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79 lines
1.5 KiB
79 lines
1.5 KiB
enum precision |
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{ |
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packed_highp, |
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packed_mediump, |
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packed_lowp, |
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aligned_highp, |
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aligned_mediump, |
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aligned_lowp, |
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aligned = aligned_highp, |
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highp = packed_highp, |
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mediump = packed_mediump, |
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lowp = packed_lowp, |
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packed = packed_highp, |
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defaultp = highp |
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}; |
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template<typename T, precision P = defaultp> struct vec2; |
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template<typename T> |
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struct _swizzle_base0 |
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{ |
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char _buffer[1]; |
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}; |
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template<typename T, precision P, int E0, int E1, int E2, int E3> |
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struct _swizzle_base1 : public _swizzle_base0<T> |
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{ |
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}; |
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template<typename T, precision P, int E0, int E1> |
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struct _swizzle_base1<T, P, E0,E1,-1,-2> : public _swizzle_base0<T> |
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{ |
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}; |
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template<typename T, precision P, int E0, int E1, int E2, int E3, int DUPLICATE_ELEMENTS> |
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struct _swizzle_base2 : public _swizzle_base1<T, P, E0,E1,E2,E3> |
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{ |
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}; |
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template<typename T, precision P, int E0, int E1, int E2, int E3> |
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struct _swizzle_base2<T, P, E0,E1,E2,E3, 1> : public _swizzle_base1<T, P, E0,E1,E2,E3> |
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{ |
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}; |
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template<typename T, precision P, int E0, int E1, int E2, int E3> |
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struct _swizzle : public _swizzle_base2<T, P, E0, E1, E2, E3, (E0 == E1 || E0 == E2 || E0 == E3 || E1 == E2 || E1 == E3 || E2 == E3)> |
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{ |
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}; |
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template<typename T, precision P> |
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struct vec2 |
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{ |
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constexpr vec2(T x, T y) : |
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x(x), y(y) |
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{} |
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union |
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{ |
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struct { T x, y; }; |
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struct { _swizzle<T, P, 0,0,-1,-2> xx; }; |
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}; |
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}; |
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typedef vec2<float, defaultp> float2; |
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// Visual C++ has a bug generating the error: fatal error C1001: An internal error has occurred in the compiler. |
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float2 const Bar(1.f, 1.f); |
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int main() |
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{ |
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return 0; |
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}
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