OpenCL path tracing tutorial 3: OpenGL viewport, interactive camera and defocus blur

Just a link to the source code on Github for now, I'll update this post with a more detailed description when I find a bit more time:

 Part 1 Setting up an OpenGL window

https://github.com/straaljager/OpenCL-path-tracing-tutorial-3-Part-1




Part 2 Adding an interactive camera, depth of field and progressive rendering

https://github.com/straaljager/OpenCL-path-tracing-tutorial-3-Part-2



Thanks to Erich Loftis and Brandon Miles for useful tips on improving the generation of random numbers in OpenCL to avoid the distracting artefacts (showing up as a sawtooth pattern) when using defocus blur (still not perfect but much better than before).

The next tutorial will cover rendering of triangles and triangle meshes.