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Man Pages


Manual Reference Pages  -  GLPOPCLIENTATTRIB (3)

NAME

glPushClientAttrib, glPopClientAttrib - push and pop the client attribute stack

CONTENTS

C Specification
Parameters
C Specification
Description
Notes
Errors
Associated Gets
See Also

C SPECIFICATION

void glPushClientAttrib( GLbitfield mask )

PARAMETERS

mask Specifies a mask that indicates which attributes to save. Values for mask are listed below.

C SPECIFICATION

void glPopClientAttrib( void )

DESCRIPTION

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 OR’ing 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.

NOTES

glPushClientAttrib is available only if the GL version is 1.1 or greater.

Not all values for GL client state can be saved on the attribute stack. For example, select and feedback state cannot be saved.

The depth of the attribute stack depends on the implementation, but it must be at least 16.

Use glPushAttrib and glPopAttrib to push and restore state which is kept on the server. Only pixel storage modes and vertex array state may be pushed and popped with glPushClientAttrib and glPopClientAttrib.

ERRORS

GL_STACK_OVERFLOW is generated if glPushClientAttrib is called while the attribute stack is full.

GL_STACK_UNDERFLOW is generated if glPopClientAttrib is called while the attribute stack is empty.

ASSOCIATED GETS

glGet with argument GL_ATTRIB_STACK_DEPTH
glGet with argument GL_MAX_CLIENT_ATTRIB_STACK_DEPTH

SEE ALSO

glColorPointer, glDisableClientState, glEdgeFlagPointer, glEnableClientState, glGet, glGetError, glIndexPointer, glNormalPointer, glNewList, glPixelStore, glPushAttrib, glTexCoordPointer, glVertexPointer
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GLPUSHCLIENTATTRIB (-->)

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