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Replace redundant CommonUniforms struct definitions across 13 shaders
with #include "common_uniforms" directive. Integrate ShaderComposer
preprocessing into all shader creation pipelines.
Changes:
- Replace 9-line CommonUniforms definitions with single #include line
- Add ShaderComposer.Compose() to create_post_process_pipeline()
- Add ShaderComposer.Compose() to gpu_create_render_pass()
- Add ShaderComposer.Compose() to gpu_create_compute_pass()
- Add InitShaderComposer() calls to test_effect_base and test_demo_effects
- Update test_shader_compilation to compose shaders before validation
Net reduction: 83 lines of duplicate code eliminated
All 35 tests passing (100%)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Fixed critical validation errors caused by WGSL vec3<f32> alignment mismatches.
Root cause:
- WGSL vec3<f32> has 16-byte alignment (not 12 bytes)
- Using vec3 for padding created unpredictable struct layouts
- C++ struct size != WGSL struct size → validation errors
Solution:
- Changed circle_mask_compute.wgsl EffectParams padding
- Replaced _pad: vec3<f32> with three separate f32 fields
- Now both C++ and WGSL calculate 16 bytes consistently
Results:
- demo64k: 0 WebGPU validation errors
- Test suite: 32/33 passing (97%)
- All shader compilation tests passing
Files modified:
- assets/final/shaders/circle_mask_compute.wgsl
- TODO.md (updated task status)
- PROJECT_CONTEXT.md (updated test results)
- HANDOFF_2026-02-09_UniformAlignment.md (technical writeup)
Note: DemoEffectsTest failure is unrelated (wgpu_native library bug)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Define CommonUniforms struct with standard fields:
- resolution: vec2<f32>
- aspect_ratio: f32
- time: f32
- beat: f32
- audio_intensity: f32
Updated 14 shaders to use CommonUniforms:
- Replaced width/height with resolution
- Unified intensity/audio_peak → audio_intensity
- Moved effect-specific params to EffectParams struct
- visual_debug.wgsl now uses GlobalUniforms.view_proj
All shaders now have consistent uniform interface.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Extracted all hardcoded WGSL shaders into external assets. Updated AssetManager to handle shader snippets. Refactored Renderer3D, VisualDebug, and Effects to load shaders via the AssetManager, enabling better shader management and composition.
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