Hey Deex, any thoughts on creating a Vray “MultiMatte” equivalent for Mental Ray? A script that would create a new “write to color buffer” and pass for each material specifically for a Matte. This is all asuming the render 5x render hike is gone as this won’t work with only 10 special channels. It would look like this in the render pass window:
Then when you open up the EXR you’ll have all the Matte Passes to choose from.
Also I wanted to mention I love the new setup, and have a couple of ideas of my own that could make it even better. With a couple of custom Buffer Presets in addition to those from the Mia Material this could be absolutely amazing, such as the following:
Non-FG Indirect Pass - Uses a different method to compute Indirect Light. Does not Flicker.
Pass SSS - creates a new SSS material with just the subsurface (no diffuse or specular). Can be used in compositing to add SSS to a material with less headache.
Pure Color Pass - Color input written directly to a buffer and not through Mia Material Diffuse_Raw.
Fresnel Pass - Pass to give more control over Reflection in compositing. Also good for creating a peach fuzz effect.
Point Cloud Pass - Used, in addition to a normal Pass for 2.5 relighting in compositing.
MultiMatte Pass - mentioned above.
Blinn/Phong Specular - Creates a Blinn or Phong for specular Highlights.
Feel free to email me about how to achieve the various Passes.
Also three more ideas:
-Add a lighting linking check box next to the Passes you want to have a separate pass for each light in the scene.
-Add a “Linear Gamma” checkbox next to passes you want it to effect. It would add a gamma correct node with a value of .445 right before the frame buffer. (In compositing you throw a color corrector with a 2.2 Gamma value at the end of the chain, makes it work with Linear workflow.)
-Finally a “Throw into Bin” drop down menu to select the Bin you want the selected Materials to be added into. Maybe a “Create Extra Bin” checkbox as well for all the extra materials created to achieve all the custom buffer Presets.
I know I proposed a lot, but that is because I see lots of potential. Again, feel free to email me or get back to me here. I really want to do what I can to help out with this.