[Bug 86816] rendering artifacts with WebGL zombies

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86816

--- Comment #10 from Eero Tamminen <eero.t.tamminen at intel.com> ---
I tried it on SKL GT2.  With Mesa 11.2 there are small white triangles at
bottom left corner.  With Mesa git from few minutes ago, there's a large noisy
triangle, and few smaller ones on top of each other (smaller triangles have
larger noisy "pixels").  Same both with Firefox & Chromium.

I wasn't able to get working apitrace trace from Firefox, but I got one from
Chromium.

When replaying the trace, Apitrace outputs several times following:
* message: api issue 4: FBO incomplete: Unsupported HW texture/renderbuffer
format attached: MESA_FORMAT_RGB_FLOAT32
* message: api issue 5: FBO incomplete: driver marked FBO as incomplete [-1]
* warning: 0:1(12): warning: extension `GL_ARB_gpu_shader5' unsupported in
vertex shader

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