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Iray : Interactive vs Photoreal

Noah LGPNoah LGP Posts: 2,617
in The Commons

Hi,

What render mode do you often use with Iray engine ? Interactive or Photoreal ?

Comments

  • richardandtracyrichardandtracy Posts: 7,139
    Only ever use 'Photoreal'. Never actually tried the other. Might have to. Regards, Richard
  • nonesuch00nonesuch00 Posts: 18,729

    I always thought interactive is a dumbing down of photoreal. I've ever only used photoreal or 3DL or filament.

  • PixelSploitingPixelSploiting Posts: 898
    edited June 2022

    Interactive is preview mode for working on scenes. You can see lightning changing in real time without the display stuttering and lagging. The quality isn't good enough for final renders, though. It can produce artifacts with transparencies, for an example.

    Post edited by PixelSploiting on
  • marblemarble Posts: 7,500
    edited June 2022

    PixelSploiting said:

    Interactive is preview mode for working on scenes. You can see lightning changing in real time without the display stuttering and lagging. The quality isn't good enough for final renders, though. It can produce artifacts with transparencies, for an example.

    Are you saying that the IRay viewport preview is Interactive and the render is full quality? Or am I misunderstanding "preview"? I always have IRay in Photoreal mode but I have always thought that the viewport was somewhat less than the photoreal version.

    The thing that slows down the viewport view (even for spot renders) is having to load the geometry and maps each time you switch from OpenGL to IRay view. If I could pose and move characters around with IRay active I would, but it is intolerably slow to work on scenes so I switch back to OpenGL.

    Post edited by marble on
  • PixelSploitingPixelSploiting Posts: 898

    marble said:

    PixelSploiting said:

    Interactive is preview mode for working on scenes. You can see lightning changing in real time without the display stuttering and lagging. The quality isn't good enough for final renders, though. It can produce artifacts with transparencies, for an example.

    Are you saying that the IRay viewport preview is Interactive and the render is full quality? Or am I misunderstanding "preview"? I always have IRay in Photoreal mode but I have always thought that the viewport was somewhat less than the photoreal version.

    The thing that slows down the viewport view (even for spot renders) is having to load the geometry and maps each time you switch from OpenGL to IRay view. If I could pose and move characters around with IRay active I would, but it is intolerably slow to work on scenes so I switch back to OpenGL.

     

    Interactive Iray preview is faster than Photoreal, but it might or might not handle things like subsurface and transparency properly. It's useful for manipulating lights in real time so you can roughly see how lights change the scene.

    From best to lowest quality:  final render>photoreal preview>interactive preview.

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