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glx: Don't do the implicit glFlush in SwapBuffers if it's the wrong drawable.

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The GLX Spec says you only implicitly glFlush if the drawable being
swapped is the current context's drawable.
This commit is contained in:
Eric Anholt 2011-02-14 18:38:33 -08:00
parent 49d7e48b33
commit 4d01bea808
1 changed files with 6 additions and 2 deletions
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8
src/glx/glxcmds.c
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@ -727,11 +727,16 @@ glXSwapBuffers(Display * dpy, GLXDrawable drawable)
xGLXSwapBuffersReq *req;
#endif
gc = __glXGetCurrentContext();
#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
__GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
if (pdraw != NULL) {
glFlush();
if (gc && drawable == gc->currentDrawable) {
glFlush();
}
(*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0);
return;
}
@ -746,7 +751,6 @@ glXSwapBuffers(Display * dpy, GLXDrawable drawable)
** The calling thread may or may not have a current context. If it
** does, send the context tag so the server can do a flush.
*/
gc = __glXGetCurrentContext();
if ((gc != NULL) && (dpy == gc->currentDpy) &&
((drawable == gc->currentDrawable)
|| (drawable == gc->currentReadable))) {