Spotty and Burnt walls while rendering

[raghudubey]

Hello to everyone!

 

its my first post on this forum. I have just started learning 3d visualization and been trying out my hands on few things.

 

Attaching a screenshot of a render I did using Vray 3.4 and 3ds max 2017. It seems as if at places the walls are emitting light from within and other places have dark spots.

 

I am using a 3ds max physical camera, enabled exposure control in the camera. Have a simple vray sun in my scene. The wall and floor materials are just colors with vraymtl diffuse property.

 

Not sure what is going on. Have tried to play with vray sun intensity and gamma settings but no luck. Not able to find anything that works for my case. please help.

 

 

thanks

[Chris MacDonald]

My my, what an expensive outlay for trying your hands on a few things.

[raghudubey]

Hah. My team mate had a cad drawing. I extruded it.

But agree its big layout.

I created some simple boxes and walls also and they seem to render fine.

[Chris MacDonald]

Is this with the default vray settings or some weird ones you've seen on a tutorial somewhere?

[raghudubey]

I am using GI setting as irradiance map and light cache. Earlier it was brute force i think by default

I also changed color mapping to linear multiply from the default reinhart. Rest all default. I read this somewhere on google books

 

Apart from that i did not change much in vray setup

[Shahid Ansari]

this spot always come when 2 wall overlapping

i think 2 polyline overlapping in autocad and when you import in Max it extrude both together

please check max file extrude line and try to delete and check its single or double.

[helengarcia]

Hello to everyone!

 

its my first post on this forum. I have just started learning 3d visualization and been trying out my hands on few things.

 

Attaching a screenshot of a render I did using Vray 3.4 and 3ds max 2017. It seems as if at places the walls are emitting light from within and other places have dark spots.

 

I am using a 3ds max physical camera, enabled exposure control in the camera. Have a simple vray sun in my scene. The wall and floor materials are just colors with vraymtl diffuse property.

 

Not sure what is going on. Have tried to play with vray sun intensity and gamma settings but no luck. Not able to find anything that works for my case. please help.

 

 

thanks

 

Try by First working on basic rendering set up's of V ray, then check for Indirect light illumination should be enabled. Use samplings-Primary as irradiance and secondary as light cache. These options might help you in clearing those dark spots.

[raghudubey]

thanks a lot Shashi and Helen. I am going to try your suggestions and respond asap on this thread.

thanks again

[raghudubey]

Hey Shashi - also I did find overlapping segments in the CAD drawing i imported. So going to cleanup and try again

[raghudubey]

this spot always come when 2 wall overlapping

i think 2 polyline overlapping in autocad and when you import in Max it extrude both together

please check max file extrude line and try to delete and check its single or double.

 

This worked for me. black spots and lights are gone.

Thanks Shahid and everyone for helping out!!!