GroundZero

C++ dev with Vulkan dependencies.
UE5 alchemist.
Fueled by shaders, bugs & bad puns.

[Ari Arnbjörnsson @flassari]

That's how you get zero stutters in your game. You're welcome, game industry. #uetips

[GroundZero @GroundZerror]

Using UE5's defaults? TSR, Lumen, and VSMs might be costing you more than you think.

These features aren't just "free upgrades" they're performance tradeoffs that assume high-end hardware.

Great breakdown on what's actually happening under the hood:

https://t.co/Ymcoywldhb

[GroundZero @GroundZerror]

TSR costing 3.3ms in a basic UE5 scene made me rethink AA entirely.

But for stylized / non-Nanite projects?
They can hurt clarity & performance.

Wrote a deep dive 👇
https://t.co/8scYvvJnRB

[GroundZero @GroundZerror]

RDG isn’t “just a graph.”

I built a custom RDG compute pass in Unreal Engine, broke SceneColor, got black frames, and finally understood why RDG exists.

Shader parameters, lifetimes, debugging & fixes:
https://t.co/u89TW18nJU

#UnrealEngine #GameDev #Rendering

[GroundZero @GroundZerror]

Visualizing performance stats builds intuition faster than staring at numbers. I experimented with building lightweight profiling & visualization tools in Unreal using ImGui.

Full write-up: https://t.co/QZM9igVBBk

#UnrealEngine #GameDev #TechArt #EngineTools #ImGui

[GroundZero @GroundZerror]

Between vertex factories, static params, and Unreal’s compilation model,
shader permutations become invisible technical debt.
I did a deep dive into how Unreal actually generates shader permutations — and why the cost stays hidden.

[GroundZero @GroundZerror]

Shader permutations in Unreal stay invisible
until compile times explode.
Static switches look clean
but silently multiply shaders.

Deep dive on how Unreal actually generates them 👇
👉 https://t.co/wFqTHNfHK3

[GroundZero @GroundZerror]

A few questions worth asking:
• How many permutations does your “simple” master material generate?
• Are static switches necessary — or just convenient?
• How many permutations come from usage flags you enabled once and forgot?

[GroundZero @GroundZerror]

@GhislainGir Yea it's the global mesh distance fields. But I'm also exploring this right now so I'm not sure if that's the correct info I have at the moment. Pretty sure I'll get a better grasp out of the video 🔥.

[BORED @BoredElonMusk]

Opportunity cost is real.

[Ari Arnbjörnsson @flassari]

Profile.

[GroundZero @GroundZerror]

@TheVisionGame Would love to read the deep dive on the same, optimization techniques never stop surprising me.

[GroundZero @GroundZerror]

Ran the FAB Warehouse Environment on a modest RTX 3050 laptop at first, 18 FPS. Brutal.

After profiling & cleanup: 44 FPS.

Here’s what worked: https://t.co/FZ6zZqTys1

[GroundZero @GroundZerror]

Global Illumination isn’t just about light quality — it’s about how much GPU you can spend to keep it dynamic.

Read more about Lumen Deep Dive right here 👇
https://t.co/8zFCFoA9nX

[GroundZero @GroundZerror]

Nanite performance isn’t just about triangles , it’s about how clusters stream and how you manage budgets.

Push too many high-cost clusters, and streaming becomes the real bottleneck.

https://t.co/stonCfXXIH

[GroundZero @GroundZerror]

LOD chains are dead.
But your job as an asset author didn’t vanish — it shifted.
Here’s how to build Nanite-ready assets that actually scale 👇
https://t.co/k2CxnfSPyk

#GameDev #UnrealEngine #Nanite #TechArt #GameOptimization

[GroundZero @GroundZerror]

Nanite loves triangles. It hates your materials.

Here’s why performance tanks (and how to fix it):
https://t.co/IlwQgPPm7o

#GameDev #UnrealEngine #Nanite #TechArt #GameOptimization

[GroundZero @GroundZerror]

Nanite isn’t magic , but it’s one of the smartest geometry systems in game dev. 🎮

My first deep dive covers what it is, how it works, & why it matters.

What's Next ? A Full Nanite Optimization Guide.

🔗 https://t.co/CkAVJEqTLN

#GameDev #UnrealEngine #Nanite #TechArt