HTMLCanvasElement: webglcontextrestored event
The webglcontextrestored
event of the WebGL API is fired if the user agent restores the drawing buffer for a WebGLRenderingContext
object.
Once the context is restored, WebGL resources such as textures and buffers that were created before the context was lost are no longer valid. You need to reinitialize the state of your WebGL application and recreate resources.
Bubbles | No |
---|---|
Cancelable | Yes |
Interface | WebGLContextEvent |
Event handler property | none |
Example
With the help of the WEBGL_lose_context
extension, you can simulate the webglcontextrestored
event:
var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
canvas.addEventListener('webglcontextrestored', function(e) {
console.log(e);
}, false);
gl.getExtension('WEBGL_lose_context').restoreContext();
// "webglcontextrestored" event is logged.
Specifications
Specification |
---|
WebGL Specification # 5.15.3 |
Browser compatibility
BCD tables only load in the browser