index.md

title	short-title	slug	page-type	browser-compat
WebGLRenderingContext: getProgramParameter() method	getProgramParameter()	Web/API/WebGLRenderingContext/getProgramParameter	web-api-instance-method	api.WebGLRenderingContext.getProgramParameter

{{APIRef("WebGL")}}

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

Syntax

getProgramParameter(program, pname)

Parameters

• program

  • : A {{domxref("WebGLProgram")}} to get parameter information from.

• pname

  • : A {{domxref("WebGL_API/Types", "GLenum")}} specifying the information to query. Possible values:

    • gl.DELETE_STATUS

      • : Returns a {{domxref("WebGL_API/Types", "GLboolean")}} indicating whether or not the program is flagged for deletion.

    • gl.LINK_STATUS

      • : Returns a {{domxref("WebGL_API/Types", "GLboolean")}} indicating whether or not the last link operation was successful.

    • gl.VALIDATE_STATUS

      • : Returns a {{domxref("WebGL_API/Types", "GLboolean")}} indicating whether or not the last validation operation was successful.

    • gl.ATTACHED_SHADERS

      • : Returns a {{domxref("WebGL_API/Types", "GLint")}} indicating the number of attached shaders to a program.

    • gl.ACTIVE_ATTRIBUTES

      • : Returns a {{domxref("WebGL_API/Types", "GLint")}} indicating the number of active attribute variables to a program.

    • gl.ACTIVE_UNIFORMS

      • : Returns a {{domxref("WebGL_API/Types", "GLint")}} indicating the number of active uniform variables to a program.

    When using a {{domxref("WebGL2RenderingContext", "WebGL 2 context", "", 1)}}, the following values are available additionally:

    • gl.TRANSFORM_FEEDBACK_BUFFER_MODE
      • : Returns a {{domxref("WebGL_API/Types", "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 {{domxref("WebGL_API/Types", "GLint")}} indicating the number of varying variables to capture in transform feedback mode.
    • gl.ACTIVE_UNIFORM_BLOCKS
      • : Returns a {{domxref("WebGL_API/Types", "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

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("WebGLRenderingContext.getShaderParameter()")}}