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- #include <GL/glx.h>
- #include <GL/gl.h>
-
- static int attributeList[] = { GLX_RGBA, None };
-
- static Bool WaitForNotify(Display *d, XEvent *e, char *arg) {
- return (e->type == MapNotify) && (e->xmap.window == (Window)arg);
- }
-
- int main(int argc, char **argv) {
- Display *dpy;
- XVisualInfo *vi;
- Colormap cmap;
- XSetWindowAttributes swa;
- Window win;
- GLXContext cx;
- XEvent event;
-
- /* get a connection */
- dpy = XOpenDisplay(0);
-
- /* get an appropriate visual */
- vi = glXChooseVisual(dpy, DefaultScreen(dpy), attributeList);
-
- /* create a GLX context */
- cx = glXCreateContext(dpy, vi, 0, GL_FALSE);
-
- /* create a colormap */
- cmap = XCreateColormap(dpy, RootWindow(dpy, vi->screen),
- vi->visual, AllocNone);
-
- /* create a window */
- swa.colormap = cmap;
- swa.border_pixel = 0;
- swa.event_mask = StructureNotifyMask;
- win = XCreateWindow(dpy, RootWindow(dpy, vi->screen), 0, 0, 100, 100,
- 0, vi->depth, InputOutput, vi->visual,
- CWBorderPixel|CWColormap|CWEventMask, &swa);
- XMapWindow(dpy, win);
- XIfEvent(dpy, &event, WaitForNotify, (char*)win);
-
- /* connect the context to the window */
- glXMakeCurrent(dpy, win, cx);
-
- /* clear the buffer */
- glClearColor(1,1,0,1);
- glClear(GL_COLOR_BUFFER_BIT);
- glFlush();
-
- /* wait a while */
- sleep(100);
- }
-
-