e223be2571
实测链路（全绿）： 1. 官方 ProGuard 映射 → SRG → SpecialSource 重映射 → client-named.jar 2. 反编译确认 MC 渲染器挂在 Minecraft 单例上，不能独立 new 3. 权威序列：tryDetectVersion → Bootstrap → RenderSystem → new Minecraft(cfg) 4. 渲 3 帧 + glReadPixels → PNG，画面是 Mojang 加载屏（真渲染，非清屏） 三个坑（实测证据）： - 漏 tryDetectVersion → Game version not set - FolderData 参数顺序错 → icons/ 404 - assetIndex 用 id(5) 而非落盘名(1.20.1) → 资源全找不到 下一步：ClientLevel 构造只需 listener.registryAccess()， ClientChunkCache.replaceWithPacketData 接收 map_chunk 原始字节 （与 chunk.py 同格式）⇒ 这就是数据喂渲染器的落点。
92 lines
4.4 KiB
Java
92 lines
4.4 KiB
Java
import com.mojang.blaze3d.platform.DisplayData;
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import com.mojang.blaze3d.systems.RenderSystem;
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import com.mojang.authlib.properties.PropertyMap;
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import net.minecraft.SharedConstants;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.User;
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import net.minecraft.client.main.GameConfig;
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import net.minecraft.server.Bootstrap;
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import java.io.File;
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import java.net.Proxy;
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import java.util.OptionalInt;
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/**
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* mcfold scaffold —— 只起 MC 的**渲染栈**，不进游戏主循环。
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*
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* 依据（反编译 net.minecraft.client.main.Main 的实测序列）：
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* Bootstrap.bootStrap()
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* RenderSystem.initRenderThread(); beginInitialization();
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* new Minecraft(gameConfig) ← 构造即完成 GL/资源/渲染器初始化
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* RenderSystem.finishInitialization()
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* 之后 Main 才起 Game thread 跑主循环 —— 我们**不**走那步。
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*/
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public class Scaffold {
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public static void main(String[] args) throws Exception {
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String gameDir = arg(args, "--gameDir", "/home/newqqagent/mcview/instances/default");
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String assets = arg(args, "--assets", "/home/newqqagent/mcview/store/vanilla-1.20.1/assets");
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// ★ 索引名必须是 assets/indexes/<name>.json 中真实存在的那个。
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// version.json 的 assetIndex.id 是 "5"，但 MCLC 落盘用 version.number（1.20.1）
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// —— 传 "5" 会导致索引加载失败，所有资源/icons 全部找不到（实测踩过）。
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String assetIdx = arg(args, "--assetIndex", "1.20.1");
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int width = Integer.parseInt(arg(args, "--width", "1280"));
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int height = Integer.parseInt(arg(args, "--height", "720"));
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System.out.println("[scaffold] bootstrap...");
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// ★ 官方 Main 的实测序列：tryDetectVersion 必须在 bootStrap 之前，
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// 否则 DataFixers.<clinit> 抛 "Game version not set"
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SharedConstants.tryDetectVersion();
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SharedConstants.enableDataFixerOptimizations();
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Bootstrap.bootStrap();
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System.out.println("[scaffold] bootstrap ok, mcVersion=" + SharedConstants.getCurrentVersion().getName());
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File runDir = new File(gameDir);
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File assetsDir = new File(assets);
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User user = new User("mcfold_cam", "0".repeat(32), "mcfold_cam",
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java.util.Optional.empty(), java.util.Optional.empty(), User.Type.LEGACY);
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PropertyMap props = new PropertyMap();
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GameConfig cfg = new GameConfig(
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new GameConfig.UserData(user, props, props, Proxy.NO_PROXY),
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new DisplayData(width, height, OptionalInt.empty(), OptionalInt.empty(), false),
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new GameConfig.FolderData(
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// ★ 顺序是 (gameDirectory, resourcePackDirectory, assetDirectory, assetIndex)
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// 反着写会把 assets 当游戏目录，导致资源全找不到（实测踩过：icons/icon_16x16.png 404）
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runDir, new File(runDir, "resourcepacks"), assetsDir, assetIdx),
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new GameConfig.GameData(
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false, // demo
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"mcfold", // version
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"release", // versionType
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false, // disableMultiplayer
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false), // disableChat
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new GameConfig.QuickPlayData(null, null, null, null)
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);
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System.out.println("[scaffold] RenderSystem init...");
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RenderSystem.initRenderThread();
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RenderSystem.beginInitialization();
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System.out.println("[scaffold] new Minecraft(cfg) ...");
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Minecraft mc = new Minecraft(cfg);
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RenderSystem.finishInitialization();
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System.out.println("[scaffold] OK Minecraft constructed");
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// 检查渲染栈关键对象是否就绪（不启主循环）
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System.out.println("[scaffold] window=" + mc.getWindow().getWidth() + "x" + mc.getWindow().getHeight());
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System.out.println("[scaffold] levelRenderer=" + (mc.levelRenderer != null ? "present" : "null"));
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System.out.println("[scaffold] gameRenderer=" + (mc.gameRenderer != null ? "present" : "null"));
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System.out.println("[scaffold] level=" + (mc.level != null ? "present" : "null (не connected)"));
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System.out.println("[scaffold] DONE (no main loop)");
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}
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private static String arg(String[] a, String key, String def) {
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for (int i = 0; i < a.length - 1; i++)
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if (a[i].equals(key)) return a[i + 1];
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return def;
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}
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}
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