ShKernelLib.hpp

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// Sh: A GPU metaprogramming language.
//
// Copyright (c) 2003 University of Waterloo Computer Graphics Laboratory
// Project administrator: Michael D. McCool
// Authors: Zheng Qin, Stefanus Du Toit, Kevin Moule, Tiberiu S. Popa,
//          Bryan Chan, Michael D. McCool
// 
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// 
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 
// 1. The origin of this software must not be misrepresented; you must
// not claim that you wrote the original software. If you use this
// software in a product, an acknowledgment in the product documentation
// would be appreciated but is not required.
// 
// 2. Altered source versions must be plainly marked as such, and must
// not be misrepresented as being the original software.
// 
// 3. This notice may not be removed or altered from any source
// distribution.
#ifndef SHUTIL_KERNELLIB_HPP 
#define SHUTIL_KERNELLIB_HPP 

#include <string>
#include "ShLib.hpp"
#include "ShMatrix.hpp"
#include "ShTexture.hpp"
#include "ShProgram.hpp"

namespace ShUtil {

using namespace SH;

class ShKernelLib {
  private:
    // returns the string prefix concatenated with index
    static std::string makeName(std::string prefix, int index); 

  public:

    static ShProgram outputPass( const ShProgram &p );

    static ShProgram inputPass( const ShProgram &p );

    static ShProgram shChangeBasis(std::string name="vec", 
        std::string b0Name="b0", std::string b1Name="b1", std::string b2Name="b2"); 

    // TODO make a version of this with names like RenderMan globals
    // make a version with names like Houdini globals

    template<int N, ShBindingType Binding, typename T>
    static ShProgram shVsh(const ShMatrix<N, N, Binding, T> &mv,
                           const ShMatrix<N, N, Binding, T> &mvp,
                           int numTangents = 0, int numLights = 1); 
};

}

#include "ShKernelLibImpl.hpp"

#endif

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