSoftwareRendererPostprocessSprite(softwareRenderer, priority);
392 }
393 if (TEST_LAYER_ENABLED(0)) {
394 if (DSRegisterDISPCNTIs3D(softwareRenderer->dispcnt) && gx) {
395 const color_t* scanline;
396 gx->renderer->getScanline(gx->renderer, y, &scanline);
397 uint32_t flags = (softwareRenderer->bg[0].priority << OFFSET_PRIORITY) | FLAG_IS_BACKGROUND;
398 flags |= FLAG_TARGET_2 * softwareRenderer->bg[0].target2;
399 flags |= FLAG_TARGET_1 * (softwareRenderer->bg[0].target1 && softwareRenderer->blendEffect == BLEND_ALPHA && GBAWindowControlIsBlendEnable(softwareRenderer->currentWindow.packed));
400 int x;
401 for (x = softwareRenderer->start; x < softwareRenderer->end; ++x) {
402 color_t color = scanline[x];
403 if (color & 0xFC000000) {
404 if (softwareRenderer->bg[0].target1) {
405 if (softwareRenderer->blendEffect == BLEND_DARKEN) {
406 color = _darken(color, softwareRenderer->bldy) | (color & 0xFF000000);
407 } else if (softwareRenderer->blendEffect == BLEND_BRIGHTEN) {
408 color = _brighten(color, softwareRenderer->bldy) | (color & 0xFF000000);
409 }
410 }
411 if ((scanline[x] >> 28) != 0xF) {
412 // TODO: More precise values
413 softwareRenderer->alphaA[x] = (color >> 28) + 1;
414 softwareRenderer->alphaB[x] = 0xF - (color >> 28);
415 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags | FLAG_TARGET_1, softwareRenderer->row[x]);
416 } else {
417 if (!(flags & FLAG_TARGET_2) || !(softwareRenderer->row[x] & FLAG_TARGET_1)) {
418 _compositeNoBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
419 softwareRenderer->alphaA[x] = 0x10;
420 softwareRenderer->alphaB[x] = 0;
421 } else if (softwareRenderer->row[x] & FLAG_TARGET_1) {
422 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
423 }
424 }
425 }
426 }
427 } else {
428 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[0], y);
429 }
430 }
431 if (TEST_LAYER_ENABLED(1)) {
432 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[1], y);
433 }
434 if (TEST_LAYER_ENABLED(2)) {
435 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
436 case 0:
437 case 1:
438 case 3:
439 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[2], y);
440 break;
441 case 2:
442 case 4:
443 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[2], y);
444 break;
445 case 5:
446 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[2].control)) {
447 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[2], y);
448 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[2].control)) {
449 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[2], y);
450 } else {
451 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[2], y);
452 }
453 break;
454 }
455 }
456 if (TEST_LAYER_ENABLED(3)) {
457 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
458 case 0:
459 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[3], y);
460 break;
461 case 1:
462 case 2:
463 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[3], y);
464 break;
465 case 3:
466 case 4:
467 case 5:
468 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[3].control)) {
469 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[3], y);
470 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[3].control)) {
471 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[3], y);
472 } else {
473 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[3], y);
474 }
475 break;
476 }
477 }
478 }
479 }
480 softwareRenderer->bg[2].sx += softwareRenderer->bg[2].dmx;
481 softwareRenderer->bg[2].sy += softwareRenderer->bg[2].dmy;
482 softwareRenderer->bg[3].sx += softwareRenderer->bg[3].dmx;
483 softwareRenderer->bg[3].sy += softwareRenderer->bg[3].dmy;
484
485 GBAVideoSoftwareRendererPostprocessBuffer(softwareRenderer);
486}
487
488static void _drawScanlineA(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
489 memcpy(softwareRenderer->engA.d.vramBG, softwareRenderer->d.vramABG, sizeof(softwareRenderer->engA.d.vramBG));
490 memcpy(softwareRenderer->engA.d.vramOBJ, softwareRenderer->d.vramAOBJ, sizeof(softwareRenderer->engA.d.vramOBJ));
