[pygame] MacOS/PyGame/PyOpenGL mouse inversion

["Dave LeCompte (really)" <dave@xxxxxxxxxxxx>]

Hi there, I'm new to the list, so this may have been answered before.

I've got a PyGame/PyOpenGL app that I'm working on which I can run under
MSWindows or Mac OSX and in windowed or fullscreen mode. I notice that
when I run in a window on my Mac, the value returned by
pygame.mouse.get_pos() is relative to the lower left corner of the screen,
but if I run fullscreen on the Mac, fullscreen on by Windows PC, or in a
window on the Windows PC, the value is relative the the upper left corner
(agreeing with the docs at
http://www.pygame.org/docs/ref/mouse.html#pygame.mouse.get_pos ).

Is this a known issue?

Attached is a short test script that displays the strange behavior.

-Dave LeCompte

import sys

import pygame
from pygame.locals import *

from OpenGL.GL import *
from OpenGL.GLU import *


def main():
    video_flags = OPENGL|DOUBLEBUF

    if "-f" in sys.argv:
        video_flags |= FULLSCREEN

    pygame.init()
    surf=pygame.display.set_mode((640,480), video_flags)

    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluOrtho2D(0,640,480,0)
    glMatrixMode(GL_MODELVIEW)
    glLoadIdentity()
        
    glColor3f(1.0, 1.0, 1.0)

    done=False
    while not done:
        glClear(GL_COLOR_BUFFER_BIT)
        for e in pygame.event.get():
            if e.type==QUIT or e.type == KEYDOWN:
                done=True
        
        mx,my=pygame.mouse.get_pos()

        glBegin(GL_LINE_LOOP)
        glVertex2f(320,0)
        glVertex2f(340,20)
        glVertex2f(300,20)
        glEnd()
        glBegin(GL_LINE_LOOP)
        glVertex2f(mx-5.0,my)
        glVertex2f(mx,my-5.0)
        glVertex2f(mx+5.0,my)
        glVertex2f(mx,my+5.0)
        glEnd()
        
        pygame.display.flip()

main()