Duffer Derek
import TempNode from '../core/TempNode.js';
import { default as TextureNode/*, texture*/ } from '../accessors/TextureNode.js';
import { NodeUpdateType } from '../core/constants.js';
import { nodeObject } from '../tsl/TSLBase.js';
import { uniform } from '../core/UniformNode.js';
import { viewZToOrthographicDepth, perspectiveDepthToViewZ } from './ViewportDepthNode.js';
import { HalfFloatType/*, FloatType*/ } from '../../constants.js';
import { Vector2 } from '../../math/Vector2.js';
import { DepthTexture } from '../../textures/DepthTexture.js';
import { RenderTarget } from '../../core/RenderTarget.js';
const _size = /*@__PURE__*/ new Vector2();
/**
* Represents the texture of a pass node.
*
* @augments TextureNode
*/
class PassTextureNode extends TextureNode {
static get type() {
return 'PassTextureNode';
}
/**
* Constructs a new pass texture node.
*
* @param {PassNode} passNode - The pass node.
* @param {Texture} texture - The output texture.
*/
constructor( passNode, texture ) {
super( texture );
/**
* A reference to the pass node.
*
* @type {PassNode}
*/
this.passNode = passNode;
this.setUpdateMatrix( false );
}
setup( builder ) {
if ( builder.object.isQuadMesh ) this.passNode.build( builder );
return super.setup( builder );
}
clone() {
return new this.constructor( this.passNode, this.value );
}
}
/**
* An extension of `PassTextureNode` which allows to manage more than one
* internal texture. Relevant for the `getPreviousTexture()` related API.
*
* @augments PassTextureNode
*/
class PassMultipleTextureNode extends PassTextureNode {
static get type() {
return 'PassMultipleTextureNode';
}
/**
* Constructs a new pass texture node.
*
* @param {PassNode} passNode - The pass node.
* @param {string} textureName - The output texture name.
* @param {boolean} [previousTexture=false] - Whether previous frame data should be used or not.
*/
constructor( passNode, textureName, previousTexture = false ) {
// null is passed to the super call since this class does not
// use an external texture for rendering pass data into. Instead
// the texture is managed by the pass node itself
super( passNode, null );
/**
* The output texture name.
*
* @type {string}
*/
this.textureName = textureName;
/**
* Whether previous frame data should be used or not.
*
* @type {boolean}
*/
this.previousTexture = previousTexture;
}
/**
* Updates the texture reference of this node.
*/
updateTexture() {
this.value = this.previousTexture ? this.passNode.getPreviousTexture( this.textureName ) : this.passNode.getTexture( this.textureName );
}
setup( builder ) {
this.updateTexture();
return super.setup( builder );
}
clone() {
return new this.constructor( this.passNode, this.textureName, this.previousTexture );
}
}
/**
* Represents a render pass (sometimes called beauty pass) in context of post processing.
* This pass produces a render for the given scene and camera and can provide multiple outputs
* via MRT for further processing.
*
* ```js
* const postProcessing = new PostProcessing( renderer );
*
* const scenePass = pass( scene, camera );
*
* postProcessing.outputNode = scenePass;
* ```
*
* @augments TempNode
*/
class PassNode extends TempNode {
static get type() {
return 'PassNode';
}
/**
* Constructs a new pass node.
*
* @param {('color'|'depth')} scope - The scope of the pass. The scope determines whether the node outputs color or depth.
* @param {Scene} scene - A reference to the scene.
* @param {Camera} camera - A reference to the camera.
* @param {Object} options - Options for the internal render target.
*/
constructor( scope, scene, camera, options = {} ) {
super( 'vec4' );
/**
* The scope of the pass. The scope determines whether the node outputs color or depth.
*
* @type {('color'|'depth')}
*/
this.scope = scope;
/**
* A reference to the scene.
*
* @type {Scene}
*/
this.scene = scene;
/**
* A reference to the camera.
*
* @type {Camera}
*/
this.camera = camera;
/**
* Options for the internal render target.
