New: Added support for multithreading in forked processes. This also adds declspec guid -fms-extensions for build error. New: Build ShaderConductor for Linux Script now uses v16 Clang 9.0.1, and works around incorrect llvm-tblgen location. New: Enabled ssse3 by default for Linux x86. Source snapshot for SDL 2.0 (Updated Wed Apr 29, 2020) . Also we removed Epic opengl and emscriptem changes. Bug Fix: Fixed focus issue where Windows with never activate policy were being set to active. Bug Fix: Fixed submenus closing causing main context to close. Bug Fix: Fixed BC6H/BC7 texture formats not being available for Linux. Bug Fix: Honor UE4's Mono-build environment using Build.sh . Bug Fix: Update translucent rendering fix to use BeginRenderingTranslucency. Bug Fix: For Linux Vulkan, fixed amdgpu mesa crash where drawinstance call is outside render pass enabling shader complexity view. Bug Fix: Added error messagebox when vkGetPhysicalDeviceSurfaceSupportKHR fails (no present support). This fixes assert when getting shader stats (called from FShaderCookerStats::Initialize). Bug Fix: Added SP_OPENGL_SM4_REMOVED to IsDeprecatedShaderPlatform(). Bug Fix: UE no longer hard codes c14 in LinuxToolchain as the default c standard. Bug Fix: For Unix, fixed FUnixPlatformMemory::GetStats() that always returned 0 when memory was over 10.24gigs. Call RemoveAll on FilterCollection->GetSourceFilters updated in PreExit instead of global dtor when many objects / modules have been shut down. Bug Fix: Fixed SegFault in source filtering and notification manager when closing QAGame Clear RegionalLists at pre-exit instead of during global dtor when many objects / modules have been freed. Bug Fix: Updated README.md for Linux build. Bug Fix: Implemented GetWindowUnderCursor for Unix Platform. New: Lld linker is now supported with Clang v9 and above. 
New: Added the No Relative Mouse Mode command-line option to support remote VNC.New: Building with a -gbd-index with Clang v9 or above now cuts symbol loading time by more than half (45 seconds to 17 seconds).Bug Fix: Resolved an issue with Linux with the SegFault in source filtering and notification manager when closing QAGame Clear Regional Lists at the pre-exit instead of during the global dtor.UnrealBuildTool - Bug Fix: Fixed retry in Linux when linking batch files.Core - New: Removed unnecessary target dependencies for ShaderCompileWorker on Linux.Automation - Bug Fix: Fixed Linux packaging failure resulting from Lumin key being copied locally into Gauntlet.We've rounded up the other Linux specific fixes for you here: YouTube videos require cookies, you must accept their cookies to view.
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