Cycles / SunSky:

* Use already calculated theta^2 for theta^3 calculation. 

2 files changed, 2 insertions, 2 deletions

diff --git a/intern/cycles/kernel/shaders/node_sky_texture.osl b/intern/cycles/kernel/shaders/node_sky_texture.osl
index 13f958d65bd..e9f7dfb3a2a 100644
--- a/intern/cycles/kernel/shaders/node_sky_texture.osl
+++ b/intern/cycles/kernel/shaders/node_sky_texture.osl
@@ -107,7 +107,7 @@ void precompute_sunsky(vector dir, float turbidity, output KernelSunSky sunsky)
 	sunsky.dir = dir;
 
 	float theta2 = theta * theta;
-	float theta3 = theta * theta * theta;
+	float theta3 = theta2 * theta;
 	float T = turbidity;
 	float T2 = T * T;
 
diff --git a/intern/cycles/render/nodes.cpp b/intern/cycles/render/nodes.cpp
index 398b9f0a758..a4ffc2518fb 100644
--- a/intern/cycles/render/nodes.cpp
+++ b/intern/cycles/render/nodes.cpp
@@ -393,7 +393,7 @@ static void sky_texture_precompute(KernelSunSky *ksunsky, float3 dir, float turb
 	ksunsky->phi = phi;
 
 	float theta2 = theta*theta;
-	float theta3 = theta*theta*theta;
+	float theta3 = theta2*theta;
 	float T = turbidity;
 	float T2 = T * T;