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16 hoursstyle: Apply clang-format to codebaseskal
17 hoursrefactor(gpu): Relocate effects to src/effects and streamline includesskal
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 [ 4%] Built target test_maths [ 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 [ 7%] Built target generate_demo_assets [ 7%] Built target validate_uniforms [ 8%] Built target util [ 10%] Built target test_assets [ 11%] Built target test_shader_assets [ 12%] Built target test_file_watcher [ 15%] Built target 3d [ 21%] Built target test_platform [ 22%] Built target audio [ 23%] Built target test_window [ 26%] Built target test_fft [ 27%] Built target test_synth [ 27%] Built target test_spectral_brush [ 27%] Built target test_physics [ 28%] Built target test_dct [ 31%] Building CXX object CMakeFiles/gpu.dir/src/gpu/effect.cc.o [ 30%] Built target test_mock_backend [ 32%] Built target test_scene_loader [ 33%] Built target test_audio_backend [ 34%] Built target test_audio_gen [ 36%] Built target test_silent_backend [ 39%] Built target test_jittered_audio [ 39%] Building CXX object CMakeFiles/gpu.dir/src/effects/heptagon_effect.cc.o [ 42%] Built target test_wav_dump [ 44%] Built target test_tracker_timing [ 44%] Building CXX object CMakeFiles/gpu.dir/src/effects/particles_effect.cc.o [ 45%] Building CXX object CMakeFiles/gpu.dir/src/effects/passthrough_effect.cc.o [ 47%] Built target test_variable_tempo [ 50%] Built target test_audio_engine [ 52%] Built target test_tracker [ 52%] Building CXX object CMakeFiles/gpu.dir/src/effects/moving_ellipse_effect.cc.o [ 52%] Building CXX object CMakeFiles/gpu.dir/src/effects/particle_spray_effect.cc.o [ 52%] Building CXX object CMakeFiles/gpu.dir/src/effects/gaussian_blur_effect.cc.o [ 54%] Built target test_spectool [ 55%] Building CXX object CMakeFiles/gpu.dir/src/effects/solarize_effect.cc.o [ 55%] Building CXX object CMakeFiles/gpu.dir/src/effects/scene1_effect.cc.o [ 55%] Building CXX object CMakeFiles/gpu.dir/src/effects/chroma_aberration_effect.cc.o [ 55%] Building CXX object CMakeFiles/gpu.dir/src/gpu/shaders.cc.o [ 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 [ 60%] Linking CXX executable test_shader_composer [ 60%] Building CXX object CMakeFiles/test_sequence.dir/src/tests/assets/test_sequence.cc.o [ 61%] Linking CXX executable test_noise_functions [ 62%] Linking CXX executable test_shader_compilation [ 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 [ 63%] Built target test_uniform_helper [ 64%] Built target test_shader_composer [ 64%] Building CXX object CMakeFiles/test_3d_physics.dir/src/generated/timeline.cc.o [ 65%] Built target test_noise_functions [ 66%] Built target test_shader_compilation [ 67%] Building CXX object CMakeFiles/test_mesh.dir/src/generated/timeline.cc.o [ 67%] Building CXX object CMakeFiles/test_effect_base.dir/src/tests/gpu/test_effect_base.cc.o [ 67%] Building CXX object CMakeFiles/test_demo_effects.dir/src/tests/gpu/test_demo_effects.cc.o [ 67%] Building CXX object CMakeFiles/test_sequence.dir/src/generated/timeline.cc.o [ 68%] Building CXX object CMakeFiles/test_demo.dir/src/generated/test_demo_timeline.cc.o [ 68%] Building CXX object CMakeFiles/demo64k.dir/src/generated/timeline.cc.o [ 68%] Linking CXX executable test_3d_render [ 68%] Building CXX object CMakeFiles/test_effect_base.dir/src/generated/timeline.cc.o [ 68%] Linking CXX executable test_3d_physics [ 68%] Linking CXX executable test_mesh [ 71%] Built target test_3d_render [ 71%] Building CXX object CMakeFiles/test_post_process_helper.dir/src/tests/gpu/test_post_process_helper.cc.o [ 72%] Building CXX object CMakeFiles/test_demo_effects.dir/src/generated/timeline.cc.o [ 72%] Linking CXX executable test_demo [ 75%] Built target test_3d_physics [ 77%] Built target test_mesh [ 77%] Linking CXX executable test_texture_manager [ 78%] Linking CXX executable test_sequence [ 78%] Linking CXX executable test_gpu_procedural [ 80%] Built target test_demo [ 81%] Linking CXX executable test_gpu_composite [ 81%] Linking CXX executable demo64k [ 83%] Built target test_sequence [ 85%] Built target test_texture_manager [ 86%] Built target test_gpu_procedural [ 86%] Linking CXX executable test_post_process_helper [ 86%] Linking CXX executable test_effect_base [ 87%] Built target test_gpu_composite [ 90%] Built target demo64k [ 92%] Built target test_post_process_helper [ 96%] Built target test_effect_base [ 96%] Linking CXX executable test_demo_effects [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 [ 82%] Linking CXX executable test_demo.exe [ 90%] Built target test_demo [ 91%] Linking CXX executable demo64k.exe [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.
