06-15-2010, 05:06 AM
Hi everyone. I'm trying to create a 'paint' style application that I need to overlay coordinate information onto. I'm currently drawing to the back buffer, and swapping buffers every 16ms (it's for a touchscreen demonstration). The back buffer doesn't get cleared....ever, because it's constantly being updated with new information. Can someone please point me in the right direction on the best way to overlay my coordinate info, I would be very grateful. My current thoughts are to render all drawing to AUX1, copy AUX1 to the back buffer, render my coordinate info there, then swap buffers. Is this the best way of doing it (and where do I even begin to do that ? lol) - Thanks.