Blend minmax extension

Short question:

Do i understand it correctly, that FUNC_ADD_EXT is the default blending equation, and that this token is only introduced to be able to disable MIN_EXT or MAX_EXT ?


Yes, the extension introduces a new function, glBlendEquationEXT, where the default mode is FUNC_ADD_EXT but you can set it to MIN_EXT or MAX_EXT. This function is also used by other extensions such as EXT_blend_subtract or EXT_blend_logic_op.