SKIP: FAILED #version 310 es precision mediump float; struct buf0 { float two; }; vec4 tint_symbol = vec4(0.0f, 0.0f, 0.0f, 0.0f); layout (binding = 0) uniform buf0_1 { float two; } x_8; vec4 x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f); void main_1() { float a = 0.0f; float b = 0.0f; float x_33 = tint_symbol.x; a = ddx(cos(x_33)); float x_37 = x_8.two; b = mix(2.0f, x_37, a); if (((b >= 1.899999976f) & (b <= 2.099999905f))) { x_GLF_color = vec4(1.0f, 0.0f, 0.0f, 1.0f); } else { x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f); } return; } struct main_out { vec4 x_GLF_color_1; }; struct tint_symbol_4 { vec4 tint_symbol_2; }; struct tint_symbol_5 { vec4 x_GLF_color_1; }; main_out tint_symbol_1_inner(vec4 tint_symbol_2) { tint_symbol = tint_symbol_2; main_1(); main_out tint_symbol_6 = main_out(x_GLF_color); return tint_symbol_6; } tint_symbol_5 tint_symbol_1(tint_symbol_4 tint_symbol_3) { main_out inner_result = tint_symbol_1_inner(tint_symbol_3.tint_symbol_2); tint_symbol_5 wrapper_result = tint_symbol_5(vec4(0.0f, 0.0f, 0.0f, 0.0f)); wrapper_result.x_GLF_color_1 = inner_result.x_GLF_color_1; return wrapper_result; } layout(location = 0) out vec4 x_GLF_color_1; void main() { tint_symbol_4 inputs; inputs.tint_symbol_2 = gl_FragCoord; tint_symbol_5 outputs; outputs = tint_symbol_1(inputs); x_GLF_color_1 = outputs.x_GLF_color_1; } Error parsing GLSL shader: ERROR: 0:18: 'ddx' : no matching overloaded function found ERROR: 0:18: '' : compilation terminated ERROR: 2 compilation errors. No code generated.