WebGLRenderingContext: getProgramParameter() 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.

Note: This feature is available in Web Workers.

The WebGLRenderingContext.getProgramParameter() method of the WebGL API returns information about the given program.

getProgramParameter(program, pname)

A WebGLProgram to get parameter information from.

A GLenum specifying the information to query. Possible values:

gl.DELETE_STATUS: Returns a GLboolean indicating whether or not the program is flagged for deletion.
gl.LINK_STATUS: Returns a GLboolean indicating whether or not the last link operation was successful.
gl.VALIDATE_STATUS: Returns a GLboolean indicating whether or not the last validation operation was successful.
gl.ATTACHED_SHADERS: Returns a GLint indicating the number of attached shaders to a program.
gl.ACTIVE_ATTRIBUTES: Returns a GLint indicating the number of active attribute variables to a program.
gl.ACTIVE_UNIFORMS: Returns a GLint indicating the number of active uniform variables to a program.

When using a WebGL 2 context, the following values are available additionally:

gl.TRANSFORM_FEEDBACK_BUFFER_MODE: Returns a GLenum indicating the buffer mode when transform feedback is active. May be gl.SEPARATE_ATTRIBS or gl.INTERLEAVED_ATTRIBS.
gl.TRANSFORM_FEEDBACK_VARYINGS: Returns a GLint indicating the number of varying variables to capture in transform feedback mode.
gl.ACTIVE_UNIFORM_BLOCKS: Returns a GLint indicating the number of uniform blocks containing active uniforms.

Returns the requested program information (as specified with pname).

gl.getProgramParameter(program, gl.DELETE_STATUS);

Specification
WebGL Specification # 5.14.9
WebGL 2.0 Specification # 3.7.7

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