Archived Old Bugs

[craiggorton]

Re: ***PLEASE POST ALL V-Ray for Rhino 1.0 BUGS HERE***

I just noticed that when I select multiple surfaces and then assign a material by matching, the rendered viewport displays correctly but the render does not. When I select the surfaces again and browse for a material it shows me that they are assigned incorrectly.

Craig

[Travis Serio_cg]

Re: ***PLEASE POST ALL V-Ray for Rhino 1.0 BUGS HERE***

ive noticed that as well.

[jbdstudio]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

1. If Rhino is minimized with Vray open you can not click on the taskbar instance to
maximize it you must right click and select restore.

2. If I apply a material to a block instance it stores that a material has been applied to that object in object properties but does not render that block instance with the material that has been applied.

Brian

[Micha_cg]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

I'm not sure it's posted befor: if a directional sun lightis used and at the global option this sun is enabled and override sun's parameter is set, than it is not override.

More sun&sky bugs:

• if I use the sky&sun at the GI env only, a reflection/highlight of the sun is visible
  
• if I set sky&sun at the background env and a reflection env with single color, the sky&sun is visible at the reflections (if I set the background at a color too, than the reflection color is visible like it should be)
• if the sun directional light of a scene is on, but the GI/background are disabled, than the directional sun light cause a sun effect without sky (diffuse lighting + specular effect) - maybe this is no bug

My experiments show me:

• the sun of the GI light cause a highlight effect without reflection effect
• the sun of the background env cause a highlight and a reflection effect. I wish I could disable the reflection effect or dim the intensity, because it cause the typical high intensity antialiasing problems (at the Maxwell sun&sky system I never have seen this. Maxwell seems to fake something here, but it is more usefull.)
  

[joe_b]

Re: ***PLEASE POST ALL V-Ray for Rhino 1.0 BUGS HERE***

I just noticed that when I select multiple surfaces and then assign a material by matching, the rendered viewport displays correctly but the render does not. When I select the surfaces again and browse for a material it shows me that they are assigned incorrectly.

I don't think the "Match" button does anything with userdata (our materials). Or maybe I'm not following what your saying.

[joe_b]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

1. If Rhino is minimized with Vray open you can not click on the taskbar instance to
maximize it you must right click and select restore.

Yep - thats been around for a while. I'm not sure what the hell is causing that irritating little bug.

2. If I apply a material to a block instance it stores that a material has been applied to that object in object properties but does not render that block instance with the material that has been applied.

Yes - thats something that will be addressed in the first Rhino service release. But the workflow is supposed to be such that if you specify your objects to get their material "from parent" and then make a block of them then materials applied to the block will carry down to the children. However, like I said, it isn't working like that now but is supposed to be taken care of in their first service release.

[joe_b]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

I'm not sure it's posted befor: if a directional sun lightis used and at the global option this sun is enabled and override sun's parameter is set, than it is not override.

Ok - I'll check that out

More sun&sky bugs:

• if I use the sky&sun at the GI env only, a reflection/highlight of the sun is visible
  
• if I set sky&sun at the background env and a reflection env with single color, the sky&sun is visible at the reflections (if I set the background at a color too, than the reflection color is visible like it should be)
• if the sun directional light of a scene is on, but the GI/background are disabled, than the directional sun light cause a sun effect without sky (diffuse lighting + specular effect) - maybe this is no bug

My experiments show me:

• the sun of the GI light cause a highlight effect without reflection effect
• the sun of the background env cause a highlight and a reflection effect. I wish I could disable the reflection effect or dim the intensity, because it cause the typical high intensity antialiasing problems (at the Maxwell sun&sky system I never have seen this. Maxwell seems to fake something here, but it is more usefull.)
  

I'll see what I can figure out as far as these go.

[craiggorton]

Re: ***PLEASE POST ALL V-Ray for Rhino 1.0 BUGS HERE***

select a surface, view its material properties. under the material name window there is a match button, which should allow you to match the object's material to another. if you do this, it will update the material name in the window, but not really for the rendering.

