public void SetFlags(DXGI_FORMAT Format)
{
header.flags = (uint)(DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT | DDSD.MIPMAPCOUNT | DDSD.LINEARSIZE);
header.caps = (uint)DDSCAPS.TEXTURE;
if (header.mipmapCount > 1)
{
header.caps |= (uint)(DDSCAPS.COMPLEX | DDSCAPS.MIPMAP);
}
switch (Format)
{
case DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
header.ddspf.flags = (uint)(DDPF.RGB | DDPF.ALPHAPIXELS);
header.ddspf.RGBBitCount = 0x8 * 4;
header.ddspf.RBitMask = 0x000000FF;
header.ddspf.GBitMask = 0x0000FF00;
header.ddspf.BBitMask = 0x00FF0000;
header.ddspf.ABitMask = 0xFF000000;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DXT1;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT.DXGI_FORMAT_BC2_UNORM:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DXT3;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DXT5;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC4_SNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC5_SNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT.DXGI_FORMAT_BC6H_SF16:
case DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM_SRGB:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DX10;
if (DX10header == null)
{
DX10header = new DX10Header();
}
IsDX10 = true;
DX10header.DXGI_Format = Format;
break;
}
}
private void ReadDX10Header(BinaryDataReader reader)
{
DX10header = new DX10Header();
DX10header.DXGI_Format = reader.ReadEnum <DXGI_FORMAT>(true);
DX10header.ResourceDim = reader.ReadUInt32();
DX10header.miscFlag = reader.ReadUInt32();
DX10header.arrayFlag = reader.ReadUInt32();
DX10header.miscFlags2 = reader.ReadUInt32();
}
public void Load(Stream stream)
{
Name = FileInfo.FileName;
using (var reader = new FileReader(stream))
{
MainHeader = reader.ReadStruct <Header>();
PfHeader = reader.ReadStruct <DDSPFHeader>();
if (IsDX10)
{
Dx10Header = reader.ReadStruct <DX10Header>();
}
byte[] Components = new byte[4] {
0, 1, 2, 3
};
bool Compressed = false;
bool HasLuminance = false;
bool HasAlpha = false;
bool IsRGB = false;
switch (PfHeader.Flags)
{
case 4:
Compressed = true;
break;
case 2:
case (uint)DDPF.LUMINANCE:
HasLuminance = true;
break;
case (uint)DDPF.RGB:
IsRGB = true;
break;
case 0x41:
IsRGB = true;
HasAlpha = true;
break;
}
ToGenericFormat();
if (!IsDX10 && !this.IsBCNCompressed())
{
Platform.OutputFormat = DDS_RGBA.GetUncompressedType(this, Components, IsRGB, HasAlpha, HasLuminance, PfHeader);
}
Depth = 1;
Width = MainHeader.Width;
Height = MainHeader.Height;
MipCount = MainHeader.MipCount == 0 ? 1 : MainHeader.MipCount;
ArrayCount = IsCubeMap ? (uint)6 : 1;
}
}
private void WriteDX10Header(BinaryDataWriter writer)
{
if (DX10header == null)
{
DX10header = new DX10Header();
}
writer.Write((uint)DX10header.DXGI_Format);
writer.Write(DX10header.ResourceDim);
writer.Write(DX10header.miscFlag);
writer.Write(DX10header.arrayFlag);
writer.Write(DX10header.miscFlags2);
}
public void Load(Stream stream)
{
using (var reader = new FileReader(stream))
{
MainHeader = reader.ReadStruct <Header>();
PfHeader = reader.ReadStruct <DDSPFHeader>();
if (IsDX10)
{
Dx10Header = reader.ReadStruct <DX10Header>();
}
int Dx10Size = Dx10Header != null ? 20 : 0;
reader.TemporarySeek((int)(4 + MainHeader.Size + Dx10Size), SeekOrigin.Begin);
