glIsTexture(3G)		       OpenGL Reference		       glIsTexture(3G)

NAME    [Toc]    [Back]

     glIsTexture - determine if	a name corresponds to a	texture

C SPECIFICATION    [Toc]    [Back]

     GLboolean glIsTexture( GLuint texture )

PARAMETERS    [Toc]    [Back]

     texture  Specifies	a value	that may be the	name of	a texture.

DESCRIPTION    [Toc]    [Back]

     glIsTexture 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, glIsTexture
     returns GL_FALSE.

NOTES    [Toc]    [Back]

     glIsTexture is available only if the GL version is	1.1 or greater.

ERRORS    [Toc]    [Back]

     GL_INVALID_OPERATION is generated if glIsTexture 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]

     glBindTexture, glCopyTexImage1D, glCopyTexImage2D,	glDeleteTextures,
     glGenTextures, glGet, glGetTexParameter, glTexImage1D, glTexImage2D,
     glTexImage3D, glTexParameter


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