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Optimize DXT1 index order fixing.

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This commit is contained in:
Bartosz Taudul 2020-06-11 03:04:09 +02:00
parent aa3b0de1f5
commit 191ff93822
1 changed files with 5 additions and 4 deletions
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9
server/TracyTextureCompression.cpp
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@ -219,10 +219,11 @@ void TextureCompression::FixOrder( char* data, size_t blocks )
assert( blocks > 0 );
do
{
uint8_t tmp[4];
memcpy( tmp, data+4, 4 );
for( int k=0; k<4; k++ ) tmp[k] = DxtcIndexTable[(uint8_t)tmp[k]];
memcpy( data+4, tmp, 4 );
uint32_t res = 0;
uint32_t tmp;
memcpy( &tmp, data+4, 4 );
for( int k=0; k<4; k++ ) res |= DxtcIndexTable[(tmp >> (k*8)) & 0xFF] << (k*8);
memcpy( data+4, &res, 4 );
data += 8;
}
while( --blocks );