private static Texture2D CreateTexture2DFromBitmap(Bitmap bitmap, TextureFormat format, bool generateMipmaps, TextureTarget textureTarget)
{
using (WritePixelBuffer pixelBuffer = Device.CreateWritePixelBuffer(PixelBufferHint.Stream,
BitmapAlgorithms.SizeOfPixelsInBytes(bitmap)))
{
pixelBuffer.CopyFromBitmap(bitmap);
Texture2DDescription description = new Texture2DDescription(bitmap.Width, bitmap.Height, format, generateMipmaps);
Texture2D texture = new Texture2DGL3x(description, textureTarget);
texture.CopyFromBuffer(pixelBuffer,
TextureUtility.ImagingPixelFormatToImageFormat(bitmap.PixelFormat),
TextureUtility.ImagingPixelFormatToDatatype(bitmap.PixelFormat));
return(texture);
}
}
public void WritePixelBufferBitmap()
{
using (Bitmap bitmap = new Bitmap(1, 1))
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (WritePixelBuffer pixelBuffer = Device.CreateWritePixelBuffer(PixelBufferHint.Stream,
BitmapAlgorithms.SizeOfPixelsInBytes(bitmap)))
{
Color color = Color.FromArgb(0, 1, 2, 3);
bitmap.SetPixel(0, 0, color);
pixelBuffer.CopyFromBitmap(bitmap);
//
// Verify read back - comes back BGRA
//
BlittableBGRA[] readBackPixel = pixelBuffer.CopyToSystemMemory <BlittableBGRA>();
Assert.AreEqual(color.R, readBackPixel[0].R);
Assert.AreEqual(color.G, readBackPixel[0].G);
Assert.AreEqual(color.B, readBackPixel[0].B);
Assert.AreEqual(color.A, readBackPixel[0].A);
//
// Verify read back into bitmap
//
using (Bitmap readBackBitmap = pixelBuffer.CopyToBitmap(1, 1, PixelFormat.Format32bppArgb))
{
Assert.AreEqual(color, readBackBitmap.GetPixel(0, 0));
}
}
}