cocos-creator-template/assets/effects/internal/builtin-clear-stencil.effect

// 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
      rasterizerState:
        cullMode: none
}%

CCProgram sprite-vs %{
  precision highp float;

  in vec3 a_position;

  vec4 vert () {
    vec4 pos = vec4(a_position, 1);

    return pos;
  }
}%

CCProgram sprite-fs %{
  precision highp float;


  vec4 frag () {
    vec4 o = vec4(1.0);
    return o;
  }
}%