feat: add fields located outside the Properties block in the shader as Animatable Properties

close #399
2026-06-26 00:13:54 +00:00 · 2026-06-25 16:20:37 +09:00
parent 8e0ff10c73
commit ea2fcfd809
11 changed files with 454 additions and 28 deletions
--- a/Packages/src/Editor/AnimatablePropertyEditor.cs
+++ b/Packages/src/Editor/AnimatablePropertyEditor.cs
@@ -3,15 +3,19 @@ using System.Linq;
 using System.Text;
 using UnityEditor;
 using UnityEngine;
+using ShaderPropertyType = Coffee.UIExtensions.AnimatableProperty.ShaderPropertyType;

 namespace Coffee.UIExtensions
 {
    internal static class AnimatablePropertyEditor
    {
        private static readonly GUIContent s_ContentNothing = new GUIContent("Nothing");
+        private static readonly GUIContent s_ContentCustom = new GUIContent("Add Custom...");
        private static readonly List<string> s_ActiveNames = new List<string>();
        private static readonly StringBuilder s_Sb = new StringBuilder();
        private static readonly HashSet<string> s_Names = new HashSet<string>();
+        private static ShaderProperty s_CustomProperty = new ShaderProperty("", ShaderPropertyType.None);
+        private static bool s_ShowCustomProperty = false;

        private static string CollectActiveNames(SerializedProperty sp, List<string> result)
        {
@@ -51,8 +55,19 @@ namespace Coffee.UIExtensions
                ? "-"
                : CollectActiveNames(sp, s_ActiveNames);

-            if (!GUI.Button(rect, text, EditorStyles.popup)) return;
+            if (GUI.Button(rect, text, EditorStyles.popup))
+            {
+                ShowMenu(sp, mats);
+            }

+            if (s_ShowCustomProperty)
+            {
+                DrawCustomProperty(sp, ref s_CustomProperty);
+            }
+        }
+
+        private static void ShowMenu(SerializedProperty sp, List<Material> mats)
+        {
            var gm = new GenericMenu();
            gm.AddItem(s_ContentNothing, s_ActiveNames.Count == 0, x =>
            {
@@ -61,13 +76,20 @@ namespace Coffee.UIExtensions
                current.serializedObject.ApplyModifiedProperties();
            }, sp);

+            gm.AddItem(s_ContentCustom, s_ShowCustomProperty, () =>
+            {
+                s_ShowCustomProperty = !s_ShowCustomProperty;
+                s_CustomProperty.Reset();
+            });
+            gm.AddSeparator("");
+
            if (!sp.hasMultipleDifferentValues)
            {
                for (var i = 0; i < sp.arraySize; i++)
                {
                    var p = sp.GetArrayElementAtIndex(i);
                    var name = p.FindPropertyRelative("m_Name").stringValue;
-                    var type = (AnimatableProperty.ShaderPropertyType)p.FindPropertyRelative("m_Type").intValue;
+                    var type = (ShaderPropertyType)p.FindPropertyRelative("m_Type").intValue;
                    AddMenu(gm, sp, new ShaderProperty(name, type), false);
                }
            }
@@ -86,16 +108,16 @@ namespace Coffee.UIExtensions
                {
 #if UNITY_6000_5_OR_NEWER
                    var name = mat.shader.GetPropertyName(i);
-                    var type = (AnimatableProperty.ShaderPropertyType)mat.shader.GetPropertyType(i);
+                    var type = (ShaderPropertyType)mat.shader.GetPropertyType(i);
 #else
                    var name = ShaderUtil.GetPropertyName(mat.shader, i);
-                    var type = (AnimatableProperty.ShaderPropertyType)ShaderUtil.GetPropertyType(mat.shader, i);
+                    var type = (ShaderPropertyType)ShaderUtil.GetPropertyType(mat.shader, i);
 #endif
                    if (!s_Names.Add(name)) continue;

                    AddMenu(gm, sp, new ShaderProperty(name, type), true);

-                    if (type != AnimatableProperty.ShaderPropertyType.Texture) continue;
+                    if (type != ShaderPropertyType.Texture) continue;

