Refactorings to support building JOGL for OpenGL ES 1 and OpenGL ES 2.

"ant -Djogl.es1=1" builds JOGL for OpenGL ES 1.
"ant -Djogl.es2=1" builds JOGL for OpenGL ES 2.
"ant" builds JOGL for desktop OpenGL (2.1).
Building desktop OpenGL is currently broken (FIXME) -- more
refactorings are necessary.
When compiling, it is currently necessary to specify
-Djogl.noglnatives=1 on the ant command line as well, because the
generated native code does not link properly since we do not have
OpenGL ES libraries on the desktop. Building the generated native code
using a cross-compiler is not yet hooked up into the ant build
mechanism. It is necessary to build the generated native code with
external tools.
Also incorporated spatialized audio framework using Windows waveOut
device; this is a temporary measure until a different workspace can be
found for this code.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JOGL_2_SANDBOX@1630 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 38 insertions, 0 deletions

diff --git a/make/glu-CustomJavaCode-gles2.java b/make/glu-CustomJavaCode-gles2.java
new file mode 100755
index 000000000..dc036ac1a
--- /dev/null
+++ b/make/glu-CustomJavaCode-gles2.java
@@ -0,0 +1,38 @@
+/**
+ * Instantiates a new OpenGL Utility Library object. A GLU object may
+ * be instantiated at any point in the application and is not
+ * inherently tied to any particular OpenGL context; however, the GLU
+ * object may only be used when an OpenGL context is current on the
+ * current thread. Attempts to call most of the methods in the GLU
+ * library when no OpenGL context is current will cause an exception
+ * to be thrown.
+ *
+ * <P>
+ *
+ * The returned GLU object is not guaranteed to be thread-safe and
+ * should only be used from one thread at a time. Multiple GLU objects
+ * may be instantiated to be used from different threads
+ * simultaneously.
+ */
+
+public GLU()
+{
+}
+
+//----------------------------------------------------------------------
+// Utility routines
+//
+
+/**
+ * Returns the GL object associated with the OpenGL context current on
+ * the current thread. Throws GLException if no OpenGL context is
+ * current.
+ */
+
+public static GL getCurrentGL() throws GLException {
+  GLContext curContext = GLContext.getCurrent();
+  if (curContext == null) {
+    throw new GLException("No OpenGL context current on this thread");
+  }
+  return curContext.getGL();
+}