Method ReplaceShaderBase

Rendering/VolumeOpenGL2/vtkOpenGLGPUVolumeRayCastMapper.cxx:2366–2401

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//------------------------------------------------------------------------------
void vtkOpenGLGPUVolumeRayCastMapper::ReplaceShaderBase(
  std::map<vtkShader::Type, vtkShader*>& shaders, vtkRenderer* ren, vtkVolume* vol, int numComps)
{
  vtkShader* vertexShader = shaders[vtkShader::Vertex];
  vtkShader* fragmentShader = shaders[vtkShader::Fragment];

  // Every volume should have a property (cannot be nullptr);
  vtkVolumeProperty* volumeProperty = vol->GetProperty();
  int independentComponents = volumeProperty->GetIndependentComponents();

  vtkShaderProgram::Substitute(vertexShader, "//VTK::ComputeClipPos::Impl",
    vtkvolume::ComputeClipPositionImplementation(ren, this, vol));

  vtkShaderProgram::Substitute(vertexShader, "//VTK::ComputeTextureCoords::Impl",
    vtkvolume::ComputeTextureCoordinates(ren, this, vol));

  vtkShaderProgram::Substitute(vertexShader, "//VTK::Base::Dec",
    vtkvolume::BaseDeclarationVertex(ren, this, vol, this->Impl->MultiVolume != nullptr));

  vtkShaderProgram::Substitute(
    fragmentShader, "//VTK::CallWorker::Impl", vtkvolume::WorkerImplementation(ren, this, vol));

  vtkShaderProgram::Substitute(fragmentShader, "//VTK::Base::Dec",
    vtkvolume::BaseDeclarationFragment(ren, this, this->AssembledInputs,
      this->Impl->TotalNumberOfLights, this->Impl->NumberPositionalLights,
      this->Impl->DefaultLighting, numComps, independentComponents));

  vtkShaderProgram::Substitute(fragmentShader, "//VTK::Base::Init",
    vtkvolume::BaseInit(ren, this, this->AssembledInputs, this->Impl->DefaultLighting));

  vtkShaderProgram::Substitute(
    fragmentShader, "//VTK::Base::Impl", vtkvolume::BaseImplementation(ren, this, vol));

  vtkShaderProgram::Substitute(
    fragmentShader, "//VTK::Base::Exit", vtkvolume::BaseExit(ren, this, vol));
}

//------------------------------------------------------------------------------
void vtkOpenGLGPUVolumeRayCastMapper::ReplaceShaderTermination(