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->d.disableABG[0] = false;
150 renderer->d.disableABG[1] = false;
151 renderer->d.disableABG[2] = false;
152 renderer->d.disableABG[3] = false;
153 renderer->d.disableAOBJ = false;
154
155 renderer->d.disableBBG[0] = false;
156 renderer->d.disableBBG[1] = false;
157 renderer->d.disableBBG[2] = false;
158 renderer->d.disableBBG[3] = false;
159 renderer->d.disableBOBJ = false;
160
161 renderer->engA.d.cache = NULL;
162 GBAVideoSoftwareRendererCreate(&renderer->engA);
163 renderer->engA.combinedObjSort = true;
164
165 renderer->engB.d.cache = NULL;
166 GBAVideoSoftwareRendererCreate(&renderer->engB);
167 renderer->engB.combinedObjSort = true;
168}
169
170static void DSVideoSoftwareRendererInit(struct DSVideoRenderer* renderer) {
171 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
172 softwareRenderer->engA.d.palette = &renderer->palette[0];
173 softwareRenderer->engA.d.oam = &renderer->oam->oam[0];
174 softwareRenderer->engA.masterEnd = DS_VIDEO_HORIZONTAL_PIXELS;
175 softwareRenderer->engA.masterHeight = DS_VIDEO_VERTICAL_PIXELS;
176 softwareRenderer->engA.masterScanlines = DS_VIDEO_VERTICAL_TOTAL_PIXELS;
177 softwareRenderer->engA.outputBufferStride = softwareRenderer->outputBufferStride;
178 softwareRenderer->engB.d.palette = &renderer->palette[512];
179 softwareRenderer->engB.d.oam = &renderer->oam->oam[1];
180 softwareRenderer->engB.masterEnd = DS_VIDEO_HORIZONTAL_PIXELS;
181 softwareRenderer->engB.masterHeight = DS_VIDEO_VERTICAL_PIXELS;
182 softwareRenderer->engB.masterScanlines = DS_VIDEO_VERTICAL_TOTAL_PIXELS;
183 softwareRenderer->engB.outputBufferStride = softwareRenderer->outputBufferStride;
184
185 DSVideoSoftwareRendererReset(renderer);
186}
187
188static void DSVideoSoftwareRendererReset(struct DSVideoRenderer* renderer) {
189 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
190 softwareRenderer->engA.d.reset(&softwareRenderer->engA.d);
191 softwareRenderer->engB.d.reset(&softwareRenderer->engB.d);
192 softwareRenderer->powcnt = 0;
193 softwareRenderer->dispcntA = 0;
194 softwareRenderer->dispcntB = 0;
195}
196
197static void DSVideoSoftwareRendererDeinit(struct DSVideoRenderer* renderer) {
198 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
199 softwareRenderer->engA.d.deinit(&softwareRenderer->engA.d);
200 softwareRenderer->engB.d.deinit(&softwareRenderer->engB.d);
201}
202
203static void DSVideoSoftwareRendererUpdateDISPCNT(struct DSVideoSoftwareRenderer* softwareRenderer, bool engB) {
204 uint32_t dispcnt;
205 struct GBAVideoSoftwareRenderer* eng;
206 if (!engB) {
207 dispcnt = softwareRenderer->dispcntA;
208 eng = &softwareRenderer->engA;
209 } else {
210 dispcnt = softwareRenderer->dispcntB;
211 eng = &softwareRenderer->engB;
212 }
213 uint16_t fakeDispcnt = dispcnt & 0xFF87;
214 if (!DSRegisterDISPCNTIsTileObjMapping(dispcnt)) {
215 eng->tileStride = 0x20;
216 } else {
217 eng->tileStride = 0x20 << DSRegisterDISPCNTGetTileBoundary(dispcnt);
218 fakeDispcnt = GBARegisterDISPCNTFillObjCharacterMapping(fakeDispcnt);
219 }
220 eng->bitmapStride = 0x10 << DSRegisterDISPCNTGetBitmapObj2D(dispcnt);
221 eng->d.writeVideoRegister(&eng->d, DS9_REG_A_DISPCNT_LO, fakeDispcnt);
222 eng->dispcnt |= dispcnt & 0xFFFF0000;
223 if (DSRegisterDISPCNTIsBgExtPalette(dispcnt)) {
224 color_t* extPalette;
225 if (!engB) {
226 extPalette = softwareRenderer->extPaletteA;
227 } else {
228 extPalette = softwareRenderer->extPaletteB;
229 }
230 int i;
231 for (i = 0; i < 4; ++i) {
232 int slot = i;
233 if (i < 2 && GBARegisterBGCNTIsExtPaletteSlot(eng->bg[i].control)) {
