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import {
ShaderMaterial,
UniformsUtils
} from 'three';
import { Pass, FullScreenQuad } from './Pass.js';
import { HalftoneShader } from '../shaders/HalftoneShader.js';
/**
* RGB Halftone pass for three.js effects composer. Requires HalftoneShader.
*/
class HalftonePass extends Pass {
constructor( width, height, params ) {
super();
this.uniforms = UniformsUtils.clone( HalftoneShader.uniforms );
this.material = new ShaderMaterial( {
uniforms: this.uniforms,
fragmentShader: HalftoneShader.fragmentShader,
vertexShader: HalftoneShader.vertexShader
} );
// set params
this.uniforms.width.value = width;
this.uniforms.height.value = height;
for ( const key in params ) {
if ( params.hasOwnProperty( key ) && this.uniforms.hasOwnProperty( key ) ) {
this.uniforms[ key ].value = params[ key ];
}
}
this.fsQuad = new FullScreenQuad( this.material );
}
render( renderer, writeBuffer, readBuffer/*, deltaTime, maskActive*/ ) {
this.material.uniforms[ 'tDiffuse' ].value = readBuffer.texture;
if ( this.renderToScreen ) {
renderer.setRenderTarget( null );
this.fsQuad.render( renderer );
} else {
renderer.setRenderTarget( writeBuffer );
if ( this.clear ) renderer.clear();
this.fsQuad.render( renderer );
}
}
setSize( width, height ) {
this.uniforms.width.value = width;
this.uniforms.height.value = height;
}
dispose() {
this.material.dispose();
this.fsQuad.dispose();
}
}
export { HalftonePass };
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