WebGLRenderingContext: getBufferParameter() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The WebGLRenderingContext.getBufferParameter() method of
the WebGL API returns information about the
buffer.
Syntax
getBufferParameter(target, pname)
Parameters
target-
A
GLenumspecifying the target buffer object. Possible values:gl.ARRAY_BUFFER-
Buffer containing vertex attributes, such as vertex coordinates, texture coordinate data, or vertex color data.
gl.ELEMENT_ARRAY_BUFFER-
Buffer used for element indices.
When using a WebGL 2 context, the following values are available additionally:
gl.COPY_READ_BUFFER-
Buffer for copying from one buffer object to another.
gl.COPY_WRITE_BUFFER-
Buffer for copying from one buffer object to another.
gl.TRANSFORM_FEEDBACK_BUFFER-
Buffer for transform feedback operations.
gl.UNIFORM_BUFFER-
Buffer used for storing uniform blocks.
gl.PIXEL_PACK_BUFFER-
Buffer used for pixel transfer operations.
gl.PIXEL_UNPACK_BUFFER-
Buffer used for pixel transfer operations.
pname-
A
GLenumspecifying information to query. Possible values:gl.BUFFER_SIZE-
Returns a
GLintindicating the size of the buffer in bytes. gl.BUFFER_USAGE-
Returns a
GLenumindicating the usage pattern of the buffer. One of the following:gl.STATIC_DRAWgl.DYNAMIC_DRAWgl.STREAM_DRAW
When using a WebGL 2 context, the following values are available additionally:
gl.STATIC_READgl.DYNAMIC_READgl.STREAM_READgl.STATIC_COPYgl.DYNAMIC_COPYgl.STREAM_COPY
Return value
Examples
gl.getBufferParameter(gl.ARRAY_BUFFER, gl.BUFFER_SIZE);
Specifications
| Specification |
|---|
| WebGL Specification # 5.14.5 |
| WebGL 2.0 Specification # 3.7.3 |
Browser compatibility
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