P2-1 判据 2:`Selected: AdapterInfo {` 与字段不在同一行时(pretty-print Debug 漂移)
`device_type` 取不到、旧写法默认 `"?"` 而 `"?" ∉ {Cpu,Other}` ⇒ 判绿。改成取不到即判红。
P2-2 判据 1:`"wgpu" in renderers` 是「曾经出现过」,把 CPU 那次的 stderr >> 追加进来
再配 CPU 那张图会判绿。改成 `set(renderers) == {"wgpu"}`(全部 [shot] 行都声称 wgpu)。
P2-3 doc §2:A6 `--expect-refuse` 那行的「3/3」需要传 PNG 路径才成立,按表复跑是 2/2;
命令列补上 PNG,并单列「不传 PNG = 2/2」一行。
行数:判据脚本 383 → 311(自测脚手架搬到 tests/gpu_shot_selftest.py,124 行;向量
16 → 19 条,红 16 / 绿 3,新增「多行 Debug」「空体」「混入异种 renderer」三条靶子)。
312 lines
14 KiB
Python
312 lines
14 KiB
Python
#!/usr/bin/env python3
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"""GPU 截图证据判定(M249):把「这张图真是 GPU 档出来的」变成机器判据,而不是靠人读日志。
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为什么需要它:M246 实测到 `--renderer=gpu` 落到 RX 6600 XT / Vulkan(DiscreteGpu)并出图,但那份
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结论是**人读 258 行日志**得出的。日志少一行、`Selected` 换了适配器、PNG 是上一次的残留,人眼复核
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一遍就得重来。本脚本把那套判据固定成三分钟能复跑一遍的门禁,且**缺哪条就点名哪条**。
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入参 = 一份 stderr 日志 + 一张 PNG(可选 `--expect-refuse` 走负例口径)。正例六条判据(每条抓得住
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什么、抓不住什么见 `packaging/docs/gpu-evidence.md` §2):
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1. 截图那一行 `[shot] … renderer=wgpu`——**不是** `[probe] renderer = wgpu`:后者只是启动前的意图,
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M246 的 A6 负例里它照样打印 wgpu,却一个像素都没画。
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2. `Selected: AdapterInfo { … device_type: X }` 的 `X` 不在 `DISALLOWED_DEVICE_TYPES` 内。
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3. PNG 能解码且像素数 > 0。
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4. PNG 宽高 = 日志里 `[shot] W×H` 声明的宽高(把图和日志钉在一起)。
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5. `[backend] final=wgpu result=started`(后端自己的结论行与上面几条不矛盾)。
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6. PNG 过 `check_screenshot.py` 的非空白判据(复用它的解码器与阈值,不复制第二份)。
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`--expect-refuse` 是负例口径(M246 的 A6):要求 `[backend] final=… via=refuse`、**没有**任何
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`[shot]` 出图行、且目标 PNG 不存在。它证明「该拒绝时真拒绝了」,不证明「GPU 能出图」。
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零第三方依赖;PNG 只解码一次,用的是同目录 `check_screenshot.py` 的 `decode_png` / `measure` / `verdict`。
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用法::
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python packaging/check_gpu_shot.py shot.stderr.log shot.png # 正例:判定,0/1 退出
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python packaging/check_gpu_shot.py a6.stderr.log --expect-refuse # 负例:判定拒绝是否成立
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python packaging/check_gpu_shot.py --self-test # 19 条向量(数据+脚手架都在 tests/)
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"""
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from __future__ import annotations
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import re
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import sys
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import zlib
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from pathlib import Path
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sys.path.insert(0, str(Path(__file__).resolve().parent)) # 同目录 import(-m 方式调用时也要成立)
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from check_screenshot import ( # noqa: E402
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DEFAULT_MIN_EDGE_RATIO,
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DEFAULT_MIN_STDDEV,
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DEFAULT_MIN_UNIQUE,
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PngError,
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decode_png,
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measure,
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verdict,
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)
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#: 这些 `device_type` 等于「不是硬件 GPU」:`Cpu` = WARP/软渲染适配器,`Other` = 未分类(本机那条
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#: `Other` 是 Gl 兼容层)。用 `not in` 而不是 `in {DiscreteGpu, IntegratedGpu}`,与
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#: `crates/app-iced/src/probe.rs:165-167` 的硬件判据同口径:`VirtualGpu` 之类新词条不会因为本脚本
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#: 没登记就被当成「不是硬件」。反过来,把 `Cpu` 从这张禁令里拿掉正是最想抓的回归(向量第 3 条)。
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DISALLOWED_DEVICE_TYPES = frozenset({"Cpu", "Other"})
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#: 截图行里的 renderer。只认 `[shot]` 行 —— `[probe] renderer = …` 是启动前的意图,不是结果。
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SHOT_RENDERER_RE = re.compile(r"^\[shot\][^\n]*?\brenderer=(\S+)", re.MULTILINE)
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#: `[shot] 1180x760 scale=1 -> …`:出图行声明的像素尺寸。
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SHOT_SIZE_RE = re.compile(r"^\[shot\]\s+(\d+)x(\d+)\b", re.MULTILINE)
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#: `[gpu] …compositor: Selected: AdapterInfo { … }`:真正建出来的那块适配器。这两处约束不是洁癖:
