reference/shaders-msl-no-opt/packing/matrix-2x2-std430.comp

#pragma clang diagnostic ignored "-Wmissing-prototypes"

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

using namespace metal;

struct SSBOCol
{
    float2x2 col_major0;
    float2x2 col_major1;
};

struct SSBORow
{
    float2x2 row_major0;
    float2x2 row_major1;
};

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

static inline __attribute__((always_inline))
void load_store_to_variable_col_major(device SSBOCol& v_29)
{
    float2x2 loaded = v_29.col_major0;
    v_29.col_major1 = loaded;
}

static inline __attribute__((always_inline))
void load_store_to_variable_row_major(device SSBORow& v_41)
{
    float2x2 loaded = transpose(v_41.row_major0);
    v_41.row_major0 = transpose(loaded);
}

static inline __attribute__((always_inline))
void copy_col_major_to_col_major(device SSBOCol& v_29)
{
    v_29.col_major0 = v_29.col_major1;
}

static inline __attribute__((always_inline))
void copy_col_major_to_row_major(device SSBOCol& v_29, device SSBORow& v_41)
{
    v_41.row_major0 = transpose(v_29.col_major0);
}

static inline __attribute__((always_inline))
void copy_row_major_to_col_major(device SSBOCol& v_29, device SSBORow& v_41)
{
    v_29.col_major0 = transpose(v_41.row_major0);
}

static inline __attribute__((always_inline))
void copy_row_major_to_row_major(device SSBORow& v_41)
{
    v_41.row_major0 = v_41.row_major1;
}

static inline __attribute__((always_inline))
void copy_columns(device SSBOCol& v_29, device SSBORow& v_41)
{
    v_29.col_major0[1] = float2(v_41.row_major0[0][1], v_41.row_major0[1][1]);
    v_41.row_major0[0][1] = v_29.col_major0[1].x;
    v_41.row_major0[1][1] = v_29.col_major0[1].y;
}

static inline __attribute__((always_inline))
void copy_elements(device SSBOCol& v_29, device SSBORow& v_41)
{
    ((device float*)&v_29.col_major0[0])[1u] = ((device float*)&v_41.row_major0[1u])[0];
    ((device float*)&v_41.row_major0[1u])[0] = ((device float*)&v_29.col_major0[0])[1u];
}

kernel void main0(device SSBOCol& v_29 [[buffer(0)]], device SSBORow& v_41 [[buffer(1)]])
{
    load_store_to_variable_col_major(v_29);
    load_store_to_variable_row_major(v_41);
    copy_col_major_to_col_major(v_29);
    copy_col_major_to_row_major(v_29, v_41);
    copy_row_major_to_col_major(v_29, v_41);
    copy_row_major_to_row_major(v_41);
    copy_columns(v_29, v_41);
    copy_elements(v_29, v_41);
}