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 { FramebufferTexture } from '../../textures/FramebufferTexture.js';
let _sharedFramebuffer = null;
/**
* `ViewportTextureNode` creates an internal texture for each node instance. This module
* shares a texture across all instances of `ViewportSharedTextureNode`. It should
* be the first choice when using data of the default/screen framebuffer for performance reasons.
*
* @augments ViewportTextureNode
*/
class ViewportSharedTextureNode extends ViewportTextureNode {
static get type() {
return 'ViewportSharedTextureNode';
}
/**
* Constructs a new viewport shared texture node.
*
* @param {Node} [uvNode=screenUV] - The uv node.
* @param {?Node} [levelNode=null] - The level node.
*/
constructor( uvNode = screenUV, levelNode = null ) {
if ( _sharedFramebuffer === null ) {
_sharedFramebuffer = new FramebufferTexture();
}
super( uvNode, levelNode, _sharedFramebuffer );
}
/**
* Overwritten so the method always returns the unique shared
* framebuffer texture.
*
* @return {FramebufferTexture} The shared framebuffer texture.
*/
getTextureForReference() {
return _sharedFramebuffer;
}
updateReference() {
return this;
}
}
export default ViewportSharedTextureNode;
/**
* TSL function for creating a shared viewport texture node.
*
* @tsl
* @function
* @param {?Node} [uvNode=screenUV] - The uv node.
* @param {?Node} [levelNode=null] - The level node.
* @returns {ViewportSharedTextureNode}
*/
export const viewportSharedTexture = /*@__PURE__*/ nodeProxy( ViewportSharedTextureNode ).setParameterLength( 0, 2 );