public static byte[] GetBytePattern(MyChannel channel, Format format)
{
if (format == Format.Unknown)
{
return(null);
}
switch (channel)
{
case MyChannel.ColorMetal:
if (format == Format.BC7_UNorm_SRgb ||
format == Format.BC7_UNorm)
{
return(MyGeneratedTexturePatterns.ColorMetal_BC7_SRgb);
}
else
{
break;
}
case MyChannel.NormalGloss:
if (format == Format.BC7_UNorm)
{
return(MyGeneratedTexturePatterns.NormalGloss_BC7);
}
else
{
break;
}
case MyChannel.Extension:
if (format == Format.BC7_UNorm_SRgb ||
format == Format.BC7_UNorm)
{
return(MyGeneratedTexturePatterns.Extension_BC7_SRgb);
}
else
{
break;
}
case MyChannel.Alphamask:
if (format == Format.BC4_UNorm)
{
return(MyGeneratedTexturePatterns.Alphamask_BC4);
}
else
{
break;
}
default:
break;
}
// No correct pattern is found, therefore we will use generated:
int texelBitSize = MyResourceUtils.GetTexelBitSize(format);
const int bitsInByte = 8;
// Blocks are 4x4 texels in memory
const int blockTexelCount = 16;
int blockBitCount = texelBitSize * blockTexelCount;
return(new byte[blockBitCount / bitsInByte]);
}
