SKIP: FAILED

#version 310 es
precision mediump float;

layout(location = 0) out int loc0_1;
layout(location = 1) out uint loc1_1;
layout(location = 2) out float loc2_1;
layout(location = 3) out vec4 loc3_1;
struct FragmentOutputs {
  int loc0;
  float frag_depth;
  uint loc1;
  float loc2;
  uint sample_mask;
  vec4 loc3;
};

FragmentOutputs tint_symbol() {
  FragmentOutputs tint_symbol_1 = FragmentOutputs(1, 2.0f, 1u, 1.0f, 2u, vec4(1.0f, 2.0f, 3.0f, 4.0f));
  return tint_symbol_1;
}

void main() {
  FragmentOutputs inner_result = tint_symbol();
  loc0_1 = inner_result.loc0;
  gl_FragDepth = inner_result.frag_depth;
  loc1_1 = inner_result.loc1;
  loc2_1 = inner_result.loc2;
  gl_SampleMask[0] = inner_result.sample_mask;
  loc3_1 = inner_result.loc3;
  return;
}
Error parsing GLSL shader:
ERROR: 0:28: 'gl_SampleMask' : required extension not requested: GL_OES_sample_variables
ERROR: 0:28: '' : compilation terminated 
ERROR: 2 compilation errors.  No code generated.