491 color_t* row = &softwareRenderer->engA.outputBuffer[softwareRenderer->outputBufferStride * y];
492
493 int x;
494 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntA)) {
495 case 0:
496 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
497 row[x] = GBA_COLOR_WHITE;
498 }
499 return;
500 case 1:
501 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
502 break;
503 case 2: {
504 uint16_t* vram = &softwareRenderer->d.vram[0x10000 * DSRegisterDISPCNTGetVRAMBlock(softwareRenderer->dispcntA)];
505 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
506 color_t color;
507 LOAD_16(color, (x + y * DS_VIDEO_HORIZONTAL_PIXELS) * 2, vram);
508#ifndef COLOR_16_BIT
509 unsigned color32 = 0;
510 color32 |= (color << 9) & 0xF80000;
511 color32 |= (color << 3) & 0xF8;
512 color32 |= (color << 6) & 0xF800;
513 color32 |= (color32 >> 5) & 0x070707;
514 color = color32;
515#elif COLOR_5_6_5
516 uint16_t color16 = 0;
517 color16 |= (color & 0x001F) << 11;
518 color16 |= (color & 0x03E0) << 1;
519 color16 |= (color & 0x7C00) >> 10;
520 color = color16;
521#endif
522 softwareRenderer->engA.row[x] = color;
523 }
524 break;
525 }
526 case 3:
527 break;
528 }
529
530#ifdef COLOR_16_BIT
531#if defined(__ARM_NEON) && !defined(__APPLE__)
532 _to16Bit(row, softwareRenderer->engA.row, DS_VIDEO_HORIZONTAL_PIXELS);
533#else
534 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
535 row[x] = softwareRenderer->engA.row[x];
536 }
537#endif
538#else
539 switch (softwareRenderer->engA.masterBright) {
540 case 0:
541 default:
542 memcpy(row, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*row));
543 break;
544 case 1:
545 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
546 row[x] = _brighten(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
547 }
548 break;
549 case 2:
550 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
551 row[x] = _darken(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
552 }
553 break;
554 }
555#endif
556}
557
558static void _drawScanlineB(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
559 memcpy(softwareRenderer->engB.d.vramBG, softwareRenderer->d.vramBBG, sizeof(softwareRenderer->engB.d.vramBG));
560 memcpy(softwareRenderer->engB.d.vramOBJ, softwareRenderer->d.vramBOBJ, sizeof(softwareRenderer->engB.d.vramOBJ));
561 color_t* row = &softwareRenderer->engB.outputBuffer[softwareRenderer->outputBufferStride * y];
562
563 int x;
564 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntB)) {
565 case 0:
566 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
567 row[x] = GBA_COLOR_WHITE;
568 }
569 return;
570 case 1:
571 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engB.d, NULL, y);
572 break;
573 }
574
575#ifdef COLOR_16_BIT
576#if defined(__ARM_NEON) && !defined(__APPLE__)
577 _to16Bit(row, softwareRenderer->engB.row, DS_VIDEO_HORIZONTAL_PIXELS);
578#else
579 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
580 row[x] = softwareRenderer->engB.row[x];
581 }
582#endif
583#else
584 switch (softwareRenderer->engB.masterBright) {
585 case 0:
586 default:
587 memcpy(row, softwareRenderer->engB.row, softwareRenderer->engB.masterEnd * sizeof(*row));
588 break;
589 case 1:
590 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
591 row[x] = _brighten(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
592 }
593 break;
594 case 2:
595 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
596 row[x] = _darken(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
597 }
598 break;
599 }
600#endif
601}
602
603static void DSVideoSoftwareRendererDrawScanline(struct DSVideoRenderer* renderer, int y) {
604 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
605 if (!DSRegisterPOWCNT1IsSwap(softwareRenderer->powcnt)) {
606 softwareRenderer->engA.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
607 softwareRenderer->engB.outputBuffer = softwareRenderer->outputBuffer;
608 } else {
609 softwareRenderer->engA.outputBuffer = softwareRenderer->outputBuffer;
