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[CHG] Little optimisation on GRRLIB_GetPixelFromtexImg and

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GRRLIB_SetPixelTotexImg
This commit is contained in:
N0NameN0 2009-02-05 22:14:27 +00:00
parent c8276275ea
commit e3e8ed4df7
1 changed files with 7 additions and 23 deletions
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30
template/source/GRRLIB/GRRLIB.c
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@ -441,23 +441,17 @@ bool GRRLIB_RectOnRect(int rect1x, int rect1y, int rect1w, int rect1h, int rect2
*/ */
u32 GRRLIB_GetPixelFromtexImg(int x, int y, GRRLIB_texImg tex){ u32 GRRLIB_GetPixelFromtexImg(int x, int y, GRRLIB_texImg tex){
u8 *truc = (u8*)tex.data; u8 *truc = (u8*)tex.data;
u32 x1, y1;
u8 r, g, b, a; u8 r, g, b, a;
u32 value;
u32 offset; u32 offset;
x1 = x >> 2; offset = (((y >> 2)<<4)*tex.w) + ((x >> 2)<<6) + (((y%4 << 2) + x%4 ) << 1); // Fuckin equation found by NoNameNo ;)
y1 = y >> 2;
offset = (y1*16*tex.w) + (x1*64) + ((y%4 * 4 + x%4 ) * 2); // Fuckin equation found by NoNameNo ;)
a=*(truc+offset); a=*(truc+offset);
r=*(truc+offset+1); r=*(truc+offset+1);
g=*(truc+offset+32); g=*(truc+offset+32);
b=*(truc+offset+33); b=*(truc+offset+33);
value = (r<<24) | (g<<16) | (b<<8) | a; return((r<<24) | (g<<16) | (b<<8) | a);
return(value);
} }
/** /**
@ -469,26 +463,16 @@ u32 GRRLIB_GetPixelFromtexImg(int x, int y, GRRLIB_texImg tex){
*/ */
void GRRLIB_SetPixelTotexImg(int x, int y, GRRLIB_texImg tex, u32 color){ void GRRLIB_SetPixelTotexImg(int x, int y, GRRLIB_texImg tex, u32 color){
u8 *truc = (u8*)tex.data; u8 *truc = (u8*)tex.data;
u32 x1, y1;
u8 r, g, b, a;
u32 offset; u32 offset;
x1 = x >> 2; offset = (((y >> 2)<<4)*tex.w) + ((x >> 2)<<6) + (((y%4 << 2) + x%4 ) <<1); // Fuckin equation found by NoNameNo ;)
y1 = y >> 2;
offset = (y1*16*tex.w) + (x1*64) + ((y%4 * 4 + x%4 ) * 2); // Fuckin equation found by NoNameNo ;)
a=color & 0xFF; *(truc+offset)=color & 0xFF;
b=(color>>8) & 0xFF; *(truc+offset+1)=(color>>24) & 0xFF;
g=(color>>16) & 0xFF; *(truc+offset+32)=(color>>16) & 0xFF;
r=(color>>24) & 0xFF; *(truc+offset+33)=(color>>8) & 0xFF;
*(truc+offset)=a;
*(truc+offset+1)=r;
*(truc+offset+32)=g;
*(truc+offset+33)=b;
DCFlushRange(tex.data, tex.w * tex.h * 4); DCFlushRange(tex.data, tex.w * tex.h * 4);
} }
/** /**