Mercurial > sdl-ios-xcode
comparison src/video/nds/SDL_ndsrender.c @ 2735:204be4fc2726
Final merge of Google Summer of Code 2008 work...
Port SDL 1.3 to the Nintendo DS
by Darren Alton, mentored by Sam Lantinga
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 27 Aug 2008 15:10:03 +0000 |
parents | |
children | 27cb878a278e |
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1 /* | |
2 SDL - Simple DirectMedia Layer | |
3 Copyright (C) 1997-2006 Sam Lantinga | |
4 | |
5 This library is free software; you can redistribute it and/or | |
6 modify it under the terms of the GNU Lesser General Public | |
7 License as published by the Free Software Foundation; either | |
8 version 2.1 of the License, or (at your option) any later version. | |
9 | |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 Lesser General Public License for more details. | |
14 | |
15 You should have received a copy of the GNU Lesser General Public | |
16 License along with this library; if not, write to the Free Software | |
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | |
19 Sam Lantinga | |
20 slouken@libsdl.org | |
21 */ | |
22 | |
23 #include <stdio.h> | |
24 #include <stdlib.h> | |
25 #include <nds.h> | |
26 #include <nds/arm9/video.h> | |
27 #include <nds/arm9/sprite.h> | |
28 #include <nds/arm9/trig_lut.h> | |
29 | |
30 #include "SDL_config.h" | |
31 | |
32 #include "SDL_video.h" | |
33 #include "../SDL_sysvideo.h" | |
34 #include "../SDL_yuv_sw_c.h" | |
35 #include "../SDL_renderer_sw.h" | |
36 | |
37 /* NDS sprite-related functions */ | |
38 #define SPRITE_DMA_CHANNEL 3 | |
39 #define SPRITE_ANGLE_MASK 0x01FF | |
40 | |
41 void | |
42 NDS_OAM_Update(tOAM * oam, int sub) | |
43 { | |
44 DC_FlushAll(); | |
45 dmaCopyHalfWords(SPRITE_DMA_CHANNEL, oam->spriteBuffer, | |
46 sub ? OAM_SUB : OAM, SPRITE_COUNT * sizeof(SpriteEntry)); | |
47 } | |
48 | |
49 void | |
50 NDS_OAM_RotateSprite(SpriteRotation * spriteRotation, u16 angle) | |
51 { | |
52 s16 s = SIN[angle & SPRITE_ANGLE_MASK] >> 4; | |
53 s16 c = COS[angle & SPRITE_ANGLE_MASK] >> 4; | |
54 | |
55 spriteRotation->hdx = c; | |
56 spriteRotation->hdy = s; | |
57 spriteRotation->vdx = -s; | |
58 spriteRotation->vdy = c; | |
59 } | |
60 | |
61 void | |
62 NDS_OAM_Init(tOAM * oam, int sub) | |
63 { | |
64 int i; | |
65 for (i = 0; i < SPRITE_COUNT; i++) { | |
66 oam->spriteBuffer[i].attribute[0] = ATTR0_DISABLED; | |
67 oam->spriteBuffer[i].attribute[1] = 0; | |
68 oam->spriteBuffer[i].attribute[2] = 0; | |
69 } | |
70 for (i = 0; i < MATRIX_COUNT; i++) { | |
71 NDS_OAM_RotateSprite(&(oam->matrixBuffer[i]), 0); | |
72 } | |
73 swiWaitForVBlank(); | |
74 NDS_OAM_Update(oam, sub); | |
75 } | |
76 | |
77 void | |
78 NDS_OAM_HideSprite(SpriteEntry * spriteEntry) | |
79 { | |
80 spriteEntry->isRotoscale = 0; | |
81 spriteEntry->isHidden = 1; | |
82 } | |
83 | |
84 void | |
85 NDS_OAM_ShowSprite(SpriteEntry * spriteEntry, int affine, int double_bound) | |
86 { | |
87 if (affine) { | |
88 spriteEntry->isRotoscale = 1; | |
89 spriteEntry->rsDouble = double_bound; | |
90 } else { | |
91 spriteEntry->isHidden = 0; | |
92 } | |
93 } | |
94 | |
95 | |
96 /* SDL NDS renderer implementation */ | |
97 | |
98 static SDL_Renderer *NDS_CreateRenderer(SDL_Window * window, Uint32 flags); | |
