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# Cemu detailed changelog for 1.21.2 # Patreon release date: 2020-09-18 # Public release date: 2020-09-25 CPU/JIT: Added support for instructions STHUX and RLWIMI. Provides a minor performance boost in games that utilize these instructions (e.g. Sonic Boom) Vulkan/OpenGL: Added support for integer texture samplers Project Zero seems to be the only game that uses these but no obvious visual difference was observed Vulkan: Compilation of shader modules now uses multiple threads This gives a small speed boost for synchronous compilation since vertex and pixel shaders for a drawcall can compile in parallel It also gives a speed boost to asychronous compilation due to using extra threads Vulkan: Fixed a rare race condition where asynchronous shader compilation could fail and lead to permanent graphic bugs for the current play session Vulkan: Added barrier before frame output which should resolve black pixel artifacts on some GPUs Vulkan: Fixed a bug that could cause device loss during swapchain creation