1#pragma clang diagnostic ignored "-Wmissing-prototypes"
2#pragma clang diagnostic ignored "-Wmissing-braces"
3
4#include <metal_stdlib>
5#include <simd/simd.h>
6
7using namespace metal;
8
9template<typename T, size_t Num>
10struct spvUnsafeArray
11{
12    T elements[Num ? Num : 1];
13
14    thread T& operator [] (size_t pos) thread
15    {
16        return elements[pos];
17    }
18    constexpr const thread T& operator [] (size_t pos) const thread
19    {
20        return elements[pos];
21    }
22
23    device T& operator [] (size_t pos) device
24    {
25        return elements[pos];
26    }
27    constexpr const device T& operator [] (size_t pos) const device
28    {
29        return elements[pos];
30    }
31
32    constexpr const constant T& operator [] (size_t pos) const constant
33    {
34        return elements[pos];
35    }
36
37    threadgroup T& operator [] (size_t pos) threadgroup
38    {
39        return elements[pos];
40    }
41    constexpr const threadgroup T& operator [] (size_t pos) const threadgroup
42    {
43        return elements[pos];
44    }
45};
46
47struct main0_out
48{
49    float3 vVertex;
50};
51
52struct main0_patchOut
53{
54    spvUnsafeArray<float3, 2> vPatch;
55};
56
57struct main0_in
58{
59    float3 vInput [[attribute(0)]];
60};
61
62kernel void main0(main0_in in [[stage_in]], uint gl_InvocationID [[thread_index_in_threadgroup]], uint gl_PrimitiveID [[threadgroup_position_in_grid]], device main0_out* spvOut [[buffer(28)]], constant uint* spvIndirectParams [[buffer(29)]], device main0_patchOut* spvPatchOut [[buffer(27)]], device MTLQuadTessellationFactorsHalf* spvTessLevel [[buffer(26)]], threadgroup main0_in* gl_in [[threadgroup(0)]])
63{
64    device main0_out* gl_out = &spvOut[gl_PrimitiveID * 4];
65    device main0_patchOut& patchOut = spvPatchOut[gl_PrimitiveID];
66    if (gl_InvocationID < spvIndirectParams[0])
67        gl_in[gl_InvocationID] = in;
68    threadgroup_barrier(mem_flags::mem_threadgroup);
69    if (gl_InvocationID >= 4)
70        return;
71    gl_out[gl_InvocationID].vVertex = gl_in[gl_InvocationID].vInput + gl_in[gl_InvocationID ^ 1].vInput;
72    threadgroup_barrier(mem_flags::mem_device | mem_flags::mem_threadgroup);
73    if (gl_InvocationID == 0)
74    {
75        patchOut.vPatch[0] = float3(10.0);
76        patchOut.vPatch[1] = float3(20.0);
77        spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[0] = half(1.0);
78        spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[1] = half(2.0);
79        spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[2] = half(3.0);
80        spvTessLevel[gl_PrimitiveID].edgeTessellationFactor[3] = half(4.0);
81        spvTessLevel[gl_PrimitiveID].insideTessellationFactor[0] = half(1.0);
82        spvTessLevel[gl_PrimitiveID].insideTessellationFactor[1] = half(2.0);
83    }
84}
85
86