初始化灰化效果

assets/effects/sprite-gray.effect

@@ -0,0 +1,122 @@
+// Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.  
+// 老照片特效
+// 原理：
+// r = 0.393 * r + 0.769 * g + 0.189 * b; 
+// g = 0.349 * r + 0.686 * g + 0.168 * b; 
+// b = 0.272 * r + 0.534 * g + 0.131 * b;
+
+CCEffect %{
+  techniques:
+  - passes:
+    - vert: vs
+      frag: fs
+      blendState:
+        targets:
+        - blend: true
+      rasterizerState:
+        cullMode: none
+      properties:
+        texture: { value: white }
+        alphaThreshold: { value: 0.5 }
+        # 老化程度
+        oldLevel: {
+          value: 1.0,
+          inspector: {
+            tooltip: "老化程度",
+            range: [0.0, 1.0]
+          }
+        }
+}%
+
+
+CCProgram vs %{
+  precision highp float;
+
+  #include <cc-global>
+  #include <cc-local>
+
+  in vec3 a_position;
+  in vec4 a_color;
+  out vec4 v_color;
+
+  #if USE_TEXTURE
+  in vec2 a_uv0;
+  out vec2 v_uv0;
+  #endif
+
+  void main () {
+    vec4 pos = vec4(a_position, 1);
+
+    #if CC_USE_MODEL
+    pos = cc_matViewProj * cc_matWorld * pos;
+    #else
+    pos = cc_matViewProj * pos;
+    #endif
+
+    #if USE_TEXTURE
+    v_uv0 = a_uv0;
+    #endif
+
+    v_color = a_color;
+
+    gl_Position = pos;
+  }
+}%
+
+
+CCProgram fs %{
+  precision highp float;
+  
+  #include <alpha-test>
+
+  in vec4 v_color;
+
+  #if USE_TEXTURE
+  in vec2 v_uv0;
+  uniform sampler2D texture;
+  #endif
+
+  #if USE_OLD_PHOTO
+  uniform OldPhoto {
+    // 老化程度
+    float oldLevel;
+  }
+
+  /**
+   * 获取老化颜色
+   * 
+   * @param color 原始颜色 
+   *
+   * @return 老化后的颜色
+   */
+  vec4 getOldPhotoColor(vec4 color) {
+    float r = 0.393 * color.r + 0.769 * color.g + 0.189 * color.b; 
+    float g = 0.349 * color.r + 0.686 * color.g + 0.168 * color.b; 
+    float b = 0.272 * color.r + 0.534 * color.g + 0.131 * color.b;
+    return vec4(r, g, b, color.a);
+  }
+  #endif
+
+  void main () {
+    vec4 o = vec4(1, 1, 1, 1);
+
+    #if USE_TEXTURE
+    o *= texture(texture, v_uv0);
+      #if CC_USE_ALPHA_ATLAS_TEXTURE
+      o.a *= texture2D(texture, v_uv0 + vec2(0, 0.5)).r;
+      #endif
+    #endif
+
+    o *= v_color;
+
+    ALPHA_TEST(o);
+
+    #if USE_OLD_PHOTO
+    vec4 srcColor = o;
+    vec4 oldColor = getOldPhotoColor(srcColor);
+
+    o = srcColor + (oldColor - srcColor) * oldLevel;
+    #endif
+    gl_FragColor = o;
+  }
+}%

assets/effects/sprite-gray.effect.meta

@@ -0,0 +1,17 @@
+{
+  "ver": "1.0.23",
+  "uuid": "2e5b29d9-dd5e-4f3d-92e9-e580745b3bc8",
+  "compiledShaders": [
+    {
+      "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 USE_OLD_PHOTO\nuniform float oldLevel;\n/**\n * 获取老化颜色\n * \n * @param color 原始颜色 \n *\n * @return 老化后的颜色\n */\nvec4 getOldPhotoColor(vec4 color) {\n  float r = 0.393 * color.r + 0.769 * color.g + 0.189 * color.b; \n  float g = 0.349 * color.r + 0.686 * color.g + 0.168 * color.b; \n  float b = 0.272 * color.r + 0.534 * color.g + 0.131 * color.b;\n  return vec4(r, g, b, color.a);\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  #if USE_OLD_PHOTO\n  vec4 srcColor = o;\n  vec4 oldColor = getOldPhotoColor(srcColor);\n\n  o = srcColor + (oldColor - srcColor) * oldLevel;\n  #endif\n  gl_FragColor = o;\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 USE_OLD_PHOTO\nuniform OldPhoto {\n\n  float oldLevel;\n}\n\n/**\n * 获取老化颜色\n * \n * @param color 原始颜色 \n *\n * @return 老化后的颜色\n */\nvec4 getOldPhotoColor(vec4 color) {\n  float r = 0.393 * color.r + 0.769 * color.g + 0.189 * color.b; \n  float g = 0.349 * color.r + 0.686 * color.g + 0.168 * color.b; \n  float b = 0.272 * color.r + 0.534 * color.g + 0.131 * color.b;\n  return vec4(r, g, b, color.a);\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  #if USE_OLD_PHOTO\n  vec4 srcColor = o;\n  vec4 oldColor = getOldPhotoColor(srcColor);\n\n  o = srcColor + (oldColor - srcColor) * oldLevel;\n  #endif\n  gl_FragColor = o;\n}\n"
+      }
+    }
+  ],
+  "subMetas": {}
+}

