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RAS_VAOpenGLRasterizer.cpp

/**
 * $Id: RAS_VAOpenGLRasterizer.cpp,v 1.11 2004/08/10 11:34:12 kester Exp $
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * This program 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
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "RAS_VAOpenGLRasterizer.h"

#ifdef WIN32
#include <windows.h>
#endif // WIN32
#ifdef __APPLE__
#include <OpenGL/gl.h>
#else
#include <GL/gl.h>
#endif

#include "STR_String.h"
#include "RAS_TexVert.h"
#include "MT_CmMatrix4x4.h"
#include "RAS_IRenderTools.h" // rendering text

#include "RAS_GLExtensionManager.h"
      

using namespace bgl;

RAS_VAOpenGLRasterizer::RAS_VAOpenGLRasterizer(RAS_ICanvas* canvas)
:RAS_OpenGLRasterizer(canvas)
{
}



RAS_VAOpenGLRasterizer::~RAS_VAOpenGLRasterizer()
{
}



00069 bool RAS_VAOpenGLRasterizer::Init(void)
{
      
      bool result = RAS_OpenGLRasterizer::Init();
      
      if (result)
      {
            glEnableClientState(GL_VERTEX_ARRAY);
            glDisableClientState(GL_TEXTURE_COORD_ARRAY);
            glEnableClientState(GL_NORMAL_ARRAY);
            glDisableClientState(GL_COLOR_ARRAY);

            glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
      }

      return result;
}



00089 void RAS_VAOpenGLRasterizer::SetDrawingMode(int drawingmode)
{
      m_drawingmode = drawingmode;

            switch (m_drawingmode)
      {
      case KX_BOUNDINGBOX:
            {
            }
      case KX_WIREFRAME:
            {
                  glDisable (GL_CULL_FACE);
                  break;
            }
      case KX_TEXTURED:
            {
            }
      case KX_SHADED:
            {
                  glEnableClientState(GL_COLOR_ARRAY);
            }
      case KX_SOLID:
            {
                  break;
            }
      default:
            {
            }
      }
}



00122 void RAS_VAOpenGLRasterizer::Exit()
{
      glDisableClientState(GL_VERTEX_ARRAY);
      glDisableClientState(GL_TEXTURE_COORD_ARRAY);
      glDisableClientState(GL_COLOR_ARRAY);
      glDisableClientState(GL_NORMAL_ARRAY);

      RAS_OpenGLRasterizer::Exit();
}



00134 void RAS_VAOpenGLRasterizer::IndexPrimitives( const vecVertexArray& vertexarrays,
                                          const vecIndexArrays & indexarrays,
                                          int mode,
                                          class RAS_IPolyMaterial* polymat,
                                          class RAS_IRenderTools* rendertools,
                                          bool useObjectColor,
                                          const MT_Vector4& rgbacolor)
{
      unsigned char* mypointer=NULL;
      static const GLsizei vtxstride = sizeof(RAS_TexVert);
      GLenum drawmode;
      switch (mode)
      {
      case 0:
            {
            drawmode = GL_TRIANGLES;
            break;
            }
      case 2:
            {
            drawmode = GL_QUADS;
            break;
            }
      case 1:     //lines
            {
            }
      default:
            {
            drawmode = GL_LINES;
            break;
            }
      }
      const RAS_TexVert* vertexarray;
      unsigned int numindices, vt;
      if (drawmode != GL_LINES)
      {
            if (useObjectColor)
            {
                  glDisableClientState(GL_COLOR_ARRAY);
                  glColor4d(rgbacolor[0], rgbacolor[1], rgbacolor[2], rgbacolor[3]);
            } else
            {
                  glColor4d(0,0,0,1.0);
                  glEnableClientState(GL_COLOR_ARRAY);
            }
      }
      else
      {
            glColor3d(0,0,0);
      }
      // use glDrawElements to draw each vertexarray
      for (vt=0;vt<vertexarrays.size();vt++)
      {
            vertexarray = &((*vertexarrays[vt]) [0]);
            const KX_IndexArray & indexarray = (*indexarrays[vt]);
            numindices = indexarray.size();
            int numverts = vertexarrays[vt]->size();

            if (!numindices)
                  continue;
            
            glVertexPointer(3,GL_FLOAT,vtxstride,vertexarray->getLocalXYZ());
            glTexCoordPointer(2,GL_FLOAT,vtxstride,vertexarray->getUV1());
            glColorPointer(4,GL_UNSIGNED_BYTE,vtxstride,vertexarray->getRGBA());
            glNormalPointer(GL_FLOAT,vtxstride,vertexarray->getNormal());
            //glLockArraysEXT(0,numverts);
            // here the actual drawing takes places
            glDrawElements(drawmode,numindices,GL_UNSIGNED_SHORT,&(indexarray[0]));
            //glUnlockArraysEXT();
      }
}


void RAS_VAOpenGLRasterizer::EnableTextures(bool enable)
{
      if (enable)
            glEnableClientState(GL_TEXTURE_COORD_ARRAY);
      else
            glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}


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