Re: renderString problems
"Stuart Cook" <[email protected]>
| Newsgroups | gmane.comp.lang.haskell.cafe,gmane.comp.lang.haskell.hopengl |
|---|---|
| Message-ID | <[email protected]> |
On 8/2/07, Dave Tapley <[email protected]> wrote: > Using a BitmapFont I can get strings to appear but they demonstrate > the odd behaviour of translating themselves a distance equal to their > length every time my displayCallback function is evaluated. I've never used OpenGL from Haskell, but it sounds like renderString is modifying your modelview matrix with each call, presumably to make it easier to chain lots of text together in one frame. Since the matrix never gets reset, the translation effect accumulates each time the scene is redrawn. The quick fix would be to call loadIdentity (i.e. glLoadIdentity) each time you update, before drawing anything. Stuart