颜色值传参实现无视uv合批变化的sdf圆形裁切

assets/resources/effects/color_sdf2d_circle.effect

@@ -0,0 +1,94 @@
+// 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 }
+}%
+
+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>
+  #include "../chunks/sdf2d"
+  in vec4 color;
+
+  #if USE_TEXTURE
+    in vec2 uv0;
+    #pragma builtin(local)
+    layout(set = 2, binding = 12) uniform sampler2D cc_spriteTexture;
+  #endif
+
+  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
+
+    vec2 uv = (uv0 - color.xy) / color.zw;
+    float d = sdCircle(uv - 0.5, 0.5);
+    float c = smoothstep(0.01, -0.01, d);
+    o.a *= c;
+    ALPHA_TEST(o);
+    return o;
+  }
+}%

assets/resources/effects/color_sdf2d_circle.effect.meta

@@ -0,0 +1,11 @@
+{
+  "ver": "1.7.1",
+  "importer": "effect",
+  "imported": true,
+  "uuid": "53b86133-01bd-45ed-8cf8-94234cba4494",
+  "files": [
+    ".json"
+  ],
+  "subMetas": {},
+  "userData": {}
+}