public Texture(TextureNative native)
{
Native = native;
}
private static LoadedTexture Convert(TextureNative src)
{
TextureFormat format;
var loadMips = (src.Format & RasterFormat.ExtMipMap) == RasterFormat.ExtMipMap;
var autoMips = (src.Format & RasterFormat.ExtAutoMipMap) == RasterFormat.ExtAutoMipMap;
switch (src.Format & RasterFormat.NoExt)
{
case RasterFormat.BGRA8:
case RasterFormat.BGR8:
format = TextureFormat.RGBA32;
break;
case RasterFormat.LUM8:
format = TextureFormat.Alpha8;
break;
case RasterFormat.R4G4B4A4:
format = TextureFormat.RGBA4444;
break;
case RasterFormat.A1R5G5B5:
format = TextureFormat.ARGB32;
break;
case RasterFormat.R5G6B5:
format = TextureFormat.RGB565;
break;
default:
throw new NotImplementedException(string.Format("RasterFormat.{0}", src.Format & RasterFormat.NoExt));
}
switch (src.Compression)
{
case CompressionMode.None:
break;
case CompressionMode.DXT1:
format = TextureFormat.DXT1;
break;
case CompressionMode.DXT3:
format = TextureFormat.DXT5;
break;
default:
throw new NotImplementedException(string.Format("CompressionMode.{0}", src.Compression));
}
var tex = new Texture2D(src.Width, src.Height, format, false /*loadMips*/);
switch (src.FilterFlags)
{
case Filter.None:
case Filter.Nearest:
case Filter.MipNearest:
tex.filterMode = FilterMode.Point;
break;
case Filter.Linear:
case Filter.MipLinear:
case Filter.LinearMipNearest:
tex.filterMode = FilterMode.Bilinear;
break;
case Filter.LinearMipLinear:
case Filter.Unknown:
tex.filterMode = FilterMode.Trilinear;
break;
}
var data = src.ImageData;
switch (src.Format & RasterFormat.NoExt)
{
case RasterFormat.BGR8:
case RasterFormat.BGRA8:
data = ConvertBGRToRGB(data);
break;
}
switch (src.Compression)
{
case CompressionMode.DXT3:
data = ConvertDXT3ToDXT5(data);
break;
}
tex.LoadRawTextureData(data);
tex.Apply(loadMips || autoMips,
false /* true */); // makeNoLongerReadable: needed to flip GUI textures. doubles memory used for textures!
return(new LoadedTexture(tex, src.Alpha));
}