234 slot += 2;
235 }
236 if (eng->bg[i].extPalette != &extPalette[slot * 4096]) {
237 _regenerateExtPalette(softwareRenderer, false, engB, slot);
238 }
239 }
240 } else {
241 eng->bg[0].extPalette = NULL;
242 eng->bg[1].extPalette = NULL;
243 eng->bg[2].extPalette = NULL;
244 eng->bg[3].extPalette = NULL;
245 }
246 if (DSRegisterDISPCNTIsObjExtPalette(dispcnt)) {
247 if (!engB) {
248 if (softwareRenderer->engA.objExtPalette != softwareRenderer->objExtPaletteA) {
249 _regenerateExtPalette(softwareRenderer, true, engB, 0);
250 }
251 } else {
252 if (softwareRenderer->engB.objExtPalette != softwareRenderer->objExtPaletteB) {
253 _regenerateExtPalette(softwareRenderer, true, engB, 0);
254 }
255 }
256 } else {
257 if (!engB) {
258 softwareRenderer->engA.objExtPalette = NULL;
259 } else {
260 softwareRenderer->engB.objExtPalette = NULL;
261 }
262 }
263 if (!engB) {
264 eng->dispcnt = DSRegisterDISPCNTClear3D(eng->dispcnt);
265 eng->dispcnt |= DSRegisterDISPCNTIs3D(dispcnt);
266 _updateCharBase(softwareRenderer, engB);
267 }
268}
269
270static uint16_t DSVideoSoftwareRendererWriteVideoRegister(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value) {
271 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
272 if (address >= DS9_REG_A_BG0CNT && address <= DS9_REG_A_BLDY) {
273 softwareRenderer->engA.d.writeVideoRegister(&softwareRenderer->engA.d, address, value);
274 } else if (address >= DS9_REG_B_BG0CNT && address <= DS9_REG_B_BLDY) {
275 softwareRenderer->engB.d.writeVideoRegister(&softwareRenderer->engB.d, address & 0xFF, value);
276 } else {
277 mLOG(DS_VIDEO, STUB, "Stub video register write: %04X:%04X", address, value);
278 }
279 switch (address) {
280 case DS9_REG_A_BG0CNT:
281 case DS9_REG_A_BG1CNT:
282 softwareRenderer->engA.bg[(address - DS9_REG_A_BG0CNT) >> 1].control = value;
283 // Fall through
284 case DS9_REG_A_BG2CNT:
285 case DS9_REG_A_BG3CNT:
286 _updateCharBase(softwareRenderer, false);
287 break;
288 case DS9_REG_B_BG0CNT:
289 case DS9_REG_B_BG1CNT:
290 softwareRenderer->engB.bg[(address - DS9_REG_B_BG0CNT) >> 1].control = value;
291 // Fall through
292 case DS9_REG_B_BG2CNT:
293 case DS9_REG_B_BG3CNT:
294 _updateCharBase(softwareRenderer, true);
295 break;
296 case DS9_REG_A_MASTER_BRIGHT:
297 softwareRenderer->engA.masterBright = DSRegisterMASTER_BRIGHTGetMode(value);
298 softwareRenderer->engA.masterBrightY = DSRegisterMASTER_BRIGHTGetY(value);
299 if (softwareRenderer->engA.masterBrightY > 0x10) {
300 softwareRenderer->engA.masterBrightY = 0x10;
301 }
302 break;
303 case DS9_REG_B_MASTER_BRIGHT:
304 softwareRenderer->engB.masterBright = DSRegisterMASTER_BRIGHTGetMode(value);
305 softwareRenderer->engB.masterBrightY = DSRegisterMASTER_BRIGHTGetY(value);
306 if (softwareRenderer->engB.masterBrightY > 0x10) {
307 softwareRenderer->engB.masterBrightY = 0x10;
308 }
309 break;
310 case DS9_REG_A_BLDCNT:
311 case DS9_REG_A_BLDY:
312 // TODO: Optimize
313 _regenerateExtPalette(softwareRenderer, false, false, 0);
314 _regenerateExtPalette(softwareRenderer, false, false, 1);
315 _regenerateExtPalette(softwareRenderer, false, false, 2);
316 _regenerateExtPalette(softwareRenderer, false, false, 3);
317 _regenerateExtPalette(softwareRenderer, true, false, 0);
318 break;
319 case DS9_REG_B_BLDCNT:
320 case DS9_REG_B_BLDY:
321 // TODO: Optimize
322 _regenerateExtPalette(softwareRenderer, false, true, 0);
323 _regenerateExtPalette(softwareRenderer, false, true, 1);
324 _regenerateExtPalette(softwareRenderer, false, true, 2);
325 _regenerateExtPalette(softwareRenderer, false, true, 3);
