gbm: track buffer format through DRI drivers

GBM needs the buffer format in order to communicate with DRM and clients
for things like scanout.

So track the DRI format requested in the various back ends and use it to
return the DRI format back to GBM when requested.  GBM will then map
this into the GBM surface type (which is in turn based on the DRM fb
format list).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/dri/common/dri_screen.h b/src/gallium/state_trackers/dri/common/dri_screen.h
index 8c961955ac9..2818e9c2683 100644
--- a/src/gallium/state_trackers/dri/common/dri_screen.h
+++ b/src/gallium/state_trackers/dri/common/dri_screen.h
@@ -85,6 +85,7 @@ struct __DRIimageRec {
    struct pipe_resource *texture;
    unsigned level;
    unsigned layer;
+   uint32_t dri_format;
 
    void *loader_private;
 };