{"id":75813,"date":"2020-03-28T19:42:24","date_gmt":"2020-03-28T17:42:24","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/collabora-razvivaet-nadstrojku-dlya-raboty-opencl-i-opengl-poverh-directx"},"modified":"2020-03-28T19:42:24","modified_gmt":"2020-03-28T17:42:24","slug":"collabora-razvivaet-nadstrojku-dlya-raboty-opencl-i-opengl-poverh-directx","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/collabora-razvivaet-nadstrojku-dlya-raboty-opencl-i-opengl-poverh-directx","title":{"rendered":"Collabora sta sviluppando un'estensione per il funzionamento di OpenCL e OpenGL sopra DirectX","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Collabora ha presentato<\/a><\/noindex> nuovo driver Gallium per Mesa che implementa uno strato per far funzionare le API OpenCL 1.2 e OpenGL 3.3 sopra i driver con supporto DirectX 12 (D3D12). Codice pubblicato<\/a><\/noindex> sotto licenza MIT.<\/p>\n

Il driver proposto consente l'uso di Mesa su dispositivi che inizialmente non supportano OpenCL e OpenGL, fungendo anche da punto di partenza per il porting di applicazioni OpenGL\/OpenCL per funzionare su D3D12. Per i produttori di GPU, il sottosistema offre la possibilit\u00e0 di fornire supporto per OpenCL e OpenGL, avendo solo driver con supporto D3D12. <\/p>\n

Tra i prossimi obiettivi c'\u00e8 il completamento dei test di compatibilit\u00e0 per OpenCL 1.2 e OpenGL 3.3, la verifica della compatibilit\u00e0 con le applicazioni e l'inclusione delle innovazioni nel core di Mesa. Lo sviluppo avviene in collaborazione con ingegneri Microsoft che stanno sviluppando aperto<\/a><\/noindex> strumentazione D3D11On12<\/a><\/noindex> per convertire i giochi da D3D11 a D3D12 e la libreria D3D12TranslationLayer<\/a><\/noindex>, che implementa primitive grafiche standard sopra D3D12. <\/p>\n

L'implementazione include il driver Gallium, il compilatore OpenCL, il runtime OpenCL e il compilatore di shader NIR-to-DXIL, che trasforma la rappresentazione intermedia degli shader NIR utilizzata in Mesa nel formato binario DXIL (DirectX Intermediate Language), supportato in DirectX 12 e basato su LLVM 3.7.DirectX Shader Compiler<\/a><\/noindex> di Microsoft, fondamentalmente un fork avanzato di LLVM 3.7). Il compilatore OpenCL \u00e8 stato sviluppato sulla base delle risorse del progetto LLVM e degli strumenti. SPIRV-LLVM<\/a><\/noindex>.<\/p>\n

I codici sorgente con estensioni OpenCL vengono compilati utilizzando clang in un pseudocodice intermedio LLVM (LLVM IR), che viene poi trasformato in una rappresentazione intermedia dei kernel OpenCL nel formato SPIR-V. I kernel nella rappresentazione SPIR-V vengono inviati a Mesa, traslati nel formato NIR, ottimizzati e inviati a NIR-to-DXIL per generare shader computazionali nel formato DXIL, idonei per l'esecuzione sulla GPU utilizzando un runtime basato su DirectX 12.
\nInvece di Clover, utilizzata nell'implementazione OpenCL di Mesa, \u00e8 stato proposto un nuovo runtime OpenCL che consente pi\u00f9 trasformazioni dirette nell'API DirectX 12.<\/p>\n

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

I driver OpenCL e OpenGL sono stati preparati utilizzando l'interfaccia Gallium fornita in Mesa, che consente la creazione di driver senza approfondire i dettagli specifici di OpenGL e di tradurre le chiamate OpenGL in entit\u00e0 pi\u00f9 vicine ai primitivi grafici utilizzati dalle moderne GPU. Il driver Gallium riceve i comandi OpenGL e, coinvolgendo il traduttore NIR-to-DXIL,
\nforma i buffer di comandi che vengono eseguiti sulla GPU utilizzando il driver D3D12.<\/p>\n

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

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

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Il codice \u00e8 stato pubblicato sotto licenza MIT. 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