fix(water caustics): x4000 warnings

[davo0411]

Summary by CodeRabbit

• Refactor
  • Improved internal structure of water caustics shader code for readability and maintainability; no visual or behavioral changes to water rendering.

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 6e80f50 and 0376aea.

📒 Files selected for processing (1)

• features/Water Effects/Shaders/WaterEffects/WaterCaustics.hlsli

✅ Files skipped from review due to trivial changes (1)

• features/Water Effects/Shaders/WaterEffects/WaterCaustics.hlsli

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📝 Walkthrough

Walkthrough

This PR refactors the control flow structure in the ComputeCaustics function within the water caustics shader, converting default-initialized variables with single-line conditional assignments into explicit if/else blocks with braces. The shader logic and computed values remain identical.

Changes

Water Caustics Control Flow Refactoring

Layer / File(s)	Summary
ComputeCaustics if/else structure clarification features/Water Effects/Shaders/WaterEffects/WaterCaustics.hlsli	causticsHigh and causticsLow initialization refactored from single-line if statements to explicit braced if blocks (if (causticsFade > 0.0) and if (causticsFade < 1.0)), preserving sampling, min, multiply, and final lerp(..., causticsFade) behavior.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~5 minutes

Possibly related PRs

• community-shaders/skyrim-community-shaders#2488: Similar refactor in ComputeCaustics changing how causticsHigh/causticsLow are conditionally assigned before the final lerp.
• community-shaders/skyrim-community-shaders#2279: Related edits to ComputeCaustics addressing conditional assignment of caustics variables.

Suggested reviewers

• SkrubbySkrubInAShrub

Poem

🐇
I hop through shader light and shade,
Bracing ifs so no code's afraid,
Caustics keep their gleam and flow,
Same bright waves — just clearer show.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: refactoring control-flow statements in WaterCaustics.hlsli to fix compiler warnings.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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