pub fn pipeline_cache_dir() -> Option<PathBuf>Expand description
Directory the renderer persists driver pipeline blobs to (a serialized
VkPipelineCache, a D3D12 pipeline library), keyed per adapter. Unlike
shader_cache_dir artifacts these are machine code tied to one GPU and
driver, so they resolve under the writable-state dir only and never ship in
a bundle. A sibling of shader-cache/ rather than a subdirectory, since the
shader cache prunes its directory by age and would reclaim these.