Clarify Bug 692: Unbinding a VAO does _not_ imply unbinding of set VBOs (spec doesn't mention it, and it does not show results w/ CPU sourced rendering) ; Clean up GLBuffer*Tracker

+ * Note that VAO initialization does unbind the VBO .. since otherwise they are still bound
+ * and the CPU_SRC test will fail!<br/>
+ * The OpenGL spec does not mention that unbinding a VAO will also unbind the bound VBOs
+ * during their setup.<br/>
+ * Local tests here on NV and AMD proprietary driver resulted in <i>no ourput image</i>
+ * when not unbinding said VBOs before the CPU_SRC tests.<br/>
+ * Hence Bug 692 Comment 5 is invalid, i.e. <https://jogamp.org/bugzilla/show_bug.cgi?id=692#c5>,
+ * and we should throw an exception to give users a hint!

Leaving uncommented code in GLBufferStateTracker ..

+++

- Clean up GLBuffer*Tracker
  - Use final
  - Use static final keyNotFound value.

2 files changed, 2 insertions, 2 deletions

diff --git a/make/config/jogl/gl-impl-CustomJavaCode-gl4bc.java b/make/config/jogl/gl-impl-CustomJavaCode-gl4bc.java
index 30047278b..e7389de10 100644
--- a/make/config/jogl/gl-impl-CustomJavaCode-gl4bc.java
+++ b/make/config/jogl/gl-impl-CustomJavaCode-gl4bc.java
@@ -314,7 +314,7 @@ private final boolean checkBufferObject(boolean extensionAvail,
         return true;
     }
     if ( allowVAO ) {
-        buffer = bufferStateTracker.getBoundBufferObject(GL2GL3.GL_VERTEX_ARRAY_BINDING, this);
+        buffer = bufferStateTracker.getBoundBufferObject(GL2ES3.GL_VERTEX_ARRAY_BINDING, this);
         if( 0 != buffer && _context.getDefaultVAO() != buffer ) {
             return true;
         }
diff --git a/make/config/jogl/gl-impl-CustomJavaCode-gles3.java b/make/config/jogl/gl-impl-CustomJavaCode-gles3.java
index 83bdd7691..1a1d7abe3 100644
--- a/make/config/jogl/gl-impl-CustomJavaCode-gles3.java
+++ b/make/config/jogl/gl-impl-CustomJavaCode-gles3.java
@@ -235,7 +235,7 @@ private final boolean checkBufferObject(boolean extensionAvail,
         return true;
     }
     if ( allowVAO ) {
-        buffer = bufferStateTracker.getBoundBufferObject(GLES3.GL_VERTEX_ARRAY_BINDING, this);
+        buffer = bufferStateTracker.getBoundBufferObject(GL2ES3.GL_VERTEX_ARRAY_BINDING, this);
         if( 0 != buffer && _context.getDefaultVAO() != buffer ) {
             return true;
         }