(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports", "three", "../shaders/CopyShader.js", "./ShaderPass.js", "./MaskPass.js"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require("three"), require("../shaders/CopyShader.js"), require("./ShaderPass.js"), require("./MaskPass.js"));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.three, global.CopyShader, global.ShaderPass, global.MaskPass);
    global.EffectComposer = mod.exports;
  }
})(typeof globalThis !== "undefined" ? globalThis : typeof self !== "undefined" ? self : this, function (_exports, _three, _CopyShader, _ShaderPass, _MaskPass) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.Pass = _exports.FullScreenQuad = _exports.EffectComposer = void 0;

  function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

  function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

  function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }

  var EffectComposer = /*#__PURE__*/function () {
    function EffectComposer(renderer, renderTarget) {
      _classCallCheck(this, EffectComposer);

      this.renderer = renderer;

      if (renderTarget === undefined) {
        var parameters = {
          minFilter: _three.LinearFilter,
          magFilter: _three.LinearFilter,
          format: _three.RGBAFormat
        };
        var size = renderer.getSize(new _three.Vector2());
        this._pixelRatio = renderer.getPixelRatio();
        this._width = size.width;
        this._height = size.height;
        renderTarget = new _three.WebGLRenderTarget(this._width * this._pixelRatio, this._height * this._pixelRatio, parameters);
        renderTarget.texture.name = 'EffectComposer.rt1';
      } else {
        this._pixelRatio = 1;
        this._width = renderTarget.width;
        this._height = renderTarget.height;
      }

      this.renderTarget1 = renderTarget;
      this.renderTarget2 = renderTarget.clone();
      this.renderTarget2.texture.name = 'EffectComposer.rt2';
      this.writeBuffer = this.renderTarget1;
      this.readBuffer = this.renderTarget2;
      this.renderToScreen = true;
      this.passes = []; // dependencies

      if (_CopyShader.CopyShader === undefined) {
        console.error('THREE.EffectComposer relies on CopyShader');
      }

      if (_ShaderPass.ShaderPass === undefined) {
        console.error('THREE.EffectComposer relies on ShaderPass');
      }

      this.copyPass = new _ShaderPass.ShaderPass(_CopyShader.CopyShader);
      this.clock = new _three.Clock();
    }

    _createClass(EffectComposer, [{
      key: "swapBuffers",
      value: function swapBuffers() {
        var tmp = this.readBuffer;
        this.readBuffer = this.writeBuffer;
        this.writeBuffer = tmp;
      }
    }, {
      key: "addPass",
      value: function addPass(pass) {
        this.passes.push(pass);
        pass.setSize(this._width * this._pixelRatio, this._height * this._pixelRatio);
      }
    }, {
      key: "insertPass",
      value: function insertPass(pass, index) {
        this.passes.splice(index, 0, pass);
        pass.setSize(this._width * this._pixelRatio, this._height * this._pixelRatio);
      }
    }, {
      key: "removePass",
      value: function removePass(pass) {
        var index = this.passes.indexOf(pass);

        if (index !== -1) {
          this.passes.splice(index, 1);
        }
      }
    }, {
      key: "isLastEnabledPass",
      value: function isLastEnabledPass(passIndex) {
        for (var i = passIndex + 1; i < this.passes.length; i++) {
          if (this.passes[i].enabled) {
            return false;
          }
        }

        return true;
      }
    }, {
      key: "render",
      value: function render(deltaTime) {
        // deltaTime value is in seconds
        if (deltaTime === undefined) {
          deltaTime = this.clock.getDelta();
        }

        var currentRenderTarget = this.renderer.getRenderTarget();
        var maskActive = false;

        for (var i = 0, il = this.passes.length; i < il; i++) {
          var pass = this.passes[i];
          if (pass.enabled === false) continue;
          pass.renderToScreen = this.renderToScreen && this.isLastEnabledPass(i);
          pass.render(this.renderer, this.writeBuffer, this.readBuffer, deltaTime, maskActive);

          if (pass.needsSwap) {
            if (maskActive) {
              var context = this.renderer.getContext();
              var stencil = this.renderer.state.buffers.stencil; //context.stencilFunc( context.NOTEQUAL, 1, 0xffffffff );

