Method DetachShader

Rendering/OpenGL2/vtkShaderProgram.cxx:306–427

}

bool vtkShaderProgram::DetachShader(const vtkShader* shader)
{
  if (shader->GetHandle() == 0)
  {
    this->Error = "Shader object was not initialized, cannot attach it.";
    return false;
  }
  if (shader->GetType() == vtkShader::Unknown)
  {
    this->Error = "Shader object is of type Unknown and cannot be used.";
    return false;
  }
  if (this->Handle == 0)
  {
    this->Error = "This shader prorgram has not been initialized yet.";
  }

  switch (shader->GetType())
  {
    case vtkShader::Vertex:
      if (this->VertexShaderHandle != shader->GetHandle())
      {
        Error = "The supplied shader was not attached to this program.";
        return false;
      }
      else
      {
        glDetachShader(static_cast<GLuint>(this->Handle), static_cast<GLuint>(shader->GetHandle()));
        this->VertexShaderHandle = 0;
        this->Linked = false;
        return true;
      }
    case vtkShader::Fragment:
      if (this->FragmentShaderHandle != shader->GetHandle())
      {
        this->Error = "The supplied shader was not attached to this program.";
        return false;
      }
      else
      {
        glDetachShader(static_cast<GLuint>(this->Handle), static_cast<GLuint>(shader->GetHandle()));
        this->FragmentShaderHandle = 0;
        this->Linked = false;
        return true;
      }
    case vtkShader::Geometry:
#ifdef GL_GEOMETRY_SHADER
      if (this->GeometryShaderHandle != shader->GetHandle())
      {
        this->Error = "The supplied shader was not attached to this program.";
        return false;
      }
      else
      {
        glDetachShader(static_cast<GLuint>(this->Handle), static_cast<GLuint>(shader->GetHandle()));
        this->GeometryShaderHandle = 0;
        this->Linked = false;
        return true;