# NousResearch/hermes-agent · Fix transparent image alpha compositing for vision

## Open now

- 1 issue, 0 PRs open on GitHub.
- #64548: \[Bug\]: vision: transparent PNG/WebP reads as "glitch / horizontal lines" noise on llama.cpp local backends — alpha channel dropped instead of composited

A bug where transparent PNG/WebP images render as visual noise or glitches in vision backends, caused by the alpha channel being dropped rather than composited. The cluster includes the bug report and two fix attempts that flatten transparency onto a white background before encoding.

## TL;DR

- 3 member(s): 1 open issue(s), 0 closed issue(s), 0 open PR(s), 0 merged PR(s), 2 PR(s) closed without merging.
- No fix has been merged to main; one or more PRs were attempted (see below).
- **Recommended:** review the prior/competing PR(s) below. A fix was attempted but not merged; your case may extend or revive that work.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `unresolved`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Open related issues

- #64548: \[Bug\]: vision: transparent PNG/WebP reads as "glitch / horizontal lines" noise on llama.cpp local backends — alpha channel dropped instead of composited

## Prior & competing PRs

- **#64677: fix(vision): composite transparent PNG alpha onto white before encoding**. closed without merge · fix tier `suggested`
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#64549`, `#64548`
  - _suggested-tier fix detail withheld; re-request with `?tier=all` to include it._
- **#64549: fix(vision): flatten transparent images onto white before embedding**. closed without merge
  - maintainer direction: category `partial_fix`; implication `needs_llm`; refs `f57b8753ff23`, `#64548`, `#64549`, `#64677`, `#374151`

## Fix status

- No merged fix on record.
- Subsystem: `agent`