优化demo

assets/effects/sprite-local-diffusion.effect

@@ -3,7 +3,7 @@
 // 原理：
 // 1. 画圆
 // 2. 圆心高亮（透明度=1.0），圆边缘不亮（透明度=0.0）
-// 3. 在原图像上方叠加圆
+// 4. 在原图像上方叠加圆
 
 CCEffect %{
   techniques:
@@ -21,7 +21,7 @@ CCEffect %{
 
         #  扩散颜色
         centerColor: {
-          value: [1.0, 0.0, 0.0, 1.0], 
+          value: [1.0, 1.0, 0.0, 1.0], 
           inspector: { 
             type: color,
             tooltip: "发光颜色"
@@ -30,7 +30,7 @@ CCEffect %{
 
         # 扩散起点坐标
         centerPoint: {
-          value: [0.5, 0.5],
+          value: [0.2, 0.2],
           inspector: {
             tooltip: "扩散起点坐标" 
           }
@@ -38,7 +38,7 @@ CCEffect %{
 
         # 扩散半径
         radius: {
-          value: 0.2,
+          value: 0.4,
           inspector: {
             tooltip: "扩散半径"
           }
@@ -98,15 +98,15 @@ CCProgram fs %{
     // 扩散颜色
     vec4 centerColor;
 
-    // // 因为现在cc不支持 vec2 数组，所以只能用 vec4 数组
-    // // 而一个 vec4 就包含两个 vec2 ，共计 4 个属性，所以如果数组是4，就表示有8个点了
-    // vec4 points[4];
-
     // 扩散起点坐标
     vec2 centerPoint;
 
     // 扩展半径
     float radius;
+
+    // 裁剪掉透明区域上的点光
+    // ps：编辑器还不支持 bool 类型的样子，因此没在 CCEffect 中定义 cropAlpha
+    bool cropAlpha;
   }
 
   /**
@@ -116,13 +116,15 @@ CCProgram fs %{
     // 计算当前 uv 到扩散起点的距离
     float dis = distance(v_uv0, centerPoint);
 
-    // 第一步裁剪
+    float a = 1.0 ;
-    // 找出扩散范围，扩散范围为1.0透明度，其他范围为0.0透明度
-    float a = step(dis, radius);
 
-    // // 第二步裁剪
+    // 裁剪掉透明区域上的点光 
-    // // 本来透明的uv不要
+    if (cropAlpha) {
-    // a *= step(0.01, textureColor.a);
+      a *= step(0.01, textureColor.a);
+    }
+
+    // 裁剪掉扩散范围外的uv
+    // a *= step(dis, radius);
 
     // 加入从中心往外渐变的效果
     a *= 1.0 - (dis / radius);

