cocos-creator-template/assets/effects/internal/editor/grid-2d.effect

// Copyright (c) 2017-2020 Xiamen Yaji Software Co., Ltd.
CCEffect %{
  editor:
    hide: true
  techniques:
  - passes:
    - vert: grid-vs:vert
      frag: grid-fs:frag
      priority: max - 11
      depthStencilState:
        depthTest: true
        depthWrite: false
      blendState:
        targets:
        - blend: true
          blendSrc: src_alpha
          blendDst: one_minus_src_alpha
          blendDstAlpha: one_minus_src_alpha
}%

CCProgram grid-vs %{
  precision mediump float;
  #include <builtin/uniforms/cc-local>
  #include <builtin/uniforms/cc-global>
  in vec2 a_position;

  in vec4 a_color;
  out vec4 color;

  vec4 vert () {
    vec4 pos = vec4(a_position, 0, 1);

    pos = cc_matViewProj * cc_matWorld * pos;
    color = a_color;

    return pos;
  }
}%

CCProgram grid-fs %{
  precision mediump float;
  in vec4 color;
  #include <legacy/output>

  vec4 frag () {
    vec4 o = vec4(1, 1, 1, 1);
    o *= color;
    return CCFragOutput(o);
  }
}%