I'm using Mesa 8.1-devel (git-e1a173f) with Linux 3.4.0-rc2 and Mobility Radeon HD 5470 and Firefox nightly 20120419030644 If I run the WebGL conformance tests from here: https://cvs.khronos.org/svn/repos/registry/trunk/public/webgl/conformance-suites/1.0.1/webgl-conformance-tests.html one of the failing tests is conformance/programs/program-test.html Error says: failed: getError expected: NO_ERROR. Was INVALID_OPERATION : drawing with a valid program shouldn't generate a GL error
Fixed by firefox works with mesa 8.0.3, mesa master and firefox nightly
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