docs/envvars: document MESA_VK_WSI_PRESENT_MODE
This env var was introduced in a182adfd ("wsi: allow to override the present mode with MESA_VK_WSI_PRESENT_MODE").
Signed-off-by: Simon Ser contact@emersion.fr
cc @hakzsam
This env var was introduced in a182adfd ("wsi: allow to override the present mode with MESA_VK_WSI_PRESENT_MODE").
Signed-off-by: Simon Ser contact@emersion.fr
cc @hakzsam