99 static int NDS_ActivateRenderer(SDL_Renderer * renderer); | |
100 static int NDS_DisplayModeChanged(SDL_Renderer * renderer); | |
101 static int NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture); | |
102 static int NDS_QueryTexturePixels(SDL_Renderer * renderer, | |
103 SDL_Texture * texture, void **pixels, | |
104 int *pitch); | |
105 static int NDS_SetTexturePalette(SDL_Renderer * renderer, | |
106 SDL_Texture * texture, | |
107 const SDL_Color * colors, int firstcolor, | |
108 int ncolors); | |
109 static int NDS_GetTexturePalette(SDL_Renderer * renderer, | |
110 SDL_Texture * texture, SDL_Color * colors, | |
111 int firstcolor, int ncolors); | |
112 static int NDS_SetTextureColorMod(SDL_Renderer * renderer, | |
113 SDL_Texture * texture); | |
114 static int NDS_SetTextureAlphaMod(SDL_Renderer * renderer, | |
115 SDL_Texture * texture); | |
116 static int NDS_SetTextureBlendMode(SDL_Renderer * renderer, | |
117 SDL_Texture * texture); | |
118 static int NDS_SetTextureScaleMode(SDL_Renderer * renderer, | |
119 SDL_Texture * texture); | |
120 static int NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture, | |
121 const SDL_Rect * rect, const void *pixels, | |
122 int pitch); | |
123 static int NDS_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, | |
124 const SDL_Rect * rect, int markDirty, | |
125 void **pixels, int *pitch); | |
126 static void NDS_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture); | |
127 static void NDS_DirtyTexture(SDL_Renderer * renderer, | |
128 SDL_Texture * texture, int numrects, | |
129 const SDL_Rect * rects); | |
130 static int NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, | |
131 Uint8 b, Uint8 a, const SDL_Rect * rect); | |
132 static int NDS_RenderCopy(SDL_Renderer * renderer, | |
133 SDL_Texture * texture, | |
134 const SDL_Rect * srcrect, const SDL_Rect * dstrect); | |
135 static void NDS_RenderPresent(SDL_Renderer * renderer); | |
136 static void NDS_DestroyTexture(SDL_Renderer * renderer, | |
137 SDL_Texture * texture); | |
138 static void NDS_DestroyRenderer(SDL_Renderer * renderer); | |
139 | |
140 | |
141 SDL_RenderDriver NDS_RenderDriver = { | |
142 NDS_CreateRenderer, | |
143 {"nds", /* char* name */ | |
144 (SDL_RENDERER_SINGLEBUFFER | SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTDISCARD | SDL_RENDERER_PRESENTVSYNC), /* u32 flags */ | |
145 (SDL_TEXTUREMODULATE_NONE), /* u32 mod_modes */ | |
146 (SDL_TEXTUREBLENDMODE_MASK), /* u32 blend_modes */ | |
147 (SDL_TEXTURESCALEMODE_FAST), /* u32 scale_modes */ | |
148 3, /* u32 num_texture_formats */ | |
149 { | |
150 SDL_PIXELFORMAT_INDEX8, | |
151 SDL_PIXELFORMAT_ABGR1555, | |
152 SDL_PIXELFORMAT_BGR555, | |
153 }, /* u32 texture_formats[20] */ | |
154 (256), /* int max_texture_width */ | |
155 (256), /* int max_texture_height */ | |
156 } | |
157 }; | |
158 | |
159 typedef struct | |
160 { | |
161 bg_attribute *bg; /* backgrounds */ | |
162 tOAM oam_copy; /* sprites */ | |
163 u8 bg_taken[4]; | |
164 int sub; | |
165 } NDS_RenderData; | |
166 | |
167 typedef struct | |
168 { | |
169 enum | |
170 { NDSTX_BG, NDSTX_SPR } type; /* represented in a bg or sprite. */ | |
171 int hw_index; /* sprite: index in the OAM. / bg: 2 or 3. */ | |