610 softwareRenderer->engB.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
611 }
612
613 _drawScanlineA(softwareRenderer, y);
614 _drawScanlineB(softwareRenderer, y);
615}
616
617static void DSVideoSoftwareRendererDrawScanlineDirectly(struct DSVideoRenderer* renderer, int y, color_t* scanline) {
618 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
619 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
620 memcpy(scanline, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*scanline));
621}
622
623static void DSVideoSoftwareRendererFinishFrame(struct DSVideoRenderer* renderer) {
624 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
625 softwareRenderer->engA.d.finishFrame(&softwareRenderer->engA.d);
626 softwareRenderer->engB.d.finishFrame(&softwareRenderer->engB.d);
627}
628
629static void DSVideoSoftwareRendererGetPixels(struct DSVideoRenderer* renderer, size_t* stride, const void** pixels) {
630 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
631#ifdef COLOR_16_BIT
632#error Not yet supported
633#else
634 *stride = softwareRenderer->outputBufferStride;
635 *pixels = softwareRenderer->outputBuffer;
636#endif
637}
638
639static void DSVideoSoftwareRendererPutPixels(struct DSVideoRenderer* renderer, size_t stride, const void* pixels) {
640}
641
642#define EXT_0_COORD_OVERFLOW \
643 localX = x & (sizeAdjusted - 1); \
644 localY = y & (sizeAdjusted - 1); \
645
646#define EXT_0_COORD_NO_OVERFLOW \
647 if ((x | y) & ~(sizeAdjusted - 1)) { \
648 continue; \
649 } \
650 localX = x; \
651 localY = y;
652
653#define EXT_0_NO_MOSAIC(COORD) \
654 COORD \
655 uint32_t screenBase = background->screenBase + (localX >> 10) + (((localY >> 6) & 0xFE0) << background->size); \
656 uint16_t* screenBlock = renderer->d.vramBG[screenBase >> VRAM_BLOCK_OFFSET]; \
657 if (UNLIKELY(!screenBlock)) { \
658 continue; \
659 } \
660 LOAD_16(mapData, screenBase & (VRAM_BLOCK_MASK - 1), screenBlock); \
661 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 8; \
662 palette = &mainPalette[paletteData]; \
663 if (GBA_TEXT_MAP_VFLIP(mapData)) { \
664 localY = 0x7FF - localY; \
665 } \
666 if (GBA_TEXT_MAP_HFLIP(mapData)) { \
667 localX = 0x7FF - localX; \
668 } \
669 uint32_t charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8); \
670 uint16_t* vram = renderer->d.vramBG[charBase >> VRAM_BLOCK_OFFSET]; \
671 if (UNLIKELY(!vram)) { \
672 continue; \
673 } \
674 pixelData = ((uint8_t*) vram)[charBase & VRAM_BLOCK_MASK];
675
676#define EXT_0_MOSAIC(COORD) \
677 if (!mosaicWait) { \
678 EXT_0_NO_MOSAIC(COORD) \
679 mosaicWait = mosaicH; \
680 } else { \
681 --mosaicWait; \
682 }
683
684#define EXT_0_LOOP(MOSAIC, COORD, BLEND, OBJWIN) \
685 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) { \
686 x += background->dx; \
687 y += background->dy; \
688 \
689 uint32_t current = *pixel; \
690 MOSAIC(COORD) \
691 if (pixelData) { \
692 COMPOSITE_256_ ## OBJWIN (BLEND, 0); \
693 } \
694 }
695
696#define DRAW_BACKGROUND_EXT_0(BLEND, OBJWIN) \
697 if (background->overflow) { \
698 if (mosaicH > 1) { \
699 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_OVERFLOW, BLEND, OBJWIN); \
700 } else { \
701 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_OVERFLOW, BLEND, OBJWIN); \
702 } \
703 } else { \
704 if (mosaicH > 1) { \
705 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_NO_OVERFLOW, BLEND, OBJWIN); \
706 } else { \
707 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_NO_OVERFLOW, BLEND, OBJWIN); \
708 } \
709 }
710
711void DSVideoSoftwareRendererDrawBackgroundExt0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
712 int sizeAdjusted = 0x8000 << background->size;
713
714 BACKGROUND_BITMAP_INIT;
715
716 color_t* mainPalette = background->extPalette;
717 if (variant) {
718 mainPalette = background->variantPalette;
719 }
720 if (!mainPalette) {
721 return;
722 }
723 int paletteData;
724
725 uint16_t mapData;
726 uint8_t pixelData = 0;
727
728 int outX;
