Web/API/WebGLRenderingContext/getExtension

The WebGLRenderingContext.getExtension() method enables a WebGL extension.

Syntax

gl.getExtension(name);

Parameters

name

A String for the name of the WebGL extension to enable.

Return value

A WebGL extension object, or null if name does not match (case-insensitive) to one of the strings in WebGLRenderingContext.getSupportedExtensions.

Examples

Once a WebGL extension is enabled, you are able to use the methods, properties or constants that this extension object provides.

var canvas = document.getElementById('canvas');
gl = canvas.getContext('webgl');

gl.getExtension('WEBGL_lose_context').loseContext();

WebGL extensions

Extensions for the WebGL API are registered in the WebGL Extension Registry. The current extensions are:

• ANGLE_instanced_arrays
• EXT_blend_minmax
• EXT_color_buffer_float
• EXT_color_buffer_half_float
• EXT_disjoint_timer_query
• EXT_float_blend '
• EXT_frag_depth
• EXT_sRGB
• EXT_shader_texture_lod
• EXT_texture_compression_bptc
• EXT_texture_compression_rgtc
• EXT_texture_filter_anisotropic
• KHR_parallel_shader_compile
• OES_element_index_uint
• OES_fbo_render_mipmap
• OES_standard_derivatives
• OES_texture_float
• OES_texture_float_linear
• OES_texture_half_float
• OES_texture_half_float_linear
• OES_vertex_array_object
• OVR_multiview2
• WEBGL_color_buffer_float
• WEBGL_compressed_texture_astc
• WEBGL_compressed_texture_atc
• WEBGL_compressed_texture_etc
• WEBGL_compressed_texture_etc1
• WEBGL_compressed_texture_pvrtc
• WEBGL_compressed_texture_s3tc
• WEBGL_compressed_texture_s3tc_srgb
• WEBGL_debug_renderer_info
• WEBGL_debug_shaders
• WEBGL_depth_texture
• WEBGL_draw_buffers
• WEBGL_lose_context

Specifications

Specification	Status	Comment
WebGL 1.0The definition of 'WebGLRenderingContext.getExtension' in that specification.	Recommendation	Initial definition.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
getExtension	Chrome Full support 9	Edge Full support 12	Firefox Full support 4	IE Full support 11	Opera Full support 12	Safari Full support 5.1	WebView Android Full support Yes	Chrome Android Full support 25	Firefox Android Full support Yes	Opera Android Full support 12	Safari iOS Full support 8	Samsung Internet Android Full support 1.5

Legend

Full support  

Full support

See also

• WebGLRenderingContext.getSupportedExtensions()
• webglreport.com

WebGLRenderingContext.getExtension() by Mozilla Contributors is licensed under CC-BY-SA 2.5.