| Age | Commit message (Collapse) | Author |
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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.
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This refactoring improves the project's structure by decoupling visual effects from the core GPU module. All effect implementations have been moved from to a new top-level directory. Shared utilities like , , and have been consolidated into the parent directory.
- **Motivation**: To create a clearer separation of concerns, making the codebase easier to navigate and maintain. This move treats effects as a distinct layer that depends on the core GPU module, rather than being embedded within it.
- **Changes**:
- Created new directory.
- Moved all effect source files (, ) to .
- Moved shared helpers (, , ) to .
- Updated and to reflect the new file locations for all build targets.
- Corrected all directives across the entire codebase (, , ) to point to the new paths.
- Updated all markdown documentation ( files) to ensure file paths and architectural descriptions are accurate.
- Fixed several compiler errors related to incorrect enum casting () that were exposed during cross-compilation for Windows.
- **Verification**:
- The entire project builds successfully for both native and Windows cross-compilation targets.
- All 34 tests pass (Usage
ctest [options]).
- The --- Running Native Build & Tests ---
Configuring with all options enabled (tests + tools)...
--
-- Build Configuration:
-- DEMO_SIZE_OPT: ON
-- DEMO_STRIP_ALL: ON
-- DEMO_FINAL_STRIP: OFF
-- DEMO_STRIP_EXTERNAL_LIBS: OFF
-- DEMO_BUILD_TESTS: ON
-- DEMO_BUILD_TOOLS: ON
-- DEMO_ENABLE_COVERAGE: OFF
-- DEMO_ENABLE_DEBUG_LOGS: OFF
-- DEMO_HEADLESS: OFF
-- DEMO_WORKSPACE: main
--
-- Loaded workspace: Main Demo
-- Timeline: timeline.seq
-- Music: pop_punk_drums.track
-- Assets: assets.txt
-- Using workspace: main
-- Configuring done (0.0s)
-- Generating done (0.1s)
-- Build files have been written to: /Users/skal/demo/build
Building all targets (demo, tests, and tools)...
[ 0%] Built target validate_uniforms_script
[ 1%] Built target procedural
[ 2%] Validating uniform buffer sizes and alignments...
[ 3%] Built target tracker_compiler
[ 4%] Built target test_3d
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[ 4%] Built target seq_compiler
[ 4%] Built target tracker_compiler_host
[ 5%] Built target asset_packer
[ 5%] Built target test_procedural
[ 6%] Compiling demo sequence from workspace main...
[ 6%] Built target generate_tracker_music
[ 6%] Built target generate_test_demo_music
[ 6%] Compiling test_demo sequence...
Using BPM: 90
Successfully generated timeline with 16 sequences.
Using BPM: 120
Demo end time: 16.000000s
Successfully generated timeline with 1 sequences.
[ 6%] Built target generate_test_demo_timeline
[ 6%] Built target generate_timeline
Validation Warning for 'CommonPostProcessUniforms': Matching WGSL struct not found.
Validation OK for 'FadeParams': Size 16 matches C++ expected size.
Validation OK for 'ThemeModulationParams': Size 16 matches C++ expected size.
Validation OK for 'GaussianBlurParams': Size 8 matches C++ expected size.
Validation OK for 'DistortParams': Size 8 matches C++ expected size.
Validation OK for 'CircleMaskParams': Size 16 matches C++ expected size.
[ 6%] Built target generate_test_assets
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[ 57%] Building CXX object CMakeFiles/gpu.dir/src/effects/vignette_effect.cc.o
[ 57%] Building CXX object CMakeFiles/gpu.dir/src/gpu/post_process_helper.cc.o
[ 57%] Linking CXX static library libgpu.a
[ 60%] Built target gpu
[ 60%] Linking CXX executable test_uniform_helper
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[ 60%] Building CXX object CMakeFiles/test_sequence.dir/src/tests/assets/test_sequence.cc.o
[ 61%] Linking CXX executable test_noise_functions
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[ 62%] Building CXX object CMakeFiles/test_demo.dir/src/app/test_demo.cc.o
[ 62%] Building CXX object CMakeFiles/demo64k.dir/src/app/main.cc.o
[ 62%] Building CXX object CMakeFiles/test_3d_render.dir/src/generated/timeline.cc.o
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[ 67%] Building CXX object CMakeFiles/test_mesh.dir/src/generated/timeline.cc.o
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[ 72%] Building CXX object CMakeFiles/test_demo_effects.dir/src/generated/timeline.cc.o
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[ 96%] Built target test_effect_base
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[100%] Built target test_demo_effects
Running test suite...
