Cleanup GLArrayData*, misc stuff

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JOGL_2_SANDBOX@1762 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 63 insertions, 0 deletions

diff --git a/src/classes/com/sun/opengl/impl/glsl/GLSLArrayHandler.java b/src/classes/com/sun/opengl/impl/glsl/GLSLArrayHandler.java
new file mode 100644
index 000000000..2910e67bd
--- /dev/null
+++ b/src/classes/com/sun/opengl/impl/glsl/GLSLArrayHandler.java
@@ -0,0 +1,63 @@
+
+package com.sun.opengl.impl.glsl;
+
+import com.sun.opengl.impl.*;
+
+import javax.media.opengl.*;
+import javax.media.opengl.glsl.ShaderState;
+import java.nio.*;
+
+public class GLSLArrayHandler implements GLArrayHandler {
+  private GLArrayData ad;
+
+  public GLSLArrayHandler(GLArrayData ad) {
+    this.ad = ad;
+  }
+
+  protected final void passVertexAttribPointer(GL2ES2 gl, ShaderState st) {
+    if ( ! st.glVertexAttribPointer(gl, ad) ) {
+        throw new RuntimeException("Internal Error");
+    }
+  }
+
+  public void enableBuffer(GL gl, boolean enable) {
+    GL2ES2 glsl = gl.getGL2ES2();
+    ShaderState st = ShaderState.getCurrent();
+    if(null==st) {
+        throw new GLException("No ShaderState current");
+    }
+
+    if(enable) {
+        if(!st.glEnableVertexAttribArray(glsl, ad.getName())) {
+            throw new RuntimeException("Internal Error");
+        }
+
+        Buffer buffer = ad.getBuffer();
+
+        if(ad.isVBO()) {
+            // always bind and refresh the VBO mgr,
+            // in case more than one gl*Pointer objects are in use
+            gl.glBindBuffer(GL.GL_ARRAY_BUFFER, ad.getVBOName());
+            if(!ad.isBufferWritten()) {
+                if(null!=buffer) {
+                    gl.glBufferData(GL.GL_ARRAY_BUFFER, buffer.limit() * ad.getComponentSize(), buffer, ad.getBufferUsage());
+                }
+                ad.setBufferWritten(true);
+            }
+            passVertexAttribPointer(glsl, st);
+        } else if(null!=buffer) {
+            passVertexAttribPointer(glsl, st);
+            ad.setBufferWritten(true);
+        }
+    } else {
+        if(ad.isVBO()) {
+            gl.glBindBuffer(GL.GL_ARRAY_BUFFER, 0);
+        }
+        if(!st.glDisableVertexAttribArray(glsl, ad.getName())) {
+            throw new RuntimeException("Internal Error");
+        }
+    }
+  }
+
+}
+