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comparison src/video/SDL_renderer_sw.c @ 1681:80a5e6a4e1e2 SDL-1.3

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Working on paletted display and texture support (two different issues)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 15 Jun 2006 07:07:07 +0000
parents 9488fca10677
children 396a35389351
comparison
equal deleted inserted replaced
1680:9488fca10677 1681:80a5e6a4e1e2
32 SDL_Texture * texture); 32 SDL_Texture * texture);
33 static int SDL_SW_QueryTexturePixels(SDL_Renderer * renderer, 33 static int SDL_SW_QueryTexturePixels(SDL_Renderer * renderer,
34 SDL_Texture * texture, void **pixels, 34 SDL_Texture * texture, void **pixels,
35 int *pitch); 35 int *pitch);
36 static int SDL_SW_SetTexturePalette(SDL_Renderer * renderer, 36 static int SDL_SW_SetTexturePalette(SDL_Renderer * renderer,
37 SDL_Texture * texture,
38 const SDL_Color * colors, int firstcolor,
39 int ncolors);
40 static int SDL_SW_GetTexturePalette(SDL_Renderer * renderer,
37 SDL_Texture * texture, SDL_Color * colors, 41 SDL_Texture * texture, SDL_Color * colors,
38 int firstcolor, int ncolors); 42 int firstcolor, int ncolors);
39 static int SDL_SW_UpdateTexture(SDL_Renderer * renderer, 43 static int SDL_SW_UpdateTexture(SDL_Renderer * renderer,
40 SDL_Texture * texture, SDL_Rect * rect, 44 SDL_Texture * texture, const SDL_Rect * rect,
41 const void *pixels, int pitch); 45 const void *pixels, int pitch);
42 static int SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, 46 static int SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
43 SDL_Rect * rect, int markDirty, void **pixels, 47 const SDL_Rect * rect, int markDirty,
44 int *pitch); 48 void **pixels, int *pitch);
45 static void SDL_SW_UnlockTexture(SDL_Renderer * renderer, 49 static void SDL_SW_UnlockTexture(SDL_Renderer * renderer,
46 SDL_Texture * texture); 50 SDL_Texture * texture);
47 static void SDL_SW_DirtyTexture(SDL_Renderer * renderer, 51 static void SDL_SW_DirtyTexture(SDL_Renderer * renderer,
48 SDL_Texture * texture, int numrects, 52 SDL_Texture * texture, int numrects,
49 SDL_Rect * rects); 53 const SDL_Rect * rects);
50 static void SDL_SW_SelectRenderTexture(SDL_Renderer * renderer, 54 static void SDL_SW_SelectRenderTexture(SDL_Renderer * renderer,
51 SDL_Texture * texture); 55 SDL_Texture * texture);
52 static void SDL_SW_RenderFill(SDL_Renderer * renderer, SDL_Rect * rect, 56 static void SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
53 Uint32 color); 57 Uint32 color);
54 static int SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, 58 static int SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
55 SDL_Rect * srcrect, SDL_Rect * dstrect, 59 const SDL_Rect * srcrect,
56 int blendMode, int scaleMode); 60 const SDL_Rect * dstrect, int blendMode,
57 static int SDL_SW_RenderReadPixels(SDL_Renderer * renderer, SDL_Rect * rect, 61 int scaleMode);
58 void *pixels, int pitch); 62 static int SDL_SW_RenderReadPixels(SDL_Renderer * renderer,
59 static int SDL_SW_RenderWritePixels(SDL_Renderer * renderer, SDL_Rect * rect, 63 const SDL_Rect * rect, void *pixels,
60 const void *pixels, int pitch); 64 int pitch);
65 static int SDL_SW_RenderWritePixels(SDL_Renderer * renderer,
66 const SDL_Rect * rect, const void *pixels,
67 int pitch);
61 static void SDL_SW_RenderPresent(SDL_Renderer * renderer); 68 static void SDL_SW_RenderPresent(SDL_Renderer * renderer);
62 static void SDL_SW_DestroyTexture(SDL_Renderer * renderer, 69 static void SDL_SW_DestroyTexture(SDL_Renderer * renderer,
63 SDL_Texture * texture); 70 SDL_Texture * texture);
64 static void SDL_SW_DestroyRenderer(SDL_Renderer * renderer); 71 static void SDL_SW_DestroyRenderer(SDL_Renderer * renderer);
