From d547f9d3d291b495a022e1e3bfbb5f4af25c02b1 Mon Sep 17 00:00:00 2001
From: Stefan Werner <stefan.werner@tangent-animation.com>
Date: Tue, 27 Aug 2019 14:03:49 +0200
Subject: Fix T68944: Added check for SSE4.1 to denoising node.

Since OpenImageDenoise requires a CPU with SSE 4.1 or newer,
let the node act as passthrough on unsupported CPUs and display
a message in the node itself.
---
 source/blender/blenlib/intern/system.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'source/blender/blenlib/intern/system.c')

diff --git a/source/blender/blenlib/intern/system.c b/source/blender/blenlib/intern/system.c
index 88f2e2625e8..941c2b608e6 100644
--- a/source/blender/blenlib/intern/system.c
+++ b/source/blender/blenlib/intern/system.c
@@ -179,6 +179,19 @@ char *BLI_cpu_brand_string(void)
   return NULL;
 }
 
+int BLI_cpu_support_sse41(void)
+{
+  int result[4], num;
+  __cpuid(result, 0);
+  num = result[0];
+
+  if (num >= 1) {
+    __cpuid(result, 0x00000001);
+    return (result[2] & ((int)1 << 19)) != 0;
+  }
+  return 0;
+}
+
 void BLI_hostname_get(char *buffer, size_t bufsize)
 {
 #ifndef WIN32
-- 
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