From d8066fb0f145395594d0a952a4c0f70206dc0214 Mon Sep 17 00:00:00 2001
From: Lukas Stockner <lukas.stockner@freenet.de>
Date: Sun, 5 Nov 2017 21:43:23 +0100
Subject: Cycles: Refactor closure roughness detection to fix a potential bug
 with Denoising of specular shaders

---
 intern/cycles/util/util_math.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'intern/cycles/util')

diff --git a/intern/cycles/util/util_math.h b/intern/cycles/util/util_math.h
index fb04d49bcd9..39ce6a93982 100644
--- a/intern/cycles/util/util_math.h
+++ b/intern/cycles/util/util_math.h
@@ -518,6 +518,11 @@ ccl_device float safe_modulo(float a, float b)
 	return (b != 0.0f)? fmodf(a, b): 0.0f;
 }
 
+ccl_device_inline float sqr(float a)
+{
+	return a * a;
+}
+
 ccl_device_inline float beta(float x, float y)
 {
 #ifndef __KERNEL_OPENCL__
-- 
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