resources/sksl/errors/SwizzleOnlyLiterals.rts - skia - Git at Google

 void func() { float x = 1.0; x = x.0; }

 /*%%*
 swizzle must refer to base expression
 *%%*/
	void func() { float x = 1.0; x = x.0; }

	/%%
	swizzle must refer to base expression
	%%/