assets/effects/sprite-local-diffusion.effect.meta

@@ -5,11 +5,11 @@
     {
       "glsl1": {
         "vert": "\nprecision highp float;\nuniform mat4 cc_matViewProj;\nuniform mat4 cc_matWorld;\n\nattribute vec3 a_position;\nattribute vec4 a_color;\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nattribute vec2 a_uv0;\nvarying vec2 v_uv0;\n#endif\n\nvoid main () {\n  vec4 pos = vec4(a_position, 1);\n\n  #if CC_USE_MODEL\n  pos = cc_matViewProj * cc_matWorld * pos;\n  #else\n  pos = cc_matViewProj * pos;\n  #endif\n\n  #if USE_TEXTURE\n  v_uv0 = a_uv0;\n  #endif\n\n  v_color = a_color;\n\n  gl_Position = pos;\n}\n",
-        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform float alphaThreshold;\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nvarying vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_DIFFUSION\nuniform vec4 centerColor;\nuniform vec2 centerPoint;\nuniform float radius;\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addDiffusionColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {\n\n  float dis = distance(v_uv0, centerPoint);\n\n  float a = step(dis, radius);\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 diffusionColor = centerColor * a;\n\n  return textureColor * textureColor.a + diffusionColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture2D(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_DIFFUSION\n  gl_FragColor = addDiffusionColor(gl_FragColor, centerPoint, radius, centerColor);\n  #endif\n}\n"
+        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform float alphaThreshold;\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nvarying vec4 v_color;\n\n#if USE_TEXTURE\nvarying vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_DIFFUSION\nuniform vec4 centerColor;\nuniform vec2 centerPoint;\nuniform float radius;\nuniform bool cropAlpha;\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addDiffusionColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {\n\n  float dis = distance(v_uv0, centerPoint);\n\n  float a = 1.0 ;\n\n  if (cropAlpha) {\n    a *= step(0.01, textureColor.a);\n  }\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 diffusionColor = centerColor * a;\n\n  return textureColor * textureColor.a + diffusionColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture2D(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_DIFFUSION\n  gl_FragColor = addDiffusionColor(gl_FragColor, centerPoint, radius, centerColor);\n  #endif\n}\n"
       },
       "glsl3": {
         "vert": "\nprecision highp float;\nuniform CCGlobal {\n  vec4 cc_time;\n\n  vec4 cc_screenSize;\n\n  vec4 cc_screenScale;\n\n  vec4 cc_nativeSize;\n\n  mat4 cc_matView;\n  mat4 cc_matViewInv;\n  mat4 cc_matProj;\n  mat4 cc_matProjInv;\n  mat4 cc_matViewProj;\n  mat4 cc_matViewProjInv;\n  vec4 cc_cameraPos;\n\n  vec4 cc_exposure;\n\n  vec4 cc_mainLitDir;\n\n  vec4 cc_mainLitColor;\n\n  vec4 cc_ambientSky;\n  vec4 cc_ambientGround;\n};\nuniform CCLocal {\n  mat4 cc_matWorld;\n  mat4 cc_matWorldIT;\n};\n\nin vec3 a_position;\nin vec4 a_color;\nout vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 a_uv0;\nout vec2 v_uv0;\n#endif\n\nvoid main () {\n  vec4 pos = vec4(a_position, 1);\n\n  #if CC_USE_MODEL\n  pos = cc_matViewProj * cc_matWorld * pos;\n  #else\n  pos = cc_matViewProj * pos;\n  #endif\n\n  #if USE_TEXTURE\n  v_uv0 = a_uv0;\n  #endif\n\n  v_color = a_color;\n\n  gl_Position = pos;\n}\n",
-        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform ALPHA_TEST {\n    float alphaThreshold;\n  }\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nin vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_DIFFUSION\nuniform Diffusion {\n\n  vec4 centerColor;\n\n  vec2 centerPoint;\n\n  float radius;\n}\n\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addDiffusionColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {\n\n  float dis = distance(v_uv0, centerPoint);\n\n  float a = step(dis, radius);\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 diffusionColor = centerColor * a;\n\n  return textureColor * textureColor.a + diffusionColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_DIFFUSION\n  gl_FragColor = addDiffusionColor(gl_FragColor, centerPoint, radius, centerColor);\n  #endif\n}\n"
+        "frag": "\nprecision highp float;\n\n#if USE_ALPHA_TEST\n  \n  uniform ALPHA_TEST {\n    float alphaThreshold;\n  }\n#endif\n\nvoid ALPHA_TEST (in vec4 color) {\n  #if USE_ALPHA_TEST\n      if (color.a < alphaThreshold) discard;\n  #endif\n}\n\nvoid ALPHA_TEST (in float alpha) {\n  #if USE_ALPHA_TEST\n      if (alpha < alphaThreshold) discard;\n  #endif\n}\n\nin vec4 v_color;\n\n#if USE_TEXTURE\nin vec2 v_uv0;\nuniform sampler2D texture;\n#endif\n\n#if ENABLE_DIFFUSION\nuniform Diffusion {\n\n  vec4 centerColor;\n\n  vec2 centerPoint;\n\n  float radius;\n\n  bool cropAlpha;\n}\n\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addDiffusionColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {\n\n  float dis = distance(v_uv0, centerPoint);\n\n  float a = 1.0 ;\n\n  if (cropAlpha) {\n    a *= step(0.01, textureColor.a);\n  }\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 diffusionColor = centerColor * a;\n\n  return textureColor * textureColor.a + diffusionColor;\n}\n#endif\n\nvoid main () {\n  vec4 o = vec4(1, 1, 1, 1);\n\n  #if USE_TEXTURE\n  o *= texture(texture, v_uv0);\n    #if CC_USE_ALPHA_ATLAS_TEXTURE\n    o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;\n    #endif\n  #endif\n\n  o *= v_color;\n\n  ALPHA_TEST(o);\n\n  gl_FragColor = o;\n  \n  #if ENABLE_DIFFUSION\n  gl_FragColor = addDiffusionColor(gl_FragColor, centerPoint, radius, centerColor);\n  #endif\n}\n"
       }
     }
   ],

assets/materials/sprite-local-diffusion.mtl

@@ -11,6 +11,6 @@
     "ENABLE_DIFFUSION": true
   },
   "_props": {
-    "radius": 0.2
+    "radius": 0.4
   }
 }