326 _regenerateExtPalette(softwareRenderer, true, true, 0);
327 break;
328 case DS9_REG_A_DISPCNT_LO:
329 softwareRenderer->dispcntA &= 0xFFFF0000;
330 softwareRenderer->dispcntA |= value;
331 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, false);
332 break;
333 case DS9_REG_A_DISPCNT_HI:
334 softwareRenderer->dispcntA &= 0x0000FFFF;
335 softwareRenderer->dispcntA |= value << 16;
336 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, false);
337 break;
338 case DS9_REG_B_DISPCNT_LO:
339 softwareRenderer->dispcntB &= 0xFFFF0000;
340 softwareRenderer->dispcntB |= value;
341 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, true);
342 break;
343 case DS9_REG_B_DISPCNT_HI:
344 softwareRenderer->dispcntB &= 0x0000FFFF;
345 softwareRenderer->dispcntB |= value << 16;
346 DSVideoSoftwareRendererUpdateDISPCNT(softwareRenderer, true);
347 break;
348 case DS9_REG_POWCNT1:
349 value &= 0x810F;
350 softwareRenderer->powcnt = value;
351 }
352 return value;
353}
354
355static void DSVideoSoftwareRendererWritePalette(struct DSVideoRenderer* renderer, uint32_t address, uint16_t value) {
356 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
357 if (address < 0x400) {
358 softwareRenderer->engA.d.writePalette(&softwareRenderer->engA.d, address & 0x3FF, value);
359 } else {
360 softwareRenderer->engB.d.writePalette(&softwareRenderer->engB.d, address & 0x3FF, value);
361 }
362}
363
364static void DSVideoSoftwareRendererWriteOAM(struct DSVideoRenderer* renderer, uint32_t oam) {
365 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
366 if (oam < 0x200) {
367 softwareRenderer->engA.d.writeOAM(&softwareRenderer->engA.d, oam & 0x1FF);
368 } else {
369 softwareRenderer->engB.d.writeOAM(&softwareRenderer->engB.d, oam & 0x1FF);
370 }
371}
372
373static void DSVideoSoftwareRendererInvalidateExtPal(struct DSVideoRenderer* renderer, bool obj, bool engB, int slot) {
374 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
375 _regenerateExtPalette(softwareRenderer, obj, engB, slot);
376}
377
378static void DSVideoSoftwareRendererDrawGBAScanline(struct GBAVideoRenderer* renderer, struct DSGX* gx, int y) {
379 struct GBAVideoSoftwareRenderer* softwareRenderer = (struct GBAVideoSoftwareRenderer*) renderer;
380
381 int x;
382 color_t* row = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * y];
383 if (GBARegisterDISPCNTIsForcedBlank(softwareRenderer->dispcnt)) {
384 for (x = 0; x < softwareRenderer->masterEnd; ++x) {
385 row[x] = GBA_COLOR_WHITE;
386 }
387 return;
388 }
389
390 GBAVideoSoftwareRendererPreprocessBuffer(softwareRenderer, y);
391 int spriteLayers = GBAVideoSoftwareRendererPreprocessSpriteLayer(softwareRenderer, y);
392 memset(softwareRenderer->alphaA, softwareRenderer->blda, sizeof(softwareRenderer->alphaA));
393 memset(softwareRenderer->alphaB, softwareRenderer->bldb, sizeof(softwareRenderer->alphaB));
394
395 int w;
396 unsigned priority;
397 for (priority = 0; priority < 4; ++priority) {
398 softwareRenderer->end = 0;
399 for (w = 0; w < softwareRenderer->nWindows; ++w) {
400 softwareRenderer->start = softwareRenderer->end;
401 softwareRenderer->end = softwareRenderer->windows[w].endX;
402 softwareRenderer->currentWindow = softwareRenderer->windows[w].control;
403 if (spriteLayers & (1 << priority)) {
404 GBAVideoSoftwareRendererPostprocessSprite(softwareRenderer, priority);
405 }
406 if (TEST_LAYER_ENABLED(0)) {
407 if (DSRegisterDISPCNTIs3D(softwareRenderer->dispcnt) && gx) {
408 const color_t* scanline;
409 gx->renderer->getScanline(gx->renderer, y, &scanline);
