1 files changed, 139 insertions, 0 deletions
diff --git a/3rdparty/tinygl-0.4-ugfx/examples/x11.c b/3rdparty/tinygl-0.4-ugfx/examples/x11.c
new file mode 100644
index 00000000..13913f51
--- /dev/null
+++ b/3rdparty/tinygl-0.4-ugfx/examples/x11.c
@@ -0,0 +1,139 @@
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/keysym.h>
+
+#include <GL/glx.h> 
+#include <GL/gl.h> 
+#include "ui.h"
+
+
+#ifndef M_PI
+#  define M_PI 3.14159265
+#endif
+
+static int attributeList[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
+
+static Bool WaitForNotify(Display *d, XEvent *e, char *arg) 
+{
+  return (e->type == MapNotify) && (e->xmap.window == (Window)arg); 
+}
+
+Display *dpy;
+Window win;
+
+void tkSwapBuffers(void)
+{
+    glXSwapBuffers(dpy,win);
+}
+
+int ui_loop(int argc, char **argv, const char *name)
+{
+  XVisualInfo *vi;
+  Colormap cmap;
+  XSetWindowAttributes swa;
+  XSizeHints hint;
+  GLXContext cx;
+  XEvent event;
+  int k, width, height;
+  char buf[80];
+  XEvent xev;
+  KeySym keysym;
+  XComposeStatus status;
+  
+  /* get a connection */
+  dpy = XOpenDisplay(NULL);
+  if (dpy == NULL) {
+      fprintf(stderr,"Could not open X display\n");
+      exit(1);
+  }
+  
+  /* get an appropriate visual */
+  vi = glXChooseVisual(dpy, DefaultScreen(dpy), attributeList);
+  if (vi == NULL) {
+      fprintf(stderr, "No suitable visual for glx\n");
+      exit(1);
+  }
+      
+  /* create a GLX context */
+  cx = glXCreateContext(dpy, vi, 0, GL_TRUE);
+
+  /* create a color map */
+  cmap = XCreateColormap(dpy, RootWindow(dpy, vi->screen),
+			 vi->visual, AllocNone);
+
+  /* create a window */
+  width = 400;
+  height = 300;
+  hint.x = 0;
+  hint.y = 0;
+  hint.width = width;
+  hint.height = height;
+  hint.flags = PPosition | PSize;
+  swa.colormap = cmap;
+  swa.border_pixel = 0;
+  swa.event_mask = StructureNotifyMask;
+  win = XCreateWindow(dpy, RootWindow(dpy, vi->screen), 0, 0, width, height,
+		      0, vi->depth, InputOutput, vi->visual,
+		      CWBorderPixel|CWColormap|CWEventMask, &swa);
+  XSetStandardProperties (dpy, win, name, name, None, NULL, 0, &hint);
+
+  XMapWindow(dpy, win);
+  XIfEvent(dpy, &event, WaitForNotify, (char*)win);
+  XSelectInput(dpy, win, KeyPressMask | StructureNotifyMask | ExposureMask);
+
+  /* connect the context to the window */
+  glXMakeCurrent(dpy, win, cx);
+
+  init();
+  reshape(width, height);
+
+  while (1) {
+    if (XPending(dpy) > 0) {
+      XNextEvent(dpy,&xev);
+      switch(xev.type) {
+      case KeyPress:
+	XLookupString((XKeyEvent *)&xev,buf,80,&keysym,&status);
+        switch(keysym) {
+        case XK_Up:
+            k = KEY_UP;
+            break;
+        case XK_Down:
+            k = KEY_DOWN;
+            break;
+        case XK_Left:
+            k = KEY_LEFT;
+            break;
+        case XK_Right:
+            k = KEY_RIGHT;
+            break;
+        case XK_Escape:
+            k = KEY_ESCAPE;
+            break;
+        default:
+            k = keysym;
+        }
+        key(k, 0);
+	break;
+      case ConfigureNotify:
+	{
+	  int width,height;
+	  width = xev.xconfigure.width;
+	  height = xev.xconfigure.height;
+	  glXWaitX();
+          reshape(width, height);
+	}
+	break;
+      }
+    } else {
+      idle();
+    }
+  }
+  return 0;
+}
+
+