[Bug 92759] [Regression, bisected] Screen is darker than expected in Supertuxkart

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Dec 11 04:49:39 PST 2015


--- Comment #8 from Neil Roberts <neil at linux.intel.com> ---
Many thanks for the detailed bug report and all the research into the problem.

I think this is a problem with Mesa in that we should be using an sRGB-capable
visual even if no alpha bits are requested. It's not possible to force Mesa to
give you an sRGB-capable visual because apparently we don't advertise any, but
then we use sRGB formats internally anyway. I've posted a patch which should
fix this here:


Arguably there is a bug in supertuxkart too because perhaps it shouldn't assume
it always gets an sRGB visual and it should fall back if one isn't available.
However in practice if we fix this bug in Mesa then there's probably no cases
where that would happen except for the broken Mesa versions.

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