webglFramework/Thirdparty/three.js-master/examples/js/postprocessing/ClearPass.js

   1 /**
   2  * @author mrdoob / http://mrdoob.com/
   3  */
   4
   5 THREE.ClearPass = function ( clearColor, clearAlpha ) {
   6
   7         THREE.Pass.call( this );
   8
   9         this.needsSwap = false;
  10
  11         this.clearColor = ( clearColor !== undefined ) ? clearColor : 0x000000;
  12         this.clearAlpha = ( clearAlpha !== undefined ) ? clearAlpha : 0;
  13
  14 };
  15
  16 THREE.ClearPass.prototype = Object.assign( Object.create( THREE.Pass.prototype ), {
  17
  18         constructor: THREE.ClearPass,
  19
  20         render: function ( renderer, writeBuffer, readBuffer, delta, maskActive ) {
  21
  22                 var oldClearColor, oldClearAlpha;
  23
  24                 if ( this.clearColor ) {
  25
  26                         oldClearColor = renderer.getClearColor().getHex();
  27                         oldClearAlpha = renderer.getClearAlpha();
  28
  29                         renderer.setClearColor( this.clearColor, this.clearAlpha );
  30
  31                 }
  32
  33                 renderer.setRenderTarget( this.renderToScreen ? null : readBuffer );
  34                 renderer.clear();
  35
  36                 if ( this.clearColor ) {
  37
  38                         renderer.setClearColor( oldClearColor, oldClearAlpha );
  39
  40                 }
  41
  42         }
  43
  44 } );