Test project /Users/skal/demo/build
Start 1: HammingWindowTest
1/34 Test #1: HammingWindowTest ................ Passed 0.00 sec
Start 2: MathUtilsTest
2/34 Test #2: MathUtilsTest .................... Passed 0.00 sec
Start 3: FileWatcherTest
3/34 Test #3: FileWatcherTest .................. Passed 0.00 sec
Start 4: SynthEngineTest
4/34 Test #4: SynthEngineTest .................. Passed 0.00 sec
Start 5: DctTest
5/34 Test #5: DctTest .......................... Passed 0.00 sec
Start 6: FftTest
6/34 Test #6: FftTest .......................... Passed 0.01 sec
Start 7: SpectralBrushTest
7/34 Test #7: SpectralBrushTest ................ Passed 0.01 sec
Start 8: AudioGenTest
8/34 Test #8: AudioGenTest ..................... Passed 0.00 sec
Start 9: AudioBackendTest
9/34 Test #9: AudioBackendTest ................. Passed 0.00 sec
Start 10: SilentBackendTest
10/34 Test #10: SilentBackendTest ................ Passed 0.00 sec
Start 11: MockAudioBackendTest
11/34 Test #11: MockAudioBackendTest ............. Passed 0.00 sec
Start 12: WavDumpBackendTest
12/34 Test #12: WavDumpBackendTest ............... Passed 0.00 sec
Start 13: JitteredAudioBackendTest
13/34 Test #13: JitteredAudioBackendTest ......... Passed 0.00 sec
Start 14: TrackerTimingTest
14/34 Test #14: TrackerTimingTest ................ Passed 0.00 sec
Start 15: VariableTempoTest
15/34 Test #15: VariableTempoTest ................ Passed 0.00 sec
Start 16: TrackerSystemTest
16/34 Test #16: TrackerSystemTest ................ Passed 0.01 sec
Start 17: AudioEngineTest
17/34 Test #17: AudioEngineTest .................. Passed 0.00 sec
Start 18: ShaderAssetValidation
18/34 Test #18: ShaderAssetValidation ............ Passed 0.00 sec
Start 19: ShaderCompilationTest
19/34 Test #19: ShaderCompilationTest ............ Passed 0.02 sec
Start 20: NoiseFunctionsTest
20/34 Test #20: NoiseFunctionsTest ............... Passed 0.01 sec
Start 21: UniformHelperTest
21/34 Test #21: UniformHelperTest ................ Passed 0.00 sec
Start 22: AssetManagerTest
22/34 Test #22: AssetManagerTest ................. Passed 0.01 sec
Start 23: SequenceSystemTest
23/34 Test #23: SequenceSystemTest ............... Passed 0.01 sec
Start 24: ProceduralGenTest
24/34 Test #24: ProceduralGenTest ................ Passed 0.01 sec
Start 25: PhysicsTest
25/34 Test #25: PhysicsTest ...................... Passed 0.01 sec
Start 26: ThreeDSystemTest
26/34 Test #26: ThreeDSystemTest ................. Passed 0.00 sec
Start 27: ShaderComposerTest
27/34 Test #27: ShaderComposerTest ............... Passed 0.01 sec
Start 28: SceneLoaderTest
28/34 Test #28: SceneLoaderTest .................. Passed 0.01 sec
Start 29: EffectBaseTest
29/34 Test #29: EffectBaseTest ................... Passed 0.04 sec
Start 30: DemoEffectsTest
30/34 Test #30: DemoEffectsTest .................. Passed 0.03 sec
Start 31: PostProcessHelperTest
31/34 Test #31: PostProcessHelperTest ............ Passed 0.02 sec
Start 32: TextureManagerTest
32/34 Test #32: TextureManagerTest ............... Passed 0.02 sec
Start 33: GpuProceduralTest
33/34 Test #33: GpuProceduralTest ................ Passed 0.18 sec
Start 34: GpuCompositeTest
34/34 Test #34: GpuCompositeTest ................. Passed 0.20 sec
100% tests passed, 0 tests failed out of 34
Label Time Summary:
3d = 0.01 sec*proc (3 tests)
assets = 0.02 sec*proc (2 tests)
audio = 0.07 sec*proc (15 tests)
gpu = 0.54 sec*proc (11 tests)
util = 0.01 sec*proc (3 tests)
Total Test time (real) = 0.67 sec
Verifying tools compile...
