Optimize rendering opaque images
@sjoerd
Submitted by Sjoerd Simons Assigned to Ray Strode @halfline
Description
On some of our ARM boards we're using a scripted theme which loads & displays a series of fully opaque png images. Unfortunately this turned out to be rather slow. I'll attach a series of patches to address the biggest issues here, mostly focussed on speeding up the loading & rendering of opaque pngs.
If seperate bugs are preferred please let me know and I'll split them up.