Archived Old Bugs

[Philip_cg]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

Corey,

Thanks for keeping us informed. I will be patient and wait for the next build. Any news on the spotlight bug/limit?

Regards

Phil Thompson

[smail]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

Hi ASGvis,

I'm very interested in SR1, especially new DR, because my notebook with Rhino+Vray isn't very fast for renders, and until tuesday I have to finish my project. So can I expect new SR1 (or updet of DR) until monday (21st of January)?

Thanks for your great job!

smail

[Gijs]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

Beta looks good! I have summed up the bugs I reported lately with an indication if they are fixed. Hopefully others can add to this.

not fixed but see next bug for workaround - reflection: when a map is used for reflection color, the map gets inverted on rendering
fixed - invert check box is not persistent: it works, but when you open the texture editor, it gets unchecked and the type is switched to none
not fixed- when you change any vray settings and close rhino, the change of settings is not recorded as a change, and therefore all changes will get lost, since rhino won't prompt for a save.
fixed- fresnel reflection: there are two values : fresnel IOR and refract IOR. If you make a standard glass like material and make the IOR in the refraction layer 1, while leaving the refract IOR in the fresnel fresnel map on 1.55, the fresnel reflection is canceled out. If however, the refract IOR in the fresnel map is set to 1 as well, the fresnel reflection is rendered correctly.
not fixed - purging unused, will delete the sub materials of angular blend and 2 sided materials
not fixed - changing material names that are used in angular blend materials, will not update in the angular blend material

[Micha_cg]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

I thought, it was working in the past: if I set a texture at the fresnel slot to control the reflection intensity of a plastic material, than I can't use the intensity multiplier to dim the intensity. Attached a typical example for that usage: the map disable the reflections at the holes and I try to get a lower reflection intensity. At the moment this can be done by manipulation of the image in a photosoftware only, but the texture intensity multiplier should do it.



I hope the material editor can be refined in the near future, because material creation isn't easy now.
For example I have a simple plastic material and want to create a second one with the same look, but with transparency mapped holes (like above). It's difficult to get the same reflection intensity. If we had a "multiply" function additional to the texture "blend" function, than I could multiply a b&w map to the reflection intensity color.
Or remember on the problem, to add a "diffuse-only" decal to a car paint. Free moving of material layers would be the best solution.

[Micha_cg]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

And if we talk about material problems, here an other, new bug. Last I try to render two object with the same main glossiness, but one material should show a pattern.
Ooops, this is extrem difficult and I suppose so, a bug is there. If I set glossiness 0.9 or use a grey map with 90% grey (230), than I get different rendered glossiness. Could it be, that something is wrong with the gamma correction for the glossiness map? Textures cause a stronger blurry effect than expected, it's difficult to get light blury effects.



PS: One of the subtle bugs.

[Gijs]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

changing the size of an object's mapping (for example box) does not update in the rendering. workaround: cut and paste the object and check "use scene material". If it is not a mesh object, changing the mesh settings also helps.

[Gijs]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

bitmap loader:
change to negative and change the multiplier. you will see that after reopening the multiplier is back to 1 (old bug if I remember correctly)

[Micha_cg]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

Hi Gijs, so far I know, some of the old bugs are alive.

Joe or Damien, could you post a list of known, open bugs?

[kinetic2]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

Don’t know if this is a bug.
When using the new version I set up a room, assigned all my textures and lights etc, done a few renders and all was well, I closed rhino down and went back in, now everything in the scene is completely over exposed.
Anybody have any ideas…
Thanks
Mark

[kinetic2]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

Just tried something, I removed all the lights and rendered, scene is black, added just one spotlight and rendered and the scene is completely over exposed.
Thanks
Mark

[merlik585]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

Yes I have seen that also,looks like vray don't remember the spotlight settings from one session to another,They default back to scalar,Every time I have to reassign the spotlight.
BTW what does scalar means exactly,and all the other abbreviation?

Renee

[dalomar_cg]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

The default setting of scalar means that the intensity of the lights will have no sort of photometric reference. This is how all the lights were originally, which made it hard to get a specific understanding of how bright a light was photometrically.

The other labels are different photometric units. I would suggest a quick wikipedia search on a few of them and I can't remember the specifics on most of them. They are all some sort of measurements of intensity for some sort of distance/area....I'll try and track down some reference.

[kinetic2]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

To give you an idea of how much I had to drop the settings.
I hade to change my light intensity / multiplier from 2 down to 0.003, and drop my physical camera settings as well.
This was using the scalar units; it’s like what Renee mentioned it seems to lose its settings or something when you re-open the file.
Mark

[Micha_cg]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

If I load a material from the ASGvis mats, than it is renamed from copper_matte to default_material.

PS: Is the color of the copper material at the right place? If I understand right, the metalic color should be at the fresnel layer here or the filter color.

[Micha_cg]

Re: ****Please Post All V-Ray for Rhino 4.0 v1.0 SR1 Beta bugs here.****

If I set z-buffer output black/white 203.7/203.3, than the values automatic jump to other values like 203.69999/203.300003.