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#: 每份日志里还有一行 `[probe] 取证:出现 …Selected: AdapterInfo…` 的**提示文本**(含同样几个字、
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#: 但没有 `{`),锚 `^\[gpu\]` + 要求紧跟 `{` 才不会被那行骗过去。
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SELECTED_RE = re.compile(r"^\[gpu\][^\n]*Selected:\s*AdapterInfo\s*\{(?P<body>[^\n]*)", re.MULTILINE)
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ADAPTER_NAME_RE = re.compile(r'name:\s*"([^"]*)"')
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DEVICE_TYPE_RE = re.compile(r"device_type:\s*(\w+)")
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ADAPTER_BACKEND_RE = re.compile(r"backend:\s*(\w+)")
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#: `[backend] final=… result=… … via=…`:后端自己的结论行。
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BACKEND_FINAL_RE = re.compile(r"^\[backend\] final=(\S+)\s+result=(\S+)(?P<rest>[^\n]*)", re.MULTILINE)
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VIA_RE = re.compile(r"\bvia=(\w+)")
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#: 判据编号 → 标签。编号是报告里的次序,也在 `--self-test` 的向量里被逐条点名。
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LABELS = {
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1: "截图行 renderer=wgpu",
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2: "Selected: AdapterInfo 的 device_type 不是 Cpu/Other",
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3: "PNG 能解码且非空",
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4: "PNG 宽高 = 日志 [shot] 的宽高",
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5: "后端结论行 final=wgpu result=started",
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6: "PNG 不是空白帧",
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7: "后端结论行 via=refuse",
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8: "没有出图行([shot] 尺寸 + renderer 都不该有)",
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9: "目标 PNG 不存在(拒绝出图就该一张都没有)",
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}
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class Report:
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"""逐条判据的结论。失败时由 `print_report` 逐条点名,绝不只印一个 FAILED。"""
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def __init__(self) -> None:
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self.items: list[tuple[int, bool, str]] = []
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def add(self, criterion: int, ok: bool, detail: str = "") -> bool:
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self.items.append((criterion, ok, detail))
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return ok
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def problems(self) -> list[str]:
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return [LABELS[criterion] for criterion, ok, _detail in self.items if not ok]
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def print_report(self, log_path: Path, png_path: Path | None) -> None:
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for criterion, ok, detail in self.items:
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print(f"{'[ok]' if ok else '[fail]'} {criterion}. {LABELS[criterion]}" + (f":{detail}" if detail else ""))
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target = str(log_path) if png_path is None else f"{log_path} + {png_path}"
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problems = self.problems()
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if problems:
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print(f"[fail] 判据没过 {len(problems)}/{len(self.items)} 条({target})", file=sys.stderr)
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else:
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print(f"[ok] {len(self.items)} 条判据全过({target})")
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def read_log(path: Path) -> str:
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"""日志按 UTF-8 读、坏字节替换 —— 判据只看 ASCII 标记,不该因为一行中文乱码就崩。"""
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return path.read_text(encoding="utf-8", errors="replace")
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def shot_renderers(text: str) -> list[str]:
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return SHOT_RENDERER_RE.findall(text)
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def shot_size(text: str) -> tuple[int, int] | None:
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match = SHOT_SIZE_RE.search(text)
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return (int(match.group(1)), int(match.group(2))) if match else None
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def _pick(pattern: re.Pattern[str], text: str, default: str | None = "?") -> str | None:
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match = pattern.search(text)
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return match.group(1) if match else default
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def selected_adapter(text: str) -> dict[str, str | None] | None:
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"""只取 `Selected:` 那一行:`Available adapters: [...]` 里有 12 条 `AdapterInfo`,取错就全错。
