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-rw-r--r--src/jogl/classes/jogamp/opengl/FPSCounterImpl.java6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/jogl/classes/jogamp/opengl/FPSCounterImpl.java b/src/jogl/classes/jogamp/opengl/FPSCounterImpl.java
index 96d62fbb3..27569d210 100644
--- a/src/jogl/classes/jogamp/opengl/FPSCounterImpl.java
+++ b/src/jogl/classes/jogamp/opengl/FPSCounterImpl.java
@@ -28,6 +28,8 @@
package jogamp.opengl;
import java.io.PrintStream;
+import java.util.concurrent.TimeUnit;
+
import javax.media.opengl.FPSCounter;
/**
@@ -55,7 +57,7 @@ public class FPSCounterImpl implements FPSCounter {
public final synchronized void tickFPS() {
fpsTotalFrames++;
if(fpsUpdateFramesInterval>0 && fpsTotalFrames%fpsUpdateFramesInterval == 0) {
- final long now = System.currentTimeMillis();
+ final long now = TimeUnit.NANOSECONDS.toMillis(System.nanoTime());
fpsLastPeriod = now - fpsLastUpdateTime;
fpsLastPeriod = Math.max(fpsLastPeriod, 1); // div 0
fpsLast = ( (float)fpsUpdateFramesInterval * 1000f ) / ( (float) fpsLastPeriod ) ;
@@ -96,7 +98,7 @@ public class FPSCounterImpl implements FPSCounter {
}
public final synchronized void resetFPSCounter() {
- fpsStartTime = System.currentTimeMillis(); // overwrite startTime to real init one
+ fpsStartTime = TimeUnit.NANOSECONDS.toMillis(System.nanoTime()); // overwrite startTime to real init one
fpsLastUpdateTime = fpsStartTime;
fpsLastPeriod = 0;
fpsTotalFrames = 0;