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121 lines
3.6 KiB
121 lines
3.6 KiB
/**
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* @author alteredq / http://alteredqualia.com/
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*/
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THREE.BloomPass = function ( strength, kernelSize, sigma, resolution ) {
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THREE.Pass.call( this );
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strength = ( strength !== undefined ) ? strength : 1;
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kernelSize = ( kernelSize !== undefined ) ? kernelSize : 25;
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sigma = ( sigma !== undefined ) ? sigma : 4.0;
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resolution = ( resolution !== undefined ) ? resolution : 256;
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// render targets
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var pars = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter, format: THREE.RGBAFormat };
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this.renderTargetX = new THREE.WebGLRenderTarget( resolution, resolution, pars );
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this.renderTargetX.texture.name = "BloomPass.x";
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this.renderTargetY = new THREE.WebGLRenderTarget( resolution, resolution, pars );
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this.renderTargetY.texture.name = "BloomPass.y";
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// copy material
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if ( THREE.CopyShader === undefined )
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console.error( "THREE.BloomPass relies on THREE.CopyShader" );
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var copyShader = THREE.CopyShader;
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this.copyUniforms = THREE.UniformsUtils.clone( copyShader.uniforms );
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this.copyUniforms[ "opacity" ].value = strength;
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this.materialCopy = new THREE.ShaderMaterial( {
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uniforms: this.copyUniforms,
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vertexShader: copyShader.vertexShader,
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fragmentShader: copyShader.fragmentShader,
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blending: THREE.AdditiveBlending,
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transparent: true
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} );
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// convolution material
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if ( THREE.ConvolutionShader === undefined )
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console.error( "THREE.BloomPass relies on THREE.ConvolutionShader" );
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var convolutionShader = THREE.ConvolutionShader;
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this.convolutionUniforms = THREE.UniformsUtils.clone( convolutionShader.uniforms );
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this.convolutionUniforms[ "uImageIncrement" ].value = THREE.BloomPass.blurX;
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this.convolutionUniforms[ "cKernel" ].value = THREE.ConvolutionShader.buildKernel( sigma );
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this.materialConvolution = new THREE.ShaderMaterial( {
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uniforms: this.convolutionUniforms,
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vertexShader: convolutionShader.vertexShader,
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fragmentShader: convolutionShader.fragmentShader,
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defines: {
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"KERNEL_SIZE_FLOAT": kernelSize.toFixed( 1 ),
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"KERNEL_SIZE_INT": kernelSize.toFixed( 0 )
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}
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} );
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this.needsSwap = false;
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this.fsQuad = new THREE.Pass.FullScreenQuad( null );
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};
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THREE.BloomPass.prototype = Object.assign( Object.create( THREE.Pass.prototype ), {
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constructor: THREE.BloomPass,
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render: function ( renderer, writeBuffer, readBuffer, deltaTime, maskActive ) {
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if ( maskActive ) renderer.context.disable( renderer.context.STENCIL_TEST );
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// Render quad with blured scene into texture (convolution pass 1)
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this.fsQuad.material = this.materialConvolution;
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this.convolutionUniforms[ "tDiffuse" ].value = readBuffer.texture;
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this.convolutionUniforms[ "uImageIncrement" ].value = THREE.BloomPass.blurX;
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renderer.setRenderTarget( this.renderTargetX );
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renderer.clear();
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this.fsQuad.render( renderer );
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// Render quad with blured scene into texture (convolution pass 2)
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this.convolutionUniforms[ "tDiffuse" ].value = this.renderTargetX.texture;
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this.convolutionUniforms[ "uImageIncrement" ].value = THREE.BloomPass.blurY;
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renderer.setRenderTarget( this.renderTargetY );
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renderer.clear();
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this.fsQuad.render( renderer );
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// Render original scene with superimposed blur to texture
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this.fsQuad.material = this.materialCopy;
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this.copyUniforms[ "tDiffuse" ].value = this.renderTargetY.texture;
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if ( maskActive ) renderer.context.enable( renderer.context.STENCIL_TEST );
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renderer.setRenderTarget( readBuffer );
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if ( this.clear ) renderer.clear();
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this.fsQuad.render( renderer );
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}
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} );
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THREE.BloomPass.blurX = new THREE.Vector2( 0.001953125, 0.0 );
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THREE.BloomPass.blurY = new THREE.Vector2( 0.0, 0.001953125 );
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