well you COULD use OpenCL to "control every pixel". Here's an example of path tracing in "realtime" (ok, it's not quite there yet) on the GPU. https://www.yo

well you COULD use OpenCL to "control every pixel". Here's an example of path tracing in "realtime" (ok, it's not quite there yet) on the GPU. https://www.youtube.com/watch?v=BpT6MkCeP7Y https://www.youtube.com/watch?v=BpT6MkCeP7Y check out this blog too: http://raytracey.blogspot.com.au/ http://raytracey.blogspot.com.au/