assets/scenes/LocalDiffusionEffectScene.fire

@@ -78,10 +78,10 @@
     "_active": true,
     "_components": [
       {
-        "__id__": 113
+        "__id__": 125
       },
       {
-        "__id__": 114
+        "__id__": 126
       }
     ],
     "_prefab": null,
@@ -171,7 +171,7 @@
       "array": [
         0,
         0,
-        393.5138244914885,
+        492.7684547533456,
         0,
         0,
         0,
@@ -245,13 +245,13 @@
         "__id__": 9
       },
       {
-        "__id__": 97
+        "__id__": 109
       }
     ],
     "_active": true,
     "_components": [
       {
-        "__id__": 112
+        "__id__": 124
       }
     ],
     "_prefab": null,
@@ -428,7 +428,7 @@
   },
   {
     "__type__": "cc.Node",
-    "_name": "Sliders",
+    "_name": "Controller",
     "_objFlags": 0,
     "_parent": {
       "__id__": 5
@@ -448,15 +448,18 @@
       },
       {
         "__id__": 78
+      },
+      {
+        "__id__": 95
       }
     ],
     "_active": true,
     "_components": [
       {
-        "__id__": 95
+        "__id__": 107
       },
       {
-        "__id__": 96
+        "__id__": 108
       }
     ],
     "_prefab": null,
@@ -471,7 +474,7 @@
     "_contentSize": {
       "__type__": "cc.Size",
       "width": 576,
-      "height": 444
+      "height": 540
     },
     "_anchorPoint": {
       "__type__": "cc.Vec2",
@@ -1698,7 +1701,7 @@
       "__type__": "TypedArray",
       "ctor": "Float64Array",
       "array": [
-        0,
+        230.40000000000006,
         0,
         0,
         0,
@@ -1877,7 +1880,7 @@
     "_N$handle": {
       "__id__": 37
     },
-    "_N$progress": 0,
+    "_N$progress": 1,
     "_id": "35YKg9gStEhLErp2N/639Q"
   },
   {
@@ -1986,8 +1989,8 @@
       }
     ],
     "_useOriginalSize": false,
-    "_string": "0.10 | 26",
+    "_string": "1.00 | 255",
-    "_N$string": "0.10 | 26",
+    "_N$string": "1.00 | 255",
     "_fontSize": 40,
     "_lineHeight": 40,
     "_enableWrapText": true,
@@ -3981,7 +3984,7 @@
       "__type__": "TypedArray",
       "ctor": "Float64Array",
       "array": [
-        23.039999999999992,
+        92.16000000000005,
         0,
         0,
         0,
@@ -4160,7 +4163,7 @@
     "_N$handle": {
       "__id__": 88
     },
-    "_N$progress": 0.1,
+    "_N$progress": 0.4,
     "_id": "c2uNTLxCdF2oHJ+IS0EBLe"
   },
   {
@@ -4312,6 +4315,589 @@
     "_originalHeight": 0,
     "_id": "785zd8XfJMALOKEKNQ7O0m"
   },
+  {
+    "__type__": "cc.Node",
+    "_name": "CropAlphaToggle",
+    "_objFlags": 0,
+    "_parent": {
+      "__id__": 9
+    },
+    "_children": [
+      {
+        "__id__": 96
+      },
+      {
+        "__id__": 99
+      }
+    ],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 106
+      }
+    ],
+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 576,
+      "height": 60
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
+      "array": [
+        0,
+        -510,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        1,
+        1
+      ]
+    },
+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
+    "groupIndex": 0,
+    "_id": "0bSVqNIRdKirxNt6luVamv"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "DescLabel",
+    "_objFlags": 0,
+    "_parent": {
+      "__id__": 95
+    },
+    "_children": [],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 97
+      },
+      {
+        "__id__": 98
+      }
+    ],
+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 432,
+      "height": 40
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 1,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
+      "array": [
+        144,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        1,
+        1
+      ]
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+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
+    "groupIndex": 0,
+    "_id": "2a4P++lclCLYLPc4P9YhfR"
+  },
+  {
+    "__type__": "cc.Label",
+    "_name": "SliderDescLabel<Label>",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 96
+    },
+    "_enabled": true,
+    "_materials": [
+      {
+        "__uuid__": "eca5d2f2-8ef6-41c2-bbe6-f9c79d09c432"
+      }
+    ],
+    "_useOriginalSize": false,
+    "_string": "裁剪透明区域的光：",
+    "_N$string": "裁剪透明区域的光：",
+    "_fontSize": 40,
+    "_lineHeight": 40,
+    "_enableWrapText": true,
+    "_N$file": null,
+    "_isSystemFontUsed": true,
+    "_spacingX": 0,
+    "_batchAsBitmap": false,
+    "_N$horizontalAlign": 0,
+    "_N$verticalAlign": 1,
+    "_N$fontFamily": "Arial",
+    "_N$overflow": 2,
+    "_N$cacheMode": 0,
+    "_id": "d6tUp0/3xLs6nI//wYjaM0"
+  },
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+    "_name": "",
+    "_objFlags": 0,
+    "node": {
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+    },
+    "_enabled": true,
+    "alignMode": 1,
+    "_target": null,
+    "_alignFlags": 45,
+    "_left": 0,
+    "_right": 0.25,
+    "_top": 10,
+    "_bottom": 10,
+    "_verticalCenter": 0,
+    "_horizontalCenter": 0,
+    "_isAbsLeft": true,
+    "_isAbsRight": false,
+    "_isAbsTop": true,
+    "_isAbsBottom": true,
+    "_isAbsHorizontalCenter": true,
+    "_isAbsVerticalCenter": true,
+    "_originalWidth": 113.38,