410 uint32_t flags = (softwareRenderer->bg[0].priority << OFFSET_PRIORITY) | FLAG_IS_BACKGROUND | FLAG_TARGET_1 | FLAG_TARGET_2;
411 int x;
412 for (x = softwareRenderer->start; x < softwareRenderer->end; ++x) {
413 color_t color = scanline[x];
414 if (color & 0xFC000000) {
415 if (softwareRenderer->bg[0].target1 && GBAWindowControlIsBlendEnable(softwareRenderer->currentWindow.packed)) {
416 if (softwareRenderer->blendEffect == BLEND_DARKEN) {
417 color = _darken(color, softwareRenderer->bldy) | (color & 0xFF000000);
418 } else if (softwareRenderer->blendEffect == BLEND_BRIGHTEN) {
419 color = _brighten(color, softwareRenderer->bldy) | (color & 0xFF000000);
420 }
421 }
422 if ((scanline[x] >> 28) != 0xF) {
423 // TODO: More precise values
424 softwareRenderer->alphaA[x] = (color >> 28) + 1;
425 softwareRenderer->alphaB[x] = 0xF - (color >> 28);
426 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
427 } else {
428 if (!(softwareRenderer->row[x] & FLAG_TARGET_1)) {
429 _compositeNoBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
430 } else {
431 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
432 }
433 softwareRenderer->alphaA[x] = 0x10;
434 softwareRenderer->alphaB[x] = 0;
435 }
436 }
437 }
438 } else {
439 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[0], y);
440 }
441 }
442 if (TEST_LAYER_ENABLED(1)) {
443 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[1], y);
444 }
445 if (TEST_LAYER_ENABLED(2)) {
446 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
447 case 0:
448 case 1:
449 case 3:
450 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[2], y);
451 break;
452 case 2:
453 case 4:
454 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[2], y);
455 break;
456 case 5:
457 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[2].control)) {
458 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[2], y);
459 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[2].control)) {
460 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[2], y);
461 } else {
462 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[2], y);
463 }
464 break;
465 }
466 }
467 if (TEST_LAYER_ENABLED(3)) {
468 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
469 case 0:
470 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[3], y);
471 break;
472 case 1:
473 case 2:
474 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[3], y);
475 break;
476 case 3:
477 case 4:
478 case 5:
479 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[3].control)) {
480 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[3], y);
481 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[3].control)) {
482 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[3], y);
483 } else {
484 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[3], y);
485 }
486 break;
487 }
488 }
489 }
490 }
491
492 GBAVideoSoftwareRendererPostprocessBuffer(softwareRenderer);
493}
494
495static void _advanceAffine(struct GBAVideoSoftwareRenderer* softwareRenderer) {
496 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
497 case 2:
498 case 4:
499 case 5:
500 softwareRenderer->bg[2].sx += softwareRenderer->bg[2].dmx;
501 softwareRenderer->bg[2].sy += softwareRenderer->bg[2].dmy;
502 // Fall through
503 case 1:
504 case 3:
505 softwareRenderer->bg[3].sx += softwareRenderer->bg[3].dmx;
506 softwareRenderer->bg[3].sy += softwareRenderer->bg[3].dmy;
507 break;
508 }
509}
510
511static void _deadvanceAffine(struct GBAVideoSoftwareRenderer* softwareRenderer) {
512 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
513 case 2:
514 case 4:
515 case 5:
516 softwareRenderer->bg[2].sx -= softwareRenderer->bg[2].dmx;
517 softwareRenderer->bg[2].sy -= softwareRenderer->bg[2].dmy;
518 // Fall through
519 case 1:
520 case 3:
521 softwareRenderer->bg[3].sx -= softwareRenderer->bg[3].dmx;
522 softwareRenderer->bg[3].sy -= softwareRenderer->bg[3].dmy;
523 break;
524 }
525}
526
527static void _drawScanlineA(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
528 memcpy(softwareRenderer->engA.d.vramBG, softwareRenderer->d.vramABG, sizeof(softwareRenderer->engA.d.vramBG));
529 memcpy(softwareRenderer->engA.d.vramOBJ, softwareRenderer->d.vramAOBJ, sizeof(softwareRenderer->engA.d.vramOBJ));
530 color_t* row = &softwareRenderer->engA.outputBuffer[softwareRenderer->outputBufferStride * y];
531
532 int x;
533 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntA)) {
534 case 0:
535 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
536 row[x] = GBA_COLOR_WHITE;
537 }
538 return;
539 case 1:
540 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
541 break;
542 case 2: {
543 uint16_t* vram = &softwareRenderer->d.vram[0x10000 * DSRegisterDISPCNTGetVRAMBlock(softwareRenderer->dispcntA)];
544 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
545 color_t color;
546 LOAD_16(color, (x + y * DS_VIDEO_HORIZONTAL_PIXELS) * 2, vram);
547#ifndef COLOR_16_BIT
548 unsigned color32 = 0;
549 color32 |= (color << 9) & 0xF80000;
550 color32 |= (color << 3) & 0xF8;
551 color32 |= (color << 6) & 0xF800;
552 color32 |= (color32 >> 5) & 0x070707;
553 color = color32;
554#elif COLOR_5_6_5
555 uint16_t color16 = 0;
556 color16 |= (color & 0x001F) << 11;
557 color16 |= (color & 0x03E0) << 1;
558 color16 |= (color & 0x7C00) >> 10;
559 color = color16;
560#endif
561 softwareRenderer->engA.row[x] = color;
562 }
563 break;
564 }
565 case 3:
566 break;
567 }
568
569 _advanceAffine(&softwareRenderer->engA);
570
571#ifdef COLOR_16_BIT
572#if defined(__ARM_NEON) && !defined(__APPLE__)
573 _to16Bit(row, softwareRenderer->engA.row, DS_VIDEO_HORIZONTAL_PIXELS);
574#else
575 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
576 row[x] = softwareRenderer->engA.row[x];
577 }
578#endif
579#else
580 switch (softwareRenderer->engA.masterBright) {
581 case 0:
582 default:
583 memcpy(row, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*row));
584 break;
585 case 1:
586 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
587 row[x] = _brighten(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
588 }
589 break;
590 case 2:
591 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
592 row[x] = _darken(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
593 }
594 break;
595 }
596#endif
597}
598
599static void _drawScanlineB(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
600 memcpy(softwareRenderer->engB.d.vramBG, softwareRenderer->d.vramBBG, sizeof(softwareRenderer->engB.d.vramBG));
601 memcpy(softwareRenderer->engB.d.vramOBJ, softwareRenderer->d.vramBOBJ, sizeof(softwareRenderer->engB.d.vramOBJ));
602 color_t* row = &softwareRenderer->engB.outputBuffer[softwareRenderer->outputBufferStride * y];
603
604 int x;
605 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntB)) {
606 case 0:
607 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
608 row[x] = GBA_COLOR_WHITE;
609 }
610 return;
611 case 1:
612 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engB.d, NULL, y);
613 break;
614 }
615
616 _advanceAffine(&softwareRenderer->engB);
617
618#ifdef COLOR_16_BIT
619#if defined(__ARM_NEON) && !defined(__APPLE__)
620 _to16Bit(row, softwareRenderer->engB.row, DS_VIDEO_HORIZONTAL_PIXELS);
