Signed-off-by: Aaron Plattner <aplatt...@nvidia.com>
---
progs/xdemos/glxgears.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/progs/xdemos/glxgears.c b/progs/xdemos/glxgears.c
index 2993c82..92c75ca 100644
--- a/progs/xdemos/glxgears.c
+++ b/progs/xdemos/glxgears.c
@@ -35,6 +35,7 @@
#include <X11/keysym.h>
#include <GL/gl.h>
#include <GL/glx.h>
+#include <GL/glxext.h>
#ifndef GLX_MESA_swap_control
#define GLX_MESA_swap_control 1
@@ -586,11 +587,17 @@ is_glx_extension_supported(Display *dpy, const char
*query)
* Attempt to determine whether or not the display is synched to vblank.
*/
static void
-query_vsync(Display *dpy)
+query_vsync(Display *dpy, GLXDrawable drawable)
{
int interval = 0;
-
+#if defined(GLX_EXT_swap_control)
+ if (is_glx_extension_supported(dpy, "GLX_EXT_swap_control")) {
+ unsigned int tmp = -1;
+ glXQueryDrawable(dpy, drawable, GLX_SWAP_INTERVAL_EXT, &tmp);
+ interval = tmp;
+ } else
+#endif
if (is_glx_extension_supported(dpy, "GLX_MESA_swap_control")) {
PFNGLXGETSWAPINTERVALMESAPROC pglXGetSwapIntervalMESA =
(PFNGLXGETSWAPINTERVALMESAPROC)
@@ -749,7 +756,7 @@ main(int argc, char *argv[])
make_window(dpy, "glxgears", x, y, winWidth, winHeight, &win, &ctx);
XMapWindow(dpy, win);
glXMakeCurrent(dpy, win, ctx);
- query_vsync(dpy);
+ query_vsync(dpy, win);
if (printInfo) {
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
--
1.6.3.3
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