hello world · I'm Sagar, aka rgbguy

I build graphics from scratch. Then I show you how it works.

Nine years as a graphics engineer at Qualcomm, ShareChat and Metadome. Now I build my own engines, turn equations into art, and teach it all to a 410K+ community.

Watch the videos Work with me
Why rgbguy exists4 min
410K+community across platforms
10M+views on YouTube
9 yrsbuilding graphics in industry
2patents filed in AR
// most watched

Watched by millions

All videos →
Bird with maths1.4M views
Snake with maths1.3M views
Stingray with maths1M views
Butterfly with maths1M views
Cheat codes596K views
Animation retargeting591K views
// start here

Pick your path

01

Watch

Short videos on graphics, gamedev and maths.

10M+ views 02

Play

Interactive 3D graphs. Watch the short, then change the maths yourself.

9 playgrounds 03

Read

Deep dives from my build log. Rasterizers, MSAA, texture compression.

8 deep dives 04

Build

Engines, shader demos, tools and open source code.

2 engines · 13 demos
// building now

A game engine, from scratch

FuzX is my C++ game engine. No Unity, no Unreal. I'm building it in public, one episode at a time.

Full series →
EP 1I'm building a game engine from scratch in C++
EP 2How GPUs turn math into pixels
EP 3Scene graph, components, assets
EP 4My C++ game engine runs on Android
// latest writing

From the build log

    All posts →
    // before rgbguy

    Nine years of shipping

    Qualcomm2018 - 2022
    XR research

    Real-time depth compression for cloud VR reprojection. Two patents filed in AR rendering.

    ShareChat2022 - 2023
    Graphics SDK

    Owned Shutter, a cross-platform C++ graphics SDK on OpenGL and Metal behind the camera and video editor.

    Metadome2023 - 2024
    Web graphics

    Rebuilt a WebGL virtual try-on SDK from scratch. 10 FPS became 30+ on low-end phones, 60+ on high-end.

    Full story →
    // work with me

    Got a rendering problem, a class to teach, or an audience to reach?

    I take on graphics and R&D work, teach gamedev and maths, and partner with brands that fit the community.

    Work with me partnerships@rgbguy.in
    // follow along

    Join the 410K+