tim doerries 838de94380 New streaming system for SparseVolumeTextures. It is based on the Nanite FStreamingManager design and supports streaming both from disk and from DDC. This first version uses a single logical tile data texture for all frames of a single UStreamableSparseVolumeTexture and starts streaming out tiles of older mip levels once it runs out of space. The highest mip level (lowest resolution) is always resident in the tile data texture, so there is always something available for rendering. Each frame's page table texture is currently always fully resident. There is now also a buffer storing the lowest resident mip level index for each frame. ...

In a future version, additional logical tile data textures may be allocated to handle cases where more mip levels are being requested than can physically fit into a single texture. In addition, page table textures should also be resized so that streamed out frames take up less GPU memory. It might also be necessary to implement a blocking streaming option for MRQ and similar use cases. This feature probably depends on being able to spill to additional physical page table textures.

Also moved all of the SVT runtime classes into a shared namespace (UE::SVT), which is why this CL ended up touching almost all SVT related files.

#rb Sebastien.Hillaire, Rune.Stubbe, Devon.Penney, Patrick.Kelly
#rnx
#preflight 64772ef20d55081f54759f0b

[CL 25699866 by tim doerries in ue5-main branch]

2023-05-31 08:14:22 -04:00

..

Private

New streaming system for SparseVolumeTextures. It is based on the Nanite FStreamingManager design and supports streaming both from disk and from DDC. This first version uses a single logical tile data texture for all frames of a single UStreamableSparseVolumeTexture and starts streaming out tiles of older mip levels once it runs out of space. The highest mip level (lowest resolution) is always resident in the tile data texture, so there is always something available for rendering. Each frame's page table texture is currently always fully resident. There is now also a buffer storing the lowest resident mip level index for each frame.

2023-05-31 08:14:22 -04:00

Public

Converted SparseVolumeTextures from AssetTypeActions to AssetDefinition.

2023-02-22 07:58:57 -05:00

SparseVolumeTexture.Build.cs

Removed redundant module includes.

2023-05-11 16:48:21 -04:00