Walkthrough

A shader optimization modifies how texture projection coordinates are transformed in the non-skinned PROJECTED_UV rendering path. Instead of directly using projection coordinates, the code now constructs a world-space 3x3 matrix from world axes and multiplies it with the projection vector, altering the orientation transformation.

Changes

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Single file modified with focused mathematical transformation
• Requires understanding of world-space vs. texture-space coordinate systems and their impact on rendering
• Consider verifying the matrix construction logic and confirming this produces the intended visual/performance results

Possibly related PRs

• feat: always use worldspace lighting #1266: Moves projection/lighting math to world space in runtime code, complementing this shader-side world-space transformation

Suggested reviewers

• doodlum
• jiayev
• Pentalimbed

Poem

🐰 A matrix dance in shader's light,
World-space axes spinning bright!
Projections twist from old to new,
Transforming coordinates through and through. ✨

Pre-merge checks and finishing touches

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Using provided base ref: 520945a
Using base ref: 520945a
Base commit date: 2025-12-03T01:43:28-08:00 (Wednesday, December 03, 2025 01:43 AM)
No actionable suggestions for changed features.

✅ A pre-release build is available for this PR:
Download

Please confirm testing results.

Please confirm testing results.

I have now confirmed both brendan and mirirs issue is fixed. See the testing thread to replicate the issue, it is fairly simple, the castle you just download and add the modified esp, then go south and check that there is no snow on the walls. For anyone reviewing this see the discord testing release thread.