                    AddMenu(gm, sp, new ShaderProperty($"{name}_ST"), true);
                    AddMenu(gm, sp, new ShaderProperty($"{name}_HDR"), true);
@@ -111,7 +133,35 @@ namespace Coffee.UIExtensions
            if (add && s_ActiveNames.Contains(prop.name)) return;

            var label = new GUIContent($"{prop.name} ({prop.type})");
-            menu.AddItem(label, s_ActiveNames.Contains(prop.name), () =>
+            menu.AddItem(label, s_ActiveNames.Contains(prop.name), () => AddProp(sp, prop));
+        }
+
+        private static void DrawCustomProperty(SerializedProperty sp, ref ShaderProperty prop)
+        {
+            var r = EditorGUILayout.GetControlRect(false, EditorGUIUtility.singleLineHeight + 8);
+            r.xMin += 60;
+            GUI.Label(r, (Texture)null, EditorStyles.helpBox);
+
+            r = new Rect(r.x + 4, r.y + 4, r.width - 8 - 100 - 16, r.height - 8);
+            prop.name = EditorGUI.TextField(r, prop.name);
+            r.x += r.width + 2;
+            r.width = 100 - 2;
+            prop.type = (ShaderPropertyType)EditorGUI.EnumPopup(r, prop.type);
+            r.x += r.width;
+            r.width = 16;
+
+            EditorGUI.BeginDisabledGroup(!prop.IsValid(s_ActiveNames));
+            if (GUI.Button(r, EditorGUIUtility.IconContent("Toolbar Plus"), EditorStyles.label))
+            {
+                GUI.FocusControl("");
+                AddProp(sp, prop);
+                prop.Reset();
+            }
+
+            EditorGUI.EndDisabledGroup();
+        }
+
+        private static void AddProp(SerializedProperty sp, ShaderProperty prop)
        {
            var index = s_ActiveNames.IndexOf(prop.name);
            if (0 <= index)
@@ -127,25 +177,38 @@ namespace Coffee.UIExtensions
            }

            sp.serializedObject.ApplyModifiedProperties();
-            });
        }

        private struct ShaderProperty
        {
-            public readonly string name;
-            public readonly AnimatableProperty.ShaderPropertyType type;
+            public string name;
+            public ShaderPropertyType type;

            public ShaderProperty(string name)
            {
                this.name = name;
-                type = AnimatableProperty.ShaderPropertyType.Vector;
+                type = ShaderPropertyType.Vector;
            }

-            public ShaderProperty(string name, AnimatableProperty.ShaderPropertyType type)
+            public ShaderProperty(string name, ShaderPropertyType type)
            {
                this.name = name;
                this.type = type;
            }
+
+            public void Reset()
+            {
+                name = "";
+                type = ShaderPropertyType.None;
+            }
+
+            public bool IsValid(List<string> activeNames)
+            {
+                if (string.IsNullOrEmpty(name)) return false;
+                if (type == ShaderPropertyType.None) return false;
+                if (activeNames.Contains(name)) return false;
+                return true;
+            }
        }
    }
 }
--- a/Packages/src/README.md
+++ b/Packages/src/README.md
@@ -164,6 +164,12 @@ _This package requires **Unity 2018.3 or later**._
 - **Scale**: Scale the rendering particles. When the `3D` toggle is enabled, 3D scale (x, y, z) is supported.
 - **Animatable Properties**: If you want to update material properties (e.g., `_MainTex_ST`, `_Color`) in AnimationClip,
  use this to mark as animatable.
+
+> [!TIPS]
+> (Unity 2021.1 or later) **Custom Animatable Properties**  
+> From the `Add Custom...` menu in `Animatable Properties`, you can add fields located outside the `Properties` block in the shader as `Animatable Properties`.  
+> This allows `Matrix`, `Matrix Array`, `Float Array`, and `Vector Array` values modified by the `ParticleSystemRenderer.SetPropertyBlock` method to be automatically reflected in UIParticle.
+
 - **Mesh Sharing**: Particle simulation results are shared within the same group. A large number of the same effects can
  be displayed with a small load. When the `Random` toggle is enabled, it will be grouped randomly.
  - **None:** Disable mesh sharing.
--- a/Packages/src/Runtime/AnimatableProperty.cs
+++ b/Packages/src/Runtime/AnimatableProperty.cs
@@ -8,11 +8,18 @@ namespace Coffee.UIExtensions
    {
        public enum ShaderPropertyType
        {
+            None = -1,
            Color,
            Vector,
            Float,
            Range,
-            Texture
+            Texture,
+            Int,
+
+            Matrix = 100,
+            MatrixArray = 101,
+            FloatArray = 102,
+            VectorArray = 103,
        }