assets/materials/sprite-gray.mtl

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+{
+  "__type__": "cc.Material",
+  "_name": "",
+  "_objFlags": 0,
+  "_native": "",
+  "_effectAsset": {
+    "__uuid__": "2e5b29d9-dd5e-4f3d-92e9-e580745b3bc8"
+  },
+  "_defines": {
+    "USE_TEXTURE": true,
+    "USE_OLD_PHOTO": true
+  },
+  "_props": {}
+}

assets/materials/sprite-gray.mtl.meta

@@ -0,0 +1,6 @@
+{
+  "ver": "1.0.2",
+  "uuid": "ee9df2cd-dc1c-4fa7-9ef6-b253eee81746",
+  "dataAsSubAsset": null,
+  "subMetas": {}
+}

assets/scenes/GrayEffectScene.fire.meta

@@ -0,0 +1,7 @@
+{
+  "ver": "1.2.5",
+  "uuid": "46f3cebd-8cc8-462a-885d-9a2984712368",
+  "asyncLoadAssets": false,
+  "autoReleaseAssets": false,
+  "subMetas": {}
+}

assets/scripts/GrayEffectScene.ts

@@ -0,0 +1,59 @@
+const { ccclass, property } = cc._decorator;
+
+@ccclass
+export default class GrayEffectScene extends cc.Component {
+    private _grayLevelSlider: cc.Slider = null;
+    private _grayLevelSliderLabel: cc.Label = null;
+
+    private _examplesParentNode: cc.Node = null;
+
+    onLoad() {
+        this._grayLevelSlider = cc.find("Canvas/Content/Sliders/GrayLevelSlider/Slider").getComponent(cc.Slider);
+        this._grayLevelSliderLabel = cc.find("Canvas/Content/Sliders/GrayLevelSlider/ValueLabel").getComponent(cc.Label);
+
+        this._examplesParentNode = cc.find("Canvas/Content/Examples");
+    }
+
+    onEnable() {
+        this._grayLevelSlider.node.on("slide", this._onSliderChanged, this);
+    }
+
+    onDisable() {
+        this._grayLevelSlider.node.off("slide", this._onSliderChanged, this);
+    }
+
+    start() {
+        this._onSliderChanged();
+    }
+
+    private _onSliderChanged() {
+        this._grayLevelSliderLabel.string = `${this._grayLevelSlider.progress.toFixed(2)}`;
+
+        // 更新材质
+        this._updateRenderComponentMaterial({
+            oldLevel: this._grayLevelSlider.progress
+        });
+    }
+
+    /**
+     * 更新渲染组件的材质
+     *
+     * 1. 获取材质
+     * 2. 给材质的 unitform 变量赋值
+     * 3. 重新将材质赋值回去
+     */
+    private _updateRenderComponentMaterial(param: {
+        /**
+         * 灰化程度 [0.0, 1.0] ，1.0 表示完全灰化
+         */
+        oldLevel: number;
+    }) {
+        this._examplesParentNode.children.forEach(childNode => {
+            childNode.getComponents(cc.RenderComponent).forEach(renderComponent => {
+                let material: cc.Material = renderComponent.getMaterial(0);
+                material.setProperty("oldLevel", param.oldLevel);
+                renderComponent.setMaterial(0, material);
+            });
+        });
+    }
+}

assets/scripts/GrayEffectScene.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "1.0.5",
+  "uuid": "0b2ee60e-d226-44af-bfcf-95b75266e51f",
+  "isPlugin": false,
+  "loadPluginInWeb": true,
+  "loadPluginInNative": true,
+  "loadPluginInEditor": false,
+  "subMetas": {}
+}