172 struct | |
173 { | |
174 int hdx, hdy, vdx, vdy; /* affine transformation, used for scaling. */ | |
175 int pitch, bpp; /* some useful info */ | |
176 } dim; | |
177 u16 *vram_pixels; /* where the pixel data is stored (a pointer into VRAM) */ | |
178 u16 *vram_palette; /* where the palette data is stored if it's indexed. */ | |
179 /*int size; */ | |
180 } NDS_TextureData; | |
181 | |
182 | |
183 | |
184 SDL_Renderer * | |
185 NDS_CreateRenderer(SDL_Window * window, Uint32 flags) | |
186 { | |
187 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); | |
188 SDL_DisplayMode *displayMode = &display->current_mode; | |
189 SDL_Renderer *renderer; | |
190 NDS_RenderData *data; | |
191 int i, n; | |
192 int bpp; | |
193 Uint32 Rmask, Gmask, Bmask, Amask; | |
194 | |
195 if (!SDL_PixelFormatEnumToMasks(displayMode->format, &bpp, | |
196 &Rmask, &Gmask, &Bmask, &Amask)) { | |
197 SDL_SetError("Unknown display format"); | |
198 return NULL; | |
199 } | |
200 switch (displayMode->format) { | |
201 case SDL_PIXELFORMAT_INDEX8: | |
202 case SDL_PIXELFORMAT_ABGR1555: | |
203 case SDL_PIXELFORMAT_BGR555: | |
204 /* okay */ | |
205 break; | |
206 case SDL_PIXELFORMAT_RGB555: | |
207 case SDL_PIXELFORMAT_RGB565: | |
208 case SDL_PIXELFORMAT_ARGB1555: | |
209 /* we'll take these too for now */ | |
210 break; | |
211 default: | |
212 SDL_SetError("Warning: wrong display format for NDS!\n"); | |
213 break; | |
214 } | |
215 | |
216 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer)); | |
217 if (!renderer) { | |
218 SDL_OutOfMemory(); | |
219 return NULL; | |
220 } | |
221 | |
222 data = (NDS_RenderData *) SDL_malloc(sizeof(*data)); | |
223 if (!data) { | |
224 NDS_DestroyRenderer(renderer); | |
225 SDL_OutOfMemory(); | |
226 return NULL; | |
227 } | |
228 SDL_zerop(data); | |
229 | |
230 renderer->RenderFill = NDS_RenderFill; | |
231 renderer->RenderCopy = NDS_RenderCopy; | |
232 renderer->RenderPresent = NDS_RenderPresent; | |
233 renderer->DestroyRenderer = NDS_DestroyRenderer; | |
234 renderer->info.name = NDS_RenderDriver.info.name; | |
235 renderer->info.flags = 0; | |
236 renderer->window = window->id; | |
237 renderer->driverdata = data; | |
238 renderer->CreateTexture = NDS_CreateTexture; | |
239 renderer->QueryTexturePixels = NDS_QueryTexturePixels; | |
240 renderer->SetTexturePalette = NDS_SetTexturePalette; | |
241 renderer->GetTexturePalette = NDS_GetTexturePalette; | |
242 renderer->SetTextureColorMod = NDS_SetTextureColorMod; | |
243 renderer->SetTextureAlphaMod = NDS_SetTextureAlphaMod; | |
244 renderer->SetTextureBlendMode = NDS_SetTextureBlendMode; | |
245 renderer->SetTextureScaleMode = NDS_SetTextureScaleMode; | |
246 renderer->UpdateTexture = NDS_UpdateTexture; | |
247 renderer->LockTexture = NDS_LockTexture; | |
248 renderer->UnlockTexture = NDS_UnlockTexture; | |
249 renderer->DirtyTexture = NDS_DirtyTexture; | |
250 renderer->DestroyTexture = NDS_DestroyTexture; | |
251 | |
252 renderer->info.mod_modes = NDS_RenderDriver.info.mod_modes; | |
253 renderer->info.blend_modes = NDS_RenderDriver.info.blend_modes; | |
254 renderer->info.scale_modes = NDS_RenderDriver.info.scale_modes; | |
255 renderer->info.num_texture_formats = | |
256 NDS_RenderDriver.info.num_texture_formats; | |
