glIsTexture(3G) OpenGL Reference glIsTexture(3G)NAME
glIsTexture - determine if a name corresponds to a texture
C SPECIFICATION
GLboolean glIsTexture( GLuint texture )
PARAMETERS
texture Specifies a value that may be the name of a texture.
DESCRIPTION
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
glIsTexture is available only if the GL version is 1.1 or greater.
ERRORS
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
glBindTexture, glCopyTexImage1D, glCopyTexImage2D, glDeleteTextures,
glGenTextures, glGet, glGetTexParameter, glTexImage1D, glTexImage2D,
glTexImage3D, glTexParameter
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