NVIDIAGameWorks / NVIDIAGameWorks/rtx-remix

[Runtime Bug]: Moon shakes in Barnyard, only when DLSS or TAA-U is enabled

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#734 1 comment 0 reactions 0 assignees View on GitHub

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bug runtime triage
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Description

Describe the bug

The moon in Barnyard is rendered through vertex shaders as part of the rotating skybox. When DLSS or TAA-U is enabled, it will shake rapidly.

Nukem on our discord server speculated that the jitter for TAA and DLSS is being incorrectly applied to the moon.

How do you reproduce the bug?

Setup Barnyard with the instructions on moddb, then look in the sky. Toggle DLSS to NIS

What is the expected behavior?

The moon should be still.

Version

dxvk-remix-7524c89-721-debugoptimized | bridge-remix-beca9b3-124-debugoptimized

Logs

No response

Crash dumps

No response

Media

https://github.com/user-attachments/assets/db481434-39ac-424a-93cd-1b12d48aeaf5

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the issue in Barnyard using the ModDB setup, look at the moon in the sky, and toggle DLSS or TAA-U against NIS as described. Start by tracing how vertex-shader skybox rendering receives temporal jitter; done means the moon remains still with DLSS or TAA-U enabled.

Written by the indexing model from the issue text.

Assessment

Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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