removed chck for ARB_vertex_buffer_object as it has become part of opengl spec...

removed chck for ARB_vertex_buffer_object as it has become part of opengl spec in version 1.5 and is not listed as extension by some drivers (e.g. all apple drivers)

BasePlugin/RenderInterface.hh

@@ -116,9 +116,6 @@ class RenderInterface {
      * // Collect missing extension
      * QString missing = "";
      *
-     * if ( !glExtensions.contains("GL_ARB_vertex_buffer_object") )
-     *   missing += "Missing Extension GL_ARB_vertex_buffer_object\n";
-     *
      * if ( !glExtensions.contains("GL_ARB_vertex_program") )
      *   missing += "Missing Extension GL_ARB_vertex_program\n";
      *

Core/Core.cc

@@ -1957,15 +1957,9 @@ bool Core::checkOpenGLCapabilities()  {
     missing += tr("No OpenGL support found!\n");
   }
   
-  //Get OpenGL extensions
+  //Get OpenGL extensions not needed, deprecated style .... get rid of it ... soon
   QString glExtensions = QString((const char*)glGetString(GL_EXTENSIONS));
 
-  // Vertex buffer objects used heavily in mesh node and almost all other nodes
-  if ( !glExtensions.contains("GL_ARB_vertex_buffer_object") ) {
-    ok = false; 
-    missing += tr("Your graphics card does not support the GL_ARB_vertex_buffer_object extension!\n");
-  }
-
 
 #else
   QOpenGLContext* context = QOpenGLContext::currentContext();
@@ -1979,14 +1973,6 @@ bool Core::checkOpenGLCapabilities()  {
       ok = false;
       missing += tr("OpenGL Version less then 2.0!\n");
 
-    } else {
-
-      // Check extensions
-      if ( !context->hasExtension("GL_ARB_vertex_buffer_object") ) {
-        missing += "GL_ARB_vertex_buffer_object extension missing\n";
-        ok = false;
-      }
-
     }
 
   } else {

libs_required/ACG/Scenegraph/MeshNode2T.cc

@@ -99,9 +99,6 @@ MeshNodeT(Mesh& _mesh,
 {
  
   /// \todo : Handle vbo not supported
-  if ( ! checkExtensionSupported("GL_ARB_vertex_buffer_object") ) {
-    std::cerr << "Error! Vertex buffer objects are not supported! The meshNode will not work without them!" << std::endl;
-  }
   
   drawMesh_ = new DrawMeshT<Mesh>(mesh_);
 

libs_required/ACG/Scenegraph/MeshNodeDeprecatedT.cc

@@ -411,7 +411,6 @@ update_geometry()
     bbMax_.maximize(mesh_.point(*v_it));
   }
 
-  if (GLEW_ARB_vertex_buffer_object) {
     typedef typename Mesh::Point         Point;
     typedef typename Point::value_type   PointScalar;
     typedef typename Mesh::Normal        Normal;
@@ -543,7 +542,7 @@ update_topology()
     //===================================================================
     faceIndexBufferInitialized_ = false;
 
-    if ( GLEW_ARB_vertex_buffer_object && !indices_.empty() ) {
+    if ( !indices_.empty() ) {
 
       // generate buffer
       if (!face_index_buffer_)  glGenBuffersARB(1,  (GLuint*)  &face_index_buffer_);