OpenGL man pages
glGetPolygonStipple - return the polygon stipple pattern
void glGetPolygonStipple( GLubyte *mask )
mask Returns the stipple pattern.
glGetPolygonStipple returns to mask a 32x32 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 32x32 color index buffer.
Unlike glReadPixels, however, pixel transfer operations (shift, offset,
pixel map) are not applied to the returned stipple image.
If an error is generated, no change is made to the contents of mask.
GL_INVALID_OPERATION is generated if glGetPolygonStipple is executed
between the execution of glBegin and the corresponding execution of glEnd.
glPixelStore, glPixelTransfer, glPolygonStipple, glReadPixels
Fri Dec 6 11:18:03 EST 1996
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