// Copyright (c) 2017-2020 Xiamen Yaji Software Co., Ltd.

CCEffect %{
  techniques:
  - passes:
    - vert: vs
      frag: fs-tonemap
      pass: cc-tone-mapping
      rasterizerState:
        cullMode: none
      depthStencilState:
        depthTest: false
        depthWrite: false
    - vert: vs
      frag: fs-copy
      pass: cc-tone-mapping
      rasterizerState:
        cullMode: none
      depthStencilState:
        depthTest: false
        depthWrite: false
}%

CCProgram vs %{
  #include <./chunks/vs1>
}%

CCProgram fs-tonemap %{
  precision highp float;
  #include <common/color/gamma>
  #include <common/color/tone-mapping>

  in vec2 v_uv;

  #pragma rate inputTexture pass
  uniform sampler2D inputTexture;

  layout(location = 0) out vec4 fragColor;

  void main () {
    fragColor = texture(inputTexture, v_uv);
    #if CC_USE_FLOAT_OUTPUT
      fragColor.rgb = HDRToLDR(fragColor.rgb);
      fragColor.rgb = LinearToSRGB(fragColor.rgb);
    #endif
  }
}%

CCProgram fs-copy %{
  precision highp float;

  in vec2 v_uv;

  #pragma rate inputTexture pass
  uniform sampler2D inputTexture;

  layout(location = 0) out vec4 fragColor;

  void main () {
    fragColor = texture(inputTexture, v_uv);
  }
}%