ImageData = reader.ReadBytes((int)(reader.BaseStream.Length - reader.BaseStream.Position));
}
}
/// <summary>
/// Encodes the DDS Header and if DX10, the DX10 Header
/// </summary>
/// <param name="header">DDS Header</param>
/// <param name="dx10Header">DX10 Header</param>
/// <returns>Resulting DDS File Header in bytes</returns>
public static byte[] EncodeDDSHeader(DDSHeader header, DX10Header dx10Header)
{
// Create stream
using (var output = new BinaryWriter(new MemoryStream()))
{
// Write DDS Magic
output.Write(DDSHeader.DDSMagic);
// Write Header
output.Write(StructToBytes(header));
// Check for DX10 Header
if (header.PixelFormat.FourCC == PixelFormats.DX10.FourCC)
{
// Write Header
output.Write(StructToBytes(dx10Header));
}
// Done
return(((MemoryStream)(output.BaseStream)).ToArray());
}
}
public void SetFlags(DXGI_FORMAT Format)
{
header.flags = (uint)(DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT | DDSD.MIPMAPCOUNT | DDSD.LINEARSIZE);
header.caps = (uint)DDSCAPS.TEXTURE;
if (header.mipmapCount > 1)
{
header.caps |= (uint)(DDSCAPS.COMPLEX | DDSCAPS.MIPMAP);
}
switch (Format)
{
case DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
header.ddspf.flags = (uint)(DDPF.RGB | DDPF.ALPHAPIXELS);
header.ddspf.RGBBitCount = 0x8 * 4;
header.ddspf.RBitMask = 0x000000FF;
header.ddspf.GBitMask = 0x0000FF00;
header.ddspf.BBitMask = 0x00FF0000;
header.ddspf.ABitMask = 0xFF000000;
pixelInternalFormat = PixelInternalFormat.SrgbAlpha;
pixelFormat = OpenTK.Graphics.OpenGL.PixelFormat.Rgba;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM_SRGB:
case DXGI_FORMAT.DXGI_FORMAT_BC1_UNORM:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DXT1;
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt1Ext;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC2_UNORM_SRGB:
case DXGI_FORMAT.DXGI_FORMAT_BC2_UNORM:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DXT3;
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt3Ext;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM_SRGB:
case DXGI_FORMAT.DXGI_FORMAT_BC3_UNORM:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DXT5;
pixelInternalFormat = PixelInternalFormat.CompressedRgbaS3tcDxt5Ext;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC4_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC4_SNORM:
pixelInternalFormat = PixelInternalFormat.CompressedRedRgtc1;
break;
case DXGI_FORMAT.DXGI_FORMAT_BC5_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC5_SNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC6H_UF16:
case DXGI_FORMAT.DXGI_FORMAT_BC6H_SF16:
case DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM:
case DXGI_FORMAT.DXGI_FORMAT_BC7_UNORM_SRGB:
header.ddspf.flags = (uint)DDPF.FOURCC;
header.ddspf.fourCC = FOURCC_DX10;
if (DX10header == null)
{
DX10header = new DX10Header();
}
IsDX10 = true;
DX10header.DXGI_Format = Format;
break;
}
}
/// <summary>
/// Generates a DDS Header, and if requires, a DX10 Header
/// </summary>
/// <param name="metaData">Meta Data</param>
/// <param name="flags">Flags</param>
/// <param name="header">DDS Header Output</param>
/// <param name="dx10Header">DX10 Header Output</param>
