Antonio Maiorano ec20758675 tint: polyfill remainder to handle negative operands
Bug: tint:1802
Change-Id: Ie9baa045feda08523e5ca4f5ce94b6db7d4477e5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/119100
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
2023-02-10 15:01:02 +00:00

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#include <metal_stdlib>
using namespace metal;
int3 tint_mod(int lhs, int3 rhs) {
int3 const l = int3(lhs);
int3 const rhs_or_one = select(rhs, int3(1), ((rhs == int3(0)) | ((l == int3((-2147483647 - 1))) & (rhs == int3(-1)))));
if (any(((uint3((l | rhs_or_one)) & uint3(2147483648u)) != uint3(0u)))) {
return as_type<int3>((as_type<uint3>(l) - as_type<uint3>(as_type<int3>((as_type<uint3>((l / rhs_or_one)) * as_type<uint3>(rhs_or_one))))));
} else {
return (l % rhs_or_one);
}
}
kernel void f() {
int const a = 4;
int3 const b = int3(1, 2, 3);
int3 const r = tint_mod(a, b);
return;
}