type_ops.hpp

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#pragma once
#ifndef OGLPLUS_PROG_VAR_TYPE_OPS_1405052234_HPP
#define OGLPLUS_PROG_VAR_TYPE_OPS_1405052234_HPP

#include <oglplus/fwd.hpp>
#include <oglplus/string/ref.hpp>
#include <oglplus/object/name.hpp>
#include <oglplus/detail/glsl_to_cpp.hpp>

namespace oglplus {

// Tag template that can be used to declare an Uniform from SLDataType
template <oglplus::SLDataType>
struct SLtoCpp;

template <typename T>
struct AdjustProgVar
{
    typedef T BaseType;
    typedef T ValueType;

    inline static BaseType Adjust(ValueType value)
    {
        return value;
    }
};

template <>
struct AdjustProgVar<void>
{
    typedef void BaseType;
};

template <>
struct AdjustProgVar<bool>
{
    typedef GLboolean BaseType;
    typedef bool ValueType;

    inline static BaseType Adjust(ValueType value)
    {
        return value?GL_TRUE:GL_FALSE;
    }
};

template <std::size_t N>
struct AdjustProgVar<oglplus::Vector<bool, N> >
{
    typedef oglplus::Vector<GLboolean, N> BaseType;
    typedef const oglplus::Vector<bool, N>& ValueType;

    inline static BaseType Adjust(ValueType value)
    {
        return BaseType(value);
    }
};

template <oglplus::SLDataType SLType>
struct AdjustProgVar<SLtoCpp<SLType> >
{
    typedef typename aux::GLSL2Cpp<SLType>::Type BaseType;
    typedef BaseType ValueType;

    inline static BaseType Adjust(ValueType value)
    {
        return value;
    }
};

template <>
class ProgVarTypeOps<tag::Uniform>
{
protected:
    static GLenum GetType(ProgramName, GLint location, StrCRef identifier);
};

} // namespace oglplus

#endif // include guard