public static void GenerateDDSHeader(TexMetadata metaData, DDSFlags flags, out DDSHeader header, out DX10Header dx10Header)
{
// Check array size
if (metaData.ArraySize > 1)
{
// Check if we have an array and whether we're cube maps/non-2D
if (metaData.ArraySize != 6 || metaData.Dimension != TexDimension.TEXTURE2D || !metaData.IsCubeMap())
{
// Texture1D arrays, Texture2D arrays, and Cubemap arrays must be stored using 'DX10' extended header
flags |= DDSFlags.FORCEDX10EXT;
}
}
// Check for DX10 Ext
if (flags.HasFlag(DDSFlags.FORCEDX10EXTMISC2))
{
flags |= DDSFlags.FORCEDX10EXT;
}
// Create DDS Header
header = new DDSHeader
{
// Set Data
Size = (uint)Marshal.SizeOf <DDSHeader>(),
Flags = DDSHeader.HeaderFlags.TEXTURE,
Caps = (uint)DDSHeader.SurfaceFlags.TEXTURE,
PixelFormat = new DDSHeader.DDSPixelFormat(0, 0, 0, 0, 0, 0, 0, 0)
};
// Create DX10 Header
dx10Header = new DX10Header();
// Switch format
switch (metaData.Format)
{
case DXGIFormat.R8G8B8A8UNORM:
header.PixelFormat = PixelFormats.A8B8G8R8;
break;
case DXGIFormat.R16G16UNORM:
header.PixelFormat = PixelFormats.G16R16;
break;
case DXGIFormat.R8G8UNORM:
header.PixelFormat = PixelFormats.A8L8;
break;
case DXGIFormat.R16UNORM:
header.PixelFormat = PixelFormats.L16;
break;
case DXGIFormat.R8UNORM:
header.PixelFormat = PixelFormats.L8;
break;
case DXGIFormat.A8UNORM:
header.PixelFormat = PixelFormats.A8;
break;
case DXGIFormat.R8G8B8G8UNORM:
header.PixelFormat = PixelFormats.R8G8B8G8;
break;
case DXGIFormat.G8R8G8B8UNORM:
header.PixelFormat = PixelFormats.G8R8G8B8;
break;
case DXGIFormat.BC1UNORM:
header.PixelFormat = PixelFormats.DXT1;
break;
case DXGIFormat.BC2UNORM:
header.PixelFormat = metaData.IsPMAlpha() ? (PixelFormats.DXT2) : (PixelFormats.DXT3);
break;
case DXGIFormat.BC3UNORM:
header.PixelFormat = metaData.IsPMAlpha() ? (PixelFormats.DXT4) : (PixelFormats.DXT5);
break;
case DXGIFormat.BC4UNORM:
header.PixelFormat = PixelFormats.BC4UNORM;
break;
case DXGIFormat.BC4SNORM:
header.PixelFormat = PixelFormats.BC4SNORM;
break;
case DXGIFormat.BC5UNORM:
header.PixelFormat = PixelFormats.BC5UNORM;
break;
case DXGIFormat.BC5SNORM:
header.PixelFormat = PixelFormats.BC5SNORM;
break;
case DXGIFormat.B5G6R5UNORM:
header.PixelFormat = PixelFormats.R5G6B5;
break;
case DXGIFormat.B5G5R5A1UNORM:
header.PixelFormat = PixelFormats.A1R5G5B5;
break;
case DXGIFormat.R8G8SNORM:
header.PixelFormat = PixelFormats.V8U8;
break;
case DXGIFormat.R8G8B8A8SNORM:
header.PixelFormat = PixelFormats.Q8W8V8U8;
break;
case DXGIFormat.R16G16SNORM:
header.PixelFormat = PixelFormats.V16U16;
break;
case DXGIFormat.B8G8R8A8UNORM:
header.PixelFormat = PixelFormats.A8R8G8B8;
break;
case DXGIFormat.B8G8R8X8UNORM:
header.PixelFormat = PixelFormats.X8R8G8B8;
break;
case DXGIFormat.B4G4R4A4UNORM:
header.PixelFormat = PixelFormats.A4R4G4B4;
break;
case DXGIFormat.YUY2:
header.PixelFormat = PixelFormats.YUY2;
break;
// Legacy D3DX formats using D3DFMT enum value as FourCC
case DXGIFormat.R32G32B32A32FLOAT:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 116; // D3DFMTA32B32G32R32F
break;
case DXGIFormat.R16G16B16A16FLOAT:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 113; // D3DFMTA16B16G16R16F
break;
