How to get a color pass with Vray?

[slooper]

ok - I'm trying to force my way through generating Render Passes with vray. I have my several lighting passes for my ceiling lights, skylight, and sunlight. But I need a color pass, strictly using an ambient shading model. No diffuse or specular shading. Typically, I would do this in the past by either bumping the Ambient color up to white or bumping the self-illum colors up to white for all the materials. Unfortunately, the Ambient setting doesn't seem to have an effect on vray and the vray materials do not seem to have a way of increasing self-illumination. Any tips on generating a color pass would be appreciated. I'm wondering if there isn't a way to utilize the G-Buffer output for this?

thanks!

sean

[slooper]

Ok, I think I figured out a decent solution.

1) Turn off all lights in the scene.

3) Create 6 direct lights, 1 pointing in each direction of each axis.

4) Turn off shadow casting and set the Multiplier of each light to .16 (.16 multiplied by 6 is 1.0). Also, I set the lights to "Ambient Only" but I don't know if this did anything.

5) Under "G-Buffer/Color Mapping" in the Render dialogue, set the Color Mapping type to Linear Multiply

6) Hit Render!


The biggest problem I had is that this only works correctly with Vray materials. There were a couple Standard Max materials in my scene and they came out about twice as bright as they should have in the final rendering.

just FYI

-sean

[suurland]

What a work around.. if only we had render elements.. hint hint vlado

/Thomas