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WIP swizzle. Note: glm::dot() now working for swizzled vec3, but mysteriously not for vec2 or vec4.

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master
athile ago%!(EXTRA string=14 years)
parent 2851081b66
commit 6dee4eabc4
2 changed files with 73 additions and 34 deletions
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  1. 73
      glm/core/_swizzle.hpp
  2. 34
      test/core/core_type_vec3.cpp

73
glm/core/_swizzle.hpp
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@ -242,58 +242,62 @@ namespace detail
{
using swizzle_base<swizzle4_3<T,P,E0,E1,E2>,T,P,4,E0,E1,E2,0,(E0==E1||E0==E2||E1==E2)>::operator=;
P cast() const { return P(this->elem(E0), this->elem(E1), this->elem(E2)); }
operator P () { return cast(); }
operator P () const { return cast(); }
};
//
// To prevent the C++ syntax from getting *completely* overwhelming, define some alias macros
//
#define _GLM_SWIZZLE_TEMPLATE1 template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0>
#define _GLM_SWIZZLE_TEMPLATE2 template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0, typename S1,int F0, int F1, int F2, int F3, int D1>
#define _GLM_SWIZZLE_TYPE1 glm::detail::swizzle_base<S0,T,P,N,E0,E1,E2,E3,D0>
#define _GLM_SWIZZLE_TYPE2 glm::detail::swizzle_base<S1,T,P,N,F0,F1,F2,F3,D1>
#define _GLM_SWIZZLE_BINARY_OPERATOR_IMPLEMENTATION(OPERAND)\
template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0, typename S1,int F0, int F1, int F2, int F3, int D1> \
typename P operator OPERAND ( \
const glm::detail::swizzle_base<S0,T,P,N,E0,E1,E2,E3,D0>& a, \
const glm::detail::swizzle_base<S1,T,P,N,F0,F1,F2,F3,D1>& b) \
_GLM_SWIZZLE_TEMPLATE2 \
typename P operator OPERAND ( const _GLM_SWIZZLE_TYPE1& a, const _GLM_SWIZZLE_TYPE2& b) \
{ \
return static_cast<const S0&>(a).cast() OPERAND static_cast<const S1&>(b).cast(); \
} \
\
template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0> \
typename P operator OPERAND ( \
const glm::detail::swizzle_base<S0,T,P,N,E0,E1,E2,E3,D0>& a, \
const typename P& b) \
_GLM_SWIZZLE_TEMPLATE1 \
typename P operator OPERAND ( const _GLM_SWIZZLE_TYPE1& a, const typename P& b) \
{ \
return static_cast<const S0&>(a).cast() OPERAND b; \
} \
\
template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0> \
typename P operator OPERAND ( \
const typename P& a, \
const glm::detail::swizzle_base<S0,T,P,N,E0,E1,E2,E3,D0>& b) \
_GLM_SWIZZLE_TEMPLATE1 \
typename P operator OPERAND ( const typename P& a, const _GLM_SWIZZLE_TYPE1& b) \
{ \
return a OPERAND static_cast<const S0&>(b).cast(); \
}
#define _GLM_SWIZZLE_SCALAR_BINARY_OPERATOR_IMPLEMENTATION(OPERAND)\
template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0> \
typename P operator OPERAND ( \
const glm::detail::swizzle_base<S0,T,P,N,E0,E1,E2,E3,D0>& a, \
const typename T& b) \
_GLM_SWIZZLE_TEMPLATE1 \
typename P operator OPERAND ( const _GLM_SWIZZLE_TYPE1& a, const typename T& b) \
{ \
return static_cast<const S0&>(a).cast() OPERAND b; \
} \
\
template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0> \
typename P operator OPERAND ( \
const typename T& a, \
const glm::detail::swizzle_base<S0,T,P,N,E0,E1,E2,E3,D0>& b) \
_GLM_SWIZZLE_TEMPLATE1 \
typename P operator OPERAND ( const typename T& a, const _GLM_SWIZZLE_TYPE1& b) \
{ \
return a OPERAND static_cast<const S0&>(b).cast(); \
}
//
// To prevent the C++ syntax from getting *completely* overwhelming, define some alias macros
//
#define _GLM_SWIZZLE_TEMPLATE1 template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0>
#define _GLM_SWIZZLE_TEMPLATE2 template <typename T, typename P, int N, typename S0, int E0, int E1, int E2, int E3, int D0, typename S1,int F0, int F1, int F2, int F3, int D1>
#define _GLM_SWIZZLE_TYPE1 glm::detail::swizzle_base<S0,T,P,N,E0,E1,E2,E3,D0>
#define _GLM_SWIZZLE_TYPE2 glm::detail::swizzle_base<S1,T,P,N,F0,F1,F2,F3,D1>
#define _GLM_SWIZZLE_FUNCTION2(RETURN_TYPE,FUNCTION)\
_GLM_SWIZZLE_TEMPLATE2\
typename S0::RETURN_TYPE FUNCTION(const typename _GLM_SWIZZLE_TYPE1& a, const typename _GLM_SWIZZLE_TYPE2& b)\
{\
return FUNCTION(static_cast<const S0&>(a).cast(), static_cast<const S1&>(b).cast());\
}\
_GLM_SWIZZLE_TEMPLATE1\
typename S0::RETURN_TYPE FUNCTION(const typename _GLM_SWIZZLE_TYPE1& a, const typename S0::vec_type& b)\
{\
return FUNCTION(static_cast<const S0&>(a).cast(), b);\
}\
_GLM_SWIZZLE_TEMPLATE1\
typename S0::RETURN_TYPE FUNCTION(const typename S0::vec_type& a, const typename _GLM_SWIZZLE_TYPE1& b)\
{\
return FUNCTION(a, static_cast<const S0&>(b).cast());\
}
_GLM_SWIZZLE_TEMPLATE1 typename S0::vec_type operator- (typename S0::value_type a, const _GLM_SWIZZLE_TYPE1& b) { return a - b; }
@ -309,9 +313,10 @@ namespace detail
namespace glm
{
/*_GLM_SWIZZLE_TEMPLATE2 typename S0::value_type dot (const _GLM_SWIZZLE_TYPE1& a, const _GLM_SWIZZLE_TYPE2& b) { return dot(a.cast(), b.cast()); }
_GLM_SWIZZLE_TEMPLATE1 typename S0::value_type dot (const _GLM_SWIZZLE_TYPE1& a, const typename S0::vec_type& b) { return dot(a.cast(), b); }
_GLM_SWIZZLE_TEMPLATE1 typename S0::value_type dot (const typename S0::vec_type& a, const _GLM_SWIZZLE_TYPE1& b) { return dot(a, b.cast()); }*/
_GLM_SWIZZLE_FUNCTION2(value_type, dot);
_GLM_SWIZZLE_FUNCTION2(vec_type, abs);
}

