Chrisb222 Posted April 9, 2018 Share Posted April 9, 2018 I just started playing with PBR again and cannot see plant shadows. Is this normal? Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted April 9, 2018 Share Posted April 9, 2018 This is an exterior PBR. You can see the plant shadows in this one. They are not very real looking. I've softened them with some exterior lights. Second pic is with the exterior lights off and only the sun. Link to comment Share on other sites More sharing options...
Chrisb222 Posted April 9, 2018 Author Share Posted April 9, 2018 24 minutes ago, TheKitchenAbode said: This is an exterior PBR. You can see the plant shadows in this one. They are not very real looking. I've softened them with some exterior lights. Second pic is with the exterior lights off and only the sun. Wow, they don't seem as realistic as Ray Traced plant shadows. Are those Chief plants? I get no shadow whatsoever from trees but it's probably my graphics. Guess I'll continue to stick with Ray Tracing... thanks Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted April 9, 2018 Share Posted April 9, 2018 Just now, Chrisb222 said: Wow, they don't seem as realistic as Ray Traced plant shadows. Are those Chief plants? I get no shadow whatsoever from trees but it's probably my graphics. Guess I'll continue to stick with Ray Tracing... thanks Yes, they are all Chief plants. I'm just running a comparison Ray Trace now, will post in a few minutes - I can already tell that they are much more realistic that the PBR shadows. Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted April 9, 2018 Share Posted April 9, 2018 Here is the Ray Trace version after 24 passes, 6 minutes. Link to comment Share on other sites More sharing options...
Chrisb222 Posted April 9, 2018 Author Share Posted April 9, 2018 22 minutes ago, TheKitchenAbode said: Here is the Ray Trace version after 24 passes, 6 minutes. That's more like what I'm used to getting from tree shadows. Thanks for your help. Link to comment Share on other sites More sharing options...
cv2702 Posted April 9, 2018 Share Posted April 9, 2018 27 minutes ago, TheKitchenAbode said: Here is the Ray Trace version after 24 passes, 6 minutes. Strange soffit on the right hand side... Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted April 9, 2018 Share Posted April 9, 2018 1 minute ago, cv2702 said: Strange soffit on the right hand side... That's because the material properties where set for PBR. To get a bit of sheen I had to crank up the reflectivity (reduce roughness). Now when I Ray Trace the sheen is too glossy, will need to reduce it. That's a big issue as material properties are not seen the same way between PBR and Ray Tracing. Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted April 9, 2018 Share Posted April 9, 2018 Here is a direct comparison between the PBR and Ray Trace, both at the same resolution. There are some very noticeable differences throughout the scene. The scenes are only lit by the sun. PBR Ray Trace Link to comment Share on other sites More sharing options...
Chrisb222 Posted April 9, 2018 Author Share Posted April 9, 2018 I like putting a big shadow across the front yard on my exterior renderings and couldn't get this look with PBR, or even anything close... esp with no plant shadows. I'm a little bummed that PBR isn't going to work for me but at least I don't have to upgrade now. 10 passes, 2 minutes with my humble CPU Intel graphics... Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted April 9, 2018 Share Posted April 9, 2018 2 minutes ago, Chrisb222 said: I like putting a big shadow across the front yard on my exterior renderings and couldn't get this look with PBR, or even anything close... esp with no plant shadows. I'm a little bummed that PBR isn't going to work for me but at least I don't have to upgrade now. 10 passes, 2 minutes with my humble CPU Intel graphics... Looks great Chris. I don't believe you would be able to get close to that quality with the current state of PBR. Yes, a Ray Trace takes a bit longer, but there are times when the result is well worth the wait. Link to comment Share on other sites More sharing options...
rispgiu Posted April 10, 2018 Share Posted April 10, 2018 21 hours ago, TheKitchenAbode said: That's because the material properties where set for PBR. To get a bit of sheen I had to crank up the reflectivity (reduce roughness). Now when I Ray Trace the sheen is too glossy, will need to reduce it. That's a big issue as material properties are not seen the same way between PBR and Ray Tracing. The fact that we need to set up material properties differently between PBR and RT is really annoying. Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted April 10, 2018 Share Posted April 10, 2018 7 minutes ago, rispgiu said: The fact that we need to set up material properties differently between PBR and RT is really annoying. Absolutely, I'm playing with that right now to see if I can find a balance so I don't have to keep changing materials and lighting when I wish to switch between rendering methods. Link to comment Share on other sites More sharing options...
cv2702 Posted May 4, 2018 Share Posted May 4, 2018 On 4/9/2018 at 2:00 PM, TheKitchenAbode said: Here is a direct comparison between the PBR and Ray Trace, both at the same resolution. There are some very noticeable differences throughout the scene. The scenes are only lit by the sun. PBR Ray Trace Graham, Late to the game ... I finally realized I can't get tree shadows at all in PBR. Other shadows show up ok though. I'm using CA plants (core), updated my libraries, still no tree shadow. Am I missing some setting? Could you post your plan so I can test it on my system? Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted May 4, 2018 Share Posted May 4, 2018 I think this might be the issue, I am using the 3D plants from the bonus library, just tried with a regular 2D one from the core library and it does not show a shadow. 3D Tree on left, 2D tree on right. Link to comment Share on other sites More sharing options...
cv2702 Posted May 4, 2018 Share Posted May 4, 2018 I have nothing 3D in my bonus library (X9 or X10). The Plant Chooser returns zero 3D trees. Are your 3D plants SSA by any chance? BTW, importing 3D plants does validate your statement that only 3D plants produce shadows. Link to comment Share on other sites More sharing options...
TheKitchenAbode Posted May 4, 2018 Share Posted May 4, 2018 6 minutes ago, cv2702 said: I have nothing 3D in my bonus library (X9 or X10). The Plant Chooser returns zero 3D trees. Are your 3D plants SSA by any chance? BTW, importing 3D plants does validate your statement that only 3D plants produce shadows. I have SSA and maybe they are restricted to SSA users only, not sure but you could check online in the library download section. Link to comment Share on other sites More sharing options...
cv2702 Posted May 4, 2018 Share Posted May 4, 2018 SSA only Link to comment Share on other sites More sharing options...
Dermot Posted May 4, 2018 Share Posted May 4, 2018 The 2D plants are really just image objects (also known as "billboards"). They do not cast shadows in any of the rendering techniques (including the new PBR technique). They will cast shadows in ray trace views but these may or may not look very good depending on your camera angle relative to the sun angle. If your sun is basically perpendicular to the plant, the shadow will look just like a line instead of what you would expect and want. If you want more realistic shadows, your best bet is to use true 3D plant symbols. We have a library of 3D plants available for download that is available to all current SSA members. If you don't have SSA, you could always look for some that you could import as symbols from other sources on the web. If you decide to import some other 3D plants, be warned that not all of the stuff you can find on the web will look very good or perform very well. The 3D plants in our library have all been designed to work reasonably well with Chief. Link to comment Share on other sites More sharing options...
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