              stencil.setFunc(context.NOTEQUAL, 1, 0xffffffff);
              this.copyPass.render(this.renderer, this.writeBuffer, this.readBuffer, deltaTime); //context.stencilFunc( context.EQUAL, 1, 0xffffffff );

              stencil.setFunc(context.EQUAL, 1, 0xffffffff);
            }

            this.swapBuffers();
          }

          if (_MaskPass.MaskPass !== undefined) {
            if (pass instanceof _MaskPass.MaskPass) {
              maskActive = true;
            } else if (pass instanceof _MaskPass.ClearMaskPass) {
              maskActive = false;
            }
          }
        }

        this.renderer.setRenderTarget(currentRenderTarget);
      }
    }, {
      key: "reset",
      value: function reset(renderTarget) {
        if (renderTarget === undefined) {
          var size = this.renderer.getSize(new _three.Vector2());
          this._pixelRatio = this.renderer.getPixelRatio();
          this._width = size.width;
          this._height = size.height;
          renderTarget = this.renderTarget1.clone();
          renderTarget.setSize(this._width * this._pixelRatio, this._height * this._pixelRatio);
        }

        this.renderTarget1.dispose();
        this.renderTarget2.dispose();
        this.renderTarget1 = renderTarget;
        this.renderTarget2 = renderTarget.clone();
        this.writeBuffer = this.renderTarget1;
        this.readBuffer = this.renderTarget2;
      }
    }, {
      key: "setSize",
      value: function setSize(width, height) {
        this._width = width;
        this._height = height;
        var effectiveWidth = this._width * this._pixelRatio;
        var effectiveHeight = this._height * this._pixelRatio;
        this.renderTarget1.setSize(effectiveWidth, effectiveHeight);
        this.renderTarget2.setSize(effectiveWidth, effectiveHeight);

        for (var i = 0; i < this.passes.length; i++) {
          this.passes[i].setSize(effectiveWidth, effectiveHeight);
        }
      }
    }, {
      key: "setPixelRatio",
      value: function setPixelRatio(pixelRatio) {
        this._pixelRatio = pixelRatio;
        this.setSize(this._width, this._height);
      }
    }]);

    return EffectComposer;
  }();

  _exports.EffectComposer = EffectComposer;

  var Pass = /*#__PURE__*/function () {
    function Pass() {
      _classCallCheck(this, Pass);

      // if set to true, the pass is processed by the composer
      this.enabled = true; // if set to true, the pass indicates to swap read and write buffer after rendering

      this.needsSwap = true; // if set to true, the pass clears its buffer before rendering

      this.clear = false; // if set to true, the result of the pass is rendered to screen. This is set automatically by EffectComposer.

      this.renderToScreen = false;
    }

    _createClass(Pass, [{
      key: "setSize",
      value: function
        /* width, height */
      setSize() {}
    }, {
      key: "render",
      value: function
        /* renderer, writeBuffer, readBuffer, deltaTime, maskActive */
      render() {
        console.error('THREE.Pass: .render() must be implemented in derived pass.');
      }
    }]);

    return Pass;
  }(); // Helper for passes that need to fill the viewport with a single quad.


  _exports.Pass = Pass;

  var _camera = new _three.OrthographicCamera(-1, 1, 1, -1, 0, 1); // https://github.com/mrdoob/three.js/pull/21358


  var _geometry = new _three.BufferGeometry();

  _geometry.setAttribute('position', new _three.Float32BufferAttribute([-1, 3, 0, -1, -1, 0, 3, -1, 0], 3));

  _geometry.setAttribute('uv', new _three.Float32BufferAttribute([0, 2, 0, 0, 2, 0], 2));

  var FullScreenQuad = /*#__PURE__*/function () {
    function FullScreenQuad(material) {
      _classCallCheck(this, FullScreenQuad);

      this._mesh = new _three.Mesh(_geometry, material);
    }

    _createClass(FullScreenQuad, [{
      key: "dispose",
      value: function dispose() {
        this._mesh.geometry.dispose();
      }
    }, {
      key: "render",
      value: function render(renderer) {
        renderer.render(this._mesh, _camera);
      }
    }, {
      key: "material",
      get: function get() {
        return this._mesh.material;
      },
      set: function set(value) {
        this._mesh.material = value;
      }
    }]);

    return FullScreenQuad;
  }();

  _exports.FullScreenQuad = FullScreenQuad;
});