##============================================================================
##  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.
##============================================================================

#unconditionally include rendering contexts so that the helper functions
#are around even if rendering isn't enabled
include(VTKmRenderingContexts)

if(NOT VTKm_ENABLE_RENDERING)
  return()
endif()


set(headers
  Actor.h
  AxisAnnotation.h
  AxisAnnotation2D.h
  AxisAnnotation3D.h
  BitmapFont.h
  BitmapFontFactory.h
  BoundingBoxAnnotation.h
  Camera.h
  Canvas.h
  CanvasRayTracer.h
  Color.h
  ColorBarAnnotation.h
  ColorLegendAnnotation.h
  ConnectivityProxy.h
  Cylinderizer.h
  DecodePNG.h # deprecated
  EncodePNG.h # deprecated
  LineRenderer.h
  LineRendererBatcher.h
  MatrixHelpers.h
  Scene.h
  Mapper.h
  MapperCylinder.h
  MapperPoint.h
  MapperQuad.h
  MapperRayTracer.h
  MapperVolume.h
  MapperConnectivity.h
  MapperWireframer.h
  Quadralizer.h
  ScalarRenderer.h
  TextAnnotation.h
  TextAnnotationBillboard.h
  TextAnnotationScreen.h
  TextRenderer.h
  TextRendererBatcher.h
  Texture2D.h
  Triangulator.h
  View.h
  View1D.h
  View2D.h
  View3D.h
  Wireframer.h
  WorldAnnotator.h
  )

set(sources
  Actor.cxx
  AxisAnnotation.cxx
  AxisAnnotation2D.cxx
  AxisAnnotation3D.cxx
  BitmapFont.cxx
  BitmapFontFactory.cxx
  BoundingBoxAnnotation.cxx
  Camera.cxx
  Color.cxx
  ColorBarAnnotation.cxx
  ColorLegendAnnotation.cxx
  LineRenderer.cxx
  Mapper.cxx
  MapperConnectivity.cxx
  Scene.cxx
  TextAnnotation.cxx
  TextAnnotationBillboard.cxx
  TextAnnotationScreen.cxx
  TextRenderer.cxx
  View.cxx
  View1D.cxx
  View2D.cxx
  View3D.cxx
  WorldAnnotator.cxx

  raytracing/Logger.cxx
  raytracing/MeshConnectivityContainers.cxx
  raytracing/TriangleExtractor.cxx
  )

# This list of sources has code that uses devices and so might need to be
# compiled with a device-specific compiler (like CUDA).
set(device_sources
  Canvas.cxx
  CanvasRayTracer.cxx
  ConnectivityProxy.cxx
  LineRendererBatcher.cxx
  MapperCylinder.cxx
  MapperPoint.cxx
  MapperQuad.cxx
  MapperRayTracer.cxx
  MapperVolume.cxx
  MapperWireframer.cxx
  ScalarRenderer.cxx
  TextRendererBatcher.cxx

  internal/RunTriangulator.cxx

  raytracing/BoundingVolumeHierarchy.cxx
  raytracing/Camera.cxx
  raytracing/ChannelBuffer.cxx
  raytracing/ConnectivityTracer.cxx
  raytracing/CylinderExtractor.cxx
  raytracing/CylinderIntersector.cxx
  raytracing/MeshConnectivityBuilder.cxx
  raytracing/QuadExtractor.cxx
  raytracing/QuadIntersector.cxx
  raytracing/RayOperations.cxx
  raytracing/RayTracer.cxx
  raytracing/ScalarRenderer.cxx
  raytracing/ShapeIntersector.cxx
  raytracing/SphereExtractor.cxx
  raytracing/SphereIntersector.cxx
  raytracing/TriangleIntersector.cxx
  raytracing/VolumeRendererStructured.cxx
  )

# the None backend supports not building the opengl version

#-----------------------------------------------------------------------------
vtkm_library(
  NAME vtkm_rendering
  SOURCES ${sources}
  HEADERS ${headers}
  DEVICE_SOURCES ${device_sources}
  )

#-----------------------------------------------------------------------------
target_link_libraries(vtkm_rendering PUBLIC vtkm_filter vtkm_io)
if(UNIX AND NOT APPLE)
  target_link_libraries(vtkm_rendering PRIVATE rt)
endif()

#-----------------------------------------------------------------------------
target_link_libraries(vtkm_rendering PUBLIC vtkm_rendering_gl_context)

if(NOT VTKm_INSTALL_ONLY_LIBRARIES)
  install(TARGETS vtkm_rendering_gl_context
    EXPORT ${VTKm_EXPORT_NAME}
    )
endif()

#-----------------------------------------------------------------------------
add_subdirectory(internal)
add_subdirectory(raytracing)
if (VTKm_ENABLE_TESTING)
  add_subdirectory(testing)
endif ()