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This will be a long wall of text, and kinda random! My main points are: C++ compile times are important, Non-optimized build performance is important, Cognitive load is important. I don’t expand much on this here, but if a programming language or a library makes me feel stupid, then I’m less likely to use it or like it. C++ does that a lot :) “Standard Ranges” blog post by Eric Niebler – about C++

Introduction and index of this series is here. As promised in the last post, let’s port our path tracer to C#, both outside & inside of Unity. This will also contain a brief example of Unity 2018.1 “Job System”, as well as Burst compiler. There will be nothing specific to path tracing in this post! Basic C# port Let’s do a standalone (outside of Unity) C# port first. It’s 2018, so I’ll try to pick

Caveat: I know nothing about font rendering! But looking at the internets, it feels like things are getting interesting. I had exactly the same outsider impression watching some discussions unfold between Yann Collet, Fabian Giesen and Charles Bloom a few years ago – and out of that came rANS/tANS/FSE, and Oodle and Zstandard. Things were super exciting in compression world! My guess is that about

At work we formed a small “strike team” for optimizing CPU side of Unity’s rendering. I’ll blog about my part as I go (idea of doing that seems to be generally accepted). I don’t know where that will lead to, but hey that’s part of the fun! Backstory / Parental Warning I’m going to be harsh and say “this code sucks!" in a lot of cases. When trying to improve the code, you obviously want to improve

I shamelessly stole whole idea from Robert Cupisz and did some 3D printed earrings. TL;DR: raymarching, marching cubes, MeshLab. Now for the longer version… Step 1: pick a Quaternion Julia fractal As always, Iñigo Quilez’ work is a definitive resource. There’s a ready-made GLSL shader for raymarching this fractal in ShaderToy (named “Quaternion”), however current state of WebGL doesn’t allow loops

During development of Unity 3.0, I was not-so-pleasantly surprised to see that our cross-compiled shaders run slow on iPhone 3Gs. And by “slow”, I mean SLOW; at the speeds of “stop the presses, we can not ship brand new OpenGL ES 2.0 support with THAT performance”. Back story Take this HLSL pixel shader for particles, that does nothing but multiplies texture with per-vertex color: half4 frag (v2f

Intro Baseline: store X&Y&Z Method 1: X&Y Method 3: Spherical Coordinates Method 4: Spheremap Transform Method 7: Stereographic projection Method 8: Per-pixel View Space Performance Comparison Quality Comparison Changelog Heads up! I wrote this article in year 2009. Since then a lot of things have happened. A decade later, it looks like everyone settled onto something like semi-octahedral normal e

Unity has a problem From the outside, Unity lately seems to have a problem or two. By “lately”, I mean during the last decade, and by “a problem or two”, I mean probably over nine thousand problems. Fun! But what are they, how serious they are, and what can be done about it? Unity is a “little engine that could”, that started out in the year 2004. Almost everything about games and related industri