separated compatibility OpenGL code from TextNode

libs_required/ACG/Scenegraph/TextNode.cc

@@ -246,31 +246,29 @@ createMap() {
 
 void
 TextNode::
-enter(GLState& _state, const DrawModes::DrawMode& /*_drawmode*/) {
+enter(GLState& _state, const DrawModes::DrawMode& _drawmode) {
+  if(_state.compatibilityProfile())
+    enterCompat(_state,_drawmode);
+  else
+  {
   if (text_.empty())
     return;
 
   // store current gl state
   cullFaceEnabled_ = glIsEnabled(GL_CULL_FACE);
-  texture2dEnabled_ = glIsEnabled(GL_TEXTURE_2D);
   blendEnabled_ = glIsEnabled(GL_BLEND);
   depthEnabled_ = glIsEnabled(GL_DEPTH_TEST);
-  alphaTest_ = glIsEnabled(GL_ALPHA_TEST);
-  if (alphaTest_)
-    ACG::GLState::getAlphaFunc(&alphaTestFunc_, &alphaTestValue_);
 
   glGetIntegerv(GL_BLEND_SRC, &blendSrc_);
   glGetIntegerv(GL_BLEND_DST, &blendDest_);
 
   // set texture and drawing states
   ACG::GLState::disable(GL_CULL_FACE);
-  ACG::GLState::enable(GL_TEXTURE_2D);
   ACG::GLState::enable(GL_BLEND);
-  ACG::GLState::enable(GL_ALPHA_TEST);
-  ACG::GLState::alphaFunc(GL_GREATER, 0.2f);
   ACG::GLState::blendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
   if (alwaysOnTop_)
     ACG::GLState::disable(GL_DEPTH_TEST);
+  }
 }
 
 
@@ -280,27 +278,26 @@ enter(GLState& _state, const DrawModes::DrawMode& /*_drawmode*/) {
 
 void
 TextNode::
-leave(GLState& /*_state*/, const DrawModes::DrawMode& /*_drawmode*/) {
+leave(GLState& _state, const DrawModes::DrawMode& _drawmode) {
+  if(_state.compatibilityProfile())
+    leaveCompat(_state, _drawmode);
+  else
+  {
   if (text_.empty())
       return;
 
   // restore the GLState as it was when entering TextNode
   if (cullFaceEnabled_)
     ACG::GLState::enable(GL_CULL_FACE);  
-  if (!texture2dEnabled_)
-    ACG::GLState::disable(GL_TEXTURE_2D);
   if (!blendEnabled_)
     ACG::GLState::disable(GL_BLEND);
   if (depthEnabled_)
     ACG::GLState::enable(GL_DEPTH_TEST);
   else
     ACG::GLState::disable(GL_DEPTH_TEST);  
-  if (!alphaTest_)
-    ACG::GLState::disable(GL_ALPHA_TEST);
-  else
-    ACG::GLState::alphaFunc(alphaTestFunc_, alphaTestValue_);
 
   ACG::GLState::blendFunc(blendSrc_, blendDest_);
+  }
 }
 
 

libs_required/ACG/Scenegraph/TextNode.hh

@@ -131,9 +131,11 @@ public:
 
   /// set texture and drawing states
   void enter(GLState& _state, const DrawModes::DrawMode& _drawmode);
+  void enterCompat(GLState& _state, const DrawModes::DrawMode& _drawmode);
 
   /// restore texture and drawing states
   void leave(GLState& _state, const DrawModes::DrawMode& _drawmode);
+  void leaveCompat(GLState& _state, const DrawModes::DrawMode& _drawmode);
 
