repair

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JOGL_2_SANDBOX@1872 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 61 insertions, 0 deletions

diff --git a/src/jogl/classes/javax/media/opengl/sub/fixed/GLFixedFuncUtil.java b/src/jogl/classes/javax/media/opengl/sub/fixed/GLFixedFuncUtil.java
new file mode 100644
index 000000000..9c384e934
--- /dev/null
+++ b/src/jogl/classes/javax/media/opengl/sub/fixed/GLFixedFuncUtil.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
+ */
+
+package javax.media.opengl.sub.fixed;
+
+import javax.media.opengl.*;
+import javax.media.opengl.sub.*;
+
+import com.sun.nwi.impl.NWReflection;
+import java.lang.reflect.*;
+
+/**
+ * Tool to pipeline GL2ES2 into a fixed function emulation,
+ * implementing GL2ES1.
+ * The implementation is retrieved by reflection.
+ */
+public class GLFixedFuncUtil {
+    static final Constructor fFuncHookCstr;
+    static final Constructor fFuncImplCstr;
+
+    static {
+        if(NWReflection.isClassAvailable("com.sun.opengl.util.glsl.fixed.FixedFuncHook") &&
+           NWReflection.isClassAvailable("com.sun.opengl.util.glsl.fixed.FixedFuncImpl")) {
+            Class argsHook[] = { javax.media.opengl.GL2ES2.class };
+            Class argsImpl[] = { javax.media.opengl.GL2ES2.class, NWReflection.getClass("com.sun.opengl.util.glsl.fixed.FixedFuncHook") };
+            fFuncHookCstr = NWReflection.getConstructor("com.sun.opengl.util.glsl.fixed.FixedFuncHook", argsHook);
+            fFuncImplCstr = NWReflection.getConstructor("com.sun.opengl.util.glsl.fixed.FixedFuncImpl", argsImpl);
+        } else {
+            fFuncHookCstr=null;
+            fFuncImplCstr=null;
+        }
+    }
+
+    /**
+     * @return If gl is a GL2ES1, return the type cast object,
+     *         otherwise create a FixedFuncImpl pipeline with the GL2ES2 impl.
+     * @throws GLException If this GL Object is neither GL2ES1 nor GL2ES2
+     */
+    public static final GL2ES1 getFixedFuncImpl(GL gl) {
+        if(gl instanceof GL2ES1) {
+            return (GL2ES1)gl;
+        } else if(gl instanceof GL2ES2) {
+            if(null!=fFuncImplCstr) {
+                try {
+                    GL2ES2 es2 = (GL2ES2)gl;
+                    Object fFuncHook = fFuncHookCstr.newInstance( new Object[] { es2 } );
+                    GL2ES1 fFuncImpl = (GL2ES1) fFuncImplCstr.newInstance( new Object[] { es2, fFuncHook } );
+                    gl.getContext().setGL(fFuncImpl);
+                    return fFuncImpl;
+                } catch (Exception e) {
+                    throw new GLException(e);
+                }
+            } else {
+                throw new GLException("GL Object is GL2ES2, but no fixed function impl. available");
+            }
+        }
+        throw new GLException("GL Object is neither GL2ES1 nor GL2ES2");
+    }
+}
+