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 softwareRenderer->bg[2].sx = softwareRenderer->bg[2].refx + softwareRenderer->bg[2].dmx * y;
396 softwareRenderer->bg[2].sy = softwareRenderer->bg[2].refy + softwareRenderer->bg[2].dmy * y;
397 softwareRenderer->bg[3].sx = softwareRenderer->bg[3].refx + softwareRenderer->bg[3].dmx * y;
398 softwareRenderer->bg[3].sy = softwareRenderer->bg[3].refy + softwareRenderer->bg[3].dmy * y;
399
400 int w;
401 unsigned priority;
402 for (priority = 0; priority < 4; ++priority) {
403 softwareRenderer->end = 0;
404 for (w = 0; w < softwareRenderer->nWindows; ++w) {
405 softwareRenderer->start = softwareRenderer->end;
406 softwareRenderer->end = softwareRenderer->windows[w].endX;
407 softwareRenderer->currentWindow = softwareRenderer->windows[w].control;
408 if (spriteLayers & (1 << priority)) {
409 GBAVideoSoftwareRendererPostprocessSprite(softwareRenderer, priority);
410 }
411 if (TEST_LAYER_ENABLED(0)) {
412 if (DSRegisterDISPCNTIs3D(softwareRenderer->dispcnt) && gx) {
413 const color_t* scanline;
414 gx->renderer->getScanline(gx->renderer, y, &scanline);
415 uint32_t flags = (softwareRenderer->bg[0].priority << OFFSET_PRIORITY) | FLAG_IS_BACKGROUND;
416 flags |= FLAG_TARGET_2 * softwareRenderer->bg[0].target2;
417 flags |= FLAG_TARGET_1 * (softwareRenderer->bg[0].target1 && softwareRenderer->blendEffect == BLEND_ALPHA && GBAWindowControlIsBlendEnable(softwareRenderer->currentWindow.packed));
418 int x;
419 for (x = softwareRenderer->start; x < softwareRenderer->end; ++x) {
420 color_t color = scanline[x];
421 if (color & 0xFC000000) {
422 if (softwareRenderer->bg[0].target1 && GBAWindowControlIsBlendEnable(softwareRenderer->currentWindow.packed)) {
423 if (softwareRenderer->blendEffect == BLEND_DARKEN) {
424 color = _darken(color, softwareRenderer->bldy) | (color & 0xFF000000);
425 } else if (softwareRenderer->blendEffect == BLEND_BRIGHTEN) {
426 color = _brighten(color, softwareRenderer->bldy) | (color & 0xFF000000);
427 }
428 }
429 if ((scanline[x] >> 28) != 0xF) {
430 // TODO: More precise values
431 softwareRenderer->alphaA[x] = (color >> 28) + 1;
432 softwareRenderer->alphaB[x] = 0xF - (color >> 28);
433 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags | FLAG_TARGET_1, softwareRenderer->row[x]);
434 } else {
435 if (!(flags & FLAG_TARGET_2) || !(softwareRenderer->row[x] & FLAG_TARGET_1)) {
436 _compositeNoBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
437 softwareRenderer->alphaA[x] = 0x10;
438 softwareRenderer->alphaB[x] = 0;
439 } else if (softwareRenderer->row[x] & FLAG_TARGET_1) {
440 _compositeBlendNoObjwin(softwareRenderer, x, (color & 0x00FFFFFF) | flags, softwareRenderer->row[x]);
441 }
442 }
443 }
444 }
445 } else {
446 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[0], y);
447 }
448 }
449 if (TEST_LAYER_ENABLED(1)) {
450 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[1], y);
451 }
452 if (TEST_LAYER_ENABLED(2)) {
453 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
454 case 0:
455 case 1:
456 case 3:
457 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[2], y);
458 break;
459 case 2:
460 case 4:
461 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[2], y);
462 break;
463 case 5:
464 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[2].control)) {
465 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[2], y);
466 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[2].control)) {
467 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[2], y);
468 } else {
469 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[2], y);
470 }
471 break;
472 }
473 }
474 if (TEST_LAYER_ENABLED(3)) {
475 switch (GBARegisterDISPCNTGetMode(softwareRenderer->dispcnt)) {
476 case 0:
