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webgl: ship only the GPU buckets that pass tampering_ml + decouple render-noise seed

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Cut the per-seed WebGL persona to the two renderer buckets that score clean on
FP Pro tampering_ml across seeds (AMD Radeon R9 200 Series and Intel Arc A750),
weighted 70/30, cross-vendor so the fleet isn't one fixed GPU. Every NVIDIA
bucket and the integrated/ancient Intel buckets are penalised, so they're out.

The canvas/WebGL render-image hash turned out to be the dominant tampering_ml
driver, not the attributes, so the render-noise seed (zoom.stealth.fpp.hw_seed)
is now decoupled from the identity seed and drawn from a calibrated clean pool.
Per-seed determinism and per-user diversity are preserved.

Also in this change:
- audio maxChannelCount is stereo-dominant per class (it reflects the output
  device, not the GPU; the old tables over-emitted 5.1/7.1 surround)
- route discrete Intel Arc desktop cards to a discrete-GPU class (not integrated)
- condition the whole sampled profile on the exposed GPU class via the sampler's
  evidence path, so cores/screen/storage stay coherent with the declared GPU
- apply per-named-font width factors on Windows/macOS so canvas measureText
  widths don't collapse to a single value

12/12 seeds clean on tampering_ml (worst 0.29), bot and anti-detect negative,
and the fingerprint stays identical across repeated runs of the same seed.
This commit is contained in:
feder-cr
2026-06-14 11:51:53 +02:00
parent 2dfa4e7bd7
commit 29262a644e
15 changed files with 444 additions and 155 deletions
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tests/test_sampler.py
+17 -2
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@@ -45,13 +45,28 @@ def test_classify_gpu_intel_hd_old_buckets(renderer):
"ANGLE (Intel, Intel(R) HD Graphics 530 Direct3D11)",
"ANGLE (Intel, Intel(R) UHD Graphics 630 Direct3D11)",
"ANGLE (Intel, Intel(R) Iris Xe Graphics Direct3D11)",
"ANGLE (Intel, Intel(R) Arc A750 Direct3D11)",
# Integrated Arc iGPUs (Core Ultra "Arc 130T/140T/Graphics") stay integrated_modern.
"ANGLE (Intel, Intel(R) Arc(TM) 140T GPU Direct3D11)",
])
def test_classify_gpu_intel_modern(renderer):
"""CG4-CG7 [DT]: modern Intel HD/UHD/Iris/Arc → integrated_modern."""
"""CG4-CG7 [DT]: modern Intel HD/UHD/Iris + integrated Arc → integrated_modern."""
assert classify_gpu(_gpu(renderer)) == "integrated_modern"
@pytest.mark.unit
@pytest.mark.parametrize("renderer,expected", [
# Discrete Intel Arc DESKTOP cards are NOT integrated: A5xx/A7xx/Bxxx ~ mid-range
# discrete (RTX 3060 tier); A3xx are entry discrete → low_end.
("ANGLE (Intel, Intel(R) Arc(TM) A750 Graphics Direct3D11 vs_5_0 ps_5_0)", "mid_range"),
("ANGLE (Intel, Intel(R) Arc(TM) A770 Graphics Direct3D11)", "mid_range"),
("ANGLE (Intel, Intel(R) Arc(TM) B580 Graphics Direct3D11)", "mid_range"),
("ANGLE (Intel, Intel(R) Arc(TM) A380 Graphics Direct3D11)", "low_end"),
])
def test_classify_gpu_intel_arc_discrete(renderer, expected):
"""Discrete Intel Arc desktop SKUs map to a discrete-GPU class, not integrated."""
assert classify_gpu(_gpu(renderer)) == expected
@pytest.mark.unit
@pytest.mark.parametrize("renderer", [
"ANGLE (AMD, AMD Radeon Graphics Direct3D11)",