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This milestone implements several key enhancements to the sequencing system
and developer documentation:
## Optional Sequence End Times (New Feature)
- Added support for explicit sequence termination via [time] syntax
- Example: SEQUENCE 0 0 [30.0] forcefully ends all effects at 30 seconds
- Updated seq_compiler.cc to parse optional [time] parameter with brackets
- Added end_time_ field to Sequence class (default -1.0 = no explicit end)
- Modified update_active_list() to check sequence end time and deactivate
all effects when reached
- Fully backward compatible - existing sequences work unchanged
## Comprehensive Effect Documentation (demo.seq)
- Documented all effect constructor parameters (standard: device, queue, format)
- Added runtime parameter documentation (time, beat, intensity, aspect_ratio)
- Created detailed effect catalog with specific behaviors:
* Scene effects: HeptagonEffect, ParticlesEffect, Hybrid3DEffect, FlashCubeEffect
* Post-process effects: GaussianBlurEffect, SolarizeEffect, ChromaAberrationEffect,
ThemeModulationEffect, FadeEffect, FlashEffect
- Added examples section showing common usage patterns
- Documented exact parameter behaviors (e.g., blur pulsates 0.5x-2.5x,
flash triggers at intensity > 0.7, theme cycles every 8 seconds)
## Code Quality & Verification
- Audited all hardcoded 1280x720 dimensions throughout codebase
- Verified all shaders use uniforms.resolution and uniforms.aspect_ratio
- Confirmed Effect::resize() properly updates width_/height_ members
- No issues found - dimension handling is fully dynamic and robust
## Files Changed
- tools/seq_compiler.cc: Parse [end_time], generate set_end_time() calls
- src/gpu/effect.h: Added end_time_, set_end_time(), get_end_time()
- src/gpu/effect.cc: Check sequence end time in update_active_list()
- assets/demo.seq: Comprehensive syntax and effect documentation
- Generated files updated (timeline.cc, assets_data.cc, music_data.cc)
This work establishes a more flexible sequencing system and provides
developers with clear documentation for authoring demo timelines.
handoff(Claude): Optional sequence end times implemented, effect documentation
complete, dimension handling verified. Ready for next phase of development.
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#50)
- Updated ShaderComposer to support recursive #include "snippet_name" with cycle detection.
- Extracted granular WGSL snippets: math/sdf_shapes, math/sdf_utils, render/shadows, render/scene_query, render/lighting_utils.
- Refactored Renderer3D to use #include in shaders, simplifying C++ dependency lists.
- Fixed WGPUShaderSourceWGSL usage on macOS to correctly handle composed shader strings.
- Added comprehensive unit tests for recursive composition in test_shader_composer.
- Verified system stability with test_3d_render and full test suite.
- Marked Task #50 as recurrent for future code hygiene.
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architecture
- Fixed black screen by ensuring clear operations in Pass 2 when Skybox pass is skipped.
- Resolved WebGPU validation errors by synchronizing depth-stencil state.
- Implemented rotating skybox using world-space ray unprojection (inv_view_proj).
- Improved procedural noise generation (multi-octave Value Noise).
- Restored scene integrity by correcting object indexing and removing artifacts.
- Updated documentation (TODO.md, PROJECT_CONTEXT.md).
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- Added ObjectType::SKYBOX for dedicated skybox rendering.
- Created assets/final/shaders/skybox.wgsl for background rendering.
- Implemented a two-pass rendering strategy in Renderer3D::render:
- First pass renders the skybox without depth writes.
- Second pass renders scene objects with depth testing.
- Corrected GlobalUniforms struct in common_uniforms.wgsl and src/3d/renderer.h to include and explicit padding for 112-byte alignment.
- Updated Renderer3D::update_uniforms to set the new and zero-initialize padding.
- Reverted sky sampling logic in renderer_3d.wgsl to for SDF misses, preventing background bleed-through.
- Updated test_3d_render.cc to include a SKYBOX object with Perlin noise.
handoff(Gemini): The skybox is now correctly rendered with Perlin noise as a dedicated background pass. Objects render correctly without transparency to the sky. All necessary C++ and WGSL shader changes are implemented and verified.
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- Updated ProcGenFunc signature to return bool for error reporting.
- Implemented gen_perlin (Fractional Brownian Motion) in procedural/generator.cc.
- Added support for sky texture in Renderer3D and its shader.
- Integrated Perlin noise sky texture in test_3d_render.cc.
- Caught and handled memory/generation errors in AssetManager and TextureManager.
- Assigned reference numbers to all remaining tasks in documentation.
handoff(Gemini): Side-quest complete. ProcGenFunc now returns bool. Perlin noise added and used for sky in 3D test. Windows build remains stable. All tasks numbered.
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Implemented comprehensive unit tests for ShaderComposer and a validation test for production WGSL shader assets. This ensures the shader asset pipeline is robust and that all shaders contain required entry points and snippets. Also improved InitShaderComposer to be more robust during testing.
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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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