From: Derek Foreman <foremande@gmail.com>
Date: Fri, 25 Jun 2010 16:29:12 +0000 (-0400)
Subject: Vsync waits on systems that support GLX_EXT_swap_control
X-Git-Tag: cgl~16
X-Git-Url: http://git.openbox.org/?a=commitdiff_plain;h=3be27971b218908564072641bcb7bc1e7a6bea84;p=dana%2Fopenbox.git

Vsync waits on systems that support GLX_EXT_swap_control
---

diff --git a/openbox/composite.c b/openbox/composite.c
index 6e52ead0..7efe0b3b 100644
--- a/openbox/composite.c
+++ b/openbox/composite.c
@@ -335,6 +335,14 @@ gboolean composite_enable(void)
     /* register our screen redraw callback */
     composite_idle_source = g_idle_add(composite, NULL);
 
+    //Attempt to enable vsync
+    if (GLXEW_EXT_swap_control) {
+        GLXDrawable drawable = glXGetCurrentDrawable();
+        glXSwapIntervalEXT(obt_display, drawable, 1);
+    } else {
+        ob_debug_type(OB_DEBUG_CM, "Vsync control not available.");
+    }
+
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     glXSwapBuffers(obt_display, composite_overlay);
     glMatrixMode(GL_PROJECTION);