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 aGLboolean
indicating whether or not the program is flagged for deletion.gl.LINK_STATUS
: Returns aGLboolean
indicating whether or not the last link operation was successful.gl.VALIDATE_STATUS
: Returns aGLboolean
indicating whether or not the last validation operation was successful.gl.ATTACHED_SHADERS
: Returns aGLint
indicating the number of attached shaders to a program.gl.ACTIVE_ATTRIBUTES
: Returns aGLint
indicating the number of active attribute variables to a program.gl.ACTIVE_UNIFORMS
: Returns aGLint
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 aGLenum
indicating the buffer mode when transform feedback is active. May begl.SEPARATE_ATTRIBS
orgl.INTERLEAVED_ATTRIBS
.gl.TRANSFORM_FEEDBACK_VARYINGS
: Returns aGLint
indicating the number of varying variables to capture in transform feedback mode.gl.ACTIVE_UNIFORM_BLOCKS
: Returns aGLint
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
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
getProgramParameter | Chrome Full support 9 | Edge Full support 12 | Firefox Full support 4 | IE Full support 11 | Opera Full support 12 | Safari Full support 5.1 | WebView Android Full support Yes | Chrome Android Full support 25 | Firefox Android Full support Yes | Opera Android Full support 12 | Safari iOS Full support 8 | Samsung Internet Android Full support 1.5 |
WebGL2 | Chrome Full support 56 | Edge Full support 79 | Firefox Full support 51 | IE No support No | Opera Full support 43 | Safari No support No | WebView Android Full support 58 | Chrome Android Full support 58 | Firefox Android Full support 51 | Opera Android Full support 43 | Safari iOS No support No | Samsung Internet Android Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support