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Building a 3D game from a flat drawing with no 3D experience

The author breaks down a clip reposted by OpenAI Devs: Tripo made the model, Astra guided the setup, Smart Mesh cut 1.8M faces to 6,482, and Tripo Auto Rig added the skeleton.

Morteza
@MortezabihzadehArchived 2026.09.24Originally posted 2026.09.23

What this article says

这是一篇流程复盘文章,回答「被 OpenAI Devs 转发的那段 3D 游戏演示是怎么做出来的」。作者强调自己完全没有 3D 经验,起点只是一张平面手绘图。整条链路分四步:先用 Tripo 从平面图生成 3D 模型;再由 GPT-6 Astra 全程指导环境搭建与后续步骤,充当技术顾问而非直接产出资产;然后用 Smart Mesh 做减面优化,把 180 万面压到 6482 面,让模型能在游戏引擎里实际跑起来;最后用 Tripo Auto Rig 自动补上骨骼,使角色可以动。文章的结论是:现在做 3D 游戏的门槛主要不在建模技能,而在于会不会拆解任务、会不会把生成工具和 AI 助手串成一条流水线。对读者的价值在于它给出了一条可复制的工具组合,而不是单纯展示成品。

Made a 3D game from a flat drawing with no 3D experience

@OpenAIDevs reposted the clip then everyone asked how

→ Tripo made the 3D model → Astra guided the setup → Smart Mesh: 1.8M faces down to 6,482 faces → Tripo Auto Rig added the skeleton https://x.com/i/article/2101676644121317376

Morteza @MortezabihzadehOriginally posted 2026.09.23
Open original on X
x.com/mortezabihzadeh/status/2102719520699830417Archived 2026.09.24 10:19