621#else
622 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
623 row[x] = softwareRenderer->engB.row[x];
624 }
625#endif
626#else
627 switch (softwareRenderer->engB.masterBright) {
628 case 0:
629 default:
630 memcpy(row, softwareRenderer->engB.row, softwareRenderer->engB.masterEnd * sizeof(*row));
631 break;
632 case 1:
633 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
634 row[x] = _brighten(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
635 }
636 break;
637 case 2:
638 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
639 row[x] = _darken(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
640 }
641 break;
642 }
643#endif
644}
645
646static void DSVideoSoftwareRendererDrawScanline(struct DSVideoRenderer* renderer, int y) {
647 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
648 if (!DSRegisterPOWCNT1IsSwap(softwareRenderer->powcnt)) {
649 softwareRenderer->engA.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
650 softwareRenderer->engB.outputBuffer = softwareRenderer->outputBuffer;
651 } else {
652 softwareRenderer->engA.outputBuffer = softwareRenderer->outputBuffer;
653 softwareRenderer->engB.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
654 }
655
656 softwareRenderer->engA.d.disableBG[0] = softwareRenderer->d.disableABG[0];
657 softwareRenderer->engA.d.disableBG[1] = softwareRenderer->d.disableABG[1];
658 softwareRenderer->engA.d.disableBG[2] = softwareRenderer->d.disableABG[2];
659 softwareRenderer->engA.d.disableBG[3] = softwareRenderer->d.disableABG[3];
660 softwareRenderer->engA.d.disableOBJ = softwareRenderer->d.disableAOBJ;
661
662 softwareRenderer->engB.d.disableBG[0] = softwareRenderer->d.disableBBG[0];
663 softwareRenderer->engB.d.disableBG[1] = softwareRenderer->d.disableBBG[1];
664 softwareRenderer->engB.d.disableBG[2] = softwareRenderer->d.disableBBG[2];
665 softwareRenderer->engB.d.disableBG[3] = softwareRenderer->d.disableBBG[3];
666 softwareRenderer->engB.d.disableOBJ = softwareRenderer->d.disableBOBJ;
667
668 _drawScanlineA(softwareRenderer, y);
669 _drawScanlineB(softwareRenderer, y);
670}
671
672static void DSVideoSoftwareRendererDrawScanlineDirectly(struct DSVideoRenderer* renderer, int y, color_t* scanline) {
673 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
674 _deadvanceAffine(&softwareRenderer->engA);
675 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
676 _advanceAffine(&softwareRenderer->engA);
677 memcpy(scanline, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*scanline));
678}
679
680static void DSVideoSoftwareRendererFinishFrame(struct DSVideoRenderer* renderer) {
681 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
682 softwareRenderer->engA.d.finishFrame(&softwareRenderer->engA.d);
683 softwareRenderer->engB.d.finishFrame(&softwareRenderer->engB.d);
684}
685
686static void DSVideoSoftwareRendererGetPixels(struct DSVideoRenderer* renderer, size_t* stride, const void** pixels) {
687 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
688#ifdef COLOR_16_BIT
689#error Not yet supported
690#else
691 *stride = softwareRenderer->outputBufferStride;
692 *pixels = softwareRenderer->outputBuffer;
693#endif
694}
695
696static void DSVideoSoftwareRendererPutPixels(struct DSVideoRenderer* renderer, size_t stride, const void* pixels) {
697}
698
699#define EXT_0_COORD_OVERFLOW \
700 localX = x & (sizeAdjusted - 1); \
701 localY = y & (sizeAdjusted - 1); \
702
703#define EXT_0_COORD_NO_OVERFLOW \
704 if ((x | y) & ~(sizeAdjusted - 1)) { \
705 continue; \
706 } \
707 localX = x; \
708 localY = y;
