This is a feature request to add the blend equations as seen in GL_KHR_blend_equation_advanced (https://www.khronos.org/registry/OpenGL/extensions/KHR/KHR_blend_equation_advanced.txt).

These equations cannot be supported by all hardware. From the discussion on the mailing list at https://lists.w3.org/Archives/Public/public-gpu/2019Aug/0017.html, if extensions are realized as feature flags and written inline into the spec. If not, then ideally as an optional feature and the enums exist in the first spec.