Someone please performance-test this, but I think the fragment shader code simplifications speak for themselves.
Radrark found the "line in polar coordinates" equation I needed and a diagram that explained the variables.
That equation was essentially the missing piece to the whole thing.
* Work on shadow casting.
* Shadowcasting depth works, code cleanup
* Adds #include support to SWSL parser.
* Move lighting shader to swsl.
Also more shader parser fixes.
* Move PI constant to correct file.
* Got functional FOV, working on wall bleed.
* Hey, it kinda works.
* Occluder component now lives in shared.
* Optimizations.
* Fix light map color format.
I set it to something else while testing perf.
* Front face cull final FOV pass.
* Fix holes in occlusion geometry due to disabled occluders.
* Starting work on better wall handling.
* Some comments.
* Improve font-face-culled FOV pass.
* Improve various light biasing things.
* VSM, smooth shadows.
Also unused VSM blurring because it didn't work but committing it like this will forever keep it in Git somewhere.
* FOV smoothing, looks kinda awful.
* Base wall bleed blur strength on camera size.
* The part where I give up.
* Comments. Many comments.
* Allow eyes to disable FOV.
* Improve OccluderComponent on the client.
* Update for occluder component changes.
* Maybe do this properly...
