From de4605d6b72cd3729ae5dfab9880f70c89657c7b Mon Sep 17 00:00:00 2001
From: Doug McDiarmid <dmcdiar@amazon.com>
Date: Mon, 14 Jun 2021 18:31:43 -0700
Subject: [PATCH] Added comment.

---
 .../ReflectionScreenSpaceCompositePass.cpp                     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Gems/Atom/Feature/Common/Code/Source/ReflectionScreenSpace/ReflectionScreenSpaceCompositePass.cpp b/Gems/Atom/Feature/Common/Code/Source/ReflectionScreenSpace/ReflectionScreenSpaceCompositePass.cpp
index fe2030ca7e..ab09d7175a 100644
--- a/Gems/Atom/Feature/Common/Code/Source/ReflectionScreenSpace/ReflectionScreenSpaceCompositePass.cpp
+++ b/Gems/Atom/Feature/Common/Code/Source/ReflectionScreenSpace/ReflectionScreenSpaceCompositePass.cpp
@@ -42,6 +42,9 @@ namespace AZ
             if (!passes.empty())
             {
                 Render::ReflectionScreenSpaceBlurPass* blurPass = azrtti_cast<ReflectionScreenSpaceBlurPass*>(passes.front());
+
+                // compute the max mip level based on the available mips in the previous frame image, and capping it
+                // to stay within a range that has reasonable data
                 const uint32_t MaxNumRoughnessMips = 8;
                 uint32_t maxMipLevel = AZStd::min(MaxNumRoughnessMips, blurPass->GetNumBlurMips()) - 1;