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;
411 flags |= FLAG_TARGET_2 * softwareRenderer->bg[0].target2;
412 flags |= FLAG_TARGET_1 * (softwareRenderer->bg[0].target1 && softwareRenderer->blendEffect == BLEND_ALPHA && GBAWindowControlIsBlendEnable(softwareRenderer->currentWindow.packed));
413 int x;
414 for (x = softwareRenderer->start; x < softwareRenderer->end; ++x) {
415 color_t color = scanline[x];
416 if (color & 0xFC000000) {
417 if (softwareRenderer->bg[0].target1 && GBAWindowControlIsBlendEnable(softwareRenderer->currentWindow.packed)) {
418 if (softwareRenderer->blendEffect == BLEND_DARKEN) {
419 color = _darken(color, softwareRenderer->bldy) | (color & 0xFF000000);
420 } else if (softwareRenderer->blendEffect == BLEND_BRIGHTEN) {
421 color = _brighten(color, softwareRenderer->bldy) | (color & 0xFF000000);
422 }
423 }
424 if ((scanline[x] >> 28) != 0xF) {
425 // TODO: More precise values
426 softwareRenderer->alphaA[x] = (color >> 28) + 1;
427 softwareRenderer->alphaB[x] = 0xF - (color >> 28);
428 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags | FLAG_TARGET_1, softwareRenderer->row[x]);
429 } else {
430 if (!(flags & FLAG_TARGET_2) || !(softwareRenderer->row[x] & FLAG_TARGET_1)) {
431 _compositeNoBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
432 softwareRenderer->alphaA[x] = 0x10;
433 softwareRenderer->alphaB[x] = 0;
434 } else if (softwareRenderer->row[x] & FLAG_TARGET_1) {
435 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
436 }
437 }
438 }
439 }
440 } else {
441 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[0], y);
442 }
443 }
444 if (TEST_LAYER_ENABLED(1)) {
445 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[1], y);
446 }
447 if (TEST_LAYER_ENABLED(2)) {
448 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
449 case 0:
450 case 1:
451 case 3:
452 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[2], y);
453 break;
454 case 2:
455 case 4:
456 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[2], y);
457 break;
458 case 5:
459 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[2].control)) {
460 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[2], y);
461 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[2].control)) {
462 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[2], y);
463 } else {
464 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[2], y);
465 }
466 break;
467 }
468 }
469 if (TEST_LAYER_ENABLED(3)) {
470 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
471 case 0:
472 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[3], y);
473 break;
474 case 1:
475 case 2:
476 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[3], y);
477 break;
478 case 3:
479 case 4:
480 case 5:
481 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[3].control)) {
482 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[3], y);
483 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[3].control)) {
484 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[3], y);
485 } else {
486 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[3], y);
487 }
488 break;
489 }
490 }
491 }
492 }
493
494 GBAVideoSoftwareRendererPostprocessBuffer(softwareRenderer);
495}
496
497static void _advanceAffine(struct GBAVideoSoftwareRenderer* softwareRenderer) {
498 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
499 case 2:
500 case 4:
501 case 5:
502 softwareRenderer->bg[2].sx += softwareRenderer->bg[2].dmx;
503 softwareRenderer->bg[2].sy += softwareRenderer->bg[2].dmy;
504 // Fall through
505 case 1:
506 case 3:
507 softwareRenderer->bg[3].sx += softwareRenderer->bg[3].dmx;
