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Udon Memo

Restriction on variable initialization in .data segment

Initialization of variables in the .data segment is possible Integer, float, and string types only.

OK

        __const_3: %SystemInt32, 0
        ret_addr: %SystemUInt32, 0xFFFFFF
        __const_1: %SystemSingle, 1.0
        __const_6: %SystemString, "Renderer"

NG

        __const_2: %SystemBoolean, true # null only

Udon instruction byte code size

1byte

nop, pop, copy

5byte

push, jump_if_false, jump, extern, jump_indirect

Avoid restrictions on variable initialization

If you use [type name].Parse ([string representing a constant]), you can initialize anything other than int, float, and string.

        __const_39: %SystemBoolean, null
...
        PUSH, "true"
        PUSH, __const_39
        EXTERN, "SystemBoolean.__Parse__SystemString__SystemBoolean"