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Add very basic and slow DXT decoding to softgpu.

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Unknown W. Brackets 2013-10-05 12:25:18 -07:00
parent 2eb10c3b3f
commit 013e3f3be2
1 changed files with 21 additions and 0 deletions
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21
GPU/Software/Rasterizer.cpp
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@ -231,6 +231,27 @@ static inline u32 SampleNearest(int level, unsigned int u, unsigned int v, u8 *s
u8 val = (u & 1) ? (srcptr[0] >> 4) : (srcptr[0] & 0xF);
return LookupColor(gstate.transformClutIndex(val), level);
}
case GE_TFMT_DXT1:
{
DXT1Block *block = (DXT1Block *)srcptr + (v / 4) * (texbufwidthbits / 8 / 4) + (u / 4);
u32 data[4 * 4];
DecodeDXT1Block(data, block, 4);
return DecodeRGBA8888(data[4 * (v % 4) + (u % 4)]);
}
case GE_TFMT_DXT3:
{
DXT3Block *block = (DXT3Block *)srcptr + (v / 4) * (texbufwidthbits / 8 / 4) + (u / 4);
u32 data[4 * 4];
DecodeDXT3Block(data, block, 4);
return DecodeRGBA8888(data[4 * (v % 4) + (u % 4)]);
}
case GE_TFMT_DXT5:
{
DXT5Block *block = (DXT5Block *)srcptr + (v / 4) * (texbufwidthbits / 8 / 4) + (u / 4);
u32 data[4 * 4];
DecodeDXT5Block(data, block, 4);
return DecodeRGBA8888(data[4 * (v % 4) + (u % 4)]);
}
default:
ERROR_LOG_REPORT(G3D, "Software: Unsupported texture format: %x", texfmt);
return 0;