private static unsafe void compressMasked(byte *rgba, int mask, byte *block, SquishFlags flags)
{
//
// get the block locations
//
byte *colourBlock = block;
byte *alphaBlock = block;
if ((flags & (SquishFlags.Dxt3 | SquishFlags.Dxt5)) != 0)
{
colourBlock = block + 8;
}
//
// create the minimal point set
//
ColourSet colours = new ColourSet(rgba, mask, flags);
//
// check the compression type and compress colour
//
if (colours.Count == 1)
{
//
// always do a single colour fit
//
SingleColourFit fit = new SingleColourFit(colours, flags);
fit.Compress(colourBlock);
}
else if ((flags & SquishFlags.ColourRangeFit) != 0 || colours.Count == 0)
{
//
// do a range fit
//
RangeFit fit = new RangeFit(colours, flags);
fit.Compress(colourBlock);
}
else
{
//
// default to a cluster fit (could be iterative or not)
//
ClusterFit fit = new ClusterFit(colours, flags);
fit.Compress(colourBlock);
}
//
// compress alpha separately if necessary
//
if ((flags & SquishFlags.Dxt3) != 0)
{
compressAlphaDxt3(rgba, mask, alphaBlock);
}
else if ((flags & SquishFlags.Dxt5) != 0)
{
compressAlphaDxt5(rgba, mask, alphaBlock);
}
}
private static unsafe void compressMasked(byte *rgba, int mask, byte *block, SquishFlags flags) {
//
// get the block locations
//
byte *colourBlock = block;
byte *alphaBlock = block;
if ((flags & (SquishFlags.Dxt3 | SquishFlags.Dxt5)) != 0) colourBlock = block + 8;
//
// create the minimal point set
//
ColourSet colours = new ColourSet(rgba, mask, flags);
//
// check the compression type and compress colour
//
if (colours.Count == 1) {
//
// always do a single colour fit
//
SingleColourFit fit = new SingleColourFit(colours, flags);
fit.Compress(colourBlock);
}
else if ((flags & SquishFlags.ColourRangeFit) != 0 || colours.Count == 0) {
//
// do a range fit
//
RangeFit fit = new RangeFit(colours, flags);
fit.Compress(colourBlock);
}
else {
//
// default to a cluster fit (could be iterative or not)
//
ClusterFit fit = new ClusterFit(colours, flags);
fit.Compress(colourBlock);
}
//
// compress alpha separately if necessary
//
if ((flags & SquishFlags.Dxt3) != 0) compressAlphaDxt3(rgba, mask, alphaBlock);
else if ((flags & SquishFlags.Dxt5) != 0) compressAlphaDxt5(rgba, mask, alphaBlock);
}