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Add support for x,y,z,w accessors to fvec4SIMD.

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This is done via a union. It must be enabled with GLM_SIMD_ENABLE_XYZW_UNION. A nameless struct/union warning in VC (C4201) is explicitly disabled with the "pragma warning(push/pop)" system.

Allowing xyzw access makes it much easier to toggle between SIMD and non-SIMD builds.
This commit is contained in:
Dave Reid 2012-12-21 07:40:03 +10:00
parent 560b474008
commit 87c90590be
1 changed files with 23 additions and 1 deletions
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22
glm/gtx/simd_vec4.hpp
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@ -54,6 +54,14 @@
# pragma message("GLM: GLM_GTX_simd_vec4 extension included")
#endif
// Warning silencer for nameless struct/union.
#if (GLM_COMPILER & GLM_COMPILER_VC)
# pragma warning(push)
# pragma warning(disable:4201) // warning C4201: nonstandard extension used : nameless struct/union
#endif
namespace glm{
namespace detail
{
@ -69,7 +77,15 @@ namespace detail
typedef fvec4SIMD type;
typedef tvec4<bool> bool_type;
#ifdef GLM_SIMD_ENABLE_XYZW_UNION
union
{
__m128 Data;
struct {float x, y, z, w;};
};
#else
__m128 Data;
#endif
//////////////////////////////////////
// Implicit basic constructors
@ -490,6 +506,12 @@ namespace detail
#include "simd_vec4.inl"
#if (GLM_COMPILER & GLM_COMPILER_VC)
# pragma warning(pop)
#endif
#endif//(GLM_ARCH != GLM_ARCH_PURE)
#endif//GLM_GTX_simd_vec4