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189 lines
3.6 KiB
189 lines
3.6 KiB
/**
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* @author alteredq / http://alteredqualia.com/
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*/
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THREE.EffectComposer = function ( renderer, renderTarget ) {
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this.renderer = renderer;
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if ( renderTarget === undefined ) {
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var parameters = {
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minFilter: THREE.LinearFilter,
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magFilter: THREE.LinearFilter,
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format: THREE.RGBAFormat,
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stencilBuffer: false
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};
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var size = renderer.getDrawingBufferSize();
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renderTarget = new THREE.WebGLRenderTarget( size.width, size.height, parameters );
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renderTarget.texture.name = 'EffectComposer.rt1';
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}
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this.renderTarget1 = renderTarget;
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this.renderTarget2 = renderTarget.clone();
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this.renderTarget2.texture.name = 'EffectComposer.rt2';
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this.writeBuffer = this.renderTarget1;
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this.readBuffer = this.renderTarget2;
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this.passes = [];
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// dependencies
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if ( THREE.CopyShader === undefined ) {
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console.error( 'THREE.EffectComposer relies on THREE.CopyShader' );
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}
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if ( THREE.ShaderPass === undefined ) {
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console.error( 'THREE.EffectComposer relies on THREE.ShaderPass' );
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}
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this.copyPass = new THREE.ShaderPass( THREE.CopyShader );
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};
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Object.assign( THREE.EffectComposer.prototype, {
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swapBuffers: function () {
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var tmp = this.readBuffer;
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this.readBuffer = this.writeBuffer;
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this.writeBuffer = tmp;
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},
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addPass: function ( pass ) {
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this.passes.push( pass );
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var size = this.renderer.getDrawingBufferSize();
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pass.setSize( size.width, size.height );
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},
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insertPass: function ( pass, index ) {
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this.passes.splice( index, 0, pass );
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},
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render: function ( delta ) {
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var maskActive = false;
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var pass, i, il = this.passes.length;
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for ( i = 0; i < il; i ++ ) {
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pass = this.passes[ i ];
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if ( pass.enabled === false ) continue;
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pass.render( this.renderer, this.writeBuffer, this.readBuffer, delta, maskActive );
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if ( pass.needsSwap ) {
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if ( maskActive ) {
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var context = this.renderer.context;
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context.stencilFunc( context.NOTEQUAL, 1, 0xffffffff );
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this.copyPass.render( this.renderer, this.writeBuffer, this.readBuffer, delta );
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context.stencilFunc( context.EQUAL, 1, 0xffffffff );
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}
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this.swapBuffers();
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}
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if ( THREE.MaskPass !== undefined ) {
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if ( pass instanceof THREE.MaskPass ) {
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maskActive = true;
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} else if ( pass instanceof THREE.ClearMaskPass ) {
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maskActive = false;
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}
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}
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}
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},
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reset: function ( renderTarget ) {
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if ( renderTarget === undefined ) {
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var size = this.renderer.getDrawingBufferSize();
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renderTarget = this.renderTarget1.clone();
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renderTarget.setSize( size.width, size.height );
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}
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this.renderTarget1.dispose();
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this.renderTarget2.dispose();
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this.renderTarget1 = renderTarget;
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this.renderTarget2 = renderTarget.clone();
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this.writeBuffer = this.renderTarget1;
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this.readBuffer = this.renderTarget2;
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},
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setSize: function ( width, height ) {
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this.renderTarget1.setSize( width, height );
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this.renderTarget2.setSize( width, height );
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for ( var i = 0; i < this.passes.length; i ++ ) {
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this.passes[ i ].setSize( width, height );
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}
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}
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} );
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THREE.Pass = function () {
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// if set to true, the pass is processed by the composer
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this.enabled = true;
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// if set to true, the pass indicates to swap read and write buffer after rendering
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this.needsSwap = true;
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// if set to true, the pass clears its buffer before rendering
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this.clear = false;
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// if set to true, the result of the pass is rendered to screen
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this.renderToScreen = false;
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};
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Object.assign( THREE.Pass.prototype, {
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setSize: function ( width, height ) {},
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render: function ( renderer, writeBuffer, readBuffer, delta, maskActive ) {
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console.error( 'THREE.Pass: .render() must be implemented in derived pass.' );
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}
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} );
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