SPIRV-Cross/reference/shaders-msl/comp/array-length.comp
Hans-Kristian Arntzen d1479f871a MSL: Do not generate UnsafeArray<> for any array inside buffer objects.
This avoids a lot of huge code changes.
Arrays generally cannot be copied in and out of buffers, at least no
compiler frontend seems to do it.

Also avoids a lot of issues surrounding packed vectors and matrices.
2019-10-24 12:22:30 +02:00

79 lines
1.9 KiB
Plaintext

#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
{
uint size;
float4 v[1];
};
struct SSBO1
{
float bz[1];
};
constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(1u);
static inline __attribute__((always_inline))
uint get_size(device SSBO& v_14, constant uint& v_14BufferSize, thread spvUnsafeArray<device SSBO1*, 2> (&ssbos), constant uint* ssbosBufferSize)
{
return uint(int((v_14BufferSize - 16) / 16) + int((ssbosBufferSize[1] - 0) / 4));
}
kernel void main0(constant uint* spvBufferSizeConstants [[buffer(25)]], device SSBO& v_14 [[buffer(0)]], device SSBO1* ssbos_0 [[buffer(1)]], device SSBO1* ssbos_1 [[buffer(2)]])
{
spvUnsafeArray<device SSBO1*, 2> ssbos =
{
ssbos_0,
ssbos_1,
};
constant uint& v_14BufferSize = spvBufferSizeConstants[0];
constant uint* ssbosBufferSize = &spvBufferSizeConstants[1];
v_14.size = get_size(v_14, v_14BufferSize, ssbos, ssbosBufferSize);
}