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MaterialX supports the ability to tag an a color3 or color4 input value with a "colorspace". This is the color space of the input value which may be a uniform or an image. At render time the value should be converted to the rendering color space (defined by the renderer). The minimum colorspace tags currently proposed for support are those defined by ACESCg 1.2 with static implementations provided as part of the MaterialX distribution. A longer term proposal goal is to support OCIO as part of MaterialX. This would provide both specification of available valid colorspaces as well as the possibility to use OCIO code generation as part MaterialX code generation. This dependency is beyond the initial proposal to just transport "colorspace" metadata is in a lossless manner.
1.1 Existing Support
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