[Bug 103047] lighting render issue with i965 on SKL+

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103047

--- Comment #15 from Steven Noonan <steven at uplinklabs.net> ---
Wow, thanks for digging into this!

I can confirm that using glShadingModel(GL_SMOOTH) *or*
glProvokingVertexEXT(GL_FIRST_VERTEX_CONVENTION_EXT) both eliminate the issue
in the Darwinia landscape/water renderers. The glProvokingVertexEXT change
looks better for Darwinia's case because it doesn't appear to negatively impact
the intended appearance.

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