OSL setmessage/getmessage support
Please, add normal setmessage/getmessage support into OSL. Currently, there only one use case for getmessage: getting trace data. The missing part is saving small values for object and retrieve them in another sample points/shaders.
This is higly needed to do custom caching of per-object calcualtions in OSL shader
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I'd like to see support in Cycles for strings in the node graph, to plug into texture names or shader settings. This could be how get/set message manifests itself in Cycles.