*
* @type {Object}
*/
this.options = options;
/**
* The pass's pixel ratio. Will be kept automatically kept in sync with the renderer's pixel ratio.
*
* @private
* @type {number}
* @default 1
*/
this._pixelRatio = 1;
/**
* The pass's pixel width. Will be kept automatically kept in sync with the renderer's width.
* @private
* @type {number}
* @default 1
*/
this._width = 1;
/**
* The pass's pixel height. Will be kept automatically kept in sync with the renderer's height.
* @private
* @type {number}
* @default 1
*/
this._height = 1;
const depthTexture = new DepthTexture();
depthTexture.isRenderTargetTexture = true;
//depthTexture.type = FloatType;
depthTexture.name = 'depth';
const renderTarget = new RenderTarget( this._width * this._pixelRatio, this._height * this._pixelRatio, { type: HalfFloatType, ...options, } );
renderTarget.texture.name = 'output';
renderTarget.depthTexture = depthTexture;
/**
* The pass's render target.
*
* @type {RenderTarget}
*/
this.renderTarget = renderTarget;
/**
* A dictionary holding the internal result textures.
*
* @private
* @type {Object<string, Texture>}
*/
this._textures = {
output: renderTarget.texture,
depth: depthTexture
};
/**
* A dictionary holding the internal texture nodes.
*
* @private
* @type {Object<string, TextureNode>}
*/
this._textureNodes = {};
/**
* A dictionary holding the internal depth nodes.
*
* @private
* @type {Object}
*/
this._linearDepthNodes = {};
/**
* A dictionary holding the internal viewZ nodes.
*
* @private
* @type {Object}
*/
this._viewZNodes = {};
/**
* A dictionary holding the texture data of the previous frame.
* Used for computing velocity/motion vectors.
*
* @private
* @type {Object<string, Texture>}
*/
this._previousTextures = {};
/**
* A dictionary holding the texture nodes of the previous frame.
* Used for computing velocity/motion vectors.
*
* @private
* @type {Object<string, TextureNode>}
*/
this._previousTextureNodes = {};
/**
* The `near` property of the camera as a uniform.
*
* @private
* @type {UniformNode}
*/
this._cameraNear = uniform( 0 );
/**
* The `far` property of the camera as a uniform.
*
* @private
* @type {UniformNode}
*/
this._cameraFar = uniform( 0 );
/**
* A MRT node configuring the MRT settings.
*
* @private
* @type {?MRTNode}
* @default null
*/
this._mrt = null;
this._layers = null;
this._resolution = 1;
/**
* This flag can be used for type testing.
*
* @type {boolean}
* @readonly
* @default true
*/
this.isPassNode = true;
/**
* The `updateBeforeType` is set to `NodeUpdateType.FRAME` since the node renders the
* scene once per frame in its {@link PassNode#updateBefore} method.
*
* @type {string}
* @default 'frame'
*/
this.updateBeforeType = NodeUpdateType.FRAME;
}
/**
* Sets the resolution for the pass.
* The resolution is a factor that is multiplied with the renderer's width and height.
*
* @param {number} resolution - The resolution to set. A value of `1` means full resolution.
* @return {PassNode} A reference to this pass.
*/
setResolution( resolution ) {
this._resolution = resolution;
return this;
}
/**
* Gets the current resolution of the pass.
*
* @return {number} The current resolution. A value of `1` means full resolution.
* @default 1
*/
getResolution() {
return this._resolution;
}
setLayers( layers ) {
this._layers = layers;
return this;
}
getLayers() {
return this._layers;
}
/**
* Sets the given MRT node to setup MRT for this pass.
*
* @param {MRTNode} mrt - The MRT object.
* @return {PassNode} A reference to this pass.
*/
setMRT( mrt ) {
this._mrt = mrt;
return this;
}
/**
* Returns the current MRT node.
*
* @return {MRTNode} The current MRT node.
*/
getMRT() {
return this._mrt;
}
/**
* The method is overwritten so it always returns `true`.
