68 lines
1.6 KiB
Plaintext
68 lines
1.6 KiB
Plaintext
#pragma clang diagnostic ignored "-Wmissing-prototypes"
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#pragma clang diagnostic ignored "-Wmissing-braces"
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#pragma clang diagnostic ignored "-Wunused-variable"
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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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template<typename T, size_t Num>
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struct spvUnsafeArray
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{
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T elements[Num ? Num : 1];
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thread T& operator [] (size_t pos) thread
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{
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return elements[pos];
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}
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constexpr const thread T& operator [] (size_t pos) const thread
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{
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return elements[pos];
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}
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device T& operator [] (size_t pos) device
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{
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return elements[pos];
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}
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constexpr const device T& operator [] (size_t pos) const device
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{
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return elements[pos];
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}
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constexpr const constant T& operator [] (size_t pos) const constant
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{
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return elements[pos];
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}
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threadgroup T& operator [] (size_t pos) threadgroup
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{
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return elements[pos];
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}
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constexpr const threadgroup T& operator [] (size_t pos) const threadgroup
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{
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return elements[pos];
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}
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};
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struct myBlock
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{
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int a;
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spvUnsafeArray<float, 1> b;
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};
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// Implementation of the GLSL mod() function, which is slightly different than Metal fmod()
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template<typename Tx, typename Ty>
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static inline __attribute__((always_inline))
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Tx mod(Tx x, Ty y)
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{
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return x - y * floor(x / y);
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}
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kernel void main0(device myBlock& myStorage [[buffer(0)]], uint3 gl_LocalInvocationID [[thread_position_in_threadgroup]])
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{
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myStorage.a = (myStorage.a + 1) % 256;
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myStorage.b[gl_LocalInvocationID.x] = mod(myStorage.b[gl_LocalInvocationID.x] + 0.0199999995529651641845703125, 1.0);
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}
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