glGetPolygonStipple returns to pattern a 32 × 32 polygon stipple pattern. The pattern is packed into memory as if glReadPixels with both and of 32, of GL_BITMAP, and of GL_COLOR_INDEX were called, and the stipple pattern were stored in an internal 32 × 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.
If an error is generated, no change is made to the contents of pattern.
Copyright 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/.
glGetPolygonStipple: man2/glGetPolygonStipple.xml
glGetPolygonStipple returns to pattern a 32 × 32 polygon stipple pattern. The pattern is packed into memory as if glReadPixels with both and of 32, of GL_BITMAP, and of GL_COLOR_INDEX were called, and the stipple pattern were stored in an internal 32 × 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.
If an error is generated, no change is made to the contents of pattern.