Here is a list of all documented enum values with links to the documentation:

• DIRECTIONAL_ALBEDO_ANALYTIC : GenOptions.h
• DIRECTIONAL_ALBEDO_MONTE_CARLO : GenOptions.h
• DIRECTIONAL_ALBEDO_TABLE : GenOptions.h
• SHADER_INTERFACE_COMPLETE : GenOptions.h
• SHADER_INTERFACE_REDUCED : GenOptions.h
• SPECULAR_ENVIRONMENT_FIS : GenOptions.h
• SPECULAR_ENVIRONMENT_NONE : GenOptions.h
• SPECULAR_ENVIRONMENT_PREFILTER : GenOptions.h
• TRANSMISSION_OPACITY : GenOptions.h
• TRANSMISSION_REFRACTION : GenOptions.h