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b219638e29
Enables globe-browsing data to be cached using caching mrf's as it is loaded from the original dataset. Subsequent reads of tiles that have been cached do not query the original dataset but picks it up from the mrf data.
Supports anything that can be used a dataset for a gdal raster but raw images such as JPGs are explicitly disallowed as they lack necessary geotransform data.
Activated on a global scale by setting the following keys in openspace.cfg (ModuleConfigurations/GlobeBrowsing)
MRFCacheEnabled = true,
MRFCacheLocation = "<somepath>",
Settings can be overriden on a per-layer basis by adding the following entries to the layer entity of an asset
CacheSettings = { Enabled = true, Compression = "LERC", BlockSize = 512, Quality=25 },
The following per-layer settings are available and override the global module settings:
Enabled : enable/disable caching for this layer.
Compression: The compression algorithm to use for tile cache storage. (JPEG, PNG, or LERC)
BlockSize: Size of tiles in cache, should be a multiple of 2 although this is not required.
Quality: The quality setting of the JPEG compression (when used)
Note that heightlayers must use LERC compresison and this is the default unless overridden by a layer.