   /// set RenderObject for Shader pipeline renderer
   void getRenderObjects(ACG::IRenderer* _renderer, ACG::GLState&  _state , const ACG::SceneGraph::DrawModes::DrawMode&  _drawMode , const ACG::SceneGraph::Material* _mat);

libs_required/ACG/Scenegraph/TextNodeGLCompat.cc

+/*===========================================================================*\
+ *                                                                           *
+ *                              OpenFlipper                                  *
+ *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
+ *           Department of Computer Graphics and Multimedia                  *
+ *                          All rights reserved.                             *
+ *                            www.openflipper.org                            *
+ *                                                                           *
+ *---------------------------------------------------------------------------*
+ * This file is part of OpenFlipper.                                         *
+ *---------------------------------------------------------------------------*
+ *                                                                           *
+ * 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.   *
+ *                                                                           *
+ * 3. Neither the name of the copyright holder nor the names of its          *
+ *    contributors may be used to endorse or promote products derived from   *
+ *    this software without specific prior written permission.               *
+ *                                                                           *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS       *
+ * "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 THE COPYRIGHT HOLDER *
+ * 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.              *
+ *                                                                           *
+\*===========================================================================*/
+
+/*===========================================================================*\
+ *                                                                           *
+ *   $Revision$                                                       *
+ *   $Author$                                                      *
+ *   $Date$                   *
+ *                                                                           *
+\*===========================================================================*/
+
+
+
+
+//=============================================================================
+//
+//  CLASS TextNode - IMPLEMENTATION
+//
+//=============================================================================
+
+
+
+//== INCLUDES =================================================================
+
+#include <ACG/GL/acg_glew.hh>
+
+#include "TextNode.hh"
+#include "../Utils/ImageConversion.hh"
+
+
+//== NAMESPACES ===============================================================
+
+namespace ACG {
+namespace SceneGraph {
+
+
+//== IMPLEMENTATION ==========================================================
+
+void
+TextNode::
+enterCompat(GLState& _state, const DrawModes::DrawMode& /*_drawmode*/) {
+  if (text_.empty())
+    return;
+
+  // store current gl state
+  cullFaceEnabled_ = glIsEnabled(GL_CULL_FACE);
+  texture2dEnabled_ = glIsEnabled(GL_TEXTURE_2D);
+  blendEnabled_ = glIsEnabled(GL_BLEND);
+  depthEnabled_ = glIsEnabled(GL_DEPTH_TEST);
+  //alphaTest_ = glIsEnabled(GL_ALPHA_TEST);
+  if (alphaTest_)
+    ACG::GLState::getAlphaFunc(&alphaTestFunc_, &alphaTestValue_);
+
+  glGetIntegerv(GL_BLEND_SRC, &blendSrc_);
+  glGetIntegerv(GL_BLEND_DST, &blendDest_);
+
+  // set texture and drawing states
+  ACG::GLState::disable(GL_CULL_FACE);
+  ACG::GLState::enable(GL_TEXTURE_2D);
+  ACG::GLState::enable(GL_BLEND);
+  ACG::GLState::enable(GL_ALPHA_TEST);
+  ACG::GLState::alphaFunc(GL_GREATER, 0.2f);
+  ACG::GLState::blendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+  if (alwaysOnTop_)
+    ACG::GLState::disable(GL_DEPTH_TEST);
+}
+
+
+
+//----------------------------------------------------------------------------
+
+
+void
+TextNode::
+leaveCompat(GLState& /*_state*/, const DrawModes::DrawMode& /*_drawmode*/) {
+  if (text_.empty())
+      return;
+
+  // restore the GLState as it was when entering TextNode
+  if (cullFaceEnabled_)
+    ACG::GLState::enable(GL_CULL_FACE);
+  if (!texture2dEnabled_)
+    ACG::GLState::disable(GL_TEXTURE_2D);
+  if (!blendEnabled_)
+    ACG::GLState::disable(GL_BLEND);
+  if (depthEnabled_)
+    ACG::GLState::enable(GL_DEPTH_TEST);
+  else
+    ACG::GLState::disable(GL_DEPTH_TEST);
+  if (!alphaTest_)
+    ACG::GLState::disable(GL_ALPHA_TEST);
+  else
+    ACG::GLState::alphaFunc(alphaTestFunc_, alphaTestValue_);
+
+  ACG::GLState::blendFunc(blendSrc_, blendDest_);
+}
+
+//=============================================================================
+} // namespace SceneGraph
+} // namespace ACG
+//=============================================================================