BradLarson/GPUImage — pull request #1829 by bourne42 (2014-11-07 21:29:52+00:00)
Title: ThreeInputFilter bug fix and filter uniform methods

Removing some of the sources in the ThreeInputFilter (specifically the third one I believe) would cause crashes because the filter would try to render with only 2 inputs because you would only check if the second source is available. I also found all the removed code in newFrameReady to be unclear and the bug fix should be a bit clearer. From what I could tell when a sources time is indefinite it should persist from frame to frame so the fix uses that to tell what frames are ready.

There's also a small addition to GPUImageFilter to allow setting 3x3 and 4x4 matrix uniforms.