The WebGLRenderingContext.isContextLost()
method returns a Boolean
indicating whether or not the WebGL context has been lost.
Syntax
gl.isContextLost();
Return value
A Boolean
. True if the context is lost, false otherwise.
Examples
For example, when checking for program linking success, you could also check if the context is not lost:
gl.linkProgram(program); if (!gl.getProgramParameter(program, gl.LINK_STATUS) && !gl.isContextLost()) { var info = gl.getProgramInfoLog(program); console.log("Error linking program:\n" + info); }
Specifications
Specification | Status | Comment |
---|---|---|
WebGL 1.0 The definition of 'WebGLRenderingContext.isContextLost' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 9 | 4.0 (2.0) | 11 | 12 | 5.1 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | (Yes) | 25 | 4.0 (2.0) | (Yes) | 12 | 8.1 |
See also
- The
WebGLContextEvent
signals changes in the context state.