aeva @aeva@mastodon.gamedev.place

Here's Tangerine, my main personal project: https://github.com/aeva/tangerine

This is a CSG system built around composing signed distance functions in Racket. These are translated to an evaluator that can be ran on the CPU, and generated shaders for fast rendering. Models can be rendered in real time, or exported to common file formats for other purposes like 3D printing.

ok. i have two mastodon accounts i'm planning on using now:

mastodon.social/@aeva is where i'll post everything, and be more likely to follow back

mastodon.gamedev.place/@aeva is where i'll post the "gamedev" subset of all that (math, Tangerine, etc)

I wonder if it would be worth writing a Tangerine "importer" for UE5. This would just be a plugin that embeds Tangerine to pipe the mesh exporter into Nanite. It seems like something that should be "easy", but I don't know that I have any motivation to do any kind of Unreal development outside of work.

"Journey to Nanite"
talk: https://www.youtube.com/watch?v=NRnj_lnpORU
slides: https://highperformancegraphics.org/slides22/Journey_to_Nanite.pdf

This tool I made to debug my occlusion culling system is pretty neat.

an idea: if a given voxel hasn't moved or otherwise changed shape since the prior frame, the culling test could be made stricter to eliminate false negatives for empty voxels in front of the actual rendered surface 🤔

Also I pushed a new build to itch w/ the WIP occlusion culling system active https://aeva.itch.io/tangerine

Yes! Haha! Yes! I fixed Tangerine's occlusion culling tonight. While this isn't the silver bullet I was hoping it would be, it does substantially improve the draw time of my worst models. The most extreme case brings one of my interpreted models down from ~83 ms to ~30ms.

The fix itself isn't that interesting, but I wrote up my perf analysis and ideas for further improvements in the commit message, should that be interesting to anyone:
https://github.com/Aeva/tangerine/commit/21921dec1a023cd5a9cb8bd44451372e7aad4f63

Huh. If I try to calculate the surface gradient w/ the common central diff or tetrahedron methods, I get a NaN gradient for a sphere radius=1 at point (sqrt(.5), 0, sqrt(.5)) 🙃

If I wanted to get started with "VR development" what should I search for? Is "OpenXR" the thing? Do I need some proprietary SDK?

a lot of game engines are going through a rough time right now, make sure to check in with yours to see if it's doing ok