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fixed unswizzling bug

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This commit is contained in:
aap 2018-01-03 23:38:25 +01:00
parent 96c2ddca29
commit e9d53fd834
1 changed files with 12 additions and 3 deletions
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15
src/ps2/ps2raster.cpp
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@ -1430,7 +1430,7 @@ unswizzle(uint8 *dst, uint8 *src, int32 w, int32 h, int32 d)
return;
}
// this is more complicated...and not correct....
// this is more complicated...
uint8 *tmp = rwNewT(uint8, tw*th, MEMDUR_FUNCTION | ID_RASTERPS2);
unswizzle8(tmp, src, tw, th);
for(y = 0; y < h; y++)
@ -1508,8 +1508,17 @@ rasterToImage(Raster *raster)
out = image->pixels;
in = raster->lock(0);
if(depth == 4){
uint8 *in8 = rwNewT(uint8, w*h, MEMDUR_FUNCTION | ID_RASTERPS2);
for(uint32 i = 0; i < w*h/2; i++){
// Actually PSMT4 is transferred as PSMCT16 but
// apparently we can "uncompress" the indices into PSMT8
// and unswizzle as if transferred as PSMCT32
// Would be nice to understand this correctly some day
int minw, minh;
int th, tw;
transferMinSize(PSMT4, 4, &minw, &minh);
tw = max(w, minw);
th = max(h, minh);
uint8 *in8 = rwNewT(uint8, tw*th, MEMDUR_FUNCTION | ID_RASTERPS2);
for(uint32 i = 0; i < tw*th/2; i++){
in8[i*2+0] = in[i] & 0xF;
in8[i*2+1] = in[i] >> 4;
}