477 GBAVideoSoftwareRendererDrawBackgroundMode0(softwareRenderer, &softwareRenderer->bg[3], y);
478 break;
479 case 1:
480 case 2:
481 GBAVideoSoftwareRendererDrawBackgroundMode2(softwareRenderer, &softwareRenderer->bg[3], y);
482 break;
483 case 3:
484 case 4:
485 case 5:
486 if (!GBARegisterBGCNTIsExtendedMode1(softwareRenderer->bg[3].control)) {
487 DSVideoSoftwareRendererDrawBackgroundExt0(softwareRenderer, &softwareRenderer->bg[3], y);
488 } else if (!GBARegisterBGCNTIsExtendedMode0(softwareRenderer->bg[3].control)) {
489 DSVideoSoftwareRendererDrawBackgroundExt1(softwareRenderer, &softwareRenderer->bg[3], y);
490 } else {
491 DSVideoSoftwareRendererDrawBackgroundExt2(softwareRenderer, &softwareRenderer->bg[3], y);
492 }
493 break;
494 }
495 }
496 }
497 }
498
499 GBAVideoSoftwareRendererPostprocessBuffer(softwareRenderer);
500}
501
502static void _drawScanlineA(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
503 memcpy(softwareRenderer->engA.d.vramBG, softwareRenderer->d.vramABG, sizeof(softwareRenderer->engA.d.vramBG));
504 memcpy(softwareRenderer->engA.d.vramOBJ, softwareRenderer->d.vramAOBJ, sizeof(softwareRenderer->engA.d.vramOBJ));
505 color_t* row = &softwareRenderer->engA.outputBuffer[softwareRenderer->outputBufferStride * y];
506
507 int x;
508 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntA)) {
509 case 0:
510 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
511 row[x] = GBA_COLOR_WHITE;
512 }
513 return;
514 case 1:
515 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
516 break;
517 case 2: {
518 uint16_t* vram = &softwareRenderer->d.vram[0x10000 * DSRegisterDISPCNTGetVRAMBlock(softwareRenderer->dispcntA)];
519 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
520 color_t color;
521 LOAD_16(color, (x + y * DS_VIDEO_HORIZONTAL_PIXELS) * 2, vram);
522#ifndef COLOR_16_BIT
523 unsigned color32 = 0;
524 color32 |= (color << 9) & 0xF80000;
525 color32 |= (color << 3) & 0xF8;
526 color32 |= (color << 6) & 0xF800;
527 color32 |= (color32 >> 5) & 0x070707;
528 color = color32;
529#elif COLOR_5_6_5
530 uint16_t color16 = 0;
531 color16 |= (color & 0x001F) << 11;
532 color16 |= (color & 0x03E0) << 1;
533 color16 |= (color & 0x7C00) >> 10;
534 color = color16;
535#endif
536 softwareRenderer->engA.row[x] = color;
537 }
538 break;
539 }
540 case 3:
541 break;
542 }
543
544#ifdef COLOR_16_BIT
545#if defined(__ARM_NEON) && !defined(__APPLE__)
546 _to16Bit(row, softwareRenderer->engA.row, DS_VIDEO_HORIZONTAL_PIXELS);
547#else
548 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
549 row[x] = softwareRenderer->engA.row[x];
550 }
551#endif
552#else
553 switch (softwareRenderer->engA.masterBright) {
554 case 0:
555 default:
556 memcpy(row, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*row));
557 break;
558 case 1:
559 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
560 row[x] = _brighten(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
561 }
562 break;
563 case 2:
564 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
565 row[x] = _darken(softwareRenderer->engA.row[x], softwareRenderer->engA.masterBrightY);
566 }
567 break;
568 }
569#endif
570}
571
572static void _drawScanlineB(struct DSVideoSoftwareRenderer* softwareRenderer, int y) {
573 memcpy(softwareRenderer->engB.d.vramBG, softwareRenderer->d.vramBBG, sizeof(softwareRenderer->engB.d.vramBG));
574 memcpy(softwareRenderer->engB.d.vramOBJ, softwareRenderer->d.vramBOBJ, sizeof(softwareRenderer->engB.d.vramOBJ));
575 color_t* row = &softwareRenderer->engB.outputBuffer[softwareRenderer->outputBufferStride * y];
576
577 int x;
578 switch (DSRegisterDISPCNTGetDispMode(softwareRenderer->dispcntB)) {
579 case 0:
580 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
581 row[x] = GBA_COLOR_WHITE;
582 }
583 return;
584 case 1:
585 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engB.d, NULL, y);
