SPIRV-Cross/reference/shaders-msl/comp/shared.comp
2019-09-24 14:35:25 -04:00

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#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 SSBO
{
spvUnsafeArray<float, 1> in_data;
};
struct SSBO2
{
spvUnsafeArray<float, 1> out_data;
};
constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(4u, 1u, 1u);
kernel void main0(const device SSBO& _22 [[buffer(0)]], device SSBO2& _44 [[buffer(1)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]], uint gl_LocalInvocationIndex [[thread_index_in_threadgroup]])
{
threadgroup float sShared[4];
uint ident = gl_GlobalInvocationID.x;
float idata = _22.in_data[ident];
sShared[gl_LocalInvocationIndex] = idata;
threadgroup_barrier(mem_flags::mem_threadgroup);
_44.out_data[ident] = sShared[(4u - gl_LocalInvocationIndex) - 1u];
}