public DXT5Block(EndianBinaryReader reader, DXTxBlockLayout blockLayout)
{
byte bits_5, bits_4, bits_3, bits_2, bits_1, bits_0;
switch (blockLayout)
{
case DXTxBlockLayout.Normal:
Alpha0 = reader.ReadByte();
Alpha1 = reader.ReadByte();
bits_5 = reader.ReadByte();
bits_4 = reader.ReadByte();
bits_3 = reader.ReadByte();
bits_2 = reader.ReadByte();
bits_1 = reader.ReadByte();
bits_0 = reader.ReadByte();
Bits = DXTx.ExtractBits((((ulong)bits_0 << 40) | ((ulong)bits_1 << 32) | ((ulong)bits_2 << 24) | ((ulong)bits_3 << 16) | ((ulong)bits_4 << 8) | (ulong)bits_5), 3);
Color = new DXT1Block(reader, blockLayout);
break;
case DXTxBlockLayout.PSP:
Color = new DXT1Block(reader, blockLayout);
Alpha0 = reader.ReadByte();
Alpha1 = reader.ReadByte();
bits_5 = reader.ReadByte();
bits_4 = reader.ReadByte();
bits_3 = reader.ReadByte();
bits_2 = reader.ReadByte();
bits_1 = reader.ReadByte();
bits_0 = reader.ReadByte();
Bits = DXTx.ExtractBits((((ulong)bits_0 << 40) | ((ulong)bits_1 << 32) | ((ulong)bits_2 << 24) | ((ulong)bits_3 << 16) | ((ulong)bits_4 << 8) | (ulong)bits_5), 3);
break;
default:
throw new Exception("Unknown block layout");
}
}
public DXT1Block(EndianBinaryReader reader, DXTxBlockLayout blockLayout)
{
byte color0_hi, color0_lo, color1_hi, color1_lo, bits_3, bits_2, bits_1, bits_0;
switch (blockLayout)
{
case DXTxBlockLayout.Normal:
color0_hi = reader.ReadByte();
color0_lo = reader.ReadByte();
color1_hi = reader.ReadByte();
color1_lo = reader.ReadByte();
bits_3 = reader.ReadByte();
bits_2 = reader.ReadByte();
bits_1 = reader.ReadByte();
bits_0 = reader.ReadByte();
break;
case DXTxBlockLayout.PSP:
bits_3 = reader.ReadByte();
bits_2 = reader.ReadByte();
bits_1 = reader.ReadByte();
bits_0 = reader.ReadByte();
color0_hi = reader.ReadByte();
color0_lo = reader.ReadByte();
color1_hi = reader.ReadByte();
color1_lo = reader.ReadByte();
break;
default:
throw new Exception("Unknown block layout");
}
Bits = DXTx.ExtractBits((((uint)bits_0 << 24) | ((uint)bits_1 << 16) | ((uint)bits_2 << 8) | (uint)bits_3), 2);
Color0 = (ushort)(((ushort)color0_lo << 8) | (ushort)color0_hi);
Color1 = (ushort)(((ushort)color1_lo << 8) | (ushort)color1_hi);
}