+    "_originalHeight": 50.4,
+    "_id": "77UPZovv1IvK2+wcVSVh3U"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "Toggle",
+    "_objFlags": 0,
+    "_parent": {
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+    },
+    "_children": [
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+      },
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+    "_active": true,
+    "_components": [
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+      }
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+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 28,
+      "height": 28
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
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+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
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+    "_name": "Background",
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+    "_parent": {
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+    "_children": [],
+    "_active": true,
+    "_components": [
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+      }
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+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 28,
+      "height": 28
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
+      "array": [
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+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
+    "groupIndex": 0,
+    "_id": "53uZJPYSJJrr07Weqcqjdo"
+  },
+  {
+    "__type__": "cc.Sprite",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 100
+    },
+    "_enabled": true,
+    "_materials": [
+      {
+        "__uuid__": "eca5d2f2-8ef6-41c2-bbe6-f9c79d09c432"
+      }
+    ],
+    "_srcBlendFactor": 770,
+    "_dstBlendFactor": 771,
+    "_spriteFrame": {
+      "__uuid__": "6827ca32-0107-4552-bab2-dfb31799bb44"
+    },
+    "_type": 0,
+    "_sizeMode": 1,
+    "_fillType": 0,
+    "_fillCenter": {
+      "__type__": "cc.Vec2",
+      "x": 0,
+      "y": 0
+    },
+    "_fillStart": 0,
+    "_fillRange": 0,
+    "_isTrimmedMode": true,
+    "_atlas": null,
+    "_id": "11SIAqt1BIjZwYIAAj+yu7"
+  },
+  {
+    "__type__": "cc.Node",
+    "_name": "checkmark",
+    "_objFlags": 0,
+    "_parent": {
+      "__id__": 99
+    },
+    "_children": [],
+    "_active": true,
+    "_components": [
+      {
+        "__id__": 103
+      }
+    ],
+    "_prefab": null,
+    "_opacity": 255,
+    "_color": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_contentSize": {
+      "__type__": "cc.Size",
+      "width": 28,
+      "height": 28
+    },
+    "_anchorPoint": {
+      "__type__": "cc.Vec2",
+      "x": 0.5,
+      "y": 0.5
+    },
+    "_trs": {
+      "__type__": "TypedArray",
+      "ctor": "Float64Array",
+      "array": [
+        0,
+        0,
+        0,
+        0,
+        0,
+        0,
+        1,
+        1,
+        1,
+        1
+      ]
+    },
+    "_eulerAngles": {
+      "__type__": "cc.Vec3",
+      "x": 0,
+      "y": 0,
+      "z": 0
+    },
+    "_skewX": 0,
+    "_skewY": 0,
+    "_is3DNode": false,
+    "_groupIndex": 0,
+    "groupIndex": 0,
+    "_id": "d7A3s24e5BWIfNNJ0oexhv"
+  },
+  {
+    "__type__": "cc.Sprite",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 102
+    },
+    "_enabled": true,
+    "_materials": [
+      {
+        "__uuid__": "eca5d2f2-8ef6-41c2-bbe6-f9c79d09c432"
+      }
+    ],
+    "_srcBlendFactor": 770,
+    "_dstBlendFactor": 771,
+    "_spriteFrame": {
+      "__uuid__": "90004ad6-2f6d-40e1-93ef-b714375c6f06"
+    },
+    "_type": 0,
+    "_sizeMode": 2,
+    "_fillType": 0,
+    "_fillCenter": {
+      "__type__": "cc.Vec2",
+      "x": 0,
+      "y": 0
+    },
+    "_fillStart": 0,
+    "_fillRange": 0,
+    "_isTrimmedMode": false,
+    "_atlas": null,
+    "_id": "d2ULg6zxZKs5LVf0/K6jfr"
+  },
+  {
+    "__type__": "cc.Widget",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 99
+    },
+    "_enabled": true,
+    "alignMode": 1,
+    "_target": null,
+    "_alignFlags": 8,
+    "_left": 0.75,
+    "_right": 0,
+    "_top": 0,
+    "_bottom": 0,
+    "_verticalCenter": 0,
+    "_horizontalCenter": 0,
+    "_isAbsLeft": false,
+    "_isAbsRight": true,
+    "_isAbsTop": true,
+    "_isAbsBottom": true,
+    "_isAbsHorizontalCenter": true,
+    "_isAbsVerticalCenter": true,
+    "_originalWidth": 0,
+    "_originalHeight": 0,
+    "_id": "f39gCrxQlNa7kZ9Ne/c+/b"
+  },
+  {
+    "__type__": "cc.Toggle",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 99
+    },
+    "_enabled": true,
+    "_normalMaterial": {
+      "__uuid__": "eca5d2f2-8ef6-41c2-bbe6-f9c79d09c432"
+    },
+    "_grayMaterial": null,
+    "duration": 0.1,
+    "zoomScale": 1.2,
+    "clickEvents": [],
+    "_N$interactable": true,
+    "_N$enableAutoGrayEffect": false,
+    "_N$transition": 3,
+    "transition": 3,
+    "_N$normalColor": {
+      "__type__": "cc.Color",
+      "r": 214,
+      "g": 214,
+      "b": 214,
+      "a": 255
+    },
+    "_N$pressedColor": {
+      "__type__": "cc.Color",
+      "r": 211,
+      "g": 211,
+      "b": 211,
+      "a": 255
+    },
+    "pressedColor": {
+      "__type__": "cc.Color",
+      "r": 211,
+      "g": 211,
+      "b": 211,
+      "a": 255
