[Java-game-lib-cvs] SF.net SVN: java-game-lib:[3747] trunk/LWJGL/src/java/org/lwjgl/opengl/ Display.java

[<ka...@us...>]

Revision: 3747
          http://java-game-lib.svn.sourceforge.net/java-game-lib/?rev=3747&view=rev
Author:   kappa1
Date:     2012-03-01 22:34:34 +0000 (Thu, 01 Mar 2012)
Log Message:
-----------
Tweak Display.sync() method a little to reduce the Thread.yield() time even further, now with a minimum of 0 yield time.

Modified Paths:
--------------
    trunk/LWJGL/src/java/org/lwjgl/opengl/Display.java

Modified: trunk/LWJGL/src/java/org/lwjgl/opengl/Display.java
===================================================================
--- trunk/LWJGL/src/java/org/lwjgl/opengl/Display.java	2012-02-29 23:18:35 UTC (rev 3746)
+++ trunk/LWJGL/src/java/org/lwjgl/opengl/Display.java	2012-03-01 22:34:34 UTC (rev 3747)
@@ -86,7 +86,7 @@
 	private static boolean syncInitiated;
 
 	/** adaptive time to yield instead of sleeping in sync()*/
-	private static long adaptiveYieldTime = 1000*1000;
+	private static long adaptiveYieldTime;
 
 	/** X coordinate of the window */
 	private static int x = -1;
@@ -444,12 +444,12 @@
 		
 		// auto tune the amount of time to yield
 		if (overSleep > adaptiveYieldTime) {
-			// increase by 500 microseconds (half a ms)
-			adaptiveYieldTime = Math.min(adaptiveYieldTime + 500*1000, sleepTime);
+			// increase by 200 microseconds (1/5 a ms)
+			adaptiveYieldTime = Math.min(adaptiveYieldTime + 200*1000, sleepTime);
 		}
-		else if (overSleep < adaptiveYieldTime - 1000*1000) {
+		else if (overSleep < adaptiveYieldTime - 200*1000) {
 			// decrease by 5 microseconds
-			adaptiveYieldTime = Math.max(adaptiveYieldTime - 5*1000, 1000*1000);
+			adaptiveYieldTime = Math.max(adaptiveYieldTime - 2*1000, 0);
 		}
 	}
 	

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