Theme images were decoded straight to RGBA at their full source size
and uploaded to a GPU texture as-is. A large or over-sized image wasted
VRAM and could exceed the GL maximum texture size, and each code path
also hand-managed the decoded pixel buffer with its own free calls.
- Loading from file and from memory now goes through the shared
size-aware decoder with a 2048-pixel cap on the long side. An image
larger than that is downscaled with its aspect ratio kept; an image
whose area is absurd is rejected; a small image is left untouched.
- The decoder owns the pixel buffer for the life of the upload, so the
manual free calls are gone.
Tests cover downscaling a wide image to a 2048 long side with the aspect
kept, rejecting an over-area image, and leaving an under-cap image as-is,
plus the fit-dims math at the theme-art cap.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>