Added osg::Capability and Cabibilityi base classes to wrap up glEnable/glDisable + glEnablei/glDisablei functionality, with osg::Enablei and osg::Disablei concrete implementations.

git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14564 16af8721-9629-0410-8352-f15c8da7e697

src/osg/CMakeLists.txt

@@ -43,6 +43,7 @@ SET(TARGET_H
     ${HEADER_PATH}/Callback
     ${HEADER_PATH}/Camera
     ${HEADER_PATH}/CameraView
+    ${HEADER_PATH}/Capability
     ${HEADER_PATH}/ClampColor
     ${HEADER_PATH}/ClearNode
     ${HEADER_PATH}/ClipNode
@@ -239,6 +240,7 @@ SET(TARGET_SRC
     BufferIndexBinding.cpp
     BufferObject.cpp
     Callback.cpp
+    Capability.cpp
     Camera.cpp
     CameraView.cpp
     ClampColor.cpp

src/osg/Capability.cpp

@@ -0,0 +1,72 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 Robert Osfield
+ *
+ * This library is open source and may be redistributed and/or modified under
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * OpenSceneGraph Public License for more details.
+*/
+
+#include <osg/Capability>
+#include <osg/GLExtensions>
+#include <osg/State>
+
+using namespace osg;
+
+
+Capability::Capability():
+    _capability(0)
+{
+}
+
+Capability::~Capability()
+{
+}
+
+
+Capabilityi::Extensions::Extensions(unsigned int contextID)
+{
+    setGLExtensionFuncPtr(glEnablei, "glEnablei");
+    setGLExtensionFuncPtr(glDisablei, "glDisablei");
+}
+
+Capabilityi::Capabilityi():
+    _index(0)
+{
+}
+
+Capabilityi::~Capabilityi()
+{
+}
+
+void Enablei::apply(State& state) const
+{
+    const Extensions* extensions = state.get<Extensions>();
+    if (extensions->glEnablei)
+    {
+        OSG_NOTICE<<"extensions->glEnablei("<<_capability<<", "<<_index<<")"<<std::endl;
+        extensions->glEnablei(_capability, static_cast<GLuint>(_index));
+    }
+    else
+    {
+        OSG_WARN<<"Warning: Enablei::apply(..) failed, Enablei is not support by OpenGL driver."<<std::endl;
+    }
+}
+
+void Disablei::apply(State& state) const
+{
+    const Extensions* extensions = state.get<Extensions>();
+    if (extensions->glDisablei)
+    {
+        OSG_NOTICE<<"extensions->glDisablei("<<_capability<<", "<<_index<<")"<<std::endl;
+        extensions->glDisablei(_capability, static_cast<GLuint>(_index));
+    }
+    else
+    {
+        OSG_WARN<<"Warning: Enablei::apply(..) failed, Enablei is not support by OpenGL driver."<<std::endl;
+    }
+}