508 softwareRenderer->bg[3].sy += softwareRenderer->bg[3].dmy;
509 break;
510 }
511}
512
513static void _deadvanceAffine(struct GBAVideoSoftwareRenderer* softwareRenderer) {
514 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
515 case 2:
516 case 4:
517 case 5:
518 softwareRenderer->bg[2].sx -= softwareRenderer->bg[2].dmx;
519 softwareRenderer->bg[2].sy -= softwareRenderer->bg[2].dmy;
520 // Fall through
521 case 1:
522 case 3:
523 softwareRenderer->bg[3].sx -= softwareRenderer->bg[3].dmx;
524 softwareRenderer->bg[3].sy -= softwareRenderer->bg[3].dmy;
525 break;
526 }
527}
528
529static void _drawScanlineA(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
530 memcpy(softwareRenderer->engA.d.vramBG, softwareRenderer->d.vramABG, sizeof(softwareRenderer->engA.d.vramBG));
531 memcpy(softwareRenderer->engA.d.vramOBJ, softwareRenderer->d.vramAOBJ, sizeof(softwareRenderer->engA.d.vramOBJ));
532 color_t* row = &softwareRenderer->engA.outputBuffer[softwareRenderer->outputBufferStride * y];
533
534 int x;
535 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntA)) {
536 case 0:
537 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
538 row[x] = GBA_COLOR_WHITE;
539 }
540 return;
541 case 1:
542 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
543 break;
544 case 2: {
545 uint16_t* vram = &softwareRenderer->d.vram[0x10000 * DSRegisterDISPCNTGetVRAMBlock(softwareRenderer->dispcntA)];
546 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
547 color_t color;
548 LOAD_16(color, (x + y * DS_VIDEO_HORIZONTAL_PIXELS) * 2, vram);
549#ifndef COLOR_16_BIT
550 unsigned color32 = 0;
551 color32 |= (color << 9) & 0xF80000;
552 color32 |= (color << 3) & 0xF8;
553 color32 |= (color << 6) & 0xF800;
554 color32 |= (color32 >> 5) & 0x070707;
555 color = color32;
556#elif COLOR_5_6_5
557 uint16_t color16 = 0;
558 color16 |= (color & 0x001F) << 11;
559 color16 |= (color & 0x03E0) << 1;
560 color16 |= (color & 0x7C00) >> 10;
561 color = color16;
562#endif
563 softwareRenderer->engA.row[x] = color;
564 }
565 break;
566 }
567 case 3:
568 break;
569 }
570
571 _advanceAffine(&softwareRenderer->engA);
572
573#ifdef COLOR_16_BIT
574#if defined(__ARM_NEON) && !defined(__APPLE__)
575 _to16Bit(row, softwareRenderer->engA.row, DS_VIDEO_HORIZONTAL_PIXELS);
576#else
577 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
578 row[x] = softwareRenderer->engA.row[x];
579 }
580#endif
581#else
582 switch (softwareRenderer->engA.masterBright) {
583 case 0:
584 default:
585 memcpy(row, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*row));
586 break;
587 case 1:
588 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
589 row[x] = _brighten(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
590 }
591 break;
592 case 2:
593 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
594 row[x] = _darken(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
595 }
596 break;
597 }
598#endif
599}
600
601static void _drawScanlineB(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
602 memcpy(softwareRenderer->engB.d.vramBG, softwareRenderer->d.vramBBG, sizeof(softwareRenderer->engB.d.vramBG));
603 memcpy(softwareRenderer->engB.d.vramOBJ, softwareRenderer->d.vramBOBJ, sizeof(softwareRenderer->engB.d.vramOBJ));
604 color_t* row = &softwareRenderer->engB.outputBuffer[softwareRenderer->outputBufferStride * y];
605
606 int x;
607 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntB)) {
608 case 0:
609 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
610 row[x] = GBA_COLOR_WHITE;
611 }
612 return;
613 case 1:
614 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engB.d, NULL, y);
615 break;