+    },
+    "_N$hoverColor": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "hoverColor": {
+      "__type__": "cc.Color",
+      "r": 255,
+      "g": 255,
+      "b": 255,
+      "a": 255
+    },
+    "_N$disabledColor": {
+      "__type__": "cc.Color",
+      "r": 124,
+      "g": 124,
+      "b": 124,
+      "a": 255
+    },
+    "_N$normalSprite": null,
+    "_N$pressedSprite": null,
+    "pressedSprite": null,
+    "_N$hoverSprite": null,
+    "hoverSprite": null,
+    "_N$disabledSprite": null,
+    "_N$target": {
+      "__id__": 100
+    },
+    "_N$isChecked": true,
+    "toggleGroup": null,
+    "checkMark": {
+      "__id__": 103
+    },
+    "checkEvents": [],
+    "_id": "7bKEFTsjNDwasqgjeKI1fQ"
+  },
+  {
+    "__type__": "cc.Widget",
+    "_name": "",
+    "_objFlags": 0,
+    "node": {
+      "__id__": 95
+    },
+    "_enabled": true,
+    "alignMode": 1,
+    "_target": null,
+    "_alignFlags": 40,
+    "_left": 0,
+    "_right": 0,
+    "_top": 0,
+    "_bottom": 0,
+    "_verticalCenter": 0,
+    "_horizontalCenter": 0,
+    "_isAbsLeft": true,
+    "_isAbsRight": true,
+    "_isAbsTop": true,
+    "_isAbsBottom": true,
+    "_isAbsHorizontalCenter": true,
+    "_isAbsVerticalCenter": true,
+    "_originalWidth": 461.38,
+    "_originalHeight": 0,
+    "_id": "efiFYhAgxFpY9khUf6wQ/S"
+  },
   {
     "__type__": "cc.Widget",
     "_name": "",
@@ -4350,7 +4936,7 @@
     "_layoutSize": {
       "__type__": "cc.Size",
       "width": 576,
-      "height": 444
+      "height": 540
     },
     "_resize": 1,
     "_N$layoutType": 2,
@@ -4381,31 +4967,31 @@
     },
     "_children": [
       {
-        "__id__": 98
+        "__id__": 110
       },
       {
-        "__id__": 100
+        "__id__": 112
       },
       {
-        "__id__": 102
+        "__id__": 114
       },
       {
-        "__id__": 104
+        "__id__": 116
       },
       {
-        "__id__": 106
+        "__id__": 118
       },
       {
-        "__id__": 108
+        "__id__": 120
       }
     ],
     "_active": true,
     "_components": [
       {
-        "__id__": 110
+        "__id__": 122
       },
       {
-        "__id__": 111
+        "__id__": 123
       }
     ],
     "_prefab": null,
@@ -4461,13 +5047,13 @@
     "_name": "ball_0",
     "_objFlags": 0,
     "_parent": {
-      "__id__": 97
+      "__id__": 109
     },
     "_children": [],
     "_active": true,
     "_components": [
       {
-        "__id__": 99
+        "__id__": 111
       }
     ],
     "_prefab": null,
@@ -4523,7 +5109,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 98
+      "__id__": 110
     },
     "_enabled": true,
     "_materials": [
@@ -4555,13 +5141,13 @@
     "_name": "cocos_logo",
     "_objFlags": 0,
     "_parent": {
-      "__id__": 97
+      "__id__": 109
     },
     "_children": [],
     "_active": true,
     "_components": [
       {
-        "__id__": 101
+        "__id__": 113
       }
     ],
     "_prefab": null,
@@ -4617,7 +5203,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 100
+      "__id__": 112
     },
     "_enabled": true,
     "_materials": [
@@ -4649,13 +5235,13 @@
     "_name": "ball_1",
     "_objFlags": 0,
     "_parent": {
-      "__id__": 97
+      "__id__": 109
     },
     "_children": [],
     "_active": true,
     "_components": [
       {
-        "__id__": 103
+        "__id__": 115
       }
     ],
     "_prefab": null,
@@ -4711,7 +5297,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 102
+      "__id__": 114
     },
     "_enabled": true,
     "_materials": [
@@ -4743,13 +5329,13 @@
     "_name": "video_btn",
     "_objFlags": 0,
     "_parent": {
-      "__id__": 97
+      "__id__": 109
     },
     "_children": [],
     "_active": true,
     "_components": [
       {
-        "__id__": 105
+        "__id__": 117
       }
     ],
     "_prefab": null,
@@ -4805,7 +5391,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 104
+      "__id__": 116
     },
     "_enabled": true,
     "_materials": [
@@ -4837,13 +5423,13 @@
     "_name": "SystemFont",
     "_objFlags": 0,
     "_parent": {
-      "__id__": 97
+      "__id__": 109
     },
     "_children": [],
     "_active": true,
     "_components": [
       {
-        "__id__": 107
+        "__id__": 119
       }
     ],
     "_prefab": null,
@@ -4899,7 +5485,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 106
+      "__id__": 118
     },
     "_enabled": true,
     "_materials": [
@@ -4929,13 +5515,13 @@
     "_name": "BmFont",
     "_objFlags": 0,
     "_parent": {
-      "__id__": 97
+      "__id__": 109
     },
     "_children": [],
     "_active": true,
     "_components": [
       {
-        "__id__": 109
+        "__id__": 121
       }
     ],
     "_prefab": null,
@@ -4991,7 +5577,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 108
+      "__id__": 120
     },
     "_enabled": true,
     "_materials": [
@@ -5023,7 +5609,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 97
+      "__id__": 109
     },
     "_enabled": true,
     "alignMode": 1,
@@ -5050,7 +5636,7 @@
     "_name": "",
     "_objFlags": 0,
     "node": {
-      "__id__": 97
+      "__id__": 109
     },
     "_enabled": true,
     "_layoutSize": {

