made sure to flush gl/cl pipelines correctly (-> fixed rare segmentation fault).

1 files changed, 5 insertions, 4 deletions

diff --git a/src/com/mbien/opencl/demos/joglinterop/GLCLInteroperabilityDemo.java b/src/com/mbien/opencl/demos/joglinterop/GLCLInteroperabilityDemo.java
index 8c53dd2..067e113 100644
--- a/src/com/mbien/opencl/demos/joglinterop/GLCLInteroperabilityDemo.java
+++ b/src/com/mbien/opencl/demos/joglinterop/GLCLInteroperabilityDemo.java
@@ -179,10 +179,13 @@ public class GLCLInteroperabilityDemo implements GLEventListener {
 
     public void display(GLAutoDrawable drawable) {
 
-        computeHeightfield();
-
         GL2 gl = drawable.getGL().getGL2();
 
+        // ensure pipeline is clean before doing cl work
+        gl.glFinish();
+
+        computeHeightfield();
+
         gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
         gl.glLoadIdentity();
 
@@ -199,8 +202,6 @@ public class GLCLInteroperabilityDemo implements GLEventListener {
         gl.glDisableClientState(GL2.GL_VERTEX_ARRAY);
 
 //            gl.glBindBuffer(GL2.GL_ARRAY_BUFFER, 0);
-
-        gl.glFinish();
         
     }