Craig

[dalomar_cg]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

if I use the sky&sun at the GI env only, a reflection/highlight of the sun is visible

If I understand your "bug" correctly, then you are saying that even without placing a sun in the scene the sky appears to have the highlight of the sun. If this is the case, then it isn't a bug. The sky itself varies its illumination based on the intensity of the sun rays the are being radiated through the sky. So basically the part of the sky that has its normals at close to the angle of the sun itself, then less of the sun's intensity will be disipated by the sky, and therefore make the sky appear as if it is brighter. This will increase to the point in the sky where the normal is exactly at the angle of the sun which will retain the most illumination. I know your probably asking, but I don't have a sun in the scene. In actuality there is a "sun" there in the form of the default lights in rhino. I know we can't disable having a light for the sky (it has to be the default light, or an added light), but maybe the sky can be added without a light in max. So at that point, it should probably be wish rather than a bug.

[Micha_cg]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

Did you set a highlight glossiness below 1? I tested it now again and see, the specular will be created only if a little bit roughness is enabled.
The problem seems to be, that the directional sun light create a specular also if the sun is used at the GI channel only.
Some where at the chaosgroup I have seen the wish for a specular effect of the sun. So, maybe, the specular effect of the Rhino sun is the bug. Does the 3dsmax sun show highlight effects?

I think, it could be good to get two new sun options: affect specular and affect reflections. Speculars (highlights) cause no artefacts, but are not interreflected between glossy objects. Reflections of the sun are reflected between glossy objects, but show artefacts and strange effects at blury reflections (see image above). Could be useful to choose between this two or disable both.

[joe_b]

Re: ***PLEASE POST ALL V-Ray for Rhino 1.0 BUGS HERE***

select a surface, view its material properties. under the material name window there is a match button, which should allow you to match the object's material to another. if you do this, it will update the material name in the window, but not really for the rendering.

Craig

Yes - the material name is a part of the basic Rhino material, not our custom userdata. I'm pretty sure the custom userdata does not get transferred. I'm pretty sure this is the case in Rhino 3 - maybe Rhino 4 actually transfers the user data.

[Gijs]

Re: ***PLEASE POST ALL V-Ray for Rhino 1.0 BUGS HERE***

Today I found a few bugs with the material editor:

if you put a map in the reflection slot, it is inverted.

general issue with all map slots: the color beside the map is canceled out when there is a map active. For example, if I want to add a diffuse layer with only a small transparency map (for a logo), I add a small planar map to the object, disable tiling in the material. This works fine as far as the transparency map reaches, but then I want the transparency color to work as well to block the rest of the diffuse layer, but that doesn't work.

A workaround is to invert the map and tick invert in the texture editor

[joe_b]

Re: ***PLEASE POST ALL V-Ray for Rhino 1.0 BUGS HERE***

if you put a map in the reflection slot, it is inverted.

The map to the reflection slot is inverted on purpose. As are the colors for reflection. A reflection of pure-white is a pure reflection, as such, no light gets through and is internally treated as a black transparency (meaning no light gets through). Its a bit confusing to think of it like that, but that is whats happening behind the scenes.

I suppose we could find a better way to handle it - but changing it at this point will break existing scenes. I'm open to suggestions though.

general issue with all map slots: the color beside the map is canceled out when there is a map active. For example, if I want to add a diffuse layer with only a small transparency map (for a logo), I add a small planar map to the object, disable tiling in the material. This works fine as far as the transparency map reaches, but then I want the transparency color to work as well to block the rest of the diffuse layer, but that doesn't work.

I see - I'll have to discuss how to handle such cases with Vlado. I believe this is a result of when we changed from the "blending" multiplier to our straight-up multiplier. Before, the texture and color would be blended - but now, as you've found, we opt for a texture if one is set. I suppose our new way of doing things would be ok if I could get feedback about when we've attempted to access a texture outside of the mapping range. Since in those cases we should just use the color and ignore the texture. I'm not sure if such a means of polling for out-of-uv-bounds texture access is available at the current time. I'll see what I can find out.

[Markvanhandel]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

Hi, I'm running my first attempts at transparency maps for perforated materials with VRay For Rhino 4 B2. Ran into an odd occurance. I created an alpha map in photoshop and saved it as a .bmp. It came out skewed. When I applied it as a .png it was OK. Unfortunately I am having no luck attaching images so that description will have to suffice.

[joe_b]

Re: **** PLEASE POST ALL VFR4 BETA 2 PROBLEMS HERE *****

Hi, I'm running my first attempts at transparency maps for perforated materials with VRay For Rhino 4 B2. Ran into an odd occurance. I created an alpha map in photoshop and saved it as a .bmp. It came out skewed. When I applied it as a .png it was OK. Unfortunately I am having no luck attaching images so that description will have to suffice.

You can post the images to a free hosting site like http://imageshack.us - they would help us verify the problem. Thanks