#+TITLE: Visual QA — GPU Backend
#+STARTUP: showall

Each subdirectory contains one test category. Inside you will find:
- =README.org= — what to verify and what failure looks like
- =test.el=    — loads the same scenario in GPU and vanilla Emacs for side-by-side comparison

* How to run any test

  Open two terminals.  In the first, run the GPU version:

  : emacs --no-init-file -l qa/NN-name/test.el

  In the second, run the vanilla baseline (GPU disabled):

  : EMACS_GPU_DISABLE=1 emacs --no-init-file -l qa/NN-name/test.el

  Place both windows side by side and compare.
  Mark items in the README.org as PASS / FAIL / SKIP.

* Test categories

  | Dir                    | What is tested                              |
  |------------------------+---------------------------------------------|
  | [[file:01-render-cycle/]]  | Present timing, no-flash on open/switch     |
  | [[file:02-text-glyphs/]]   | ASCII, CJK, bold/italic, colors, box-draw   |
  | [[file:03-compositions/]]  | Combining chars, Arabic, Hebrew, BiDi       |
  | [[file:04-emoji/]]         | Color emoji, ZWJ sequences, flags           |
  | [[file:05-decorations/]]   | Underline (5 styles), overline, strike      |
  | [[file:06-boxes-reliefs/]] | Box outline, raised/sunken relief           |
  | [[file:07-cursor/]]        | 4 cursor types + Metal animation modes      |
  | [[file:08-fringe/]]        | Built-in bitmaps, custom bitmap, background |
  | [[file:09-images/]]        | PNG/JPEG/SVG/GIF, alpha, scale, slice       |
  | [[file:10-scroll/]]        | scroll_run parity, easings, hscroll         |
  | [[file:11-bars/]]          | mode-line, header, tab-bar, tool-bar        |
  | [[file:12-windows/]]       | Splits, dividers, child frames              |
  | [[file:13-display-props/]] | Overlays, line-numbers, hl-line, margins    |
  | [[file:14-major-modes/]]   | org-mode, dired, magit, corfu              |
  | [[file:15-transitions/]]   | Buffer crossfade, HiDPI capture             |
  | [[file:16-video/]]         | Inline video (macOS Metal only)             |
  | [[file:17-edge-cases/]]    | 10k-line buffer, atlas overflow, themes     |