HP Workstation zx2000 OpenGL 1.1 Reference for HP-UX 11.x - Page 247

I glIsTexture glIsTexture 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. See Also glBindTexture, glCopyTexImage1D, glCopyTexImage2D, glDeleteTextures, glGenTextures, glGet, glGetTexParameter, glTexImage1D, glTexImage2D, glTexParameter Chapter 9 247