assets/scripts/LocalDiffusionCtrl.ts

@@ -2,9 +2,7 @@ const { ccclass, property } = cc._decorator;
 
 @ccclass
 export default class LocalDiffusionCtrl extends cc.Component {
-    private _centerPointPos: cc.Vec2 = cc.v2(0.5, 0.5);
+    private _localDiffusionUniform: LocalDiffusionUniform = new LocalDiffusionUniform();
-    private _centerColor: cc.Color = cc.Color.RED;
-    private _radius: number = 0.2;
 
     onEnable() {
         this.node.on(cc.Node.EventType.TOUCH_START, this._onTouchStart, this);
@@ -28,50 +26,51 @@ export default class LocalDiffusionCtrl extends cc.Component {
 
         // 将触摸点转换为OPENGL坐标系并归一化
         // OpenGl 坐标系原点在左上角
-        this._centerPointPos = cc.v2(
+        this._localDiffusionUniform.certerPoint = cc.v2(
             this.node.anchorX + touchPointInNodeSpace.x / this.node.width,
             1 - (this.node.anchorY + touchPointInNodeSpace.y / this.node.height)
         );
 
-        this._updateMaterial({
+        this._updateMaterial();
-            centerColor: this._centerColor,
-            certerPoint: this._centerPointPos,
-            radius: this._radius
-        });
     }
 
