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INTERIOR SCENE WITH GI

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  • INTERIOR SCENE WITH GI

    Hi All,
    I can not cope with the grainy cast of light in my render: http://ploader.net/files/a95a82d13d4...42cd38aa1e.jpg

    My settings:
    Image sampler: ADMC 1/100, Treshold 0.01 AA filter Catmul size 1.5
    GI: Mlt 1 sun intensity 1
    Physical Cam: speed 50, F11, ISO200
    Primary engine: IM Mlt 1
    Secondary engine: LC Mlt 0.8
    IM: -3/0 Hsph 150, Samples 40, Col Trshl 0.25, Nor Trshl 0.1, Dist Trshl 0.3 Subdiv Mlt 1.0
    LC: Subdiv 1200, sample size 0.01
    DMC sampler: AA 0.85, Noise 0.002, Min Samples 8, Subdiv Mlt 1.0
    Color Maping: Exponential, Bright Mlt 0.8, Dark 1.0, Gamma 2,2
    Clamp Output - on
    Sub Pixels: - on
    Affect BG - on

    I will be grateful if someone help me solve this problem. I've tried to change many things with the settings but whithout any succes.

  • #2
    Re: INTERIOR SCENE WITH GI

    siemasz, spróbuj zresetować ustawienia i zacznij od nowa , u mnie ta metoda sie sprawdza D:

    Comment


    • #3
      Re: INTERIOR SCENE WITH GI

      try deleting the cristal... just leave the hole of the window...
      i think that the grainy aspect is because of the refraction of the light...
      you could also just delete the refraction layer... try that
      los campeones no nacen, se hacen...

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      • #4
        Re: INTERIOR SCENE WITH GI

        Zwieksz subdivsy slonca vrayowskiego. Powinno pomoc. Jesli dalej problem wystepuje zwieksz subdivsy w refraction layerze szkla przez ktore wpadaja promienie sloneczne. Pozdr.
        "play hard - go pro"

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        • #5
          Re: INTERIOR SCENE WITH GI

          arqestevez1, deleting the glass will not solve the problem because i will do another render from another side of the room and I want to see real glass with all reflections.
          As Architekcik sugested, I have incresed photon sibdiv of sun (to1000) and subdiv of refraction of glass (to 20): http://ploader.net/files/05869612cf5...ff75da434e.jpg
          Whithout effect as U can see, there is also something wrong with the neon light on the celling.

          Comment


          • #6
            Re: INTERIOR SCENE WITH GI

            those setting are extremely high and some time that is not the solution. Try by increasing the LC sample size to .02. You have a bunch of setting that just increase your render time without affect to much the quality of your render.
            ADMC 1/100 too high, use 1/8 or 1/16
            Threshold too low, use .008

            IM -3/0 could be high depending of your resolution. High resolution you can use -4/-1
            HSph 150 to high, use no more than 90.
            Sampler kind of high and you can lose detail. Use 30.
            Color Threshold .25 high, you don have too much variation in color so you don't need more than 0.3
            LC Subdivis 1200 good, sampler size .01 high. use .02 or .015


            Best

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            • #7
              Re: INTERIOR SCENE WITH GI

              Thanks Fernando, it performed the render time much, in deed, but didn't help with grainy casts of light. Some ideas?
              http://ploader.net/files/286b62d5ca7...efec04f56a.jpg

              Comment


              • #8
                Re: INTERIOR SCENE WITH GI

                Hej,

                Jesli te ustawienia nie daja rady to podejrzewam ze cos jest z ustawieniem intensywnosci slonca w GI. Ja zazwyczaj stosuje F w okolicach 5 i wyzsze iso rzedu 400-600 i wtedy zmniejszam intensywnosci slonca, czesto takze zwiekszam ciutke rozmiar slonca aby cienie mialy gladsze krawedzie. Mialem podobny przypadek choc nie na taka skale. tam gdzie slonce padalo bezposrednio tworzyla sie podobna "luna" pikseli, szczegolnie na materialy ktore mialem na posadzce, jakies plytki z refleksja. Sprobuj moze tez pokombinowac, tak jak chlopaki przedemna wspominali ustawieniami szkla przez ktore wpada swiatlo.

                Tak czy inaczej, obstawiam na intensywnosc slonca. Zmien ustawienia kamery jak wyzej i zmniejsz intensywnosc slonca. Sprobuj takze zmienic troche pozycje slonca suwakiem.

                Pzdr

                PS wyjezdzam na urlop (2 tyg) ale jesli nie ogarniesz tego to po powrocie mozesz mi podeslac scene i sprobuje cos podzialac.

                Comment


                • #9
                  Re: INTERIOR SCENE WITH GI

                  Maybe you need to increase the number of shadow samples in your texsky.(Options-Environment-GI Color-texsky)
                  AMD Ryzen 9, RTX 2080Super, ArchiCAD 24, Vectorworks 2020, Sketchup 2021 Pro, Vray Next for Sketchup, Skatter, Twinmotion 2020

                  Comment


                  • #10
                    Re: INTERIOR SCENE WITH GI

                    hi, im also encountering this problem. right now im rendering an interior scene with only GI as light source. my image also looks grainy. ive tried to increase the shadow sub but it didnt help. i tried to use the default settings, but its still the same. so i hope some expert can help us. tnx

                    Comment


                    • #11
                      Re: INTERIOR SCENE WITH GI

                      Yeah, I've tried to change many settings: subdiv of reflecions on the floor, subdiv of the glass (even to 64), I've even incresed the subdiv of the sun to 10000. No changes.

                      Comment


                      • #12
                        Re: INTERIOR SCENE WITH GI

                        Fozzie,
                        I made what U adviced, changed iso to 400, set F to 5, and decresed sun intensity ( to 0.3). Whithout changes, grains are as strong as before.

                        Comment


                        • #13
                          Re: INTERIOR SCENE WITH GI

                          Can you share the model? It would be easier to find the solution I think.
                          AMD Ryzen 9, RTX 2080Super, ArchiCAD 24, Vectorworks 2020, Sketchup 2021 Pro, Vray Next for Sketchup, Skatter, Twinmotion 2020

                          Comment


                          • #14
                            Re: INTERIOR SCENE WITH GI

                            What version of V-Ray you are using?

                            Comment


                            • #15
                              Re: INTERIOR SCENE WITH GI

                              Sorry, but I was away for few days. Here is the scene: http://www.mediafire.com/?bsop7ls59lgsj2f
                              My version of Vray is: 1.48.91

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