I have a good amount of experience with DirectDraw, but not so much with GDI/GDI+ or Direct3D, so I don't really know is this would work or is a good idea.ģ) There may be other ways of making Graphics.DrawImage run faster than I am not aware of. I think I could work around it by making my own wrapper for CachedBitmap.Ģ) I've also considered using a combination of System.Drawing and either Managed DirectDraw or Managed Direct3D. So, my question is, what can I do to speed up the draw image operations? I have considered three possibilities.ġ) I have read that GDI+ has something called a CachedBitmap that optimizes image draws, but for some reason it isn't exposed as a managed class (its an internal class of the System.Drawing namespace). Given the amount of bitmaps being copied, my experience with DirectDraw tells me that this can be done much faster. Rendering a portion of the screen where all the controls involved have already been double-buffered still takes about 70ms or more. These optimizations have sped things up considerably, but its still a little too slow.

I have also used a dirty rectangle scheme to reduce the amount of drawing that needs to occure. Then, each time the control's Draw method is invoked, the control simply uses DrawImage to draw itself to the Graphics object instead of having to draw itself from scratch. If a control's draw method is called many times such that it draws the same thing over and over again, it draws itself to an internal Bitmap object. To speed things up, I implemented double-buffering for my controls. Many of the controls use path gradients and other advanced functions from the System.Drawing API. So far, all is working quite well, but my rendering time is a little on the slow side. That is, the Windows.Forms control passes keyboard, mouse, and redraw events to objects from my custom GUI library for processing. So, what I have done is created my own custom GUI library that is currently 'hosted' in a Windows.Forms control.

Because of some of the visual techniques that the application requires, I decided that it would not work well to represent each control as a Windows.Forms control. It is similar to a 2D game interface, in some ways. NET that has some very specific requirements for a very rich and sophisticated visual interface.

Draw fast download