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Merge pull request #950 from amaury-ml/neon-func

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More simd/Neon functions #950
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Christophe 2019-11-02 11:17:26 +01:00 committed by GitHub
commit c11944cf02
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66
glm/detail/func_geometric_simd.inl
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@ -96,4 +96,70 @@ namespace detail
}//namespace detail
}//namespace glm
#elif GLM_ARCH & GLM_ARCH_NEON_BIT
namespace glm{
namespace detail
{
template<qualifier Q>
struct compute_length<4, float, Q, true>
{
GLM_FUNC_QUALIFIER static float call(vec<4, float, Q> const& v)
{
return compute_dot<vec<4, float, Q>, float, true>::call(v, v);
}
};
template<qualifier Q>
struct compute_distance<4, float, Q, true>
{
GLM_FUNC_QUALIFIER static float call(vec<4, float, Q> const& p0, vec<4, float, Q> const& p1)
{
return compute_length<4, float, Q, true>::call(p1 - p0);
}
};
template<qualifier Q>
struct compute_dot<vec<4, float, Q>, float, true>
{
GLM_FUNC_QUALIFIER static float call(vec<4, float, Q> const& x, vec<4, float, Q> const& y)
{
#if GLM_ARCH & GLM_ARCH_ARMV8_BIT
float32x4_t v = vmulq_f32(x.data, y.data);
v = vpaddq_f32(v, v);
v = vpaddq_f32(v, v);
return vgetq_lane_f32(v, 0);
#else // Armv7a with Neon
float32x4_t p = vmulq_f32(x.data, y.data);
float32x2_t v = vpadd_f32(vget_low_f32(p), vget_high_f32(p));
v = vpadd_f32(v, v);
return vget_lane_f32(v, 0);
#endif
}
};
template<qualifier Q>
struct compute_normalize<4, float, Q, true>
{
GLM_FUNC_QUALIFIER static vec<4, float, Q> call(vec<4, float, Q> const& v)
{
float32x4_t p = vmulq_f32(v.data, v.data);
#if GLM_ARCH & GLM_ARCH_ARMV8_BIT
p = vpaddq_f32(p, p);
p = vpaddq_f32(p, p);
#else
float32x2_t t = vpadd_f32(vget_low_f32(p), vget_high_f32(p));
t = vpadd_f32(t, t);
p = vcombine_f32(t, t);
#endif
float32x4_t vd = vrsqrteq_f32(p);
vec<4, float, Q> Result;
Result.data = vmulq_f32(v, vd);
return Result;
}
};
}//namespace detail
}//namespace glm
#endif//GLM_ARCH & GLM_ARCH_SSE2_BIT

37
glm/detail/func_matrix_simd.inl
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@ -91,4 +91,41 @@ namespace detail
# endif
}//namespace glm
#elif GLM_ARCH & GLM_ARCH_NEON_BIT
namespace glm {
#if GLM_LANG & GLM_LANG_CXX11_FLAG
template <qualifier Q>
GLM_FUNC_QUALIFIER
typename std::enable_if<detail::is_aligned<Q>::value, mat<4, 4, float, Q>>::type
operator*(mat<4, 4, float, Q> const & m1, mat<4, 4, float, Q> const & m2)
{
auto MulRow = [&](int l) {
float32x4_t const SrcA = m2[l].data;
#if GLM_ARCH & GLM_ARCH_ARMV8_BIT
float32x4_t r= vmulq_laneq_f32(m1[0].data, SrcA, 0);
r = vaddq_f32(r, vmulq_laneq_f32(m1[1].data, SrcA, 1));
r = vaddq_f32(r, vmulq_laneq_f32(m1[2].data, SrcA, 2));
r = vaddq_f32(r, vmulq_laneq_f32(m1[3].data, SrcA, 3));
#else
float32x4_t r= vmulq_f32(m1[0].data, vdupq_n_f32(vgetq_lane_f32(SrcA, 0)));
r = vaddq_f32(r, vmulq_f32(m1[1].data, vdupq_n_f32(vgetq_lane_f32(SrcA, 1))));
r = vaddq_f32(r, vmulq_f32(m1[2].data, vdupq_n_f32(vgetq_lane_f32(SrcA, 2))));
r = vaddq_f32(r, vmulq_f32(m1[3].data, vdupq_n_f32(vgetq_lane_f32(SrcA, 3))));
#endif
return r;
};
mat<4, 4, float, aligned_highp> Result;
Result[0].data = MulRow(0);
Result[1].data = MulRow(1);
Result[2].data = MulRow(2);
Result[3].data = MulRow(3);
return Result;
}
#endif // CXX11
}//namespace glm
#endif