Diky za upresneni. Ja jsem to pochopil tak, ze ta pomalost je nejen kvuli gem ale i diky diky exa, proto ta snaha o vytvoreni uxa. Nicmene ta zpravicka uzce souvisi s aktivitami ohledne dri-gem branche a bude to asi jeste nejakou dobu trvat, nez se to dostane do mainstreamu.
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started UXA by just copying the existing EXA code and running an edit script to change all of the names. Then, I went through the code and removed everything dealing with pixmap migration, damage computation or explicit global hardware synchronization. The only synchronization primitive left is the prepare_access/finish_access pair which signals the start and end of software drawing. The hardware driver is expected to deal with all other synchronization issues itself.
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