EXT_color_buffer_half_float extension

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2020.

The EXT_color_buffer_half_float extension is part of the WebGL API and adds the ability to render to 16-bit floating-point color buffers.

WebGL extensions are available using the WebGLRenderingContext.getExtension() method. For more information, see also Using Extensions in the WebGL tutorial.

Note: This extension is available to both, WebGL1 and WebGL2 contexts. On WebGL 2, it's an alternative to using the EXT_color_buffer_float extension on platforms that support 16-bit floating point render targets but not 32-bit floating point render targets.

The OES_texture_half_float extension implicitly enables this extension.

Constants

ext.RGBA16F_EXT

RGBA 16-bit floating-point color-renderable format.

ext.RGB16F_EXT

RGB 16-bit floating-point color-renderable format.

ext.FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT

?

ext.UNSIGNED_NORMALIZED_EXT

?

Extended methods

This extension extends WebGLRenderingContext.renderbufferStorage():

  • The internalformat parameter now accepts ext.RGBA16F_EXT and ext.RGBA16F_EXT.

Examples

js
const ext = gl.getExtension("EXT_color_buffer_half_float");

gl.renderbufferStorage(gl.RENDERBUFFER, ext.RGBA16F_EXT, 256, 256);

Specifications

Specification
WebGL EXT_color_buffer_half_float Extension Specification

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
EXT_color_buffer_half_float

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
Partial support
Partial support
Has more compatibility info.

See also