private Helix.TextureModel ReadTexture(IGeometryMaterial mat)
{
var sub = mat?.Submaterials.FirstOrDefault(s => s.Usage == MaterialUsage.Diffuse);
if (string.IsNullOrEmpty(sub?.Bitmap?.Name))
{
return(null);
}
var key = mat.Flags.HasFlag(MaterialFlags.Transparent) ? -sub.Bitmap.Id : sub.Bitmap.Id;
Helix.TextureModel tex;
textureCache.TryGetValue(key, out tex);
if (tex == null)
{
try
{
var args = new DdsOutputArgs(mat.Flags.HasFlag(MaterialFlags.Transparent) ? DecompressOptions.Default : DecompressOptions.Bgr24);
var stream = new System.IO.MemoryStream();
sub.Bitmap.ToDds(0).WriteToStream(stream, System.Drawing.Imaging.ImageFormat.Png, args);
tex = new Helix.TextureModel(stream);
if (!textureCache.TryAdd(key, tex))
{
stream.Dispose(); //another thread beat us to it
}
}
catch
{
return(null);
}
}
return(tex);
}
public Helix.Material CreateMaterial(IGeometryMaterial mat, out bool isTransparent)
{
var diffuseTexture = ReadTexture(mat);
if (diffuseTexture == null)
{
isTransparent = false;
return(ErrorMaterial);
}
var material = new Helix.DiffuseMaterial
{
DiffuseMap = diffuseTexture
};
material.Freeze();
isTransparent = mat.Flags.HasFlag(MaterialFlags.Transparent);
return(material);
}
