Peter Verswyvelen :

However, in the code below the blue and green triangle should render on top of each other, but the green triangle is rendered incorrectly.

Being a newbie, I hesitate to file a bug report... Can anyone reproduce this? Maybe it works fine on unix?

I can reproduce this with 0.9.12. $ uname -srmo Linux 2.6.20-16-generic i686 GNU/Linux I'm quoting your program below because I'll Cc this to the gtk2hs-users list.

module Main where

import Graphics.SOE.Gtk

shape = [(200,100), (200,200), (100,200), (200,100)]

main = runGraphics $ do w <- openWindow "Buggy polgon fill?" (300,300) setGraphic w $ (withColor Red $ polyline shape) `overGraphic` (withColor Green $ drawRegion $ createPolygon shape) drawInWindow w $ (withColor Red $ polyline shape) `overGraphic` (withColor Blue $ polygon shape) waitForClose w closeWindow w

waitForClose w = do e <- getWindowEvent w case e of Closed -> return () otherwise -> waitForClose w