On Mon, Jun 6, 2016 at 12:24 PM, Marek Olšák <mar...@gmail.com> wrote: > On Mon, Jun 6, 2016 at 11:47 AM, Michel Dänzer <mic...@daenzer.net> wrote: >> On 06.06.2016 18:44, Axel Davy wrote: >>> On 06/06/2016 11:37, Michel Dänzer wrote : >>>> With DRI3, st/dri could (re-)allocate buffers with the scanout flag >>>> first and after any window geometry changes, then re-allocate without >>>> the flag if the present complete event indicates that page flipping >>>> couldn't be used. >>> >>> That sounds like a bad idea, >>> if someone is playing game fullscreen, then alt tab to check something, >>> and goes back, then st/dri would >>> have decided to use non-scanout images (since no flips were used when >>> alt-tab was used). >> >> That's why I wrote that st/dri3 should re-allocate the buffers with the >> scanout flag after any window geometry changes, such as when putting the >> game window back to fullscreen. > > It looks like I can do the reallocation on > XCB_PRESENT_COMPLETE_MODE_{FLIP,COPY) changes, but that comes from > XCB_PRESENT_COMPLETE_NOTIFY, which seems too late. > > There is also XCB_PRESENT_CONFIGURE_NOTIFY, but it's not clear to me > how to get the scanout/non-scanout flag from that.
Oh I get it now: - Always set SCANOUT on XCB_PRESENT_CONFIGURE_NOTIFY. - Reallocate to non-scanout if I receive XCB_PRESENT_COMPLETE_MODE_COPY. Marek _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev