WebVR

[hughsk]

With WebVR picking up speed, it'd be interesting to start investigating supporting it with a small collection of modules. Namely:

• Calculating the projection matrices for each eye of a HMD, as seen in WebVRRenderer.
• Post-processing shaders for barrel distortion, vignettes, and shifting RGB channels.

[deathcap]

Calculating the projection matrices for each eye of a HMD, as seen in WebVRRenderer.

gl-mat4 now has perspectiveFromFieldOfView to help with this, accepts a field of view object from WebVR getRecommendedEyeFieldOfView. Used it in voxel-vr but may be worth pulling out some of this code into a generic (non-voxel.js) stackgl module.

Post-processing shaders for barrel distortion, vignettes, and shifting RGB channels.

With WebVR the browser/platform is expected to perform the barrel distortion vignette (source: https://www.youtube.com/playlist?list=PLUj8-Hhrb-a0Z3f70ygX5fXLk8Sa4mTQZ), once the web app requests fullscreening to the VR device. But this still might be useful for VR without WebVR (Google Cardboard? or Oculus Rift on non-WebVR (current) browsers). References:

• Applying and removing lens distortion in post production by Gergely Vass , Tamás Perlaki (pdf) - examples: 1, 2

[nickdesaulniers]

I'm happy to start taking a look at this.

[yoshuawuyts]

@nickdesaulniers :grin:

[nickdesaulniers]

In particular, first, I'd like to abstract a first person camera to use:

• an HMD if present
• a PS if present
• fallback/polyfill device orientation

It then spits out a view and project matrix for each eye.