[yarp]

Looking at this: https://codereview.chromium.org/1548893004/ and this, is there chance that there will be decent option for headless webgl testing or making screenshots? Phantomjs doesnt want to do that, slimmerjs also (on xvfb), anybody have a working solution?

[bhouston]

For http://Clara.io, we explored a bunch of headless gl solutions and none worked. It may have changed by now. But even if you got a headless gl solution working, it likely would have poor extension support, which means the results will suffer anyhow. :(

[yarp]

So did you take any other solution? I was thinking about renting or collocating server with gpu and just automate whole process with ansible/fabric or just vnc. About exentions - thats true. I was able to run software rending for shaders (llvm, xvfb, ec2), framerate was acceptable (1-5 fps, which is more than fine for screenshots), but issues like having max anisotropy = 1 make it unusable for this use case.

[jdashg]

Mozilla's WebGL CI tests for Linux and Android run on Mesa's software renderer, though I'm not sure if we use LLVMPipe specifically. It works...ok.

[yarp]

Could you provide some links to results? Are you talking about mochitest-gl?

[jdashg]

Primarily mochitest-gl, but also others. You can get an idea of what uses it by seeing what is blocking updating our ancient version of Mesa.[1] We anticipate that this update should improve the reliability of our tests.

I don't think there are specific results that are useful to anyone but us, other than that Mesa is viable for these sorts of things. We don't have a centralized tracking list for Mesa issues.

Like usual, if you try running WebGL on Mesa and run into unfixed issues, file a bug and we'll fix it.

[1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1220658