Minor updates

Gems/Atom/RHI/Code/Include/Atom/RHI.Reflect/BufferDescriptor.h

@@ -33,7 +33,7 @@ namespace AZ
             /// Supports input assembly access through a IndexBufferView or StreamBufferView. This flag is for buffers that are not updated often
             InputAssembly   = AZ_BIT(0),
             
-            /// Supports input assembly access through a IndexBufferView or StreamBufferView. This flag is for buffers that are updated perf frame
+            /// Supports input assembly access through a IndexBufferView or StreamBufferView. This flag is for buffers that are updated frequently
             DynamicInputAssembly = AZ_BIT(1),
             
             /// Supports constant access through a ShaderResourceGroup.

Gems/Atom/RHI/Metal/Code/Source/RHI.Builders/ShaderPlatformInterface.cpp

@@ -835,6 +835,8 @@ namespace AZ
             size_t prevEndOfLine = argBufferStr.rfind("\n", resourceStartPos);
             size_t nextEndOfLine = argBufferStr.find("\n", resourceStartPos);
             size_t startOfEntryPos = argBufferStr.find(resourceStr, prevEndOfLine);
+            
+            //Check to see if a valid entry is found. 
             if(startOfEntryPos == AZStd::string::npos || startOfEntryPos > nextEndOfLine)
             {
                 AZ_Error(MetalShaderPlatformName, startOfEntryPos != AZStd::string::npos, "Entry-> %s not found within Descriptor set %s", resourceStr, argBufferStr.c_str());

Gems/Atom/RHI/Metal/Code/Source/RHI/Conversions.cpp

@@ -211,6 +211,7 @@ namespace AZ
                 return GetCPUGPUMemoryMode();
             }
             
+            //This flag is used for IA buffers that is updated frequently and hence shared mmory is the best fit
             if (RHI::CheckBitsAll(descriptor.m_bindFlags, RHI::BufferBindFlags::DynamicInputAssembly))
             {
                 return MTLStorageModeShared;