case DXGIFormat.R16G16B16A16UNORM:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 36; // D3DFMTA16B16G16R16
break;
case DXGIFormat.R16G16B16A16SNORM:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 110; // D3DFMTQ16W16V16U16
break;
case DXGIFormat.R32G32FLOAT:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 115; // D3DFMTG32R32F
break;
case DXGIFormat.R16G16FLOAT:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 112; // D3DFMTG16R16F
break;
case DXGIFormat.R32FLOAT:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 114; // D3DFMTR32F
break;
case DXGIFormat.R16FLOAT:
header.PixelFormat.Flags = PixelFormats.DDSFOURCC; header.PixelFormat.FourCC = 111; // D3DFMTR16F
break;
default:
break;
}
// Check for mips
if (metaData.MipLevels > 0)
{
// Set flag
header.Flags |= DDSHeader.HeaderFlags.MIPMAP;
// Check size
if (metaData.MipLevels > UInt16.MaxValue)
{
throw new ArgumentException(String.Format("Too many mipmaps: {0}. Max: {1}", metaData.MipLevels, UInt16.MaxValue));
}
// Set
header.MipMapCount = (uint)metaData.MipLevels;
// Check count
if (header.MipMapCount > 1)
{
header.Caps |= (uint)DDSHeader.SurfaceFlags.MIPMAP;
}
}
// Switch Dimension
switch (metaData.Dimension)
{
case TexDimension.TEXTURE1D:
{
// Check size
if (metaData.Width > Int32.MaxValue)
{
throw new ArgumentException(String.Format("Image Width too large: {0}. Max: {1}", metaData.Width, Int32.MaxValue));
}
// Set
header.Width = (uint)metaData.Width;
header.Height = header.Depth = 1;
// Check size
break;
}
case TexDimension.TEXTURE2D:
{
// Check size
if (metaData.Width > Int32.MaxValue || metaData.Height > Int32.MaxValue)
{
throw new ArgumentException(String.Format("Image Width and/or Height too large: {0}x{1}. Max: {2}",
metaData.Width,
metaData.Height,
Int32.MaxValue));
}
// Set
header.Width = (uint)metaData.Width;
header.Height = (uint)metaData.Height;
header.Depth = 1;
// Check size
break;
}
case TexDimension.TEXTURE3D:
{
// Check size
if (metaData.Width > Int32.MaxValue || metaData.Height > Int32.MaxValue)
{
throw new ArgumentException(String.Format("Image Width and/or Height too large: {0}x{1}. Max: {2}",
metaData.Width,
metaData.Height,
Int32.MaxValue));
}
// Check size
if (metaData.Depth > UInt16.MaxValue)
{
throw new ArgumentException(String.Format("Image Depth too large: {0}. Max: {1}", metaData.Depth, UInt16.MaxValue));
}
// Set
header.Flags |= DDSHeader.HeaderFlags.VOLUME;
header.Caps2 |= 0x00200000;
header.Width = (uint)metaData.Width;
header.Height = (uint)metaData.Height;
header.Depth = (uint)metaData.Depth;
// Check size
break;
}
default:
throw new ArgumentException("Invalid Texture Dimension.");
}
// Calculate the Pitch
ComputePitch(metaData.Format, metaData.Width, metaData.Height, out long rowPitch, out long slicePitch, CPFLAGS.NONE);
// Validate results
if (slicePitch > UInt32.MaxValue || rowPitch > UInt32.MaxValue)
{
throw new ArgumentException("Failed to calculate row and/or slice pitch, values returned were too large");
}
// Check is it compressed
if (IsCompressed(metaData.Format))
{
header.Flags |= DDSHeader.HeaderFlags.LINEARSIZE;
header.PitchOrLinearSize = (uint)slicePitch;
}
else
{
header.Flags |= DDSHeader.HeaderFlags.PITCH;
header.PitchOrLinearSize = (uint)rowPitch;
}
