diff --git a/README.md b/README.md
index a469969..ac9184a 100755
--- a/README.md
+++ b/README.md
@@ -19,6 +19,8 @@
 * [Cocos Creator Shader Effect 系列 - 4 - 老照片特效](https://www.jianshu.com/p/711a54ff2fa0)
 * [Cocos Creator Shader Effect 系列 - 5 - 马赛克/像素化特效](https://www.jianshu.com/p/40e72ab76afd)
 * [Cocos Creator Shader Effect 系列 - 6 - 内发光特效](https://www.jianshu.com/p/326b73f86ecc)
+* [Cocos Creator Shader Effect 系列 - 7 - 点光/扫光特效](https://www.jianshu.com/p/8ff03b34b0bd)
+
 
 * 编写中...
 
@@ -26,11 +28,11 @@
 
 ## 三、特效预览
 
-### 扫光（实现原理，可能在编写中，催更可到底部扫码，支持急件~🤣）(2020.01.13更新）
+### 扫光（实现原理同点光一样，可参考[点光实现原理文章](https://www.jianshu.com/p/711a54ff2fa0)）(2020.01.13更新）
 
 ![](static/effects/2d-sprite-flash-light.gif)
 
-### 点光（实现原理，可能在编写中，催更可到底部扫码，支持急件~🤣）(2020.01.12更新）
+### 点光（[实现原理](https://www.jianshu.com/p/8ff03b34b0bd)）(2020.01.12更新）
 
 ![](static/effects/2d-sprite-point-light.gif)
 
diff --git a/assets/effects/sprite-point-light.effect b/assets/effects/sprite-point-light.effect
index d3a90a6..04a5715 100644
--- a/assets/effects/sprite-point-light.effect
+++ b/assets/effects/sprite-point-light.effect
@@ -117,7 +117,7 @@ CCProgram fs %{
    * 添加某个扩散点后混合后的纹理颜色
    */
   vec4 addLightColor(vec4 textureColor, vec2 centerPoint, float radius, vec4 centerColor) {
-    // 计算当前 uv 到扩散起点的距离
+    // 计算当前 uv 到圆心起点的距离
     float dis = distance(v_uv0, centerPoint);
 
     float a = 1.0 ;
@@ -127,7 +127,7 @@ CCProgram fs %{
       a *= step(0.01, textureColor.a);
     }
 
-    // 裁剪掉扩散范围外的uv（迷雾效果）
+    // 裁剪掉圆范围外的uv（迷雾效果）
     if (!enableFog) {
       a *= step(dis, radius);
     }
@@ -135,11 +135,11 @@ CCProgram fs %{
     // 加入从中心往外渐变的效果
     a *= 1.0 - (dis / radius);
 
-    // 计算出扩散范围内，不同 uv 对应的实际扩散颜色值
-    vec4 diffusionColor = centerColor * a;
+    // 计算出圆范围内，不同 uv 对应的实际颜色值
+    vec4 lightColor = centerColor * a;
 
-    // 混合颜色：在原始图像颜色上叠加扩散颜色
-    return textureColor * textureColor.a + diffusionColor;
+    // 混合颜色：在原始图像颜色上叠加圆颜色
+    return textureColor * textureColor.a + lightColor;
   }
   #endif
 
diff --git a/assets/effects/sprite-point-light.effect.meta b/assets/effects/sprite-point-light.effect.meta
index 8319c0c..704e51e 100644
--- a/assets/effects/sprite-point-light.effect.meta
+++ b/assets/effects/sprite-point-light.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;\nuniform bool cropAlpha;\nuniform bool enableFog;\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addLightColor(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  if (!enableFog) {\n    a *= step(dis, radius);\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 = addLightColor(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;\nuniform bool enableFog;\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addLightColor(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  if (!enableFog) {\n    a *= step(dis, radius);\n  }\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 lightColor = centerColor * a;\n\n  return textureColor * textureColor.a + lightColor;\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 = addLightColor(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  bool cropAlpha;\n\n  bool enableFog;\n}\n\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addLightColor(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  if (!enableFog) {\n    a *= step(dis, radius);\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 = addLightColor(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  bool enableFog;\n}\n\n/**\n * 添加某个扩散点后混合后的纹理颜色\n */\nvec4 addLightColor(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  if (!enableFog) {\n    a *= step(dis, radius);\n  }\n\n  a *= 1.0 - (dis / radius);\n\n  vec4 lightColor = centerColor * a;\n\n  return textureColor * textureColor.a + lightColor;\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 = addLightColor(gl_FragColor, centerPoint, radius, centerColor);\n  #endif\n}\n"
       }
     }
   ],