586 break;
587 }
588
589#ifdef COLOR_16_BIT
590#if defined(__ARM_NEON) && !defined(__APPLE__)
591 _to16Bit(row, softwareRenderer->engB.row, DS_VIDEO_HORIZONTAL_PIXELS);
592#else
593 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
594 row[x] = softwareRenderer->engB.row[x];
595 }
596#endif
597#else
598 switch (softwareRenderer->engB.masterBright) {
599 case 0:
600 default:
601 memcpy(row, softwareRenderer->engB.row, softwareRenderer->engB.masterEnd * sizeof(*row));
602 break;
603 case 1:
604 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
605 row[x] = _brighten(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
606 }
607 break;
608 case 2:
609 for (x = 0; x < DS_VIDEO_HORIZONTAL_PIXELS; ++x) {
610 row[x] = _darken(softwareRenderer->engB.row[x], softwareRenderer->engB.masterBrightY);
611 }
612 break;
613 }
614#endif
615}
616
617static void DSVideoSoftwareRendererDrawScanline(struct DSVideoRenderer* renderer, int y) {
618 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
619 if (!DSRegisterPOWCNT1IsSwap(softwareRenderer->powcnt)) {
620 softwareRenderer->engA.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
621 softwareRenderer->engB.outputBuffer = softwareRenderer->outputBuffer;
622 } else {
623 softwareRenderer->engA.outputBuffer = softwareRenderer->outputBuffer;
624 softwareRenderer->engB.outputBuffer = &softwareRenderer->outputBuffer[softwareRenderer->outputBufferStride * DS_VIDEO_VERTICAL_PIXELS];
625 }
626
627 softwareRenderer->engA.d.disableBG[0] = softwareRenderer->d.disableABG[0];
628 softwareRenderer->engA.d.disableBG[1] = softwareRenderer->d.disableABG[1];
629 softwareRenderer->engA.d.disableBG[2] = softwareRenderer->d.disableABG[2];
630 softwareRenderer->engA.d.disableBG[3] = softwareRenderer->d.disableABG[3];
631 softwareRenderer->engA.d.disableOBJ = softwareRenderer->d.disableAOBJ;
632
633 softwareRenderer->engB.d.disableBG[0] = softwareRenderer->d.disableBBG[0];
634 softwareRenderer->engB.d.disableBG[1] = softwareRenderer->d.disableBBG[1];
635 softwareRenderer->engB.d.disableBG[2] = softwareRenderer->d.disableBBG[2];
636 softwareRenderer->engB.d.disableBG[3] = softwareRenderer->d.disableBBG[3];
637 softwareRenderer->engB.d.disableOBJ = softwareRenderer->d.disableBOBJ;
638
639 _drawScanlineA(softwareRenderer, y);
640 _drawScanlineB(softwareRenderer, y);
641}
642
643static void DSVideoSoftwareRendererDrawScanlineDirectly(struct DSVideoRenderer* renderer, int y, color_t* scanline) {
644 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
645 DSVideoSoftwareRendererDrawGBAScanline(&softwareRenderer->engA.d, softwareRenderer->d.gx, y);
646 memcpy(scanline, softwareRenderer->engA.row, softwareRenderer->engA.masterEnd * sizeof(*scanline));
647}
648
649static void DSVideoSoftwareRendererFinishFrame(struct DSVideoRenderer* renderer) {
650 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
651 softwareRenderer->engA.d.finishFrame(&softwareRenderer->engA.d);
652 softwareRenderer->engB.d.finishFrame(&softwareRenderer->engB.d);
653}
654
655static void DSVideoSoftwareRendererGetPixels(struct DSVideoRenderer* renderer, size_t* stride, const void** pixels) {
656 struct DSVideoSoftwareRenderer* softwareRenderer = (struct DSVideoSoftwareRenderer*) renderer;
657#ifdef COLOR_16_BIT
658#error Not yet supported
659#else
660 *stride = softwareRenderer->outputBufferStride;
661 *pixels = softwareRenderer->outputBuffer;
662#endif
663}
664
665static void DSVideoSoftwareRendererPutPixels(struct DSVideoRenderer* renderer, size_t stride, const void* pixels) {
666}
667
668#define EXT_0_COORD_OVERFLOW \
669 localX = x & (sizeAdjusted - 1); \
670 localY = y & (sizeAdjusted - 1); \
671
672#define EXT_0_COORD_NO_OVERFLOW \
673 if ((x | y) & ~(sizeAdjusted - 1)) { \
