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📄 WebGLExtensions.js

📊 Analysis Summary

Metric	Count
🔧 Functions	2
🧱 Classes	1
📊 Variables & Constants	1

📚 Table of Contents

• Variables & Constants
• Functions
• Classes

🛠️ File Location:

📂 src/renderers/webgl-fallback/utils/WebGLExtensions.js

Variables & Constants

Name	Type	Kind	Value	Exported
extension	any	let/var	this.extensions[ name ]	✗

---

Functions

WebGLExtensions.get(name: string): any

JSDoc:

/**
     * Returns the extension object for the given extension name.
     *
     * @param {string} name - The extension name.
     * @return {Object} The extension object.
     */

Parameters:

• name string

Returns: any

Calls:

• this.gl.getExtension

Code

get( name ) {

        let extension = this.extensions[ name ];

        if ( extension === undefined ) {

            extension = this.gl.getExtension( name );

            this.extensions[ name ] = extension;

        }

        return extension;

    }

WebGLExtensions.has(name: string): boolean

JSDoc:

/**
     * Returns `true` if the requested extension is available.
     *
     * @param {string} name - The extension name.
     * @return {boolean} Whether the given extension is available or not.
     */

Parameters:

• name string

Returns: boolean

Calls:

• this.availableExtensions.includes

Code

has( name ) {

        return this.availableExtensions.includes( name );

    }

---

Classes

WebGLExtensions

Class Code

class WebGLExtensions {

    /**
     * Constructs a new utility object.
     *
     * @param {WebGLBackend} backend - The WebGL 2 backend.
     */
    constructor( backend ) {

        /**
         * A reference to the WebGL 2 backend.
         *
         * @type {WebGLBackend}
         */
        this.backend = backend;

        /**
         * A reference to the rendering context.
         *
         * @type {WebGL2RenderingContext}
         */
        this.gl = this.backend.gl;

        /**
         * A list with all the supported WebGL extensions.
         *
         * @type {Array<string>}
         */
        this.availableExtensions = this.gl.getSupportedExtensions();

        /**
         * A dictionary with requested WebGL extensions.
         * The key is the name of the extension, the value
         * the requested extension object.
         *
         * @type {Object<string,Object>}
         */
        this.extensions = {};

    }

    /**
     * Returns the extension object for the given extension name.
     *
     * @param {string} name - The extension name.
     * @return {Object} The extension object.
     */
    get( name ) {

        let extension = this.extensions[ name ];

        if ( extension === undefined ) {

            extension = this.gl.getExtension( name );

            this.extensions[ name ] = extension;

        }

        return extension;

    }

    /**
     * Returns `true` if the requested extension is available.
     *
     * @param {string} name - The extension name.
     * @return {boolean} Whether the given extension is available or not.
     */
    has( name ) {

        return this.availableExtensions.includes( name );

    }

}

Methods

get(name: string): any

Code

get( name ) {

        let extension = this.extensions[ name ];

        if ( extension === undefined ) {

            extension = this.gl.getExtension( name );

            this.extensions[ name ] = extension;

        }

        return extension;

    }

has(name: string): boolean

Code

has( name ) {

        return this.availableExtensions.includes( name );

    }

---