        [SerializeField] private string m_Name = "";
@@ -32,7 +39,11 @@ namespace Coffee.UIExtensions

        public void UpdateMaterialProperties(Material material, MaterialPropertyBlock mpb)
        {
+#if UNITY_2021_1_OR_NEWER
+            if (!mpb.HasProperty(id)) return;
+#else
            if (!material.HasProperty(id)) return;
+#endif

            switch (type)
            {
@@ -49,6 +60,21 @@ namespace Coffee.UIExtensions
                case ShaderPropertyType.Texture:
                    material.SetTexture(id, mpb.GetTexture(id));
                    break;
+                case ShaderPropertyType.Int:
+                    material.SetInt(id, mpb.GetInt(id));
+                    break;
+                case ShaderPropertyType.Matrix:
+                    material.SetMatrix(id, mpb.GetMatrix(id));
+                    break;
+                case ShaderPropertyType.MatrixArray:
+                    material.SetMatrixArray(id, mpb.GetMatrixArray(id));
+                    break;
+                case ShaderPropertyType.FloatArray:
+                    material.SetFloatArray(id, mpb.GetFloatArray(id));
+                    break;
+                case ShaderPropertyType.VectorArray:
+                    material.SetVectorArray(id, mpb.GetVectorArray(id));
+                    break;
            }
        }
    }
--- a/Packages/src/Samples~/Demo/Animations/ColorArrayInjection.cs
+++ b/Packages/src/Samples~/Demo/Animations/ColorArrayInjection.cs
@@ -0,0 +1,32 @@
+using System.Linq;
+using UnityEngine;
+
+[RequireComponent(typeof(ParticleSystemRenderer))]
+public class ColorArrayInjection : MonoBehaviour
+{
+    [SerializeField] private string m_PropertyName = "_Color2";
+
+    [SerializeField] private Color[] m_Colors = new Color[4]
+    {
+        Color.red,
+        Color.green,
+        Color.blue,
+        Color.yellow
+    };
+
+    private void OnEnable()
+    {
+        if (TryGetComponent<ParticleSystemRenderer>(out var psr))
+        {
+            var mpb = new MaterialPropertyBlock();
+            psr.GetPropertyBlock(mpb);
+            mpb.SetVectorArray(m_PropertyName, m_Colors.Select(x => new Vector4(x.r, x.g, x.b, 1.0f)).ToArray());
+            psr.SetPropertyBlock(mpb);
+        }
+    }
+
+    private void OnValidate()
+    {
+        OnEnable();
+    }
+}
--- a/Packages/src/Samples~/Demo/Animations/ColorArrayInjection.cs.meta
+++ b/Packages/src/Samples~/Demo/Animations/ColorArrayInjection.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: da4c2e90ecd3d4dd4a520099c08cf493
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
--- a/Packages/src/Samples~/Demo/Materials/UIAdditive+Color.shader
+++ b/Packages/src/Samples~/Demo/Materials/UIAdditive+Color.shader
@@ -0,0 +1,160 @@
+Shader "UI/Additive And Color"
+{
+    Properties
+    {
+        _MainTex ("Sprite Texture", 2D) = "white" {}
+        _Color ("Tint", Color) = (1,1,1,1)
+
+        _StencilComp ("Stencil Comparison", Float) = 8
+        _Stencil ("Stencil ID", Float) = 0
+        _StencilOp ("Stencil Operation", Float) = 0
+        _StencilWriteMask ("Stencil Write Mask", Float) = 255
+        _StencilReadMask ("Stencil Read Mask", Float) = 255
+
+        _ColorMask ("Color Mask", Float) = 15
+
+        [Toggle(UNITY_UI_ALPHACLIP)] _UseUIAlphaClip ("Use Alpha Clip", Float) = 0
+    }
+
+    SubShader
+    {
+        Tags
+        {
+            "Queue"="Transparent"
+            "IgnoreProjector"="True"
+            "RenderType"="Transparent"
+            "PreviewType"="Plane"
+            "CanUseSpriteAtlas"="True"
+        }
+
+        Stencil
+        {
+            Ref [_Stencil]
+            Comp [_StencilComp]
+            Pass [_StencilOp]
+            ReadMask [_StencilReadMask]
+            WriteMask [_StencilWriteMask]
+        }
+
+        Cull Off
+        Lighting Off
+        ZWrite Off
+        ZTest [unity_GUIZTestMode]
