three
Version:
JavaScript 3D library
142 lines (80 loc) • 2.91 kB
JavaScript
import { nodeObject } from '../tsl/TSLCore.js';
import TextureNode from '../accessors/TextureNode.js';
import { NodeUpdateType } from '../core/constants.js';
import { uv } from '../accessors/UV.js';
import NodeMaterial from '../../materials/nodes/NodeMaterial.js';
import QuadMesh from '../../renderers/common/QuadMesh.js';
import { RenderTarget } from '../../core/RenderTarget.js';
import { Vector2 } from '../../math/Vector2.js';
import { HalfFloatType } from '../../constants.js';
const _size = /*@__PURE__*/ new Vector2();
class RTTNode extends TextureNode {
static get type() {
return 'RTTNode';
}
constructor( node, width = null, height = null, options = { type: HalfFloatType } ) {
const renderTarget = new RenderTarget( width, height, options );
super( renderTarget.texture, uv() );
this.node = node;
this.width = width;
this.height = height;
this.renderTarget = renderTarget;
this.textureNeedsUpdate = true;
this.autoUpdate = true;
this.updateMap = new WeakMap();
this._rttNode = null;
this._quadMesh = new QuadMesh( new NodeMaterial() );
this.updateBeforeType = NodeUpdateType.RENDER;
}
get autoSize() {
return this.width === null;
}
setup( builder ) {
this._rttNode = this.node.context( builder.getSharedContext() );
this._quadMesh.material.name = 'RTT';
this._quadMesh.material.needsUpdate = true;
return super.setup( builder );
}
setSize( width, height ) {
this.width = width;
this.height = height;
const effectiveWidth = width * this.pixelRatio;
const effectiveHeight = height * this.pixelRatio;
this.renderTarget.setSize( effectiveWidth, effectiveHeight );
this.textureNeedsUpdate = true;
}
setPixelRatio( pixelRatio ) {
this.pixelRatio = pixelRatio;
this.setSize( this.width, this.height );
}
updateBefore( { renderer } ) {
if ( this.textureNeedsUpdate === false && this.autoUpdate === false ) return;
this.textureNeedsUpdate = false;
//
if ( this.autoSize === true ) {
this.pixelRatio = renderer.getPixelRatio();
const size = renderer.getSize( _size );
this.setSize( size.width, size.height );
}
//
this._quadMesh.material.fragmentNode = this._rttNode;
//
const currentRenderTarget = renderer.getRenderTarget();
renderer.setRenderTarget( this.renderTarget );
this._quadMesh.render( renderer );
renderer.setRenderTarget( currentRenderTarget );
}
clone() {
const newNode = new TextureNode( this.value, this.uvNode, this.levelNode );
newNode.sampler = this.sampler;
newNode.referenceNode = this;
return newNode;
}
}
export default RTTNode;
export const rtt = ( node, ...params ) => nodeObject( new RTTNode( nodeObject( node ), ...params ) );
export const convertToTexture = ( node, ...params ) => {
if ( node.isTextureNode ) return node;
if ( node.isPassNode ) return node.getTextureNode();
return rtt( node, ...params );
};