yanligoth Posted March 11, 2019 Share Posted March 11, 2019 (edited) I’m combining V-Ray passes with the formula provided: (VRayDiffuseFilter x (VRayRawLighting + VRayRawGlobalIllumination)) + (VRayRawReflection x VRayReflectionFilter) + (VRayRawRefraction x VRayRefractionFilter) + VRaySpecular1 + VRaySSS2 + VRaySelfIllumination + VRayCaustics + VRayAtmosphere + VRayBackground = RGB_Color (Beauty) However, it doesn’t look the same as the beauty. Any help? Linear workflow. Environment settings are attached. If you want to look at the image dropbox exr here Nuke script on dropbox after some digging, I've found out, if I boost light output in raw passes by 7, I would get a lose match in terms of light output, however, it's not the same around the edges and reflection is vastly different GI [ATTACH=CONFIG]56619[/ATTACH][ATTACH=CONFIG]56621[/ATTACH] Lighting [ATTACH=CONFIG]56620[/ATTACH][ATTACH=CONFIG]56622[/ATTACH] Reflection [ATTACH=CONFIG]56623[/ATTACH][ATTACH=CONFIG]56625[/ATTACH] Refraction [ATTACH=CONFIG]56624[/ATTACH][ATTACH=CONFIG]56626[/ATTACH] Edited March 14, 2019 by yanligoth more help Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 12, 2019 Share Posted March 12, 2019 You don't need the raw... you could MAYBE make use of them in small ways, but for every raw you need a filter and it becomes a lot to manage. If you want to composite the passes you need the following: Global Illumination Lighting Reflection Refraction Specular Self Illumination Atmosphere Background None of those are to be the RAW version and the last 3 are not necessary if you are not using those things in the render. Then, in Photoshop, Using 32-Bit you composite: GI pass = Normal Lighting = Linear Dodge Reflection = Linear Dodge Refraction = Linear Dodge Specular = Linear Dodge Self Illumination = Linear Dodge Atmosphere = Linear Dodge Background = Linear Dodge Only notes on that is that for all Refractive objects you will want to use the material setting of Color+Alpha instead of All Channels otherwise your refractions will be over-bright and that you cannot use a Burn Value other than 1.0. You can adjust the burn, but that will not be baked into passes and the 32-bit comp will be as if you had no burn value so no need to bother in the first place. **PS just realizing that you are using Nuke in which case all hold true though you will Merge A over B using Plus blending mode instead of Linear Dodge. Link to comment Share on other sites More sharing options...
yanligoth Posted March 12, 2019 Author Share Posted March 12, 2019 (edited) Are you saying it's not possible to do it with RAW passes? Otherwise I am following the procedure you describe, maybe the problem is in those refractions? I'll test your proposal. Edited March 12, 2019 by yanligoth Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 12, 2019 Share Posted March 12, 2019 It is possible it is just excessive. I'm not going to download your links (sorry) and it is clear you have read this: https://docs.chaosgroup.com/display/VRAY3MAX/Beauty+%7C+RGB_Color but yeah, purhaps it is the refractions stuff. In the material settings for your refractive materials, usually glass, there is a setting "Affect Channels" that you should use the dropdown to select Color+Alpha. Link to comment Share on other sites More sharing options...
akshayarora Posted March 13, 2019 Share Posted March 13, 2019 The composition of passes are always assembled according to the desired output, there may be times when you need to copy some passes twice or you might reduce/mask some for reducing the impact. We do use passes for betterment which might not match the beauty pass, because if it has to match the beauty pass only then why would someone kill time for using the passes. Link to comment Share on other sites More sharing options...
akshayarora Posted March 13, 2019 Share Posted March 13, 2019 The composition of passes are always assembled according to the desired output, there may be times when you need to copy some passes twice or you might reduce/mask some for reducing the impact. We do use passes for betterment which might not match the beauty pass, because if it has to match the beauty pass only then why would someone kill time for using the passes. Link to comment Share on other sites More sharing options...
yanligoth Posted March 13, 2019 Author Share Posted March 13, 2019 (edited) The composition of passes are always assembled according to the desired output, there may be times when you need to copy some passes twice or you might reduce/mask some for reducing the impact. We do use passes for betterment which might not match the beauty pass, because if it has to match the beauty pass only then why would someone kill time for using the passes. Addition of all passes must match the beauty, of course then some passes can be adjusted for desired output, but as a starting point it should not defer from the original beauty. You rarely have to change the whole image but maybe just a part of one pass...well..if everything else doesn't match the beauty, you're in trouble. Edited March 13, 2019 by yanligoth Link to comment Share on other sites More sharing options...