709
710#define EXT_0_EXT_PAL \
711 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 8; \
712 palette = &mainPalette[paletteData];
713
714#define EXT_0_PAL palette = mainPalette;
715
716#define EXT_0_NO_MOSAIC(COORD, PAL) \
717 COORD \
718 uint32_t screenBase = background->screenBase + (localX >> 10) + (((localY >> 6) & 0xFE0) << background->size); \
719 uint16_t* screenBlock = renderer->d.vramBG[screenBase >> VRAM_BLOCK_OFFSET]; \
720 if (UNLIKELY(!screenBlock)) { \
721 continue; \
722 } \
723 LOAD_16(mapData, screenBase & (VRAM_BLOCK_MASK - 1), screenBlock); \
724 PAL; \
725 if (GBA_TEXT_MAP_VFLIP(mapData)) { \
726 localY = 0x7FF - localY; \
727 } \
728 if (GBA_TEXT_MAP_HFLIP(mapData)) { \
729 localX = 0x7FF - localX; \
730 } \
731 uint32_t charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8); \
732 uint16_t* vram = renderer->d.vramBG[charBase >> VRAM_BLOCK_OFFSET]; \
733 pixelData = ((uint8_t*) vram)[charBase & VRAM_BLOCK_MASK];
734
735#define EXT_0_MOSAIC(COORD, PAL) \
736 if (!mosaicWait) { \
737 EXT_0_NO_MOSAIC(COORD, PAL) \
738 mosaicWait = mosaicH; \
739 } else { \
740 --mosaicWait; \
741 }
742
743#define EXT_0_LOOP(MOSAIC, COORD, PAL, BLEND, OBJWIN) \
744 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) { \
745 x += background->dx; \
746 y += background->dy; \
747 \
748 uint32_t current = *pixel; \
749 MOSAIC(COORD, PAL) \
750 if (pixelData) { \
751 COMPOSITE_256_ ## OBJWIN (BLEND, 0); \
752 } \
753 }
754
755#define DRAW_BACKGROUND_EXT_0(BLEND, OBJWIN) \
756 if (background->extPalette) { \
757 if (background->overflow) { \
758 if (mosaicH > 1) { \
759 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
760 } else { \
761 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
762 } \
763 } else { \
764 if (mosaicH > 1) { \
765 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
766 } else { \
767 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
768 } \
769 } \
770 } else { \
771 if (background->overflow) { \
772 if (mosaicH > 1) { \
773 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
774 } else { \
775 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
776 } \
777 } else { \
778 if (mosaicH > 1) { \
779 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
780 } else { \
781 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
782 } \
783 } \
784 }
785
786void DSVideoSoftwareRendererDrawBackgroundExt0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
787 int sizeAdjusted = 0x8000 << background->size;
788
789 BACKGROUND_BITMAP_INIT;
790
791 color_t* mainPalette = background->extPalette;
792 if (variant) {
793 mainPalette = background->variantPalette;
794 }
795 if (!mainPalette) {
796 mainPalette = renderer->normalPalette;
797 if (variant) {
798 mainPalette = renderer->variantPalette;
799 }
800 }
801 int paletteData;
802
803 uint16_t mapData;
804 uint8_t pixelData = 0;
805
806 int outX;
807 uint32_t* pixel;
808
809 if (!objwinSlowPath) {
810 if (!(flags & FLAG_TARGET_2)) {
811 DRAW_BACKGROUND_EXT_0(NoBlend, NO_OBJWIN);
812 } else {
813 DRAW_BACKGROUND_EXT_0(Blend, NO_OBJWIN);
814 }
815 } else {
816 if (!(flags & FLAG_TARGET_2)) {
817 DRAW_BACKGROUND_EXT_0(NoBlend, OBJWIN);
818 } else {
819 DRAW_BACKGROUND_EXT_0(Blend, OBJWIN);
820 }
821 }
822}
823
824#define DS_BACKGROUND_BITMAP_ITERATE(W, H) \
825 x += background->dx; \
826 y += background->dy; \
827 \
828 if (background->overflow) { \
829 localX = x & ((W << 8) - 1); \
830 localY = y & ((H << 8) - 1); \
831 } else if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
832 continue; \
833 } else { \
