From 61d26bc82e7c4100acfb551cbb0ba9d84bbc4ba5 Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Mon, 8 Feb 2010 19:27:56 +0100 Subject: dri2: Event driven buffer validation. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When a buffer invalidation event is received from the X server, the "invalidate" hook of the DRI2 flush extension is executed: A generic implementation (dri2InvalidateDrawable) is provided that just bumps the "pStamp" sequence number in __DRIdrawableRec. For old servers not supporting buffer invalidation events, the invalidate hook will be called before flushing the fake front/back buffer (that's typically once per frame -- not a lot worse than the situation we were in before). No effort has been made on preserving backwards compatibility with version 2 of the flush extension, but I think it's acceptable because AFAIK no released stack is making use of it. Signed-off-by: Kristian Høgsberg --- src/glx/dri2.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'src/glx/dri2.c') diff --git a/src/glx/dri2.c b/src/glx/dri2.c index 91053d3fb6..a7a8cb50aa 100644 --- a/src/glx/dri2.c +++ b/src/glx/dri2.c @@ -81,7 +81,7 @@ static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay, dri2Info, dri2ExtensionName, &dri2ExtensionHooks, - 1, NULL) + DRI2NumberEvents, NULL) static Bool DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire) @@ -126,7 +126,15 @@ DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire) return True; } #endif +#ifdef DRI2_InvalidateBuffers + case DRI2_InvalidateBuffers: + { + xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire; + dri2InvalidateBuffers(dpy, awire->drawable); + return False; + } +#endif default: /* client doesn't support server event */ break; -- cgit v1.2.3