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.
Availability: This extension is available to WebGL 1 contexts only. For WebGL 2, use the EXT_color_buffer_float extension.
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.RGBA16F_EXT.
Examples
var ext = gl.getExtension("EXT_color_buffer_half_float");
gl.renderbufferStorage(gl.RENDERBUFFER, ext.RBGA16F_EXT, 256, 256);
Specifications
| Specification | Status | Comment |
|---|---|---|
| EXT_color_buffer_half_float The definition of 'EXT_color_buffer_half_float' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | ? | 30.0 (30.0) | ? | ? | ? |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? | ? |