1991-2006
Silicon Graphics, Inc.
glActiveTexture
3G

# glActiveTexture

select active texture unit

## C Specification

                    void glActiveTexture
                    GLenum texture

## Parameters

`texture`

  Specifies which texture unit to make active. The number of texture units is implementation dependent, but must be at least 8. `texture` must be one of `GL_TEXTURE` i, where i ranges from 0 to (`GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS` - 1). The initial value is `GL_TEXTURE0`.

## Description

`glActiveTexture` selects which texture unit subsequent texture state calls will affect. The number of texture units an implementation supports is implementation dependent, but must be at least 8.

## Errors

`GL_INVALID_ENUM` is generated if `texture` is not one of `GL_TEXTURE` i, where i ranges from 0 to (`GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS` - 1).

## Associated Gets

glGet with argument `GL_ACTIVE_TEXTURE` or `GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS`

## See Also

glTexParameter

## Copyright

Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.