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    V-ray questions

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    • E Offline
      edu1987
      last edited by

      how can i get rid of that white spots? im using irradiance as primary and light cache as secondary engine everything else as default settings.


      render.JPG

      always be psycho about perfection

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      • thomthomT Offline
        thomthom
        last edited by

        A quick-fix is to Clamp Colors under Color Mapping.

        Thomas Thomassen — SketchUp Monkey & Coding addict
        List of my plugins and link to the CookieWare fund

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        • soloS Offline
          solo
          last edited by

          Rachid, I cannot seem to find that carpet scene any more, I can give you the maps however, in the zip file is a normal, diffuse, specular and displacement map.


          CARPET.zip

          http://www.solos-art.com

          If you see a toilet in your dreams do not use it.

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          • 2 Offline
            21D
            last edited by

            @solo said:

            Rachid, I cannot seem to find that carpet scene any more, I can give you the maps however, in the zip file is a normal, diffuse, specular and displacement map.

            Just now noticed that you posted Pete,
            thnx for the help,
            having the maps i can play around with them to find as close as result as you mate, so don't worry about the scene 😉
            thank you again for the help mate

            "I prefer drawing to talking. Drawing is faster, and leaves less room for lies."
            Le Corbusier

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            • E Offline
              edu1987
              last edited by

              @solo said:

              I can give you the maps however, in the zip file is a normal, diffuse, specular and displacement map.

              I downloaded the carpet too thks Solo, but what is the carpet773_NORMAL image for? and also were do u put the specular image? In the fresnel color or in the highlight and reflection glossiness there is kind of a debate in that.

              always be psycho about perfection

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              • E Offline
                edu1987
                last edited by

                @thomthom said:

                A quick-fix is to Clamp Colors under Color Mapping.

                Hmm...thought that only worked with colors 😄 will try then thks

                always be psycho about perfection

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                • W Offline
                  wahoowetzel
                  last edited by

                  @edu1987 said:

                  how can i get rid of that white spots? im using irradiance as primary and light cache as secondary engine everything else as default settings.

                  I'm using the same primary and secondary engines and I seem to get these white spots whenever I have the reflection glossiness set to anything less than 1 (lower gets worse I think). What is the cause/solution to this?? I basically just want a material that that is reflective but not like a mirror, is that so hard? 😢

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                  • W Offline
                    wahoowetzel
                    last edited by

                    I've been using vray for 3DS max for about 4 years now, I've been using VfSU for about 2 months and I'm having some issues with graininess. I haven't had this issue with max, so I'm wondering if you guys can help me.

                    I'm looking to get a metal material like a aluminum or steel with a powder coat finish. So something that is reflective, but not like a mirror. I'm modeling mullions and garage doors using this material. Here are some pics of the material in context:
                    test 1.png

                    I know there are a lot of settings that effect the materials and how they render out. I've done a bunch of tests using different environment settings and I've tried several material adjustments. But if any body out there would so kind or interested in helping me out, I set up a test file using the same materials I'm using in my scene.

                    I want to say it's either a shadow related setting in the environment rollouts, or I'm just plain screwing up the material for some reason, either way I could use some help. Thanks!


                    SCF test scene img.png


                    test scene.skp

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                    • V Offline
                      vidy
                      last edited by

                      perhaps something like this (using vray 1.5)

                      It's a bit strange coz, SU can't update the material as seen on my render image, anyway here's the file.


                      metal.jpg


                      test scene.skp

                      still so much to learn..

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                      • W Offline
                        wahoowetzel
                        last edited by

                        Hey thanks for the test. Did you adjust the lighting/shadow settings?

                        The client was happy with the images that I got out. It was not the most design rich project I've worked on, but a great exercise to try out the new vray. There were definitely ALOT of growing pains with the new release, but I have to admit, I'm addicted to the ease of alpha transparency support.

                        Take a look, feedback is more than welcome. I could not have done it without the help of you guys in the forum.


