PixiJS

Class: ContextSystem

PIXI.ContextSystem

System plugin to the renderer to manage the context.

new PIXI.ContextSystem (renderer) overrides

ContextSystem.ts:33
Name Type Description
renderer PIXI.Renderer

The renderer this System works for.

Extends

Implements

Members

extensions object readonly

Extensions being used

Properties:
Name Type Description
anisotropicFiltering EXT_texture_filter_anisotropic

WebGL v1 and v2 extension
depthTexture WEBGL_depth_texture

WebGL v1 extension
drawBuffers WEBGL_draw_buffers

WebGL v1 extension
floatTexture OES_texture_float

WebGL v1 extension
loseContext WEBGL_lose_context

WebGL v1 extension
vertexArrayObject OES_vertex_array_object

WebGL v1 extension

isLost boolean readonly

true if the context is lost

webGLVersion number readonly

Either 1 or 2 to reflect the WebGL version being used

Default Value:
  • 1

Methods

createContext (canvas, options) WebGLRenderingContext

ContextSystem.ts:135

Helper class to create a WebGL Context

Name Type Description
canvas HTMLCanvasElement

the canvas element that we will get the context from
options object

An options object that gets passed in to the canvas element containing the context attributes
See:
Returns:
Type Description
WebGLRenderingContext the WebGL context

contextChange (gl) void protected

ContextSystem.ts:89

Handle the context change event

Name Type Description
gl WebGLRenderingContext

new webgl context

getExtensions () void protected

ContextSystem.ts:178

Auto-populate the extensions

handleContextLost (event) void protected

ContextSystem.ts:228

Handles a lost webgl context

Name Type Description
event WebGLContextEvent

The context lost event.

handleContextRestored () void protected

ContextSystem.ts:239

Handles a restored webgl context

initFromContext (gl) void protected

ContextSystem.ts:106

Initialize the context

Name Type Description
gl WebGLRenderingContext

WebGL context

initFromOptions (options) void protected

ContextSystem.ts:121

Initialize from context options

Name Type Description
options object

context attributes
See:

postrender () void protected

ContextSystem.ts:267

Handle the post-render runner event

validateContext (gl) void protected

ContextSystem.ts:280

Validate context

Name Type Description
gl WebGLRenderingContext

Render context

Inherited Properties

From class PIXI.System

renderer Renderer inherited

Reference to the main renderer

Inherited Methods

From class PIXI.System

destroy () void inherited

ISystem.ts:48

Destroy and don't use after this.