[ 9%] Built target procedural
[ 18%] Built target tracker_compiler_host
[ 18%] Built target tracker_compiler
[ 18%] Built target generate_tracker_music
[ 18%] Built target asset_packer
[ 27%] Built target generate_demo_assets
[ 27%] Built target generate_test_assets
[ 36%] Built target util
[ 81%] Built target audio
[100%] Built target test_spectool
--- Running Windows Cross-Compilation Build ---
Building native tools...
--
-- Build Configuration:
-- DEMO_SIZE_OPT: OFF
-- DEMO_STRIP_ALL: OFF
-- DEMO_FINAL_STRIP: OFF
-- DEMO_STRIP_EXTERNAL_LIBS: OFF
-- DEMO_BUILD_TESTS: OFF
-- DEMO_BUILD_TOOLS: OFF
-- DEMO_ENABLE_COVERAGE: OFF
-- DEMO_ENABLE_DEBUG_LOGS: OFF
-- DEMO_HEADLESS: OFF
-- DEMO_WORKSPACE: main
--
-- Loaded workspace: Main Demo
-- Timeline: timeline.seq
-- Music: pop_punk_drums.track
-- Assets: assets.txt
-- Using workspace: main
-- Configuring done (0.0s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/skal/demo/build_native
[ 50%] Built target procedural
[100%] Built target asset_packer
[100%] Built target seq_compiler
[100%] Built target tracker_compiler_host
Cross-compiling for Windows...
--
-- Build Configuration:
-- DEMO_SIZE_OPT: ON
-- DEMO_STRIP_ALL: ON
-- DEMO_FINAL_STRIP: OFF
-- DEMO_STRIP_EXTERNAL_LIBS: OFF
-- DEMO_BUILD_TESTS: OFF
-- DEMO_BUILD_TOOLS: OFF
-- DEMO_ENABLE_COVERAGE: OFF
-- DEMO_ENABLE_DEBUG_LOGS: OFF
-- DEMO_HEADLESS: OFF
-- DEMO_WORKSPACE: main
--
-- Loaded workspace: Main Demo
-- Timeline: timeline.seq
-- Music: pop_punk_drums.track
-- Assets: assets.txt
-- Using workspace: main
-- Configuring done (0.0s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/skal/demo/build_win
[ 2%] Built target validate_uniforms_script
[ 2%] Built target generate_timeline
[ 4%] Built target generate_test_demo_timeline
[ 4%] Built target generate_demo_assets
[ 4%] Built target generate_test_assets
[ 6%] Built target procedural
[ 9%] Built target tracker_compiler_host
[ 10%] Validating uniform buffer sizes and alignments...
[ 11%] Built target generate_tracker_music
[ 13%] Built target generate_test_demo_music
[ 16%] Built target util
[ 28%] Built target 3d
[ 45%] Built target audio
[ 49%] Building CXX object CMakeFiles/gpu.dir/src/effects/heptagon_effect.cc.obj
[ 52%] Building CXX object CMakeFiles/gpu.dir/src/effects/gaussian_blur_effect.cc.obj
[ 54%] Building CXX object CMakeFiles/gpu.dir/src/effects/particles_effect.cc.obj
[ 54%] Building CXX object CMakeFiles/gpu.dir/src/effects/moving_ellipse_effect.cc.obj
[ 54%] Building CXX object CMakeFiles/gpu.dir/src/gpu/effect.cc.obj
[ 54%] Building CXX object CMakeFiles/gpu.dir/src/effects/passthrough_effect.cc.obj
[ 54%] Building CXX object CMakeFiles/gpu.dir/src/effects/particle_spray_effect.cc.obj
Validation Warning for 'CommonPostProcessUniforms': Matching WGSL struct not found.
Validation OK for 'FadeParams': Size 16 matches C++ expected size.
Validation OK for 'ThemeModulationParams': Size 16 matches C++ expected size.
Validation OK for 'GaussianBlurParams': Size 8 matches C++ expected size.
Validation OK for 'DistortParams': Size 8 matches C++ expected size.
