xref: /aosp_15_r20/external/skia/tests/sksl/workarounds/NegatedAtan.glsl (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17) 
1*c8dee2aaSAndroid Build Coastguard Worker#version 400
2*c8dee2aaSAndroid Build Coastguard Workerout vec4 sk_FragColor;
3*c8dee2aaSAndroid Build Coastguard Workeruniform float unknownInput;
4*c8dee2aaSAndroid Build Coastguard Workervoid main() {
5*c8dee2aaSAndroid Build Coastguard Worker    vec2 x = vec2(unknownInput);
6*c8dee2aaSAndroid Build Coastguard Worker    sk_FragColor.x = atan(x.x, -1.0 * x.y);
7*c8dee2aaSAndroid Build Coastguard Worker}
8