The renderer this System works for.
true if the context is lost
Handle the context change event
new webgl context
Helper class to create a WebGL Context
the canvas element that we will get the context from
An options object that gets passed in to the canvas element containing the context attributes
the WebGL context
Generic destroy methods to be overridden by the subclass
Auto-populate the extensions
Handles a lost webgl context
The context lost event.
Handles a restored webgl context
Initialize the context
WebGL context
Initialize from context options
context attributes
Handle the post-render runner event
Validate context
Render context
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System plugin to the renderer to manage the context.
PIXI