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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
So I think for loose .PNG textures, you need to use QuakeSpasm-Spiked. DarkPlaces may work with .PNGs as well. Regular Qspsm does support external textures, but only in .TGA format and only for BSP entities.
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