private static DDSFile MakeWithMipMapsFrom32bitRGBA(byte[] rawData, Converter.DXTType DXTCFormat, int width, int height, SquishFlags format)
{
int mips = CalcMips(width, height);
byte[] data = new byte[CalcDataSize(DXTCFormat, width, height, mips)];
int lastLocation = 0;
byte[] temp;
byte[] map = SquishWrapper.SquishWrapper.CompressImage(rawData, width, height, (int)format);
map.CopyTo(data, 0);
lastLocation += map.Length;
if (mips > 0)
{
for (int i = 1; i < mips; i++)
{
double reduction = (double)Math.Pow(2, i);
int redWidth = (int)Math.Round(width / reduction);
int redHeight = (int)Math.Round(height / reduction);
map = new byte[redWidth * redHeight * 4];
OpenILPort.Converter.Zoom(map, rawData, width, height, redWidth, redHeight, OpenILPort.Converter.Filter.Triangle, 1.0);
temp = SquishWrapper.SquishWrapper.CompressImage(map, redWidth, redHeight, (int)format);
temp.CopyTo(data, lastLocation);
lastLocation += temp.Length;
}
}
return(MakeFromDDSCompressedImage(data, DXTCFormat, width, height));
}
public DDSFile(byte[] file)
{
data = file;
height = data[12] + (data[13] << 8) + (data[14] << 16) + (data[15] << 24);
width = data[16] + (data[17] << 8) + (data[18] << 16) + (data[19] << 24);
switch (data[87])
{
case 0x31:
type = Converter.DXTType.DXT1;
blockwidth = 8;
alphawidth = 0;
break;
case 0x33:
type = Converter.DXTType.DXT3;
blockwidth = 16;
alphawidth = 8;
break;
case 0x35:
type = Converter.DXTType.DXT5;
blockwidth = 16;
alphawidth = 8;
break;
default:
throw new InvalidOperationException("Unsupported DDS type - only DXT1, DXT3 and DXT5 are currently supported");
}
}
public static DDSFile MakeFrom32bitBGRA(byte[] rawData, Converter.DXTType DXTCFormat, int width, int height)
{
byte[] data = new byte[rawData.Length];
rawData.CopyTo(data, 0);
for (int i = 0; i < data.Length; i += 4)
{
byte temp = data[i];
data[i] = data[i + 2];
data[i + 2] = temp;
}
return(MakeFrom32bitRGBA(data, DXTCFormat, width, height));
}
private DDSFile(byte[] ddsData, int imgWidth, int imgHeight, Converter.DXTType compression)
{
data = new byte[128 + ddsData.Length];
type = compression;
width = imgWidth;
height = imgHeight;
switch (type)
{
case Converter.DXTType.DXT1:
blockwidth = 8;
alphawidth = 0;
Converter.DXT1_Header.CopyTo(data, 0);
break;
case Converter.DXTType.DXT3:
blockwidth = 16;
alphawidth = 8;
Converter.DXT3_Header.CopyTo(data, 0);
break;
case Converter.DXTType.DXT5:
blockwidth = 16;
alphawidth = 8;
Converter.DXT5_Header.CopyTo(data, 0);
break;
default:
throw new InvalidOperationException("Unsupported DDS type - only DXT1, DXT3 and DXT5 are currently supported");
}
data[12] = (byte)height;
data[13] = (byte)(height >> 8);
data[14] = (byte)(height >> 16);
data[15] = (byte)(height >> 24);
data[16] = (byte)width;
data[17] = (byte)(width >> 8);
data[18] = (byte)(width >> 16);
data[19] = (byte)(width >> 24);
int mips = CalcMips(width, height);
data[28] = (byte)mips;
data[29] = (byte)(mips >> 8);
data[30] = (byte)(mips >> 16);
data[31] = (byte)(mips >> 24);
ddsData.CopyTo(data, 128);
}
private static int BlockSize(Converter.DXTType type)
{
if (type == Converter.DXTType.DXT1)
{
return(8);
}
else if (type == Converter.DXTType.DXT5 || type == Converter.DXTType.DXT3)
{
return(16);
}
else
{
throw new InvalidOperationException("Unsupported DDS type - only DXT1, DXT3 and DXT5 are currently supported");
}
}
private static int CalcDataSize(Converter.DXTType type, int width, int height, int mipmaps)
{
int val = 0;
byte bytes = (byte)BlockSize(type);
width = width / 4;
height = height / 4;
for (int i = 0; i < mipmaps; i++)
{
val += width * height * bytes;
width = (width > 1)?width / 2:1;
height = (height > 1)?height / 2:1;
}
return(val);
}
public static DDSFile MakeFrom32bitRGBA(byte[] rawData, Converter.DXTType DXTCFormat, int width, int height)
{
SquishFlags format;
switch (DXTCFormat)
{
case Converter.DXTType.DXT1: format = SquishFlags.kDxt1;
break;
case Converter.DXTType.DXT3: format = SquishFlags.kDxt3;
break;
case Converter.DXTType.DXT5: format = SquishFlags.kDxt5;
break;
default: throw new InvalidOperationException("Invalid DXT Type supplied: " + DXTCFormat.ToString());
}
return(MakeWithMipMapsFrom32bitRGBA(rawData, DXTCFormat, width, height, format));
}
private void bttnDxt5_Click(object sender, System.EventArgs e)
{
ChosenFormat = Converter.DXTType.DXT5;
this.Close();
}
public static DDSFile MakeFromDDSCompressedImage(byte[] rawData, Converter.DXTType DXTCFormat, int width, int height)
{
return(new DDSFile(rawData, width, height, DXTCFormat));
}
