private static void SetPixelmask(Func <uint[]> pfmtfactory, ref DDS_PIXELFORMAT pfmt)
{
uint[] masks = pfmtfactory.Invoke();
pfmt.dwRGBBitCount = masks[0];
pfmt.dwRBitMask = masks[1];
pfmt.dwGBitMask = masks[2];
pfmt.dwBBitMask = masks[3];
pfmt.dwABitMask = masks[4];
}
public static (DDS_HEADER, DDS_HEADER_DXT10) GenerateHeader(DDSMetadata metadata)
{
var height = metadata.Height;
var width = metadata.Width;
var mipscount = metadata.Mipscount;
var iscubemap = metadata.Iscubemap;
var format = metadata.Format;
var ddspf = new DDS_PIXELFORMAT()
{
dwSize = PIXELFORMAT_SIZE,
dwFlags = 0,
dwFourCC = 0,
dwRGBBitCount = 0,
dwRBitMask = 0,
dwGBitMask = 0,
dwBBitMask = 0,
dwABitMask = 0
};
var header = new DDS_HEADER()
{
dwSize = HEADER_SIZE,
dwFlags = DDS_HEADER_FLAGS_TEXTURE,
dwHeight = height,
dwWidth = width,
dwPitchOrLinearSize = 0,
dwDepth = 0,
dwMipMapCount = 0,
dwReserved1 = 0,
dwReserved2 = 0,
dwReserved3 = 0,
dwReserved4 = 0,
dwReserved5 = 0,
dwReserved6 = 0,
dwReserved7 = 0,
dwReserved8 = 0,
dwReserved9 = 0,
dwReserved10 = 0,
dwReserved11 = 0,
ddspf = ddspf,
dwCaps = DDSCAPS_TEXTURE,
dwCaps2 = 0,
dwCaps3 = 0,
dwCaps4 = 0,
dwReserved12 = 0,
};
var dxt10header = new DDS_HEADER_DXT10()
{
dxgiFormat = 0,
resourceDimension = D3D10_RESOURCE_DIMENSION.D3D10_RESOURCE_DIMENSION_TEXTURE2D,
miscFlag = 0,
arraySize = metadata.Slicecount,
miscFlags2 = 0
};
if (mipscount > 0)
{
header.dwMipMapCount = mipscount;
}
// dwPitchOrLinearSize
switch (format)
{
case ETextureFormat.TEXFMT_BC1:
case ETextureFormat.TEXFMT_BC2:
case ETextureFormat.TEXFMT_BC3:
case ETextureFormat.TEXFMT_BC4:
case ETextureFormat.TEXFMT_BC5:
case ETextureFormat.TEXFMT_BC6H:
case ETextureFormat.TEXFMT_BC7:
{
/*var blocksize = 16;
* if (format == ETextureFormat.TEXFMT_BC1 || format == ETextureFormat.TEXFMT_BC4)
* blocksize = 8;
*
* var f = ((float)width + 3) / 4;
* var p =(Math.Max(1, f) * blocksize);
* //var p = (uint)(Math.Max(1, ((width + 3) / 4)) * blocksize);*/
uint p = 0;
if (format == ETextureFormat.TEXFMT_BC1 || format == ETextureFormat.TEXFMT_BC4)
{
p = width * height / 2;
}
else
{
p = width * height;
}
header.dwPitchOrLinearSize = (uint)(p);
header.dwFlags |= DDSD_LINEARSIZE;
break;
}
case ETextureFormat.TEXFMT_R8G8B8A8:
default:
{
header.dwPitchOrLinearSize = (width * metadata.Bpp + 7) / 8;
header.dwFlags |= DDSD_PITCH;
break;
}
}
// unused R8G8_B8G8, G8R8_G8B8, legacy UYVY-packed, and legacy YUY2-packed formats,
// header.dwPitchOrLinearSize = ((width + 1) >> 1) * 4;
// depth
//if (slicecount > 0 && !iscubemap)
// header.dwDepth = slicecount;
// pixelformat
{
// dwFourCC
switch (format)
{
case ETextureFormat.TEXFMT_R8G8B8A8:
{
ddspf.dwRGBBitCount = 32;
ddspf.dwRBitMask = 0xff;
ddspf.dwGBitMask = 0xff00;