// Check for do we need to create the DX10 Header
if (header.PixelFormat.Size == 0)
{
// Check size
if (metaData.ArraySize > UInt16.MaxValue)
{
throw new ArgumentException(String.Format("Array Size too large: {0}. Max: {1}", metaData.ArraySize, UInt16.MaxValue));
}
// Set Pixel format
header.PixelFormat = PixelFormats.DX10;
// Set Data
dx10Header.Format = metaData.Format;
dx10Header.ResourceDimension = metaData.Dimension;
dx10Header.MiscFlag = metaData.MiscFlags & ~TexMiscFlags.TEXTURECUBE;
dx10Header.ArraySize = (uint)metaData.ArraySize;
// Check for Cube Maps
if (metaData.MiscFlags.HasFlag(TexMiscFlags.TEXTURECUBE))
{
// Check array size, must be a multiple of 6 for cube maps
if ((metaData.ArraySize % 6) != 0)
{
throw new ArgumentException("Array size must be a multiple of 6");
}
// Set Flag
dx10Header.MiscFlag |= TexMiscFlags.TEXTURECUBE;
dx10Header.ArraySize /= 6;
}
// Check for mist flags
if (flags.HasFlag(DDSFlags.FORCEDX10EXTMISC2))
{
// This was formerly 'reserved'. D3DX10 and D3DX11 will fail if this value is anything other than 0
dx10Header.MiscFlags2 = (uint)metaData.MiscFlags2;
}
}
}
public DDS()
{
MainHeader = new Header();
PfHeader = new DDSPFHeader();
Dx10Header = new DX10Header();
}
// Methods
public override void Load(Stream fileStream)
{
// Signature
var reader = new ExtendedBinaryReader(
fileStream, Encoding.ASCII, false);
string sig = reader.ReadSignature(4);
if (sig != Signature)
{
throw new InvalidSignatureException(Signature, sig);
}
// Header
Header = new DDSHeader()
{
Size = reader.ReadUInt32(),
Flags = reader.ReadUInt32()
};
if (!Header.HasFlag(DDSHeader.FLAGS.CAPS) ||
!Header.HasFlag(DDSHeader.FLAGS.WIDTH) ||
!Header.HasFlag(DDSHeader.FLAGS.HEIGHT) ||
!Header.HasFlag(DDSHeader.FLAGS.PIXEL_FORMAT))
{
throw new Exception(
"Could not load DDS file. Required header flags are missing!");
}
Height = reader.ReadUInt32();
Width = reader.ReadUInt32();
Header.PitchOrLinearSize = reader.ReadUInt32();
Header.Depth = reader.ReadUInt32();
Header.MipmapCount = reader.ReadUInt32();
reader.JumpAhead(44); // Skip past padding
Header.PixelFormat = new DDSPixelFormat(reader);
Header.Caps = reader.ReadUInt32();
Header.Caps2 = reader.ReadUInt32();
Header.Caps3 = reader.ReadUInt32();
Header.Caps4 = reader.ReadUInt32();
reader.JumpTo(Header.Size + 4, true);
// Depth
uint depth = 1;
if (Header.HasFlag(DDSHeader.FLAGS.DEPTH) &&
Header.HasFlag(DDSHeader.CAPS2.VOLUME))
{
depth = Header.Depth;
// TODO
throw new NotImplementedException(
"Reading 3D textures from DDS files is not yet supported.");
}
else if (Header.HasFlag(DDSHeader.CAPS2.CUBEMAP))
{
depth = 6;
// TODO
throw new NotImplementedException(
"Reading DDS cubemaps is not yet supported.");
}
// MipMaps
uint mipmapCount = 1;
if (Header.HasFlag(DDSHeader.FLAGS.MIPMAP_COUNT) &&
Header.HasFlag(DDSHeader.CAPS.MIPMAP))
{
mipmapCount = Header.MipmapCount;
}
MipmapCount = mipmapCount;
// Caps
if (!Header.HasFlag(DDSHeader.CAPS.TEXTURE))
{
throw new Exception(
"Could not load DDS file. Required CAPS flag is missing!");
}
// TODO
// Caps2
// TODO
// DX10 Header/Pixel Format
uint pixelsPerBlock = 16;
byte blockSize;
if (Header.PixelFormat.HasFlag(DDSPixelFormat.FLAGS.FOURCC))
{
switch ((DDSPixelFormat.FOURCCS)Header.PixelFormat.FourCC)
