加载gltf/glb报错

[constly]

我从这里sketchfab分别下载了gltf 和 glb 文件放到 pkg/ant.test.simple/resource 下面，均加载报错，加载代码为:

local prefab = world:create_instance {
	prefab = "/pkg/ant.test.simple/resource/girl_0002/girl_0002.glb|mesh.prefab",
       --prefab = "/pkg/ant.test.simple/resource/girl_0001/scene.gltf|mesh.prefab",
}

glb报错为:

[2024-02-05 17:44:28.68][INFO ]( io )(...gine/pkg/ant.compile_resource/model/export_animation.lua:16) animation compile:
[2024-02-05 17:44:28.68][INFO ]( io )(G:/ant/ant_engine/pkg/ant.compile_resource/subprocess.lua:67) G:/ant/ant_engine/bin/msvc/release/gltf2ozz.exe --file=G:/ant/ant_engine/test/simple/pkg/ant.test.simple/resource/girl_0002/girl_0002.glb --config_file=G:/ant/ant_engine/pkg/ant.compile_resource/model/gltf2ozz.json
[2024-02-05 17:44:28.83][ERROR]( ant.window|world )assertion failed!
stack traceback:
        ( service:6 )
        [C]: in function 'assert'
        ...gine/pkg/ant.compile_resource/model/export_animation.lua:36: in upvalue 'export_animation'
        G:/ant/ant_engine/pkg/ant.compile_resource/model/glb.lua:62: in field '?'
        G:/ant/ant_engine/pkg/ant.compile_resource/main.lua:56: in function <G:/ant/ant_engine/pkg/ant.compile_resource/main.lua:46>
        (...tail calls...)
        engine/game/io.lua:62: in upvalue 'getresource'
        engine/game/io.lua:82: in upvalue 'getfile'
        engine/game/io.lua:91: in local 's'
        [string "    -- IO thread..."]:10: in main chunk
        ( service:2 )
        G:/ant/ant_engine/pkg/ant.io/main.lua:7: in upvalue 'readall'
        G:/ant/ant_engine/pkg/ant.io/main.lua:12: in field 'readall'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:187: in upvalue 'create_template'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:225: in upvalue 'prefab_instance'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:257: in method '_flush_instance_queue'
        G:/ant/ant_engine/pkg/ant.ecs/entity_system.lua:71: in local 'f'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:389: in function <G:/ant/ant_engine/pkg/ant.ecs/main.lua:384>
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:573: in upvalue 'system_changed'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:579: in method 'pipeline_init'
        G:/ant/ant_engine/pkg/ant.window/world_instance.lua:77: in upvalue 'f'

gltf报错为：

[2024-02-05 19:09:23.18][ERROR]( ant.window|world )not support base64 format
stack traceback:
        ( service:6 )
        [C]: in function 'error'
        ...ngine/pkg/ant.compile_resource/model/export_material.lua:146: in upvalue 'export_image'
        ...ngine/pkg/ant.compile_resource/model/export_material.lua:241: in upvalue 'build_texture_file'
        ...ngine/pkg/ant.compile_resource/model/export_material.lua:264: in local 'handle_texture'
        ...ngine/pkg/ant.compile_resource/model/export_material.lua:295: in upvalue 'export_material'
        G:/ant/ant_engine/pkg/ant.compile_resource/model/glb.lua:61: in field '?'
        G:/ant/ant_engine/pkg/ant.compile_resource/main.lua:56: in function <G:/ant/ant_engine/pkg/ant.compile_resource/main.lua:46>
        (...tail calls...)
        engine/game/io.lua:62: in upvalue 'getresource'
        engine/game/io.lua:82: in upvalue 'getfile'
        engine/game/io.lua:91: in local 's'
        ( service:2 )
        G:/ant/ant_engine/pkg/ant.io/main.lua:7: in upvalue 'readall'
        G:/ant/ant_engine/pkg/ant.io/main.lua:12: in field 'readall'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:187: in upvalue 'create_template'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:225: in upvalue 'prefab_instance'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:257: in method '_flush_instance_queue'
        G:/ant/ant_engine/pkg/ant.ecs/entity_system.lua:71: in local 'f'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:389: in function <G:/ant/ant_engine/pkg/ant.ecs/main.lua:384>
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:573: in upvalue 'system_changed'
        G:/ant/ant_engine/pkg/ant.ecs/main.lua:579: in method 'pipeline_init'
        G:/ant/ant_engine/pkg/ant.window/world_instance.lua:77: in upvalue 'f'

请问正确加载姿势是什么样的呢~ 需要有工具对他们进行预处理吗

[cloudwu]

前一个好像是调用 ozz 自带的转换工具失败？要么试试 ozz 官方仓库编译出来的工具能不能处理？明天我也看看。

如果官方工具也有问题，那么需要修一下，可能需要给 ozz 提个 pr 。

后面那个 gltf 支持是最近加的，部份格式支持不好，需要完善。或许要加个内嵌 base64 数据块的解码函数？

[cloudwu]

我们游戏开发一般使用的是 blender ，它导出的 glb/gltf 没什么问题。

我们应该多测试一下其它工具输出的文件。

[constly]

我看最新版已经可以正常加载了，感谢~