Method UpdatePBRStateCache

Rendering/OpenGL2/vtkOpenGLLowMemoryPolyDataMapper.cxx:3030–3073

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//------------------------------------------------------------------------------
void vtkOpenGLLowMemoryPolyDataMapper::UpdatePBRStateCache(vtkRenderer*, vtkActor* actor)
{
  bool hasAnisotropy = actor->GetProperty()->GetInterpolation() == VTK_PBR &&
    actor->GetProperty()->GetAnisotropy() != 0.0;
  bool hasClearCoat = actor->GetProperty()->GetInterpolation() == VTK_PBR &&
    actor->GetProperty()->GetCoatStrength() > 0.0;

  std::vector<TextureInfo> textures = this->GetTextures(actor);
  bool usesNormalMap =
    std::find_if(textures.begin(), textures.end(),
      [](const TextureInfo& tex) { return tex.second == "normalTex"; }) != textures.end();
  bool usesCoatNormalMap = this->HasClearCoat &&
    std::find_if(textures.begin(), textures.end(),
      [](const TextureInfo& tex) { return tex.second == "coatNormalTex"; }) != textures.end();
  bool usesRotationMap =
    std::find_if(textures.begin(), textures.end(),
      [](const TextureInfo& tex) { return tex.second == "anisotropyTex"; }) != textures.end();

  if (hasAnisotropy != this->HasAnisotropy)
  {
    this->HasAnisotropy = hasAnisotropy;
    this->PBRStateTimeStamp.Modified();
  }
  if (hasClearCoat != this->HasClearCoat)
  {
    this->HasClearCoat = hasClearCoat;
    this->PBRStateTimeStamp.Modified();
  }
  if (usesNormalMap != this->UsesNormalMap)
  {
    this->UsesNormalMap = usesNormalMap;
    this->PBRStateTimeStamp.Modified();
  }
  if (usesCoatNormalMap != this->UsesCoatNormalMap)
  {
    this->UsesCoatNormalMap = usesCoatNormalMap;
    this->PBRStateTimeStamp.Modified();
  }
  if (usesRotationMap != this->UsesRotationMap)
  {
    this->UsesRotationMap = usesRotationMap;
    this->PBRStateTimeStamp.Modified();
  }
}

//------------------------------------------------------------------------------
void vtkOpenGLLowMemoryPolyDataMapper::UpdateGLSLMods(vtkRenderer*, vtkActor*)