Obtaining render with shadow on a transparent background

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25 Jun, 2012 Pavel
25 Jun, 2012 # Re: Obtaining render with shadow on a transparent background
Greetings! Friends, please help to understand! How do I get a white background after rendering, using VrayMtlWrapper? Print a settings screen


25 Jun, 2012 Anton (Staff Author)
25 Jun, 2012 # Re: Obtaining render with shadow on a transparent background
Hello! The main objective of VrayMtlWrapper - to get the desired rendering elements, such as a shadow falling on the object acceptor (the one on which VRayMtlWrapper applied), on a transparent background. To do this, it is necessary to apply VrayMtlWrapper acceptor and configured the same way as you did, with the only exception that the parameter Alpha contribution must be 1 and -1. The second "trick" is that the frame buffer does not work with transparency, and you simply do not see it. Instead, it will show you the object rendering in the acceptor, as if it simply Base material, without Mate properties. To see the same shadow, but on a transparent background, you just need to save the render to a format which supports transparency, such as png, and open it in a 2d editor, for example, in Photoshop. So you see necessary to you an object with a transparent shade😉 As for the white background that at first do not understand what you white instead of transparent background, and secondly, in VRayPhysicalCamera can be shifted white balance (color glow from VRayLight in your stage I do not know), and instead of a white background, you get pink 🙄


25 Jun, 2012 Pavel
25 Jun, 2012 # Re: Obtaining render with shadow on a transparent background
Thanks Anton !!! happened...


4 Apr, 2013 Irina
4 Apr, 2013 # Re: Obtaining render with shadow on a transparent background
How to get the render object with shadow on a transparent background? My job is to get the object with the shadow on a perfect white background. I peresfechivayu the background, then there is a strange shadows and highlights. I read the article how to keep the glass with a transparency in which you have premenyate that preserve transparency in Photoshop then insert any background. I do not what comes out. Prompt dejsvie correct succession. It is possible to know the exact same thing sohronyat separately, the shadow and the background. But also I do not know how to use this technique. Tell me what you need to get as sdelot you such as the Old Ship lantern http://renderstuff.com/lantern-3d-model-old-ship-214/


25 Jun, 2012 Anton (Staff Author)
7 Apr, 2013 # Re: Obtaining render with shadow on a transparent background
Hello!

Very simply, for example:

- On the background / the substrate on which the model and that will take a shadow, apply a material VRayMtlWrapper .

- In its slot Base material to enclose the necessary background material.

- In the Matte properties tick Matte surface and set the Alpha contribution -1.

The same can be done by selecting the same object and the background by clicking on it the right mouse button. The context menu appears. There choose V-Ray properties and it is necessary to install the same as in the above process the material. In fairness, it should be noted that the shown you render it a complete substantive 3d rendering , no "cheating" with the background.



7 Apr, 2013 Pavel
7 Apr, 2013 # Re: Obtaining render with shadow on a transparent background
There have already discussed such work with VrayMtlWrapper and shadow, but I have a different situation. I need to shadow addition was also reflected from the object. If you set the reflection through nested VRayMtl, the substrate loses its transparency and becomes visible. How to make a shadow with reflection, but could not see the substrate? Picture here:


25 Jun, 2012 Anton (Staff Author)
8 Apr, 2013 # Re: Obtaining render with shadow on a transparent background
Hello!

What are you trying to get this Shadow and Reflection rendering elements, and both that and that with his alpha, but still mixed together in one render layer😁 VrayMtlWrapper works well only with the Shadow. With Reflection his problems. Whether so intended, whether it fixes, but the situation is such. That is, as the splint can get out of this situation:
Matte shadow and reflection using V-Ray 2.0

But as for me, it's easier to render the desired render the elements and in the same photoshop them zakompouzit receiving the desired image.



7 Apr, 2013 Pavel
8 Apr, 2013 # Re: Obtaining render with shadow on a transparent background
Everything was decided install the latest version of V-Ray (2.4). Surprisingly, it did not even have to change the scene. He took a file from the 2.0 and V-Ray render it at once as needed 2.4. It turns out that was a bug.


15 May, 2013 Artiom
15 May, 2013 # Re: Obtaining render with shadow on a transparent background
I do everything as written here. I get png. with the object, shadow and transparency. But the shadow of Photoshop also considers, as it were transparent (the RGB tab in the Info on all nil), although they can see the screen. What action to perform on to get an object on a white ???


16 May, 2013 gus_ann
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
Artyom, hello. This is my first work on this subject. Evaluate how you? Certainly not a masterpiece far, but did on the elements - bekgraund, shadow, reflection, flowers themselves.


