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Code Issues Releases Activity

Optimized blitWithRotate1.

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This commit is contained in:
Frank Zago
2009-05-27 04:10:35 +00:00
parent 5eb067e3fd
commit b38c279225
2 changed files with 19 additions and 11 deletions
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28
client/SDL_Extensions.cpp
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@@ -455,21 +455,29 @@ static void prepareOutRect(SDL_Rect &dst, const SDL_Rect *dstRect, const SDL_Rec
dst.h = std::max(0,std::min(dstRect->h - (dst.y - dstRect->y), clip_rect->y + clip_rect->h - dst.y));
}
void CSDL_Ext::blitWithRotate1(SDL_Surface *src,SDL_Rect * srcRect, SDL_Surface * dst, SDL_Rect * dstRect)//srcRect is not used, works with 8bpp sources and 24bpp dests
void CSDL_Ext::blitWithRotate1(const SDL_Surface *src, const SDL_Rect * srcRect, const SDL_Surface * dst, SDL_Rect * dstRect)//srcRect is not used, works with 8bpp sources and 24/32 bpp dests
{
Uint8 *dp, *sp = (Uint8 *)src->pixels;
for(int i=0; i<dstRect->h; i++)
Uint8 *sp = (Uint8 *)src->pixels;
const int bpp = dst->format->BytesPerPixel;
Uint8 *dporg = (Uint8 *)dst->pixels + dstRect->y*dst->pitch + (dstRect->x+dstRect->w)*bpp;
const SDL_Color * const colors = src->format->palette->colors;
for(int i=dstRect->h; i>0; i--, dporg += dst->pitch)
{
Uint8 *dp = dporg;
sp += src->w - dstRect->w;
dp = (Uint8 *)dst->pixels + (i+dstRect->y)*dst->pitch + (dstRect->x+dstRect->w)*dst->format->BytesPerPixel;
for(int j=0; j<dstRect->w; j++, sp++)
for(int j=dstRect->w; j>0; j--, sp++)
{
const SDL_Color * const color = src->format->palette->colors+(*sp);
if (dst->format->BytesPerPixel == 4)
if (bpp == 4)
*(--dp) = 0;
*(--dp) = color->r;
*(--dp) = color->g;
*(--dp) = color->b;
const SDL_Color color = colors[*sp];
*(--dp) = color.r;
*(--dp) = color.g;
*(--dp) = color.b;
}
}
}

2
client/SDL_Extensions.h
View File

@@ -60,7 +60,7 @@ namespace CSDL_Ext
Uint32 SDL_GetPixel(SDL_Surface *surface, const int & x, const int & y, bool colorByte = false);
SDL_Color SDL_GetPixelColor(SDL_Surface *surface, int x, int y); //returns color of pixel at given position
SDL_Surface * alphaTransform(SDL_Surface * src); //adds transparency and shadows (partial handling only; see examples of using for details)
void blitWithRotate1(SDL_Surface *src,SDL_Rect * srcRect, SDL_Surface * dst, SDL_Rect * dstRect);//srcRect is not used, works with 8bpp sources and 24bpp dests
void blitWithRotate1(const SDL_Surface *src, const SDL_Rect * srcRect, const SDL_Surface * dst, SDL_Rect * dstRect);//srcRect is not used, works with 8bpp sources and 24bpp dests
void blitWithRotate2(SDL_Surface *src,SDL_Rect * srcRect, SDL_Surface * dst, SDL_Rect * dstRect);//srcRect is not used, works with 8bpp sources and 24bpp dests
void blitWithRotate3(SDL_Surface *src,SDL_Rect * srcRect, SDL_Surface * dst, SDL_Rect * dstRect);//srcRect is not used, works with 8bpp sources and 24bpp dests
void blitWithRotate1clip(SDL_Surface *src,SDL_Rect * srcRect, SDL_Surface * dst, SDL_Rect * dstRect);//srcRect is not used, works with 8bpp sources and 24bpp dests preserving clip_rect