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comparison src/video/xbios/SDL_xbios.c @ 314:bff64eba7721

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*** empty log message ***
author Sam Lantinga <slouken@libsdl.org>
date Fri, 22 Mar 2002 18:11:56 +0000
parents 2847fd83f115
children 189a6a3416c7
comparison
equal deleted inserted replaced
313:67ad846ed21c 314:bff64eba7721
617 } 617 }
618 618
619 static void XBIOS_UpdateRects(_THIS, int numrects, SDL_Rect *rects) 619 static void XBIOS_UpdateRects(_THIS, int numrects, SDL_Rect *rects)
620 { 620 {
621 SDL_Surface *surface; 621 SDL_Surface *surface;
622 622
623 surface = this->screen; 623 surface = this->screen;
624 624
625 XBIOS_FlipHWSurface(this, surface); 625 if ((surface->format->BitsPerPixel) == 8) {
626 void *destscr;
627 int destx;
628 int i;
629
630 /* Center on destination screen */
631 destscr = XBIOS_screens[XBIOS_fbnum];
632 destscr += XBIOS_pitch * ((XBIOS_height - surface->h) >> 1);
633 destx = (XBIOS_width - surface->w) >> 1;
634 destx &= ~15;
635 destscr += destx;
636
637 for (i=0;i<numrects;i++) {
638 void *source,*destination;
639 int x1,x2;
640
641 x1 = rects[i].x & ~15;
642 x2 = ((rects[i].x+rects[i].w) | 15) +1;
643
644 source = surface->pixels;
645 source += surface->pitch * rects[i].y;
646 source += x1;
647
648 destination = destscr;
649 destination += XBIOS_pitch * rects[i].y;
650 destination += x1;
651
652 /* Convert chunky to planar screen */
653 Atari_C2pConvert(
654 source,
655 destination,
656 x2-x1,
657 rects[i].h,
658 XBIOS_doubleline,
659 surface->pitch,
660 XBIOS_pitch
661 );
662 }
663 }
664
665 Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
666 Vsync();
667
668 if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
669 XBIOS_fbnum ^= 1;
670 if ((surface->format->BitsPerPixel) > 8) {
671 surface->pixels=XBIOS_screens[XBIOS_fbnum];
672 }
673 }
626 } 674 }
627 675
628 static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface) 676 static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface)
629 { 677 {
630 if ((surface->format->BitsPerPixel) == 8) { 678 if ((surface->format->BitsPerPixel) == 8) {