Nano Experiments #1
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…on and off. - added OCIO_ARCHIVE_SUPPORT preprocessor switch - And the library now compiles with or without LUT and/or OCIOZ support, shaving off 40% of dll size.
… and baking the values in the OpenColorABI.h, where it makes more sense.
…conversion LUT just through the preprocessor macros without re-compiling the imath library. So exposed OCIO_USE_HALF_LOOKUP_TABLE cmake option to turn it on/off
…which is pretty large - more cleanup
…med by what. - Looks like in some files (such as ocioyaml.cpp) the string manipulation for exception messages takes ~30% of the binary. - Also heavy usage of smart pointers and other dereferencing is contributing to a degree (std::shared_pt, yaml iterators). It'd be a good idea to extract raw pointers and use them if they will be used many many times within a function) - With changing some of the functions, it's possible to help compiler to do return value optimizations. - Also some back and forth string conversions (between std::string, char*, std::stringstream etc) in many places, we can implement overloads of functions taking different variants, limiting the conversion code to a single instance. - some more ideas
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Adding options to turn off various features to reduce OCIO size
When all are turned off, the dll size goes down from 4468 KB to 2381 KB