- This should allow drivers to recieve post submission events for X<->opengl synchronisation.
- Lacking a testcase, i'm open to suggestion how to do it better.
- The idea is:
- driver recieves event
- driver creates personal identification and inserts marker into X fifo.
- when something wants to use an X pixmap, it checks if something is pending.
- If so, it synchronizes the 2nd fifo using the initial identification.
- Driver is not required to use interrupt based systems (price too high).
- Lower latency is ofcource better.
- If this is somehow unusable for you, then come up with improvements.
- For that reason i wouldn't consider the api fixed for the moment.
- I found no evidence in the protocol, that it should be differently from all the other modes.
- It seems to have been like this from day 1.
- If anyone has evidence to the contrary, please enlighten me.
- Redo damage naming for more consistency.
- Call post submission functions only where appropriate.
- EXA can now live without it's odd damage workarounds.
at CodeWeavers for the patch. From his description:
Fix a display bug with the X server. The Generic Rootless extension
installs overrides for certain GC (graphics context) operations. Within
these overrides, they temporarily uninstall themselves, perform their work,
and then reinstall themselves. Except sometimes they would return early
and wouldn't reinstall themselves when they should. Now they do in all cases.
Fix a bug in RootlessCopyWindow where early returns could leave the screen's
dispatch table entry for CopyWindow unwrapped. We think that this is
another case (hopefully the last) of the rootless drawing bug.
These hints allow an acceleration architecture to optimize allocation of certain
types of pixmaps, such as pixmaps that will serve as backing pixmaps for
redirected windows.
This was an attempt to avoid scratch gc creation and validation for paintwin
because that was expensive. This is not the case in current servers, and the
danger of failure to implement it correctly (as seen in all previous
implementations) is high enough to justify removing it. No performance
difference detected with x11perf -create -move -resize -circulate on Xvfb.
Leave the screen hooks for PaintWindow* in for now to avoid ABI change.
DamagePendingRegion returns a pointer to the region of a drawable that will
be damaged by the current operation for damage records that chose to get damage
reported only at the end of the operation.
over to new system.
Need to update documentation and address some remaining vestiges of
old system such as CursorRec structure, fb "offman" structure, and
FontRec privates.
Composite's automatic redirection is a more general mechanism than the
ad-hoc BS machinery, so it's much prettier to implement the one in terms
of the other. Composite now wraps ChangeWindowAttributes and activates
automatic redirection for windows with backing store requested. The old
backing store infrastructure is completely gutted: ABI-visible structures
retain the function pointers, but they never get called, and all the
open-coded conditionals throughout the DIX layer to implement BS are gone.
Note that this is still not a strictly complete implementation of backing
store, since Composite will throw the bits away on unmap and therefore
WhenMapped and Always hints are equivalent.