public static DdsFormat MakeSrgb(DdsFormat format)
{
switch (format)
{
case DdsFormat.R8G8B8A8UNorm:
return(DdsFormat.R8G8B8A8UNormSrgb);
case DdsFormat.BC1UNorm:
return(DdsFormat.BC1UNormSrgb);
case DdsFormat.BC2UNorm:
return(DdsFormat.BC2UNormSrgb);
case DdsFormat.BC3UNorm:
return(DdsFormat.BC3UNormSrgb);
case DdsFormat.B8G8R8A8UNorm:
return(DdsFormat.B8G8R8A8UNormSrgb);
case DdsFormat.B8G8R8X8UNorm:
return(DdsFormat.B8G8R8X8UNormSrgb);
case DdsFormat.BC7UNorm:
return(DdsFormat.BC7UNormSrgb);
default:
return(format);
}
}
public static Bitmap ToBitmap(byte[] d, int width, int height, DdsFormat format)
{
byte[] pixels = new byte[width * height * 4];
if (format == DdsFormat.Dxt1)
{
DecodeDxt1(pixels, d, width, height);
}
if (format == DdsFormat.Dxt3)
{
DecodeDxt3(pixels, d, width, height);
}
if (format == DdsFormat.Dxt5)
{
DecodeDxt5(pixels, d, width, height);
}
Bitmap bmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
BitmapData bmpData = bmp.LockBits(
new Rectangle(0, 0, bmp.Width, bmp.Height),
ImageLockMode.WriteOnly, bmp.PixelFormat);
Marshal.Copy(pixels, 0, bmpData.Scan0, pixels.Length);
bmp.UnlockBits(bmpData);
return(bmp);
}
uint[] baseImage; //ARGB uint array
#endregion
public Dds(DdsFormat ddsFormat, int width, int height, uint[] imageData)
{
if (imageData.Length != width * height)
throw new ArgumentException("Image data must contain width * height elements");
header = new DdsHeader(ddsFormat, width, height);
baseImage = (uint[])imageData.Clone();
}
uint aBitMask;//104
public DdsPixelFormat(DdsFormat ddsFormat)
{
if (!Enum.IsDefined(typeof(DdsFormat), ddsFormat))
throw new ArgumentException(String.Format("Requested DDS format 0x{0:8X} is unsupported", (uint)ddsFormat));
size = 32;
flags = 0;
fourCC = 0;
rgbBitCount = rBitMask = gBitMask = bBitMask = gBitMask = 0;
switch (ddsFormat)
{
case DdsFormat.DXT1:
flags |= PFFlags.fourCC;
fourCC = PFFourCC.dxt1;
break;
case DdsFormat.DXT3:
flags |= PFFlags.fourCC;
fourCC = PFFourCC.dxt3;
break;
case DdsFormat.DXT5:
flags |= PFFlags.fourCC;
fourCC = PFFourCC.dxt5;
break;
case DdsFormat.A8L8:
flags |= PFFlags.luminence | PFFlags.alphaPixels;
rgbBitCount = 16;
aBitMask = 0x0000ff00;
rBitMask = 0x000000ff;
break;
case DdsFormat.A8R8G8B8:
flags |= PFFlags.rgb | PFFlags.alphaPixels;
rgbBitCount = 32;
aBitMask = 0xff000000;
rBitMask = 0x00ff0000;
gBitMask = 0x0000ff00;
bBitMask = 0x000000ff;
break;
case DdsFormat.X8R8G8B8:
flags |= PFFlags.rgb;
rgbBitCount = 32;
rBitMask = 0x00ff0000;
gBitMask = 0x0000ff00;
bBitMask = 0x000000ff;
break;
case DdsFormat.A8B8G8R8:
flags |= PFFlags.rgb | PFFlags.alphaPixels;
rgbBitCount = 32;
aBitMask = 0xff000000;
rBitMask = 0x000000ff;
gBitMask = 0x0000ff00;
bBitMask = 0x00ff0000;
break;
case DdsFormat.X8B8G8R8:
flags |= PFFlags.rgb;
rgbBitCount = 32;
rBitMask = 0x000000ff;
gBitMask = 0x0000ff00;
bBitMask = 0x00ff0000;
break;
case DdsFormat.R8G8B8:
flags |= PFFlags.rgb;
rgbBitCount = 24;
rBitMask = 0x00ff0000;
gBitMask = 0x0000ff00;
bBitMask = 0x000000ff;
break;
case DdsFormat.A4R4G4B4:
flags |= PFFlags.rgb | PFFlags.alphaPixels;
rgbBitCount = 16;
aBitMask = 0x0000f000;
rBitMask = 0x00000f00;
gBitMask = 0x000000f0;
bBitMask = 0x0000000f;
break;
case DdsFormat.A1R5G5B5:
flags |= PFFlags.rgb | PFFlags.alphaPixels;
rgbBitCount = 16;
aBitMask = 0x00008000;
rBitMask = 0x00007c00;
