SKIP: FAILED #version 310 es precision mediump float; void dpdy_a8b56e() { vec2 res = ddy(vec2(0.0f, 0.0f)); } void fragment_main() { dpdy_a8b56e(); return; } void main() { fragment_main(); } Error parsing GLSL shader: ERROR: 0:5: 'ddy' : no matching overloaded function found ERROR: 0:5: '=' : cannot convert from ' const float' to ' temp mediump 2-component vector of float' ERROR: 0:5: '' : compilation terminated ERROR: 3 compilation errors. No code generated.