fa5b206d97
On MSL, the compiler refuses to allow access chains into a normal vector type. What happens in practice instead is a read-modify-write where a vector type is loaded, modified and written back. The workaround is to convert a vector into a pointer-to-scalar before the access chain continues to add the scalar index.
93 lines
2.8 KiB
Plaintext
93 lines
2.8 KiB
Plaintext
#pragma clang diagnostic ignored "-Wmissing-prototypes"
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#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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typedef packed_float3 packed_float2x3[2];
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struct SSBOCol
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{
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packed_float2x3 col_major0;
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packed_float2x3 col_major1;
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};
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struct SSBORow
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{
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float3x2 row_major0;
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float3x2 row_major1;
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};
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constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(1u);
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static inline __attribute__((always_inline))
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void load_store_to_variable_col_major(device SSBOCol& v_29)
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{
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float2x3 loaded = float2x3(float3(v_29.col_major0[0]), float3(v_29.col_major0[1]));
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v_29.col_major1[0] = loaded[0];
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v_29.col_major1[1] = loaded[1];
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}
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static inline __attribute__((always_inline))
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void load_store_to_variable_row_major(device SSBORow& v_41)
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{
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float2x3 loaded = transpose(v_41.row_major0);
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v_41.row_major0 = transpose(loaded);
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}
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static inline __attribute__((always_inline))
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void copy_col_major_to_col_major(device SSBOCol& v_29)
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{
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v_29.col_major0[0] = float2x3(float3(v_29.col_major1[0]), float3(v_29.col_major1[1]))[0];
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v_29.col_major0[1] = float2x3(float3(v_29.col_major1[0]), float3(v_29.col_major1[1]))[1];
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}
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static inline __attribute__((always_inline))
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void copy_col_major_to_row_major(device SSBOCol& v_29, device SSBORow& v_41)
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{
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v_41.row_major0 = transpose(float2x3(float3(v_29.col_major0[0]), float3(v_29.col_major0[1])));
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}
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static inline __attribute__((always_inline))
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void copy_row_major_to_col_major(device SSBOCol& v_29, device SSBORow& v_41)
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{
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v_29.col_major0[0] = float3(v_41.row_major0[0][0], v_41.row_major0[1][0], v_41.row_major0[2][0]);
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v_29.col_major0[1] = float3(v_41.row_major0[0][1], v_41.row_major0[1][1], v_41.row_major0[2][1]);
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}
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static inline __attribute__((always_inline))
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void copy_row_major_to_row_major(device SSBORow& v_41)
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{
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v_41.row_major0 = v_41.row_major1;
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}
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static inline __attribute__((always_inline))
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void copy_columns(device SSBOCol& v_29, device SSBORow& v_41)
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{
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v_29.col_major0[1] = float3(v_41.row_major0[0][1], v_41.row_major0[1][1], v_41.row_major0[2][1]);
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v_41.row_major0[0][1] = v_29.col_major0[1][0];
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v_41.row_major0[1][1] = v_29.col_major0[1][1];
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v_41.row_major0[2][1] = v_29.col_major0[1][2];
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}
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static inline __attribute__((always_inline))
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void copy_elements(device SSBOCol& v_29, device SSBORow& v_41)
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{
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v_29.col_major0[0][1u] = ((device float*)&v_41.row_major0[1u])[0];
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((device float*)&v_41.row_major0[1u])[0] = v_29.col_major0[0][1u];
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}
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kernel void main0(device SSBOCol& v_29 [[buffer(0)]], device SSBORow& v_41 [[buffer(1)]])
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{
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load_store_to_variable_col_major(v_29);
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load_store_to_variable_row_major(v_41);
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copy_col_major_to_col_major(v_29);
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copy_col_major_to_row_major(v_29, v_41);
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copy_row_major_to_col_major(v_29, v_41);
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copy_row_major_to_row_major(v_41);
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copy_columns(v_29, v_41);
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copy_elements(v_29, v_41);
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}
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