834 localX = x; \
835 localY = y; \
836 }
837
838void DSVideoSoftwareRendererDrawBackgroundExt1(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
839 BACKGROUND_BITMAP_INIT;
840
841 uint32_t screenBase = (background->screenBase & 0xFF00) * 8;
842 uint8_t color;
843 int width, height;
844 switch (background->size) {
845 case 0:
846 width = 128;
847 height = 128;
848 break;
849 case 1:
850 width = 256;
851 height = 256;
852 break;
853 case 2:
854 width = 512;
855 height = 256;
856 break;
857 case 3:
858 width = 512;
859 height = 512;
860 break;
861 }
862
863 int outX;
864 for (outX = renderer->start; outX < renderer->end; ++outX) {
865 DS_BACKGROUND_BITMAP_ITERATE(width, height);
866
867 if (!mosaicWait) {
868 uint32_t address = (localX >> 8) + (localY >> 8) * width + screenBase;
869 uint8_t* vram = (uint8_t*) renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
870 color = vram[address & VRAM_BLOCK_MASK];
871 mosaicWait = mosaicH;
872 } else {
873 --mosaicWait;
874 }
875
876 uint32_t current = renderer->row[outX];
877 if (color && IS_WRITABLE(current)) {
878 if (!objwinSlowPath) {
879 _compositeBlendNoObjwin(renderer, outX, palette[color] | flags, current);
880 } else if (objwinForceEnable || (!(current & FLAG_OBJWIN)) == objwinOnly) {
881 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
882 unsigned mergedFlags = flags;
883 if (current & FLAG_OBJWIN) {
884 mergedFlags = objwinFlags;
885 }
886 _compositeBlendObjwin(renderer, outX, currentPalette[color] | mergedFlags, current);
887 }
888 }
889 }
890}
891
892void DSVideoSoftwareRendererDrawBackgroundExt2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
893 BACKGROUND_BITMAP_INIT;
894
895 uint32_t screenBase = (background->screenBase & 0xFF00) * 4;
896 uint32_t color;
897 int width, height;
898 switch (background->size) {
899 case 0:
900 width = 128;
901 height = 128;
902 break;
903 case 1:
904 width = 256;
905 height = 256;
906 break;
907 case 2:
908 width = 512;
909 height = 256;
910 break;
911 case 3:
912 width = 512;
913 height = 512;
914 break;
915 }
916
917 int outX;
918 for (outX = renderer->start; outX < renderer->end; ++outX) {
919 DS_BACKGROUND_BITMAP_ITERATE(width, height);
920
921 if (!mosaicWait) {
922 uint32_t address = ((localX >> 8) + (localY >> 8) * width + screenBase) << 1;
923 uint16_t* vram = renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
924 LOAD_16(color, address & VRAM_BLOCK_MASK, vram);
925#ifndef COLOR_16_BIT
926 unsigned color32;
927 color32 = 0;
928 color32 |= (color << 3) & 0xF8;
929 color32 |= (color << 6) & 0xF800;
930 color32 |= (color << 9) & 0xF80000;
931 color32 |= (color32 >> 5) & 0x070707;
932 color = color32;
933#elif COLOR_5_6_5
934 uint16_t color16 = 0;
935 color16 |= (color & 0x001F) << 11;
936 color16 |= (color & 0x03E0) << 1;
937 color16 |= (color & 0x7C00) >> 10;
938 color = color16;
939#endif
940 mosaicWait = mosaicH;
941 } else {
942 --mosaicWait;
943 }
944
945 uint32_t current = renderer->row[outX];
946 if (!objwinSlowPath || (!(current & FLAG_OBJWIN)) != objwinOnly) {
947 unsigned mergedFlags = flags;
948 if (current & FLAG_OBJWIN) {
949 mergedFlags = objwinFlags;
950 }
951 if (!variant) {
952 _compositeBlendObjwin(renderer, outX, color | mergedFlags, current);
953 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
954 _compositeBlendObjwin(renderer, outX, _brighten(color, renderer->bldy) | mergedFlags, current);
955 } else if (renderer->blendEffect == BLEND_DARKEN) {
956 _compositeBlendObjwin(renderer, outX, _darken(color, renderer->bldy) | mergedFlags, current);
957 }
958 }
959 }
960}