[Bug 57875] Second Life viewer bad rendering with git-ec83535

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57875

--- Comment #13 from Stefan Dösinger <stefandoesinger at gmx.at> ---
I think a new extension is the way to go. We could probably call it
GL_MESA_depth_clip_disable or GL_MESA_depth_clamp_d3d.

One could try to combine the CLIP_DISABLE register with clamping gl_FragDepth
inside the fragment shader. I'd expect the cost of this to be way too high,
even if it's just enabled when both GL_DEPTH_TEST and GL_DEPTH_CLAMP are
enabled. Maybe some considerations similar to GL_ARB_conservative_depth can be
applied, but I guess that'd require hardware support.

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