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virgl: Add a caps feature check version

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When we add new feature checks on the host side that is used to
enable a cap conditionally that was enabled unconditionally before
we might end up with a feature regression when a new mesa version
is used with an old virglrenderer version that doesn't check for
that cap.

To work around this problem add a version id to the caps that corresponds
to the features that are actually checked on the host and check that
version too when enabling the cap.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Pohsien Wang <pwang@chromium.org>
(cherry-picked from commit a0edceb00d)
This commit is contained in:
Gert Wollny 2019-03-27 09:07:36 +01:00 • committed by Gert Wollny
parent a5609f46f5
commit 8b26c9159d
2 changed files with 2 additions and 0 deletions
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1
src/gallium/drivers/virgl/virgl_hw.h
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@ -358,6 +358,7 @@ struct virgl_caps_v2 {
uint32_t max_atomic_counter_buffers[6];
uint32_t max_combined_atomic_counters;
uint32_t max_combined_atomic_counter_buffers;
uint32_t host_feature_check_version;
};
union virgl_caps {

1
src/gallium/drivers/virgl/virgl_winsys.h
View file

@ -150,5 +150,6 @@ static inline void virgl_ws_fill_new_caps_defaults(struct virgl_drm_caps *caps)
caps->caps.v2.max_image_samples = 0;
caps->caps.v2.max_compute_work_group_invocations = 0;
caps->caps.v2.max_compute_shared_memory_size = 0;
caps->caps.v2.host_feature_check_version = 0;
}
#endif