1 files changed, 22 insertions, 5 deletions

diff --git a/main.c b/main.c
index 69ad117..5cf3fc2 100644
--- a/main.c
+++ b/main.c
@@ -116,15 +116,32 @@ kbdproc(void*)
 	}
 }
 
+enum{ Frameslice = 1000/30 };
 void
 drawproc(void *arg)
 {
 	Channel *c;
-
-	c = arg;
-	for(;;){
-		send(c, nil);
-		sleep(FPS2MS(60));
+	vlong t0, t, dt, tt;
+	int fps;
+ 
+ 	c = arg;
+	fps = 0;
+	tt = 0;
+	t0 = nsec();
+ 	for(;;){
+ 		send(c, nil);
+		t = nsec();
+		dt = t-t0;
+		fps++;
+		tt += dt;
+		if(tt >= 1e9){
+			fprint(2, "fps %d\n", fps);
+			tt = fps = 0;
+		}
+		dt /= 1e6;
+		if(dt < Frameslice)
+ 			sleep(Frameslice - dt);
+		t0 = t;
 	}
 }