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comparison src/video/SDL_surface.c @ 5143:e743b9c3f6d6

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Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 31 Jan 2011 23:23:57 -0800
parents da10636e5eca
children d976b67150c5
comparison
equal deleted inserted replaced
5142:57851a238c8f 5143:e743b9c3f6d6
446 return -1; 446 return -1;
447 } 447 }
448 448
449 status = 0; 449 status = 0;
450 flags = surface->map->info.flags; 450 flags = surface->map->info.flags;
451 surface->map->info.flags &= 451 surface->map->info.flags &= ~(SDL_COPY_BLEND | SDL_COPY_ADD);
452 ~(SDL_COPY_MASK | SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD);
453 switch (blendMode) { 452 switch (blendMode) {
454 case SDL_BLENDMODE_NONE: 453 case SDL_BLENDMODE_NONE:
455 break;
456 case SDL_BLENDMODE_MASK:
457 surface->map->info.flags |= SDL_COPY_MASK;
458 break; 454 break;
459 case SDL_BLENDMODE_BLEND: 455 case SDL_BLENDMODE_BLEND:
460 surface->map->info.flags |= SDL_COPY_BLEND; 456 surface->map->info.flags |= SDL_COPY_BLEND;
461 break; 457 break;
462 case SDL_BLENDMODE_ADD: 458 case SDL_BLENDMODE_ADD:
463 surface->map->info.flags |= SDL_COPY_ADD; 459 surface->map->info.flags |= SDL_COPY_ADD;
464 break; 460 break;
465 case SDL_BLENDMODE_MOD:
466 surface->map->info.flags |= SDL_COPY_MOD;
467 break;
468 default: 461 default:
469 SDL_Unsupported(); 462 SDL_Unsupported();
470 status = -1; 463 status = -1;
471 break; 464 break;
472 } 465 }
494 487
495 if (!blendMode) { 488 if (!blendMode) {
496 return 0; 489 return 0;
497 } 490 }
498 491
499 switch (surface->map-> 492 switch (surface->map->info.flags & (SDL_COPY_BLEND | SDL_COPY_ADD)) {
500 info.flags & (SDL_COPY_MASK | SDL_COPY_BLEND | SDL_COPY_ADD |
501 SDL_COPY_MOD)) {
502 case SDL_COPY_MASK:
503 *blendMode = SDL_BLENDMODE_MASK;
504 break;
505 case SDL_COPY_BLEND: 493 case SDL_COPY_BLEND:
506 *blendMode = SDL_BLENDMODE_BLEND; 494 *blendMode = SDL_BLENDMODE_BLEND;
507 break; 495 break;
508 case SDL_COPY_ADD: 496 case SDL_COPY_ADD:
509 *blendMode = SDL_BLENDMODE_ADD; 497 *blendMode = SDL_BLENDMODE_ADD;
510 break;
511 case SDL_COPY_MOD:
512 *blendMode = SDL_BLENDMODE_MOD;
513 break; 498 break;
514 default: 499 default:
515 *blendMode = SDL_BLENDMODE_NONE; 500 *blendMode = SDL_BLENDMODE_NONE;
516 break; 501 break;
517 } 502 }