257 SDL_memcpy(renderer->info.texture_formats, | |
258 NDS_RenderDriver.info.texture_formats, | |
259 sizeof(renderer->info.texture_formats)); | |
260 renderer->info.max_texture_width = | |
261 NDS_RenderDriver.info.max_texture_width; | |
262 renderer->info.max_texture_height = | |
263 NDS_RenderDriver.info.max_texture_height; | |
264 | |
265 data->sub = 0; /* TODO: this is hard-coded to the "main" screen. | |
266 figure out how to detect whether to set it to | |
267 "sub" screen. window->id, perhaps? */ | |
268 if (!data->sub) { | |
269 data->bg = &BACKGROUND; | |
270 } else { | |
271 data->bg = &BACKGROUND_SUB; | |
272 } | |
273 data->bg_taken[2] = data->bg_taken[3] = 0; | |
274 | |
275 NDS_OAM_Init(&(data->oam_copy), data->sub); /* init sprites. */ | |
276 | |
277 return renderer; | |
278 } | |
279 | |
280 static int | |
281 NDS_ActivateRenderer(SDL_Renderer * renderer) | |
282 { | |
283 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata; | |
284 | |
285 return 0; | |
286 } | |
287 | |
288 static int | |
289 NDS_DisplayModeChanged(SDL_Renderer * renderer) | |
290 { | |
291 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata; | |
292 | |
293 return 0; | |
294 } | |
295 | |
296 static int | |
297 NDS_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture) | |
298 { | |
299 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata; | |
300 NDS_TextureData *txdat = NULL; | |
301 int i; | |
302 int bpp; | |
303 Uint32 Rmask, Gmask, Bmask, Amask; | |
304 | |
305 if (!SDL_PixelFormatEnumToMasks | |
306 (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) { | |
307 SDL_SetError("Unknown texture format"); | |
308 return -1; | |
309 } | |
310 | |
311 /* conditional statements on w/h to place it as bg/sprite | |
312 depending on which one it fits. */ | |
313 if (texture->w <= 64 && texture->h <= 64) { | |
314 int whichspr = -1; | |
315 printf("Tried to make a sprite.\n"); | |
316 txdat->type = NDSTX_SPR; | |
317 for (i = 0; i < SPRITE_COUNT; ++i) { | |
318 if (data->oam_copy.spriteBuffer[i].attribute[0] & ATTR0_DISABLED) { | |
319 whichspr = i; | |
320 break; | |
321 } | |
322 } | |
323 if (whichspr >= 0) { | |
324 SpriteEntry *sprent = &(data->oam_copy.spriteBuffer[whichspr]); | |
325 int maxside = texture->w > texture->h ? texture->w : texture->h; | |
326 int pitch; | |
327 | |
328 texture->driverdata = SDL_calloc(1, sizeof(NDS_TextureData)); | |
329 txdat = (NDS_TextureData *) texture->driverdata; | |
330 if (!txdat) { | |
331 SDL_OutOfMemory(); | |
332 return -1; | |
333 } | |
334 | |
335 sprent->objMode = OBJMODE_BITMAP; | |
336 sprent->posX = 0; | |
337 sprent->posY = 0; | |
338 sprent->colMode = OBJCOLOR_16; /* OBJCOLOR_256 for INDEX8 */ | |
339 | |
340 /* the first 32 sprites get transformation matrices. | |
341 first come, first served */ | |
342 if (whichspr < MATRIX_COUNT) { | |
343 sprent->isRotoscale = 1; | |
344 sprent->rsMatrixIdx = whichspr; | |
345 } | |
346 | |
347 /* containing shape (square or 2:1 rectangles) */ | |
348 sprent->objShape = OBJSHAPE_SQUARE; | |
349 if (texture->w / 2 >= texture->h) { | |
350 sprent->objShape = OBJSHAPE_WIDE; | |
351 } else if (texture->h / 2 >= texture->w) { | |
352 sprent->objShape = OBJSHAPE_TALL; | |
353 } | |
354 | |
