obsproject / obsproject/obs-studio

Sometimes incorrect rendering of source colorspace. (Compositing/transform issue?)

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Dominant language
C
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Description

Operating System Info

Other

Other OS

NixOS 26.05.20260507.68a8af9

OBS Studio Version

32.1.2

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/eChzgWSRB9ah7BI5

OBS Studio Crash Log URL

No response

Expected Behavior

Correct colorspace rendering in all views.

Current Behavior

Program is correct, Preview is not:

Image

multiview doesn't render correctly when scene is not selected:

Image

But does when selected:

Image

filter preview looks fine:

Image
Steps to Reproduce
  1. Capture OpenGL game with vkgamecapture
  2. Set source transform to Bilinear/Bicubic/Lanczos.

Others are reporting it's due to transform code as well, with croping or other things.

https://github.com/nowrep/obs-vkcapture/issues/285#issuecomment-4187810705

All other settings are default

Image
Anything else we should know?

No response

Contributor guide

Open the contributing guide

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

Start by reproducing the issue with an OpenGL game captured by vkgamecapture and the Bilinear, Bicubic, and Lanczos source transforms. Compare Preview, Program, multiview, and filter preview rendering, using the attached OBS log and the linked vkgamecapture discussion; done means colorspace rendering is consistent across all views.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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