Glass reflection problem

[alfienoakes]

I have a staircase that has a glass screen next to it. Now the glass is normal fresnel glass, and reflects in most instances how I want it too..

 

But, where its is picking up a bright reflection on my floor, it is really over blowing it. Have a look at the image and you will see what I mean.

 

Not sure how to stop this, as I dont want the glass any less reflective, nor the floor. The floor wil have a proper map applied, and the glossys will be upped, but other than that, it will stay reflective.

 

Any clues would be great. Glass on stairs is as follows

 

Diffuse - dark green

Reflect and refract 255 white, fresnel IOR 1.6 and fog of.01 dark green

Affect shadows on.

 

Thats it really.

 

Cheers

[Victor Erthal]

i think what you see there in the reflection is a specular or reflection of the sun in the floor and then reflected in the glass. A small change in the direction of the sun would probably get rid of it.

[onyx]

I have a staircase that has a glass screen next to it. Now the glass is normal fresnel glass, and reflects in most instances how I want it too..

 

But, where its is picking up a bright reflection on my floor, it is really over blowing it. Have a look at the image and you will see what I mean.

 

Not sure how to stop this, as I dont want the glass any less reflective, nor the floor. The floor wil have a proper map applied, and the glossys will be upped, but other than that, it will stay reflective.

 

Any clues would be great. Glass on stairs is as follows

 

Diffuse - dark green

Reflect and refract 255 white, fresnel IOR 1.6 and fog of.01 dark green

Affect shadows on.

 

Thats it really.

 

Cheers

just uncheck the specular setting for the light/s outside of the window. Looks like a v-ray light specular reflection.

[alfienoakes]

Hey guys,

 

Yep.. that would make sense. I forgot to mention it is a Vraysun outside though..

 

I could move the sun, but I really wanted to cast some shadows against the staircase.. looks a little more dramatic.. Any other ideas..?

[mhmd19732008]

hello

1-try changing exit color of glass material.

2-try lowering thickness of glass, i think the problem in the refraction too.

hope works

[alfienoakes]

Hey Mohammed..

 

No luck there.. but I do know what is causing the problem.. I just need to work out HOW to fix it.

 

The floor has a glossy reflection to it. If I turn the glossies off, and re-render with normal reflections I have no problems, the glass comes out correct.

 

So, it is the floor glossies that is the problem in the glass.... Any clues..

 

Cheers

[Stephen Thomas]

Have you checked the 'invisible' box in the vray sun settings? Or maybe changing the highlight glossiness independantly from the overall glossiness might help.

[alfienoakes]

Hi Stephen,

 

Yeah, I tried the invisible sun, and that didnt work, and also tried upping the glossiness of the floor, but still did the same thing.. In fact, I tried loads of settings on each material, max depth, glossy, interpolate.. Nothing seems to make any difference..

[alfienoakes]

OK..

 

The only thing that I can make work here, is to either set the floor to have no glossy reflections, or, the less glossy they are the better.

 

So I will have to render the floor with the glossy as I want it, then re-render a region of the glass, with the glossy set at say .9, then overlay in post.

 

Fed up of it now......