public static DdsPixelFormat ReadDdsPixelFormat(Stream inputStream)
{
DdsPixelFormat result = new DdsPixelFormat();
result.Read(inputStream);
return(result);
}
private static DdsPixelFormat DdsPfDx(int fourCc)
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.FourCc,
FourCc = fourCc
};
return(pixelFormat);
}
protected bool Equals(DdsPixelFormat other)
{
return(Size == other.Size &&
Flags == other.Flags &&
FourCc == other.FourCc &&
RgbBitCount == other.RgbBitCount &&
RBitMask == other.RBitMask &&
GBitMask == other.GBitMask &&
BBitMask == other.BBitMask &&
ABitMask == other.ABitMask);
}
public static int CalculateImageSize(DdsPixelFormat pixelFormat, int width, int height)
{
if (pixelFormat.RgbBitCount > 0)
return (width*height*pixelFormat.RgbBitCount)/8;
if (pixelFormat.Equals(DdsPfDxt1()))
return ((width*height*32)/8)/8;
if (pixelFormat.Equals(DdsPfDxt3()))
return ((width*height*32)/4)/8;
if (pixelFormat.Equals(DdsPfDxt5()))
return ((width*height*32)/4)/8;
throw new NotImplementedException("Could not calculate the image size of the current pixel format.");
}
public static DdsPixelFormat DdsLuminance()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Luminance,
RgbBitCount = 8,
RBitMask = 0x000000ff
};
return(pixelFormat);
}
public static DdsPixelFormat DdsPfR8G8B8()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Rgb,
FourCc = 0,
RgbBitCount = 24,
RBitMask = 0x00ff0000,
GBitMask = 0x0000ff00,
BBitMask = 0x000000ff,
ABitMask = 0x00000000
};
return(pixelFormat);
}
public static DdsPixelFormat DdsPfR5G6B5()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Rgb,
FourCc = 0,
RgbBitCount = 16,
RBitMask = 0x0000f800,
GBitMask = 0x000007e0,
BBitMask = 0x0000001f,
ABitMask = 0x00000000
};
return(pixelFormat);
}
public static int GetMinimumImageSize(DdsPixelFormat pixelFormat)
{
if (pixelFormat.Equals(DdsPfDxt1()))
{
return(8);
}
if (pixelFormat.Equals(DdsPfDxt3()))
{
return(16);
}
if (pixelFormat.Equals(DdsPfDxt5()))
{
return(16);
}
return(4);
}
public static DdsPixelFormat DdsPfA4R4G4B4()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Rgba,
FourCc = 0,
RgbBitCount = 16,
RBitMask = 0x00000f00,
GBitMask = 0x000000f0,
BBitMask = 0x0000000f,
ABitMask = 0x0000f000
};
return(pixelFormat);
}
public static int CalculateImageSize(DdsPixelFormat pixelFormat, int width, int height, int depth)
{
if (pixelFormat.RgbBitCount > 0)
{
return((int)((long)width * height * depth * pixelFormat.RgbBitCount / 8));
}
if (pixelFormat.Equals(DdsPfDxt1()))
{
return((int)((long)width * height * depth) / 2); // ((width*height*32)/8)/8;
}
if (pixelFormat.Equals(DdsPfDxt3()))
{
return(width * height * depth); // ((width*height*32)/4)/8;
}
if (pixelFormat.Equals(DdsPfDxt5()))
{
return(width * height * depth); // ((width*height*32)/4)/8;
}
throw new ArgumentException("Could not calculate the image size of the current pixel format.");
}
public static DdsFileHeader Read(Stream inputStream)
{
DdsFileHeader result = new DdsFileHeader();
BinaryReader reader = new BinaryReader(inputStream, Encoding.Default, true);
result.Size = reader.ReadInt32();
result.Flags = (DdsFileHeaderFlags)reader.ReadInt32();
result.Height = reader.ReadInt32();
result.Width = reader.ReadInt32();
result.PitchOrLinearSize = reader.ReadInt32();
result.Depth = reader.ReadInt32();
result.MipMapCount = reader.ReadInt32();
// int Reserved1[11];
reader.Skip(44);
result.PixelFormat = DdsPixelFormat.ReadDdsPixelFormat(inputStream);
result.Caps = (DdsSurfaceFlags)reader.ReadInt32();
result.Caps2 = (DdsCubemap)reader.ReadInt32();
result.Caps3 = reader.ReadInt32();
result.Caps4 = reader.ReadInt32();
// int Reserved2;
reader.Skip(4);
return(result);
}
public static DdsPixelFormat DdsPfA4R4G4B4()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Rgba,
FourCc = 0,
RgbBitCount = 16,
RBitMask = 0x00000f00,
GBitMask = 0x000000f0,
BBitMask = 0x0000000f,
ABitMask = 0x0000f000
};
return pixelFormat;
}
public static DdsPixelFormat ReadDdsPixelFormat(Stream inputStream)
{
DdsPixelFormat result = new DdsPixelFormat();
result.Read(inputStream);
return result;
}
public static int GetMinimumImageSize(DdsPixelFormat pixelFormat)
{
if (pixelFormat.Equals(DdsPfDxt1()))
return 8;
if (pixelFormat.Equals(DdsPfDxt3()))
return 16;
if (pixelFormat.Equals(DdsPfDxt5()))
return 16;
return 4;
}
protected bool Equals(DdsPixelFormat other)
{
return Size == other.Size &&
Flags == other.Flags &&
FourCc == other.FourCc &&
RgbBitCount == other.RgbBitCount &&
RBitMask == other.RBitMask &&
GBitMask == other.GBitMask &&
BBitMask == other.BBitMask &&
ABitMask == other.ABitMask;
}
private static DdsPixelFormat DdsPfDx(int fourCc)
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.FourCc,
FourCc = fourCc
};
return pixelFormat;
}
public static DdsPixelFormat DdsLuminance()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Luminance,
RgbBitCount = 8,
RBitMask = 0x000000ff
};
return pixelFormat;
}
public static DdsPixelFormat DdsPfA1R5G5B5()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Rgba,
FourCc = 0,
RgbBitCount = 16,
RBitMask = 0x00007c00,
GBitMask = 0x000003e0,
BBitMask = 0x0000001f,
ABitMask = 0x00008000
};
return pixelFormat;
}
public static DdsPixelFormat DdsPfR8G8B8()
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.Rgb,
FourCc = 0,
RgbBitCount = 24,
RBitMask = 0x00ff0000,
GBitMask = 0x0000ff00,
BBitMask = 0x000000ff,
ABitMask = 0x00000000
};
return pixelFormat;
}
