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Clarify that loseContext also frees WebGL resources #42894

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Merged
Josh-Cena merged 3 commits into from
Apr 10, 2026
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Merged

Clarify that loseContext also frees WebGL resources #42894

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711dc04
Clarify that loseContext also frees WebGL resources
badwriter123 Jan 24, 2026
68ff83c
Merge paragraphs
Josh-Cena Apr 10, 2026
9b281b2
Update restoreContext too
Josh-Cena Apr 10, 2026
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16 changes: 4 additions & 12 deletions files/en-us/web/api/webgl_lose_context/losecontext/index.md
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Original file line number Diff line number Diff line change
Expand Up @@ -8,12 +8,9 @@ browser-compat: api.WEBGL_lose_context.loseContext

{{APIRef("WebGL")}}

The **WEBGL_lose_context.loseContext()** method is part of the [WebGL API](/en-US/docs/Web/API/WebGL_API) and allows you to simulate losing
the context of a {{domxref("WebGLRenderingContext")}} context.
The **`loseContext()`** method of the `WEBGL_lose_context` extension is part of the [WebGL API](/en-US/docs/Web/API/WebGL_API) and allows you to simulate losing the context of a {{domxref("WebGLRenderingContext")}}.

It triggers the steps described in the WebGL specification for handling context lost.
The context will remain lost until {{domxref("WEBGL_lose_context.restoreContext()")}} is
called.
It triggers the [steps described in the WebGL specification](https://registry.khronos.org/webgl/specs/latest/1.0/#5.15.2) for handling context lost. The context will remain lost until {{domxref("WEBGL_lose_context.restoreContext()")}} is called. It also destroys the underlying graphics context and all graphics resources. This is the recommended mechanism for applications to programmatically halt their use of the WebGL API.

## Syntax

Expand All @@ -31,9 +28,7 @@ None ({{jsxref("undefined")}}).

## Examples

With this method, you can simulate the
[`webglcontextlost`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextlost_event)
event:
With this method, you can simulate the [`webglcontextlost`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextlost_event) event:

```js
const canvas = document.getElementById("canvas");
Expand All @@ -59,7 +54,4 @@ gl.getExtension("WEBGL_lose_context").loseContext();
## See also

- {{domxref("WebGLRenderingContext.isContextLost()")}}
- Events:
[`webglcontextlost`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextlost_event),
[`webglcontextrestored`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextrestored_event),
[`webglcontextcreationerror`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextcreationerror_event)
- Events: [`webglcontextlost`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextlost_event), [`webglcontextrestored`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextrestored_event), [`webglcontextcreationerror`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextcreationerror_event)
14 changes: 5 additions & 9 deletions files/en-us/web/api/webgl_lose_context/restorecontext/index.md
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Expand Up @@ -8,8 +8,9 @@ browser-compat: api.WEBGL_lose_context.restoreContext

{{APIRef("WebGL")}}

The **WEBGL_lose_context.restoreContext()** method is part of the [WebGL API](/en-US/docs/Web/API/WebGL_API) and allows you to simulate
restoring the context of a {{domxref("WebGLRenderingContext")}} object.
The **`restoreContext()`** method of the `WEBGL_lose_context` extension is part of the [WebGL API](/en-US/docs/Web/API/WebGL_API) and allows you to simulate restoring the context of a {{domxref("WebGLRenderingContext")}}.

It triggers the [steps described in the WebGL specification](https://registry.khronos.org/webgl/specs/latest/1.0/#5.15.3) for handling context restored. The context is not usable until the {{domxref("HTMLCanvasElement.webglcontextrestored_event", "webglcontextrestored")}} event is fired.

## Syntax

Expand All @@ -34,9 +35,7 @@ Browsers may not report WebGL errors by default. WebGL's error reporting works b

## Examples

With this method, you can simulate the
[`webglcontextrestored`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextrestored_event)
event:
With this method, you can simulate the [`webglcontextrestored`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextrestored_event) event:

```js
const canvas = document.getElementById("canvas");
Expand All @@ -60,7 +59,4 @@ gl.getExtension("WEBGL_lose_context").restoreContext();
## See also

- {{domxref("WebGLRenderingContext.isContextLost()")}}
- Events:
[`webglcontextlost`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextlost_event),
[`webglcontextrestored`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextrestored_event),
[`webglcontextcreationerror`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextcreationerror_event)
- Events: [`webglcontextlost`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextlost_event), [`webglcontextrestored`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextrestored_event), [`webglcontextcreationerror`](/en-US/docs/Web/API/HTMLCanvasElement/webglcontextcreationerror_event)
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