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3dsMax Vray to UE4 via Datasmith = lights too bright

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    #16
    well I have the same trouble with vray lights, and theres no sense, but lower intensity to 1 or 0 changes nothing
    Last edited by Polyegor; 10-18-2018, 05:27 AM.

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      #17
      I'm having the same problem still with 4.21. None of the intensity settings on the Light BP have any effect. It also imports a second skysphere, but even after deleting this the lights are way too bright. We have had to recreate all our lights in UE.

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        #18
        Originally posted by Furcifer View Post
        I'm having the same problem still with 4.21. None of the intensity settings on the Light BP have any effect. It also imports a second skysphere, but even after deleting this the lights are way too bright. We have had to recreate all our lights in UE.
        I thought they would fix this in 4.21. Oh boy...

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          #19
          Any news about this issue? I'm still having the same issue when importing with datasmith, but even if I uncheck the visible toggle in the world outliner tab, my object still seem super overexposed, any ideas?

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            #20
            Hi all.

            This issue has been fixed internally, but not in time for the 4.21 release; and the change cannot be implemented in hotfixes. This fix will be included in the future 4.22 release.

            Cheers
            Stephen Ellis | Senior Engine Coordinator

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              #21
              I have same issue, but i found what cause this effect in my chase. 1. Use candelas or unitless In 3ds max 2. In detail panel datasmith light bp, select point light component and in detail panel uncheck "Use IES Intensity"
               
              Spoiler
              Last edited by FastD; 12-07-2018, 10:53 AM.

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                #22
                In 4.21 you can use this new parameter:

                https://www.screencast.com/t/b48Tsb7zdH

                This will auto range the exposure to wider luminances.
                Pierre-Felix Breton

                Sr Technical Product Designer AEC, Unreal Engine
                Epic Games - LinkedIn

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                  #23
                  I'm having the same issue, but the above parameter doesn't seem to make a difference.

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                    #24
                    Originally posted by pf_breton View Post
                    In 4.21 you can use this new parameter:

                    https://www.screencast.com/t/b48Tsb7zdH

                    This will auto range the exposure to wider luminances.

                    I haven't had luck with this parameter either. Is there any other way to control the DatasmithAreaLightMesh? Even with the new parameter check and all intensities set to 0, they still look like extremely bright light emissions.

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                      #25
                      Having this issue, very irritating and not something that seems to happen in tutorials. Coming from vray and max. Any ideas how to fix this

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                        #26
                        I'm curious about something: If the emissions issue were solved, are you all happy with the Vray light translation? If so, can you share what Vray lights you are using for your scenes?

                        Nearly all of our work is office interiors, and the Vray lights I use are always large mesh or rectangular. These still translate very poorly from a shape and direction standpoint (hyper bright emission as well), and I've just accepted the fact that it's faster (and far better) to quickly place Unreal lights around the scene. As we grow more comfortable and start to formally adopt Unreal Studio into our workflow, we will save a step and just stop building lights in Vray anyway. My goal is to totally get away from CPU based traditional rendering. I just can't imagine a future Datasmith release that will manage to adequately replicate Vray lighting. For instance, why does a standard Vray rectangular light translate into a spotlight with Datasmith - that is also throwing light up onto the ceiling? Why can't it simply use a rectangular Unreal light? Bizarre!

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                          #27
                          There will be big improvements in VRay lighting support in 4.22. We'll address many of the common problems, including using the new area light feature introduced in 4.20
                          Sr. Product Manager
                          Epic Games

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                            #28
                            We are currently working on fixing Bright light issues
                            Marie-Claude Jutras
                            Product Specialist LinkedIn
                            Unreal Studio
                            Report Issue Here
                            Studio Release Notes

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                              #29
                              Looking forward to the coming fixes for Vray imports as most of my arch vis work is in Vray + 3ds Max

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                                #30
                                Is this vray light problem already fixed?

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