feat: global prefer sampling size

close #269

Author: mob-sakai

Packages/src/Editor/UIEffectProjectSettingsEditor.cs

@@ -10,6 +10,7 @@ public class UIEffectProjectSettingsEditor : Editor
     {
         private ReorderableList _reorderableList;
         private SerializedProperty _transformSensitivity;
+        private SerializedProperty _preferSamplingSize;
         private bool _isInitialized;
         private ShaderVariantRegistryEditor _shaderVariantRegistryEditor;
 
@@ -18,6 +19,7 @@ private void InitializeIfNeeded()
             if (_isInitialized) return;
 
             _transformSensitivity = serializedObject.FindProperty("m_TransformSensitivity");
+            _preferSamplingSize = serializedObject.FindProperty("m_PreferSamplingSize");
             var runtimePresets = serializedObject.FindProperty("m_RuntimePresets");
             _reorderableList = new ReorderableList(serializedObject, runtimePresets, true, true, true, true);
             _reorderableList.drawHeaderCallback = rect => EditorGUI.LabelField(rect, "Runtime Presets");
@@ -64,6 +66,7 @@ public override void OnInspectorGUI()
 
             // Settings
             EditorGUILayout.PropertyField(_transformSensitivity);
+            EditorGUILayout.PropertyField(_preferSamplingSize);
             _reorderableList.DoLayoutList();
 
             // Shader registry

Packages/src/Runtime/Enums.cs

@@ -76,6 +76,14 @@ public enum ShadowMode
         Mirror
     }
 
+    public enum PreferSamplingSize
+    {
+        None = 0,
+        x512 = 512,
+        x1024 = 1024,
+        x2048 = 2048
+    }
+
     internal static class BlendTypeConverter
     {
         public static (BlendMode, BlendMode) Convert(this (BlendType type, BlendMode src, BlendMode dst) self)

Packages/src/Runtime/UIEffectProjectSettings.cs

@@ -10,6 +10,8 @@ namespace Coffee.UIEffects
 {
     public class UIEffectProjectSettings : PreloadedProjectSettings<UIEffectProjectSettings>
     {
+        private static readonly int s_PreferSamplingSize = Shader.PropertyToID("_UIEffect_PreferSamplingSize");
+
         [Tooltip(
             "The sensitivity of the transformation when `Use Target Transform` is enabled in the `UIEffectReplica` component.")]
         [Header("Setting")]
@@ -19,6 +21,9 @@ public class UIEffectProjectSettings : PreloadedProjectSettings<UIEffectProjectS
         [SerializeField]
         internal List<UIEffect> m_RuntimePresets = new List<UIEffect>();
 
+        [SerializeField]
+        private PreferSamplingSize m_PreferSamplingSize = PreferSamplingSize.None;
+
         [HideInInspector]
         [SerializeField]
         internal ShaderVariantCollection m_ShaderVariantCollection;
@@ -27,6 +32,17 @@ public class UIEffectProjectSettings : PreloadedProjectSettings<UIEffectProjectS
         [SerializeField]
         private ShaderVariantRegistry m_ShaderVariantRegistry = new ShaderVariantRegistry();
 
+        public static PreferSamplingSize preferSamplingSize
+        {
+            get => instance.m_PreferSamplingSize;
+            set
+            {
+                if (instance.m_PreferSamplingSize == value) return;
+                instance.m_PreferSamplingSize = value;
+                instance.SetPreferSamplingSize();
+            }
+        }
+
         public static ShaderVariantRegistry shaderRegistry => instance.m_ShaderVariantRegistry;
 
         public static ShaderVariantCollection shaderVariantCollection => shaderRegistry.shaderVariantCollection;
@@ -62,6 +78,20 @@ public static UIEffect LoadRuntimePreset(string presetName)
             return null;
         }
 
+        protected override void OnEnable()
+        {
+            base.OnEnable();
+            SetPreferSamplingSize();
+        }
+
+        private void SetPreferSamplingSize()
+        {
+            if (instance == this)
+            {
+                Shader.SetGlobalInt(s_PreferSamplingSize, (int)instance.m_PreferSamplingSize);
+            }
+        }
+
 #if UNITY_EDITOR
         private const string k_PresetDir = "UIEffectPresets";
         private const string k_PresetSaveDir = "Assets/ProjectSettings/" + k_PresetDir;
@@ -82,6 +112,11 @@ private void Reset()
             m_ShaderVariantRegistry.InitializeIfNeeded(this, "(UIEffect)");
         }
 
+        private void OnValidate()
+        {
+            SetPreferSamplingSize();
+        }
+
         internal static UIEffect[] LoadEditorPresets()
         {
             var dirs = AssetDatabase.FindAssets(k_PresetDir + " t:folder")

Packages/src/Shaders/UIEffect.cginc

@@ -1,6 +1,7 @@
 #ifndef UI_EFFECT_INCLUDED
 #define UI_EFFECT_INCLUDED
 
+uniform int _UIEffect_PreferSamplingSize;
 uniform float4 _MainTex_TexelSize;
 uniform float _ToneIntensity;
 uniform half4 _ColorValue;
@@ -44,7 +45,13 @@ uniform float _TargetSoftness;
 
 float2 texel_size()
 {
-    return _MainTex_TexelSize.xy * _SamplingScale;
+    float2 scale = _MainTex_TexelSize.xy * _SamplingScale;
+    if (0 < _UIEffect_PreferSamplingSize)
+    {
+        scale *= max(_MainTex_TexelSize.z, _MainTex_TexelSize.w) / _UIEffect_PreferSamplingSize;
+    }
+
+    return scale;
 }
 
 float3 rgb_to_hsv(float3 c)