{
// DX10 Header
case DDSPixelFormat.FOURCCS.DX10:
{
var dx10Header = new DX10Header(reader);
depth = dx10Header.ArraySize;
switch ((DX10Header.DXGI_FORMATS)dx10Header.DXGIFormat)
{
// BC1
case DX10Header.DXGI_FORMATS.BC1_TYPELESS:
case DX10Header.DXGI_FORMATS.BC1_UNORM:
CompressionFormat = CompressionFormats.RGB_S3TC_DXT1_EXT;
blockSize = 8;
break;
// BC3
case DX10Header.DXGI_FORMATS.BC3_TYPELESS:
case DX10Header.DXGI_FORMATS.BC3_UNORM:
CompressionFormat = CompressionFormats.RGBA_S3TC_DXT3_EXT;
blockSize = 16;
break;
// BC5
case DX10Header.DXGI_FORMATS.BC5_TYPELESS:
case DX10Header.DXGI_FORMATS.BC5_SNORM:
case DX10Header.DXGI_FORMATS.BC5_UNORM:
CompressionFormat = CompressionFormats.RGBA_S3TC_DXT5_EXT;
blockSize = 16;
break;
// BC7
case DX10Header.DXGI_FORMATS.BC7_TYPELESS:
case DX10Header.DXGI_FORMATS.BC7_UNORM:
CompressionFormat = CompressionFormats.RGBA_BPTC_UNORM_EXT;
blockSize = 16;
break;
case DX10Header.DXGI_FORMATS.BC7_UNORM_SRGB:
CompressionFormat = CompressionFormats.SRGB_ALPHA_BPTC_UNORM_EXT;
blockSize = 16;
break;
// TODO: Add support for BC1 SRGB, BC2, BC3 SRGB, BC4, and BC6
default:
throw new NotImplementedException(string.Format(
"Reading DX10 DXGI type \"{0}\" is not yet supported.",
dx10Header.DXGIFormat));
}
break;
}
// DXT1
case DDSPixelFormat.FOURCCS.DXT1:
CompressionFormat = CompressionFormats.RGB_S3TC_DXT1_EXT;
blockSize = 8;
break;
// DXT3
case DDSPixelFormat.FOURCCS.DXT3:
CompressionFormat = CompressionFormats.RGBA_S3TC_DXT3_EXT;
blockSize = 16;
break;
// DXT5
case DDSPixelFormat.FOURCCS.DXT5:
case DDSPixelFormat.FOURCCS.ATI2:
case DDSPixelFormat.FOURCCS.BC5S:
CompressionFormat = CompressionFormats.RGBA_S3TC_DXT5_EXT;
blockSize = 16;
break;
// TODO: Add support for DXT2 and DXT4
default:
throw new NotImplementedException(string.Format("{0} \"{1}\" {2}",
"Reading DDS files with FOURCC",
Header.PixelFormat.FourCC,
"is not yet supported."));
}
}
else
{
if (!Header.PixelFormat.HasFlag(DDSPixelFormat.FLAGS.RGB))
{
throw new NotImplementedException(
"Reading DDS files without RGB data is not yet supported.");
}
if (Header.PixelFormat.RGBBitCount % 8 != 0)
{
throw new InvalidDataException(
"RGBBitCount must be divisible by 8.");
}
if (Header.PixelFormat.RGBBitCount > 32)
{
throw new InvalidDataException(
"RGBBitCount must be less than or equal to 32.");
}
if (Header.PixelFormat.RGBBitCount != 32)
{
throw new NotImplementedException(
"Reading DDS files with non 32-bit data is not yet supported.");
}
pixelsPerBlock = 1;
CompressionFormat = CompressionFormats.None;
blockSize = (byte)(Header.PixelFormat.RGBBitCount / 8);
PixelFormat = PixelFormats.RGBA;
}
// Whether or not uncompressed pixels need to be re-arranged to RGBA
bool isARGB = (CompressionFormat == CompressionFormats.None &&
Header.PixelFormat.RGBBitCount == 32 &&
Header.PixelFormat.ABitMask == 0xFF000000 &&
Header.PixelFormat.RBitMask == 0xFF0000 &&
Header.PixelFormat.GBitMask == 0xFF00 &&
Header.PixelFormat.BBitMask == 0xFF);
// Data
uint width = Width, height = Height;
ColorData = new byte[mipmapCount * depth][];
for (uint slice = 0; slice < depth; ++slice)
{
for (uint level = 0; level < mipmapCount; ++level)
{
// Pad out width/height to 4x4 blocks
