[Mesa-dev] WebGL WG interested in 1.0.1 conformance test results on real drivers

Eric Anholt eric at anholt.net
Tue Apr 17 18:59:17 PDT 2012

On Tue, 17 Apr 2012 12:41:21 -0700 (PDT), Jose Fonseca <jfonseca at vmware.com> wrote:
> ----- Original Message -----
> > Is it possible to run just a subtest?  It would be nice to apitrace
> > what's going on in this testcase, but if I run the whole test I won't
> > be
> > able to find where the failure was in the trace.
> apitrace/scripts/retracediff.py allows to run against a software
> renderer, and quickly spot what call the rendering diverges, but given
> that all available software renderers are based from Mesa, odds are
> many bugs will appear on both, so not that useful.
> One of these day's I'll add SSH support to retracediff.py, so that one
> can eaily compare the rendering against a remote machine (running,
> e.g., NVIDIA OpenGL), or even a different OS. Of course, this only
> works if both implementations support the functionality recorded in
> the trace.

The issue in question was that a GL_INVALID_OPERATION was thrown at a
point that it shouldn't have been, so it wouldn't show up as rendering.
Whacking the HTML sounds like a better way to isolate the failure.
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