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Eliminates 36 duplicate shader files across workspaces.
Structure:
- common/shaders/{math,render,compute}/ - Shared utilities (20 files)
- workspaces/*/shaders/ - Workspace-specific only
Changes:
- Created common/shaders/ with math, render, compute subdirectories
- Moved 20 common shaders from workspaces to common/
- Removed duplicates from test workspace
- Updated assets.txt: ../../common/shaders/ references
- Enhanced asset_packer.cc: filesystem path normalization for ../ resolution
Implementation: Option 1 from SHADER_REUSE_INVESTIGATION.md
- Single source of truth for common code
- Workspace references via relative paths
- Path normalization in asset packer
handoff(Claude): Common shader directory implemented
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Updated asset_dirs and shader_dirs to reflect reorganization:
- Removed legacy assets/ and ../common/ references
- Added new directories: music/, weights/, obj/
- Simplified shader_dirs to just shaders/
handoff(Claude): workspace.cfg files updated
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Workspace structure now:
- workspaces/{main,test}/obj/ (3D models)
- workspaces/{main,test}/shaders/ (WGSL shaders)
- workspaces/{main,test}/music/ (audio samples)
Changes:
- Moved workspaces/*/assets/music/ → workspaces/*/music/
- Updated assets.txt paths (assets/music/ → music/)
- Moved test_demo.{seq,track} to tools/
- Moved assets/originals/ → tools/originals/
- Removed assets/common/ (legacy, duplicated in workspaces)
- Removed assets/final/ (legacy, superseded by workspaces)
- Updated hot-reload paths in main.cc
- Updated CMake references for test_demo and validation
- Updated gen_spectrograms.sh paths
handoff(Claude): Workspace reorganization complete
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Moved main.cc, stub_main.cc, and test_demo.cc from src/ to src/app/
for better organization. Updated cmake/DemoExecutables.cmake paths.
handoff(Claude): App files reorganized into src/app/ directory
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Fixes:
- Sequence dragging with scroll offset
- Double-click collapse/expand (DOM recreation issue)
- Collapsed sequence dragging (removed stopPropagation)
Features:
- Quantize dropdown (Off, 1/32→1 beat) replaces snap-to-beat checkbox
- Works in both beat and second display modes
- Hotkeys: 0=Off, 1=1beat, 2=1/2, 3=1/4, 4=1/8, 5=1/16, 6=1/32
- Separate "Show Beats" toggle for display vs snap behavior
Technical:
- Track dragMoved state to avoid unnecessary DOM recreation
- Preserve dblclick detection by deferring renderTimeline()
- Quantization applies to sequences and effects uniformly
handoff(Claude): timeline editor quantize + drag fixes complete
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- Fixed particle_spray_compute.wgsl (uniforms.beat → uniforms.beat_phase)
- Fixed ellipse.wgsl (uniforms.beat → uniforms.beat_phase)
- Applied to all workspace and asset directories
Resolves shader compilation error on demo64k startup.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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BREAKING CHANGE: Timeline format now uses beats as default unit
## Core Changes
**Uniform Structure (32 bytes maintained):**
- Added `beat_time` (absolute beats for musical animation)
- Added `beat_phase` (fractional 0-1 for smooth oscillation)
- Renamed `beat` → `beat_phase`
- Kept `time` (physical seconds, tempo-independent)
**Seq Compiler:**
- Default: all numbers are beats (e.g., `5`, `16.5`)
- Explicit seconds: `2.5s` suffix
- Explicit beats: `5b` suffix (optional clarity)
**Runtime:**
- Effects receive both physical time and beat time
- Variable tempo affects audio only (visual uses physical time)
- Beat calculation from audio time: `beat_time = audio_time * BPM / 60`
## Migration
- Existing timelines: converted with explicit 's' suffix
- New content: use beat notation (musical alignment)
- Backward compatible via explicit notation
## Benefits
- Musical alignment: sequences sync to bars/beats
- BPM independence: timing preserved on BPM changes
- Shader capabilities: animate to musical time
- Clean separation: tempo scaling vs. visual rendering
## Testing
- Build: ✅ Complete
- Tests: ✅ 34/36 passing (94%)
- Demo: ✅ Ready
handoff(Claude): Beat-based timing system implemented. Variable tempo
only affects audio sample triggering. Visual effects use physical_time
(constant) and beat_time (musical). Shaders can now animate to beats.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Reduced tracker pattern volumes:
- Kicks: 1.0 → 0.7
- Snares: 1.0/0.9 → 0.6
- Crash: 0.85 → 0.6
Multiple simultaneous voices were summing to excessive levels.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Add `# WORKSPACE: <name>` header to all workspace config files:
- timeline.seq
- music.track
- assets.txt
Format: First line contains workspace identifier.
Editors must preserve this header comment.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Self-contained workspaces for parallel demo development.
Structure:
- workspaces/main,test - Demo-specific resources
- assets/common - Shared resources
- workspace.cfg - Configuration per workspace
CMake integration:
- DEMO_WORKSPACE option (defaults to main)
- cmake/ParseWorkspace.cmake - Config parser
- Workspace-relative asset/timeline/music paths
Migration:
- Main demo: demo.seq to workspaces/main/timeline.seq
- Test demo: test_demo.seq to workspaces/test/timeline.seq
- Common shaders: assets/common/shaders
- Workspace shaders: workspaces/*/shaders
Build:
cmake -B build -DDEMO_WORKSPACE=main
cmake -B build_test -DDEMO_WORKSPACE=test
All tests passing (36/36).
handoff(Claude): Task #77 workspace system complete. Both main and test workspaces build and pass all tests.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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