*
* @return {boolean} Whether this node is global or not.
*/
isGlobal() {
return true;
}
/**
* Returns the texture for the given output name.
*
* @param {string} name - The output name to get the texture for.
* @return {Texture} The texture.
*/
getTexture( name ) {
let texture = this._textures[ name ];
if ( texture === undefined ) {
const refTexture = this.renderTarget.texture;
texture = refTexture.clone();
texture.name = name;
this._textures[ name ] = texture;
this.renderTarget.textures.push( texture );
}
return texture;
}
/**
* Returns the texture holding the data of the previous frame for the given output name.
*
* @param {string} name - The output name to get the texture for.
* @return {Texture} The texture holding the data of the previous frame.
*/
getPreviousTexture( name ) {
let texture = this._previousTextures[ name ];
if ( texture === undefined ) {
texture = this.getTexture( name ).clone();
this._previousTextures[ name ] = texture;
}
return texture;
}
/**
* Switches current and previous textures for the given output name.
*
* @param {string} name - The output name.
*/
toggleTexture( name ) {
const prevTexture = this._previousTextures[ name ];
if ( prevTexture !== undefined ) {
const texture = this._textures[ name ];
const index = this.renderTarget.textures.indexOf( texture );
this.renderTarget.textures[ index ] = prevTexture;
this._textures[ name ] = prevTexture;
this._previousTextures[ name ] = texture;
this._textureNodes[ name ].updateTexture();
this._previousTextureNodes[ name ].updateTexture();
}
}
/**
* Returns the texture node for the given output name.
*
* @param {string} [name='output'] - The output name to get the texture node for.
* @return {TextureNode} The texture node.
*/
getTextureNode( name = 'output' ) {
let textureNode = this._textureNodes[ name ];
if ( textureNode === undefined ) {
textureNode = nodeObject( new PassMultipleTextureNode( this, name ) );
textureNode.updateTexture();
this._textureNodes[ name ] = textureNode;
}
return textureNode;
}
/**
* Returns the previous texture node for the given output name.
*
* @param {string} [name='output'] - The output name to get the previous texture node for.
* @return {TextureNode} The previous texture node.
*/
getPreviousTextureNode( name = 'output' ) {
let textureNode = this._previousTextureNodes[ name ];
if ( textureNode === undefined ) {
if ( this._textureNodes[ name ] === undefined ) this.getTextureNode( name );
textureNode = nodeObject( new PassMultipleTextureNode( this, name, true ) );
textureNode.updateTexture();
this._previousTextureNodes[ name ] = textureNode;
}
return textureNode;
}
/**
* Returns a viewZ node of this pass.
*
* @param {string} [name='depth'] - The output name to get the viewZ node for. In most cases the default `'depth'` can be used however the parameter exists for custom depth outputs.
* @return {Node} The viewZ node.
*/
getViewZNode( name = 'depth' ) {
let viewZNode = this._viewZNodes[ name ];
if ( viewZNode === undefined ) {
const cameraNear = this._cameraNear;
const cameraFar = this._cameraFar;
this._viewZNodes[ name ] = viewZNode = perspectiveDepthToViewZ( this.getTextureNode( name ), cameraNear, cameraFar );
}
return viewZNode;
}
/**
* Returns a linear depth node of this pass.
*
* @param {string} [name='depth'] - The output name to get the linear depth node for. In most cases the default `'depth'` can be used however the parameter exists for custom depth outputs.
* @return {Node} The linear depth node.