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`device_type` 取不到时返回 `None`(**不是** `"?"`):一旦 iced 改成 pretty-print Debug,
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字段就落不到 `{` 同一行,此时按「取不到 = 判红」处理,不许静默给绿(M249 r1 P2-1)。
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"""
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match = SELECTED_RE.search(text)
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if match is None:
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return None
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body = match.group("body")
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return {
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"name": _pick(ADAPTER_NAME_RE, body),
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"device_type": _pick(DEVICE_TYPE_RE, body, None),
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"backend": _pick(ADAPTER_BACKEND_RE, body),
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}
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def backend_final(text: str) -> dict[str, str] | None:
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match = BACKEND_FINAL_RE.search(text)
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if match is None:
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return None
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via = VIA_RE.search(match.group("rest"))
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return {"final": match.group(1), "result": match.group(2), "via": via.group(1) if via else ""}
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def decode_shot(png_path: Path, report: Report) -> tuple[int, int, dict | None]:
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"""解码 PNG 并核对像素数,返回 (宽, 高, 统计)。读不出就记一条失败并返回 0 尺寸。"""
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try:
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width, height, rows, channels = decode_png(png_path)
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except (PngError, OSError, zlib.error) as error:
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report.add(3, False, f"读不出 {png_path}:{error}")
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return 0, 0, None
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pixels = width * height
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report.add(3, pixels > 0, f"{width}x{height} = {pixels} 像素")
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return (width, height, measure(width, height, rows, channels)) if pixels > 0 else (width, height, None)
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def judge_evidence(log_path: Path, png_path: Path) -> Report:
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"""正例口径:这份日志 + 这张 PNG 能不能当「GPU 档真的出了这一帧」的证据。"""
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report = Report()
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try:
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text = read_log(log_path)
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except OSError as error:
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report.add(1, False, f"日志读不出 {log_path}:{error}")
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return report
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renderers = list(dict.fromkeys(shot_renderers(text)))
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# 「这张图是 wgpu 出的」= 日志里**每一行** `[shot] … renderer=` 都说 wgpu。用 `in` 就退化成
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# 「曾经出现过」:把 CPU 那次的 stderr `>>` 追加进来、配 CPU 那张图,会静默判绿(M249 r1 P2-2)。
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report.add(
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1,
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set(renderers) == {"wgpu"},
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"实际 renderer=" + "/".join(renderers) if renderers else "日志里没有 `[shot] … renderer=…` 行(没走到出图那一步?)",
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)
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adapter = selected_adapter(text)
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if adapter is None:
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report.add(2, False, "日志里没有 `Selected: AdapterInfo { … }`(wgpu 没建成设备,或只打印了 Available adapters)")
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else:
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device_type = adapter["device_type"]
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# `None` = 字段不在 `{` 同一行(多行 Debug 漂移)或字段缺失:按取不到即失败处理,
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# 宁可假红也不许「格式一变就静默给绿」。
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report.add(
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2,
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device_type not in (None, "?") and device_type not in DISALLOWED_DEVICE_TYPES,
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f'device_type={device_type}({adapter["name"]} / {adapter["backend"]})'
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if device_type not in (None, "?")
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else "取不到 device_type:`Selected: AdapterInfo {` 与字段不在同一行(多行 Debug),或字段缺失",
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)
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width, height, stats = decode_shot(png_path, report)
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size = shot_size(text)
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if size is None:
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report.add(4, False, "日志里没有 `[shot] WxH …` 出图行,尺寸无从对账")
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elif width == 0:
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report.add(4, False, f"PNG 没解出来,无法核对日志声明的 {size[0]}x{size[1]}")
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else:
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report.add(4, (width, height) == size, f"日志 {size[0]}x{size[1]} vs PNG {width}x{height}")
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final = backend_final(text)
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if final is None:
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report.add(5, False, "日志里没有 `[backend] final=…` 行(ULL_ACCEPTANCE=1 才有)")
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else:
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report.add(
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5,
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final["final"] == "wgpu" and final["result"] == "started",
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f"final={final['final']} result={final['result']}" + (f" via={final['via']}" if final["via"] else ""),
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)
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if stats is None:
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report.add(6, False, "上一步没解出像素,无从统计")
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else:
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blank = verdict(stats, DEFAULT_MIN_UNIQUE, DEFAULT_MIN_STDDEV, DEFAULT_MIN_EDGE_RATIO)
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report.add(
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6,
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not blank,
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f"唯一色 {stats['unique_colors']} 亮度σ {stats['luma_stddev']} 强边缘 {stats['edge_ratio']}",
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)
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return report
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def judge_refuse(log_path: Path, png_path: Path | None) -> Report:
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"""负例口径:这次启动是不是**确实拒绝**降级出图(而不是悄悄换后端出了一张)。"""
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report = Report()
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try:
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text = read_log(log_path)
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except OSError as error:
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report.add(7, False, f"日志读不出 {log_path}:{error}")
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return report
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final = backend_final(text)
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if final is None:
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report.add(7, False, "日志里没有 `[backend] final=…` 行")
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else:
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report.add(7, final["via"] == "refuse", f"final={final['final']} result={final['result']} via={final['via'] or '<缺>'}")
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renderers = list(dict.fromkeys(shot_renderers(text)))
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size = shot_size(text)
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surplus = (["renderer=" + "/".join(renderers)] if renderers else []) + (
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[f"[shot] {size[0]}x{size[1]}"] if size is not None else []
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)
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report.add(8, not surplus, "存在出图行:" + "、".join(surplus) if surplus else "")
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if png_path is None:
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return report
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if png_path.exists():
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report.add(9, False, f"{png_path} 存在({png_path.stat().st_size} 字节)")
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else:
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report.add(9, True, f"{png_path} 不存在")
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return report
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def main(argv: list[str]) -> int:
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args = list(argv)
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positional: list[str] = []
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expect_refuse = False
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while args:
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arg = args.pop(0)
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if arg == "--expect-refuse":
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expect_refuse = True
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elif arg == "--self-test":
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sys.path.insert(0, str(Path(__file__).resolve().parent / "tests"))
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from gpu_shot_selftest import run_selftest # 延迟 import:脚手架反过来要拿本模块的判据函数
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return run_selftest(judge_evidence, judge_refuse)
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elif arg in ("-h", "--help"):
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print(__doc__)
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return 0
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elif arg.startswith("-"):
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print(f"::error::不认识的参数:{arg}", file=sys.stderr)
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return 2
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else:
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positional.append(arg)
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if not positional:
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print("::error::至少要给一份 stderr 日志(--help 看用法)", file=sys.stderr)
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return 2
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if len(positional) > 2:
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print(f"::error::最多两个位置参数(日志 + PNG),实际 {len(positional)} 个", file=sys.stderr)
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return 2
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log_path = Path(positional[0])
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png_path = Path(positional[1]) if len(positional) == 2 else None
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if png_path is None and not expect_refuse:
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print("::error::正例必须给出那张 PNG(只有负例可用 --expect-refuse 省略)", file=sys.stderr)
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return 2
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report = judge_refuse(log_path, png_path) if expect_refuse else judge_evidence(log_path, png_path)
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report.print_report(log_path, png_path)
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return 1 if report.problems() else 0
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# ────────────────────────── 自测 ──────────────────────────
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#
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# 向量数据在 `packaging/tests/gpu_shot_vectors.json`,造样本与逐条比对的脚手架在
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# `packaging/tests/gpu_shot_selftest.py`(判据脚本自己守 ≤400 行,脚手架不占这里的行数)。
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# 每条的 `expect_fail` 是**期望的失败判据清单**,逐条对:关掉一条判据、或让某条判据被别的
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# 东西掩盖,清单就对不上。真图不在仓库里(`DevDocs/` 被 ignore),所以这颗钉子守判据,真实
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# 产物由报告里的实跑退出码守。
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if __name__ == "__main__":
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for stream in (sys.stdout, sys.stderr):
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if hasattr(stream, "reconfigure"):
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stream.reconfigure(errors="backslashreplace")
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sys.exit(main(sys.argv[1:]))
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