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glxgears: Support GLX_EXT_swap_control for querying the current swap interval.

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Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Signed-off-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Aaron Plattner 2010-01-26 10:14:11 -08:00 • committed by Brian Paul
parent 782f66c8a2
commit cec0e7c086
1 changed files with 10 additions and 3 deletions
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13
progs/xdemos/glxgears.c
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@ -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));