Archived Old Bugs

[joe_b]

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

Yes, I believe we recieved complaints from someone rendering some animations with Bongo a while ago. Unfortunately he didn't provide us with any information. He went to McNeel for support with Bongo instead of to us for VfR support - he never elaborated anything beyond a crash problem after a certain number of frames.

[Gijs]

glossy reflection map bug

I want to create a falloff in the the reflection glossyness. So I tried with a fresnel, but it doesn't work. Is it supposed to work? if not then it shouldn't be an option in the first place.

[joe_b]

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

Glossiness is a floating point value...so I guess a fresnel map turned into floating point value used for glossiness isn't doing what you expect it to do. I don't know that this is a bug - I'm sorry if this caused confusion though.

[Gijs]

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

don't need to be sorry...just tell me how I can achieve the falloff of glossyness

anyhow, when I put in a fresnel in the glossyness slot, the material just turns out matte.

[joe_b]

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

heh I'll ask Corey to take a look at this thread

[Micha_cg]

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If I set a texture at "inverted" and use a gamma override, than the gamma works inverted too - gamma 0.45 looks like gamma 2.2.

[Micha_cg]

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

"Maps" at the gobal options disabled, but reflection map is loaded again.

[joe_b]

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

If I set a texture at "inverted" and use a gamma override, than the gamma works inverted too - gamma 0.45 looks like gamma 2.2.

I'm not sure the gamma should be inverted. I'm pretty sure this is the behavior for the invert texture

 // we get the color at a given context in the original texture
   VR::Color color = tex.getColor( context );
   // now we take the inverse of that color ( 1.0 - orig.red, 1.0 - orig.green, 1.0 - orig.blue )
   color = color.whiteComplement( );

I'm pretty sure the gamma is applied inside the getColor function of the original texture, so I don't think it should be effected by the inverting. I'll have to double-check though.

"Maps" at the gobal options disabled, but reflection map is loaded again.

ok - I'll check that out.

[Micha_cg]

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

Joe, I'm not sure what you mean. I would like, if I set a gamma at 0.45, I get a contrastful map and not a dull map.

[joe_b]

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

Joe, I'm not sure what you mean. I would like, if I set a gamma at 0.45, I get a contrastful map and not a dull map.

What I was attempting to show you was that the gamma is applied prior to inverting the color. So the gamma itself is not being inverted. Also inverting a color is the same as the white complement, not taking 1/color - so .4545 would not become 2.2 from that.

[Micha_cg]

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

My current project let me run in this bug. Here a sample scene.

My special hidden-wall method allow me to render small rooms. But today I have seen, that the wall is invisble at the third reflection bounce from inside the room. This is cause bad looking effect: in a small white room chrom objects show black reflections.
After few hours I found the reason: if I setup a filter color, than sometimes the reflected wall disappear. In this example scene the wall disappear if the filter color is below value 204.

the right chrom materials are setup with reflectance color (203,203,203)

[joe_b]

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

I have your scene and will continue digging around in it. I'm not sure whats going on after only briefly looking through it.

[Micha_cg]

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

... some times the import of a selfmade material dosnt' work.

[Micha_cg]

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

... if the exposure control slider of the frame buffer is moved outside the window, than it can adjust anymore.

[joe_b]

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

... if the exposure control slider of the frame buffer is moved outside the window, than it can adjust anymore.

I'll bring that up with Vlado

... if the exposure control slider of the frame buffer is moved outside the window, than it can adjust anymore.

As discussed in http://www.asgvis.com/phpBB2/viewtopic.php?t=1070#6283- I believe this is fixed in my dev build.