*/
getLinearDepthNode( name = 'depth' ) {
let linearDepthNode = this._linearDepthNodes[ name ];
if ( linearDepthNode === undefined ) {
const cameraNear = this._cameraNear;
const cameraFar = this._cameraFar;
const viewZNode = this.getViewZNode( name );
// TODO: just if ( builder.camera.isPerspectiveCamera )
this._linearDepthNodes[ name ] = linearDepthNode = viewZToOrthographicDepth( viewZNode, cameraNear, cameraFar );
}
return linearDepthNode;
}
setup( { renderer } ) {
this.renderTarget.samples = this.options.samples === undefined ? renderer.samples : this.options.samples;
// TODO: Disable MSAA for WebGL backend for now
if ( renderer.backend.isWebGLBackend === true ) {
this.renderTarget.samples = 0;
}
this.renderTarget.texture.type = renderer.getColorBufferType();
return this.scope === PassNode.COLOR ? this.getTextureNode() : this.getLinearDepthNode();
}
updateBefore( frame ) {
const { renderer } = frame;
const { scene } = this;
let camera;
let pixelRatio;
const outputRenderTarget = renderer.getOutputRenderTarget();
if ( outputRenderTarget && outputRenderTarget.isXRRenderTarget === true ) {
pixelRatio = 1;
camera = renderer.xr.getCamera();
renderer.xr.updateCamera( camera );
_size.set( outputRenderTarget.width, outputRenderTarget.height );
} else {
camera = this.camera;
pixelRatio = renderer.getPixelRatio();
renderer.getSize( _size );
}
this._pixelRatio = pixelRatio;
this.setSize( _size.width, _size.height );
const currentRenderTarget = renderer.getRenderTarget();
const currentMRT = renderer.getMRT();
const currentMask = camera.layers.mask;
this._cameraNear.value = camera.near;
this._cameraFar.value = camera.far;
if ( this._layers !== null ) {
camera.layers.mask = this._layers.mask;
}
for ( const name in this._previousTextures ) {
this.toggleTexture( name );
}
renderer.setRenderTarget( this.renderTarget );
renderer.setMRT( this._mrt );
renderer.render( scene, camera );
renderer.setRenderTarget( currentRenderTarget );
renderer.setMRT( currentMRT );
camera.layers.mask = currentMask;
}
/**
* Sets the size of the pass's render target. Honors the pixel ratio.
*
* @param {number} width - The width to set.
* @param {number} height - The height to set.
*/
setSize( width, height ) {
this._width = width;
this._height = height;
const effectiveWidth = this._width * this._pixelRatio * this._resolution;
const effectiveHeight = this._height * this._pixelRatio * this._resolution;
this.renderTarget.setSize( effectiveWidth, effectiveHeight );
}
/**
* Sets the pixel ratio the pass's render target and updates the size.
*
* @param {number} pixelRatio - The pixel ratio to set.
*/
setPixelRatio( pixelRatio ) {
this._pixelRatio = pixelRatio;
this.setSize( this._width, this._height );
}
/**
* Frees internal resources. Should be called when the node is no longer in use.
*/
dispose() {
this.renderTarget.dispose();
}
}
/**
* @static
* @type {'color'}
* @default 'color'
*/
PassNode.COLOR = 'color';
/**
* @static
* @type {'depth'}
* @default 'depth'
*/
PassNode.DEPTH = 'depth';
export default PassNode;
/**
* TSL function for creating a pass node.
*
* @tsl
* @function
* @param {Scene} scene - A reference to the scene.
* @param {Camera} camera - A reference to the camera.
* @param {Object} options - Options for the internal render target.
* @returns {PassNode}
*/
export const pass = ( scene, camera, options ) => nodeObject( new PassNode( PassNode.COLOR, scene, camera, options ) );
/**
* TSL function for creating a pass texture node.
*
* @tsl
* @function
* @param {PassNode} pass - The pass node.
* @param {Texture} texture - The output texture.
* @returns {PassTextureNode}
*/
export const passTexture = ( pass, texture ) => nodeObject( new PassTextureNode( pass, texture ) );
/**
* TSL function for creating a depth pass node.
*
* @tsl
* @function
* @param {Scene} scene - A reference to the scene.
* @param {Camera} camera - A reference to the camera.
* @param {Object} options - Options for the internal render target.
* @returns {PassNode}
*/
export const depthPass = ( scene, camera, options ) => nodeObject( new PassNode( PassNode.DEPTH, scene, camera, options ) );
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