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WebGLRenderingContext.getProgramParameter()

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

Syntax

any gl.getProgramParameter(program, pname);

Parameters

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.

Return value

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

Examples

gl.getProgramParameter(program, gl.DELETE_STATUS);

Specifications

Specification Status Comment
WebGL 1.0
The definition of 'getProgramParameter' in that specification.
Recommendation Initial definition.
OpenGL ES 2.0
The definition of 'glGetProgramiv' in that specification.
Standard Man page of the (similar) OpenGL API.
WebGL 2.0
The definition of 'getProgramParameter' in that specification.
Editor's Draft Adds new pname values:
gl.TRANSFORM_FEEDBACK_BUFFER_MODE,
gl.TRANSFORM_FEEDBACK_VARYINGS,
gl.ACTIVE_UNIFORM_BLOCKS

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support 9 12 4.0 (2.0) 11 12 5.1
WebGL 2 No support [2] No support Nightly build [1] No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support ? 25 4.0 (2.0) 1.0 ? 12 8.0
WebGL 2 No support No support No support No support No support No support No support

[1] WebGL 2 is enabled by default in Firefox Nightly. To enable it in a release version of Firefox, set the preference webgl.enable-prototype-webgl2 to true in about:config.

[2] To use an experimental implementation of WebGL 2 in Chrome, you have to start Chrome with the runtime flag --enable-unsafe-es3-apis.

See also

Document Tags and Contributors

 Contributors to this page: fscholz
 Last updated by: fscholz,