public static unsafe byte[] DecompressBlock(Byte[] data, int width, int height, DDS.DXGI_FORMAT format)
{
Console.WriteLine(format);
Console.WriteLine(data.Length);
Console.WriteLine(width);
Console.WriteLine(height);
long inputRowPitch;
long inputSlicePitch;
TexHelper.Instance.ComputePitch((DXGI_FORMAT)format, width, height, out inputRowPitch, out inputSlicePitch, CP_FLAGS.NONE);
DXGI_FORMAT FormatDecompressed;
if (format.ToString().Contains("SRGB"))
{
FormatDecompressed = DXGI_FORMAT.R8G8B8A8_UNORM_SRGB;
}
else
{
FormatDecompressed = DXGI_FORMAT.R8G8B8A8_UNORM;
}
if (data.Length == inputSlicePitch)
{
byte *buf;
buf = (byte *)Marshal.AllocHGlobal((int)inputSlicePitch);
Marshal.Copy(data, 0, (IntPtr)buf, (int)inputSlicePitch);
DirectXTexNet.Image inputImage = new DirectXTexNet.Image(
width, height, (DXGI_FORMAT)format, inputRowPitch,
inputSlicePitch, (IntPtr)buf, null);
TexMetadata texMetadata = new TexMetadata(width, height, 1, 1, 1, 0, 0,
(DXGI_FORMAT)format, TEX_DIMENSION.TEXTURE2D);
ScratchImage scratchImage = TexHelper.Instance.InitializeTemporary(
new DirectXTexNet.Image[] { inputImage }, texMetadata, null);
using (var decomp = scratchImage.Decompress(0, FormatDecompressed))
{
byte[] result = new byte[4 * width * height];
Marshal.Copy(decomp.GetImage(0).Pixels, result, 0, result.Length);
inputImage = null;
scratchImage.Dispose();
return(result);
}
}
return(null);
}
private static PixelFormat GetPixelFormatFromDXGI(DDS.DXGI_FORMAT fmt)
{
switch (fmt)
{
case DDS.DXGI_FORMAT.B5G5R5A1_UNORM:
return(PixelFormat.B5_G5_R5_A1_UNorm);
case DDS.DXGI_FORMAT.B8G8R8A8_TYPELESS:
case DDS.DXGI_FORMAT.B8G8R8A8_UNORM:
case DDS.DXGI_FORMAT.B8G8R8X8_TYPELESS:
case DDS.DXGI_FORMAT.B8G8R8X8_UNORM:
return(PixelFormat.B8_G8_R8_A8_UNorm);
case DDS.DXGI_FORMAT.B8G8R8A8_UNORM_SRGB:
case DDS.DXGI_FORMAT.B8G8R8X8_UNORM_SRGB:
return(PixelFormat.B8_G8_R8_A8_UNorm_SRgb);
case DDS.DXGI_FORMAT.R8G8B8A8_UNORM_SRGB:
return(PixelFormat.R8_G8_B8_A8_UNorm_SRgb);
case DDS.DXGI_FORMAT.R8G8B8A8_UNORM:
case DDS.DXGI_FORMAT.R8G8B8A8_TYPELESS:
return(PixelFormat.R8_G8_B8_A8_UNorm);
case DDS.DXGI_FORMAT.BC1_TYPELESS:
case DDS.DXGI_FORMAT.BC1_UNORM:
return(PixelFormat.BC1_Rgba_UNorm);
case DDS.DXGI_FORMAT.BC1_UNORM_SRGB:
return(PixelFormat.BC1_Rgba_UNorm_SRgb);
case DDS.DXGI_FORMAT.BC2_TYPELESS:
case DDS.DXGI_FORMAT.BC2_UNORM:
return(PixelFormat.BC2_UNorm);
case DDS.DXGI_FORMAT.BC2_UNORM_SRGB:
return(PixelFormat.BC2_UNorm_SRgb);
case DDS.DXGI_FORMAT.BC3_TYPELESS:
case DDS.DXGI_FORMAT.BC3_UNORM:
return(PixelFormat.BC3_UNorm);
case DDS.DXGI_FORMAT.BC3_UNORM_SRGB:
return(PixelFormat.BC3_UNorm_SRgb);
case DDS.DXGI_FORMAT.BC4_TYPELESS:
case DDS.DXGI_FORMAT.BC4_UNORM:
return(PixelFormat.BC4_UNorm);
case DDS.DXGI_FORMAT.BC4_SNORM:
return(PixelFormat.BC4_SNorm);
case DDS.DXGI_FORMAT.BC5_TYPELESS:
case DDS.DXGI_FORMAT.BC5_UNORM:
return(PixelFormat.BC5_UNorm);
case DDS.DXGI_FORMAT.BC5_SNORM:
return(PixelFormat.BC5_SNorm);
case DDS.DXGI_FORMAT.BC6H_TYPELESS:
case DDS.DXGI_FORMAT.BC6H_UF16:
return(PixelFormat.BC6H_UFloat);
case DDS.DXGI_FORMAT.BC6H_SF16:
return(PixelFormat.BC6H_SFloat);
case DDS.DXGI_FORMAT.BC7_TYPELESS:
case DDS.DXGI_FORMAT.BC7_UNORM:
return(PixelFormat.BC7_UNorm);
case DDS.DXGI_FORMAT.BC7_UNORM_SRGB:
return(PixelFormat.BC7_UNorm_SRgb);
default:
throw new Exception($"Unimplemented DXGI Type: {fmt.ToString()}");
}
}
