protected static Color[,] GetDXT1ColourBlock(SubStream data, int offset, bool IsDXT3)
{
ushort c0v = data.GetUInt16(offset);
ushort c1v = data.GetUInt16(offset + 2);
Color[] c = new Color[4];
c[0] = Color.FromArgb(0xFF, (c0v >> 8) & 0xF8, (c0v >> 3) & 0xFC, (c0v << 3) & 0xF8);
c[1] = Color.FromArgb(0xFF, (c1v >> 8) & 0xF8, (c1v >> 3) & 0xFC, (c1v << 3) & 0xF8);
if (c0v > c1v || IsDXT3)
{
c[2] = Color.FromArgb(0xFF, ((int)c[0].R * 2 + c[1].R + 1) / 3, ((int)c[0].G * 2 + c[1].G + 1) / 3, ((int)c[0].B * 2 + c[1].B + 1) / 3);
c[3] = Color.FromArgb(0xFF, ((int)c[1].R * 2 + c[0].R + 1) / 3, ((int)c[1].G * 2 + c[0].G + 1) / 3, ((int)c[1].B * 2 + c[0].B + 1) / 3);
}
else
{
c[2] = Color.FromArgb(0xFF, ((int)c[0].R + c[1].R) / 2, ((int)c[0].G + c[1].G) / 2, ((int)c[0].B + c[1].B) / 2);
c[3] = Color.FromArgb(0, 0, 0, 0);
}
ulong lookup = data.GetUInt32(offset + 4);
Color[,] output = new Color[4, 4];
for (int i = 0; i < 16; i++)
{
output[i % 4, i / 4] = c[(lookup >> (i * 2)) & 3];
}
return(output);
}
protected static Color[,] GetDXT1ColourBlock(SubStream data, int offset, bool IsDXT3)
{
ushort c0v = data.GetUInt16(offset);
ushort c1v = data.GetUInt16(offset + 2);
Color[] c = new Color[4];
c[0] = Color.FromArgb(0xFF, (c0v >> 8) & 0xF8, (c0v >> 3) & 0xFC, (c0v << 3) & 0xF8);
c[1] = Color.FromArgb(0xFF, (c1v >> 8) & 0xF8, (c1v >> 3) & 0xFC, (c1v << 3) & 0xF8);
if (c0v > c1v || IsDXT3)
{
c[2] = Color.FromArgb(0xFF, ((int)c[0].R * 2 + c[1].R + 1) / 3, ((int)c[0].G * 2 + c[1].G + 1) / 3, ((int)c[0].B * 2 + c[1].B + 1) / 3);
c[3] = Color.FromArgb(0xFF, ((int)c[1].R * 2 + c[0].R + 1) / 3, ((int)c[1].G * 2 + c[0].G + 1) / 3, ((int)c[1].B * 2 + c[0].B + 1) / 3);
}
else
{
c[2] = Color.FromArgb(0xFF, ((int)c[0].R + c[1].R) / 2, ((int)c[0].G + c[1].G) / 2, ((int)c[0].B + c[1].B) / 2);
c[3] = Color.FromArgb(0, 0, 0, 0);
}
ulong lookup = data.GetUInt32(offset + 4);
Color[,] output = new Color[4, 4];
for (int i = 0; i < 16; i++)
{
output[i % 4, i / 4] = c[(lookup >> (i * 2)) & 3];
}
return output;
}
public DDSImage(SubStream data)
{
if (data.GetByte(0) == 'D' && data.GetByte(1) == 'D' && data.GetByte(2) == 'S' && data.GetByte(3) == ' ')
{
Height = data.GetInt32(12);
Width = data.GetInt32(16);
Depth = data.GetInt32(24);
Flags = data.GetUInt32(8);
Pitch = data.GetInt32(20);
FourCC = Encoding.ASCII.GetString(data.GetBytes(84, 4));
RGBBitCount = data.GetInt32(88);
RedMask = data.GetUInt32(92);
GreenMask = data.GetUInt32(96);
BlueMask = data.GetUInt32(100);
AlphaMask = data.GetUInt32(104);
Data = data;
ImageOffset = 128;
if (Depth == 0)
{
Depth = 1;
}
if ((Flags & 8) == 0)
{
Pitch = Width * RGBBitCount / 8;
}
IsARGB32 = (FourCC == "DXT1" || FourCC == "DXT2" || FourCC == "DXT3" || FourCC == "DXT4" || FourCC == "DXT5" || FourCC == "\0\0\0\0");
IntensityFactor = 1.0;
try
{
FailureReason = null;
switch (FourCC)
{
case "DXT1":
Bitmap = GetBitmapFromDDS_DXT1(Data, ImageOffset, Width, Height, out HasAlpha);
break;
case "DXT2":
Bitmap = GetBitmapFromDDS_DXT3(Data, ImageOffset, Width, Height, true, out HasAlpha);
break;
case "DXT3":
Bitmap = GetBitmapFromDDS_DXT3(Data, ImageOffset, Width, Height, false, out HasAlpha);
