Re: BUG: pygame.image.save(screen) with pyopengl 3.x Re: [pygame] PyOpenGL Screenshots

["René Dudfield" <renesd@xxxxxxxxx>]

hi,

I fixed this on the weekend.  I stopped using pyopengl to get
glReadPixels (since pyopengl 3.x broke the glReadPixels API), and
instead loaded the gl functions dynamically with C.

Committed revision 1261.

You can get auto-built binaries for windows/mac osx here if needed:
http://thorbrian.com/pygame/builds.php

cheers,



On Wed, May 7, 2008 at 2:47 PM, René Dudfield <renesd@xxxxxxxxx> wrote:
> Added a bug to the subject.
>
> 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,
>>  >
>>
>