some questin about future

[redmotion]

Don't think there are pathtracers out there with render passes support

I think you're right - a full channels/passes system almost defeats the object of using pathtracing. I don't expect the passes/channel feature to be available for it. Direct lighting, yes - pathtracing not so much.

Implementing Alpha mattes would be nice though, where you can just render out a white on black pass for individual materials in the scene. This would give compositors some better control for isolation masks and colour correction.

[DavidT]

Implementing Alpha mattes would be nice though, where you can just render out a white on black pass for individual materials in the scene. This would give compositors some better control for isolation masks and colour correction.

I'm not very knowledgeable about compositing render passes, but with the new script feature that can allow camera information to be exported from the 3D application into Octane, couldn't you do an alpha pass from the 3D program's internal renderer and combine it with the render from Octane? The only problem I could see with it not matching up is maybe in anti-aliasing being different from the two renderers. I'm curious if this sounds like a plausible solution. I was thinking a z-depth pass would work with this technique.

[radiance]

Implementing Alpha mattes would be nice though, where you can just render out a white on black pass for individual materials in the scene. This would give compositors some better control for isolation masks and colour correction.

I'm not very knowledgeable about compositing render passes, but with the new script feature that can allow camera information to be exported from the 3D application into Octane, couldn't you do an alpha pass from the 3D program's internal renderer and combine it with the render from Octane? The only problem I could see with it not matching up is maybe in anti-aliasing being different from the two renderers. I'm curious if this sounds like a plausible solution. I was thinking a z-depth pass would work with this technique.

alpha is scheduled for 2.3, a z-depth could be added for beta3.
those 2 are what we'd like to work on first, all the other kinds of passes present a lot of difficulties.

Radiance

[Chris]

Implementing Alpha mattes would be nice though, where you can just render out a white on black pass for individual materials in the scene. This would give compositors some better control for isolation masks and colour correction.

I'm not very knowledgeable about compositing render passes, but with the new script feature that can allow camera information to be exported from the 3D application into Octane, couldn't you do an alpha pass from the 3D program's internal renderer and combine it with the render from Octane? The only problem I could see with it not matching up is maybe in anti-aliasing being different from the two renderers. I'm curious if this sounds like a plausible solution. I was thinking a z-depth pass would work with this technique.

alpha is scheduled for 2.3, a z-depth could be added for beta3.
those 2 are what we'd like to work on first, all the other kinds of passes present a lot of difficulties.

Radiance

Those 2 are the most important anyways