Re: [PyOpenGL-Users] OpenGL textures

[Andrew W. <and...@al...>]

You may want to give PIL a shot.
http://www.pythonware.com/products/pil/
Thanks
Andrew





On 3/29/07, Matthew Morris <mj...@ms...> wrote:
>
> Maybe make a new buffer: RGB_RGB_RGB_.....  and fill in the blanks with
> the data from GetAlpha(). But there might be a better way, who knows.
>
> -Matt
>
> On 3/29/07, altern <al...@gm...> wrote:
> >
> > you are right i just discovered that. I can see as well that there is a
> > way to get the alpha info
> > image.GetAlpha()
> > but i am not sure how to use this two different types of data to
> > construct a valid opengl texture with alpha.
> >
> > Matthew Morris(e)k dio:
> > > Doesn't image.GetData () return RGB, and not RGBA, data?
> > >
> > > On 3/29/07, *altern* <al...@gm... <mailto: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...> <mailto: 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
> > >      >
> > >      >
> > >      >
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