15 May, 2013 Artiom
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
gus_ann, welcome. As I understand it, you asked me to evaluate your work. Earlier I was engaged in 3d pampering and doing extremely low-quality video like this: http://www.youtube.com/watch?v=Bvm3oS7gKyU. As you understand, I maloopyten and is unlikely to be able to give a sane estimate of your work, but now I see the problems, which I will have when you finally deal with kompouzom: you will wind up with a neat combining reflections and shadows. You may have spent very little time on this model: the texture on the vase looks as if UVW not affected. This, I understand, model artificial flowers? Very good-looking white petals: no noise and artifacts. Now this is what Sam wanted. In general, it seems predmetka really complicated thing: it will be difficult to achieve a professional level. The big request: could you please tell us briefly about the studio and lighting as have the lack of stocks in the picture. Very big request: light kompouza question as detailed as possible: some render elements take, what to do with them in photoshop?


16 May, 2013 gus_ann
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
I do not mean ask the model colors, and about white on white ... I needed a quick and not particularly high-quality model, and that's collected, not even talking about realism. Anyway. Of all your questions: 1. The scene is simple, substrate plus three vie ray light (right, left and middle), differently configured luminescence strength and size. 2. About the shoals in the picture - I can not understand what you mean. 3. Render elements - all viscorbel lesson about the ring. No amateur. Here somewhere was a reference to him.


15 May, 2013 Artiom
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
2.Kosyaki in the picture - is this: and here it is: Used lightbox, in the first case - a translucent wall, through which the light ray vie lights, in the second - just vie lajty yard. 3. I meant Render Elements tab in Settings V ray. From there, take the elements Render to exr, collected in pPhotoshop ... Tried on lesson viscorbel -. I did not.


16 May, 2013 gus_ann
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
the second link does not open. In the first case, just nedosvetil and almost no shadows. And about the second way through the Render Elements, I do not know anything. Maybe you can not, but why? Try on the first lesson to the end, take a simple ball and otrend. I got all the elements without any problems.


15 May, 2013 Artiom
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
If the image is viewed at a magnification of small stocks in short supply. Scoring different parameters does not help. About Render Elements tab - like so provides a more flexible adjustment of the individual layers. I would still try for the lesson.


15 May, 2013 Artiom
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
Here is a gray translucent garbage turns in Photoshop instead of shadows on pure transparent background. I'm still a corner eraser podtёr that was clear. In general, post 6084. Obviously I Th something in Fshope do not know what to do. Above here tells it all the way to post 5684 of a "full-fledged subject of visualization states." (Along the way, these are the Render Elements). I would, damn, at least some to get where really there "full ..."


16 May, 2013 gus_ann
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
I understand that you render the item is received in a scene from the lightbox? If yes, then you have the same Lightbox transparent? It turns semi transparent element.


16 May, 2013 gus_ann
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
There's still a lesson should be excluded from the support of some lights, my first little too failed.


15 May, 2013 Artiom
16 May, 2013 # Re: Obtaining render with shadow on a transparent background
Your recent comments at last to take effect. The trick with the application of the material, either by changing the properties of an object Vray Properties (all as defined above in the subject) does not work when the scene Lightbox with semi-transparency. It now remains qualitatively illuminate the object and make acceptable shade. About how you do in a scene with a vase. Thanks for answers.


15 May, 2013 Artiom
17 May, 2013 # Re: Obtaining render with shadow on a transparent background
Again, nothing comes out. It is impossible to get a clean shade of Vray Light, naprvlenie object. A shadow of the reflected light can not be seen with this method (with Material Wrapper). It turns out just an object on a transparent background, without shadows.


5 Aug, 2013 Giblotus
5 Aug, 2013 # Re: Obtaining render with shadow on a transparent background
Greetings. I have this problem: We need to make reading of the subject on a pure background with shadow, where it is half submerged in water, and the lower part of the floor of the object is transparent. And I wonder mozhnoli materials VrayMtlWrapper MappingShadow make so that objects that appeared zapod them did not disappear and become translucent.


9 Sep, 2013 Maksim
9 Sep, 2013 # Re: Obtaining render with shadow on a transparent background
Hello! Is it possible to make all of the GI interior was kept at the facility (particularly important reflection), but the object itself cast a shadow and reflection on white plane?


