reference/opt/shaders-msl/comp/global-invocation-id.comp


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#pragma clang diagnostic ignored "-Wmissing-prototypes"

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

using namespace metal;

struct myBlock
{
    int a;
    float b[1];
};

// Implementation of the GLSL mod() function, which is slightly different than Metal fmod()
template<typename Tx, typename Ty>
inline Tx mod(Tx x, Ty y)
{
    return x - y * floor(x / y);
}

kernel void main0(device myBlock& myStorage [[buffer(0)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
{
    myStorage.a = (myStorage.a + 1) % 256;
    myStorage.b[gl_GlobalInvocationID.x] = mod(myStorage.b[gl_GlobalInvocationID.x] + 0.0199999995529651641845703125, 1.0);
}