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assets/resources/game/05-outline-glow/shaders/builtin-sprite-outline-glow2.effect

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+// Copyright (c) 2017-2020 Xiamen Yaji Software Co., Ltd.
+CCEffect %{
+  techniques:
+  - passes:
+    - vert: sprite-vs:vert
+      frag: sprite-fs:frag
+      depthStencilState:
+        depthTest: false
+        depthWrite: false
+      blendState:
+        targets:
+        - blend: true
+          blendSrc: src_alpha
+          blendDst: one_minus_src_alpha
+          blendDstAlpha: one_minus_src_alpha
+      rasterizerState:
+        cullMode: none
+      properties:
+        alphaThreshold: { value: 0.5 }
+
+        glowColor:      { value: [1, 1, 1, 1], editor: { type: color } }
+        glowWidth:      { value: 0.05, editor: { slide: true, range: [0, 0.3], step: 0.001 } }
+        glowThreshold:  { value: 1, editor: { slide: true, range: [0, 1], step: 0.001 } }
+}%
+
+CCProgram sprite-vs %{
+  precision highp float;
+  #include <builtin/uniforms/cc-global>
+  #if USE_LOCAL
+    #include <builtin/uniforms/cc-local>
+  #endif
+  #if SAMPLE_FROM_RT
+    #include <common/common-define>
+  #endif
+  in vec3 a_position;
+  in vec2 a_texCoord;
+  in vec4 a_color;
+
+  out vec4 color;
+  out vec2 uv0;
+
+  vec4 vert () {
+    vec4 pos = vec4(a_position, 1);
+
+    #if USE_LOCAL
+      pos = cc_matWorld * pos;
+    #endif
+
+    #if USE_PIXEL_ALIGNMENT
+      pos = cc_matView * pos;
+      pos.xyz = floor(pos.xyz);
+      pos = cc_matProj * pos;
+    #else
+      pos = cc_matViewProj * pos;
+    #endif
+
+    uv0 = a_texCoord;
+    #if SAMPLE_FROM_RT
+      CC_HANDLE_RT_SAMPLE_FLIP(uv0);
+    #endif
+    color = a_color;
+
+    return pos;
+  }
+}%
+
+CCProgram sprite-fs %{
+  precision highp float;
+  #include <builtin/internal/embedded-alpha>
+  #include <builtin/internal/alpha-test>
+
+  in vec4 color;
+
+  uniform FSConstants {
+    vec4 glowColor;
+    float glowWidth;
+    float glowThreshold;
+  };
+
+  #if USE_TEXTURE
+    in vec2 uv0;
+    #pragma builtin(local)
+    layout(set = 2, binding = 12) uniform sampler2D cc_spriteTexture;
+  #endif
+
+  vec4 getTextureColor (sampler2D mainTexture, vec2 uv) {
+    if (uv.x > 1.0 || uv.x < 0.0 || uv.y > 1.0 || uv.y < 0.0) {
+      return vec4(0.0, 0.0, 0.0, 0.0);
+    }
+    return texture(mainTexture, uv);
+  }
+
+  float getColorAlpha (float angle, float dist) {
+    // 角度转弧度，公式为：弧度 = 角度 * (pi / 180)
+    float radian = angle * 3.14 / 180.0;
+    vec2 newUV = uv0 + vec2(dist * cos(radian), dist * sin(radian));
+    vec4 color = getTextureColor(cc_spriteTexture, newUV);
+    return color.a;
+  }
+
+  float getAverageAlpha (float dist) {
+    float totalAlpha = 0.0;
+
+    totalAlpha += getColorAlpha(0.0, dist);
+    totalAlpha += getColorAlpha(30.0, dist);
+    totalAlpha += getColorAlpha(60.0, dist);
+    totalAlpha += getColorAlpha(90.0, dist);
+    totalAlpha += getColorAlpha(120.0, dist);
+    totalAlpha += getColorAlpha(150.0, dist);
+    totalAlpha += getColorAlpha(180.0, dist);
+    totalAlpha += getColorAlpha(210.0, dist);
+    totalAlpha += getColorAlpha(240.0, dist);
+    totalAlpha += getColorAlpha(270.0, dist);
+    totalAlpha += getColorAlpha(300.0, dist);
+    totalAlpha += getColorAlpha(330.0, dist);
+
+    return totalAlpha * 0.0833;
+  }
+
+  float getGlowAlpha () {
+    if (glowWidth == 0.0 ) {
+      return 0.0;
+    }
+
+    float totalAlpha = 0.0;
+    totalAlpha += getAverageAlpha(glowWidth * 0.1);
+    totalAlpha += getAverageAlpha(glowWidth * 0.2);
+    totalAlpha += getAverageAlpha(glowWidth * 0.3);
+    totalAlpha += getAverageAlpha(glowWidth * 0.4);
+    totalAlpha += getAverageAlpha(glowWidth * 0.5);
+    totalAlpha += getAverageAlpha(glowWidth * 0.6);
+    totalAlpha += getAverageAlpha(glowWidth * 0.7);
+    totalAlpha += getAverageAlpha(glowWidth * 0.8);
+    totalAlpha += getAverageAlpha(glowWidth * 0.9);
+    totalAlpha += getAverageAlpha(glowWidth * 1.0);
+
+    return totalAlpha * 0.1;
+  }
+
+  vec4 frag () {
+    vec4 o = vec4(1, 1, 1, 1);
+
+    #if USE_TEXTURE
+      o *= CCSampleWithAlphaSeparated(cc_spriteTexture, uv0);
+      #if IS_GRAY
+        float gray  = 0.2126 * o.r + 0.7152 * o.g + 0.0722 * o.b;
+        o.r = o.g = o.b = gray;
+      #endif
+    #endif
+
+    float alpha = getGlowAlpha();
+
+    if (alpha <= glowThreshold) {
+      alpha /= glowThreshold;
+      alpha = -1.0 * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) * (alpha - 1.0) + 1.0;        
+    } else {
+      alpha = 0.0;
+    }
+
+    vec4 dstColor = glowColor * alpha;
+    vec4 scrColor = o;
+
+    o = scrColor * scrColor.a + dstColor * (1.0 - scrColor.a);
+
+    o *= color;
+    ALPHA_TEST(o);
+    return o;
+  }
+}%

assets/resources/game/05-outline-glow/shaders/builtin-sprite-outline-glow2.effect.meta

@@ -0,0 +1 @@
+{"ver":"1.7.1","importer":"effect","imported":true,"uuid":"40c25c17-db22-4ae7-8d3a-f73cbb6d36ba","files":[".json"],"subMetas":{},"userData":{"combinations":[{}]}}