// Copyright (c) 2017-2020 Xiamen Yaji Software Co., Ltd.
CCEffect %{
  techniques:
  - passes:
    - vert: hbao-vs
      frag: hbao-fs
      pass: hbao-pass
      depthStencilState:
        depthTest: false
        depthWrite: false
      rasterizerState:
        cullMode: none
    - vert: hbao-vs
      frag: blurx-fs
      pass: blurx-pass
      depthStencilState:
        depthTest: false
        depthWrite: false
      rasterizerState:
        cullMode: none
    - vert: hbao-vs
      frag: blury-fs
      pass: blury-pass
      depthStencilState:
        depthTest: false
        depthWrite: false
      rasterizerState:
        cullMode: none
    - vert: hbao-vs
      frag: combine-fs
      pass: combine-pass
      depthStencilState:
        depthTest: false
        depthWrite: false
      rasterizerState:
        cullMode: none
      blendState:
        targets:
        - blend: true
          blendSrc: zero
          blendDst: src_alpha
          blendSrcAlpha: zero
          blendDstAlpha: one
}%

CCProgram hbao-vs %{
  #include <./chunks/vs>
}%

CCProgram hbao-fs %{
  precision highp float;
  #include <chunks/hbao>
  #include <common/common-define>

  in vec2 v_uv;

  layout(location = 0) out vec4 fragColor;

  void main () {
    float ao = CalculateAO(v_uv);
  	fragColor = vec4(ao, ao, ao, 1.0);
  }
}%

CCProgram blurx-fs %{
  precision highp float;
  #include <chunks/hbao>
  #include <common/common-define>

  in vec2 v_uv;

  layout(location = 0) out vec4 fragColor;

  void main () {
    float ao = BlurCore(v_uv, vec2(1.0, 0.0));
  	fragColor = vec4(ao, ao, ao, 1.0);
  }
}%

CCProgram blury-fs %{
  precision highp float;
  #include <chunks/hbao>
  #include <common/common-define>

  in vec2 v_uv;

  layout(location = 0) out vec4 fragColor;

  void main () {
    float ao = BlurCore(v_uv, vec2(0.0, 1.0));
  	fragColor = vec4(ao, ao, ao, 1.0);
  }
}%

CCProgram combine-fs %{
  precision highp float;
  #include <chunks/hbao>
  #include <common/common-define>

  in vec2 v_uv;

  layout(location = 0) out vec4 fragColor;

  void main () {
    float ao = Combine(v_uv);
  	fragColor = vec4(1.0, 1.0, 1.0, ao);
  }
}%