public static Texture2D Pixelize(Texture2D texture, Vector2i pixels, PixelizeFunction function)
{
Ensure.False(pixels.X < 0 || pixels.Y < 0 || texture.Width < pixels.X || texture.Height < pixels.Y);
if (texture.Width == pixels.X && texture.Height == pixels.Y)
{
return texture;
}
Color[] pixelDataSource = texture.GetData<Color>();
Color[] pixelDataOutput;
if (function == PixelizeFunction.Average)
{
GraphicsHelper.PixelizeAverage(texture, pixelDataSource, pixels, out pixelDataOutput);
}
else if (function == PixelizeFunction.Center)
{
GraphicsHelper.PixelizeCenter(texture, pixelDataSource, pixels, out pixelDataOutput);
}
else
{
throw new ArgumentException("function");
}
Texture2D result = new Texture2D(texture.GraphicsDevice, texture.Width, texture.Height);
result.SetData(pixelDataOutput);
return result;
}
// These would be a lot faster to do in GPU
#region Pixelize
// Doesn't actually downscale. Downscaling could be faster
public static Texture2D Pixelize(Texture2D texture, int pixelSize, PixelizeFunction function)
{
return GraphicsHelper.Pixelize(texture, new Vector2i(texture.Width / pixelSize, texture.Height / pixelSize), function);
}