gBitMask = 0x000003e0;
bBitMask = 0x0000001f;
break;
case DdsFormat.R5G6B5:
flags |= PFFlags.rgb;
rgbBitCount = 16;
rBitMask = 0x0000f800;
gBitMask = 0x000007e0;
bBitMask = 0x0000001f;
break;
default:
throw new ArgumentOutOfRangeException("Unsupported DDS format.");
}
}
uint reserved2;//124
#endregion
public DdsHeader(DdsFormat ddsFormat, int width, int height)
{
this.magic = DdsMagic.dds_;
this.size = 124;
//flags
this.height = (uint)height;
this.width = (uint)width;
//pitchOrLinearSize
this.depth = 0;
this.numMipMaps = 0;
for (int i = 0; i < reserved1.Length; i++) this.reserved1[i] = 0;
this.pixelFormat = new DdsPixelFormat(ddsFormat);
this.surfaceCaps = DdsSurfaceCaps.texture;
this.cubeMapCaps = 0;
this.unusedCaps3 = 0;
this.unusedCaps4 = 0;
this.reserved2 = 0;
this.flags = writeFlags | (IsBlockCompressed ? DdsFlags.linearSize : DdsFlags.pitch);
this.pitchOrLinearSize = IsBlockCompressed ? LinearSize : Pitch;
}
public static int GetBitsPerPixel(DdsFormat format)
{
switch (format)
{
case DdsFormat.R32G32B32A32Typeless:
case DdsFormat.R32G32B32A32Float:
case DdsFormat.R32G32B32A32UInt:
case DdsFormat.R32G32B32A32SInt:
return(128);
case DdsFormat.R32G32B32Typeless:
case DdsFormat.R32G32B32Float:
case DdsFormat.R32G32B32UInt:
case DdsFormat.R32G32B32SInt:
return(96);
case DdsFormat.R16G16B16A16Typeless:
case DdsFormat.R16G16B16A16Float:
case DdsFormat.R16G16B16A16UNorm:
case DdsFormat.R16G16B16A16UInt:
case DdsFormat.R16G16B16A16SNorm:
case DdsFormat.R16G16B16A16SInt:
case DdsFormat.R32G32Typeless:
case DdsFormat.R32G32Float:
case DdsFormat.R32G32UInt:
case DdsFormat.R32G32SInt:
case DdsFormat.R32G8X24Typeless:
case DdsFormat.D32FloatS8X24UInt:
case DdsFormat.R32FloatX8X24Typeless:
case DdsFormat.X32TypelessG8X24UInt:
case DdsFormat.Y416:
case DdsFormat.Y210:
case DdsFormat.Y216:
return(64);
case DdsFormat.R10G10B10A2Typeless:
case DdsFormat.R10G10B10A2UNorm:
case DdsFormat.R10G10B10A2UInt:
case DdsFormat.R11G11B10Float:
case DdsFormat.R8G8B8A8Typeless:
case DdsFormat.R8G8B8A8UNorm:
case DdsFormat.R8G8B8A8UNormSrgb:
case DdsFormat.R8G8B8A8UInt:
case DdsFormat.R8G8B8A8SNorm:
case DdsFormat.R8G8B8A8SInt:
case DdsFormat.R16G16Typeless:
case DdsFormat.R16G16Float:
case DdsFormat.R16G16UNorm:
case DdsFormat.R16G16UInt:
case DdsFormat.R16G16SNorm:
case DdsFormat.R16G16SInt:
case DdsFormat.R32Typeless:
case DdsFormat.D32Float:
case DdsFormat.R32Float:
case DdsFormat.R32UInt:
case DdsFormat.R32SInt:
case DdsFormat.R24G8Typeless:
case DdsFormat.D24UNormS8UInt:
case DdsFormat.R24UNormX8Typeless:
case DdsFormat.X24TypelessG8UInt:
case DdsFormat.R9G9B9E5SharedExp:
case DdsFormat.R8G8B8G8UNorm:
case DdsFormat.G8R8G8B8UNorm:
case DdsFormat.B8G8R8A8UNorm:
case DdsFormat.B8G8R8X8UNorm:
case DdsFormat.R10G10B10XRBiasA2UNorm:
case DdsFormat.B8G8R8A8Typeless:
case DdsFormat.B8G8R8A8UNormSrgb:
case DdsFormat.B8G8R8X8Typeless:
case DdsFormat.B8G8R8X8UNormSrgb:
case DdsFormat.AYuv:
case DdsFormat.Y410:
case DdsFormat.Yuy2:
return(32);
case DdsFormat.P010:
case DdsFormat.P016:
return(24);
case DdsFormat.R8G8Typeless:
case DdsFormat.R8G8UNorm:
case DdsFormat.R8G8UInt:
case DdsFormat.R8G8SNorm:
case DdsFormat.R8G8SInt:
case DdsFormat.R16Typeless:
case DdsFormat.R16Float:
case DdsFormat.D16UNorm:
case DdsFormat.R16UNorm:
case DdsFormat.R16UInt:
case DdsFormat.R16SNorm:
case DdsFormat.R16SInt:
case DdsFormat.B5G6R5UNorm:
case DdsFormat.B5G5R5A1UNorm:
case DdsFormat.A8P8:
case DdsFormat.B4G4R4A4UNorm:
return(16);
case DdsFormat.NV12:
case DdsFormat.P420Opaque:
case DdsFormat.NV11:
return(12);
case DdsFormat.R8Typeless:
case DdsFormat.R8UNorm:
case DdsFormat.R8UInt:
case DdsFormat.R8SNorm:
case DdsFormat.R8SInt:
case DdsFormat.A8UNorm:
case DdsFormat.AI44:
case DdsFormat.IA44:
case DdsFormat.P8:
return(8);
case DdsFormat.R1UNorm:
return(1);
case DdsFormat.BC1Typeless:
case DdsFormat.BC1UNorm:
case DdsFormat.BC1UNormSrgb:
case DdsFormat.BC4Typeless:
case DdsFormat.BC4UNorm:
case DdsFormat.BC4SNorm:
return(4);
case DdsFormat.BC2Typeless:
case DdsFormat.BC2UNorm:
case DdsFormat.BC2UNormSrgb:
case DdsFormat.BC3Typeless:
case DdsFormat.BC3UNorm:
case DdsFormat.BC3UNormSrgb:
case DdsFormat.BC5Typeless:
case DdsFormat.BC5UNorm:
case DdsFormat.BC5SNorm:
case DdsFormat.BC6HalfTypeless:
case DdsFormat.BC6HalfUF16:
case DdsFormat.BC6HalfSF16:
case DdsFormat.BC7Typeless:
case DdsFormat.BC7UNorm:
case DdsFormat.BC7UNormSrgb:
return(8);
default:
return(0);
}
}
public static void GetSurfaceInfo(int width, int height, DdsFormat format, out int outNumBytes, out int outRowBytes, out int outNumRows)
{
bool bc = false;
bool packed = false;
bool planar = false;
int bpe = 0;
switch (format)
{
case DdsFormat.BC1Typeless:
case DdsFormat.BC1UNorm:
case DdsFormat.BC1UNormSrgb:
case DdsFormat.BC4Typeless:
case DdsFormat.BC4UNorm:
case DdsFormat.BC4SNorm:
bc = true;
bpe = 8;
break;
case DdsFormat.BC2Typeless:
case DdsFormat.BC2UNorm:
case DdsFormat.BC2UNormSrgb:
case DdsFormat.BC3Typeless:
case DdsFormat.BC3UNorm:
case DdsFormat.BC3UNormSrgb:
case DdsFormat.BC5Typeless:
case DdsFormat.BC5UNorm:
case DdsFormat.BC5SNorm:
case DdsFormat.BC6HalfTypeless:
case DdsFormat.BC6HalfUF16:
case DdsFormat.BC6HalfSF16:
case DdsFormat.BC7Typeless:
case DdsFormat.BC7UNorm:
case DdsFormat.BC7UNormSrgb:
bc = true;
bpe = 16;
break;
case DdsFormat.R8G8B8G8UNorm:
case DdsFormat.G8R8G8B8UNorm:
case DdsFormat.Yuy2:
packed = true;
bpe = 4;
break;
case DdsFormat.Y210:
case DdsFormat.Y216:
packed = true;
bpe = 8;
break;
case DdsFormat.NV12:
case DdsFormat.P420Opaque:
planar = true;
bpe = 2;
break;
case DdsFormat.P010:
case DdsFormat.P016:
planar = true;
bpe = 4;
break;
}
int rowBytes;
int numRows;
int numBytes;
if (bc)
{
int numBlocksWide = 0;
if (width > 0)
{
numBlocksWide = Math.Max(1, (width + 3) / 4);
}
int numBlocksHigh = 0;
if (height > 0)
{
numBlocksHigh = Math.Max(1, (height + 3) / 4);
}
rowBytes = numBlocksWide * bpe;
numRows = numBlocksHigh;
numBytes = rowBytes * numBlocksHigh;
}
else if (packed)
{
rowBytes = ((width + 1) >> 1) * bpe;
numRows = height;
numBytes = rowBytes * height;
}
else if (format == DdsFormat.NV11)
{
rowBytes = ((width + 3) >> 2) * 4;
numRows = height * 2; // Direct3D makes this simplifying assumption, although it is larger than the 4:1:1 data
numBytes = rowBytes * numRows;
}
else if (planar)
{
rowBytes = ((width + 1) >> 1) * bpe;
numBytes = (rowBytes * height) + ((rowBytes * height + 1) >> 1);
numRows = height + ((height + 1) >> 1);
}
else
{
int bpp = DdsHelpers.GetBitsPerPixel(format);
rowBytes = (width * bpp + 7) / 8; // round up to nearest byte
numRows = height;
numBytes = rowBytes * height;
}
outNumBytes = numBytes;
outRowBytes = rowBytes;
outNumRows = numRows;
}