355 /* size in pixels */ | |
356 /* FIXME: "pitch" is hardcoded for 2bytes per pixel. */ | |
357 sprent->objSize = OBJSIZE_64; | |
358 pitch = 128; | |
359 if (maxside <= 8) { | |
360 sprent->objSize = OBJSIZE_8; | |
361 pitch = 16; | |
362 } else if (maxside <= 16) { | |
363 sprent->objSize = OBJSIZE_16; | |
364 pitch = 32; | |
365 } else if (maxside <= 32) { | |
366 sprent->objSize = OBJSIZE_32; | |
367 pitch = 64; | |
368 } | |
369 | |
370 /* FIXME: this is hard-coded and will obviously only work for one | |
371 sprite-texture. tells it to look at the beginning of SPRITE_GFX | |
372 for its pixels. */ | |
373 sprent->tileIdx = 0; | |
374 | |
375 /* now for the texture data */ | |
376 txdat->type = NDSTX_SPR; | |
377 txdat->hw_index = whichspr; | |
378 txdat->dim.hdx = 0x100; | |
379 txdat->dim.hdy = 0; | |
380 txdat->dim.vdx = 0; | |
381 txdat->dim.vdy = 0x100; | |
382 txdat->dim.pitch = pitch; | |
383 txdat->dim.bpp = bpp; | |
384 txdat->vram_pixels = (u16 *) (data->sub ? SPRITE_GFX_SUB : SPRITE_GFX); /* FIXME: use tileIdx*boundary | |
385 to point to proper location */ | |
386 } else { | |
387 SDL_SetError("Out of NDS sprites."); | |
388 } | |
389 } else if (texture->w <= 256 && texture->h <= 256) { | |
390 int whichbg = -1, base = 0; | |
391 if (!data->bg_taken[2]) { | |
392 whichbg = 2; | |
393 } else if (!data->bg_taken[3]) { | |
394 whichbg = 3; | |
395 base = 4; | |
396 } | |
397 if (whichbg >= 0) { | |
398 texture->driverdata = SDL_calloc(1, sizeof(NDS_TextureData)); | |
399 txdat = (NDS_TextureData *) texture->driverdata; | |
400 if (!txdat) { | |
401 SDL_OutOfMemory(); | |
402 return -1; | |
403 } | |
404 | |
405 /* this is hard-coded to being 256x256 ABGR1555 for now. */ | |
406 data->bg->control[whichbg] = (bpp == 8) ? | |
407 BG_BMP8_256x256 : BG_BMP16_256x256; | |
408 | |
409 data->bg->control[whichbg] |= BG_BMP_BASE(base); | |
410 | |
411 data->bg->scroll[whichbg].x = 0; | |
412 data->bg->scroll[whichbg].y = 0; | |
413 | |
414 txdat->type = NDSTX_BG; | |
415 txdat->hw_index = whichbg; | |
416 txdat->dim.hdx = 0x100; | |
417 txdat->dim.hdy = 0; | |
418 txdat->dim.vdx = 0; | |
419 txdat->dim.vdy = 0x100; | |
420 txdat->dim.pitch = 512; | |
421 txdat->dim.bpp = bpp; | |
422 txdat->vram_pixels = (u16 *) (data->sub ? | |
423 BG_BMP_RAM_SUB(base) : | |
424 BG_BMP_RAM(base)); | |
425 | |
426 /*txdat->size = txdat->dim.pitch * texture->h; */ | |
427 } else { | |
428 SDL_SetError("Out of NDS backgrounds."); | |
429 } | |
430 } else { | |
431 SDL_SetError("Texture too big for NDS hardware."); | |
432 } | |
433 | |
434 if (!texture->driverdata) { | |
435 return -1; | |
436 } | |
437 | |
438 return 0; | |
439 } | |
440 | |
441 static int | |
442 NDS_QueryTexturePixels(SDL_Renderer * renderer, SDL_Texture * texture, | |
443 void **pixels, int *pitch) | |
444 { | |
445 NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata; | |
446 *pixels = txdat->vram_pixels; | |
447 *pitch = txdat->dim.pitch; | |
448 return 0; | |
449 } | |
450 | |
451 static int | |
452 NDS_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture, | |
453 const SDL_Rect * rect, const void *pixels, int pitch) | |
454 { | |
455 NDS_TextureData *txdat; | |
456 Uint8 *src, *dst; | |
457 int row; | |
458 size_t length; | |
