This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.
The WebGL2RenderingContext.readBuffer()
method of the WebGL 2 API selects a color buffer as the source for pixels for subsequent calls to copyTexImage2D
, copyTexSubImage2D
, copyTexSubImage3D
or readPixels
.
Syntax
void gl.readBuffer(src);
Parameters
src
- A
GLenum
specifying a color buffer. Possible values:
gl.BACK
- Reads from the back color buffer.
gl.NONE
: Reads from no color buffer.gl.COLOR_ATTACHMENT{0-15}
: Reads from one of the 16 color attachment buffers.
Return value
None.
Examples
gl.readBuffer(gl.COLOR_ATTACHMENT0);
Specifications
Specification | Status | Comment |
WebGL 2.0The definition of 'readBuffer' in that specification. | Editor's Draft | Initial definition for WebGL. |
OpenGL ES 3.0The definition of 'glReadBuffer' in that specification. | Standard | Man page of the (similar) OpenGL API. |
Browser compatibility
The compatibility table in 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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
readBuffer
|
Chrome
Full support 56 |
Edge
Full support 79 |
Firefox
Full support 51 |
IE
No support No |
Opera
Full support 43 |
Safari
No support No |
WebView Android
Full support 58 |
Chrome Android
Full support 58 |
Firefox Android
Full support 51 |
Opera Android
Full support 43 |
Safari iOS
No support No |
Samsung Internet Android
Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support
See also
WebGLRenderingContext.copyTexImage2D()
WebGLRenderingContext.copyTexSubImage2D()
WebGL2RenderingContext.copyTexSubImage3D()
WebGLRenderingContext.readPixels()
WebGL2RenderingContext.readBuffer() by Mozilla Contributors is licensed under CC-BY-SA 2.5.