SPIRV-Cross/reference/shaders-msl/comp/composite-array-initialization.comp

#pragma clang diagnostic ignored "-Wmissing-prototypes"
#pragma clang diagnostic ignored "-Wmissing-braces"

#include <metal_stdlib>
#include <simd/simd.h>

using namespace metal;

template<typename T, size_t Num>
struct spvUnsafeArray
{
    T elements[Num ? Num : 1];
    
    thread T& operator [] (size_t pos) thread
    {
        return elements[pos];
    }
    constexpr const thread T& operator [] (size_t pos) const thread
    {
        return elements[pos];
    }
    
    device T& operator [] (size_t pos) device
    {
        return elements[pos];
    }
    constexpr const device T& operator [] (size_t pos) const device
    {
        return elements[pos];
    }
    
    constexpr const constant T& operator [] (size_t pos) const constant
    {
        return elements[pos];
    }
    
    threadgroup T& operator [] (size_t pos) threadgroup
    {
        return elements[pos];
    }
    constexpr const threadgroup T& operator [] (size_t pos) const threadgroup
    {
        return elements[pos];
    }
};

struct Data
{
    float a;
    float b;
};

constant float X_tmp [[function_constant(0)]];
constant float X = is_function_constant_defined(X_tmp) ? X_tmp : 4.0;

struct Data_1
{
    float a;
    float b;
};

struct SSBO
{
    Data_1 outdata[1];
};

constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(2u, 1u, 1u);

constant spvUnsafeArray<Data, 2> _25 = spvUnsafeArray<Data, 2>({ Data{ 1.0, 2.0 }, Data{ 3.0, 4.0 } });

static inline __attribute__((always_inline))
Data combine(thread const Data& a, thread const Data& b)
{
    return Data{ a.a + b.a, a.b + b.b };
}

kernel void main0(device SSBO& _53 [[buffer(0)]], uint3 gl_WorkGroupID [[threadgroup_position_in_grid]], uint3 gl_LocalInvocationID [[thread_position_in_threadgroup]])
{
    spvUnsafeArray<Data, 2> data = spvUnsafeArray<Data, 2>({ Data{ 1.0, 2.0 }, Data{ 3.0, 4.0 } });
    spvUnsafeArray<Data, 2> _31 = spvUnsafeArray<Data, 2>({ Data{ X, 2.0 }, Data{ 3.0, 5.0 } });
    spvUnsafeArray<Data, 2> data2;
    data2 = _31;
    Data param = data[gl_LocalInvocationID.x];
    Data param_1 = data2[gl_LocalInvocationID.x];
    Data _73 = combine(param, param_1);
    _53.outdata[gl_WorkGroupID.x].a = _73.a;
    _53.outdata[gl_WorkGroupID.x].b = _73.b;
}