25 Jun, 2012 Anton (Staff Author)
10 Sep, 2013 # Re: Obtaining render with shadow on a transparent background
Hello! GI from renderemom environment on site, as well as reflections on the definition of work with VrayMtlWrapper or Visible to Camera Of function of geometry - is stored. The object is not surrounded by renderemoy in the chamber? but not hidden geometry maintains all properties and looks exactly as if it was rendered not concealed environment. Just as the use of VrayMtlWrapper implies acceptance of shadows and reflections on the subject scavenger, most importantly in the Base material slot to put the necessary meterial with tebuemymi reflective properties😉


21 Oct, 2013 Yevgeniy R
21 Oct, 2013 # Re: Obtaining render with shadow on a transparent background
Welcome renderstuff !!! Actually I had a problem. Is 3d model of the statue. There is a picture (JPEG) Places where there should be a statue. Actually as a model fit to the exterior (the real one). I was expecting it kakieto machinations HDRi map. But what if there is only a photo? How is all this to crank that everything was correct. What would the shadow of the statue of discarded on the ground. Well, all the possibilities that can be done. I have even seen, somehow do so that the shadows of the trees falling on the object, but I understand a special model tree? Please help! Order on fire! (Thank you very much in advance!


21 Oct, 2013 Ily
21 Oct, 2013 # Re: Obtaining render with shadow on a transparent background
Normal Night and day in the photo: harmonization of perspectives, lighting, etc. If urgent, it is better to look for lessons in the interior. Shadows can be any light source to project or put invisible objects cast shadows. Super-accuracy and compliance is usually not required. Dropping neti of the statue on the background is the modeling of objects on which the shadow is cast and http://renderstuff.com/obtain-render-shadow-transparent-background-work-vraymtlwrapper-391/


21 Nov, 2013 Aleksey
21 Nov, 2013 # Re: Obtaining render with shadow on a transparent background
I need to enter the model in the photo. They sent me a finished object in maksovskom file that I need to write. The problem is that I only rendered the object and the lower part of the background (to the horizon). I climbed all the settings could not find anything. This is what I have coming out! As you can see the top half of the background is cut: But that is rendered, if you remove the background. Bottom black, white top, like alpha-channel: Help🙂 I is 14 max.


16 May, 2013 gus_ann
21 Nov, 2013 # Re: Obtaining render with shadow on a transparent background
Alex, hey, it seems that the scene is illuminated by means of VRay dome. This light gives the black below the horizon. If it register as a texture image (usually HDRI), while the upper part is colored in this image (the sky). Why in this case, on the contrary - it is difficult to say. You write "if you remove the background", and what exactly do you clean? What made this background, the plane? Unclear. Alternatively, with the image, it can then be substituted into Photoshop, having considered the white transparency. If this image is put in the texture of the house, it will not work, the house is a hemisphere, and thus the image for it to be spherical. I think something like things, but certainly do not know.


22 Aug, 2014 yura.
22 Aug, 2014 # Re: Obtaining render with shadow on a transparent background
Is it possible to exclude the subject from the camera render-visibility, but leave its reflection.


25 Jun, 2012 Anton (Staff Author)
22 Aug, 2014 # Re: Obtaining render with shadow on a transparent background
Hello! Highlight the desired object, click on it right mouse button and uncheck the menu that appears with the "Visible to Camera". Thus, the object will no longer be visible directly to the camera, but consider that this facility will continue to be seen not only in the reflections, but also continue to cast shadows. In this connection, in his place in the line of sight camera, formed dirty spot (shadow).


5 Mar, 2016 Ilshat
5 Mar, 2016 # Re: Obtaining render with shadow on a transparent background
Hello please tell me when I cover VRayMtlWrapper ball balloon becomes visible


25 Jun, 2012 Anton (Staff Author)
6 Mar, 2016 # Re: Obtaining render with shadow on a transparent background

Hello!

Composite materials V-Ray does not work with standard materials of 3ds Max. For everything to work correctly, you must only use materials V-Ray. Standard material with self-illumination can be replaced either VRayMtl with a non-black color «Self-illumination», either literally luminous VRayLightMtl . It all depends on what you want to achieve from the self-luminous mat.



10 Apr, 2016 Stas
10 Apr, 2016 # Re: Obtaining render with shadow on a transparent background
Hello! Please tell me why I have to plan a VrayMtlWrapper material are not only shadows and reflections background.


25 Jun, 2012 Anton (Staff Author)
13 Apr, 2016 # Re: Obtaining render with shadow on a transparent background
Hello! It's simple. VrayMtlWrapper material designed to "catch" the different render elements, it does not render. In particular, it can "catch" not only a shadow and reflection if present in "Base material". All you need is either disable the reflection in the base material, or reduce the degree of "trapping" element reflections VrayMtlWrapper themselves. For the degree of reflection display responds option "Reflection amount".


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