Barrel Distortion

[farshizzo]

The latest version of Vizard (4.09), supports setting a higher resolution input image for post-process effects. This was added to support the new Oculus Rift HMD. For example, the following code will render to a texture that is 50% larger than the window size:

vizfx.postprocess.getEffectManager().setRenderScale(1.5)

Regarding your other questions:

You can disable a window from rendering the scene while still allowing render nodes to render the scene by using the following code:

viz.MainWindow.visible(False, viz.WORLD)

This is essentially what the post-process module does.

viz.MainScene always points to the same scene, regardless of what scene is active on the main view.