Hi there!
Is there any documentation about SIMD in Metal like float4x4 constructors: identity, rotation… ?!?
Thanks in advance
SIMD isn’t Metal specific; it’s actually part of the Accelerate framework:
https://developer.apple.com/documentation/accelerate/simd
And float4x4 doesn’t exist. In the book, float4x4 is a typealias for simd_float4x4.
There’s also a nice article on matrices: Apple Developer Documentation
If you mean in shaders, then that’s Metal Shading Language, which is based on C++. The only documentation is the Metal Shading Language Specification: https://developer.apple.com/metal/Metal-Shading-Language-Specification.pdf
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Thank you very much!
Yes I mean in shaders: metal::float4x4
I’ve already read all of these documents but seems not exists constructors for rotations or identity.
No problem, I’ll implement it with with your code of the MathLibrary.swift as a reference 
Yes, the MSL is all we have to go on. Comparing the metal standard library header files with the specification, however, does show that the specification looks accurate.
For example, metal_matrix only has determinant and transpose, which is what is listed in the MSL doc.
Any further functions you’d have to create yourself.
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