Commit: 9339dc6dd1080730d1cf0e9a3f14d6139b2fda06 Author: Ray molenkamp Date: Fri Feb 14 13:54:09 2020 +0100 Branches: master https://developer.blender.org/rB9339dc6dd1080730d1cf0e9a3f14d6139b2fda06
Fix T70685: Cycles crash using WITH_CYCLES_NATIVE_ONLY on Windows MSVC does not have -march=native, so the kernel gets built without AVX2 and BVH8 support. The code assumed it to be available and crashed Differential Revision: https://developer.blender.org/D6082 =================================================================== M intern/cycles/device/device_cpu.cpp =================================================================== diff --git a/intern/cycles/device/device_cpu.cpp b/intern/cycles/device/device_cpu.cpp index 42ebf3a8399..795781ee072 100644 --- a/intern/cycles/device/device_cpu.cpp +++ b/intern/cycles/device/device_cpu.cpp @@ -338,7 +338,10 @@ class CPUDevice : public Device { if (DebugFlags().cpu.has_sse2() && system_cpu_support_sse2()) { bvh_layout_mask |= BVH_LAYOUT_BVH4; } -#if defined(__x86_64__) || defined(_M_X64) + /* MSVC does not support the -march=native switch and you always end up */ + /* with an sse2 kernel when you use WITH_KERNEL_NATIVE. We *cannot* feed */ + /* that kernel BVH8 even if the CPU flags would allow for it. */ +#if (defined(__x86_64__) || defined(_M_X64)) && !(defined(_MSC_VER) && defined(WITH_KERNEL_NATIVE)) if (DebugFlags().cpu.has_avx2() && system_cpu_support_avx2()) { bvh_layout_mask |= BVH_LAYOUT_BVH8; } _______________________________________________ Bf-blender-cvs mailing list Bf-blender-cvs@blender.org https://lists.blender.org/mailman/listinfo/bf-blender-cvs