Validation OK for 'CircleMaskParams': Size 16 matches C++ expected size.
[ 54%] Built target validate_uniforms
[ 55%] Building CXX object CMakeFiles/gpu.dir/src/effects/solarize_effect.cc.obj
[ 57%] Building CXX object CMakeFiles/gpu.dir/src/effects/scene1_effect.cc.obj
[ 57%] Building CXX object CMakeFiles/gpu.dir/src/effects/chroma_aberration_effect.cc.obj
[ 58%] Building CXX object CMakeFiles/gpu.dir/src/effects/vignette_effect.cc.obj
[ 59%] Building CXX object CMakeFiles/gpu.dir/src/gpu/post_process_helper.cc.obj
[ 60%] Building CXX object CMakeFiles/gpu.dir/src/gpu/shaders.cc.obj
[ 62%] Linking CXX static library libgpu.a
[ 77%] Built target gpu
[ 79%] Building CXX object CMakeFiles/demo64k.dir/src/app/main.cc.obj
[ 79%] Building CXX object CMakeFiles/test_demo.dir/src/app/test_demo.cc.obj
[ 80%] Building CXX object CMakeFiles/demo64k.dir/src/generated/timeline.cc.obj
[ 81%] Building CXX object CMakeFiles/test_demo.dir/src/generated/test_demo_timeline.cc.obj
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[100%] Built target demo64k
Copying MinGW DLLs...
Crunching build_win/demo64k.exe...
Ultimate Packer for eXecutables
Copyright (C) 1996 - 2026
UPX 5.1.0 Markus Oberhumer, Laszlo Molnar & John Reiser Jan 7th 2026
File size Ratio Format Name
-------------------- ------ ----------- -----------
7036416 -> 4680704 66.52% win64/pe demo64k_packed.exe
Packed 1 file.
------------------------------------------------
Size Report:
-rwxr-xr-x 1 skal 89939 6.7M Feb 14 14:55 build_win/demo64k.exe
-rwxr-xr-x 1 skal 89939 6.7M Feb 14 14:55 build_win/demo64k_stripped.exe
-rwxr-xr-x 1 skal 89939 4.5M Feb 14 14:55 build_win/demo64k_packed.exe
------------------------------------------------
Top 20 Largest Symbols (from unstripped):
------------------------------------------------
Build complete. Output: build_win/demo64k.exe
All checks passed successfully. script completes without errors.
This change streamlines the project's architecture without altering any functionality.
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Adds new helper for common post-process texture pattern (RenderAttachment
| TextureBinding | CopySrc usage). Refactors test_post_process_helper.cc
to use gpu_create_buffer() and gpu_create_post_process_texture(),
eliminating 91 lines of boilerplate.
- New: gpu_create_post_process_texture() in gpu.{h,cc}
- Refactor: test_post_process_helper.cc uses helpers instead of raw WGPU
- Doc: Updated WGPU_HELPERS.md with usage examples
- Verified: All tests passing (test_post_process_helper, test_demo_effects)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Reduces WGPUTextureViewDescriptor boilerplate from 5-7 lines to 1-2.
Helper supports optional mip_levels parameter (defaults to 1).
Updated 17 call sites across gpu/, tests/, and tools/.
Net: -82 lines. All tests passing (34/34).
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Infrastructure for enhanced CNN post-processing with 7D feature input.
Phase 1: Shaders
- Static features compute (RGBD + UV + sin10_x + bias → 8×f16)
- Layer template (convolution skeleton, packing/unpacking)
- 3 mip level support for multi-scale features
Phase 2: C++ Effect
- CNNv2Effect class (multi-pass architecture)
- Texture management (static features, layer buffers)
- Build integration (CMakeLists, assets, tests)
Phase 3: Training Pipeline
- train_cnn_v2.py: PyTorch model with static feature concatenation
- export_cnn_v2_shader.py: f32→f16 quantization, WGSL generation
- Configurable architecture (kernels, channels)
Phase 4: Validation
- validate_cnn_v2.sh: End-to-end pipeline
- Checkpoint → shaders → build → test images
Tests: 36/36 passing
Next: Complete render pipeline implementation (bind groups, multi-pass)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Update pp_update_bind_group extern declaration to match implementation (add effect_params parameter). Refactor tests to share single fixture across all subtests, preventing SamplerCache device mismatch crashes.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Converted ShaderToy shader (Saturday cubism experiment) to Scene1Effect
following EFFECT_WORKFLOW.md automation guidelines.
