chore(data): drop the 23 presets whose GPU has no WebGL data

A preset records only its GPU's name. The WebGL parameters, extensions and
shader precision behind it have to come from somewhere, and for these 23
nothing Camoufox has describes the GPU: fpgen has never seen Firefox report it
on that OS. So each launch paired the name with another device's parameters,
a mismatch any WebGL fingerprinter can see. They were:

- Windows on ARM (Adreno 650);
- Direct3D 10-level GPUs (vs_4_0/vs_4_1);
- "Generic Renderer";
- 945GM and GTX 480 on macOS;
- nouveau/Mesa buckets on Linux;
- one Linux preset pairing NVIDIA's proprietary vendor string with the
  nouveau renderer name.

scripts/clean-fingerprint-data.py now applies the rule, via a shared
fingerprints.firefox_gpus(), and test_shipped_data asserts it. 374 presets
remain, and every OS keeps its presets. ROADMAP.md lists capturing WebGL data
for these GPUs, which would bring them back.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Jake Writer
2026-09-25 21:43:44 -06:00
co-authored by Claude Opus 5.5
parent 7dd0ec21f5
commit 40edebb925
6 changed files with 49 additions and 789 deletions
+18
View File
@@ -94,3 +94,21 @@ def test_every_gpu_row_can_be_drawn_on_some_os():
)
]
assert undrawable == []
@pytest.mark.parametrize("filename", PRESET_FILES)
def test_every_preset_gpu_has_webgl_data(filename):
"""A preset records only its GPU's name; the WebGL parameters behind it come
from fpgen. A GPU fpgen has never seen Firefox report on that OS has none, so
launching it would pair the name with another device's parameters."""
from camoufox.fingerprints import firefox_gpus
presets = json.loads((DATA / filename).read_text())["presets"]
for os_name, entries in presets.items():
known = firefox_gpus(os_name)
for index, preset in enumerate(entries):
gpu = (preset["webgl"]["unmaskedVendor"], preset["webgl"]["unmaskedRenderer"])
assert gpu in known, (
f"{filename} {os_name}[{index}]: {gpu[1]!r} has no WebGL data"
" -- run scripts/clean-fingerprint-data.py --write"
)