WebGLRenderingContext.getTexParameter

The WebGLRenderingContext.getTexParameter() method of the WebGL API returns information about the given texture.

Syntax

any gl.getTexParameter(target, pname);

Parameters

target

A GLenum specifying the binding point (target). Possible values:

• gl.TEXTURE_2D: A two-dimensional texture.
• gl.TEXTURE_CUBE_MAP: A cube-mapped texture.
• When using a WebGL 2 context, the following values are available additionally:
  • gl.TEXTURE_3D: A three-dimensional texture.
  • gl.TEXTURE_2D_ARRAY: A two-dimensional array texture.

pname

A Glenum specifying the information to query. Possible values:

pname	Return type	Description	Possible return values
Available in a WebGL 1 context
gl.TEXTURE_MAG_FILTER	GLenum	Texture magnification filter	gl.LINEAR (default value), gl.NEAREST.
gl.TEXTURE_MIN_FILTER	GLenum	Texture minification filter	gl.LINEAR, gl.NEAREST, gl.NEAREST_MIPMAP_NEAREST, gl.LINEAR_MIPMAP_NEAREST, gl.NEAREST_MIPMAP_LINEAR (default value), gl.LINEAR_MIPMAP_LINEAR.
gl.TEXTURE_WRAP_S	GLenum	Wrapping function for texture coordinate s	gl.REPEAT (default value), gl.CLAMP_TO_EDGE, gl.MIRRORED_REPEAT.
gl.TEXTURE_WRAP_T	GLenum	Wrapping function for texture coordinate t	gl.REPEAT (default value), gl.CLAMP_TO_EDGE, gl.MIRRORED_REPEAT.
Additionally available when using the EXT_texture_filter_anisotropic extension
ext.TEXTURE_MAX_ANISOTROPY_EXT	GLfloat	Maximum anisotropy for a texture	Any float values.
Additionally available when using a WebGL 2 context
gl.TEXTURE_BASE_LEVEL	GLint	Texture mipmap level	Any int values.
gl.TEXTURE_COMPARE_FUNC	GLenum	Comparison function	gl.LEQUAL (default value), gl.GEQUAL, gl.LESS, gl.GREATER, gl.EQUAL, gl.NOT_EQUAL, gl.ALWAYS, gl.NEVER.
gl.TEXTURE_COMPARE_MODE	GLenum	Texture comparison mode	gl.NONE (default value), gl.COMPARE_REF_TO_TEXTURE.
gl.TEXTURE_IMMUTABLE_FORMAT	GLboolean	Immutability of the texture format and size	true or false.
gl.TEXTURE_IMMUTABLE_LEVELS	GLuint	?	Any uint values.
gl.TEXTURE_MAX_LEVEL	GLint	Maximum texture mipmap array level	Any int values.
gl.TEXTURE_MAX_LOD	GLfloat	Texture maximum level-of-detail value	Any float values.
gl.TEXTURE_MIN_LOD	GLfloat	Texture minimum level-of-detail value	Any float values.
gl.TEXTURE_WRAP_R	GLenum	Wrapping function for texture coordinate r	gl.REPEAT (default value), gl.CLAMP_TO_EDGE, gl.MIRRORED_REPEAT.

Return value

Returns the requested texture information (as specified with pname). If an error occurs, null is returned.

Examples

gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER);

Specifications

Specification	Status	Comment
WebGL 1.0 The definition of 'getTexParameter' in that specification.	Recommendation	Initial definition for WebGL.
OpenGL ES 2.0 The definition of 'glGetTexParameter' in that specification.	Standard	Man page of the (similar) OpenGL ES 2.0 API.
WebGL 2.0 The definition of 'getTexParameter' in that specification.	Editor's Draft	Updated definition for WebGL.
OpenGL ES 3.0 The definition of 'glGetTexParameter' in that specification.	Standard	Man page of the (similar) OpenGL ES 3.0 API.

Browser compatibility

See also

• WebGLRenderingContext.texParameterf()
• WebGLRenderingContext.texParameteri()
• EXT_texture_filter_anisotropic