if (CompressionFormat != CompressionFormats.None)
{
if (width % 4 != 0)
{
width = ((width / 4) + 1) * 4;
}
if (height % 4 != 0)
{
height = ((height / 4) + 1) * 4;
}
}
// Compute size of this block
uint size = ((width * height) / pixelsPerBlock) * blockSize;
// Re-arrange uncompressed pixels to RGBA8 format if necessary
if (isARGB)
{
uint p;
ColorData[level] = new byte[size];
for (uint i = 0; i < size; i += 4)
{
// Convert from ARGB8 to RGBA8
p = reader.ReadUInt32();
ColorData[level][i] = (byte)((p & Header.PixelFormat.RBitMask) >> 16);
ColorData[level][i + 1] =
(byte)((p & Header.PixelFormat.GBitMask) >> 8);
ColorData[level][i + 2] = (byte)(p & Header.PixelFormat.BBitMask);
ColorData[level][i + 3] =
(byte)((p & Header.PixelFormat.ABitMask) >> 24);
}
}
// Otherwise, simply read the block
else
{
ColorData[level] = reader.ReadBytes((int)size);
}
// Divide width/height by 2 for the next mipmap
width /= 2;
height /= 2;
}
}
}
public void SetFlags(TexFormat format, bool isDX10, bool isCubemap)
{
var dxgiFormat = (DXGI_FORMAT)format;
MainHeader.Flags = (uint)(DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT | DDSD.MIPMAPCOUNT | DDSD.LINEARSIZE);
PfHeader.Caps1 = (uint)DDSCAPS.TEXTURE;
if (MainHeader.MipCount > 1)
{
PfHeader.Caps1 |= (uint)(DDSCAPS.COMPLEX | DDSCAPS.MIPMAP);
}
if (isCubemap)
{
PfHeader.Caps2 |= (uint)(DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEX | DDSCAPS2.CUBEMAP_NEGATIVEX |
DDSCAPS2.CUBEMAP_POSITIVEY | DDSCAPS2.CUBEMAP_NEGATIVEY |
DDSCAPS2.CUBEMAP_POSITIVEZ | DDSCAPS2.CUBEMAP_NEGATIVEZ);
}
if (isDX10)
{
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_DX10;
Dx10Header.DxgiFormat = (uint)dxgiFormat;
if (isCubemap)
{
Dx10Header.ArrayCount = (ArrayCount / 6);
Dx10Header.MiscFlags1 = 0x4;
}
return;
}
var masks = DDS_RGBA.GetMasks(format);
PfHeader.RBitMask = masks[0];
PfHeader.GBitMask = masks[1];
PfHeader.BBitMask = masks[2];
PfHeader.ABitMask = masks[3];
PfHeader.RgbBitCount = 0x8 * TextureFormatHelper.GetBytesPerPixel(format);
PfHeader.Flags = (uint)(DDPF.RGB | DDPF.ALPHAPIXELS);
switch (format)
{
case TexFormat.RGBA8_UNORM:
case TexFormat.RGB8_SRGB:
break;
case TexFormat.RGB565_UNORM:
PfHeader.Flags = (uint)(DDPF.RGB | DDPF.ALPHAPIXELS);
break;
case TexFormat.BC1_SRGB:
case TexFormat.BC1_UNORM:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_DXT1;
break;
case TexFormat.BC2_SRGB:
case TexFormat.BC2_UNORM:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_DXT3;
break;
case TexFormat.BC3_SRGB:
case TexFormat.BC3_UNORM:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_DXT5;
break;
case TexFormat.BC4_UNORM:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_BC4U;
break;
case TexFormat.BC4_SNORM:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_BC4S;
break;
case TexFormat.BC5_UNORM:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_BC5U;
break;
case TexFormat.BC5_SNORM:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_BC5S;
break;
case TexFormat.BC6H_SF16:
case TexFormat.BC6H_UF16:
case TexFormat.BC7_UNORM:
case TexFormat.BC7_SRGB:
PfHeader.Flags = (uint)DDPF.FOURCC;
PfHeader.FourCC = FOURCC_DX10;
if (Dx10Header == null)
{
Dx10Header = new DX10Header();
}
Dx10Header.DxgiFormat = (uint)dxgiFormat;
break;
}
}