65 72
132 SDL_zerop(data); 139 SDL_zerop(data);
133 140
134 renderer->CreateTexture = SDL_SW_CreateTexture; 141 renderer->CreateTexture = SDL_SW_CreateTexture;
135 renderer->QueryTexturePixels = SDL_SW_QueryTexturePixels; 142 renderer->QueryTexturePixels = SDL_SW_QueryTexturePixels;
136 renderer->SetTexturePalette = SDL_SW_SetTexturePalette; 143 renderer->SetTexturePalette = SDL_SW_SetTexturePalette;
144 renderer->GetTexturePalette = SDL_SW_GetTexturePalette;
137 renderer->UpdateTexture = SDL_SW_UpdateTexture; 145 renderer->UpdateTexture = SDL_SW_UpdateTexture;
138 renderer->LockTexture = SDL_SW_LockTexture; 146 renderer->LockTexture = SDL_SW_LockTexture;
139 renderer->UnlockTexture = SDL_SW_UnlockTexture; 147 renderer->UnlockTexture = SDL_SW_UnlockTexture;
140 renderer->DirtyTexture = SDL_SW_DirtyTexture; 148 renderer->DirtyTexture = SDL_SW_DirtyTexture;
141 renderer->SelectRenderTexture = SDL_SW_SelectRenderTexture; 149 renderer->SelectRenderTexture = SDL_SW_SelectRenderTexture;
233 return 0; 241 return 0;
234 } 242 }
235 243
236 static int 244 static int
237 SDL_SW_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture, 245 SDL_SW_SetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
246 const SDL_Color * colors, int firstcolor,
247 int ncolors)
248 {
249 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
250
251 SDL_SetColors(surface, colors, firstcolor, ncolors);
252 return 0;
253 }
254
255 static int
256 SDL_SW_GetTexturePalette(SDL_Renderer * renderer, SDL_Texture * texture,
238 SDL_Color * colors, int firstcolor, int ncolors) 257 SDL_Color * colors, int firstcolor, int ncolors)
239 { 258 {
240 SDL_Surface *surface = (SDL_Surface *) texture->driverdata; 259 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
241 260
242 SDL_SetColors(surface, colors, firstcolor, ncolors); 261 SDL_memcpy(colors, &surface->format->palette->colors[firstcolor],
262 ncolors * sizeof(*colors));
243 return 0; 263 return 0;
244 } 264 }
245 265
246 static int 266 static int
247 SDL_SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture, 267 SDL_SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
248 SDL_Rect * rect, const void *pixels, int pitch) 268 const SDL_Rect * rect, const void *pixels, int pitch)
249 { 269 {
250 SDL_Surface *surface = (SDL_Surface *) texture->driverdata; 270 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
251 Uint8 *src, *dst; 271 Uint8 *src, *dst;
252 int row; 272 int row;
253 size_t length; 273 size_t length;
265 return 0; 285 return 0;
266 } 286 }
267 287
268 static int 288 static int
269 SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, 289 SDL_SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
270 SDL_Rect * rect, int markDirty, void **pixels, int *pitch) 290 const SDL_Rect * rect, int markDirty, void **pixels,
291 int *pitch)
271 { 292 {
272 SDL_Surface *surface = (SDL_Surface *) texture->driverdata; 293 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
273 294
274 *pixels = 295 *pixels =
275 (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch + 296 (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
283 { 304 {
284 } 305 }
285 306
286 static void 307 static void
287 SDL_SW_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, 308 SDL_SW_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
288 int numrects, SDL_Rect * rects) 309 int numrects, const SDL_Rect * rects)
289 { 310 {
290 } 311 }
291 312
292 static void 313 static void
293 SDL_SW_SelectRenderTexture(SDL_Renderer * renderer, SDL_Texture * texture) 314 SDL_SW_SelectRenderTexture(SDL_Renderer * renderer, SDL_Texture * texture)
295 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata; 316 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
