/// <summary>
/// Creates an empty texture.
/// </summary>
/// <param name="width">Width of texture in pixel.</param>
/// <param name="height">Height of texture in pixel.</param>
/// <param name="mipLevels">Number of mip levels.</param>
/// <param name="format">Format to use for texture.</param>
/// <param name="usage">Special texture usage.</param>
/// <returns>New texture.</returns>
public ITexture2d Create(int width, int height, int mipLevels, Purple.Graphics.Format format, Purple.Graphics.TextureUsage usage)
{
ITexture2d tex = textureLoader.Create(width, height, mipLevels, format, usage);
textures.Add(new WeakReference(tex));
return(tex);
}
/// <summary>
/// loads a texture from a stream containing raw bitmap data
/// </summary>
/// <param name="stream">stream to load from</param>
/// <param name="width">width of texture</param>
/// <param name="height">height of texture</param>
/// <param name="mipLevels">number of MipMap level</param>
/// <param name="format">format of texture</param>
/// <returns>texture object</returns>
private ITexture2d LoadRaw(Stream stream, int width, int height, int mipLevels, Purple.Graphics.Format format)
{
int countBytes = width * height * Purple.Graphics.GraphicsEngine.BitsPerPixel(format) / 8;
byte[] data = new Byte[countBytes];
stream.Read(data, 0, countBytes);
System.Drawing.Bitmap bitmap;
// pin array
System.Runtime.InteropServices.GCHandle handle = System.Runtime.InteropServices.GCHandle.Alloc(data);
System.IntPtr ptr = System.Runtime.InteropServices.Marshal.UnsafeAddrOfPinnedArrayElement(data, 0);
bitmap = new System.Drawing.Bitmap(width, height, width * 3, System.Drawing.Imaging.PixelFormat.Format24bppRgb, ptr);
ITexture2d tex = TextureManager.Instance.Create(width, height, 1, Format.A8R8G8B8, TextureUsage.Normal);
tex.CopyBitmap(bitmap, new System.Drawing.Rectangle(0, 0, width, height), System.Drawing.Point.Empty);
bitmap.Dispose();
handle.Free();
return(tex);
}
