SPIRV-Cross/reference/shaders-msl/comp/shared-array-of-arrays.comp
Hans-Kristian Arntzen 0909975655 MSL: Declare gl_WorkGroupSize constant with [[maybe_unused]].
Avoids ugly warnings on nearly every compute shader.
We could do analysis to detect whether we need to emit this constant,
but it's a bit tedious to figure out if an OpConstantComponent is
actually used by opcodes, so just make it simple.
2019-03-28 10:54:18 +01:00

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#pragma clang diagnostic ignored "-Wmissing-prototypes"
#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct SSBO
{
float out_data[1];
};
constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(4u, 4u, 1u);
void work(threadgroup float (&foo)[4][4], thread uint3& gl_LocalInvocationID, thread uint& gl_LocalInvocationIndex, device SSBO& v_67, thread uint3& gl_GlobalInvocationID)
{
foo[gl_LocalInvocationID.x][gl_LocalInvocationID.y] = float(gl_LocalInvocationIndex);
threadgroup_barrier(mem_flags::mem_threadgroup);
float x = 0.0;
x += foo[gl_LocalInvocationID.x][0];
x += foo[gl_LocalInvocationID.x][1];
x += foo[gl_LocalInvocationID.x][2];
x += foo[gl_LocalInvocationID.x][3];
v_67.out_data[gl_GlobalInvocationID.x] = x;
}
kernel void main0(device SSBO& v_67 [[buffer(0)]], uint3 gl_LocalInvocationID [[thread_position_in_threadgroup]], uint gl_LocalInvocationIndex [[thread_index_in_threadgroup]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
{
threadgroup float foo[4][4];
work(foo, gl_LocalInvocationID, gl_LocalInvocationIndex, v_67, gl_GlobalInvocationID);
}