17 hoursRefactor: add gpu_create_texture_view_2d helperskal
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>
24 hoursCNN v2: bilinear mip-level sampling and UI improvementsskal
**CNN v2 Changes:** - Replace point sampling with bilinear interpolation for mip-level features - Add linear sampler (binding 6) to static features shader - Update CNNv2Effect, cnn_test, and HTML tool **HTML Tool UI:** - Move controls to floating bottom bar in central view - Consolidate video controls + Blend/Depth/Save PNG in single container - Increase left panel width: 300px → 315px (+5%) - Remove per-frame debug messages (visualization, rendering logs) **Technical:** - WGSL: textureSample() with linear_sampler vs textureLoad() - C++: Create WGPUSampler with Linear filtering - HTML: Change sampler from 'nearest' to 'linear' handoff(Claude): CNN v2 now uses bilinear mip-level sampling across all tools
31 hoursCNN v2: Fix weight buffer offset bugskal
Root cause: Binary format is [header:20B][layer_info:20B×N][weights]. Both cnn_test and CNNv2Effect uploaded entire file to weights_buffer, but shader reads weights_buffer[0] expecting first weight, not header. Fix: Skip header + layer_info when uploading to GPU buffer. - cnn_test.cc: Calculate weights_offset, upload only weights section - cnn_v2_effect.cc: Same fix for runtime effect Before: layer_0 output showed [R, uv_x, uv_y, black] (wrong channels) After: layer_0 output shows [R, G, B, D] (correct identity mapping) Tests: 34/36 passing (2 unrelated failures)
31 hourscnn_test: --weights now overrides layer config from .bin fileskal
When using --weights option: - Layer count and kernel sizes loaded from binary header - Warnings shown if --layers or --cnn-version specified - Help text clarifies precedence order - Binary weights always take precedence over CLI args Updated documentation: - doc/CNN_TEST_TOOL.md: Usage examples with --weights - doc/HOWTO.md: Runtime weight loading example handoff(Claude): cnn_test --weights config override
32 hourscnn_test: Add --weights option for runtime weight loadingskal
Enables testing different CNN v2 weight files without rebuilding. Automatically forces CNN v2 when --weights is specified, with warning if --cnn-version conflicts. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
33 hoursCNN v2: Use alpha channel for p3 depth feature + layer visualizationskal
Training changes (train_cnn_v2.py): - p3 now uses target image alpha channel (depth proxy for 2D images) - Default changed from 0.0 → 1.0 (far plane semantics) - Both PatchDataset and ImagePairDataset updated Test tools (cnn_test.cc): - New load_depth_from_alpha() extracts PNG alpha → p3 texture - Fixed bind group layout: use UnfilterableFloat for R32Float depth - Added --save-intermediates support for CNN v2: * Each layer_N.png shows 4 channels horizontally (1812×345 grayscale) * layers_composite.png stacks all layers vertically (1812×1380) * static_features.png shows 4 feature channels horizontally - Per-channel visualization enables debugging layer-by-layer differences HTML tool (index.html): - Extract alpha channel from input image → depth texture - Matches training data distribution for validation Note: Current weights trained with p3=0 are now mismatched. Both tools use p3=alpha consistently, so outputs remain comparable for debugging. Retrain required for optimal quality. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
36 hoursCNN test tool: Add CNN v2 support with compute shader architectureskal
Implement full CNN v2 support for offline validation: - Add --cnn-version flag (1=render pipeline, 2=compute shader) - Load binary weights from storage buffer (~3-5 KB) - Static features compute pass (7D: RGBD + UV + sin + bias) - Dynamic layer count from binary header - RGBA32Uint texture readback with f16→u8 conversion - Custom f16 decoder (handles denormals, infinity, NaN) Status: - CNN v1: Produces incorrect output (all white) - CNN v2: ✅ Fully functional, matches CNNv2Effect Updated docs: - doc/CNN_TEST_TOOL.md: Architecture, usage, validation workflow - doc/HOWTO.md: Recommend v2 for validation Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
3 daysfeat: implement beat-based timing systemskal
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>
3 daysfix: CNN bias accumulation and output format improvementsskal
- Fix bias division bug: divide by num_positions to compensate for shader loop accumulation (affects all layers) - train_cnn.py: Save RGBA output preserving alpha channel from input - Add --debug-hex flag to both tools for pixel-level debugging - Remove sRGB/linear_png debug code from cnn_test - Regenerate weights with corrected bias export Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
3 daysfix: Release cached samplers before WGPU shutdownskal
