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
internalformatparameter now acceptsext.RGBA16F_EXTandext.RGB16F_EXT.
Examples
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 |