public g1tTexture(Stream stream, EndianUtils.Endianness endian)
{
Mipmaps = (byte)stream.ReadByte();
byte format = (byte)stream.ReadByte();
byte dimensions = (byte)stream.ReadByte();
byte unknown4 = (byte)stream.ReadByte();
byte unknown5 = (byte)stream.ReadByte();
byte unknown6 = (byte)stream.ReadByte();
byte unknown7 = (byte)stream.ReadByte();
byte unknown8 = (byte)stream.ReadByte();
if (endian == EndianUtils.Endianness.LittleEndian)
{
Mipmaps = Mipmaps.SwapEndian4Bits();
dimensions = dimensions.SwapEndian4Bits();
unknown4 = unknown4.SwapEndian4Bits();
unknown5 = unknown5.SwapEndian4Bits();
unknown6 = unknown6.SwapEndian4Bits();
unknown7 = unknown7.SwapEndian4Bits();
unknown8 = unknown8.SwapEndian4Bits();
}
if (unknown8 == 0x01)
{
stream.DiscardBytes(0x0C);
}
switch (format)
{
case 0x00: Format = Textures.TextureFormat.ABGR; BitPerPixel = 32; break;
case 0x01: Format = Textures.TextureFormat.RGBA; BitPerPixel = 32; break;
case 0x06: Format = Textures.TextureFormat.DXT1a; BitPerPixel = 4; break;
case 0x08: Format = Textures.TextureFormat.DXT5; BitPerPixel = 8; break;
case 0x12: Format = Textures.TextureFormat.DXT5; BitPerPixel = 8; break; // swizzled from vita
case 0x5B: Format = Textures.TextureFormat.DXT5; BitPerPixel = 8; break; // unsure what the difference to 0x08 is
default: throw new Exception(String.Format("g1t: Unknown Format ({0:X2})", format));
}
Width = (uint)(1 << (dimensions >> 4));
Height = (uint)(1 << (dimensions & 0x0F));
uint highestMipmapSize = (Width * Height * BitPerPixel) / 8;
long textureSize = highestMipmapSize;
for (int i = 0; i < Mipmaps - 1; ++i)
{
textureSize += highestMipmapSize / (4 << (i * 2));
}
Data = new byte[textureSize];
stream.Read(Data, 0, Data.Length);
}
public g1tTexture( Stream stream, Util.Endianness endian )
{
Mipmaps = (byte)stream.ReadByte();
byte format = (byte)stream.ReadByte();
byte dimensions = (byte)stream.ReadByte();
byte unknown4 = (byte)stream.ReadByte();
byte unknown5 = (byte)stream.ReadByte();
byte unknown6 = (byte)stream.ReadByte();
byte unknown7 = (byte)stream.ReadByte();
byte unknown8 = (byte)stream.ReadByte();
if ( endian == Util.Endianness.LittleEndian ) {
Mipmaps = Mipmaps.SwapEndian4Bits();
dimensions = dimensions.SwapEndian4Bits();
unknown4 = unknown4.SwapEndian4Bits();
unknown5 = unknown5.SwapEndian4Bits();
unknown6 = unknown6.SwapEndian4Bits();
unknown7 = unknown7.SwapEndian4Bits();
unknown8 = unknown8.SwapEndian4Bits();
}
if ( unknown8 == 0x01 ) {
stream.DiscardBytes( 0x0C );
}
switch ( format ) {
case 0x00: Format = Textures.TextureFormat.ABGR; BitPerPixel = 32; break;
case 0x01: Format = Textures.TextureFormat.RGBA; BitPerPixel = 32; break;
case 0x06: Format = Textures.TextureFormat.DXT1; BitPerPixel = 4; break;
case 0x08: Format = Textures.TextureFormat.DXT5; BitPerPixel = 8; break;
default: throw new Exception( String.Format( "g1t: Unknown Format ({0:X2})", format ) );
}
Width = (uint)( 1 << ( dimensions >> 4 ) );
Height = (uint)( 1 << ( dimensions & 0x0F ) );
uint highestMipmapSize = ( Width * Height * BitPerPixel ) / 8;
long textureSize = highestMipmapSize;
for ( int i = 0; i < Mipmaps - 1; ++i ) {
textureSize += highestMipmapSize / ( 4 << ( i * 2 ) );
}
Data = new byte[textureSize];
stream.Read( Data, 0, Data.Length );
}
