add segl

1 files changed, 117 insertions, 0 deletions

diff --git a/progs/egl/segl/segl_x11.c b/progs/egl/segl/segl_x11.c
new file mode 100644
index 00000000000..7b26917460a
--- /dev/null
+++ b/progs/egl/segl/segl_x11.c
@@ -0,0 +1,117 @@
+#include <stdlib.h>
+#include <sys/time.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+#include "segl.h"
+
+static Window
+x11_create_window(struct segl_winsys *winsys, const char *name,
+                  EGLint width, EGLint height, EGLint visual)
+{
+   XVisualInfo vinfo_template, *vinfo = NULL;
+   EGLint val, num_vinfo;
+   Window root, win;
+   XSetWindowAttributes attrs;
+   unsigned long mask;
+   EGLint x = 0, y = 0;
+
+   vinfo_template.visualid = (VisualID) val;
+   vinfo = XGetVisualInfo(winsys->dpy, VisualIDMask, &vinfo_template, &num_vinfo);
+   if (!num_vinfo) {
+      if (vinfo)
+         XFree(vinfo);
+      return None;
+   }
+
+   root = DefaultRootWindow(winsys->dpy);
+
+   /* window attributes */
+   attrs.background_pixel = 0;
+   attrs.border_pixel = 0;
+   attrs.colormap = XCreateColormap(winsys->dpy, root, vinfo->visual, AllocNone);
+   attrs.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
+   attrs.override_redirect = False;
+   mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask | CWOverrideRedirect;
+
+   win = XCreateWindow(winsys->dpy, root, x, y, width, height, 0,
+         vinfo->depth, InputOutput, vinfo->visual, mask, &attrs);
+   XFree(vinfo);
+
+   if (!win)
+      return None;
+
+   /* set hints and properties */
+   {
+      XSizeHints sizehints;
+      sizehints.x = x;
+      sizehints.y = y;
+      sizehints.width  = width;
+      sizehints.height = height;
+      sizehints.flags = USSize | USPosition;
+      XSetNormalHints(winsys->dpy, win, &sizehints);
+      XSetStandardProperties(winsys->dpy, win, name, name,
+                             None, (char **)NULL, 0, &sizehints);
+   }
+
+   XMapWindow(winsys->dpy, win);
+
+   return win;
+}
+
+static void
+x11_destroy_window(struct segl_winsys *winsys, Window win)
+{
+   if (win)
+      XDestroyWindow(winsys->dpy, win);
+}
+
+
+static Pixmap 
+x11_create_pixmap(struct segl_winsys *winsys, EGLint width, EGLint height,
+                  EGLint depth)
+{
+   Window root = DefaultRootWindow(winsys->dpy);
+   Pixmap pix;
+
+   pix = XCreatePixmap(winsys->dpy, (Drawable) root, width, height, depth);
+
+   return pix;
+}
+
+static void
+x11_destroy_pixmap(struct segl_winsys *winsys, Pixmap pix)
+{
+   if (pix)
+      XFreePixmap(winsys->dpy, pix);
+}
+
+static double
+x11_now(struct segl_winsys *winsys)
+{
+   struct timeval tv;
+
+   gettimeofday(&tv, NULL);
+
+   return (double) tv.tv_sec + tv.tv_usec / 1000000.0;
+}
+
+struct segl_winsys *
+segl_get_winsys(EGLNativeDisplayType dpy)
+{
+   struct segl_winsys *winsys;
+
+   winsys = calloc(1, sizeof(*winsys));
+   if (winsys) {
+      winsys->dpy = dpy;
+
+      winsys->create_window = x11_create_window;
+      winsys->destroy_window = x11_destroy_window;
+      winsys->create_pixmap = x11_create_pixmap;
+      winsys->destroy_pixmap = x11_destroy_pixmap;
+
+      winsys->now = x11_now;
+   }
+
+   return winsys;
+}