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Release 1.21.5

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# Cemu detailed changelog for 1.21.5
# Patreon release date: 2020-10-30
# Public release date:  2020-11-06

general: Added a new CPU mode option called 'Auto' (#222)
         When selected it will use Single/Dual/Triple-Core recompiler depending on the number of physical cores on the host system
         1-2 cores -> Single-Core recompiler
         3-4 cores -> Dual-Core recompiler
         5+        -> Triple-Core recompiler
         If the CPU mode was not previously set then Cemu will default to 'Auto' (earlier Cemu versions defaulted to singlecore-recompiler)

general: Added an option to open the compatibility wiki page for a title when right clicking it in the game list

debugging: Improvements to the PPC thread viewer window. It will now show export names for PC if the address is inside one of Cemu's HLE exports

coreinit: Correctly initialize the id field in OSThread
          Fixes a softlock in Warriors Orochi 3 v32 (#51)

OpenGL/Vulkan: Shader decompiler now supports textureSize() on 2D_MSAA surfaces
               Used by Pac-Man and the Ghostly Adventures 2

Vulkan: Resolved a race condition related to occlusion queries that could cause the renderer to deadlock
        Fixes Devil's Third softlocking

Vulkan: Flush GPU buffer cache on frame swap for games that require it due to insufficient cache invalidation
        Fixes polygon explosions in Pac-Man and the Ghostly Adventures 1 & 2

AX: Implemented AXGetDeviceFinalOutput()
    Used by Warriors Orochi 3 v32

(#xx) refers to resolved bug tracker issues. See

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