{"id":182419,"date":"2026-07-02T02:48:03","date_gmt":"2026-07-02T00:48:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/sistema-trassirovki-luchej-realizovannaya-na-yazyke-sql"},"modified":"2026-07-02T02:48:03","modified_gmt":"2026-07-02T00:48:03","slug":"sistema-trassirovki-luchej-realizovannaya-na-yazyke-sql","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/sistema-trassirovki-luchej-realizovannaya-na-yazyke-sql","title":{"rendered":"Str\u00e5lesporing implementeret i SQL","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Alexey Milovidov, medstifter af databasesystemet ClickHouse, har i samarbejde med AI-assistenten Claude offentliggjort et ray tracing-system, helt implementeret i SQL. Rendering med belysningssimulering baseret p\u00e5 ray tracing er realiseret som en enkelt SQL-foresp\u00f8rgsel uden brugerdefinerede funktioner (UDF) og uden forbindelse til ekstern kode. For at generere grafik benytter systemet ClickHouse muligheden for at gemme resultatet af foresp\u00f8rgsler i PNG-format. Projektet fungerer fuldt ud, n\u00e5r det k\u00f8res i ClickHouse, men kan k\u00f8re 33 gange langsommere med enkelte fejl i CedarDB. Projektet distribueres under Creative Commons BY-NC-SA-licensen.<\/p>\n

Hvert pixel repr\u00e6senterer en r\u00e6kke i en tabel, hvor der er kolonner med koordinater (X, Y) og farvepr\u00e6sentation (R, G, B). De n\u00f8dvendige matematiske operationer til 3D-beregninger er bygget p\u00e5 tupler \u2014 en vektor kodes som Tuple(Float64, Float64, Float64).
\nEn cyklus til modelering af flere refleksioner af lys fra overflader er implementeret via SQL-funktionen arrayFold og udf\u00f8res inden for hver r\u00e6kke for at parallelisere rendering. Geometriske primitive underst\u00f8tter cylindre, torus, sf\u00e6rer og orienterede rektangul\u00e6re prikker, hvor operationer for union og forskel (fjernelse af sk\u00e6ringspunkter) udf\u00f8res. Landskabet genereres matematisk.<\/p>\n

<\/center><\/p>\n

Tidligere har udviklerne af databasesystemet ClickHouse forberedt en Doom-lignende spil skrevet i SQL, en RISC-V emulator og en musiksyntesizer.
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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