Converting a simple opengl project to CUDA

We've .c source files which can do volume rendering using four threads. - need to port it to CUDA to leverage parallel processing. - not much work to do if you are already familiar with CUDA. (In fact, you might only need to port one function to CUDA to get it work.) - need to get it done asap. - deadline 2-3 days at most. - download the current working volume rendering project in C from [login to view URL] - the program should behave as RENDER.exe.