[Java-game-lib-cvs] SF.net SVN: java-game-lib:[3754] trunk/LWJGL/src/java/org/lwjgl/opengl/ Display.java

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

Revision: 3754
          http://java-game-lib.svn.sourceforge.net/java-game-lib/?rev=3754&view=rev
Author:   kappa1
Date:     2012-03-21 19:34:51 +0000 (Wed, 21 Mar 2012)
Log Message:
-----------
Display.sync() fix excessive CPU using on windows

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	2012-03-19 22:12:38 UTC (rev 3753)
+++ trunk/LWJGL/src/java/org/lwjgl/opengl/Display.java	2012-03-21 19:34:51 UTC (rev 3754)
@@ -451,8 +451,12 @@
 				// increase by 200 microseconds (1/5 a ms)
 				adaptiveYieldTime = Math.min(adaptiveYieldTime + 200*1000, sleepTime);
 			}
+			else if (overSleep < adaptiveYieldTime - 2*1000*1000) {
+				// fast decrease by 50 microseconds for large under sleeps
+				adaptiveYieldTime = Math.max(adaptiveYieldTime - 50*1000, 0);
+			}
 			else if (overSleep < adaptiveYieldTime - 200*1000) {
-				// decrease by 5 microseconds
+				// slower but finer decrease by 2 microseconds
 				adaptiveYieldTime = Math.max(adaptiveYieldTime - 2*1000, 0);
 			}
 		}

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