glGetPolygonStipple

NAME

glGetPolygonStipple -- return the polygon stipple pattern

C SPECIFICATION

void glGetPolygonStipple(GLubyte *mask)

PARAMETERS

mask

Returns the stipple pattern.

DESCRIPTION

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.

NOTES

If an error is generated, no change is made to the contents of mask.

ERRORS

GL_INVALID_OPERATION is generated if glGetPolygonStipple is called between a call to glBegin and the corresponding call to glEnd.

SEE ALSO

glPixelStore, glPixelTransfer, glPolygonStipple, glReadPixels

back to the OpenGL index page

© 1995 Uwe Behrens. All rights reserved.