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Replied In Metal fragment function becomes slow
Issue was using metal data types not simd data types in structs and "usage of for loops". now I used simd data types and unrolled "for loops" manually then fragment function works very fast. but why metal compiler is not unrolling for loops automatically? and why is simd data types are faster?
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Replied In Exceeding number of available registers and data spilled to slower GPU memory
When I used simd data types for my structs in shader then data spilling decreased a lot and I unrolled "For" loops manually in my shader then my shader works faster but I am not still able to understand why simd data types decreased data spilling while normal metal data types exceeded available registers limit in GPU.