616 }
617
618 _advanceAffine(&softwareRenderer->engB);
619
620#ifdef COLOR_16_BIT
621#if defined(__ARM_NEON) && !defined(__APPLE__)
622 _to16Bit(row, softwareRenderer->engB.row, DS_VIDEO_HORIZONTAL_PIXELS);
623#else
624 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
625 row[x] = softwareRenderer->engB.row[x];
626 }
627#endif
628#else
629 switch (softwareRenderer->engB.masterBright) {
630 case 0:
631 default:
632 memcpy(row, softwareRenderer->engB.row, softwareRenderer->engB.masterEnd * sizeof(*row));
633 break;
634 case 1:
635 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
636 row[x] = _brighten(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
637 }
638 break;
639 case 2:
640 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
641 row[x] = _darken(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
642 }
643 break;
644 }
645#endif
646}
647
648static void DSVideoSoftwareRendererDrawScanline(struct DSVideoRenderer* renderer, int y) {
649 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
650 if (!DSRegisterPOWCNT1IsSwap(softwareRenderer->powcnt)) {
651 softwareRenderer->engA.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
652 softwareRenderer->engB.outputBuffer = softwareRenderer->outputBuffer;
653 } else {
654 softwareRenderer->engA.outputBuffer = softwareRenderer->outputBuffer;
655 softwareRenderer->engB.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
656 }
657
658 softwareRenderer->engA.d.disableBG[0] = softwareRenderer->d.disableABG[0];
659 softwareRenderer->engA.d.disableBG[1] = softwareRenderer->d.disableABG[1];
660 softwareRenderer->engA.d.disableBG[2] = softwareRenderer->d.disableABG[2];
661 softwareRenderer->engA.d.disableBG[3] = softwareRenderer->d.disableABG[3];
662 softwareRenderer->engA.d.disableOBJ = softwareRenderer->d.disableAOBJ;
663
664 softwareRenderer->engB.d.disableBG[0] = softwareRenderer->d.disableBBG[0];
665 softwareRenderer->engB.d.disableBG[1] = softwareRenderer->d.disableBBG[1];
666 softwareRenderer->engB.d.disableBG[2] = softwareRenderer->d.disableBBG[2];
667 softwareRenderer->engB.d.disableBG[3] = softwareRenderer->d.disableBBG[3];
668 softwareRenderer->engB.d.disableOBJ = softwareRenderer->d.disableBOBJ;
669
670 _drawScanlineA(softwareRenderer, y);
671 _drawScanlineB(softwareRenderer, y);
672}
673
674static void DSVideoSoftwareRendererDrawScanlineDirectly(struct DSVideoRenderer* renderer, int y, color_t* scanline) {
675 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
676 _deadvanceAffine(&softwareRenderer->engA);
677 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
678 _advanceAffine(&softwareRenderer->engA);
679 memcpy(scanline, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*scanline));
680}
681
682static void DSVideoSoftwareRendererFinishFrame(struct DSVideoRenderer* renderer) {
683 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
684 softwareRenderer->engA.d.finishFrame(&softwareRenderer->engA.d);
685 softwareRenderer->engB.d.finishFrame(&softwareRenderer->engB.d);
686}
687
688static void DSVideoSoftwareRendererGetPixels(struct DSVideoRenderer* renderer, size_t* stride, const void** pixels) {
689 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
690#ifdef COLOR_16_BIT
691#error Not yet supported
692#else
693 *stride = softwareRenderer->outputBufferStride;
694 *pixels = softwareRenderer->outputBuffer;
695#endif
696}
697
698static void DSVideoSoftwareRendererPutPixels(struct DSVideoRenderer* renderer, size_t stride, const void* pixels) {
699}
700
701#define EXT_0_COORD_OVERFLOW \
702 localX = x & (sizeAdjusted - 1); \
703 localY = y & (sizeAdjusted - 1); \
704
