From: Kristian Høgsberg <krh@bitplanet.net>
Date: Thu, 9 Sep 2010 17:18:40 +0000 (-0400)
Subject: glx: Optimize out no-op make current calls
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=94118fe2d4b1e5d0b9f39d9d2c44706db462e97e;p=mesa.git

glx: Optimize out no-op make current calls

This make a lot more sense now that we might have to recreate the
glx drawables for legacy code paths.
---

diff --git a/src/glx/glxcurrent.c b/src/glx/glxcurrent.c
index 0d359f72b4a..36317383544 100644
--- a/src/glx/glxcurrent.c
+++ b/src/glx/glxcurrent.c
@@ -242,6 +242,10 @@ MakeContextCurrent(Display * dpy, GLXDrawable draw,
       return False;
    }
 
+   if (oldGC == gc &&
+       gc->currentDrawable == draw && gc->currentReadable == read)
+      return True;
+
    if (oldGC != &dummyContext) {
       oldGC->vtable->unbind(oldGC, gc);
       oldGC->currentDpy = 0;