diff options
Diffstat (limited to 'intern/cycles/util/util_simd.h')
| -rw-r--r-- | intern/cycles/util/util_simd.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/intern/cycles/util/util_simd.h b/intern/cycles/util/util_simd.h index a6880e77054..c8f794adfb3 100644 --- a/intern/cycles/util/util_simd.h +++ b/intern/cycles/util/util_simd.h @@ -74,9 +74,14 @@ template<size_t i0, size_t i1, size_t i2, size_t i3> ccl_device_inline const __m return _mm_shuffle_ps(a, b, _MM_SHUFFLE(i3, i2, i1, i0)); } -template<size_t i0, size_t i1, size_t i2, size_t i3> ccl_device_inline const __m128 shuffle(const __m128& b) +template<size_t i0, size_t i1, size_t i2, size_t i3> ccl_device_inline const __m128 shuffle(const __m128& a) { - return _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(b), _MM_SHUFFLE(i3, i2, i1, i0))); + return _mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(a), _MM_SHUFFLE(i3, i2, i1, i0))); +} + +template<size_t i0, size_t i1, size_t i2, size_t i3> ccl_device_inline const __m128i shuffle(const __m128i& a) +{ + return _mm_shuffle_epi32(a, _MM_SHUFFLE(i3, i2, i1, i0)); } /* Blend 2 vectors based on mask: (a[i] & mask[i]) | (b[i] & ~mask[i]) */ @@ -108,6 +113,16 @@ template<size_t N> ccl_device_inline const __m128i broadcast(const __m128i& a) return _mm_shuffle_epi32(a, _MM_SHUFFLE(N, N, N, N)); } +ccl_device_inline const __m128 uint32_to_float(const __m128i &in) +{ + __m128i a = _mm_srli_epi32(in, 16); + __m128i b = _mm_and_si128(in, _mm_set1_epi32(0x0000ffff)); + __m128i c = _mm_or_si128(a, _mm_set1_epi32(0x53000000)); + __m128 d = _mm_cvtepi32_ps(b); + __m128 e = _mm_sub_ps(_mm_castsi128_ps(c), _mm_castsi128_ps(_mm_set1_epi32(0x53000000))); + return _mm_add_ps(e, d); +} + #endif /* __KERNEL_SSE2__ */ CCL_NAMESPACE_END |