thejayman77
ba74bbd5aa
Per-vertex GS fog end-to-end (gs_stub emit incl. persp_emit5, gs_prim_list_feeder XYZ2->XYZF2 on PRIM.FGE, gs_make_sh3_scheduler_fixture.py F/FGE packing), new fog TBs, fidelity attribution tooling. Functional baseline before removing the dead bilinear lerp8 clamps (Codex: 161-node comb loop -> -0.042ns setup fail). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
40 lines
1.7 KiB
Markdown
40 lines
1.7 KiB
Markdown
# Ch404 — chronological character-detail tail
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Ch404 appends the next 36 authentic opaque draws after the accepted Ch403
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frame. Thirty-five staging-safe epochs preserve dump order and cover the
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character/lower-body region without changing RTL or requiring another fit.
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## Fixture and infrastructure
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- `zsrt139b1`: generated 35-epoch detail tail.
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- `zsrt139b2`: merged Ch403 base plus the tail, 75 epochs total.
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- `tools/merge_runtime_sched.py`: concatenates accepted runtime-CLUT fixtures
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without regenerating or changing their staged records.
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- Host and shared-testbench epoch ceilings increase from 64 to 128; staging RAM
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remains 2,048 words and the FPGA image is unchanged.
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## RTL verification
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- 667,279 fragments fed; 351,074 passed persistent Z.
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- 75 ordered markers and drains.
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- Zero request drops, color FIFO overflows, or AXI response errors.
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- Z mismatch `0/307200`; color mismatch `0/132783` written pixels.
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- RTL framebuffer SHA-256:
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`8715381278c2b0a6e527329fb02aaaaf53edbaefd637f115723a3425bbd1b209`.
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The tail adds 1,003 nonblack pixels over Ch403. Against the resized PCSX2
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frame, RGB MAE improves from 23.8474 to 23.7846 and RMSE from 34.8791 to
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34.6956. This is a bounded character-detail gain, not the missing environment
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or fog solution.
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## Silicon acceptance
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The timing-clean Ch403 RBF was retained. The board completed all 75 epochs
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with every texture CRC, runtime palette checksum, staging count, record count,
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fresh drain, zero-drop, and bus-error gate clean; the host returned `0`.
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The 307,200-word board framebuffer is byte-for-byte identical to RTL and has
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the same SHA-256
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`8715381278c2b0a6e527329fb02aaaaf53edbaefd637f115723a3425bbd1b209`.
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The 75-epoch composite is live on HDMI.
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