-    private _onPropertyChange(color: cc.Color, radius: number) {
+    private _onPropertyChange(localDiffusionUniform: LocalDiffusionUniform) {
-        this._centerColor = color;
+        this._localDiffusionUniform.centerColor = localDiffusionUniform.centerColor;
-        this._radius = radius;
+        this._localDiffusionUniform.radius = localDiffusionUniform.radius;
-        this._updateMaterial({
+        this._localDiffusionUniform.cropAlpha = localDiffusionUniform.cropAlpha;
-            centerColor: this._centerColor,
+        this._updateMaterial();
-            certerPoint: this._centerPointPos,
-            radius: this._radius
-        });
     }
 
-    private _updateMaterial(param: {
+    private _updateMaterial() {
-        /**
-         * 中心点颜色
-         */
-        centerColor: cc.Color;
-
-        /**
-         * 中心点坐标 ([0.0, 1.0], [0.0, 1.0])
-         */
-        certerPoint: cc.Vec2;
-
-        /**
-         * 扩散半径 [0.0, 1.0]
-         */
-        radius: number;
-    }) {
         this.getComponents(cc.RenderComponent).forEach(renderComponent => {
             let material: cc.Material = renderComponent.getMaterial(0);
-            material.setProperty("centerColor", param.centerColor);
+            material.setProperty("centerColor", this._localDiffusionUniform.centerColor);
-            material.setProperty("centerPoint", param.certerPoint);
+            material.setProperty("centerPoint", this._localDiffusionUniform.certerPoint);
-            material.setProperty("radius", param.radius);
+            material.setProperty("radius", this._localDiffusionUniform.radius);
+            material.setProperty("cropAlpha", this._localDiffusionUniform.cropAlpha);
             renderComponent.setMaterial(0, material);
         });
     }
 }
+
+export class LocalDiffusionUniform {
+    /**
+     * 中心点颜色
+     */
+    centerColor: cc.Color = cc.Color.YELLOW;
+
+    /**
+     * 中心点坐标 ([0.0, 1.0], [0.0, 1.0])
+     */
+    certerPoint: cc.Vec2 = cc.v2(0.5, 0.5);
+
+    /**
+     * 扩散半径 [0.0, 1.0]
+     */
+    radius: number = 0.5;
+
+    /**
+     * 是否裁剪掉透明区域上的点光
+     */
+    cropAlpha: boolean = true;
+}

assets/scripts/LocalDiffusionEffectScene.ts

@@ -1,4 +1,4 @@
-import LocalDiffusionCtrl from "./LocalDiffusionCtrl";
+import LocalDiffusionCtrl, { LocalDiffusionUniform } from "./LocalDiffusionCtrl";
 
 const { ccclass, property } = cc._decorator;
 
@@ -19,25 +19,29 @@ export default class LocalDiffusionEffectScene extends cc.Component {
     private _radiuSlider: cc.Slider = null;
     private _radiuSliderLabel: cc.Label = null;
 
+    private _cropAlphaToggle: cc.Toggle = null;
+
     private _examplesParentNode: cc.Node = null;
 
     onLoad() {
         cc.dynamicAtlasManager.enabled = false;
 
-        this._redSlider = cc.find("Canvas/Content/Sliders/ColorRedSlider/Slider").getComponent(cc.Slider);
+        this._redSlider = cc.find("Canvas/Content/Controller/ColorRedSlider/Slider").getComponent(cc.Slider);
-        this._redSliderLabel = cc.find("Canvas/Content/Sliders/ColorRedSlider/ValueLabel").getComponent(cc.Label);
+        this._redSliderLabel = cc.find("Canvas/Content/Controller/ColorRedSlider/ValueLabel").getComponent(cc.Label);
 
-        this._greenSlider = cc.find("Canvas/Content/Sliders/ColorGreenSlider/Slider").getComponent(cc.Slider);
+        this._greenSlider = cc.find("Canvas/Content/Controller/ColorGreenSlider/Slider").getComponent(cc.Slider);
-        this._greenSliderLabel = cc.find("Canvas/Content/Sliders/ColorGreenSlider/ValueLabel").getComponent(cc.Label);
+        this._greenSliderLabel = cc.find("Canvas/Content/Controller/ColorGreenSlider/ValueLabel").getComponent(cc.Label);
 
-        this._blueSlider = cc.find("Canvas/Content/Sliders/ColorBlueSlider/Slider").getComponent(cc.Slider);
+        this._blueSlider = cc.find("Canvas/Content/Controller/ColorBlueSlider/Slider").getComponent(cc.Slider);
-        this._blueSliderLabel = cc.find("Canvas/Content/Sliders/ColorBlueSlider/ValueLabel").getComponent(cc.Label);
+        this._blueSliderLabel = cc.find("Canvas/Content/Controller/ColorBlueSlider/ValueLabel").getComponent(cc.Label);
 
