25881c701a
Support new vrend command that queries layout of a backing GBM buffer for a giver vrend resource. Use it for querying stride/modifier of a PIPE_SHARED resource, passing this info down to WSI for exported resources. Now venus is able to import vrend resources, making gamescope work in KMS mode on QEMU. Virgl doesn't use stride/modifier info of winsys when it imports classic vrend resources, hence this change only affects venus context when it imports virgl WSI buffers. Based on initial version of resource-layout command from Daniel Stone. Reviewed-by: Gert Wollny <gert.wollny@collabora.com> Acked-by: Yiwei Zhang <zzyiwei@gmail.com> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37646>