fglIsTexture(3G) OpenGL Reference fglIsTexture(3G)NAME
fglIsTexture - determine if a name corresponds to a texture
FORTRAN SPECIFICATION
LOGICAL*1 fglIsTexture( INTEGER*4 texture )
PARAMETERS
texture Specifies a value that may be the name of a texture.
DESCRIPTION
fglIsTexture 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, fglIsTexture
returns GL_FALSE.
NOTES
fglIsTexture is available only if the GL version is 1.1 or greater.
ERRORS
GL_INVALID_OPERATION is generated if fglIsTexture is executed between the
execution of fglBegin and the corresponding execution of fglEnd.
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
fglBindTexture, fglCopyTexImage1D, fglCopyTexImage2D, fglDeleteTextures,
fglGenTextures, fglGet, fglGetTexParameter, fglTexImage1D, fglTexImage2D,
fglTexImage3D, fglTexParameter
Page 1