UE4 Graphics Profiling: All Categories Guide (Rendering Passes)

This guide discusses all categories in GPU Visualizer: HZB, PrePass, ShadowDepths, LightCompositionTasks_PreLighting etc. Learn about their role, quality settings and optimization.

Chapters:
00:00 Introduction
01:30 What's a pass?
04:00 Light Composition Tasks _PreLighting
06:05 Composition After Lighting
06:52 Compute Light Grid
07:55 Lights - NonShadowed Lights
12:40 Lights - Shadowed Lights
15:00 Filter Translucent Volume
16:49 Shadow Depths
19:03 Shadow Projection
19:42 PrePass DDM_*
21:15 HZB Setup Mips
22:50 Base Pass
28:30 Translucency
29:30 Particle Simulation, Particle Injection
30:26 Post Processing
32:00 Reflection Environment
33:37 Render Velocities
35:02 Screen-Space Reflections

[torgath]

This video is a must to watch for every indie devs, especially solo devs! Thank you!!!!

[DOWFanboy]

Incredibly helpfull thank you so much.

[yonjuunininjin]

Great, whenever I see a crispy looking air conditioner with crispy reflection, I will always think about this tutorial now :D

[jeremythompson]

Thank you for this series, very useful. I learned so much!

[STANDBYEXP]

Learned a lot with this series thank you

[swishersnaaake]

Best videos I've seen on this tool, thanks.

[semirukiya]

This is great! But it might be also quite outdated because of all the new technology we have today, like Lumen, Nanite, Virtual Shadow Maps, etc. It would be great to have an updated version of this video that covers those topics :D

Cheers!

[AndrewByrnes]

Bible of performance. This channel is amazing.

[HangryBunniesFromMars]

Thank you so so increadibly much for how much detailed effort you put into this.

[karstenmalmquist]

Nice video! Worth mentioning that (at least in the scenes I've tested) baked lights (static) are grouped under NonShadowedLighting even if they cast shadows during the bake.

[samcarey]

Thanks so much. Before I found this video my post process was waking 104 MS to render

[CAIU]

Incredibly usefull, thanks a lo. Great video!

[MountainKing]

Thank you very much for sharing this! I always miss stuff like this from Epic themselves. Digging up all this information can be really painfull, so thank you again for doing it!

[infusestudio]

Your video has been a lifesaver for us.

[holysoarz]

Great tutorial!Very very helpful!Thank you!

[MrChisnok]

Amazing !
Thank you very much, I've learned alot.

[gabrielepardi]

Thanks.
What else Can I say? Enlightining…
Thanks again

[khiemsola]

Wanted to ask what the cost for Visibility Command pass is, it is currently the highest pass in most of the levels I'm working with. Would be great if anyone could share this knowledge. Thanks

[KRNVOR]

Great Series - Thank You
Just wanted to add a link or topic for a further video, something like an "Optimization Overview"
When I saw these docs, I immediately thought of you, and in the same spirit you express, wanted to share them.
Really appreciate your efforts!

LOL my bad - I had watched these a while back and discovered the intel stuff recently before I saw you made the new one on Intel - Looks like you are a few steps ahead of me.

[guillermofleitaspulido]

Hi! Is there any video where you explain what is a buffer in unreal engine? Btw I like your channel a lot :D