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Not API agnostic, but pix can debug dx12 shaders, and renderdoc can debug Vulkan shaders (I've used renderdoc debugger's jump to NaN to fix a few broken shader

Not API agnostic, but pix can debug dx12 shaders, and renderdoc can debug Vulkan shaders (I've used renderdoc debugger's jump to NaN to fix a few broken shader edge cases), and both are vendor agnostic.

pjmlp 3y ago
Additionally Instruments for Metal, and AGI on Android.
flohofwoe 3y ago
And for Metal, Xcode contains an excellent shader debugger (the Metal debugger is probably the only really good part of Xcode).