[Bf-blender-cvs] [2c46b4b24c8] cycles-x: Cleanup: add comment

[Brecht Van Lommel]

Commit: 2c46b4b24c8f005f10de288a4c65dbfa8fe54901
Author: Brecht Van Lommel
Date:   Fri Jul 9 15:37:26 2021 +0200
Branches: cycles-x
https://developer.blender.org/rB2c46b4b24c8f005f10de288a4c65dbfa8fe54901

Cleanup: add comment

===================================================================

M	intern/cycles/kernel/integrator/integrator_intersect_closest.h

===================================================================

diff --git a/intern/cycles/kernel/integrator/integrator_intersect_closest.h b/intern/cycles/kernel/integrator/integrator_intersect_closest.h
index ba397c24cb7..d49068d9823 100644
--- a/intern/cycles/kernel/integrator/integrator_intersect_closest.h
+++ b/intern/cycles/kernel/integrator/integrator_intersect_closest.h
@@ -81,6 +81,8 @@ ccl_device_forceinline bool integrator_intersect_terminate(INTEGRATOR_STATE_ARGS
   return false;
 }
 
+/* Note that current_kernel is a template value since making this a variable
+ * leads to poor performance with CUDA atomics. */
 template<uint32_t current_kernel>
 ccl_device_forceinline void integrator_intersect_shader_next_kernel(
     INTEGRATOR_STATE_ARGS,