yanligoth Posted March 13, 2019 Author Share Posted March 13, 2019 It is possible it is just excessive. I'm not going to download your links (sorry) and it is clear you have read this: https://docs.chaosgroup.com/display/VRAY3MAX/Beauty+%7C+RGB_Color but yeah, purhaps it is the refractions stuff. In the material settings for your refractive materials, usually glass, there is a setting "Affect Channels" that you should use the dropdown to select Color+Alpha. It did not help, same result. However, rebuilding using the base formula (the one you recommended) works as expected. I'm still looking for a tip on how to make it work using an advanced back to beauty formula. Link to comment Share on other sites More sharing options...
yanligoth Posted March 14, 2019 Author Share Posted March 14, 2019 after some digging, I've found out, if I boost light output in raw passes by 7, I would get a lose match in terms of light output, however, it's not the same around the edges and reflection is vastly different GI Lighting Reflection Refraction Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 14, 2019 Share Posted March 14, 2019 I wonder if Nuke is looking for some sort of PreComp of the Multiplications of Filter and Raw passes before they get Added? My Nuke skills are far less than my Photoshop, but I know often times it's a technical "switch" that can make the difference. Link to comment Share on other sites More sharing options...
yanligoth Posted March 14, 2019 Author Share Posted March 14, 2019 I'm not sure but I get the same results in After Effects Link to comment Share on other sites More sharing options...
Francisco Penaloza Posted March 14, 2019 Share Posted March 14, 2019 If you are using the RAW passes, you need to compare to the Beauty pass at Gamma 1.0 Photoshop will adjust the curve when you open files. If you open those files in NUKE or Fusion then they will load at Gamma 1.0, then do your mix and then apply a gamma of 2.2 to get your final image. Be sure of applying what Corey mentioned about the transparent or refractive object. It is not necessary to use the RAW passes to get "good results' that's why Chaos group give you the option of having the passes already combined to speed up the process. But if you want to use one RAW pass, be sure to use all of them, Save everything as EXR gamma 1.0 and you should be fine. Link to comment Share on other sites More sharing options...
yanligoth Posted March 15, 2019 Author Share Posted March 15, 2019 If you are using the RAW passes, you need to compare to the Beauty pass at Gamma 1.0 Photoshop will adjust the curve when you open files. If you open those files in NUKE or Fusion then they will load at Gamma 1.0, then do your mix and then apply a gamma of 2.2 to get your final image. Be sure of applying what Corey mentioned about the transparent or refractive object. It is not necessary to use the RAW passes to get "good results' that's why Chaos group give you the option of having the passes already combined to speed up the process. But if you want to use one RAW pass, be sure to use all of them, Save everything as EXR gamma 1.0 and you should be fine. I'm pretty sure I have all materials set to Color + Alpha and I am outputting gamma 1.0 but still it does not match, I'll try photoshop but I'm sure the result will be the same, can you spot any mistakes in my settings? Link to comment Share on other sites More sharing options...
yanligoth Posted March 15, 2019 Author Share Posted March 15, 2019 same in photoshop... something is wrong... Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 18, 2019 Share Posted March 18, 2019 Do you want to share the passes? At least I could better understand what you are dealing with though it seems you know what you are doing. Link to comment Share on other sites More sharing options...
Francisco Penaloza Posted March 18, 2019 Share Posted March 18, 2019 I took a quick look at your file. Your image is not 32Bit, and it also seems to have a Gamma 2.2 applied already. Maybe some color mapping included?? This is not really a problem but it really changes how much you can adjust this image. This is OK if you only need to make a small correction. But if you 'need' a filly re ensable of the image from all passes, then you need to output a fully 32Bits image with Gamma 1.0, no clamping or colormaped. in your Case that EXR is not. Link to comment Share on other sites More sharing options...
yanligoth Posted March 18, 2019 Author Share Posted March 18, 2019 Do you want to share the passes? At least I could better understand what you are dealing with though it seems you know what you are doing. sure, here https://www.dropbox.com/s/1q60py7xovuj3fp/Scene6.0673.exr?dl=0 Link to comment Share on other sites More sharing options...
yanligoth Posted March 18, 2019 Author Share Posted March 18, 2019 (edited) I took a quick look at your file. Your image is not 32Bit, and it also seems to have a Gamma 2.2 applied already. Maybe some color mapping included?? This is not really a problem but it really changes how much you can adjust this image. This is OK if you only need to make a small correction. But if you 'need' a filly re ensable of the image from all passes, then you need to output a fully 32Bits image with Gamma 1.0, no clamping or colormaped. in your Case that EXR is not. EXR 32bit unfortunately doesn't fix the problem I'm experiencing... None of these settings are correct? 3ds Max settings are: Input-Gamma-2.2, Output-Gamma-1.0 Edited March 19, 2019 by yanligoth Link to comment Share on other sites More sharing options...
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