On 08/13/2012 08:43 AM, Eric Anholt wrote:
Ian Romanick <i...@freedesktop.org> writes:
The tail should not wag the dog. If the application requests such a
config, we should not page flip.  There are cases where the copy is
preferable because it leaves the backbuffer intact.

Well, that would require extra work in dri2 to use the older copyregion
interface if the bit is set, and then you lose correct vblank syncing.
Unless you're planning on new dri2 protocol.

Or we could just remove this interface that, as far as I know, no app
uses.

I'm pretty sure both Firefox and Blender want this for their UI elements. Firefox might not use it anymore, but I'm sure Blender does. Blender also won't care about vsync.
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