34
test/core/core_type_vec3.cpp
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@ -196,6 +196,39 @@ int test_vec3_swizzle_operators()
return Error;
}
int test_vec3_swizzle_functions()
{
int Error = 0;
// vec3 - working as expected
glm::vec3 q, u, v;
u = glm::vec3(1, 2, 3);
v = glm::vec3(10, 20, 30);
glm::dot(u, v);
glm::dot(u.xyz, v.zyz);
glm::dot(u, v.zyx);
glm::dot(u.xyz, v);
// vec2 - not working! how is vec3 working and not vec2?
glm::vec2 a, b;
glm::dot(a, b);
glm::dot(a.xy, b.xy);
//glm::dot(u.xy, v.xy);
glm::dot(glm::vec4(1,2,3,4).xyz, v);
glm::vec4 r, s, t;
r = glm::vec4(1, 2, 3, 4);
s = glm::vec4(10, 20, 30, 40);
glm::dot(r, s);
//glm::dot(r.xyzw, s.xyzw);
//glm::dot(r.xyz, s.xyz);
return Error;
}
#if 0
using namespace glm;
@ -345,6 +378,7 @@ int main()
Error += test_vec3_swizzle3_3();
Error += test_vec3_swizzle_half();
Error += test_vec3_swizzle_operators();
Error += test_vec3_swizzle_functions();
return Error;
}

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