{"id":35860,"date":"2019-10-31T22:07:13","date_gmt":"2019-10-31T19:07:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kompaniya-valve-otkryla-novyj-kompilyator-shejderov-dlya-gpu-amd\/"},"modified":"2019-10-31T22:07:13","modified_gmt":"2019-10-31T19:07:13","slug":"kompaniya-valve-otkryla-novyj-kompilyator-shejderov-dlya-gpu-amd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/kompaniya-valve-otkryla-novyj-kompilyator-shejderov-dlya-gpu-amd","title":{"rendered":"La compagnia Valve ha lanciato un nuovo compilatore di shader per GPU AMD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Azienda Valve ha proposto<\/a><\/noindex> una nuova compilatore di shader nella mailing list degli sviluppatori di Mesa ACO<\/a><\/noindex> per il driver Vulkan RADV, posizionato<\/a><\/noindex> come alternativa al compilatore di shader di AMDGPU, utilizzato nei driver OpenGL e Vulkan RadeonSI e RADV per le schede grafiche AMD.
\nUna volta completati i test e le migliorie, ACO \u00e8 previsto per l'inclusione nel core di Mesa.<\/p>\n

Il codice proposto da Valve mira a garantire la generazione di codice ottimale possibile per gli shader delle applicazioni di gioco, nonch\u00e9 a raggiungere una velocit\u00e0 di compilazione molto elevata. L'attuale compilatore di shader di Mesa utilizza componenti LLVM, che non consentono di ottenere la velocit\u00e0 di compilazione desiderata e non permettono un controllo completo del flusso di controllo, causando in passato problemi significativi. Inoltre, allontanandosi da LLVM \u00e8 possibile implementare un'analisi pi\u00f9 aggressiva delle discrepanze e gestire pi\u00f9 finemente il carico sui registri, permettendo di generare file eseguibili pi\u00f9 efficienti.<\/p>\n

ACO \u00e8 scritto in C++ ed \u00e8 progettato con un occhio all'applicazione per la compilazione JIT, utilizzando strutture dati veloci per la scansione e evitando strutture basate su puntatori come le liste collegate e le catene def-use. La rappresentazione intermedia del codice si basa interamente su SSA<\/a><\/noindex> (Static Single Assignment) e consente la distribuzione dei registri, calcolando esattamente in anticipo quale registro utilizzare in base allo shader.<\/p>\n

Attualmente sono supportati solo shader pixel (frammento) e shader computazionali su GPU AMD discrete (dGPU VI+). Tuttavia, ACO compila correttamente shader per tutti i giochi testati, inclusi shader complessi da giochi come Shadow of the Tomb Raider e Wolfenstein II. Il prototipo di ACO proposto per i test supera quasi di due volte il compilatore shader AMDGPU in velocit\u00e0 di compilazione e mostra un incremento del FPS in alcuni giochi quando eseguiti su sistemi con il driver RADV. <\/p>\n

\"La<\/a><\/noindex><\/center>
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\"La<\/a><\/noindex><\/center><\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Valve \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b\u0430 \u0432 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 Mesa \u043d\u043e\u0432\u044b\u0439 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 \u0448\u0435\u0439\u0434\u0435\u0440\u043e\u0432 ACO \u0434\u043b\u044f Vulkan-\u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430 RADV, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c\u044b\u0439 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u044b \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u0443 \u0448\u0435\u0439\u0434\u0435\u0440\u043e\u0432 \u0438\u0437 AMDGPU, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u043c\u0443 \u0432 OpenGL- \u0438 Vulkan-\u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430\u0445 RadeonSI \u0438 RADV \u0434\u043b\u044f \u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0447\u0438\u043f\u043e\u0432 AMD. \u041f\u043e\u0441\u043b\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u0434\u043e\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438, ACO \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u0442\u044c \u0434\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0441\u043e\u0441\u0442\u0430\u0432 Mesa. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0439 Valve \u043a\u043e\u0434 \u043d\u0430\u0446\u0435\u043b\u0435\u043d \u043d\u0430 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