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📄 WebGLCapabilities.js

📊 Analysis Summary

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

📚 Table of Contents

• Variables & Constants
• Functions
• Classes

🛠️ File Location:

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

Variables & Constants

Name	Type	Kind	Value	Exported
gl	any	let/var	this.backend.gl	✗
extensions	any	let/var	this.backend.extensions	✗

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Functions

WebGLCapabilities.getMaxAnisotropy(): number

JSDoc:

/**
     * Returns the maximum anisotropy texture filtering value. This value
     * depends on the device and is reported by the `EXT_texture_filter_anisotropic`
     * WebGL extension.
     *
     * @return {number} The maximum anisotropy texture filtering value.
     */

Returns: number

Calls:

• extensions.has
• extensions.get
• gl.getParameter

Code

getMaxAnisotropy() {

        if ( this.maxAnisotropy !== null ) return this.maxAnisotropy;

        const gl = this.backend.gl;
        const extensions = this.backend.extensions;

        if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

            const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

            this.maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );

        } else {

            this.maxAnisotropy = 0;

        }

        return this.maxAnisotropy;

    }

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Classes

WebGLCapabilities

Class Code

class WebGLCapabilities {

    /**
     * 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;

        /**
         * This value holds the cached max anisotropy value.
         *
         * @type {?number}
         * @default null
         */
        this.maxAnisotropy = null;

    }

    /**
     * Returns the maximum anisotropy texture filtering value. This value
     * depends on the device and is reported by the `EXT_texture_filter_anisotropic`
     * WebGL extension.
     *
     * @return {number} The maximum anisotropy texture filtering value.
     */
    getMaxAnisotropy() {

        if ( this.maxAnisotropy !== null ) return this.maxAnisotropy;

        const gl = this.backend.gl;
        const extensions = this.backend.extensions;

        if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

            const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

            this.maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );

        } else {

            this.maxAnisotropy = 0;

        }

        return this.maxAnisotropy;

    }

}

Methods

getMaxAnisotropy(): number

Code

getMaxAnisotropy() {

        if ( this.maxAnisotropy !== null ) return this.maxAnisotropy;

        const gl = this.backend.gl;
        const extensions = this.backend.extensions;

        if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {

            const extension = extensions.get( 'EXT_texture_filter_anisotropic' );

            this.maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );

        } else {

            this.maxAnisotropy = 0;

        }

        return this.maxAnisotropy;

    }

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