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Fixed scaled blitting for complex blit operations (e.g. color modulation and alpha blending)

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This commit is contained in:
Sam Lantinga
2012-10-01 00:40:26 -07:00
parent b53cdc758a
commit 484c24ab6a
1 changed files with 9 additions and 1 deletions
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10
src/video/SDL_surface.c
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@@ -684,6 +684,12 @@ int
SDL_LowerBlitScaled(SDL_Surface * src, SDL_Rect * srcrect,
SDL_Surface * dst, SDL_Rect * dstrect)
{
static const Uint32 complex_copy_flags = (
SDL_COPY_MODULATE_COLOR | SDL_COPY_MODULATE_ALPHA |
SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD |
SDL_COPY_COLORKEY
);
/* Save off the original dst width, height */
int dstW = dstrect->w;
int dstH = dstrect->h;
@@ -710,7 +716,9 @@ SDL_LowerBlitScaled(SDL_Surface * src, SDL_Rect * srcrect,
src->map->info.flags |= SDL_COPY_NEAREST;
if ( src->format->format == dst->format->format && !SDL_ISPIXELFORMAT_INDEXED(src->format->format) ) {
if ( !(src->map->info.flags & complex_copy_flags) &&
src->format->format == dst->format->format &&
!SDL_ISPIXELFORMAT_INDEXED(src->format->format) ) {
return SDL_SoftStretch( src, &final_src, dst, &final_dst );
} else {
return SDL_LowerBlit( src, &final_src, dst, &final_dst );