From 6fa9ccf86b0bbefb48cefae19d4162115a3d63d3 Mon Sep 17 00:00:00 2001 From: skal Date: Fri, 13 Feb 2026 23:17:42 +0100 Subject: CNN v2: Alpha channel depth handling and layer visualization Training changes: - Changed p3 default depth from 0.0 to 1.0 (far plane semantics) - Extract depth from target alpha channel in both datasets - Consistent alpha-as-depth across training/validation Test tool enhancements (cnn_test): - Added load_depth_from_alpha() for R32Float depth texture - Fixed bind group layout for UnfilterableFloat sampling - Added --save-intermediates with per-channel grayscale composites - Each layer saved as 4x wide PNG (p0-p3 stacked horizontally) - Global layers_composite.png for vertical layer stack overview Investigation notes: - Static features p4-p7 ARE computed and bound correctly - Sin_20_y pattern visibility difference between tools under investigation - Binary weights timestamp (Feb 13 20:36) vs HTML tool (Feb 13 22:12) - Next: Update HTML tool with canonical binary weights handoff(Claude): HTML tool weights update pending - base64 encoded canonical weights ready in /tmp/weights_b64.txt for line 392 replacement. Co-Authored-By: Claude Sonnet 4.5 --- doc/CNN_TEST_TOOL.md | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'doc/CNN_TEST_TOOL.md') diff --git a/doc/CNN_TEST_TOOL.md b/doc/CNN_TEST_TOOL.md index ee0d9c5..82d5799 100644 --- a/doc/CNN_TEST_TOOL.md +++ b/doc/CNN_TEST_TOOL.md @@ -176,11 +176,12 @@ Compare output.png with training/target_X/img_000.png **CNN v1:** Builds and runs, produces incorrect output (all white). Use CNNEffect in demo for visual validation. -**CNN v2:** ✅ Fully functional. Tested and working. +**CNN v2:** ⚠️ Partially functional. Readback works but output differs from HTML validation tool. - Loads binary weights from `workspaces/main/weights/cnn_v2_weights.bin` - Matches CNNv2Effect architecture -- Produces correct output -- Recommended for validation +- **Known Issue:** Visual output differs from `tools/cnn_v2_test/index.html` despite matching shader code +- Root cause under investigation (weight indexing? texture sampling? activation clamping?) +- Use HTML tool (`tools/cnn_v2_test/index.html`) for accurate validation --- -- cgit v1.2.3