Really cool experiment. I'd love to see how much the performance could be improved by offloading a bunch of the filtering to the GPU, though I suspect that migh

Really cool experiment. I'd love to see how much the performance could be improved by offloading a bunch of the filtering to the GPU, though I suspect that might be a bit tricky due to driver constraints (and in particular how bad OS X drivers can be). Typically pixel shaders are quite capable of doing filtering and convolution even if you aren't ready for compute shaders - a mid tier GPU can handle doing filters with 29 taps or more per pixel pretty easily at 60hz. Ideally that'd get the CPU and power usage way down, freeing up CPU for things like streaming.