mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 10:35:42 +00:00
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_interop_internal_BufferTypePicker_h
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#define vtk_m_interop_internal_BufferTypePicker_h
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#include <vtkm/TypeTraits.h>
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#include <vtkm/Types.h>
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#include <vtkm/interop/internal/OpenGLHeaders.h>
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namespace vtkm
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{
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namespace interop
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{
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namespace internal
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{
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namespace detail
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{
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template <typename NumericTag, typename DimensionalityTag>
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static inline VTKM_CONT GLenum BufferTypePickerImpl(NumericTag, DimensionalityTag)
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{
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return GL_ARRAY_BUFFER;
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}
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VTKM_CONT
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static inline GLenum BufferTypePickerImpl(vtkm::TypeTraitsIntegerTag, vtkm::TypeTraitsScalarTag)
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{
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return GL_ELEMENT_ARRAY_BUFFER;
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}
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} //namespace detail
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static inline VTKM_CONT GLenum BufferTypePicker(vtkm::Int32)
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{
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return GL_ELEMENT_ARRAY_BUFFER;
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}
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static inline VTKM_CONT GLenum BufferTypePicker(vtkm::UInt32)
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{
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return GL_ELEMENT_ARRAY_BUFFER;
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}
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static inline VTKM_CONT GLenum BufferTypePicker(vtkm::Int64)
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{
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return GL_ELEMENT_ARRAY_BUFFER;
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}
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static inline VTKM_CONT GLenum BufferTypePicker(vtkm::UInt64)
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{
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return GL_ELEMENT_ARRAY_BUFFER;
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}
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/// helper function that guesses what OpenGL buffer type is the best default
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/// given a primitive type. Currently GL_ELEMENT_ARRAY_BUFFER is used for
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/// integer types, and GL_ARRAY_BUFFER is used for everything else
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///
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template <typename T>
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static inline VTKM_CONT GLenum BufferTypePicker(T)
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{
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using Traits = vtkm::TypeTraits<T>;
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return detail::BufferTypePickerImpl(typename Traits::NumericTag(),
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typename Traits::DimensionalityTag());
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}
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}
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}
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} //namespace vtkm::interop::internal
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#endif //vtk_m_interop_internal_BufferTypePicker_h
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