qualifier.hpp

#pragma once

#include "setup.hpp"

namespace glm
{
        enum qualifier
        {
                packed_highp, 
                packed_mediump, 
                packed_lowp, 

#               if GLM_CONFIG_ALIGNED_GENTYPES == GLM_ENABLE
                        aligned_highp, 
                        aligned_mediump, 
                        aligned_lowp, // ///< Typed data is aligned in memory allowing SIMD optimizations and operations are executed with high precision in term of ULPs to maximize performance
                        aligned = aligned_highp, 
#               endif

                highp = packed_highp, 
                mediump = packed_mediump, 
                lowp = packed_lowp, 
                packed = packed_highp, 

#               if GLM_CONFIG_ALIGNED_GENTYPES == GLM_ENABLE && defined(GLM_FORCE_DEFAULT_ALIGNED_GENTYPES)
                        defaultp = aligned_highp
#               else
                        defaultp = highp
#               endif
        };

        typedef qualifier precision;

        template<length_t L, typename T, qualifier Q = defaultp> struct vec;
        template<length_t C, length_t R, typename T, qualifier Q = defaultp> struct mat;
        template<typename T, qualifier Q = defaultp> struct qua;

#       if GLM_HAS_TEMPLATE_ALIASES
                template <typename T, qualifier Q = defaultp> using tvec1 = vec<1, T, Q>;
                template <typename T, qualifier Q = defaultp> using tvec2 = vec<2, T, Q>;
                template <typename T, qualifier Q = defaultp> using tvec3 = vec<3, T, Q>;
                template <typename T, qualifier Q = defaultp> using tvec4 = vec<4, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat2x2 = mat<2, 2, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat2x3 = mat<2, 3, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat2x4 = mat<2, 4, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat3x2 = mat<3, 2, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat3x3 = mat<3, 3, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat3x4 = mat<3, 4, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat4x2 = mat<4, 2, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat4x3 = mat<4, 3, T, Q>;
                template <typename T, qualifier Q = defaultp> using tmat4x4 = mat<4, 4, T, Q>;
                template <typename T, qualifier Q = defaultp> using tquat = qua<T, Q>;
#       endif

namespace detail
{
        template<glm::qualifier P>
        struct is_aligned
        {
                static const bool value = false;
        };

#       if GLM_CONFIG_ALIGNED_GENTYPES == GLM_ENABLE
                template<>
                struct is_aligned<glm::aligned_lowp>
                {
                        static const bool value = true;
                };

                template<>
                struct is_aligned<glm::aligned_mediump>
                {
                        static const bool value = true;
                };

                template<>
                struct is_aligned<glm::aligned_highp>
                {
                        static const bool value = true;
                };
#       endif

        template<length_t L, typename T, bool is_aligned>
        struct storage
        {
                typedef struct type {
                        T data[L];
                } type;
        };

#       if GLM_HAS_ALIGNOF
                template<length_t L, typename T>
                struct storage<L, T, true>
                {
                        typedef struct alignas(L * sizeof(T)) type {
                                T data[L];
                        } type;
                };

                template<typename T>
                struct storage<3, T, true>
                {
                        typedef struct alignas(4 * sizeof(T)) type {
                                T data[4];
                        } type;
                };
#       endif

#       if GLM_ARCH & GLM_ARCH_SSE2_BIT
        template<>
        struct storage<4, float, true>
        {
                typedef glm_f32vec4 type;
        };

        template<>
        struct storage<4, int, true>
        {
                typedef glm_i32vec4 type;
        };

        template<>
        struct storage<4, unsigned int, true>
        {
                typedef glm_u32vec4 type;
        };

        template<>
        struct storage<2, double, true>
        {
                typedef glm_f64vec2 type;
        };

        template<>
        struct storage<2, detail::int64, true>
        {
                typedef glm_i64vec2 type;
        };

        template<>
        struct storage<2, detail::uint64, true>
        {
                typedef glm_u64vec2 type;
        };
#       endif

#       if (GLM_ARCH & GLM_ARCH_AVX_BIT)
        template<>
        struct storage<4, double, true>
        {
                typedef glm_f64vec4 type;
        };
#       endif

#       if (GLM_ARCH & GLM_ARCH_AVX2_BIT)
        template<>
        struct storage<4, detail::int64, true>
        {
                typedef glm_i64vec4 type;
        };

        template<>
        struct storage<4, detail::uint64, true>
        {
                typedef glm_u64vec4 type;
        };
#       endif

#       if GLM_ARCH & GLM_ARCH_NEON_BIT
        template<>
        struct storage<4, float, true>
        {
                typedef glm_f32vec4 type;
        };

        template<>
        struct storage<4, int, true>
        {
                typedef glm_i32vec4 type;
        };

        template<>
        struct storage<4, unsigned int, true>
        {
                typedef glm_u32vec4 type;
        };
#       endif

        enum genTypeEnum
        {
                GENTYPE_VEC,
                GENTYPE_MAT,
                GENTYPE_QUAT
        };

        template <typename genType>
        struct genTypeTrait
        {};

        template <length_t C, length_t R, typename T>
        struct genTypeTrait<mat<C, R, T> >
        {
                static const genTypeEnum GENTYPE = GENTYPE_MAT;
        };

        template<typename genType, genTypeEnum type>
        struct init_gentype
        {
        };

        template<typename genType>
        struct init_gentype<genType, GENTYPE_QUAT>
        {
                GLM_FUNC_QUALIFIER GLM_CONSTEXPR static genType identity()
                {
                        return genType(1, 0, 0, 0);
                }
        };

        template<typename genType>
        struct init_gentype<genType, GENTYPE_MAT>
        {
                GLM_FUNC_QUALIFIER GLM_CONSTEXPR static genType identity()
                {
                        return genType(1);
                }
        };
}//namespace detail
}//namespace glm