Initial upload

Editor/PropertyDrawer/PopupDrawer.cs

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+using System;
+using UnityEditor;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace Misaki.ShaderGUI
+{
+    public class PopupUIDrawer : MaterialPropertyDrawer
+    {
+        private static readonly GUIContent[] _options = { new("Disabled"), new("Enabled") };
+
+        protected virtual void SetKeyword(MaterialProperty prop, bool on)
+        {
+        }
+
+        static bool IsPropertyTypeSuitable(MaterialProperty prop)
+        {
+#if UNITY_6000_1_OR_NEWER
+            return prop.propertyType == ShaderPropertyType.Float || prop.propertyType == ShaderPropertyType.Range || prop.propertyType == ShaderPropertyType.Int;
+#else
+            return prop.type == MaterialProperty.PropType.Float || prop.type == MaterialProperty.PropType.Range || prop.type == MaterialProperty.PropType.Float;
+#endif
+        }
+
+        public override void OnGUI(Rect position, MaterialProperty prop, GUIContent label, MaterialEditor editor)
+        {
+            if (!IsPropertyTypeSuitable(prop))
+            {
+                var c = EditorGUIUtility.TrTempContent("Toggle used on a non-float property: " + prop.name);
+                EditorGUI.LabelField(position, c, EditorStyles.helpBox);
+                return;
+            }
+
+            MaterialEditor.BeginProperty(position, prop);
+
+#if UNITY_6000_1_OR_NEWER
+            if (prop.propertyType != ShaderPropertyType.Int)
+#else
+            if (prop.type != MaterialProperty.PropType.Int)
+#endif
+            {
+                EditorGUI.BeginChangeCheck();
+
+                var value = (int)Math.Abs(prop.floatValue);
+                EditorGUI.showMixedValue = prop.hasMixedValue;
+                value = EditorGUI.Popup(position, label, value, _options);
+                EditorGUI.showMixedValue = false;
+                if (EditorGUI.EndChangeCheck())
+                {
+                    prop.floatValue = value;
+                    SetKeyword(prop, value != 0);
+                }
+            }
+            else
+            {
+                EditorGUI.BeginChangeCheck();
+
+                var value = Math.Abs(prop.intValue);
+                EditorGUI.showMixedValue = prop.hasMixedValue;
+                value = EditorGUI.Popup(position, label, value, _options);
+                EditorGUI.showMixedValue = false;
+                if (EditorGUI.EndChangeCheck())
+                {
+                    prop.intValue = value;
+                    SetKeyword(prop, value != 0);
+                }
+            }
+
+            MaterialEditor.EndProperty();
+        }
+    }
+
+    public class PopupDrawer : PopupUIDrawer
+    {
+        private const string Keyword_Suffix = "_ON";
+
+        protected override void SetKeyword(MaterialProperty prop, bool on)
+        {
+            var keywordName = prop.name.ToUpper() + Keyword_Suffix;
+            foreach (var target in prop.targets)
+            {
+                if (target is not Material material)
+                {
+                    continue;
+                }
+
+                material.SetKeyword(new LocalKeyword(material.shader, keywordName), on);
+            }
+        }
+    }
+}

Editor/PropertyDrawer/PopupDrawer.cs.meta

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+fileFormatVersion: 2
+guid: bdbc6f7a1b3b5d4489e5ed18fd3c1202