                        Admin Entry.jpg


                        Admin Side.jpg


                        Admin Low.jpg

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                        • V Offline
                          vidy
                          last edited by

                          you're welcome wahoo, yes i thought i was change a bit about physical camera option, hopefully it recorded on my file, coz sometimes vray for su forgot about the setting when we move the file to other computer 😒

                          bytw, is the image you posted originally from the vray su render? well, i think, it will be better if you play a bit on PS (or image editing software) to tweak for brightness and contrast of the image.

                          nice project bro..

                          regards,
                          vidy

                          still so much to learn..

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                          • B Offline
                            BigTom
                            last edited by

                            @thomthom said:

                            A slight variation:
                            Bumpmap: Blend
                            - Texture A: Noise - Size: 50
                            - Texture B: Bulge
                            Blend Ratio: 0.25 (75% Texture A)

                            This just add the slight bulging which you often see in windows.

                            What layer are you placing this bumpmap to? I've looked through this thread and I haven't been able to find it exactly. If there is another thread which explains it I'll gladly go there.

                            http://www.tomsherrillillustrations.com

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                            • thomthomT Offline
                              thomthom
                              last edited by

                              Bump map isn't a layer of its own - but a map applied to the material. Look at the bottom of the material properties in the VfSU editor. You have a bunch of checkboxes and map slots.

                              Thomas Thomassen — SketchUp Monkey & Coding addict
                              List of my plugins and link to the CookieWare fund

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                              • B Offline
                                BigTom
                                last edited by

                                I need to set the UVW Type to UVWGenPlanarWorld for both Texture A and Texture B?

                                For Texture A use the default Noise settings? There are so many I'm a little perplexed by them.

                                Use the default Bulge settings in Texture B?

                                http://www.tomsherrillillustrations.com

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                                • B Offline
                                  BigTom
                                  last edited by

                                  I got it to work! Thanks THomThom - your posts have been a big help and I've gotten closer to mastering this skill.

                                  I'm still left trying to understand all the many parameters available in the materials panels. The TexNoise, TexBlend etc have so many posible variables and the operator manuals I've read don't address them all. (things like amplitude, frequency, persistence, inflection, bias, etc)

                                  Can anyone recommend resources that help to explain the vray materials and texture panels parameters fully?

                                  http://www.tomsherrillillustrations.com

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                                  • thomthomT Offline
                                    thomthom
                                    last edited by

                                    I'm a wee bit confused to all them myself to be honest... 😕 Essentially with the latest release where we have all these new procedural maps.

                                    Thomas Thomassen — SketchUp Monkey & Coding addict
                                    List of my plugins and link to the CookieWare fund

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                                    • B Offline
                                      BigTom
                                      last edited by

                                      UhOh - if you don't know these things it seems that much more daunting!

                                      http://www.tomsherrillillustrations.com

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                                      • thomthomT Offline
                                        thomthom
                                        last edited by

                                        I've been meaning to do some experiments with them. But never got around.
                                        So if you look at them and work out what some of these parameters do - them please post back to the forum. I'd appreciate it.

                                        Thomas Thomassen — SketchUp Monkey & Coding addict
                                        List of my plugins and link to the CookieWare fund

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                                        • N Offline
                                          nicolerouillard
                                          last edited by

                                          @thomthom said:

                                          @solo said:

                                          below is an image of a render in progress, it's a studio setup that has blotchy artifacts in the shadows, how does one overcome it?

                                          In the DMC Sampler section of the Options. Is the adaptive Amount set to 0.85?
                                          You are likely to get splotches if this is set to 1.

                                          Where is the DMC sampler, I have QMC sampler. Is this the same?

                                          N

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                                          • F Offline
                                            fjrentas
                                            last edited by

                                            @unknownuser said:

                                            Where is the DMC sampler, I have QMC sampler. Is this the same?

                                            Then you have a very old version. You need to update your version to the latest one.

                                            http://software.asgvis.com/index.php?option=com_content&view=article&id=253&Itemid=53

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