mirror of
https://github.com/godotengine/godot.git
synced 2024-12-15 10:12:40 +08:00
97 lines
3.2 KiB
JavaScript
97 lines
3.2 KiB
JavaScript
const Features = { // eslint-disable-line no-unused-vars
|
|
/**
|
|
* Check whether WebGL is available. Optionally, specify a particular version of WebGL to check for.
|
|
*
|
|
* @param {number=} [majorVersion=1] The major WebGL version to check for.
|
|
* @returns {boolean} If the given major version of WebGL is available.
|
|
* @function Engine.isWebGLAvailable
|
|
*/
|
|
isWebGLAvailable: function (majorVersion = 1) {
|
|
try {
|
|
return !!document.createElement('canvas').getContext(['webgl', 'webgl2'][majorVersion - 1]);
|
|
} catch (e) { /* Not available */ }
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Check whether the Fetch API available and supports streaming responses.
|
|
*
|
|
* @returns {boolean} If the Fetch API is available and supports streaming responses.
|
|
* @function Engine.isFetchAvailable
|
|
*/
|
|
isFetchAvailable: function () {
|
|
return 'fetch' in window && 'Response' in window && 'body' in window.Response.prototype;
|
|
},
|
|
|
|
/**
|
|
* Check whether the engine is running in a Secure Context.
|
|
*
|
|
* @returns {boolean} If the engine is running in a Secure Context.
|
|
* @function Engine.isSecureContext
|
|
*/
|
|
isSecureContext: function () {
|
|
return window['isSecureContext'] === true;
|
|
},
|
|
|
|
/**
|
|
* Check whether the engine is cross origin isolated.
|
|
* This value is dependent on Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy headers sent by the server.
|
|
*
|
|
* @returns {boolean} If the engine is running in a Secure Context.
|
|
* @function Engine.isSecureContext
|
|
*/
|
|
isCrossOriginIsolated: function () {
|
|
return window['crossOriginIsolated'] === true;
|
|
},
|
|
|
|
/**
|
|
* Check whether SharedBufferArray is available.
|
|
*
|
|
* Most browsers require the page to be running in a secure context, and the
|
|
* the server to provide specific CORS headers for SharedArrayBuffer to be available.
|
|
*
|
|
* @returns {boolean} If SharedArrayBuffer is available.
|
|
* @function Engine.isSharedArrayBufferAvailable
|
|
*/
|
|
isSharedArrayBufferAvailable: function () {
|
|
return 'SharedArrayBuffer' in window;
|
|
},
|
|
|
|
/**
|
|
* Check whether the AudioContext supports AudioWorkletNodes.
|
|
*
|
|
* @returns {boolean} If AudioWorkletNode is available.
|
|
* @function Engine.isAudioWorkletAvailable
|
|
*/
|
|
isAudioWorkletAvailable: function () {
|
|
return 'AudioContext' in window && 'audioWorklet' in AudioContext.prototype;
|
|
},
|
|
|
|
/**
|
|
* Return an array of missing required features (as string).
|
|
*
|
|
* @returns {Array<string>} A list of human-readable missing features.
|
|
* @function Engine.getMissingFeatures
|
|
*/
|
|
getMissingFeatures: function () {
|
|
const missing = [];
|
|
if (!Features.isWebGLAvailable(2)) {
|
|
missing.push('WebGL2 - Check web browser configuration and hardware support');
|
|
}
|
|
if (!Features.isFetchAvailable()) {
|
|
missing.push('Fetch - Check web browser version');
|
|
}
|
|
if (!Features.isSecureContext()) {
|
|
missing.push('Secure Context - Check web server configuration (use HTTPS)');
|
|
}
|
|
if (!Features.isCrossOriginIsolated()) {
|
|
missing.push('Cross Origin Isolation - Check web server configuration (send correct headers)');
|
|
}
|
|
if (!Features.isSharedArrayBufferAvailable()) {
|
|
missing.push('SharedArrayBuffer - Check web server configuration (send correct headers)');
|
|
}
|
|
// Audio is normally optional since we have a dummy fallback.
|
|
return missing;
|
|
},
|
|
};
|