**Changes:**
- Created Scene1Effect (.h, .cc) as scene effect (not post-process)
- Converted GLSL to WGSL with manual fixes:
- Replaced RESOLUTION/iTime with uniforms.resolution/time
- Fixed const expressions (normalize not allowed in const)
- Converted mainImage() to fs_main() return value
- Manual matrix rotation for scene transformation
- Added shader asset to workspaces/main/assets.txt
- Registered in CMakeLists.txt (both GPU_SOURCES sections)
- Added to demo_effects.h and shaders declarations
- Added to timeline.seq at 22.5s for 10s duration
- Added to test_demo_effects.cc scene_effects list
**Shader features:**
- Raymarching cube and sphere with ground plane
- Reflections and soft shadows
- Sky rendering with sun and horizon glow
- ACES tonemapping and sRGB output
- Time-based rotation animation
**Tests:** All effects tests passing (5/9 scene, 9/9 post-process)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Implements automatic layer chaining and generic framebuffer capture API for
multi-layer neural network effects with proper original input preservation.
Key changes:
- Effect::needs_framebuffer_capture() - generic API for pre-render capture
- MainSequence: auto-capture to "captured_frame" auxiliary texture
- CNNEffect: multi-layer support via layer_index/total_layers params
- seq_compiler: expands "layers=N" to N chained effect instances
- Shader: @binding(4) original_input available to all layers
- Training: generates layer switches and original input binding
- Blend: mix(original, result, blend_amount) uses layer 0 input
Timeline syntax: CNNEffect layers=3 blend=0.7
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Implements multi-layer convolutional neural network shader for stylized
post-processing of 3D rendered scenes:
**Core Components:**
- CNNEffect: C++ effect class with single-layer rendering (expandable to multi-pass)
- Modular WGSL snippets: cnn_activation, cnn_conv3x3/5x5/7x7, cnn_weights_generated
- Placeholder identity-like weights for initial testing (to be replaced by trained weights)
**Architecture:**
- Flexible kernel sizes (3×3, 5×5, 7×7) via separate snippet files
- ShaderComposer integration (#include resolution)
- Residual connections (input + processed output)
- Supports parallel convolutions (design ready, single conv implemented)
**Size Impact:**
- ~3-4 KB shader code (snippets + main shader)
- ~2-4 KB weights (depends on network architecture when trained)
- Total: ~5-8 KB (acceptable for 64k demo)
**Testing:**
- CNNEffect added to test_demo_effects.cc
- 36/36 tests passing (100%)
**Next Steps:**
- Training script (scripts/train_cnn.py) to generate real weights
- Multi-layer rendering with ping-pong textures
- Weight quantization for size optimization
handoff(Claude): CNN effect foundation complete, ready for training integration
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Restructured test suite for better organization and targeted testing:
**Structure:**
- src/tests/audio/ - 15 audio system tests
- src/tests/gpu/ - 12 GPU/shader tests
- src/tests/3d/ - 6 3D rendering tests
- src/tests/assets/ - 2 asset system tests
- src/tests/util/ - 3 utility tests
- src/tests/common/ - 3 shared test helpers
- src/tests/scripts/ - 2 bash test scripts (moved conceptually, not physically)
**CMake changes:**
- Updated add_demo_test macro to accept LABEL parameter
- Applied CTest labels to all 36 tests for subsystem filtering
- Updated all test file paths in CMakeLists.txt
- Fixed common helper paths (webgpu_test_fixture, etc.)
- Added custom targets for subsystem testing:
- run_audio_tests, run_gpu_tests, run_3d_tests
- run_assets_tests, run_util_tests, run_all_tests
**Include path updates:**
- Fixed relative includes in GPU tests to reference ../common/
**Documentation:**
- Updated doc/HOWTO.md with subsystem test commands
- Updated doc/CONTRIBUTING.md with new test organization
- Updated scripts/check_all.sh to reflect new structure
**Verification:**
- All 36 tests passing (100%)
- ctest -L <subsystem> filters work correctly
- make run_<subsystem>_tests targets functional
- scripts/check_all.sh passes
Backward compatible: make test and ctest continue to work unchanged.
handoff(Gemini): Test reorganization complete. 36/36 tests passing.
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