BufferTypePicker.h

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//============================================================================
//  The contents of this file are covered by the Viskores license. See
//  LICENSE.txt for details.
//
//  By contributing to this file, all contributors agree to the Developer
//  Certificate of Origin Version 1.1 (DCO 1.1) as stated in DCO.txt.
//============================================================================
 
//============================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt for details.
//
//  This software is distributed WITHOUT ANY WARRANTY; without even
//  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
//  PURPOSE.  See the above copyright notice for more information.
//============================================================================
#ifndef viskores_interop_internal_BufferTypePicker_h
#define viskores_interop_internal_BufferTypePicker_h
 
#include <viskores/TypeTraits.h>
#include <viskores/Types.h>
#include <viskores/interop/internal/OpenGLHeaders.h>
 
namespace viskores
{
namespace interop
{
namespace internal
{
 
namespace detail
{
 
template <typename NumericTag, typename DimensionalityTag>
static inline VISKORES_CONT GLenum BufferTypePickerImpl(NumericTag, DimensionalityTag)
{
  return GL_ARRAY_BUFFER;
}
 
VISKORES_CONT
static inline GLenum BufferTypePickerImpl(viskores::TypeTraitsIntegerTag,
                                          viskores::TypeTraitsScalarTag)
{
  return GL_ELEMENT_ARRAY_BUFFER;
}
 
} //namespace detail
 
static inline VISKORES_CONT GLenum BufferTypePicker(viskores::Int32)
{
  return GL_ELEMENT_ARRAY_BUFFER;
}
 
static inline VISKORES_CONT GLenum BufferTypePicker(viskores::UInt32)
{
  return GL_ELEMENT_ARRAY_BUFFER;
}
 
static inline VISKORES_CONT GLenum BufferTypePicker(viskores::Int64)
{
  return GL_ELEMENT_ARRAY_BUFFER;
}
 
static inline VISKORES_CONT GLenum BufferTypePicker(viskores::UInt64)
{
  return GL_ELEMENT_ARRAY_BUFFER;
}
 
template <typename T>
static inline VISKORES_CONT GLenum BufferTypePicker(T)
{
  using Traits = viskores::TypeTraits<T>;
  return detail::BufferTypePickerImpl(typename Traits::NumericTag(),
                                      typename Traits::DimensionalityTag());
}
}
}
} //namespace viskores::interop::internal
 
#endif //viskores_interop_internal_BufferTypePicker_h