+        Fog { Mode Off }
+        Blend One One
+        ColorMask [_ColorMask]
+
+        Pass
+        {
+            Name "Default"
+            CGPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            #pragma target 2.0
+
+            #include "UnityCG.cginc"
+            #include "UnityUI.cginc"
+
+            #pragma multi_compile __ UNITY_UI_CLIP_RECT
+            #pragma multi_compile __ UNITY_UI_ALPHACLIP
+
+            struct appdata_t
+            {
+                float4 vertex : POSITION;
+                float4 color : COLOR;
+                float2 texcoord : TEXCOORD0;
+                UNITY_VERTEX_INPUT_INSTANCE_ID
+            };
+
+            struct v2f
+            {
+                float4 vertex : SV_POSITION;
+                fixed4 color : COLOR;
+                float2 texcoord : TEXCOORD0;
+                float4 worldPosition : TEXCOORD1;
+                float4 mask : TEXCOORD2;
+                UNITY_VERTEX_OUTPUT_STEREO
+            };
+
+            fixed4 _Color;
+            sampler2D _MainTex;
+            float4 _MainTex_ST;
+            fixed4 _TextureSampleAdd;
+            float4 _ClipRect;
+            float _UIMaskSoftnessX;
+            float _UIMaskSoftnessY;
+            int _UIVertexColorAlwaysGammaSpace;
+            #define LENGTH 4
+            float4 _Color2[4];
+
+            half3 _UIGammaToLinear(half3 value)
+            {
+                half3 low = 0.0849710 * value - 0.000163029;
+                half3 high = value * (value * (value * 0.265885 + 0.736584) - 0.00980184) + 0.00319697;
+
+                // We should be 0.5 away from any actual gamma value stored in an 8 bit channel
+                const half3 split = (half3)0.0725490; // Equals 18.5 / 255
+                return (value < split) ? low : high;
+            }
+
+            v2f vert(appdata_t v)
+            {
+                v2f OUT;
+                UNITY_SETUP_INSTANCE_ID(v);
+                UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
+                float4 vPosition = UnityObjectToClipPos(v.vertex);
+                OUT.worldPosition = v.vertex;
+                OUT.vertex = vPosition;
+
+                float2 pixelSize = vPosition.w;
+                pixelSize /= float2(1, 1) * abs(mul((float2x2)UNITY_MATRIX_P, _ScreenParams.xy));
+
+                float4 clampedRect = clamp(_ClipRect, -2e10, 2e10);
+                float2 maskUV = (v.vertex.xy - clampedRect.xy) / (clampedRect.zw - clampedRect.xy);
+                OUT.texcoord = TRANSFORM_TEX(v.texcoord.xy, _MainTex);
+                OUT.mask = float4(v.vertex.xy * 2 - clampedRect.xy - clampedRect.zw, 0.25 / (0.25 * half2(_UIMaskSoftnessX, _UIMaskSoftnessY) + abs(pixelSize.xy)));
+
+                if (_UIVertexColorAlwaysGammaSpace)
+                {
+                    #ifndef UNITY_COLORSPACE_GAMMA
+                    v.color.rgb = _UIGammaToLinear(v.color.rgb);
+                    #endif
+                }
+
+                OUT.color = v.color * _Color;
+                return OUT;
+            }
+
+            fixed4 frag(v2f IN) : SV_Target
+            {
+                //Round up the alpha color coming from the interpolator (to 1.0/256.0 steps)
+                //The incoming alpha could have numerical instability, which makes it very sensible to
+                //HDR color transparency blend, when it blends with the world's texture.
+                const half alphaPrecision = half(0xff);
+                const half invAlphaPrecision = half(1.0 / alphaPrecision);
+                IN.color.a = round(IN.color.a * alphaPrecision) * invAlphaPrecision;
+
+                half4 color = IN.color * (tex2D(_MainTex, IN.texcoord) + _TextureSampleAdd);
+
+                #ifdef UNITY_UI_CLIP_RECT
+                half2 m = saturate((_ClipRect.zw - _ClipRect.xy - abs(IN.mask.xy)) * IN.mask.zw);