459 | |
460 txdat = (NDS_TextureData *) texture->driverdata; | |
461 | |
462 src = (Uint8 *) pixels; | |
463 dst = | |
464 (Uint8 *) txdat->vram_pixels + rect->y * txdat->dim.pitch + | |
465 rect->x * ((txdat->dim.bpp + 1) / 8); | |
466 length = rect->w * ((txdat->dim.bpp + 1) / 8); | |
467 | |
468 if (rect->w == texture->w) { | |
469 dmaCopy(src, dst, length * rect->h); | |
470 } else { | |
471 for (row = 0; row < rect->h; ++row) { | |
472 dmaCopy(src, dst, length); | |
473 src += pitch; | |
474 dst += txdat->dim.pitch; | |
475 } | |
476 } | |
477 | |
478 return 0; | |
479 } | |
480 | |
481 static int | |
482 NDS_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, | |
483 const SDL_Rect * rect, int markDirty, void **pixels, | |
484 int *pitch) | |
485 { | |
486 NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata; | |
487 | |
488 *pixels = (void *) ((u8 *) txdat->vram_pixels + rect->y | |
489 * txdat->dim.pitch + | |
490 rect->x * ((txdat->dim.bpp + 1) / 8)); | |
491 *pitch = txdat->dim.pitch; | |
492 | |
493 return 0; | |
494 } | |
495 | |
496 static void | |
497 NDS_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture) | |
498 { | |
499 /* stub! */ | |
500 } | |
501 | |
502 static void | |
503 NDS_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, | |
504 int numrects, const SDL_Rect * rects) | |
505 { | |
506 /* stub! */ | |
507 } | |
508 | |
509 static int | |
510 NDS_RenderFill(SDL_Renderer * renderer, Uint8 r, Uint8 g, Uint8 b, | |
511 Uint8 a, const SDL_Rect * rect) | |
512 { | |
513 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata; | |
514 SDL_Rect real_rect = *rect; | |
515 u16 color; | |
516 int i, j; | |
517 | |
518 color = RGB8(r, g, b); /* <-- macro in libnds that makes an ARGB1555 pixel */ | |
519 /* TODO: make a single-color sprite and stretch it. | |
520 calculate the "HDX" width modifier of the sprite by: | |
521 let S be the actual sprite's width (like, 32 pixels for example) | |
522 let R be the rectangle's width (maybe 50 pixels) | |
523 HDX = (R<<8) / S; | |
524 (it's fixed point, hence the bit shift. same goes for vertical. | |
525 be sure to use 32-bit int's for the bit shift before the division!) | |
526 */ | |
527 | |
528 return 0; | |
529 } | |
530 | |
531 static int | |
532 NDS_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, | |
533 const SDL_Rect * srcrect, const SDL_Rect * dstrect) | |
534 { | |
535 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata; | |
536 NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata; | |
537 SDL_Window *window = SDL_GetWindowFromID(renderer->window); | |
538 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); | |
539 int i; | |
540 int bpp = SDL_BYTESPERPIXEL(texture->format); | |
541 int pitch = txdat->dim.pitch; | |
542 | |
543 if (txdat->type == NDSTX_BG) { | |
544 bg_rotation *bgrot = (txdat->hw_index == 2) ? | |
545 &(data->bg->bg2_rotation) : &(data->bg->bg3_rotation); | |
546 bgrot->xdx = txdat->dim.hdx; | |
547 bgrot->xdy = txdat->dim.hdy; | |
548 bgrot->ydx = txdat->dim.vdx; | |
549 bgrot->ydy = txdat->dim.vdy; | |
550 bgrot->centerX = 0; | |
551 bgrot->centerY = 0; | |
552 | |
553 data->bg->scroll[txdat->hw_index].x = dstrect->x; | |
554 data->bg->scroll[txdat->hw_index].y = dstrect->y; | |