-        this._alphaSlider = cc.find("Canvas/Content/Sliders/ColorAlphaSlider/Slider").getComponent(cc.Slider);
+        this._alphaSlider = cc.find("Canvas/Content/Controller/ColorAlphaSlider/Slider").getComponent(cc.Slider);
-        this._alphaSliderLabel = cc.find("Canvas/Content/Sliders/ColorAlphaSlider/ValueLabel").getComponent(cc.Label);
+        this._alphaSliderLabel = cc.find("Canvas/Content/Controller/ColorAlphaSlider/ValueLabel").getComponent(cc.Label);
 
-        this._radiuSlider = cc.find("Canvas/Content/Sliders/RadiuSlider/Slider").getComponent(cc.Slider);
+        this._radiuSlider = cc.find("Canvas/Content/Controller/RadiuSlider/Slider").getComponent(cc.Slider);
-        this._radiuSliderLabel = cc.find("Canvas/Content/Sliders/RadiuSlider/ValueLabel").getComponent(cc.Label);
+        this._radiuSliderLabel = cc.find("Canvas/Content/Controller/RadiuSlider/ValueLabel").getComponent(cc.Label);
+
+        this._cropAlphaToggle = cc.find("Canvas/Content/Controller/CropAlphaToggle/Toggle").getComponent(cc.Toggle);
 
         // 代码添加控制脚本
         this._examplesParentNode = cc.find("Canvas/Content/Examples");
@@ -47,26 +51,28 @@ export default class LocalDiffusionEffectScene extends cc.Component {
     }
 
     onEnable() {
-        this._redSlider.node.on("slide", this._onSliderChanged, this);
+        this._redSlider.node.on("slide", this._onPropertyChanged, this);
-        this._greenSlider.node.on("slide", this._onSliderChanged, this);
+        this._greenSlider.node.on("slide", this._onPropertyChanged, this);
-        this._blueSlider.node.on("slide", this._onSliderChanged, this);
+        this._blueSlider.node.on("slide", this._onPropertyChanged, this);
-        this._alphaSlider.node.on("slide", this._onSliderChanged, this);
+        this._alphaSlider.node.on("slide", this._onPropertyChanged, this);
-        this._radiuSlider.node.on("slide", this._onSliderChanged, this);
+        this._radiuSlider.node.on("slide", this._onPropertyChanged, this);
+        this._cropAlphaToggle.node.on("toggle", this._onPropertyChanged, this);
     }
 
     onDisable() {
-        this._redSlider.node.off("slide", this._onSliderChanged, this);
+        this._redSlider.node.off("slide", this._onPropertyChanged, this);
-        this._greenSlider.node.off("slide", this._onSliderChanged, this);
+        this._greenSlider.node.off("slide", this._onPropertyChanged, this);
-        this._blueSlider.node.off("slide", this._onSliderChanged, this);
+        this._blueSlider.node.off("slide", this._onPropertyChanged, this);
-        this._alphaSlider.node.off("slide", this._onSliderChanged, this);
+        this._alphaSlider.node.off("slide", this._onPropertyChanged, this);
-        this._radiuSlider.node.off("slide", this._onSliderChanged, this);
+        this._radiuSlider.node.off("slide", this._onPropertyChanged, this);
+        this._cropAlphaToggle.node.off("toggle", this._onPropertyChanged, this);
     }
 
     start() {
-        this._onSliderChanged();
+        this._onPropertyChanged();
     }
 
-    private _onSliderChanged() {
+    private _onPropertyChanged() {
         // 更新进度条值 Label 文本
         this._redSliderLabel.string = `${this._redSlider.progress.toFixed(2)} | ${Math.round(255 * this._redSlider.progress)}`;
         this._greenSliderLabel.string = `${this._greenSlider.progress.toFixed(2)} | ${Math.round(255 * this._greenSlider.progress)}`;
@@ -76,16 +82,16 @@ export default class LocalDiffusionEffectScene extends cc.Component {
 
         // 通知子节点更新材质
         this._examplesParentNode.children.forEach(childNode => {
-            childNode.emit(
+            childNode.emit("on_property_change", <LocalDiffusionUniform>{
-                "on_property_change",
+                centerColor: cc.color(
-                cc.color(
                     Math.round(255 * this._redSlider.progress),
                     Math.round(255 * this._greenSlider.progress),
                     Math.round(255 * this._blueSlider.progress),
                     Math.round(255 * this._alphaSlider.progress)
                 ),
-                this._radiuSlider.progress
+                radius: this._radiuSlider.progress,
-            );
+                cropAlpha: this._cropAlphaToggle.isChecked
+            });
         });
     }
 }