ddspf.dwBBitMask = 0xff0000;
ddspf.dwABitMask = 0xff000000;
/*ddspf.dwRBitMask = 0x0f00;
* ddspf.dwGBitMask = 0x00f0;
* ddspf.dwBBitMask = 0x000f;
* ddspf.dwABitMask = 0xf000;*/
break;
}
case ETextureFormat.TEXFMT_BC1:
{
ddspf.dwFourCC = MAKEFOURCC('D', 'X', 'T', '1');
break;
}
case ETextureFormat.TEXFMT_BC2:
{
ddspf.dwFourCC = MAKEFOURCC('D', 'X', 'T', '3'); break;
}
case ETextureFormat.TEXFMT_BC3:
{
ddspf.dwFourCC = MAKEFOURCC('D', 'X', 'T', '5'); break;
}
case ETextureFormat.TEXFMT_BC4:
{
ddspf.dwFourCC = MAKEFOURCC('A', 'T', 'I', '1'); break;
}
case ETextureFormat.TEXFMT_BC5:
{
ddspf.dwFourCC = MAKEFOURCC('A', 'T', 'I', '2'); break;
}
case ETextureFormat.TEXFMT_Float_R16G16B16A16:
{
ddspf.dwFourCC = 113; break;
}
case ETextureFormat.TEXFMT_Float_R32G32B32A32:
{
ddspf.dwFourCC = 116; break;
}
case ETextureFormat.TEXFMT_BC6H:
case ETextureFormat.TEXFMT_BC7:
default:
{
break;
}
}
if (metadata.DXT10)
{
ddspf.dwFourCC = MAKEFOURCC('D', 'X', '1', '0');
}
// dwflags
if (ddspf.dwABitMask != 0) // check this
{
ddspf.dwFlags |= DDPF_ALPHAPIXELS;
}
/*if (ddspf.dwABitMask != 0)
* ddspf.dwFlags |= DDPF_ALPHA;*///old
if (ddspf.dwFourCC != 0)
{
ddspf.dwFlags |= DDPF_FOURCC;
}
if (ddspf.dwRGBBitCount != 0 && ddspf.dwRBitMask != 0 && ddspf.dwGBitMask != 0 && ddspf.dwBBitMask != 0)
{
ddspf.dwFlags |= DDPF_RGB;
}
if (metadata.Normal)
{
ddspf.dwFlags |= DDPF_NORMAL; //custom nv flag
}
header.ddspf = ddspf;
}
// caps
if (iscubemap || mipscount > 0)
{
header.dwCaps |= DDSCAPS_COMPLEX;
}
if (mipscount > 0)
{
header.dwCaps |= DDSCAPS_MIPMAP;
}
// caps2
if (iscubemap)
{
header.dwCaps2 |= DDSCAPS2_CUBEMAP_ALL_FACES | DDSCAPS2_CUBEMAP;
}
//if (slicecount > 0)
// header.dwCaps2 |= DDSCAPS2_VOLUME;
// flags
//if (slicecount > 0)
// header.dwFlags |= DDSD_DEPTH;
if (mipscount > 0)
{
header.dwFlags |= DDSD_MIPMAPCOUNT;
}
// DXT10
if (metadata.DXT10)
{
// dxgiFormat
switch (format)
{
case ETextureFormat.TEXFMT_R8G8B8A8: dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM;
break;
case ETextureFormat.TEXFMT_Float_R16G16B16A16: dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_R16G16B16A16_FLOAT;
break;
case ETextureFormat.TEXFMT_Float_R32G32B32A32:
dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_R32G32B32A32_FLOAT;
break;
case ETextureFormat.TEXFMT_BC1:
dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM;
break;
case ETextureFormat.TEXFMT_BC2:
dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_BC2_UNORM;
break;
case ETextureFormat.TEXFMT_BC3:
dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM;
break;
case ETextureFormat.TEXFMT_BC4:
dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_BC4_UNORM;
break;
case ETextureFormat.TEXFMT_BC5:
dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_BC5_UNORM;
