In fact, object’s partial plane must be
mapped to the pixel.
Is it right???
Because the dot must be ideally a zero area.
Anyway, window coordinates in openGL
mean pixels. And we convert the window coordinate
value to world coordinate via gluUnproject()
But this mapping is one to one.
(plane’s center point(maybe I think) to pixel)
My problem is that I want to know
four coordinate values(vertices)
mapped to one pixel.
How can I obtain four vertices(world coordinate) mapped to one pixel?
Please Help me!!!