Homam Bahnassi

Veteran #GameDev, Principal Dev Tech @NVidia, co-creator of #HyperVoidGame, in Engineering

[Homam Bahnassi @homambahnassi]

Interested in AI in Unreal Engine?
This quick tutorial walks through a new plugin that leverages TensorRT to efficiently render neural post-processing in UE5.

[NVIDIA Game Dev @NVIDIAGameDev]

We’re accelerating Unreal Engine’s Neural Network Engine (NNE).

NNE is a common API that allows for seamless integration of neural network features in @UnrealEngine 5. Now, developers can utilize a new plugin that adds TensorRT for RTX as a runtime option, resulting in higher throughput on NVIDIA RTX GPUs.

Read the tech blog for more details and a sample project 👉 https://t.co/FQ4QYu6vek

[Homam Bahnassi @homambahnassi]

Oldie but goldie🏆

[Homam Bahnassi @homambahnassi]

@EyeOfScar Not sure but glad it is still working. Could be relate to the type of license. Mine were perpetual, not subscriptions

[Homam Bahnassi @homambahnassi]

Prototype of raytraced decals with height blending. Not #UE5 yet :)

[Homam Bahnassi @homambahnassi]

@EyeOfScar Yes, it is in the nvrtx 5.4. Not sure about the caustics branch, I think it should be integrated as well. to confirm check this cvar: r.SampledLighting.Lumen.Reflections.EnableDecals

[Homam Bahnassi @homambahnassi]

Raytraced decals in the NVRTX branch of #UE5

[NVIDIA Game Dev @NVIDIAGameDev]

Introducing the new era of rendering, powered by GeForce RTX 50 Series and AI ✨

‘Zorah’ is our new groundbreaking RTX neural rendering tech demo that highlights the latest innovations in shader, geometry, lighting and character technologies.

#CES2025

[Homam Bahnassi @homambahnassi]

@EyeOfScar Yes it is supported in NVRTX-5.3. To enable it…
- Enable the sky sampling cvar: 'https://t.co/YqI1CoiECC'
- If using the HDRIBackdrop plugin, enable the 'Is Sky' in the 'HDRI_Projection_Sky' material.

[Homam Bahnassi @homambahnassi]

Real-Time Image Based Lighting in the NVRTX branch of #UE5.
This scene is lit with HDRI only, no light actors. Still, the Restir algorithm is able to render dynamic and accurate shadows from the sun pixels in the image☀️

[Homam Bahnassi @homambahnassi]

@chena_cpp We did performance analysis on the ReStir implementation in UE5. Some results are presented in this GDC2024 talk:
https://t.co/KGL6DSgDdH
Performance discussion starts around 19:30

[Homam Bahnassi @homambahnassi]

The tool is based on a plugin architecture for implementing auditing checks. Users can expand it by implementing more validation plugins and support additional asset types.
Check the readme for a high-level explanation about extending the tool.
https://t.co/uygAUEd1k7

[Homam Bahnassi @homambahnassi]

The latest NVRTX-5.4 branch includes a new bonus plugin: 'Asset Tech Auditor'.
In this thread, I will highlight few features…

P.S. The plugin is completely implemented using #UE5 editor utility widgets ;)

[Homam Bahnassi @homambahnassi]

After running the tool to analyze assets, detected issues can be automatically fixed by the tool💪
Few exceptions require manual fix in DCC. Hovering the mouse over these checks provides helpful metrics for fixing the asset.

[Evan Hart @PixelCurmudgeon]

NvRTX-5.4 non-preview finally released. Some good cvar/control refactoring (much stuff now available in PPV). Good ReSTIR GI improvements.

[Homam Bahnassi @homambahnassi]

Ported one of my old MentalRay shaders to ShaderToy.
The shader is for making textures tileable in run-time using one texture sampler
https://t.co/7bppfpvkki

[Homam Bahnassi @homambahnassi]

The #UE5 raytracing guide is now included in the latest NvRTX 5.4 (Preview) branch: https://t.co/ZyQLubaAX3

[Homam Bahnassi @homambahnassi]

Check out the newly released raytracing guide for #UE5
https://t.co/R87C1LwUvQ

It features visual breakdown of #raytracing in UE 5.4, graphics debugging, perf profiling and some tips & tricks for content creators ;)

[Evan Hart @PixelCurmudgeon]

After a delay, we've finally released an nvrtx-5.4 branch for those that want to play with ReSTIR DI & GI in UE5.4.
This is just a preview at this point as we're working on some refactoring.
https://t.co/R0Gf1J1wRB

[Homam Bahnassi @homambahnassi]

@phannDOTde I think this is due to signing in with a GIT account that is not linked to Epic. This link helps explaining how to access UE branches on GIT:
https://t.co/UvQ8xJQWQM

[Homam Bahnassi @homambahnassi]

The latest update to the NVRTX 5.3 branch introduces partial colored transmittance
https://t.co/ShsHBbCLBX
I think many #UE5 devs -including myself- will appreciate getting accurate and dynamic colored translucent shadows in real-time without light baking :)

[Homam Bahnassi @homambahnassi]

Check out the newly released raytracing guide for #UE5
https://t.co/R87C1LwUvQ

It features visual breakdown of #raytracing in UE 5.4, graphics debugging, perf profiling and some tips & tricks for content creators ;)