Three scene optimization (texture size calculation in gpu,compression, merge meshes, what the limits ?)

The texture-compressor tool is for KTX v1, which is older and more difficult to use on the web.

Instead I would suggest KTX v2 (which supports smaller Basis formats). You can convert textures using the CLI, C++, or WASM libraries found on GitHub - KhronosGroup/KTX-Software: KTX (Khronos Texture) Library and Tools. The toktx CLI command is easiest. Or the other tools listed in the comments above.

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