WebGL2RenderingContext: readBuffer() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.
Note: This feature is available in Web Workers.
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
js
readBuffer(source)
Parameters
source-
A
GLenumspecifying 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 (undefined).
Examples
js
gl.readBuffer(gl.COLOR_ATTACHMENT0);
Specifications
| Specification |
|---|
| WebGL 2.0 Specification # 3.7.4 |