Is it possible to set up an OpenGL scene to allow for pixel-perfect rendering and pixel blitting? I noticed that setting up a scene by doing:

```
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, width, height, 0.0, 0.0, 1.0);

```

And then drawing a pixel using:

```
glBegin(GL_POINTS);
glVertex2i(0, 0);
glEnd();

```

Does *not* consistently draw it on the top-left pixel on every hardware configuration (sometimes it's one pixel to the left, or one below the top-left corner). I realize this is likely due to different implementations of OpenGL by the graphics drivers, but is there a way to make it so that the top-left pixel is (0,0) and the bottom right is (width-1, height-1) consistently? It seems strange that this is something that isn't standardized...

I've seen some 'hacks' that use a translation of (0.375, 0.375) or (0.5, 0.5), but that also seems to solve it for some configurations and not for others.