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 --- workspaces/main/shaders/cnn_v2/cnn_v2_static.wgsl | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'workspaces/main/shaders/cnn_v2/cnn_v2_static.wgsl') diff --git a/workspaces/main/shaders/cnn_v2/cnn_v2_static.wgsl b/workspaces/main/shaders/cnn_v2/cnn_v2_static.wgsl index 35068a2..7b08132 100644 --- a/workspaces/main/shaders/cnn_v2/cnn_v2_static.wgsl +++ b/workspaces/main/shaders/cnn_v2/cnn_v2_static.wgsl @@ -48,9 +48,9 @@ fn main(@builtin(global_invocation_id) id: vec3) { let p2 = rgba.b; let p3 = textureLoad(depth_tex, coord, 0).r; - // UV coordinates (normalized [0,1], bottom-left origin) + // UV coordinates (normalized [0,1], top-left origin - matches training) let uv_x = f32(coord.x) / f32(dims.x); - let uv_y = 1.0 - (f32(coord.y) / f32(dims.y)); + let uv_y = f32(coord.y) / f32(dims.y); // Multi-frequency position encoding let sin20_y = sin(20.0 * uv_y); -- cgit v1.2.3