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Manual Reference Pages  - GLPUSHCLIENTATTRIB (3G)

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glPushClientAttrib, glPopClientAttrib - push and pop the client attribute stack

CONTENTS

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

void glPushClientAttrib( GLbitfield mask); 1.1 )

1.1	Specifies a mask that indicates which attributes to save. Values for 1.1 are listed below.

void glPopClientAttrib( void); 1.1 )

 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. 1.1 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.

 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.

When the  GL_ARB_multitexture extension is supported, pushing and popping client vertex array state apples to all supported texture units, and the active client texture state.

 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.

 glGet with argument  GL_ATTRIB_STACK_DEPTH
 glGet with argument  GL_MAX_CLIENT_ATTRIB_STACK_DEPTH

 glColorPointer(3G),  glDisableClientState(3G),  glEdgeFlagPointer(3G),  glEnableClientState(3G),  glGet(3G),  glGetError(3G),  glIndexPointer(3G),  glNormalPointer(3G),  glNewList(3G),  glPixelStore(3G),  glPushAttrib(3G),  glTexCoordPointer(3G),  glVertexPointer(3G)

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