Resizing an FBO

[Jake Zerrer]

Hi all-

New Kivy user here. I'm playing with something that requires me to occasionally resize a framebuffer. However, I can't quite figure out how to do it. A little bit of test code here:

https://gist.github.com/2513254

Line 36 attempts to resize an already-initialized framebuffer. If I comment out line 36, all runs fine. However, if that line of code remains in place, then all I get is a black screen. I believe that line 17 should theoretically fix this, though of course it doesn't. 

What am I doing wrong?

Thanks!

z

[Mathieu Virbel]

Hi,

I've seen multiple issues on the code:

- populate_fbo() does'nt remove the previous instruction. You always add new one. Don't forget to clear the previous one with: self.fbo.clear()

- resize_fbo() resize correctly the fbo, but a new texture is generated. Cause of that, the previous texture used in setup_fbo() in the rectangle is not valid anymore. You need to set the texture for the Rectangle instruction again:

    def setup_fbo(...):

       ...

       self.r = Rectangle(..., texture=self.fbo.texture)

    def resize_fbo(...):

        self.fbo.size = ...

        self.r.texture = self.fbo.texture

Regards,

Mathieu