EXT_color_buffer_half_float extension
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
const ext = gl.getExtension("EXT_color_buffer_half_float");
gl.renderbufferStorage(gl.RENDERBUFFER, ext.RGBA16F_EXT, 256, 256);
Specifications
Browser compatibility
|
Desktop |
Mobile |
|
Chrome |
Edge |
Firefox |
Internet Explorer |
Opera |
Safari |
WebView Android |
Chrome Android |
Firefox for Android |
Opera Android |
Safari on IOS |
Samsung Internet |
EXT_color_buffer_half_float |
63 |
17 |
47
36–47Not supported on Windows.
|
No |
50 |
14 |
63 |
63 |
36 |
46 |
14 |
8.0 |
See also