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feat: support for software CLUTs for gamma correction - #7816

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mdcutone wants to merge 11 commits into
psychopy:devfrom
mdcutone:dev-fix-gamma-and-target-tests
Draft

mdcutone wants to merge 11 commits into
psychopy:devfrom
mdcutone:dev-fix-gamma-and-target-tests

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Some display compositors do not support hardware CLUTs anymore. This PR adds support for software gamma correction at the shader level which is applied per window

This is a WIP, I need some time to find any pitfalls

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codecov Bot commented Sep 30, 2026 •

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Codecov Report

❌ Patch coverage is 50.93168% with 79 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.96%. Comparing base (5d75573) to head (168f4c7).
⚠️ Report is 7 commits behind head on dev.

Additional details and impacted files
@@            Coverage Diff             @@
##              dev    #7816      +/-   ##
==========================================
- Coverage   51.42%   50.96%   -0.47%     
==========================================
  Files         290      292       +2     
  Lines       50060    51080    +1020     
==========================================
+ Hits        25742    26031     +289     
- Misses      24318    25049     +731     
Components Coverage Δ
app ∅ <ø> (∅)
boilerplate ∅ <ø> (∅)
library ∅ <ø> (∅)
vm-safe library ∅ <ø> (∅)
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