three
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JavaScript 3D library
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JavaScript
import ViewportTextureNode from './ViewportTextureNode.js';
import { nodeProxy } from '../tsl/TSLBase.js';
import { screenUV } from './ScreenNode.js';
import { DepthTexture } from '../../textures/DepthTexture.js';
let _sharedDepthbuffer = null;
/**
* Represents the depth of the current viewport as a texture. This module
* can be used in combination with viewport texture to achieve effects
* that require depth evaluation.
*
* @augments ViewportTextureNode
*/
class ViewportDepthTextureNode extends ViewportTextureNode {
static get type() {
return 'ViewportDepthTextureNode';
}
/**
* Constructs a new viewport depth texture node.
*
* @param {Node} [uvNode=screenUV] - The uv node.
* @param {?Node} [levelNode=null] - The level node.
* @param {?DepthTexture} [depthTexture=null] - A depth texture. If not provided, uses a shared depth texture.
*/
constructor( uvNode = screenUV, levelNode = null, depthTexture = null ) {
if ( depthTexture === null ) {
if ( _sharedDepthbuffer === null ) {
_sharedDepthbuffer = new DepthTexture();
}
depthTexture = _sharedDepthbuffer;
}
super( uvNode, levelNode, depthTexture );
}
}
export default ViewportDepthTextureNode;
/**
* TSL function for a viewport depth texture node.
*
* @tsl
* @function
* @param {?Node} [uvNode=screenUV] - The uv node.
* @param {?Node} [levelNode=null] - The level node.
* @param {?DepthTexture} [depthTexture=null] - A depth texture. If not provided, a depth texture is created automatically.
* @returns {ViewportDepthTextureNode}
*/
export const viewportDepthTexture = /*@__PURE__*/ nodeProxy( ViewportDepthTextureNode ).setParameterLength( 0, 3 );