So last week I regressed WebGL in bug 900201, to the extent that all WebGL context creation started failing (!). We didn't have any test coverage for that. There is a thing in content/canvas/test/webgl/non-conf-tests/test_webgl_conformance.html that seems to be OK with WebGL not being available on B2G. Other WebGL-using tests in content/canvas/test/crossorigin failed, but were KNOWN-FAIL anyway.
test_webgl_conformance doesn't check if it's possible to get a general webgl context, but rather a "webgl" context, as opposed to an "experimental-webgl" context. It's easy enough to add a 'we expect to have webgl work' test, though.
IIRC, WebGL reftests are failing on B2G, as well. We would get incidental coverage that way, if they were working.
Are there any bugs reenabling WebGL on B2G tbpl?
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