WebGLRenderingContext: getProgramParameter() method
The WebGLRenderingContext.getProgramParameter()
method of
the WebGL API returns information about the
given program.
Syntax
js
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 begl.SEPARATE_ATTRIBS
orgl.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
js
gl.getProgramParameter(program, gl.DELETE_STATUS);
Specifications
Specification |
---|
WebGL Specification # 5.14.9 |
WebGL 2.0 Specification # 3.7.7 |
Browser compatibility
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