Shader Math Optimizations

[ford442]

Optimized ALU instructions in post processing and background shaders by replacing expensive math calls.

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PR created automatically by Jules for task 16054400534280835509 started by @ford442

Summary by CodeRabbit

• Performance
  • Optimized WebGPU visual effects by streamlining distance and radius calculations across post-processing shaders.
  • Updated aurora, CRT, black-hole, kaleidoscope, shockwave, and neon-burst effects while preserving their existing visual behavior.

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Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 52a5b40a-4040-4ba4-b1e6-1cd02384e088

📥 Commits

Reviewing files that changed from the base of the PR and between 0f59890 and d5c3e57.

📒 Files selected for processing (6)

• replace_length.py
• replace_pow.py
• src/webgpu/shaders/auroraBackground.ts
• src/webgpu/shaders/enhancedPostProcess.ts
• src/webgpu/shaders/materialAwarePostProcess.ts
• src/webgpu/shaders/postProcess.ts

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📝 Walkthrough

Walkthrough

The change adds scripts and updates WebGPU shaders to replace selected length(...) and pow(..., 0.4) expressions with square-root calculations.

Changes

Shader math updates

Layer / File(s)	Summary
Replacement scripts replace_length.py, replace_pow.py	The scripts update three shader files with the targeted expression substitutions.
Aurora shader calculations src/webgpu/shaders/auroraBackground.ts	The shader updates horizontal fade and vignette distance calculations.
Post-process shader calculations src/webgpu/shaders/enhancedPostProcess.ts, src/webgpu/shaders/materialAwarePostProcess.ts, src/webgpu/shaders/postProcess.ts	The shaders replace selected distance calculations and update black-hole radius decay to use square-root time decay.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• ford442/Tetris_WebGPU#300: Replaces shader length(...) calculations with dot-product-based expressions in other shader files.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch jules/shader-optimizations-16054400534280835509

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