Dbe is not required anymore.

diff --git a/st.c b/st.c
index 0ea51d9..979fdc8 100644 (file)
--- a/st.c
+++ b/st.c
@@ -203,7 +203,7 @@ typedef struct {
        Display *dpy;
        Colourmap cmap;
        Window win;
-       XdbeBackBuffer buf;
+       Drawable buf;
        Atom xembed, wmdeletewin;
        XIM xim;
        XIC xic;
@@ -414,6 +414,8 @@ static char *opt_embed = NULL;
 static char *opt_class = NULL;
 static char *opt_font = NULL;
 
+bool usedbe = False;
+
 static char *usedfont = NULL;
 static int usedfontsize = 0;
 
@@ -2500,7 +2502,8 @@ xinit(void) {
                | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
        attrs.colormap = xw.cmap;
 
-       parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
+       parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
+                       XRootWindow(xw.dpy, xw.scr);
        xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
                        xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
                        xw.vis,
@@ -2509,12 +2512,16 @@ xinit(void) {
                        &attrs);
 
        /* double buffering */
-       if(!XdbeQueryExtension(xw.dpy, &major, &minor))
-               die("Xdbe extension is not present\n");
-       xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeBackground);
+       if(XdbeQueryExtension(xw.dpy, &major, &minor)) {
+               xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win,
+                               XdbeBackground);
+               usedbe = True;
+       } else {
+               xw.buf = xw.win;
+       }
 
        /* Xft rendering context */
-       xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
+       xw.draw = XftDrawCreate(xw.dpy, xw.win, xw.vis, xw.cmap);
 
        /* input methods */
        if((xw.xim =  XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
@@ -2822,7 +2829,8 @@ draw(void) {
        XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
 
        drawregion(0, 0, term.col, term.row);
-       XdbeSwapBuffers(xw.dpy, swpinfo, 1);
+       if(usedbe)
+               XdbeSwapBuffers(xw.dpy, swpinfo, 1);
 }
 
 void