break;
case ETextureFormat.TEXFMT_BC6H:
case ETextureFormat.TEXFMT_BC7:
default:
break;
}
// resourceDimension
//if (slicecount > 0)
// dxt10header.resourceDimension = D3D10_RESOURCE_DIMENSION.D3D10_RESOURCE_DIMENSION_TEXTURE3D;
//misc flag
if (iscubemap)
{
dxt10header.miscFlag |= DDS_RESOURCE_MISC_TEXTURECUBE;
}
if (mipscount > 0)
{
dxt10header.miscFlag |= D3D10_RESOURCE_MISC_GENERATE_MIPS;
}
// array size
if (iscubemap)
{
dxt10header.arraySize = metadata.Slicecount;
}
// miscFlags2
}
return(header, dxt10header);
}
public static (DDS_HEADER, DDS_HEADER_DXT10) GenerateHeader(DDSMetadata metadata)
{
var height = metadata.Height;
var width = metadata.Width;
var mipscount = metadata.Mipscount;
var iscubemap = metadata.Iscubemap;
var format = metadata.Format;
bool dxt10 = false;
var ddspf = new DDS_PIXELFORMAT()
{
dwSize = PIXELFORMAT_SIZE,
dwFlags = 0,
dwFourCC = 0,
dwRGBBitCount = 0,
dwRBitMask = 0,
dwGBitMask = 0,
dwBBitMask = 0,
dwABitMask = 0
};
var header = new DDS_HEADER()
{
dwSize = HEADER_SIZE,
dwFlags = DDS_HEADER_FLAGS_TEXTURE,
dwHeight = height,
dwWidth = width,
dwPitchOrLinearSize = 0,
dwDepth = 0,
dwMipMapCount = 0,
dwReserved1 = 0,
dwReserved2 = 0,
dwReserved3 = 0,
dwReserved4 = 0,
dwReserved5 = 0,
dwReserved6 = 0,
dwReserved7 = 0,
dwReserved8 = 0,
dwReserved9 = 0,
dwReserved10 = 0,
dwReserved11 = 0,
ddspf = ddspf,
dwCaps = DDSCAPS_TEXTURE,
dwCaps2 = 0,
dwCaps3 = 0,
dwCaps4 = 0,
dwReserved12 = 0,
};
var dxt10header = new DDS_HEADER_DXT10()
{
dxgiFormat = 0,
resourceDimension = D3D10_RESOURCE_DIMENSION.D3D10_RESOURCE_DIMENSION_TEXTURE2D,
miscFlag = 0,
arraySize = metadata.Slicecount,
miscFlags2 = 0
};
if (mipscount > 0)
{
header.dwMipMapCount = mipscount;
}
// pixelformat
{
// dwFourCC
switch (format)
{
//case ETextureFormat.TEXFMT_R8G8B8X8: SetPixelmask(DDSPF_X8R8G8B8, ref ddspf); break;
case ETextureFormat.TEXFMT_R8G8B8A8: SetPixelmask(DDSPF_A8R8G8B8, ref ddspf); break;
//case ETextureFormat.TEXFMT_R16G16_Uint: SetPixelmask(DDSPF_G16R16, ref ddspf); break;
case ETextureFormat.TEXFMT_BC1: ddspf.dwFourCC = MAKEFOURCC('D', 'X', 'T', '1'); break;
case ETextureFormat.TEXFMT_BC2: ddspf.dwFourCC = MAKEFOURCC('D', 'X', 'T', '3'); break;
case ETextureFormat.TEXFMT_BC3: ddspf.dwFourCC = MAKEFOURCC('D', 'X', 'T', '5'); break;
case ETextureFormat.TEXFMT_BC4: ddspf.dwFourCC = MAKEFOURCC('B', 'C', '4', 'U'); break;
case ETextureFormat.TEXFMT_BC5: ddspf.dwFourCC = MAKEFOURCC('B', 'C', '5', 'U'); break;
//case ETextureFormat.TEXFMT_Float_R16G16B16A16: ddspf.dwFourCC = 113; break;
//case ETextureFormat.TEXFMT_Float_R32G32B32A32: ddspf.dwFourCC = 116; break;
//case ETextureFormat.TEXFMT_BC6H:
case ETextureFormat.TEXFMT_BC7: dxt10 = true; break;
default:
