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https://github.com/Relintai/sdl2_frt.git
synced 2024-12-20 22:16:49 +01:00
Fixed bug 5510 - simplify the scaling functions
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parent
dd6e02df63
commit
0b338bffe6
@ -40,7 +40,7 @@ SDL_Blit_Slow(SDL_BlitInfo * info)
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Uint32 dstpixel;
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Uint32 dstR, dstG, dstB, dstA;
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int srcy, srcx;
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int posy, posx;
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Uint32 posy, posx;
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int incy, incx;
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SDL_PixelFormat *src_fmt = info->src_fmt;
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SDL_PixelFormat *dst_fmt = info->dst_fmt;
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@ -49,7 +49,6 @@ SDL_Blit_Slow(SDL_BlitInfo * info)
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Uint32 rgbmask = ~src_fmt->Amask;
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Uint32 ckey = info->colorkey & rgbmask;
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srcy = 0;
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posy = 0;
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incy = (info->src_h << 16) / info->dst_h;
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incx = (info->src_w << 16) / info->dst_w;
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@ -58,21 +57,11 @@ SDL_Blit_Slow(SDL_BlitInfo * info)
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Uint8 *src = 0;
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Uint8 *dst = info->dst;
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int n = info->dst_w;
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srcx = -1;
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posx = 0x10000L;
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while (posy >= 0x10000L) {
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++srcy;
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posy -= 0x10000L;
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}
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posx = 0;
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srcy = posy >> 16;
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while (n--) {
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if (posx >= 0x10000L) {
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while (posx >= 0x10000L) {
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++srcx;
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posx -= 0x10000L;
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}
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src =
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(info->src + (srcy * info->src_pitch) + (srcx * srcbpp));
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}
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srcx = posx >> 16;
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src = (info->src + (srcy * info->src_pitch) + (srcx * srcbpp));
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if (src_fmt->Amask) {
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DISEMBLE_RGBA(src, srcbpp, src_fmt, srcpixel, srcR, srcG,
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srcB, srcA);
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@ -452,13 +452,12 @@ __EOF__
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if ( $scale ) {
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print FILE <<__EOF__;
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int srcy, srcx;
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int posy, posx;
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Uint32 posy, posx;
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int incy, incx;
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__EOF__
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print FILE <<__EOF__;
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srcy = 0;
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posy = 0;
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incy = (info->src_h << 16) / info->dst_h;
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incx = (info->src_w << 16) / info->dst_w;
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@ -467,22 +466,14 @@ __EOF__
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$format_type{$src} *src = 0;
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$format_type{$dst} *dst = ($format_type{$dst} *)info->dst;
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int n = info->dst_w;
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srcx = -1;
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posx = 0x10000L;
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while (posy >= 0x10000L) {
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++srcy;
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posy -= 0x10000L;
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}
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posx = 0;
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srcy = posy >> 16;
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while (n--) {
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if (posx >= 0x10000L) {
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while (posx >= 0x10000L) {
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++srcx;
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posx -= 0x10000L;
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}
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src = ($format_type{$src} *)(info->src + (srcy * info->src_pitch) + (srcx * $format_size{$src}));
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srcx = posx >> 16;
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src = ($format_type{$src} *)(info->src + (srcy * info->src_pitch) + (srcx * $format_size{$src}));
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__EOF__
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print FILE <<__EOF__;
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}
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__EOF__
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output_copycore($src, $dst, $modulate, $blend, $is_modulateA_done, $A_is_const_FF);
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print FILE <<__EOF__;
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