674 continue; \
675 } \
676 localX = x; \
677 localY = y;
678
679#define EXT_0_EXT_PAL \
680 paletteData = GBA_TEXT_MAP_PALETTE(mapData) << 8; \
681 palette = &mainPalette[paletteData];
682
683#define EXT_0_PAL palette = mainPalette;
684
685#define EXT_0_NO_MOSAIC(COORD, PAL) \
686 COORD \
687 uint32_t screenBase = background->screenBase + (localX >> 10) + (((localY >> 6) & 0xFE0) << background->size); \
688 uint16_t* screenBlock = renderer->d.vramBG[screenBase >> VRAM_BLOCK_OFFSET]; \
689 if (UNLIKELY(!screenBlock)) { \
690 continue; \
691 } \
692 LOAD_16(mapData, screenBase & (VRAM_BLOCK_MASK - 1), screenBlock); \
693 PAL; \
694 if (GBA_TEXT_MAP_VFLIP(mapData)) { \
695 localY = 0x7FF - localY; \
696 } \
697 if (GBA_TEXT_MAP_HFLIP(mapData)) { \
698 localX = 0x7FF - localX; \
699 } \
700 uint32_t charBase = (background->charBase + (GBA_TEXT_MAP_TILE(mapData) << 6)) + ((localY & 0x700) >> 5) + ((localX & 0x700) >> 8); \
701 uint16_t* vram = renderer->d.vramBG[charBase >> VRAM_BLOCK_OFFSET]; \
702 if (UNLIKELY(!vram)) { \
703 continue; \
704 } \
705 pixelData = ((uint8_t*) vram)[charBase & VRAM_BLOCK_MASK];
706
707#define EXT_0_MOSAIC(COORD, PAL) \
708 if (!mosaicWait) { \
709 EXT_0_NO_MOSAIC(COORD, PAL) \
710 mosaicWait = mosaicH; \
711 } else { \
712 --mosaicWait; \
713 }
714
715#define EXT_0_LOOP(MOSAIC, COORD, PAL, BLEND, OBJWIN) \
716 for (outX = renderer->start, pixel = &renderer->row[outX]; outX < renderer->end; ++outX, ++pixel) { \
717 x += background->dx; \
718 y += background->dy; \
719 \
720 uint32_t current = *pixel; \
721 MOSAIC(COORD, PAL) \
722 if (pixelData) { \
723 COMPOSITE_256_ ## OBJWIN (BLEND, 0); \
724 } \
725 }
726
727#define DRAW_BACKGROUND_EXT_0(BLEND, OBJWIN) \
728 if (background->extPalette) { \
729 if (background->overflow) { \
730 if (mosaicH > 1) { \
731 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
732 } else { \
733 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
734 } \
735 } else { \
736 if (mosaicH > 1) { \
737 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
738 } else { \
739 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_EXT_PAL, BLEND, OBJWIN); \
740 } \
741 } \
742 } else { \
743 if (background->overflow) { \
744 if (mosaicH > 1) { \
745 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
746 } else { \
747 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
748 } \
749 } else { \
750 if (mosaicH > 1) { \
751 EXT_0_LOOP(EXT_0_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
752 } else { \
753 EXT_0_LOOP(EXT_0_NO_MOSAIC, EXT_0_COORD_NO_OVERFLOW, EXT_0_PAL, BLEND, OBJWIN); \
754 } \
755 } \
756 }
757
758void DSVideoSoftwareRendererDrawBackgroundExt0(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
759 int sizeAdjusted = 0x8000 << background->size;
760
761 BACKGROUND_BITMAP_INIT;
762
763 color_t* mainPalette = background->extPalette;
764 if (variant) {
765 mainPalette = background->variantPalette;
766 }
767 if (!mainPalette) {
768 mainPalette = renderer->normalPalette;
769 if (variant) {
770 mainPalette = renderer->variantPalette;
771 }
772 }
773 int paletteData;
774
775 uint16_t mapData;
776 uint8_t pixelData = 0;
777
778 int outX;
779 uint32_t* pixel;
780
781 if (!objwinSlowPath) {
782 if (!(flags & FLAG_TARGET_2)) {
783 DRAW_BACKGROUND_EXT_0(NoBlend, NO_OBJWIN);
784 } else {
785 DRAW_BACKGROUND_EXT_0(Blend, NO_OBJWIN);
786 }
787 } else {
788 if (!(flags & FLAG_TARGET_2)) {
789 DRAW_BACKGROUND_EXT_0(NoBlend, OBJWIN);
790 } else {
791 DRAW_BACKGROUND_EXT_0(Blend, OBJWIN);
792 }
793 }
794}
795
796#define DS_BACKGROUND_BITMAP_ITERATE(W, H) \
797 x += background->dx; \
798 y += background->dy; \
799 \
800 if (background->overflow) { \
801 localX = x & ((W << 8) - 1); \
802 localY = y & ((H << 8) - 1); \
803 } else if (x < 0 || y < 0 || (x >> 8) >= W || (y >> 8) >= H) { \
