private static void Update(TextureArray2dGL texArray, IEnumerable <NamedStream> resources)
{
var count = resources.Count();
if (2 > count)
{
return;
}
var bitmaps = from res in resources select new Bitmap(res.Stream);
var first = bitmaps.First();
var levels = MathHelper.MipMapLevels(first.Width, first.Height);
var internalFormat = TextureLoaderDrawing.SelectInternalPixelFormat(first.PixelFormat);
texArray.SetFormat(first.Width, first.Height, count, levels, (SizedInternalFormat)internalFormat);
var slice = 0;
foreach (var bitmap in bitmaps)
{
var buffer = bitmap.ToBuffer();
var pixelFormat = TextureLoaderDrawing.SelectPixelFormat(bitmap.PixelFormat);
texArray.Load(buffer, slice, pixelFormat, PixelType.UnsignedByte);
++slice;
}
texArray.Filter = TextureFilterMode.Mipmap;
texArray.WrapFunction = TextureWrapFunction.ClampToEdge;
}
/// <summary>
/// Saves a rectangular area of the current frame buffer into a Bitmap
/// </summary>
/// <param name="x">start position in x-direction</param>
/// <param name="y">start position in y-direction</param>
/// <param name="width">size in x-direction</param>
/// <param name="height">size in y-direction</param>
/// <param name="rotateFlip">If <code>true</code> image will be rotated and flipped, which is correct,
/// but this is a time-consuming operation and should be switched off for fast screen capturing.
/// <code>true</code> by default.</param>
/// <returns>Bitmap</returns>
public static Bitmap ToBitmap(int x, int y, int width, int height, bool rotateFlip = true)
{
var format = System.Drawing.Imaging.PixelFormat.Format24bppRgb;
var bmp = new Bitmap(width, height);
BitmapData data = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.WriteOnly, format);
GL.ReadPixels(x, y, width, height, TextureLoaderDrawing.SelectPixelFormat(format), PixelType.UnsignedByte, data.Scan0);
bmp.UnlockBits(data);
if (rotateFlip)
{
bmp.RotateFlip();
}
return(bmp);
}