缓存

参考

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物理 ‣ 流体 ‣ 缓存

类型

域

The Cache panel is used to Bake the fluid simulation and stores the outcome of a simulation so it does not need to be recalculated.

Baking takes a lot of compute power (hence time). Depending on the scene, it is recommended to allocate enough time for the baking process.

如果网格有修改器，渲染设置会用于将网格数据导出到流体解算器内。根据设置的不同，计算时间和内存使用量可能会呈指数增长。例如，当使用带有 表面细分 的运动网格对象时，可以通过关闭或降低细分级别来减少模拟时间。当设置/绑定正确时，你总是可以通过提高设置来产生更逼真的模拟结果。

Note

Fluid simulations use their own cache. All other physics simulations make use of the General Baking operators.

缓存目录

Directory to store baked simulation files in. Inside this directory each simulation type (i.e. mesh, particles, noise) will have its own directory containing the simulation data.

类型

The type of the cache determines how the cache can be baked.

  • 重播

    The cache will be baked as the simulation is being played in the viewport.

    模块化

    The cache will be baked step by step: The bake operators for this type are spread across various panels within the domain settings (e.g. the bake tool for the mesh can be found in the Mesh panel).

    All

    The cache will be baked with a single tool. All selected settings will be considered during this bake. The bake tool for this type can be found in the Cache panel.

起始

Frame on which to start the simulation. This is the first frame that will be baked.

结束点

Frame on which to stop the simulation. This is the last frame that will be baked.

Note

The simulation is only calculated for positive frames between the Start and End frames of the Cache panel. So if you want a simulation that is longer than the default frame range you have to change the End frame.

Offset

Frame offset that is used when loading the simulation from the cache. It is not considered when baking the simulation, only when loading it.

Use Resumable Cache

Extra data will be saved so that you can resumed baking after pausing. Since more data will be written to drive it is recommended to avoid enabling this option when baking at high resolutions.

Volume File Format

File format for volume based simulation data (i.e. grids and particles).

  • Uni缓存

    Blender’s own caching format with some compression. Each simulation object is stored in its own .uni cache file.

    OpenVDB

    Advanced and efficient storage format. All simulation objects (i.e. grids and particles) are stored in a single .vdb file per frame.

Mesh File Format Liquids Only

File format for the mesh cache files.

  • 二进制对象

    Mesh data files with some compression.

    物体

    Simple, standard data format for mesh data.

Bake All, Free All

This option is only available when using the Final cache type. Bake All will run the simulation considering all parameters from the settings (i.e. it will bake all steps that can be baked individually with the Modular cache type at once).

The progress will be displayed in the status bar. Pressing Esc will abort the simulation.

Once the simulation has been baked, the cache can be deleted by pressing Free All. It is not possible to pause or resume a Bake All process as only the most essential cache files are stored on drive.

高级

Compression Volumes OpenVDB Only

Compression method that is used when writing OpenVDB cache files.

  • None

    Cache files will be written without any compression.

    Zip

    Cache files will be written with Zip compression. Effective but slower than Blosc.

    Blosc

    Cache files will be written with Blosc compression. Multithreaded compression, similar in size and quality to Zip compression.

Precision Volumes OpenVDB Only

Precision level that is used when writing OpenVDB cache files.

  • Full

    Volumetric data (e.g. grids, particles) will be written with full precision (32 bit).

    Half

    Volumetric data (e.g. grids, particles) will be written with half precision (16 bit).

    Mini

    Volumetric data (e.g. grids, particles) will be written with mini float precision (8 bit) where possible. For cache data where this is not possible, 16 bit will be used instead.

导出Mantaflow脚本

Export the simulation as a standalone Mantaflow script when baking the scene (exported on “Bake Data”). Usually, only developers and advanced users who know how to use the Mantaflow GUI will make use of this functionality. Use a Debug Value of 3001 to enable.