e76ae39ae2
This will allow us to make use of the selection control support in spirv and the GL support provided by EXT_control_flow_attributes. Note this only supports if-statements as we dont support switches in NIR. Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108841