break;
case "DXT4":
Bitmap = GetBitmapFromDDS_DXT5(Data, ImageOffset, Width, Height, true, out HasAlpha);
break;
case "DXT5":
Bitmap = GetBitmapFromDDS_DXT5(Data, ImageOffset, Width, Height, false, out HasAlpha);
break;
case "\0\0\0\0":
Bitmap = GetBitmapFromDDS_RAW(Data, ImageOffset, Width, Height, Pitch, RGBBitCount, RedMask, GreenMask, BlueMask, AlphaMask, out HasAlpha, out IsARGB32);
break;
case "q\0\0\0":
Bitmap = GetBitmapFromDDS_ARGB16F(Data, ImageOffset, Width, Height, out HasAlpha, out IntensityFactor);
break;
default:
Bitmap = null;
FailureReason = String.Format("Unknown DDS FourCC {0:X2}:{1:X2}:{2:X2}:{3:X2}", Data.GetByte(84), Data.GetByte(85), Data.GetByte(86), Data.GetByte(87));
break;
}
}
catch (Exception ex)
{
Bitmap = null;
FailureReason = ex.Message;
}
}
else
{
throw new NotImplementedException(String.Format("Unknown file format {0:X2}:{1:X2}:{2:X2}:{3:X2}", data.GetByte(0), data.GetByte(1), data.GetByte(2), data.GetByte(3)));
}
}
public DDSImage(SubStream data)
{
if (data.GetByte(0) == 'D' && data.GetByte(1) == 'D' && data.GetByte(2) == 'S' && data.GetByte(3) == ' ')
{
Height = data.GetInt32(12);
Width = data.GetInt32(16);
Depth = data.GetInt32(24);
Flags = data.GetUInt32(8);
Pitch = data.GetInt32(20);
FourCC = Encoding.ASCII.GetString(data.GetBytes(84, 4));
RGBBitCount = data.GetInt32(88);
RedMask = data.GetUInt32(92);
GreenMask = data.GetUInt32(96);
BlueMask = data.GetUInt32(100);
AlphaMask = data.GetUInt32(104);
Data = data;
ImageOffset = 128;
if (Depth == 0)
{
Depth = 1;
}
if ((Flags & 8) == 0)
{
Pitch = Width * RGBBitCount / 8;
}
IsARGB32 = (FourCC == "DXT1" || FourCC == "DXT2" || FourCC == "DXT3" || FourCC == "DXT4" || FourCC == "DXT5" || FourCC == "\0\0\0\0");
IntensityFactor = 1.0;
try
{
FailureReason = null;
switch (FourCC)
{
case "DXT1":
Bitmap = GetBitmapFromDDS_DXT1(Data, ImageOffset, Width, Height, out HasAlpha);
break;
case "DXT2":
Bitmap = GetBitmapFromDDS_DXT3(Data, ImageOffset, Width, Height, true, out HasAlpha);
break;
case "DXT3":
Bitmap = GetBitmapFromDDS_DXT3(Data, ImageOffset, Width, Height, false, out HasAlpha);
break;
case "DXT4":
Bitmap = GetBitmapFromDDS_DXT5(Data, ImageOffset, Width, Height, true, out HasAlpha);
break;
case "DXT5":
Bitmap = GetBitmapFromDDS_DXT5(Data, ImageOffset, Width, Height, false, out HasAlpha);
break;
case "\0\0\0\0":
Bitmap = GetBitmapFromDDS_RAW(Data, ImageOffset, Width, Height, Pitch, RGBBitCount, RedMask, GreenMask, BlueMask, AlphaMask, out HasAlpha, out IsARGB32);
break;
case "q\0\0\0":
Bitmap = GetBitmapFromDDS_ARGB16F(Data, ImageOffset, Width, Height, out HasAlpha, out IntensityFactor);
break;
default:
Bitmap = null;
FailureReason = String.Format("Unknown DDS FourCC {0:X2}:{1:X2}:{2:X2}:{3:X2}", Data.GetByte(84), Data.GetByte(85), Data.GetByte(86), Data.GetByte(87));
break;
}
}
catch (Exception ex)
{
Bitmap = null;
FailureReason = ex.Message;
}
}
else
{
throw new NotImplementedException(String.Format("Unknown file format {0:X2}:{1:X2}:{2:X2}:{3:X2}", data.GetByte(0), data.GetByte(1), data.GetByte(2), data.GetByte(3)));
}
}