HP Workstation zx2000 OpenGL 1.1 Reference for HP-UX 11.x - Page 349

P glPushAttrib glPushAttrib glPushAttrib, glPopAttrib: push and pop the server attribute stack. C Specification void glPushAttrib( GLbitfield mask) void glPopAttrib(void) Parameters mask Specifies a mask that indicates which attributes to save. Values for mask are listed below. Description glPushAttrib takes one argument, a mask that indicates which groups of state variables to save on the attribute stack. Symbolic constants are used to set bits in the mask. mask is typically constructed by ORing several of these constants together. The special mask GL_ALL_ATTRIB_BITS can be used to save all stackable states. The symbolic mask constants and their associated GL state are as follows (the second column lists which attributes are saved): GL_ACCUM_BUFFER_BIT GL_COLOR_BUFFER_BIT Accumulation buffer clear value GL_ALPHA_TEST enable bit Alpha test function and reference value GL_BLEND enable bit Blending source and destination functions Constant blend color Blending equation GL_DITHER enable bit GL_DRAW_BUFFER setting GL_COLOR_LOGIC_OP enable bit GL_INDEX_LOGIC_OP enable bit Logic op function Color mode and index mode clear values Color mode and index mode writemasks Chapter 14 349