demo.git/workspaces/test/shaders, branch main

test: enhance GaussianBlur parameters and test timeline

2026-02-16T21:57:20Z

- Fix shader struct to match C++ (add strength_audio, stretch) - Increase default blur strength to 8.0 for visibility - Add blur effect to test sequence for validation Co-Authored-By: Claude Sonnet 4.5

feat: Add FlashEffect for audio/visual sync testing

2026-02-16T15:16:13Z

- FlashEffect: Beat-synchronized white flash using ShaderComposer - Loads shader from assets (flash.wgsl) with sequence_uniforms include - Uses pow(1.0 - beat_phase, 4.0) for sharp flash at beat start - Updated test_demo.seq to use FlashEffect (was HeptagonEffect) - Added FlashEffect to test suite (test_demo_effects.cc) - Made cnn_test conditional on main workspace (fixes build error) - Flash intensity: 1.0 at beat start, fades to 0.0 by beat end Co-Authored-By: Claude Sonnet 4.5

refactor(wgsl): consolidate SDF shapes into single common file

2026-02-14T14:26:55Z

Merge sdf_primitives.wgsl into math/sdf_shapes.wgsl to eliminate duplication and establish single source of truth for all SDF functions. Changes: - Delete common/shaders/sdf_primitives.wgsl (duplicate of math/sdf_shapes.wgsl) - Add sdBox2D() and sdEllipse() to math/sdf_shapes.wgsl - Update ellipse.wgsl (main/test) to use #include "math/sdf_shapes" - Update scene1.wgsl to use math/sdf_shapes instead of sdf_primitives - Rename asset SHADER_SDF_PRIMITIVES → SHADER_SDF_SHAPES - Update shader registration and tests Impact: - ~60 lines eliminated from ellipse shaders - Single source for 3D primitives (sphere, box, torus, plane) and 2D (box, ellipse) - Consistent include path across codebase All tests passing (34/34). handoff(Claude): SDF shapes consolidated to math/sdf_shapes.wgsl Co-Authored-By: Claude Sonnet 4.5

refactor(wgsl): replace inline fullscreen_vs with common include

2026-02-14T14:23:14Z

Replace duplicate fullscreen triangle vertex shader code with #include "render/fullscreen_vs" in 8 workspace shaders. Eliminates ~60 lines of duplication and establishes single source of truth. Modified shaders: - circle_mask_compute.wgsl (main/test) - circle_mask_render.wgsl (main/test) - ellipse.wgsl (main/test) - gaussian_blur.wgsl (main/test) Updated test_shader_assets.cc to validate include directive instead of inline @vertex keyword for affected shaders. All tests passing (34/34). handoff(Claude): Shader modularization - fullscreen_vs consolidated Co-Authored-By: Claude Sonnet 4.5

refactor(wgsl): modularize common shader functions

2026-02-14T14:13:09Z

Extracted common WGSL functions into separate files in `common/shaders/` to improve reusability and maintainability. - Created `common/shaders/render/fullscreen_vs.wgsl` for a reusable fullscreen vertex shader. - Created `common/shaders/math/color.wgsl` for color conversion and tone mapping functions. - Created `common/shaders/math/utils.wgsl` for general math utilities. - Created `common/shaders/render/raymarching.wgsl` for SDF raymarching logic. - Updated multiple shaders to use these new common snippets via `#include`. - Fixed the shader asset validation test to correctly handle shaders that include the common vertex shader. This refactoring makes the shader code more modular and easier to manage.

Remediation: Implement shared common/shaders/ directory

2026-02-13T07:34:24Z

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

fix: update shader files to use beat_phase instead of beat

2026-02-11T23:33:58Z

- 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

feat: implement beat-based timing system

2026-02-11T23:30:56Z

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

feat: Implement workspace system (Task #77)

2026-02-09T17:51:54Z

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