Re: Implement GLX_EXT_buffer_age for DRI2

On 19 January 2015 at 21:00, Chris Wilson chris@chris-wilson.co.uk wrote:

In order to suport GLX_EXT_buffer_age in DRI2, we need to pass back the last swap buffer count that the back buffer was defined for. For simplicity, we can reuse an existing field in the DRI2GetBuffers reply that is not used by current drivers, the flags. Since we change the interpretation of this flag, we also declare the semantic change with a DRI2 parameter and depend upon the DDX to enable the change responsibility (which is just a matter of reviewing whether the flags field has ever been used for a non-zero value).

This is just missing the why do we need to add this to DRI2 when we have DRI3/Present that should be solving it.

Doesn't dri3 already do this?

Dave.