DirectStorage

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%%{init: {'theme': 'base', 'themeVariables': { 'primaryColor': '#ffffff', 'nodeBorder':'#000000', 'clusterBorder':'#000000'}}}%%
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flowchart LR
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subgraph SSD
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%%SSDSourceUncompressed[("Source\n(uncompressed)")]
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%%SSDSourceCustomCompressed[("Source\n(custom compressed)")]
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SSDSourceCompressed[("Source\n(compressed)")]
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end
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subgraph SystemMemory
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 StagingBuffer[Staging Buffer]
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 SysMemDestination[[Destination]]
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 UploadHeap[Upload Heap]
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end
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subgraph VRAM
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 VRAMDestination[[Destination]]
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 InputStaging[Input Staging Buffer]
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 OutputStaging[Output Staging Buffer]
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end
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%% Uncompressed
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%%SSDSourceUncompressed --IOP--> StagingBuffer -- memcpy --> SysMemDestination
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%%SSDSourceUncompressed --IOP--> UploadHeap -- GPUCopy ---> VRAMDestination
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%% Custom Compressed
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%%SSDSourceCustomCompressed --IOP--> StagingBuffer -- Decompress --> SysMemDestination
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%%StagingBuffer -- Decompress --> UploadHeap -- GPUCopy ---> VRAMDestination
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%% Compressed
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StagingBuffer -- "Decompress" --> SysMemDestination
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SSDSourceCompressed --IOP--> StagingBuffer
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SSDSourceCompressed --IOP--> UploadHeap -- GPUCopy ---> InputStaging -- Decompress --> OutputStaging -- GPUCopy --> VRAMDestination
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