progShader.cpp

Go to the documentation of this file.

/////////////////////////////////////////////////////////////////////
// 6/13/02      Aaron Lefohn    Scientific Computing and Imaging Institute
// School of Computing          University of Utah
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2.1 of the License, or (at your option) any later version.
//
//  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 GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////

#include <state/progShader.h>
#include <iostream>

using namespace std;
using namespace gutz;

using namespace glift;

ProgShader::ProgShader( int numTexUnits, PixelShader* pixShader, TexCoordPerturb* texCoordPerturb )
{
   initMembers( numTexUnits, pixShader, NULL, texCoordPerturb );
}

ProgShader::ProgShader( int numTexUnits, VertexShader* vertShader, TexCoordPerturb* texCoordPerturb )
{
   initMembers( numTexUnits, NULL, vertShader, texCoordPerturb );
}

ProgShader::ProgShader( int numTexUnits, PixelShader* pixShader, VertexShader* vertShader, TexCoordPerturb* texCoordPerturb )
{
   initMembers( numTexUnits, pixShader, vertShader, texCoordPerturb );
}

ProgShader::ProgShader( const ProgShader& rhs )
{
   initMembers(rhs);
}

ProgShader& ProgShader::operator=( const ProgShader& rhs )
{
   if( &rhs != NULL ) {
      initMembers(rhs);
   }
   return *this;
}

ProgShader::~ProgShader()
{}

void ProgShader::initMembers( const ProgShader& rhs )
{
   initMembers( rhs.m_numTexUnits, rhs.m_pixelShader, rhs.m_vertexShader, rhs.m_texCoordPerturb );
}

void ProgShader::initMembers( int numTexUnits, PixelShader*  pixShader, VertexShader* vertShader, 
                             TexCoordPerturb* texCoordPerturb )
{
   m_numTexUnits     = numTexUnits;
   m_pixelShader          = pixShader;
   m_vertexShader         = vertShader;
   m_texCoordPerturb = texCoordPerturb;

   if( m_texCoordPerturb && (m_numTexUnits != m_texCoordPerturb->numTexUnits() )) {
      err() << "initMembers(...) Error:\n"
         << "\tnumTexUnits (" << m_numTexUnits << ") and texCoordPerturb->numTexUnits() (" <<
         m_texCoordPerturb->numTexUnits() << ") do not match.\n";
      exit(1);
   }
}

/// Generate appropriate texture coordinates, taking into account 
/// multiTexturing, texCoordTransforms, and texture contants
MultiTexCoord* ProgShader::genTexCoords( const arrayw2f& rawTexCoord, const vec3f& primScale ) const
{
   if( m_texCoordPerturb == NULL ) {
      return rawTexCoord.empty() ? NULL : new MultiTexCoord( m_numTexUnits, rawTexCoord );
   }
   else {
      return m_texCoordPerturb->genTexCoords( rawTexCoord, primScale );
   }
}

void ProgShader::bindDef()
{
   if( m_vertexShader ) {m_vertexShader->bind();}
   if( m_pixelShader )  {m_pixelShader->bind(); }
}

void ProgShader::releaseDef()
{
   if( m_pixelShader )  {m_pixelShader->release(); }
   if( m_vertexShader ) {m_vertexShader->release();}
}

---

Send questions, comments, and bug reports to: