a79acdd29a
The P1 gate is a pixel comparison, so it needs to be a command rather than a paragraph. `tools/verify-screen` renders each screen in the manifest both ways and reports the largest per-channel difference anywhere in the frame. Both renderers are held to the same inputs on purpose: * the reference CLI is the one `build-reference-cli` builds from the revision the exporter is PINNED to -- not `/reborn/target/`, which is a live mount of the other agent's checkout and moves mid-iteration. A pixel disagreement against a moving decoder has a free variable in it and proves nothing. * `--black`, because the screen carries its own background and the CLI's default dim slate stands in for a 3D scene that is not on this screen. * `--primitives --animated`, because the port draws every element at rest and those two flags are what make the CLI draw the same set. NOT `--focus`: nothing is focused at rest. The threshold is 3/255 -- what integer-truncating compositing in the CLI and float rounding on a GPU differ by. Above that is a placement, order or colour disagreement that needs a reason, and the script says DIFFERS rather than pretending a wider tolerance is a result.
78 lines
3.5 KiB
Bash
Executable File
78 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Diff Godot's drawing of an exported screen against `sylpheed-cli screen
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# render` of the same build -- the P1 gate.
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#
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# tools/verify-screen # every screen in the manifest
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# tools/verify-screen main_menu title # named screens
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#
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# Writes <screen>.godot.png, <screen>.ref.png and <screen>.diff.png into
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# $OUT (default: a directory under /tmp) and prints, per screen, the largest
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# per-channel difference anywhere in the frame.
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#
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# The two renderers are held to the same inputs on purpose:
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#
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# * the REFERENCE CLI is the one built by `build-reference-cli`, from the same
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# `sylpheed-formats` revision the exporter is pinned to. /reborn's own
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# target/ is a live mount of the other agent's checkout and moves mid-run; a
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# pixel disagreement against a moving decoder proves nothing.
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# * `--black` because Godot clears to black and the screen carries its own
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# background. The CLI's default dim slate stands in for a 3D scene behind an
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# in-mission screen, which is not this screen.
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# * `--primitives --animated` because the port draws every element at its
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# resting pose, and those two flags are what make the CLI draw the same set.
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# `--focus` is NOT passed: nothing is focused at rest (HANDOFF Q5 measured
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# initial focus as unstable boot to boot, so choosing one is P5's decision).
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#
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# A difference here is not automatically the port's fault. Say which renderer is
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# wrong and why -- do not tune until they match.
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set -euo pipefail
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cd "${PROJECT_DIR:-/work}"
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CLI="${SYLPHEED_CLI:-${CARGO_TARGET_DIR:-/sylph-home/port/target-container}/release/sylpheed-cli}"
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DISC="${SYLPHEED_DISC:-/disc}"
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OUT="${OUT:-${TMPDIR:-/tmp}/verify-screen}"
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export DISPLAY="${DISPLAY:-:97}"
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[ -x "$CLI" ] || { echo "no reference CLI at $CLI -- run build-reference-cli" >&2; exit 2; }
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[ -f export/manifest.json ] || { echo "no export/manifest.json -- run build-export --run" >&2; exit 2; }
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mkdir -p "$OUT"
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# Godot needs one scan to register the `class_name` globals; without it every
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# script fails to parse and the run dies with no frame drawn.
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[ -d port/.godot ] || godot --headless --path port --import >/dev/null 2>&1
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screens=("$@")
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if [ ${#screens[@]} -eq 0 ]; then
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mapfile -t screens < <(python3 -c '
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import json; print("\n".join(s["name"] for s in json.load(open("export/manifest.json"))["screens"]))')
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fi
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status=0
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for name in "${screens[@]}"; do
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build=$(python3 -c '
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import json,sys
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m=json.load(open("export/manifest.json"))
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f=next(s["file"] for s in m["screens"] if s["name"]==sys.argv[1])
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print(json.load(open("export/"+f))["source"]["build"])' "$name")
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"$CLI" screen render "$DISC/dat/GP_TITLE.pak" "$OUT/$name.ref.png" \
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--build "$build" --black --primitives --animated >/dev/null
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godot --path port --resolution 1280x720 -- \
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"--screen=$name" "--capture=$OUT/$name.godot.png" >"$OUT/$name.log" 2>&1
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convert "$OUT/$name.godot.png" "$OUT/$name.ref.png" \
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-compose difference -composite -colorspace Gray -auto-level "$OUT/$name.diff.png"
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read -r max mean <<<"$(convert "$OUT/$name.godot.png" "$OUT/$name.ref.png" \
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-compose difference -composite -format "%[fx:maxima*255] %[fx:mean*255]" info:)"
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# 3/255 is what integer-truncating compositing in the CLI and float rounding
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# in a GPU differ by. Anything above that is a placement, order or colour
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# disagreement and needs a reason, not a threshold.
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verdict=OK
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awk "BEGIN{exit !($max > 3)}" && { verdict=DIFFERS; status=1; }
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printf '%-16s build %-3s max %-5s mean %-8s %s\n' "$name" "$build" "$max" "${mean:0:6}" "$verdict"
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done
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echo "artifacts in $OUT"
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exit $status
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