reference/shaders-msl/comp/packing-test-1.comp

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

using namespace metal;

struct T1
{
    packed_float3 a;
    float b;
};

struct T1_1
{
    float3 a;
    float b;
};

struct Buffer0
{
    T1 buf0[1];
};

struct Buffer1
{
    float buf1[1];
};

constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(32u, 1u, 1u);

kernel void main0(device Buffer0& _15 [[buffer(1)]], device Buffer1& _34 [[buffer(2)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
{
    T1_1 v;
    v.a = float3(_15.buf0[0].a);
    v.b = _15.buf0[0].b;
    float x = v.b;
    _34.buf1[gl_GlobalInvocationID.x] = x;
}