X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=st.c;h=f4ad23d21497d7d3e2ccadef170af3d9e8141aaa;hb=15cc8754c2e272ebac6e86845859816e881da000;hp=2e1ac670b04498445534194f9f38a7cb5f3c55bb;hpb=a62789788c87425fd90209bad15b324f8dee84da;p=st.git

diff --git a/st.c b/st.c
index 2e1ac67..f4ad23d 100644
--- a/st.c
+++ b/st.c
@@ -1970,7 +1970,7 @@ xinit(void) {
 	XSetWindowAttributes attrs;
 	Cursor cursor;
 	Window parent;
-	int sw, sh;
+	int sw, sh, major, minor;
 
 	if(!(xw.dpy = XOpenDisplay(NULL)))
 		die("Can't open display\n");
@@ -2021,9 +2021,10 @@ xinit(void) {
 			CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
 			| CWColormap,
 			&attrs);
+	if(!XdbeQueryExtension(xw.dpy, &major, &minor))
+		die("Xdbe extension is not present\n");
 	xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
 
-
 	/* input methods */
 	xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
 	xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
@@ -2149,6 +2150,7 @@ redraw(void) {
 	struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
 	tfulldirt();
 	draw();
+	XSync(xw.dpy, False); /* necessary for a good tput flash */
 	nanosleep(&tv, NULL);
 }