#

API Documentation for: NEXT
Show: Inherited Protected Private Deprecated

# WebGLInspector Class

Defined in: `WebGLInspector:38`
Module: EaselJS

A utility and helper class designed to work with StageGL to help investigate and test performance or display problems. It contains logging functions to analyze behaviour and performance testing utilities.

## Constructor

### `WebGLInspector`

(

- `stage`

)

Defined in `WebGLInspector:38`

#### Parameters:

- `stage` StageGL

  The default stage to use when none is supplied.

- Index
- Methods
- Properties

## Item Index

### Methods

- _initializeWebGL
- dispProps static
- log
- logContextInfo
- logDepth
- logTextureFill
- toggleGPUDraw

### Properties

- _stage
- alternateOutput static

## Methods

### `_initializeWebGL`

() protected

Defined in `_initializeWebGL:80`

### `dispProps`

(

- `prepend`
- `item`

)
static

Defined in `dispProps:218`

Utility function for use with {{#crossLink "logDepth"))((/crossLink}}. Logs an item's position and registration. Useful to see if something is being forced off screen or has an integer position.

#### Parameters:

- `prepend` String

  The string to show before the item, usually formatting for a tree view.

- `item` DisplayObject

  The item we're currently logging about.

### `log`

(

- `[stage=this._stage]`

)

Defined in `log:87`

Perform all of the logging reports at once.

#### Parameters:

- `[stage=this._stage]` StageGL optional

  The stage to log information for.

### `logContextInfo`

(

- `gl`

)

Defined in `logContextInfo:157`

Examine the context and provide information about its capabilities.

#### Parameters:

- `gl` WebGLRenderingContext

  The WebGL context to inspect.

### `logDepth`

(

- `[children=this._stage.children]`
- `prepend`
- `customLog`

)

Defined in `logDepth:131`

Recursively walk the entire display tree, log the attached items, and display it in a tree view.

#### Parameters:

- `[children=this._stage.children]` Array optional

  The children array to walk through.

- `prepend` String

  What to prepend to this output from this point onwards.

- `customLog` Function

  Which logging function to use, mainly for filtering or formatting output. Fallback hierarchy is customLog -> alternateOutput -> console.log.

### `logTextureFill`

(

- `[stage=this._stage]`

)

Defined in `logTextureFill:177`

Simulate renders and watch what happens for textures moving around between draw calls. A texture moving between slots means it was removed and then re-added to draw calls. Performance may be better if it was allowed to stay in place.

#### Parameters:

- `[stage=this._stage]` StageGL optional

  The stage to log information for.

### `toggleGPUDraw`

(

- `[stage=this._stage]`
- `enabled`

)

Defined in `toggleGPUDraw:101`

Replace the stage's Draw command with an empty draw command. This is useful for testing performance, and ignoring rendering.

#### Parameters:

- `[stage=this._stage]` StageGL optional

  The stage to log information for.

- `enabled` Boolean

  Force enabled. If left undefined, it will toggle.

## Properties

### `_stage`

StageGL protected

Defined in `_stage:52`

The internal reference to the default stage this Inspector is for.

### `alternateOutput`

Console protected static

Defined in `alternateOutput:66`

Alternate output for debugging situations where "console" is not available, i.e. Mobile or remote debugging. Expects object with a "log" function that takes any number of params.

Default: null