VrayMTL source code

[RichardPotts]

Hi,
Im currently working on a project using vray 2.0 for maya (2.00.04 i think, im not 100%, im at home, machine is at work), however im having touble using opacity maps and the BlendMTL.
I created a base shader which has a texture mapped into the opacity slot, and the same texture modified into the refraction slot. This shader renders quickly (2mins frasme 1080)
I then map that material into a BlendMTL in additive mode, with a second vrayMTL setup for additional specular. This render takes much longer (20+mins).
ive tried multiple scenes and the same result. Would it be possible to get the VrayMTL source code so i can add an additional specular component, save using a BlendMTL.

Thanks
Richard

[vlado]

It is more work than you think; first you have to modify the V-Ray for Maya translator to recognize your extra parameter, second, if you take a look at a .vrscene exported from Maya you will see that the VRayMtl is not a single shader, but is split into several components put together with a layered material and there isn't one specific place where your extra specular would go.

It would be a lot simpler if you can get me a scene to vlado@chaosgroup.com so that I can check what is taking so much time.

Best regards,
Vlado

[RichardPotts]

ive fixed the problem by setting the blend amount to 0.999, 1.0 causes it to slowdown massively, however 0.999 is fine. By the way does opacity maps work with 2 sided materials? Opacity on the front side works, but if i put the same opacity map on the both sides Vray crashes.

Thanks
Richard

[dong_ming]

i like it good job