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| author | skal <pascal.massimino@gmail.com> | 2026-02-11 07:07:29 +0100 |
|---|---|---|
| committer | skal <pascal.massimino@gmail.com> | 2026-02-11 07:07:29 +0100 |
| commit | 3915a5e1c8c904f8f2154845cb99223a598653ee (patch) | |
| tree | cb0e75dea7f8aa729d3b440a5e81b3ac811f8f04 /PROJECT_CONTEXT.md | |
| parent | 01e640be66f9d72c22417403eb88e18d6747866f (diff) | |
feat: Add CNN shader testing tool with GPU texture readback
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>
Diffstat (limited to 'PROJECT_CONTEXT.md')
| -rw-r--r-- | PROJECT_CONTEXT.md | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/PROJECT_CONTEXT.md b/PROJECT_CONTEXT.md index fb876e5..8b84cde 100644 --- a/PROJECT_CONTEXT.md +++ b/PROJECT_CONTEXT.md @@ -35,7 +35,8 @@ - **Audio:** Sample-accurate sync. Zero heap allocations per frame. Variable tempo. Comprehensive tests. - **Shaders:** Parameterized effects (UniformHelper, .seq syntax). Modular WGSL composition. - **3D:** Hybrid SDF/rasterization with BVH. Binary scene loader. Blender pipeline. -- **Effects:** CNN post-processing foundation (single-layer, modular snippets, ready for training integration). +- **Effects:** CNN post-processing foundation (3-layer architecture, modular snippets, validation tool). +- **Tools:** CNN test tool for offline shader validation. Texture readback utility for GPU-to-CPU operations. - **Build:** Asset dependency tracking. Size measurement. Hot-reload (debug-only). - **Testing:** **36/36 passing (100%)** @@ -57,7 +58,7 @@ See `TODO.md` for current priorities and active tasks. **Technical Reference:** - Core: `ASSET_SYSTEM.md`, `SEQUENCE.md`, `TRACKER.md`, `3D.md`, `CNN_EFFECT.md` - Formats: `SCENE_FORMAT.md`, `MASKING_SYSTEM.md` -- Tools: `BUILD.md`, `WORKSPACE_SYSTEM.md`, `SIZE_MEASUREMENT.md` +- Tools: `BUILD.md`, `WORKSPACE_SYSTEM.md`, `SIZE_MEASUREMENT.md`, `CNN_TEST_TOOL.md` **History:** - `doc/COMPLETED.md` - Completed tasks archive |