Forum Discussion
Lens distortion model for DirectX raytracing based rendering?
I'm interested in experimenting with VR rendering using DirectX raytracing where the Rift lens distortion could be directly corrected in the ray generation shader rather than rendering an undistorted...
@volgaksoy thanks for the info, for some reason I missed the notification for your reply and only just saw it. I'm still waiting on my RTX GPU but yeah this is really about being able to experiment with approaches that might make more sense with future generations of hardware, not necessarily for anything shipping in the near term. Variable Rate Shading does look like an interesting option but I do think longer term it will make sense for VR to do all the optical compensation as part of ray generation and it would be great to start experimenting with potential futures now!
As @thewhiteambit says, I think there are interesting applications for tracing primary rays even now for specialized use cases. We're probably not looking at general purpose engines moving straight to tracing primary rays but there are interesting possibilities for use cases like data visualization, fractal fly throughs, CAD data, etc. where tracing primary rays may make sense in the nearer term and again it would be cool to be able to experiment now.