Add release function for texture_from_pixmap extension.
Some platform need to release texture image for texture_from_pixmap
extension, add this interface for those platforms.
The Gallium EGL state tracker reuses dri2.c but not the GLX code.
Currently there is a bit of code in dri2.c that is incorrectly tied
to GLX: instead, make it call an helper that both GLX and Gallium EGL
implement, like dri2InvalidateBuffers.
This avoids a link error complaining that dri2GetGlxDrawableFromXDrawableId
is undefined.
Note that we might want to move the whole event translation elsewhere,
and probably stop using non-XCB DRI2 altogether, but this seems to be
the minimal fix.
For GLX 1.3 drawables, we can destroy the DRI2 drawable when the GLX
drawable is destroyed. However, for legacy drawables, there os no
good way of knowing when the application is done with it, so we just
let the DRI2 drawable linger on the server. The server will destroy
the DRI2 drawable when it destroys the X drawable or the client exits
anyway.
https://bugs.freedesktop.org/show_bug.cgi?id=30109
Doesn't work for pixmaps, was looking up the GLX XID and was never thread
safe. Instead, just destroy the client side structures when the
drawable is no long current for a context.
There is no assignment to the "ret" variable if X_DRI2SwapBuffers is
not defined. In this case, the earlier explicit "return 0" is likely
to be used, but the compiler can't be sure of that, (nor can I for
that matter).
We cover this case by explicitly initializing "ret" to 0.
GLXscreenConfigs is badly named and a dumping ground for a lot of stuff.
This patch creates private screen structs for the dri drivers and moves
some of their fields over there.
DRI2 events are sent to the X drawable ID used to create the DRI2 drawable,
not the GLX drawable ID. So when an event comes in, we need to look up
the __GLXDRIdrawable by its X drawable ID, which needs a new hash table.
The backwards compatibility code calls the DRI driver invalidate hook
on swap buffer and flush front buffer. This lets the DRI driver rely
on invalidate callbacks and drop the glViewport() hack, even if the
server doesn't send invalidate events. This is essentially a revert
of 2d00d16da7, except that we now also
pass the __DRI_USE_INVALIDATE extension even when the server doesn't
have DRI2 invalidate events.
When we have DRI2 protocol at least 2.3, we get an event from the
server when the back buffers get invalidated. When that's the case
let the driver know that it can rely on invalidate instead of the
glViewport polling.
We only need this when the server may have swapped the buffers or
when we receive an invalidate event from the server. The default
behaviour is still that the DRI driver will invalidate its own buffers
when glViewport is called.
https://bugs.freedesktop.org/show_bug.cgi?id=27277
Henri Verbeet
Juan Zhao
Kristian Høgsberg
Luca Barbieri
Carl Worth
Eric Anholt
Michel Dänzer
Brian Paul
Pierre Willenbrock
Jeremy Huddleston