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