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

program

A WebGLProgram to get parameter information from.

pname

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).

• WebGLRenderingContext.getShaderParameter()