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Scaling fallbacks for the SW renderer (bug 5313)
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@ -927,17 +927,52 @@ SDL_PrivateLowerBlitScaled(SDL_Surface * src, SDL_Rect * srcrect,
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SDL_InvalidateMap(src->map);
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}
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if ( !(src->map->info.flags & complex_copy_flags) &&
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src->format->format == dst->format->format &&
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!SDL_ISPIXELFORMAT_INDEXED(src->format->format) ) {
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if (scaleMode != SDL_ScaleModeNearest && src->format->BytesPerPixel == 4 && src->format->format != SDL_PIXELFORMAT_ARGB2101010) {
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return SDL_SoftStretchLinear(src, srcrect, dst, dstrect);
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} else {
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if (scaleMode == SDL_ScaleModeNearest) {
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if ( !(src->map->info.flags & complex_copy_flags) &&
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src->format->format == dst->format->format &&
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!SDL_ISPIXELFORMAT_INDEXED(src->format->format) ) {
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return SDL_SoftStretch( src, srcrect, dst, dstrect );
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} else {
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return SDL_LowerBlit( src, srcrect, dst, dstrect );
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}
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} else {
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return SDL_LowerBlit( src, srcrect, dst, dstrect );
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if ( !(src->map->info.flags & complex_copy_flags) &&
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src->format->format == dst->format->format &&
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!SDL_ISPIXELFORMAT_INDEXED(src->format->format) &&
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src->format->BytesPerPixel == 4 &&
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src->format->format != SDL_PIXELFORMAT_ARGB2101010) {
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/* fast path */
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return SDL_SoftStretchLinear(src, srcrect, dst, dstrect);
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} else {
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/* Use an intermediate surface */
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SDL_Surface *tmp;
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int ret;
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SDL_Rect tmprect;
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Uint8 r, g, b, a;
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Uint8 alpha;
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SDL_BlendMode blendMode;
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tmp = SDL_CreateRGBSurfaceWithFormat(src->flags, dstrect->w, dstrect->h, 0, src->format->format);
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SDL_GetSurfaceColorMod(src, &r, &g, &b);
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SDL_GetSurfaceAlphaMod(src, &alpha);
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SDL_GetSurfaceBlendMode(src, &blendMode);
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SDL_SoftStretchLinear(src, srcrect, tmp, NULL);
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SDL_SetSurfaceColorMod(tmp, r, g, b);
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SDL_SetSurfaceAlphaMod(tmp, alpha);
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SDL_SetSurfaceBlendMode(tmp, blendMode);
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tmprect.x = 0;
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tmprect.y = 0;
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tmprect.w = dstrect->w;
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tmprect.h = dstrect->h;
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ret = SDL_LowerBlit(tmp, &tmprect, dst, dstrect);
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SDL_FreeSurface(tmp);
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return ret;
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}
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}
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}
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