mesa: webgl bug (context/context-attributes-alpha-depth-stencil-antialias)
This WebGL test fails on every driver I've tested. Specifically, it fails the stencil && !depth
case, where the visual is supposed to use a stencil-only framebuffer and Mesa uses a depth+stencil framebuffer.
I tried to figure out where the fb config was actually getting set, but it was beyond me.