GLSL DataArray/Handler: Remove ShaderState state and pass it through: ShaderState.getShaderState(gl)

This removes the dependency of a GLSL GLDataArray object to a specific ShaderState
and enables sharing of this VBO data, i.e. via a shared context.

Test: TestSharedContextVBOES2NEWT

1 files changed, 69 insertions, 0 deletions

diff --git a/src/jogl/classes/jogamp/opengl/util/GLArrayHandler.java b/src/jogl/classes/jogamp/opengl/util/GLArrayHandler.java
new file mode 100644
index 000000000..4a570d3a7
--- /dev/null
+++ b/src/jogl/classes/jogamp/opengl/util/GLArrayHandler.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package jogamp.opengl.util;
+
+import javax.media.opengl.*;
+
+/**
+ * Handles consistency of buffer data and array state.
+ * Implementations shall consider buffer types (VBO, ..), interleaved, etc.
+ * They also need to consider array state types, i.e. fixed function or GLSL.
+ */
+public interface GLArrayHandler {
+
+  /**
+   * Implementation shall associate the data with the array
+   * and synchronize the data with the GPU.
+   * 
+   * @param gl current GL object
+   * @param enable true if array data shall be valid, otherwise false.
+   * @param ext extension object allowing passing of an implementation detail 
+   */
+  public void syncData(GL gl, boolean enable, Object ext);
+  
+  /**
+   * Implementation shall enable or disable the array state.
+   * 
+   * @param gl current GL object
+   * @param enable true if array shall be enabled, otherwise false.
+   * @param ext extension object allowing passing of an implementation detail 
+   */
+  public void enableState(GL gl, boolean enable, Object ext);
+  
+  /**
+   * Supporting interleaved arrays, where sub handlers may handle 
+   * the array state and the <i>master</i> handler the buffer consistency.
+   *   
+   * @param handler the sub handler
+   * @throws UnsupportedOperationException if this array handler does not support interleaved arrays
+   */
+  public void addSubHandler(GLArrayHandler handler) throws UnsupportedOperationException;
+
+}
+