1#include <metal_stdlib> 2#include <simd/simd.h> 3#ifdef __clang__ 4#pragma clang diagnostic ignored "-Wall" 5#endif 6using namespace metal; 7struct Uniforms { 8 half4 colorGreen; 9 half4 colorRed; 10}; 11struct Inputs { 12}; 13struct Outputs { 14 half4 sk_FragColor [[color(0)]]; 15}; 16 17thread bool operator==(const float2x2 left, const float2x2 right); 18thread bool operator!=(const float2x2 left, const float2x2 right); 19 20thread bool operator==(const float3x3 left, const float3x3 right); 21thread bool operator!=(const float3x3 left, const float3x3 right); 22 23thread bool operator==(const float4x4 left, const float4x4 right); 24thread bool operator!=(const float4x4 left, const float4x4 right); 25thread bool operator==(const float2x2 left, const float2x2 right) { 26 return all(left[0] == right[0]) && 27 all(left[1] == right[1]); 28} 29thread bool operator!=(const float2x2 left, const float2x2 right) { 30 return !(left == right); 31} 32thread bool operator==(const float3x3 left, const float3x3 right) { 33 return all(left[0] == right[0]) && 34 all(left[1] == right[1]) && 35 all(left[2] == right[2]); 36} 37thread bool operator!=(const float3x3 left, const float3x3 right) { 38 return !(left == right); 39} 40thread bool operator==(const float4x4 left, const float4x4 right) { 41 return all(left[0] == right[0]) && 42 all(left[1] == right[1]) && 43 all(left[2] == right[2]) && 44 all(left[3] == right[3]); 45} 46thread bool operator!=(const float4x4 left, const float4x4 right) { 47 return !(left == right); 48} 49 50template <typename T> 51matrix<T, 3, 3> mat3_inverse(matrix<T, 3, 3> m) { 52T 53 a00 = m[0].x, a01 = m[0].y, a02 = m[0].z, 54 a10 = m[1].x, a11 = m[1].y, a12 = m[1].z, 55 a20 = m[2].x, a21 = m[2].y, a22 = m[2].z, 56 b01 = a22*a11 - a12*a21, 57 b11 = -a22*a10 + a12*a20, 58 b21 = a21*a10 - a11*a20, 59 det = a00*b01 + a01*b11 + a02*b21; 60return matrix<T, 3, 3>( 61 b01, (-a22*a01 + a02*a21), ( a12*a01 - a02*a11), 62 b11, ( a22*a00 - a02*a20), (-a12*a00 + a02*a10), 63 b21, (-a21*a00 + a01*a20), ( a11*a00 - a01*a10)) * (1/det); 64} 65 66template <typename T> 67matrix<T, 2, 2> mat2_inverse(matrix<T, 2, 2> m) { 68return matrix<T, 2, 2>(m[1].y, -m[0].y, -m[1].x, m[0].x) * (1/determinant(m)); 69} 70 71template <typename T> 72matrix<T, 4, 4> mat4_inverse(matrix<T, 4, 4> m) { 73T 74 a00 = m[0].x, a01 = m[0].y, a02 = m[0].z, a03 = m[0].w, 75 a10 = m[1].x, a11 = m[1].y, a12 = m[1].z, a13 = m[1].w, 76 a20 = m[2].x, a21 = m[2].y, a22 = m[2].z, a23 = m[2].w, 77 a30 = m[3].x, a31 = m[3].y, a32 = m[3].z, a33 = m[3].w, 78 b00 = a00*a11 - a01*a10, 79 b01 = a00*a12 - a02*a10, 80 b02 = a00*a13 - a03*a10, 81 b03 = a01*a12 - a02*a11, 82 b04 = a01*a13 - a03*a11, 83 b05 = a02*a13 - a03*a12, 84 b06 = a20*a31 - a21*a30, 85 b07 = a20*a32 - a22*a30, 86 b08 = a20*a33 - a23*a30, 87 b09 = a21*a32 - a22*a31, 88 b10 = a21*a33 - a23*a31, 89 b11 = a22*a33 - a23*a32, 90 det = b00*b11 - b01*b10 + b02*b09 + b03*b08 - b04*b07 + b05*b06; 91return matrix<T, 4, 4>( 92 a11*b11 - a12*b10 + a13*b09, 93 a02*b10 - a01*b11 - a03*b09, 94 a31*b05 - a32*b04 + a33*b03, 95 a22*b04 - a21*b05 - a23*b03, 96 a12*b08 - a10*b11 - a13*b07, 97 a00*b11 - a02*b08 + a03*b07, 98 a32*b02 - a30*b05 - a33*b01, 99 a20*b05 - a22*b02 + a23*b01, 100 a10*b10 - a11*b08 + a13*b06, 101 a01*b08 - a00*b10 - a03*b06, 102 a30*b04 - a31*b02 + a33*b00, 103 a21*b02 - a20*b04 - a23*b00, 104 a11*b07 - a10*b09 - a12*b06, 105 a00*b09 - a01*b07 + a02*b06, 106 a31*b01 - a30*b03 - a32*b00, 107 a20*b03 - a21*b01 + a22*b00) * (1/det); 108} 109fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) { 110 Outputs _out; 111 (void)_out; 112 const float2x2 matrix2x2 = float2x2(float2(1.0, 2.0), float2(3.0, 4.0)); 113 float2x2 inv2x2 = float2x2(float2(-2.0, 1.0), float2(1.5, -0.5)); 114 float3x3 inv3x3 = float3x3(float3(-24.0, 18.0, 5.0), float3(20.0, -15.0, -4.0), float3(-5.0, 4.0, 1.0)); 115 float4x4 inv4x4 = float4x4(float4(-2.0, -0.5, 1.0, 0.5), float4(1.0, 0.5, 0.0, -0.5), float4(-8.0, -1.0, 2.0, 2.0), float4(3.0, 0.5, -1.0, -0.5)); 116 float Zero = float(_uniforms.colorGreen.z); 117 _out.sk_FragColor = (((((float2x2(float2(-2.0, 1.0), float2(1.5, -0.5)) == inv2x2 && float3x3(float3(-24.0, 18.0, 5.0), float3(20.0, -15.0, -4.0), float3(-5.0, 4.0, 1.0)) == inv3x3) && float4x4(float4(-2.0, -0.5, 1.0, 0.5), float4(1.0, 0.5, 0.0, -0.5), float4(-8.0, -1.0, 2.0, 2.0), float4(3.0, 0.5, -1.0, -0.5)) == inv4x4) && mat3_inverse(float3x3(float3(1.0, 2.0, 3.0), float3(4.0, 5.0, 6.0), float3(7.0, 8.0, 9.0))) != inv3x3) && mat2_inverse(matrix2x2 + (float2x2(1.0, 1.0, 1.0, 1.0) * Zero)) == inv2x2) && mat3_inverse(float3x3(float3(1.0, 2.0, 3.0), float3(0.0, 1.0, 4.0), float3(5.0, 6.0, 0.0)) + (float3x3(1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0) * Zero)) == inv3x3) && mat4_inverse(float4x4(float4(1.0, 0.0, 0.0, 1.0), float4(0.0, 2.0, 1.0, 2.0), float4(2.0, 1.0, 0.0, 1.0), float4(2.0, 0.0, 1.0, 4.0)) + (float4x4(1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0) * Zero)) == inv4x4 ? _uniforms.colorGreen : _uniforms.colorRed; 118 return _out; 119} 120