{"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\/sv\/blog\/news\/sistema-trassirovki-luchej-realizovannaya-na-yazyke-sql","title":{"rendered":"Ray tracing-system implementerat i SQL","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Aleksej Milovidov, medgrundare av databasen ClickHouse, har i samarbete med AI-assistenten Claude publicerat ett ray tracing-system som helt och h\u00e5llet \u00e4r implementerat i SQL. Renderingen med ljussimulering baserat p\u00e5 ray tracing har genomf\u00f6rts som en enda SQL-fr\u00e5ga utan anv\u00e4ndardefinierade funktioner (UDF) och utan att ansluta extern kod. F\u00f6r att visa grafiken anv\u00e4nds databassystemets ClickHouse funktion att spara fr\u00e5geresultat i PNG-format. Projektet fungerar fullt ut n\u00e4r det k\u00f6rs i databassystemet ClickHouse, men med vissa fel och kan vara 33 g\u00e5nger l\u00e5ngsammare i databassystemet CedarDB. Projektet distribueras under en Creative Commons BY-NC-SA-licens.<\/p>\n

Varje pixel representerar en rad i en tabell, som har kolumner med koordinater (X, Y) och f\u00e4rgrepresentation (R, G, B). De matematiska operationer som beh\u00f6vs f\u00f6r 3D-ber\u00e4kningar bygger p\u00e5 tupler \u2014 en vektor kodas som Tuple(Float64, Float64, Float64).
\nLoopen f\u00f6r att simulera flera ljusreflektioner fr\u00e5n ytor har implementerats genom SQL-funktionen arrayFold och k\u00f6rs inom varje rad f\u00f6r att parallellisera renderingen. St\u00f6d f\u00f6r geometriska primitiva former som cylindrar, torus, sf\u00e4rer och orienterade parallelepipeder finns, d\u00e4r union och subtraktion (borttagning av snitt) utf\u00f6rs. Landskapet genereras matematiskt.<\/p>\n

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

Tidigare har utvecklarna av databassystemet ClickHouse f\u00f6rberett ett Doom-liknande spel skrivet i SQL, en RISC-V-emulator och en musiksyntetisator.
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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