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My MacBook Pro 2018 has two GPUs: AMD Radeon Pro 555X and Intel(R) UHD Graphics 630. I supposed the AMD 555X would be superior in performance compared to the Intel(R) UHD Graphics 630.   However, I observed a huge performance difference for Metal Performance Shaders (MPS) between the two GPUs. The Intel GPU performs the simple test code (a… (Show more)
in Metal
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In a simple Metal app that renders a grid of 2D Textures rotated and scaled I get the following strange artefacts (only on a MacBook Pro - on an iPad Pro the same code works perfectly). At some small regions on the screen (mainly little squares of ca. 10x10 pixels) the Fragment shader accesses the wrong texture, that is, NOT the one set by… (Show more)
in Metal