296 data->target = (SDL_Surface *) texture->driverdata; 317 data->target = (SDL_Surface *) texture->driverdata;
297 } 318 }
298 319
299 static void 320 static void
300 SDL_SW_RenderFill(SDL_Renderer * renderer, SDL_Rect * rect, Uint32 color) 321 SDL_SW_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect,
301 { 322 Uint32 color)
302 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata; 323 {
324 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
325 SDL_Rect real_rect = *rect;
303 Uint8 r, g, b, a; 326 Uint8 r, g, b, a;
304 327
305 a = (Uint8) ((color >> 24) & 0xFF); 328 a = (Uint8) ((color >> 24) & 0xFF);
306 r = (Uint8) ((color >> 16) & 0xFF); 329 r = (Uint8) ((color >> 16) & 0xFF);
307 g = (Uint8) ((color >> 8) & 0xFF); 330 g = (Uint8) ((color >> 8) & 0xFF);
308 b = (Uint8) (color & 0xFF); 331 b = (Uint8) (color & 0xFF);
309 color = SDL_MapRGBA(data->target->format, r, g, b, a); 332 color = SDL_MapRGBA(data->target->format, r, g, b, a);
310 333
311 SDL_FillRect(data->target, rect, color); 334 SDL_FillRect(data->target, &real_rect, color);
312 } 335 }
313 336
314 static int 337 static int
315 SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, 338 SDL_SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
316 SDL_Rect * srcrect, SDL_Rect * dstrect, int blendMode, 339 const SDL_Rect * srcrect, const SDL_Rect * dstrect,
317 int scaleMode) 340 int blendMode, int scaleMode)
318 { 341 {
319 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata; 342 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
320 SDL_Surface *surface = (SDL_Surface *) texture->driverdata; 343 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
344 SDL_Rect real_srcrect = *srcrect;
345 SDL_Rect real_dstrect = *dstrect;
321 346
322 if (blendMode & (SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend)) { 347 if (blendMode & (SDL_TextureBlendMode_Mask | SDL_TextureBlendMode_Blend)) {
323 SDL_SetAlpha(surface, SDL_SRCALPHA, 0); 348 SDL_SetAlpha(surface, SDL_SRCALPHA, 0);
324 } else { 349 } else {
325 SDL_SetAlpha(surface, 0, 0); 350 SDL_SetAlpha(surface, 0, 0);
326 } 351 }
327 if (scaleMode != SDL_TextureScaleMode_None && 352 if (scaleMode != SDL_TextureScaleMode_None &&
328 (srcrect->w != dstrect->w || srcrect->h != dstrect->h)) { 353 (srcrect->w != dstrect->w || srcrect->h != dstrect->h)) {
329 return SDL_SoftStretch(surface, srcrect, data->target, dstrect); 354 return SDL_SoftStretch(surface, &real_srcrect, data->target,
355 &real_dstrect);
330 } else { 356 } else {
331 return SDL_LowerBlit(surface, srcrect, data->target, dstrect); 357 return SDL_LowerBlit(surface, &real_srcrect, data->target,
332 } 358 &real_dstrect);
333 } 359 }
334 360 }
335 static int 361
336 SDL_SW_RenderReadPixels(SDL_Renderer * renderer, SDL_Rect * rect, 362 static int
363 SDL_SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
337 void *pixels, int pitch) 364 void *pixels, int pitch)
338 { 365 {
339 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata; 366 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
340 SDL_Surface *surface = data->target; 367 SDL_Surface *surface = data->target;
341 Uint8 *src, *dst; 368 Uint8 *src, *dst;
354 } 381 }
355 return 0; 382 return 0;
356 } 383 }
357 384
358 static int 385 static int
359 SDL_SW_RenderWritePixels(SDL_Renderer * renderer, SDL_Rect * rect, 386 SDL_SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
360 const void *pixels, int pitch) 387 const void *pixels, int pitch)
361 { 388 {
362 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata; 389 SDL_SW_RenderData *data = (SDL_SW_RenderData *) renderer->driverdata;
363 SDL_Surface *surface = data->target; 390 SDL_Surface *surface = data->target;
364 Uint8 *src, *dst; 391 Uint8 *src, *dst;