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Fix/workaround T50533: Transparency shader doesn't cast shadows with curve segments 

There seems to be a compiler bug of MSVC2013. The issue does not happen on Linux and
does not happen on Windows when building with MSVC2015.

Since it's reallly a pain to debug release builds with MSVC2013 the AVX2 optimization
is disabled for curve sergemnts for this compiler.
This commit is contained in:
Sergey Sharybin 2017-03-22 11:37:23 +01:00
parent 8563d3b254
commit 2b44db4cfc
1 changed files with 2 additions and 2 deletions
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4
intern/cycles/kernel/geom/geom_curve.h
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@ -264,7 +264,7 @@ ccl_device_forceinline bool bvh_cardinal_curve_intersect(KernelGlobals *kg, Inte
int ka = max(k0 - 1, v00.x);
int kb = min(k1 + 1, v00.x + v00.y - 1);
#ifdef __KERNEL_AVX2__
#if defined(__KERNEL_AVX2__) && (!defined(_MSC_VER) || _MSC_VER > 1800)
avxf P_curve_0_1, P_curve_2_3;
if(is_curve_primitive) {
P_curve_0_1 = _mm256_loadu2_m128(&kg->__curve_keys.data[k0].x, &kg->__curve_keys.data[ka].x);
@ -299,7 +299,7 @@ ccl_device_forceinline bool bvh_cardinal_curve_intersect(KernelGlobals *kg, Inte
ssef htfm1 = shuffle<1, 0, 1, 3>(load1f_first(extract<0>(d_ss)), vdir0);
ssef htfm2 = shuffle<1, 3, 2, 3>(mul_shuf, vdir0);
#ifdef __KERNEL_AVX2__
#if defined(__KERNEL_AVX2__) && (!defined(_MSC_VER) || _MSC_VER > 1800)
const avxf vPP = _mm256_broadcast_ps(&P.m128);
const avxf htfm00 = avxf(htfm0.m128, htfm0.m128);
const avxf htfm11 = avxf(htfm1.m128, htfm1.m128);