glPushClientAttrib takes one argument, a mask that indicates which groups of client-state variables to save on the client attribute stack. Symbolic constants are used to set bits in the mask. mask is typically constructed by specifying the bitwise-or of several of these constants together. The special mask GL_CLIENT_ALL_ATTRIB_BITS can be used to save all stackable client state.
The symbolic mask constants and their associated GL client state are as follows (the second column lists which attributes are saved):
glPopClientAttrib restores the values of the client-state variables saved with the last glPushClientAttrib. Those not saved are left unchanged.
It is an error to push attributes onto a full client attribute stack or to pop attributes off an empty stack. In either case, the error flag is set, and no other change is made to GL state.
Initially, the client attribute stack is empty.
Parameters
mask: number
Specifies a mask that indicates which attributes to save. Values for mask are listed below.
glPushClientAttribtakes one argument, a mask that indicates which groups of client-state variables to save on the client attribute stack. Symbolic constants are used to set bits in the mask. mask is typically constructed by specifying the bitwise-or of several of these constants together. The special mask GL_CLIENT_ALL_ATTRIB_BITS can be used to save all stackable client state.The symbolic mask constants and their associated GL client state are as follows (the second column lists which attributes are saved):
GL_CLIENT_PIXEL_STORE_BIT Pixel storage modes GL_CLIENT_VERTEX_ARRAY_BIT Vertex arrays (and enables)
glPopClientAttrib restores the values of the client-state variables saved with the last
glPushClientAttrib. Those not saved are left unchanged.It is an error to push attributes onto a full client attribute stack or to pop attributes off an empty stack. In either case, the error flag is set, and no other change is made to GL state.
Initially, the client attribute stack is empty.