Method DisplayFrameBufferAttachment

Rendering/OpenGL2/vtkOpenGLFramebufferObject.cxx:986–1082

------------------------------------------------------------------------------ Description: Display a given attachment for the current framebuffer object.

// Description:
// Display a given attachment for the current framebuffer object.
void vtkOpenGLFramebufferObject::DisplayFrameBufferAttachment(unsigned int uattachment)
{
  GLenum attachment = static_cast<GLenum>(uattachment);

  GLint params;
  glGetFramebufferAttachmentParameteriv(
    GL_FRAMEBUFFER, attachment, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &params);

  vtkOpenGLCheckErrorMacro("after getting FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE");

  switch (params)
  {
    case GL_NONE:
      std::cout << " this attachment is empty" << endl;
      break;
    case GL_TEXTURE:
      glGetFramebufferAttachmentParameteriv(
        GL_FRAMEBUFFER, attachment, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, &params);
      vtkOpenGLCheckErrorMacro("after getting FRAMEBUFFER_ATTACHMENT_OBJECT_NAME");
      std::cout << " this attachment is a texture with name: " << params << endl;
      glGetFramebufferAttachmentParameteriv(
        GL_FRAMEBUFFER, attachment, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL, &params);
      vtkOpenGLCheckErrorMacro("after getting FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL");
      std::cout << " its mipmap level is: " << params << endl;
      glGetFramebufferAttachmentParameteriv(
        GL_FRAMEBUFFER, attachment, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE, &params);
      vtkOpenGLCheckErrorMacro("after getting FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE");
      if (params == 0)
      {
        std::cout << " this is not a cube map texture." << endl;
      }
      else
      {
        std::cout << " this is a cube map texture and the image is contained in face " << params
                  << endl;
      }
#ifdef GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET
      glGetFramebufferAttachmentParameteriv(
        GL_FRAMEBUFFER, attachment, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET, &params);
#endif
      vtkOpenGLCheckErrorMacro("after getting FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET");
      if (params == 0)
      {
        std::cout << " this is not 3D texture." << endl;
      }
      else
      {
        std::cout << " this is a 3D texture and the zoffset of the attached image is " << params
                  << endl;
      }
      break;
    case GL_RENDERBUFFER:
      std::cout << " this attachment is a renderbuffer" << endl;
      glGetFramebufferAttachmentParameteriv(
        GL_FRAMEBUFFER, attachment, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, &params);
      //      this->PrintError("after getting FRAMEBUFFER_ATTACHMENT_OBJECT_NAME");
      std::cout << " this attachment is a renderbuffer with name: " << params << endl;