SKIP: FAILED #version 310 es precision mediump float; int x_1[1] = int[1](0); void main_1() { int x_4 = x_1[0]; return; } void tint_symbol(uint x_1_param) { x_1[0] = int(x_1_param); main_1(); } void main() { tint_symbol(uint(gl_SampleMask[0])); return; } Error parsing GLSL shader: ERROR: 0:16: 'gl_SampleMask' : required extension not requested: GL_OES_sample_variables ERROR: 0:16: '' : compilation terminated ERROR: 2 compilation errors. No code generated.