third_party/skia/resources/sksl/errors/SwizzleConstantOutput.sksl - cobalt - Git at Google

 void main() {
     float4 test = float4(1);
     test.xyz0 = float4(1);
 }

 /*%%*
 cannot assign to this expression
 *%%*/
	void main() {
	float4 test = float4(1);
	test.xyz0 = float4(1);
	}

	/%%
	cannot assign to this expression
	%%/