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Vladimir Komarov

@vrkomarov.bsky.social

Graphics programmer at Lesta Games (prev Wargaming St. Petersburg) Here I post about computer graphics and my engine/renderer mastodon.gamedev.place/@VrKomarov https://x.com/VrKomarov

66 Posts419 Follower98 Folgt
Alex Tardif@longbool.bsky.social · last mo.

If you've been watching recent engine-related news from the industry and are feeling disenchanted with that trajectory, I'd like to share some non-mainstream projects that might brighten your day:

Mike Turitzin@miketuritzin.bsky.social · 7mo ago

I just released my video about the engine (and game) I've been working on. The engine is based on dynamic SDFs, and the video describes how it works and what it makes possible. Link in the reply! This is my first YouTube video and it took forever - please repost!

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Morten Vassvik@vassvik.bsky.social · 8mo ago

Ever seen one of these, and wondered *why* they work? 🧵 This is a so-called Bitonic sorting network, and the illustrations show the two common ways to implement them. From an implementation point of view the two methods are effectively the same, so which one you pick just comes down to preference.

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Jacco Bikker 🎦@jbikker.bsky.social · 8mo ago

Another SIGGRAPH Asia gem: research.nvidia.com/labs/rtr/pub... "Sample Space Partitioning and Spatiotemporal Resampling for Specular Manifold Sampling" by Hong et al., which combines sample space partitioning with ReSTIR to efficiently handle caustics.

Sample Space Partitioning and Spatiotemporal Resampling for Specular Manifold Sampling | NVIDIA Real-Time Graphics Research

Caustics rendering remains a long-standing challenge in Monte Carlo rendering because high-energy specular paths occupy only a small region of path space, making them difficult to sample effectively. ...

research.nvidia.com

Kostas Anagnostou@kostasanagnostou.bsky.social · 8mo ago

The z-buffer and depth testing (aka z-testing) have been the dominant way of hidden surface elimination for over 50 years, introduced but not implemented in W. Straßer's PhD thesis in 1974, and actually implemented in Ed Catmull's PhD thesis in the same year. 1/4

Vladimir Komarov@vrkomarov.bsky.social · 9mo ago

I had previously used triangle meshes to render giant planetary atmospheres but after many unsuccessful attempts to fix all the artifacts, especially when intersecting atmosphere geometry, I decided to add support for spheres to my renderer. It works much better

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Vladimir Komarov@vrkomarov.bsky.social · last yr.

Because of texture streamer it became necessary to almost always use mip maps, so I had to do basic normal map filtering, otherwise the surfaces become too shiny and flat. Only roughness without anisotropy for now. Images in order: mips disabled/enabled/+filtering. More below...

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Vladimir Komarov@vrkomarov.bsky.social · last yr.

I'm working on texture streaming right now, and the first thing I tried was hardware tile streaming with sampler feedback. And yes, the state of hardware streaming is very sad. bsky.app/profile/fabr...

@fabricen.bsky.social · last yr.

Hardware virtual textures look like a marvelous tool for large terrains or volume compression. Alas, they are in a sad state in terms of performance and usability. And strangely, the (very bad) binding perfs varies a lot with the driver. → read here: hal.science/hal-05138369 @rcmz0.bsky.social