555 } else { | |
556 /* sprites not fully implemented yet */ | |
557 SpriteEntry *spr = &(data->oam_copy.spriteBuffer[txdat->hw_index]); | |
558 spr->posX = dstrect->x; | |
559 spr->posY = dstrect->y; | |
560 if (txdat->hw_index < MATRIX_COUNT && spr->isRotoscale) { | |
561 SpriteRotation *sprot = | |
562 &(data->oam_copy.matrixBuffer[txdat->hw_index]); | |
563 sprot->hdx = txdat->dim.hdx; | |
564 sprot->hdy = txdat->dim.hdy; | |
565 sprot->vdx = txdat->dim.vdx; | |
566 sprot->vdy = txdat->dim.vdy; | |
567 } | |
568 } | |
569 | |
570 return 0; | |
571 } | |
572 | |
573 | |
574 static void | |
575 NDS_RenderPresent(SDL_Renderer * renderer) | |
576 { | |
577 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata; | |
578 SDL_Window *window = SDL_GetWindowFromID(renderer->window); | |
579 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); | |
580 | |
581 /* update sprites */ | |
582 NDS_OAM_Update(&(data->oam_copy), data->sub); | |
583 /* vsync for NDS */ | |
584 if (renderer->info.flags & SDL_RENDERER_PRESENTVSYNC) { | |
585 swiWaitForVBlank(); | |
586 } | |
587 } | |
588 | |
589 static void | |
590 NDS_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture) | |
591 { | |
592 NDS_TextureData *txdat = texture->driverdata; | |
593 /* free anything else allocated for texture */ | |
594 SDL_free(txdat); | |
595 } | |
596 | |
597 static void | |
598 NDS_DestroyRenderer(SDL_Renderer * renderer) | |
599 { | |
600 NDS_RenderData *data = (NDS_RenderData *) renderer->driverdata; | |
601 SDL_Window *window = SDL_GetWindowFromID(renderer->window); | |
602 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); | |
603 int i; | |
604 | |
605 if (data) { | |
606 /* free anything else relevant if anything else is allocated. */ | |
607 SDL_free(data); | |
608 } | |
609 SDL_free(renderer); | |
610 } | |
611 | |
612 static int | |
613 NDS_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture, | |
614 const SDL_Color * colors, int firstcolor, int ncolors) | |
615 { | |
616 NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata; | |
617 /* set 8-bit modes in the background control registers | |
618 for backgrounds, BGn_CR |= BG_256_COLOR */ | |
619 | |
620 return 0; | |
621 } | |
622 | |
623 static int | |
624 NDS_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture, | |
625 SDL_Color * colors, int firstcolor, int ncolors) | |
626 { | |
627 NDS_TextureData *txdat = (NDS_TextureData *) texture->driverdata; | |
628 /* stub! */ | |
629 return 0; | |
630 } | |
631 | |
632 static int | |
633 NDS_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture) | |
634 { | |
635 /* stub! */ | |
636 return 0; | |
637 } | |
638 | |
639 static int | |
640 NDS_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture) | |
641 { | |
642 /* stub! */ | |
643 return 0; | |
644 } | |
645 | |
646 static int | |
647 NDS_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture) | |
648 { | |
649 /* stub! */ | |
650 return 0; | |
651 } | |
652 | |
653 static int | |
654 NDS_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture) | |
655 { | |
656 /* stub! (note: NDS hardware scaling is nearest neighbor.) */ | |
657 return 0; | |
658 } | |
659 | |
660 /* vi: set ts=4 sw=4 expandtab: */ |