dri3: Add GLX_EXT_buffer_age support

v2: Indent according to Mesa style, reuse sbc instead of making a new
    swap_count field, and actually get a usable back before returning the
    age of the back (fixing updated piglit tests).  Changes by anholt.

Signed-off-by: Adel Gadllah <[email protected]>
Reviewed-by: Robert Bragg <[email protected]> (v1)
Reviewed-by: Adel Gadllah <[email protected]> (v2)
Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/glx/dri3_priv.h b/src/glx/dri3_priv.h
index 1d124f8abd7..316e3131532 100644
--- a/src/glx/dri3_priv.h
+++ b/src/glx/dri3_priv.h
@@ -97,6 +97,7 @@ struct dri3_buffer {
    uint32_t     cpp;
    uint32_t     flags;
    uint32_t     width, height;
+   uint64_t     last_swap;
 
    enum dri3_buffer_type        buffer_type;
 };