The problem I'm seeing is that the HOpenGL GLUT window is being created without problems, but it seems that no calls are getting through to the driver: nothing I do on the display callback gets rendered. I have no idea what may be happening, but I wonder if you're experiencing the same problem. I'm running OSX 10.3.4 on a Radeon-based iBook..
No, everything works fine here... more details please (ghc --version, source code, build command, ...). You might want to Cc the hopengl@haskell.org list, in case someone there figures it out.
Sorry for the lack of details in the previous message... $ ghc --version The Glorious Glasgow Haskell Compilation System, version 6.2.1 The source code: ----- import Graphics.UI.GLUT import Graphics.Rendering.OpenGL main = do (progName, _) <- getArgsAndInitialize createAWindow progName mainLoop createAWindow windowName = do createWindow windowName displayCallback $= displayPoints displayPoints = do clearColor $= Color4 1.0 0.0 0.0 1.0 clear [ColorBuffer] renderPrimitive Polygon $ mapM_ (\ (x,y,z)-> vertex $ Vertex3 x y z) myPoints swapBuffers myPoints :: [(GLfloat, GLfloat, GLfloat)] myPoints = [(-0.25, 0.25, 0.0) ,(0.75, 0.35, 0.0) ,(0.75, -0.15, 0.0) ,(-0.75, -0.25, 0.0)] ----- The build command: $ ghc --make APolygon.hs -o APolygon What happens is that the window seems to be created ok (at least I get a window entitled "APolygon"), but the contents of the window are just plain white. It should be to a red background, and a white polygon should be drawn.. I don't know if I'm doing anything wrong, but it doesn't look like it. I'm sorry I'm unable to give any more OSX specific info.. this is my first mac and I don't have much developer experience on the platform.. Thanks a lot, -carlos