glIsTextureEXT(3G)	       OpenGL Reference		    glIsTextureEXT(3G)

NAME    [Toc]    [Back]

     glIsTextureEXT - determine	if a name corresponds to a texture

C SPECIFICATION    [Toc]    [Back]

     GLboolean glIsTextureEXT( GLuint texture )

PARAMETERS    [Toc]    [Back]

     texture  A	value which might be the name of a texture.

DESCRIPTION    [Toc]    [Back]

     glIsTextureEXT returns GL_TRUE if texture is currently the	name of	a
     texture.  If texture is zero, or is a non-zero value that is not
     currently the name	of a texture, or if an error occurs, glIsTextureEXT
     returns GL_FALSE.

     glIsTextureEXT is not included in display lists.

NOTES    [Toc]    [Back]

     glIsTextureEXT is part of the EXT_texture_object extension.  See glIntro
     for more information about	using extensions.

ERRORS    [Toc]    [Back]

     GL_INVALID_OPERATION is generated if glIsTextureEXT is executed between
     the execution of glBegin and the corresponding execution of glEnd.


MACHINE	DEPENDENCIES
     RealityEngine, RealityEngine2, and	VTX systems do not support texture
     name sharing.  Texture names are always local to the rendering context
     which was active at the time the names were created.

     The implementation	on O2 systems uses a minimum of	64K bytes for every
     texture object defined.

SEE ALSO    [Toc]    [Back]

     glBindTextureEXT, glDeleteTexturesEXT, glGenTexturesEXT, glGet,
     glGetTexParameter,	glTexImage1D, glTexImage2D, glTexImage3DEXT,
     glTexParameter.


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