+                color.a *= m.x * m.y;
+                #endif
+
+                #ifdef UNITY_UI_ALPHACLIP
+                clip(color.a - 0.001);
+                #endif
+
+                fixed3 fc = _Color2[floor(color.r*LENGTH-0.01)].rgb;
+                if (0.1 < fc.r || 0.1 < fc.g || 0.1 < fc.b)
+                {
+                    color.rgb = fc;
+                }
+                color.rgb *= color.a;
+
+                return color;
+            }
+            ENDCG
+        }
+    }
+}
--- a/Packages/src/Samples~/Demo/Materials/UIAdditive+Color.shader.meta
+++ b/Packages/src/Samples~/Demo/Materials/UIAdditive+Color.shader.meta
@@ -0,0 +1,9 @@
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+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
--- a/Packages/src/Samples~/Demo/Materials/UIParticle_Demo_Animatable+Color.mat
+++ b/Packages/src/Samples~/Demo/Materials/UIParticle_Demo_Animatable+Color.mat
@@ -0,0 +1,90 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
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+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: UIParticle_Demo_Animatable+Color
+  m_Shader: {fileID: 4800000, guid: 9cc9ed37ff19d40e684526abbc1d44a6, type: 3}
+  m_Parent: {fileID: 0}
+  m_ModifiedSerializedProperties: 0
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+  disabledShaderPasses: []
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+        m_Texture: {fileID: 0}
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+    m_Floats:
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+    - _ColorMask: 15
+    - _Cutoff: 0.5
+    - _DetailNormalMapScale: 1
+    - _DstBlend: 0
+    - _GlossMapScale: 1
+    - _Glossiness: 0.5
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+    - _UseUIAlphaClip: 0
+    - _ZWrite: 1
+    m_Colors:
+    - _Color: {r: 1, g: 1, b: 1, a: 1}
+    - _EmissionColor: {r: 0, g: 0, b: 0, a: 1}
+  m_BuildTextureStacks: []
--- a/Packages/src/Samples~/Demo/Materials/UIParticle_Demo_Animatable+Color.mat.meta
+++ b/Packages/src/Samples~/Demo/Materials/UIParticle_Demo_Animatable+Color.mat.meta
@@ -0,0 +1,8 @@
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--- a/Packages/src/Samples~/Demo/Materials/UIParticle_Demo_Animatable.mat
+++ b/Packages/src/Samples~/Demo/Materials/UIParticle_Demo_Animatable.mat
@@ -8,8 +8,8 @@ Material:
  m_PrefabInstance: {fileID: 0}
  m_PrefabAsset: {fileID: 0}
  m_Name: UIParticle_Demo_Animatable
-  m_Shader: {fileID: 4800000, guid: ecfa8f5732b504ef98fba10aa18d0326, type: 3}
-  m_ShaderKeywords: 
+  m_Shader: {fileID: 4800000, guid: 9cc9ed37ff19d40e684526abbc1d44a6, type: 3}
+  m_Parent: {fileID: 0}
  m_LightmapFlags: 4
  m_EnableInstancingVariants: 0
  m_DoubleSidedGI: 0
--- a/Packages/src/Samples~/Demo/Prefabs/UIParticle_Demo_Animatable.prefab
+++ b/Packages/src/Samples~/Demo/Prefabs/UIParticle_Demo_Animatable.prefab
@@ -69,6 +69,8 @@ MonoBehaviour:
  m_AnimatableProperties:
  - m_Name: _MainTex_ST
    m_Type: 1
+  - m_Name: _Color2
+    m_Type: 103
  m_Particles:
  - {fileID: 198637387440798640}
  m_MeshSharing: 0
@@ -88,6 +90,7 @@ GameObject:
  - component: {fileID: 199176884810573912}
  - component: {fileID: 222047182059782320}
  - component: {fileID: 95475093951880840}
+  - component: {fileID: 3543952012814938654}
  m_Layer: 0
  m_Name: UvAnimParticle
  m_TagString: Untagged
@@ -4864,3 +4867,21 @@ Animator:
  m_HasTransformHierarchy: 1
  m_AllowConstantClipSamplingOptimization: 1
  m_KeepAnimatorControllerStateOnDisable: 0
+--- !u!114 &3543952012814938654
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+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: da4c2e90ecd3d4dd4a520099c08cf493, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_PropertyName: _Color2
+  m_Colors:
+  - {r: 1, g: 0, b: 0, a: 1}
+  - {r: 0, g: 1, b: 0, a: 1}
+  - {r: 0, g: 0, b: 1, a: 1}
+  - {r: 1, g: 0.92156863, b: 0.015686275, a: 1}