On 28/12/16 11:18 AM, Kyle Brenneman wrote:
> GLVND doesn't respond to DRI_PRIME (and probably shouldn't, since that's
> very driver-specific), but it has an environment variable that you can
> use to override which vendor library it selects.
DRI_PRIME selects a GPU, not a driver. Each available GPU could be
supported by a different set of GLVND vendors.
With DRI2, DRI_PRIME={1,2,...} can be used to select a GPU based on some
kind of ordering (based on the RandR 1.4 providers list? Not sure).
With DRI3, DRI_PRIME=1 means "any GPU other than the one used by the X
server" (which in the common case of a laptop with 2 GPUs just means
"the other GPU"), or DRI_PRIME=[udev device identifier] selects a
specific GPU.
It would be nice if this could work with GLVND's libGL as well.
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
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