[Haskell-beginners] Trying to read a bitmap with hOpenGL

Peter Verswyvelen bugfact at gmail.com
Tue Aug 4 11:54:15 EDT 2009

You didn't provide the smiley.bmp image, so I made my own 24-bit bitmap.
When loading it and printing the width/height in your bmp loader, I get
twice a zero, so your loader seems incorrect.
I don't have the time to dig deeper into your loader function, but maybe you
can find some inspiration using this code:


A BMP loader can be found in


On Mon, Aug 3, 2009 at 9:51 PM, <builes.adolfo at googlemail.com> wrote:

> Hi All,
> I have been following an OpenGL book which has its examples in cpp, but
> using haskell instead. I have a problem when trying to read a bitmap, I
> haven't managed to render the file to the buffer, I did a little parser
> based on the one in RWH for the bmp file, and apparently everything seems to
> work well, but when I call drawPixels I don't get a clear image. The code
> that I'm using is here :
> http://gist.github.com/160787
> What am I doing wrong ?
> Thanks in advance for any help.
> abuiles
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