public DDS(string fileName, ImageSize imgSize, string format, byte[] rawData)
: base(fileName, imgSize, format)
{
DDSHeader.magic = 0x20534444;
DDSHeader.Size = 0x7C;
DDSHeader.Flags = 0x081007;
DDSHeader.Caps = 0x1000;
DDSHeader.pfFlags = 0x4;
DDSHeader.pfSize = 0x20;
DDSHeader.Width = imgSize.width;
DDSHeader.Height = imgSize.height;
switch (format)
{
case "PF_DXT1":
case "DXT1":
DDSHeader.FourCC = (int)FourCC.DXT1;
BPP = 0.5F;
break;
case "PF_DXT5":
case "DXT5":
DDSHeader.FourCC = (int)FourCC.DXT5;
BPP = 1;
break;
case "PF_V8U8":
case "V8U8":
DDSHeader.Flags = 0x001007;
DDSHeader.pfFlags = 0x80000;
DDSHeader.RGBBitCount = 0x10;
DDSHeader.RBitMask = 0x0000FF;
DDSHeader.GBitMask = 0x00FF00;
BPP = 2;
break;
case "ATI2":
case "PF_NormalMap_HQ":
DDSHeader.FourCC = (int)FourCC.ATI2;
BPP = 1;
break;
case "PF_A8R8G8B8":
case "A8R8G8B8":
case "ARGB":
BPP = 4;
DDSHeader.pfFlags = 0x41;
DDSHeader.RGBBitCount = 0x20;
DDSHeader.RBitMask = 0xFF0000;
DDSHeader.GBitMask = 0xFF00;
DDSHeader.BBitMask = 0xFF;
DDSHeader.ABitMask = -16777216;
break;
case "PF_R8G8B8":
case "R8G8B8":
BPP = 3;
DDSHeader.pfFlags = 0x40;
DDSHeader.RGBBitCount = 0x18;
DDSHeader.RBitMask = 0xFF0000;
DDSHeader.GBitMask = 0xFF00;
DDSHeader.BBitMask = 0xFF;
DDSHeader.ABitMask = 0x0;
break;
case "PF_G8":
case "G8":
case "G8_L8":
BPP = 1;
DDSHeader.pfFlags = 0x20000;
DDSHeader.RGBBitCount = 0x8;
DDSHeader.RBitMask = 0xFF;
break;
default: throw new FormatException("Invalid DDS format");
}
imgData = rawData;
// convert DDSHeader to byte array
int headSize = Marshal.SizeOf(DDSHeader);
headData = new byte[headSize];
IntPtr ptr = Marshal.AllocHGlobal(headSize);
Marshal.StructureToPtr(DDSHeader, ptr, true);
Marshal.Copy(ptr, headData, 0, headData.Length);
Marshal.FreeHGlobal(ptr);
}
