SKIP: FAILED


Validation Failure:

Compilation failed: 

program_source:9:15: error: use of undeclared identifier 'arg_0'
  float res = arg_0.sample_compare(arg_1, float2(), 1, 1.0f, level(0));
              ^
program_source:9:36: error: use of undeclared identifier 'arg_1'
  float res = arg_0.sample_compare(arg_1, float2(), 1, 1.0f, level(0));
                                   ^