glIsTextureEXT(3G) OpenGL Reference glIsTextureEXT(3G)NAME
glIsTextureEXT - determine if a name corresponds to a texture
C SPECIFICATION
GLboolean glIsTextureEXT( GLuint texture )
PARAMETERS
texture A value which might be the name of a texture.
DESCRIPTION
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
glIsTextureEXT is part of the EXT_texture_object extension. See glIntro
for more information about using extensions.
ERRORS
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
glBindTextureEXT, glDeleteTexturesEXT, glGenTexturesEXT, glGet,
glGetTexParameter, glTexImage1D, glTexImage2D, glTexImage3DEXT,
glTexParameter.
Page 1