From 1e5694e0828f97ce07a60d96e13ca838a664a883 Mon Sep 17 00:00:00 2001
From: Ilya Lavrenov <ilya.lavrenov@itseez.com>
Date: Mon, 12 May 2014 12:45:52 +0400
Subject: [PATCH] heuristic for Intel

---
 modules/core/src/ocl.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/modules/core/src/ocl.cpp b/modules/core/src/ocl.cpp
index e3cfd8e7c..ec0efe554 100644
--- a/modules/core/src/ocl.cpp
+++ b/modules/core/src/ocl.cpp
@@ -4414,6 +4414,12 @@ int predictOptimalVectorWidth(InputArray src1, InputArray src2, InputArray src3,
         d.preferredVectorWidthShort(), d.preferredVectorWidthShort(),
         d.preferredVectorWidthInt(), d.preferredVectorWidthFloat(),
         d.preferredVectorWidthDouble(), -1 }, width = vectorWidths[depth];
+    if (d.isIntel())
+    {
+        // it's heuristic
+        int vectorWidthsIntel[] = { 16, 16, 8, 8, 1, 1, 1, -1 };
+        width = vectorWidthsIntel[depth];
+    }
 
     if (ssize.width * cn < width || width <= 0)
         return 1;