729 uint32_t* pixel;
730
731 if (!objwinSlowPath) {
732 if (!(flags & FLAG_TARGET_2)) {
733 DRAW_BACKGROUND_EXT_0(NoBlend, NO_OBJWIN);
734 } else {
735 DRAW_BACKGROUND_EXT_0(Blend, NO_OBJWIN);
736 }
737 } else {
738 if (!(flags & FLAG_TARGET_2)) {
739 DRAW_BACKGROUND_EXT_0(NoBlend, OBJWIN);
740 } else {
741 DRAW_BACKGROUND_EXT_0(Blend, OBJWIN);
742 }
743 }
744}
745
746void DSVideoSoftwareRendererDrawBackgroundExt1(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
747 BACKGROUND_BITMAP_INIT;
748
749 uint32_t screenBase = (background->screenBase & 0xFF00) * 8;
750 uint8_t color;
751 int width, height;
752 switch (background->size) {
753 case 0:
754 width = 128;
755 height = 128;
756 break;
757 case 1:
758 width = 256;
759 height = 256;
760 break;
761 case 2:
762 width = 512;
763 height = 256;
764 break;
765 case 3:
766 width = 512;
767 height = 512;
768 break;
769 }
770
771 int outX;
772 for (outX = renderer->start; outX < renderer->end; ++outX) {
773 BACKGROUND_BITMAP_ITERATE(width, height);
774
775 if (!mosaicWait) {
776 uint32_t address = (localX >> 8) + (localY >> 8) * width + screenBase;
777 uint8_t* vram = (uint8_t*) renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
778 if (UNLIKELY(!vram)) {
779 continue;
780 }
781 color = vram[address & VRAM_BLOCK_MASK];
782 mosaicWait = mosaicH;
783 } else {
784 --mosaicWait;
785 }
786
787 uint32_t current = renderer->row[outX];
788 if (color && IS_WRITABLE(current)) {
789 if (!objwinSlowPath) {
790 _compositeBlendNoObjwin(renderer, outX, palette[color] | flags, current);
791 } else if (objwinForceEnable || (!(current & FLAG_OBJWIN)) == objwinOnly) {
792 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
793 unsigned mergedFlags = flags;
794 if (current & FLAG_OBJWIN) {
795 mergedFlags = objwinFlags;
796 }
797 _compositeBlendObjwin(renderer, outX, currentPalette[color] | mergedFlags, current);
798 }
799 }
800 }
801}
802
803void DSVideoSoftwareRendererDrawBackgroundExt2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
804 BACKGROUND_BITMAP_INIT;
805
806 uint32_t screenBase = (background->screenBase & 0xFF00) * 4;
807 uint32_t color;
808 int width, height;
809 switch (background->size) {
810 case 0:
811 width = 128;
812 height = 128;
813 break;
814 case 1:
815 width = 256;
816 height = 256;
817 break;
818 case 2:
819 width = 512;
820 height = 256;
821 break;
822 case 3:
823 width = 512;
824 height = 512;
825 break;
826 }
827
828 int outX;
829 for (outX = renderer->start; outX < renderer->end; ++outX) {
830 BACKGROUND_BITMAP_ITERATE(width, height);
831
832 if (!mosaicWait) {
833 uint32_t address = ((localX >> 8) + (localY >> 8) * width + screenBase) << 1;
834 uint16_t* vram = renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
835 if (UNLIKELY(!vram)) {
836 continue;
837 }
838 LOAD_16(color, address & VRAM_BLOCK_MASK, vram);
839#ifndef COLOR_16_BIT
840 unsigned color32;
841 color32 = 0;
842 color32 |= (color << 3) & 0xF8;
843 color32 |= (color << 6) & 0xF800;
844 color32 |= (color << 9) & 0xF80000;
845 color32 |= (color32 >> 5) & 0x070707;
846 color = color32;
847#elif COLOR_5_6_5
848 uint16_t color16 = 0;
849 color16 |= (color & 0x001F) << 11;
850 color16 |= (color & 0x03E0) << 1;
851 color16 |= (color & 0x7C00) >> 10;
852 color = color16;
853#endif
854 mosaicWait = mosaicH;
855 } else {
856 --mosaicWait;
857 }
858
859 uint32_t current = renderer->row[outX];
860 if (!objwinSlowPath || (!(current & FLAG_OBJWIN)) != objwinOnly) {
861 unsigned mergedFlags = flags;
862 if (current & FLAG_OBJWIN) {
863 mergedFlags = objwinFlags;
864 }
865 if (!variant) {
866 _compositeBlendObjwin(renderer, outX, color | mergedFlags, current);
867 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
868 _compositeBlendObjwin(renderer, outX, _brighten(color, renderer->bldy) | mergedFlags, current);
869 } else if (renderer->blendEffect == BLEND_DARKEN) {
870 _compositeBlendObjwin(renderer, outX, _darken(color, renderer->bldy) | mergedFlags, current);
871 }
872 }
873 }
874}