dawn-cmake/test/tint/bug/tint/1677.wgsl.expected.msl
Ben Clayton a92f4259d5 tint/writer/msl: Move packed_vector hacks to transform
Attempting to paper over all the MSL standard library holes for packed_vector in the MSL writer added complexity to the writer, produced messy output, and didn't actually catch all the cases where casts were needed.

Add a new PackedVec3 transform that applies the packed_vector -> vec casts in a smarter, more precise way.

Fixed: tint:1534
Change-Id: I73ce7e5a62fbc9cb04e1093133070f5fb8965dce
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107340
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
2022-10-27 14:36:49 +00:00

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#include <metal_stdlib>
using namespace metal;
template<typename T, size_t N>
struct tint_array {
const constant T& operator[](size_t i) const constant { return elements[i]; }
device T& operator[](size_t i) device { return elements[i]; }
const device T& operator[](size_t i) const device { return elements[i]; }
thread T& operator[](size_t i) thread { return elements[i]; }
const thread T& operator[](size_t i) const thread { return elements[i]; }
threadgroup T& operator[](size_t i) threadgroup { return elements[i]; }
const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; }
T elements[N];
};
struct Input {
/* 0x0000 */ packed_int3 position;
/* 0x000c */ tint_array<int8_t, 4> tint_pad;
};
void tint_symbol_inner(uint3 id, const device Input* const tint_symbol_1) {
int3 const pos = as_type<int3>((as_type<uint3>(int3((*(tint_symbol_1)).position)) - as_type<uint3>(int3(0))));
}
kernel void tint_symbol(const device Input* tint_symbol_2 [[buffer(0)]], uint3 id [[thread_position_in_grid]]) {
tint_symbol_inner(id, tint_symbol_2);
return;
}