Re: [PyOpenGL-Users] OpenGL textures

[Matthew M. <mj...@ms...>]

Doesn't image.GetData() return RGB, and not RGBA, data?

On 3/29/07, altern <al...@gm...> wrote:
>
> thanks andrew, i dont know how i did not find this myself, i was looking
> in
> wxBitmap class for this type of function.
> still i dont get the images properly displayed. I can see it has similar
> colors as the original but it is heavily pixelated. Is there any
> difference in the format of the image data array itself between wx and
> pygame?
>
> Andrew Wilson(e)k dio:
> > Hello,
> >   You may want to try,
> >
> > bin = image.GetData()
> >
> >
> > Thanks
> >   andrew
> >
> >
> >
> > On 3/29/07, *altern* < al...@gm... <mailto:al...@gm...>>
> wrote:
> >
> >     hi
> >
> >     I am trying to translate a pygame+opengl application to wx+opengl.
> >     And I
> >     am stuck at the function to import images to create OpenGL textures.
> >
> >     I already asked for help on the wxpython list, but nobody seemed to
> be
> >     interested on my problem, so i thought there might be some
> wx-pyopengl
> >     users in the pyopengl list.
> >
> >     This is the pygame code:
> >
> >     surface = pygame.image.load(path)
> >     if surface.get_alpha is None:
> >             surface = surface.convert()
> >     else:
> >             surface = surface.convert_alpha ()
> >     bin = pygame.image.tostring(surface, "RGBA", 1)
> >     w, h = surface.get_width(), surface.get_height()
> >     textid = glGenTextures(1)
> >     glBindTexture(GL_TEXTURE_2D, textid)
> >     gluBuild2DMipmaps(GL_TEXTURE_2D, 4, w, h, GL_RGBA, GL_UNSIGNED_BYTE,
> >     bin)
> >     ... and so on ...
> >
> >     and this is the wx code i am using :
> >
> >     image = wx.Image(path, wx.BITMAP_TYPE_ANY, -1)
> >     bin = image.ConvertToBitmap()
> >     w,h = image.GetWidth(), image.GetHeight()
> >     textid = glGenTextures(1)
> >     glBindTexture(GL_TEXTURE_2D, textid)
> >     gluBuild2DMipmaps(GL_TEXTURE_2D, 4, w, h, GL_RGBA, GL_UNSIGNED_BYTE,
> >     bin)
> >     ... etc ...
> >
> >     It doesnt crash but the texture that OpenGL displays in not at all
> the
> >     image i am importing but some weird random colors. I guess this is
> the
> >     bit that i am missing, since printing "image.ConvertToBitmap()"
> returns
> >     a wxBitmap instance and not the image data
> >     bin = pygame.image.tostring(surface, "RGBA", 1)
> >
> >     I have been trying to find out how to access the data an looking for
> >     examples on the net but did not find anything.
> >
> >     any tips? thanks!
> >
> >     enrike
> >
> >
> >
> -------------------------------------------------------------------------
> >     Take Surveys. Earn Cash. Influence the Future of IT
> >     Join SourceForge.net's Techsay panel and you'll get the chance to
> >     share your
> >     opinions on IT & business topics through brief surveys-and earn cash
> >
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> >     <
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV>
> >     _______________________________________________
> >     PyOpenGL Homepage
> >     http://pyopengl.sourceforge.net <http://pyopengl.sourceforge.net>
> >     _______________________________________________
> >     PyOpenGL-Users mailing list
> >     PyO...@li...
> >     <mailto:PyO...@li...>
> >     https://lists.sourceforge.net/lists/listinfo/pyopengl-users
> >
> >
>
>
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> PyOpenGL Homepage
> http://pyopengl.sourceforge.net
> _______________________________________________
> PyOpenGL-Users mailing list
> PyO...@li...
> https://lists.sourceforge.net/lists/listinfo/pyopengl-users
>