{
throw new MissingFormatException($"Missing Format: {format}");
}
}
if (dxt10)
{
ddspf.dwFourCC = MAKEFOURCC('D', 'X', '1', '0');
}
// dwflags
if (ddspf.dwABitMask != 0) // check this
{
ddspf.dwFlags |= DDPF_ALPHAPIXELS;
}
/*if (ddspf.dwABitMask != 0)
* ddspf.dwFlags |= DDPF_ALPHA;*///old
if (ddspf.dwFourCC != 0)
{
ddspf.dwFlags |= DDPF_FOURCC;
}
if (ddspf.dwRGBBitCount != 0 && (ddspf.dwRBitMask != 0 || ddspf.dwGBitMask != 0 || ddspf.dwBBitMask != 0))
{
ddspf.dwFlags |= DDPF_RGB;
}
if (metadata.Normal)
{
ddspf.dwFlags |= DDPF_NORMAL; //custom nv flag
}
header.ddspf = ddspf;
}
// dwPitchOrLinearSize
switch (format)
{
case ETextureFormat.TEXFMT_BC1:
case ETextureFormat.TEXFMT_BC2:
case ETextureFormat.TEXFMT_BC3:
case ETextureFormat.TEXFMT_BC4:
case ETextureFormat.TEXFMT_BC5:
//case ETextureFormat.TEXFMT_BC6H:
case ETextureFormat.TEXFMT_BC7:
{
uint p = 0;
if (format == ETextureFormat.TEXFMT_BC1 || format == ETextureFormat.TEXFMT_BC4)
{
p = width * height / 2;
}
else
{
p = width * height;
}
header.dwPitchOrLinearSize = (uint)(p);
header.dwFlags |= DDSD_LINEARSIZE;
break;
}
case ETextureFormat.TEXFMT_R8G8B8A8:
//case ETextureFormat.TEXFMT_R8G8B8X8:
//case ETextureFormat.TEXFMT_R16G16_Uint:
{
var bpp = ddspf.dwRGBBitCount;
header.dwPitchOrLinearSize = (width * bpp + 7) / 8;
header.dwFlags |= DDSD_PITCH;
break;
}
default:
{
throw new MissingFormatException($"Missing Format: {format}");
}
}
// unused R8G8_B8G8, G8R8_G8B8, legacy UYVY-packed, and legacy YUY2-packed formats,
// header.dwPitchOrLinearSize = ((width + 1) >> 1) * 4;
// depth
//if (slicecount > 0 && !iscubemap)
// header.dwDepth = slicecount;
// caps
if (iscubemap || mipscount > 0)
{
header.dwCaps |= DDSCAPS_COMPLEX;
}
if (mipscount > 0)
{
header.dwCaps |= DDSCAPS_MIPMAP;
}
// caps2
if (iscubemap)
{
header.dwCaps2 |= DDSCAPS2_CUBEMAP_ALL_FACES | DDSCAPS2_CUBEMAP;
}
//if (slicecount > 0)
// header.dwCaps2 |= DDSCAPS2_VOLUME;
// flags
//if (slicecount > 0)
// header.dwFlags |= DDSD_DEPTH;
if (mipscount > 0)
{
header.dwFlags |= DDSD_MIPMAPCOUNT;
}
// DXT10
if (dxt10)
{
// dxgiFormat
switch (format)
{
case ETextureFormat.TEXFMT_BC7:
{
dxt10header.dxgiFormat = DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM;
break;
}
default:
{
throw new MissingFormatException($"Missing Format: {format}");
}
}
// resourceDimension
//if (slicecount > 0)
// dxt10header.resourceDimension = D3D10_RESOURCE_DIMENSION.D3D10_RESOURCE_DIMENSION_TEXTURE3D;
//misc flag
if (iscubemap)
{
dxt10header.miscFlag |= DDS_RESOURCE_MISC_TEXTURECUBE;
}
if (mipscount > 0)
{
dxt10header.miscFlag |= D3D10_RESOURCE_MISC_GENERATE_MIPS;
}
// array size
if (iscubemap)
{
dxt10header.arraySize = metadata.Slicecount;
}
// miscFlags2
}
return(header, dxt10header);
}