diff --git a/wgsl.xml b/wgsl.xml
index 6fad7ef..e5a12e2 100644
--- a/wgsl.xml
+++ b/wgsl.xml
@@ -98,11 +98,27 @@
 			<item>num_workgroups</item>
 		</list>
 
+		<list name="interpolation_type">
+			<item>perspective</item>
+			<item>linear</item>
+			<item>flat</item>
+		</list>
+
+		<list name="interpolation_sampling">
+			<item>center</item>
+			<item>centroid</item>
+			<item>sample</item>
+			<item>first</item>
+			<item>either</item>
+		</list>
+
 		<contexts>
 			<context attribute="Normal Text" lineEndContext="#pop" name="Normal">
 				<keyword attribute="Keyword" context="#stay" String="keyword" />
+				<keyword attribute="Control Flow" context="#stay" String="control" />
 				<keyword attribute="BuiltIn" context="#stay" String="type" />
-				<DetectChar attribute="Attribute" context="Attribute" char="@" />
+				<keyword attribute="Known Attribute" context="AttributeArgsMaybe" String="attribute" />
+				<DetectChar attribute="Unknown Attribute" context="Attribute" char="@" />
 				<RegExpr attribute="Hexadecimal Float" context="#stay" String="\b0[xX][0-9a-fA-F]*\.[0-9a-fA-F]+([pP][+-]?[0-9]+[fh]?)?" />
 				<RegExpr attribute="Hexadecimal Float" context="#stay" String="\b0[xX][0-9a-fA-F]+\.[0-9a-fA-F]*([pP][+-]?[0-9]+[fh]?)?" />
 				<RegExpr attribute="Hexadecimal Float" context="#stay" String="\b0[xX][0-9a-fA-F]+[pP][+-]?[0-9]+[fh]?" />
@@ -126,16 +142,19 @@
 				<Detect2Chars attribute="Comment" context="#pop" char="*" char1="/" endRegion="CommentFolding" />
 				<IncludeRules context="##Alerts" />
 			</context>
-			<context attribute="Attribute" lineEndContext="#stay" name="Attribute">
-				<DetectIdentifier attribute="Attribute" context="#pop!AttributeArgsMaybe" />
+			<context attribute="Attribute Content" lineEndContext="#stay" name="Attribute">
+				<DetectIdentifier attribute="Unknown Attribute" context="#pop!AttributeArgsMaybe" />
 			</context>
-			<context attribute="Attribute" lineEndContext="#stay" name="AttributeArgsMaybe">
-				<DetectChar attribute="Attribute" context="#pop!AttributeArgs" char="(" />
+			<context attribute="Attribute Content" lineEndContext="#stay" name="AttributeArgsMaybe">
+				<DetectChar attribute="Attribute Content" context="#pop!AttributeArgs" char="(" />
 				<RegExpr attribute="Normal Text" context="#pop" lookAhead="true" String="[^\s(]" />
 			</context>
-			<context attribute="Attribute" lineEndContext="#stay" name="AttributeArgs">
-				<DetectChar attribute="Attribute" context="AttributeArgs" char="(" />
-				<DetectChar attribute="Attribute" context="#pop" char=")" />
+			<context attribute="Attribute Content" lineEndContext="#stay" name="AttributeArgs">
+				<DetectChar attribute="Attribute Content" context="AttributeArgs" char="(" />
+				<DetectChar attribute="Attribute Content" context="#pop" char=")" />
+				<keyword attribute="Keyword Attribute Value" context="#stay" String="builtin_value_name" />
+				<keyword attribute="Keyword Attribute Value" context="#stay" String="interpolation_type" />
+				<keyword attribute="Keyword Attribute Value" context="#stay" String="interpolation_sampling" />
 			</context>
 		</contexts>
 
@@ -144,7 +163,10 @@
 			<itemData name="Keyword" defStyleNum="dsKeyword" />
 			<itemData name="Control Flow" defStyleNum="dsControlFlow" />
 			<itemData name="BuiltIn" defStyleNum="dsDataType" />
-			<itemData name="Attribute" defStyleNum="dsAttribute" />
+			<itemData name="Unknown Attribute" defStyleNum="dsAttribute" italic="true" />
+			<itemData name="Known Attribute" defStyleNum="dsAttribute" />
+			<itemData name="Attribute Content" defStyleNum="dsAttribute" />
+			<itemData name="Keyword Attribute Value" defStyleNum="dsAttribute" />
 			<itemData name="Comment" defStyleNum="dsComment" />
 			<itemData name="Decimal Integer" defStyleNum="dsDecVal" />
 			<itemData name="Hexadecimal Integer" defStyleNum="dsBaseN" />