New to V-Ray 5 for Maya is full support for ACEScg, which promises to unify visual effects workflows. Discover why it’s important plus how to use it in V-Ray.
ACEScg . . . and more
ACEScg is just one of the new features of V-Ray for Maya. In this webinar, Chaos Group’s Cory Holm will talk you through how to make the most of the new feature — and much more.
How will ACES affect my workflow?
Technically, if you follow a few steps, it should not affect your workflow much at all. You need to realize that your textures, HDRs, etc, all need to be converted to ACEScg so that you get the expected colors on the output. This is taken care of in a setting in Maya, which in turn, we adapt in V-Ray to do all the conversion for you at the end.
For your input images, we support the following color spaces natively: Raw, ACEScg, scene-linear or gamma Rec. 709, and sRGB. If you need any other input color spaces, you will need to use OCIO. You have to be mindful of how Maya determines a texture's color space. In the "Color Management" settings, you can set up a list of rules that assign a color space to a texture based on patterns in its filename. This is the primary way to assign input color space to a texture in Maya.
If you've enabled OCIO, you also have the option of enabling "Use OCIO input color space rules," which add all the color spaces from the OCIO configuration as an implicit rule in Maya, so if your image has an OCIO color space name in its filename, that color space will be automatically assigned. Finally, if you have a few files that do not fit the rule-based system, you can override the color space of a specific file node from its attributes. Either way, V-Ray will respect whatever the image's input color space is set to and will not try to guess it.