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comparison src/video/SDL_surface.c @ 5141:da10636e5eca

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Making the API simpler, scaling is always defined as linear interpolation and should be supported as much as possible on all renderers.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 31 Jan 2011 22:44:43 -0800
parents a130bc2f0a18
children e743b9c3f6d6
comparison
equal deleted inserted replaced
5140:e594f07297a9 5141:da10636e5eca
516 break; 516 break;
517 } 517 }
518 return 0; 518 return 0;
519 } 519 }
520 520
521 int
522 SDL_SetSurfaceScaleMode(SDL_Surface * surface, SDL_ScaleMode scaleMode)
523 {
524 int flags, status;
525
526 if (!surface) {
527 return -1;
528 }
529
530 status = 0;
531 flags = surface->map->info.flags;
532 surface->map->info.flags &= ~(SDL_COPY_NEAREST);
533 switch (scaleMode) {
534 case SDL_SCALEMODE_NONE:
535 break;
536 case SDL_SCALEMODE_FAST:
537 surface->map->info.flags |= SDL_COPY_NEAREST;
538 break;
539 case SDL_SCALEMODE_SLOW:
540 case SDL_SCALEMODE_BEST:
541 SDL_Unsupported();
542 surface->map->info.flags |= SDL_COPY_NEAREST;
543 status = -1;
544 break;
545 default:
546 SDL_Unsupported();
547 status = -1;
548 break;
549 }
550
551 if (surface->map->info.flags != flags) {
552 SDL_InvalidateMap(surface->map);
553 }
554 return status;
555 }
556
557 int
558 SDL_GetSurfaceScaleMode(SDL_Surface * surface, SDL_ScaleMode *scaleMode)
559 {
560 if (!surface) {
561 return -1;
562 }
563
564 if (!scaleMode) {
565 return 0;
566 }
567
568 switch (surface->map->info.flags & SDL_COPY_NEAREST) {
569 case SDL_COPY_NEAREST:
570 *scaleMode = SDL_SCALEMODE_FAST;
571 break;
572 default:
573 *scaleMode = SDL_SCALEMODE_NONE;
574 break;
575 }
576 return 0;
577 }
578
579 SDL_bool 521 SDL_bool
580 SDL_SetClipRect(SDL_Surface * surface, const SDL_Rect * rect) 522 SDL_SetClipRect(SDL_Surface * surface, const SDL_Rect * rect)
581 { 523 {
582 SDL_Rect full_rect; 524 SDL_Rect full_rect;
583 525