SamplerCache singleton never released samplers, causing device to retain references at shutdown. Add clear() method and call before fixture cleanup. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
4 daysfix: Resolve WGPU threading crash in cnn_testskal
- Release queue reference after submit in texture_readback - Add final wgpuDevicePoll before cleanup to sync GPU work Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
4 daysupdate cnn codeskal
4 daysadd --save-intermediates to train.py and cnn_testskal
4 daysfix: CNN test tool GPU readback with wgpuDevicePollskal
Fixed buffer mapping callback mode mismatch causing Unknown status. Changed from WaitAnyOnly+ProcessEvents to AllowProcessEvents+DevicePoll. Readback now functional but CNN output incorrect (all white). Issue isolated to tool-specific binding/uniform setup - CNNEffect in demo works correctly. Technical details: - WGPUCallbackMode_WaitAnyOnly requires wgpuInstanceWaitAny - Using wgpuInstanceProcessEvents with WaitAnyOnly never fires callback - Fixed by using AllowProcessEvents mode + wgpuDevicePoll - Removed debug output and platform warnings Status: 36/36 tests pass, readback works, CNN shader issue remains. handoff(Claude): CNN test tool readback fixed, output debugging needed
4 daysdebug: Add shader load verification and GPU sync to CNN test toolskal
Debug additions: - Print loaded shader size (confirms assets work: 2274 bytes) - Add wgpuDevicePoll after each layer for GPU sync - Verify shader loading with null/empty checks Findings: - Shader loads correctly (2274 bytes) - GPU commands execute without validation errors - Pipeline compiles successfully - Output remains all-black despite correct architecture Likely causes: - Render setup differs from demo's CNNEffect - Possible issue with bind group bindings - Fragment shader may not be executing - Texture sampling might be failing Next steps: - Create minimal solid-color render test - Compare bind group setup with working CNNEffect - Add fragment shader debug output (if possible) - Test with demo's CNN effect to verify weights/shader work Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
4 daysfix: CNN test tool ping-pong bug and RGBA16Float intermediatesskal
Bugfixes: - Fixed ping-pong logic: update current_input BEFORE flipping dst_idx - Use RGBA16Float for intermediate layers (preserve [-1,1] range from tanh) - Separate BGRA8Unorm final output texture for readback - Create two pipelines: intermediate (RGBA16Float) and final (BGRA8Unorm) - Fix all cleanup code to reference correct pipeline variables Implementation: - Intermediate textures use RGBA16Float to avoid clamping [-1,1] → [0,1] - Final layer renders to separate BGRA8Unorm texture - Correct texture view descriptors for each format - Layer 0-1: render to RGBA16Float ping-pong textures - Layer 2: render to BGRA8Unorm output texture Documentation: - Added CNN testing section to doc/HOWTO.md - Updated CNN_TEST_TOOL.md with ground-truth comparison workflow - Noted remaining black output bug (under investigation) Status: - Tool compiles and runs without GPU errors - Architecture correct: ping-pong, format conversion, separate pipelines - Output still all-black (unknown cause, needs debugging) - All 36 tests still pass handoff(Claude): CNN test tool bugfixes complete, black output remains Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
4 daysfeat: Add CNN shader testing tool with GPU texture readbackskal
Core GPU Utility (texture_readback): - Reusable synchronous texture-to-CPU readback (~150 lines) - STRIP_ALL guards (0 bytes in release builds) - Handles COPY_BYTES_PER_ROW_ALIGNMENT (256-byte alignment) - Refactored OffscreenRenderTarget to use new utility CNN Test Tool (cnn_test): - Standalone PNG→3-layer CNN→PNG/PPM tool (~450 lines) - --blend parameter (0.0-1.0) for final layer mixing - --format option (png/ppm) for output format - ShaderComposer integration for include resolution Build Integration: - Added texture_readback.cc to GPU_SOURCES (both sections) - Tool target with STB_IMAGE support Testing: - All 36 tests pass (100%) - Processes 64×64 and 555×370 images successfully - Ground-truth validation setup complete Known Issues: - BUG: Tool produces black output (uninitialized input texture) - First intermediate texture not initialized before layer loop - MSE 64860 vs Python ground truth (expected <10) - Fix required: Copy input to intermediate[0] before processing Documentation: - doc/CNN_TEST_TOOL.md - Full technical reference - Updated PROJECT_CONTEXT.md and COMPLETED.md handoff(Claude): CNN test tool foundation complete, needs input init bugfix Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
generated by cgit v1.2.3 (git 2.51.0) at 2026-02-15 06:28:30 +0000