#include #include using namespace metal; struct Uniforms { float2 ah; float2 bh; float2 af; float2 bf; }; struct Inputs { }; struct Outputs { float4 sk_FragColor [[color(0)]]; }; float cross_hh2h2(float2 a, float2 b) { return a.x * b.y - a.y * b.x; } float cross_ff2f2(float2 a, float2 b) { return a.x * b.y - a.y * b.x; } fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { Outputs _out; (void)_out; _out.sk_FragColor.x = cross_hh2h2(_uniforms.ah, _uniforms.bh); _out.sk_FragColor.y = cross_ff2f2(_uniforms.af, _uniforms.bf); return _out; }