public static PngFile ReadFile(ParsedPath pngFileName)
{
PngFile pngFile = new PngFile();
ImageSurface image = new ImageSurface(pngFileName);
if (image.Format != Format.ARGB32)
throw new NotSupportedException("Only PNG's in ARGB32 format currently supported");
pngFile.Width = image.Width;
pngFile.Height = image.Height;
pngFile.RgbaData = GetRgbaData(image);
return pngFile;
}
public static PngFile ReadFile(ParsedPath pngFileName)
{
PngFile pngFile = new PngFile();
ImageSurface image = new ImageSurface(pngFileName);
if (image.Format != Format.ARGB32)
{
throw new NotSupportedException("Only PNG's in ARGB32 format currently supported");
}
pngFile.Width = image.Width;
pngFile.Height = image.Height;
pngFile.RgbaData = GetRgbaData(image);
return(pngFile);
}
public static void ExportPngToDxt(ParsedPath pngFileName, ParsedPath dxtFileName)
{
PngFile pngFile = PngFileReader.ReadFile(pngFileName);
SquishMethod?squishMethod = null;
switch (dxtFileName.Extension)
{
case ".dxt1":
squishMethod = SquishMethod.Dxt1;
break;
case ".dxt3":
squishMethod = SquishMethod.Dxt3;
break;
case ".dxt5":
squishMethod = SquishMethod.Dxt5;
break;
default:
break;
}
byte[] rgbaData;
if (squishMethod.HasValue)
{
rgbaData = Squish.CompressImage(
pngFile.RgbaData, pngFile.Width, pngFile.Height,
squishMethod.Value, SquishFit.IterativeCluster, SquishMetric.Default, SquishExtra.None);
}
else
{
rgbaData = null;
}
using (BinaryWriter writer = new BinaryWriter(new FileStream(dxtFileName, FileMode.Create)))
{
writer.Write(pngFile.Width);
writer.Write(pngFile.Height);
writer.Write(rgbaData);
}
}
