diff options
Diffstat (limited to 'intern/cycles/util/util_half.h')
| -rw-r--r-- | intern/cycles/util/util_half.h | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/intern/cycles/util/util_half.h b/intern/cycles/util/util_half.h index 76941569bd2..f4bac9888a5 100644 --- a/intern/cycles/util/util_half.h +++ b/intern/cycles/util/util_half.h @@ -56,7 +56,7 @@ ccl_device_inline void float4_store_half(half *h, float4 f, float scale) * assumes no negative, no nan, no inf, and sets denormal to 0 */ union { uint i; float f; } in; float fscale = f[i] * scale; - in.f = (fscale > 0.0f)? ((fscale < 65500.0f)? fscale: 65500.0f): 0.0f; + in.f = (fscale > 0.0f)? ((fscale < 65504.0f)? fscale: 65504.0f): 0.0f; int x = in.i; int absolute = x & 0x7FFFFFFF; @@ -68,20 +68,20 @@ ccl_device_inline void float4_store_half(half *h, float4 f, float scale) } #else /* same as above with SSE */ - const ssef mm_scale = ssef(scale); - const ssei mm_38800000 = ssei(0x38800000); - const ssei mm_7FFF = ssei(0x7FFF); - const ssei mm_7FFFFFFF = ssei(0x7FFFFFFF); - const ssei mm_C8000000 = ssei(0xC8000000); - - ssef mm_fscale = load4f(f) * mm_scale; - ssei x = cast(min(max(mm_fscale, ssef(0.0f)), ssef(65500.0f))); - ssei absolute = x & mm_7FFFFFFF; - ssei Z = absolute + mm_C8000000; - ssei result = andnot(absolute < mm_38800000, Z); - ssei rh = (result >> 13) & mm_7FFF; - - _mm_storel_pi((__m64*)h, _mm_castsi128_ps(_mm_packs_epi32(rh, rh))); + ssef fscale = load4f(f) * scale; + ssef x = min(max(fscale, 0.0f), 65504.0f); + +#ifdef __KERNEL_AVX2__ + ssei rpack = _mm_cvtps_ph(x, 0); +#else + ssei absolute = cast(x) & 0x7FFFFFFF; + ssei Z = absolute + 0xC8000000; + ssei result = andnot(absolute < 0x38800000, Z); + ssei rshift = (result >> 13) & 0x7FFF; + ssei rpack = _mm_packs_epi32(rshift, rshift); +#endif + + _mm_storel_pi((__m64*)h, _mm_castsi128_ps(rpack)); #endif } |