705#define EXT_0_COORD_NO_OVERFLOW \
706 if ((x | y) & ~(sizeAdjusted - 1)) { \
707 continue; \
708 } \
709 localX = x; \
710 localY = y;
711
712#define EXT_0_EXT_PAL \
713 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 8; \
714 palette = &mainPalette[paletteData];
715
716#define EXT_0_PAL palette = mainPalette;
717
718#define EXT_0_NO_MOSAIC(COORD, PAL) \
719 COORD \
720 uint32_t screenBase = background->screenBase + (localX >> 10) + (((localY >> 6) & 0xFE0) << background->size); \
721 uint16_t* screenBlock = renderer->d.vramBG[screenBase >> VRAM_BLOCK_OFFSET]; \
722 if (UNLIKELY(!screenBlock)) { \
723 continue; \
724 } \
725 LOAD_16(mapData, screenBase & (VRAM_BLOCK_MASK - 1), screenBlock); \
726 PAL; \
727 if (GBA_TEXT_MAP_VFLIP(mapData)) { \
728 localY = 0x7FF - localY; \
729 } \
730 if (GBA_TEXT_MAP_HFLIP(mapData)) { \
731 localX = 0x7FF - localX; \
732 } \
733 uint32_t charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8); \
734 uint16_t* vram = renderer->d.vramBG[charBase >> VRAM_BLOCK_OFFSET]; \
735 pixelData = ((uint8_t*) vram)[charBase & VRAM_BLOCK_MASK];
736
737#define EXT_0_MOSAIC(COORD, PAL) \
738 if (!mosaicWait) { \
739 EXT_0_NO_MOSAIC(COORD, PAL) \
740 mosaicWait = mosaicH; \
741 } else { \
742 --mosaicWait; \
743 }
744
745#define EXT_0_LOOP(MOSAIC, COORD, PAL, BLEND, OBJWIN) \
746 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) { \
747 x += background->dx; \
748 y += background->dy; \
749 \
750 uint32_t current = *pixel; \
751 MOSAIC(COORD, PAL) \
752 if (pixelData) { \
753 COMPOSITE_256_ ## OBJWIN (BLEND, 0); \
754 } \
755 }
756
757#define DRAW_BACKGROUND_EXT_0(BLEND, OBJWIN) \
758 if (background->extPalette) { \
759 if (background->overflow) { \
760 if (mosaicH > 1) { \
761 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
762 } else { \
763 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
764 } \
765 } else { \
766 if (mosaicH > 1) { \
767 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
768 } else { \
769 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
770 } \
771 } \
772 } else { \
773 if (background->overflow) { \
774 if (mosaicH > 1) { \
775 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
776 } else { \
777 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
778 } \
779 } else { \
780 if (mosaicH > 1) { \
781 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
782 } else { \
783 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
784 } \
785 } \
786 }
787
788void DSVideoSoftwareRendererDrawBackgroundExt0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
789 int sizeAdjusted = 0x8000 << background->size;
790
791 BACKGROUND_BITMAP_INIT;
792
793 color_t* mainPalette = background->extPalette;
794 if (variant) {
795 mainPalette = background->variantPalette;
796 }
797 if (!mainPalette) {
798 mainPalette = renderer->normalPalette;
799 if (variant) {
800 mainPalette = renderer->variantPalette;
801 }
802 }
803 int paletteData;
804
805 uint16_t mapData;
806 uint8_t pixelData = 0;
807
808 int outX;
809 uint32_t* pixel;
810
811 if (!objwinSlowPath) {
812 if (!(flags & FLAG_TARGET_2)) {
813 DRAW_BACKGROUND_EXT_0(NoBlend, NO_OBJWIN);
814 } else {
815 DRAW_BACKGROUND_EXT_0(Blend, NO_OBJWIN);
816 }
817 } else {
818 if (!(flags & FLAG_TARGET_2)) {
819 DRAW_BACKGROUND_EXT_0(NoBlend, OBJWIN);
820 } else {
821 DRAW_BACKGROUND_EXT_0(Blend, OBJWIN);
822 }
823 }
824}
825
826#define DS_BACKGROUND_BITMAP_ITERATE(W, H) \
827 x += background->dx; \
828 y += background->dy; \
829 \
830 if (background->overflow) { \
831 localX = x & ((W << 8) - 1); \
832 localY = y & ((H << 8) - 1); \
833 } else if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