804 continue; \
805 } else { \
806 localX = x; \
807 localY = y; \
808 }
809
810void DSVideoSoftwareRendererDrawBackgroundExt1(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
811 BACKGROUND_BITMAP_INIT;
812
813 uint32_t screenBase = (background->screenBase & 0xFF00) * 8;
814 uint8_t color;
815 int width, height;
816 switch (background->size) {
817 case 0:
818 width = 128;
819 height = 128;
820 break;
821 case 1:
822 width = 256;
823 height = 256;
824 break;
825 case 2:
826 width = 512;
827 height = 256;
828 break;
829 case 3:
830 width = 512;
831 height = 512;
832 break;
833 }
834
835 int outX;
836 for (outX = renderer->start; outX < renderer->end; ++outX) {
837 DS_BACKGROUND_BITMAP_ITERATE(width, height);
838
839 if (!mosaicWait) {
840 uint32_t address = (localX >> 8) + (localY >> 8) * width + screenBase;
841 uint8_t* vram = (uint8_t*) renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
842 if (UNLIKELY(!vram)) {
843 continue;
844 }
845 color = vram[address & VRAM_BLOCK_MASK];
846 mosaicWait = mosaicH;
847 } else {
848 --mosaicWait;
849 }
850
851 uint32_t current = renderer->row[outX];
852 if (color && IS_WRITABLE(current)) {
853 if (!objwinSlowPath) {
854 _compositeBlendNoObjwin(renderer, outX, palette[color] | flags, current);
855 } else if (objwinForceEnable || (!(current & FLAG_OBJWIN)) == objwinOnly) {
856 color_t* currentPalette = (current & FLAG_OBJWIN) ? objwinPalette : palette;
857 unsigned mergedFlags = flags;
858 if (current & FLAG_OBJWIN) {
859 mergedFlags = objwinFlags;
860 }
861 _compositeBlendObjwin(renderer, outX, currentPalette[color] | mergedFlags, current);
862 }
863 }
864 }
865}
866
867void DSVideoSoftwareRendererDrawBackgroundExt2(struct GBAVideoSoftwareRenderer* renderer, struct GBAVideoSoftwareBackground* background, int inY) {
868 BACKGROUND_BITMAP_INIT;
869
870 uint32_t screenBase = (background->screenBase & 0xFF00) * 4;
871 uint32_t color;
872 int width, height;
873 switch (background->size) {
874 case 0:
875 width = 128;
876 height = 128;
877 break;
878 case 1:
879 width = 256;
880 height = 256;
881 break;
882 case 2:
883 width = 512;
884 height = 256;
885 break;
886 case 3:
887 width = 512;
888 height = 512;
889 break;
890 }
891
892 int outX;
893 for (outX = renderer->start; outX < renderer->end; ++outX) {
894 DS_BACKGROUND_BITMAP_ITERATE(width, height);
895
896 if (!mosaicWait) {
897 uint32_t address = ((localX >> 8) + (localY >> 8) * width + screenBase) << 1;
898 uint16_t* vram = renderer->d.vramBG[address >> VRAM_BLOCK_OFFSET];
899 if (UNLIKELY(!vram)) {
900 continue;
901 }
902 LOAD_16(color, address & VRAM_BLOCK_MASK, vram);
903#ifndef COLOR_16_BIT
904 unsigned color32;
905 color32 = 0;
906 color32 |= (color << 3) & 0xF8;
907 color32 |= (color << 6) & 0xF800;
908 color32 |= (color << 9) & 0xF80000;
909 color32 |= (color32 >> 5) & 0x070707;
910 color = color32;
911#elif COLOR_5_6_5
912 uint16_t color16 = 0;
913 color16 |= (color & 0x001F) << 11;
914 color16 |= (color & 0x03E0) << 1;
915 color16 |= (color & 0x7C00) >> 10;
916 color = color16;
917#endif
918 mosaicWait = mosaicH;
919 } else {
920 --mosaicWait;
921 }
922
923 uint32_t current = renderer->row[outX];
924 if (!objwinSlowPath || (!(current & FLAG_OBJWIN)) != objwinOnly) {
925 unsigned mergedFlags = flags;
926 if (current & FLAG_OBJWIN) {
927 mergedFlags = objwinFlags;
928 }
929 if (!variant) {
930 _compositeBlendObjwin(renderer, outX, color | mergedFlags, current);
931 } else if (renderer->blendEffect == BLEND_BRIGHTEN) {
932 _compositeBlendObjwin(renderer, outX, _brighten(color, renderer->bldy) | mergedFlags, current);
933 } else if (renderer->blendEffect == BLEND_DARKEN) {
934 _compositeBlendObjwin(renderer, outX, _darken(color, renderer->bldy) | mergedFlags, current);
935 }
936 }
937 }
938}