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- CNN_V3.md: complete design document
- U-Net enc_channels=[4,8], ~5 KB f16 weights
- FiLM conditioning (5D → γ/β per level, CPU-side MLP)
- 20-channel feature buffer, 32 bytes/pixel: two rgba32uint textures
- feat_tex0: albedo.rgb, normal.xy, depth, depth_grad.xy (f16)
- feat_tex1: mat_id, prev.rgb, mip1.rgb, mip2.rgb, shadow, transp (u8)
- 4-pass G-buffer: raster MRT + SDF compute + lighting + pack
- Per-pixel parity framework: PyTorch / HTML WebGPU / C++ WebGPU (≤1/255)
- Training pipelines: Blender full G-buffer + photo-only (channel dropout)
- train_cnn_v3_full.sh spec (modelled on v2 script)
- HTML tool adaptation plan from cnn_v2/tools/cnn_v2_test/index.html
- Binary format v3 header spec
- 8-phase ordered implementation checklist
- TODO.md: add CNN v3 U-Net+FiLM future task with phases
- cnn_v3/README.md: update status to design phase
handoff(Gemini): CNN v3 design complete. Phase 0 (stub G-buffer) unblocks
all other phases — one compute shader writing feat_tex0+feat_tex1 with
synthetic values from the current framebuffer. See cnn_v3/docs/CNN_V3.md
Implementation Checklist.
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