Another slight speedup

Further optimization helped to speed up a bit more.

Another speedup: now ~70fps@1920x1024

Seems working on the algorithm pays off. Todays version reaches an even higher performance.
Also better performance for the forest scene as well (960x512@~100fps)

OpenCL Happy Buddha Raycasting 1920x1024@50fps

Here a first glimpse of  a new optimization. The good old Happy Buddha scene (1024^3) raycasted at 50 fps at almost HD resolution (1920x1024). Video below. For 960x512 it renders at 150 fps.

Instancing: Combined AABB + Voxel raycasting

Here a first combined test by raycasting 10.000 to 100.000 models.

Due to the mixed kernel, performance is not as good as pure octree.