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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

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,