Re: [pygame] PyOpenGL Screenshots

["René Dudfield" <renesd@xxxxxxxxx>]

hi again,

note, you can convert a series of images with image magik, or the gimp
most easily I think...

convert -delay 20 -loop 0 bla*.tga animated.gif

Or opening them as gimp layers, then saving to an animated gif.

cu,



On Wed, May 7, 2008 at 2:44 PM, René Dudfield <renesd@xxxxxxxxx> wrote:
> looks like pyopengl 3.x returns a numpy array now instead of a string
>  by default... which breaks pygame.image.save on gl with pyopengl 3.x.
>
>  Here's a work around screenshot function for gl.
>
>
>  def save_screen(screen, filename):
>
>     def readScreen(x, y, width, height):
>         """ Read in the screen information in the area specified """
>         glFinish()
>         glPixelStorei(GL_PACK_ALIGNMENT, 4)
>         glPixelStorei(GL_PACK_ROW_LENGTH, 0)
>         glPixelStorei(GL_PACK_SKIP_ROWS, 0)
>         glPixelStorei(GL_PACK_SKIP_PIXELS, 0)
>
>         data = glReadPixels(x, y, width, height, GL_RGB, GL_UNSIGNED_BYTE)
>         if hasattr(data, "tostring"):
>             data = data.tostring()
>
>         return data
>     def saveImageData(width, height, data, filename):
>         """ Save image data """
>         surface = pygame.image.fromstring(data, (width, height), 'RGB', 1)
>         pygame.image.save(surface, filename)
>
>     data = readScreen(0,0, screen.get_width(), screen.get_height())
>     saveImageData(screen.get_width(), screen.get_height(), data, filename)
>
>
>
>
>
>  On Wed, May 7, 2008 at 2:27 PM, René Dudfield <renesd@xxxxxxxxx> wrote:
>  > hi,
>  >
>  >  glReadPixels, make a surface, then use pygame.image.save()
>  >
>  >  Then use ffmpeg, or vlc etc to make a movie out of still frames.
>  >
>  >  cheers,
>  >
>