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Diffstat (limited to 'intern/cycles/kernel/svm/svm_sky.h')
-rw-r--r--intern/cycles/kernel/svm/svm_sky.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/intern/cycles/kernel/svm/svm_sky.h b/intern/cycles/kernel/svm/svm_sky.h
index e877bd9a5c8..214c0cd1a9a 100644
--- a/intern/cycles/kernel/svm/svm_sky.h
+++ b/intern/cycles/kernel/svm/svm_sky.h
@@ -145,7 +145,7 @@ ccl_device float3 sky_radiance_nishita(KernelGlobals *kg,
if (dir.z >= 0.0f) {
/* definitions */
float3 sun_dir = geographical_to_direction(sun_elevation, sun_rotation + M_PI_2_F);
- float sun_dir_angle = acos(dot(dir, sun_dir));
+ float sun_dir_angle = precise_angle(dir, sun_dir);
float half_angular = angular_diameter / 2.0f;
float dir_elevation = M_PI_2_F - direction.x;