834 continue; \
835 } else { \
836 localX = x; \
837 localY = y; \
838 }
839
840void DSVideoSoftwareRendererDrawBackgroundExt1(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
841 BACKGROUND_BITMAP_INIT;
842
843 uint32_t screenBase = (background->screenBase & 0xFF00) * 8;
844 uint8_t color;
845 int width, height;
846 switch (background->size) {
847 case 0:
848 width = 128;
849 height = 128;
850 break;
851 case 1:
852 width = 256;
853 height = 256;
854 break;
855 case 2:
856 width = 512;
857 height = 256;
858 break;
859 case 3:
860 width = 512;
861 height = 512;
862 break;
863 }
864
865 int outX;
866 for (outX = renderer->start; outX < renderer->end; ++outX) {
867 DS_BACKGROUND_BITMAP_ITERATE(width, height);
868
869 if (!mosaicWait) {
870 uint32_t address = (localX >> 8) + (localY >> 8) * width + screenBase;
871 uint8_t* vram = (uint8_t*) renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
872 color = vram[address & VRAM_BLOCK_MASK];
873 mosaicWait = mosaicH;
874 } else {
875 --mosaicWait;
876 }
877
878 uint32_t current = renderer->row[outX];
879 if (color && IS_WRITABLE(current)) {
880 if (!objwinSlowPath) {
881 _compositeBlendNoObjwin(renderer, outX, palette[color] | flags, current);
882 } else if (objwinForceEnable || (!(current & FLAG_OBJWIN)) == objwinOnly) {
883 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
884 unsigned mergedFlags = flags;
885 if (current & FLAG_OBJWIN) {
886 mergedFlags = objwinFlags;
887 }
888 _compositeBlendObjwin(renderer, outX, currentPalette[color] | mergedFlags, current);
889 }
890 }
891 }
892}
893
894void DSVideoSoftwareRendererDrawBackgroundExt2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
895 BACKGROUND_BITMAP_INIT;
896
897 uint32_t screenBase = (background->screenBase & 0xFF00) * 4;
898 uint32_t color;
899 int width, height;
900 switch (background->size) {
901 case 0:
902 width = 128;
903 height = 128;
904 break;
905 case 1:
906 width = 256;
907 height = 256;
908 break;
909 case 2:
910 width = 512;
911 height = 256;
912 break;
913 case 3:
914 width = 512;
915 height = 512;
916 break;
917 }
918
919 int outX;
920 for (outX = renderer->start; outX < renderer->end; ++outX) {
921 DS_BACKGROUND_BITMAP_ITERATE(width, height);
922
923 if (!mosaicWait) {
924 uint32_t address = ((localX >> 8) + (localY >> 8) * width + screenBase) << 1;
925 uint16_t* vram = renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
926 LOAD_16(color, address & VRAM_BLOCK_MASK, vram);
927#ifndef COLOR_16_BIT
928 unsigned color32;
929 color32 = 0;
930 color32 |= (color << 3) & 0xF8;
931 color32 |= (color << 6) & 0xF800;
932 color32 |= (color << 9) & 0xF80000;
933 color32 |= (color32 >> 5) & 0x070707;
934 color = color32;
935#elif COLOR_5_6_5
936 uint16_t color16 = 0;
937 color16 |= (color & 0x001F) << 11;
938 color16 |= (color & 0x03E0) << 1;
939 color16 |= (color & 0x7C00) >> 10;
940 color = color16;
941#endif
942 mosaicWait = mosaicH;
943 } else {
944 --mosaicWait;
945 }
946
947 uint32_t current = renderer->row[outX];
948 if (!objwinSlowPath || (!(current & FLAG_OBJWIN)) != objwinOnly) {
949 unsigned mergedFlags = flags;
950 if (current & FLAG_OBJWIN) {
951 mergedFlags = objwinFlags;
952 }
953 if (!variant) {
954 _compositeBlendObjwin(renderer, outX, color | mergedFlags, current);
955 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
956 _compositeBlendObjwin(renderer, outX, _brighten(color, renderer->bldy) | mergedFlags, current);
957 } else if (renderer->blendEffect == BLEND_DARKEN) {
958 _compositeBlendObjwin(renderer, outX, _darken(color, renderer->bldy) | mergedFlags, current);
959 }
960 }
961 }
962}