Re: master 8b7aaf3e56: Speed up GIF animations

[Po Lu]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> +  int cache_image_size = width * height * ximg->bits_per_pixel / 8;

Emacs_Pix_Container is an opaque type that can be typedefed to a variety
of things on different platforms.

You cannot directly refer to bits_per_pixel, which only exists on X.
This will probably break if bits_per_pixel is not a multiple of 8 as
well.  It can be any random value on X Windows, and might not even exist
if the image format is not ZPixmap.

What is the temp field for?  Is it for storing bitmap data?  If so, it
should just be a bitmap set using the PUT_PIXEL macro.