GLGETPOLYGONSTIPPLE(3G) OpenGL Manual GLGETPOLYGONSTIPPLE(3G)
NAME
glGetPolygonStipple - return the polygon stipple pattern
C SPECIFICATION
void glGetPolygonStipple(GLubyte * pattern);
PARAMETERS
pattern
Returns the stipple pattern. The initial value is all 1's.
DESCRIPTION
glGetPolygonStipple returns to pattern a 32 x 32 polygon stipple pattern. The pattern is packed into memory as if glReadPixels() with both
height and width of 32, type of GL_BITMAP, and format of GL_COLOR_INDEX were called, and the stipple pattern were stored in an internal 32
x 32 color index buffer. Unlike glReadPixels(), however, pixel transfer operations (shift, offset, pixel map) are not applied to the
returned stipple image.
If a non-zero named buffer object is bound to the GL_PIXEL_PACK_BUFFER target (see glBindBuffer()) while a polygon stipple pattern is
requested, pattern is treated as a byte offset into the buffer object's data store.
NOTES
If an error is generated, no change is made to the contents of pattern.
ERRORS
GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_PACK_BUFFER target and the buffer object's data
store is currently mapped.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_PACK_BUFFER target and the data would be packed
to the buffer object such that the memory writes required would exceed the data store size.
GL_INVALID_OPERATION is generated if glGetPolygonStipple is executed between the execution of glBegin() and the corresponding execution of
glEnd().
ASSOCIATED GETS
glGet() with argument GL_PIXEL_PACK_BUFFER_BINDING
SEE ALSO
glPixelStore(), glPixelTransfer(), glPolygonStipple(), glReadPixels()
COPYRIGHT
Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
AUTHORS
opengl.org
opengl.org 06/10/2014 GLGETPOLYGONSTIPPLE(3G)