private void Init(int width, int height, TextureFormat format, int depth, int mipMapCount)
{
width = Math.Max(1, width);
height = Math.Max(1, height);
depth = Math.Max(1, depth);
mipMapCount = Math.Max(1, mipMapCount);
mSubTextures = new SubTexture[depth, mipMapCount];
for (int i = 0; i < depth; i++)
{
for (int j = 0; j < mipMapCount; j++)
{
mSubTextures[i, j] = new SubTexture(width >> j, height >> j, format, i * mipMapCount + j);
}
}
}
public static unsafe Bitmap Decode(SubTexture subTexture)
{
var bitmap = new Bitmap(subTexture.Width, subTexture.Height);
var rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
if (subTexture.Format == TextureFormat.RGB)
{
var bitmapData = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
fixed(byte *ptr = subTexture.Data)
RGBtoBGR(ptr, ( byte * )bitmapData.Scan0, subTexture.Data.Length);
bitmap.UnlockBits(bitmapData);
}
else if (subTexture.Format == TextureFormat.RGBA)
{
var bitmapData = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
fixed(byte *ptr = subTexture.Data)
ByteRGBAToInt32(ptr, ( int * )bitmapData.Scan0, subTexture.Data.Length);
bitmap.UnlockBits(bitmapData);
}
else if (subTexture.Format == TextureFormat.RGBA4)
{
var bitmapData = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
fixed(byte *ptr = subTexture.Data)
RGBA4toRGBA(ptr, ( int * )bitmapData.Scan0, subTexture.Data.Length);
bitmap.UnlockBits(bitmapData);
}
else
{
var buffer = DDSCodec.DecompressPixelDataToRGBA(subTexture.Data, subTexture.Width, subTexture.Height, TextureUtilities.GetDDSPixelFormat(subTexture.Format));
var bitmapData = bitmap.LockBits(rect, ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
Marshal.Copy(buffer, 0, bitmapData.Scan0, buffer.Length);
bitmap.UnlockBits(bitmapData);
}
return(bitmap);
}
private static unsafe void Encode(SubTexture subTexture, Bitmap bitmap)
{
bool ownsBitmap = false;
if (subTexture.Width != bitmap.Width || subTexture.Height != bitmap.Height)
{
ownsBitmap = true;
bitmap = new Bitmap(bitmap, subTexture.Width, subTexture.Height);
}
var rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
if (subTexture.Format == TextureFormat.RGB)
{
var bitmapData = bitmap.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
fixed(byte *ptr = subTexture.Data)
BGRtoRGB(( byte * )bitmapData.Scan0, ptr, subTexture.Data.Length);
bitmap.UnlockBits(bitmapData);
}
else if (subTexture.Format == TextureFormat.RGBA)
{
var bitmapData = bitmap.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
fixed(byte *ptr = subTexture.Data)
Int32RGBAToByte(( int * )bitmapData.Scan0, ptr, subTexture.Data.Length);
bitmap.UnlockBits(bitmapData);
}
else
{
var compressedPixels = DDSCodec.CompressPixelData(bitmap, TextureUtilities.GetDDSPixelFormat(subTexture.Format));
Array.Copy(compressedPixels, subTexture.Data, subTexture.Data.Length);
}
if (ownsBitmap)
{
bitmap.Dispose();
}
}
internal void Read(EndianBinaryReader reader)
{
reader.PushBaseOffset();
var signature = reader.ReadInt32();
if (signature != 0x04505854 && signature != 0x05505854)
{
throw new InvalidDataException("Invalid signature (expected TXP with type 4 or 5)");
}
int subTextureCount = reader.ReadInt32();
int info = reader.ReadInt32();
int mipMapCount = info & 0xFF;
int depth = (info >> 8) & 0xFF;
if (depth == 1 && mipMapCount != subTextureCount)
{
mipMapCount = ( byte )subTextureCount;
}
mSubTextures = new SubTexture[depth, mipMapCount];
for (int i = 0; i < depth; i++)
{
for (int j = 0; j < mipMapCount; j++)
{
reader.ReadOffset(() =>
{
mSubTextures[i, j] = new SubTexture(reader);
});
}
}
reader.PopBaseOffset();
}
