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tint/writer/msl: Generate an array<T,N> helper

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And remove the WrapArraysInStructs transform.

Wrapping arrays in structures becomes troublesome for `const` arrays, as
currently WGSL does not allow `const` structures.

MSL 2.0+ has a builtin array<> helper, but we're targetting MSL 1.2, so
we have to emit our own. Fortunately, it can be done with a few lines of
templated code.

This produces significantly cleaner output.

Change-Id: Ifc92ef21e09befa252a07c856c4b5afdc51cc2e4
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/94540
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
This commit is contained in:
Ben Clayton
2022-06-24 17:01:59 +00:00
committed by Dawn LUCI CQ
parent 3c054304a8
commit f47887d207
218 changed files with 3637 additions and 2269 deletions
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44
test/tint/buffer/uniform/dynamic_index/read.wgsl.expected.msl
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@@ -12,8 +12,16 @@ inline vec<T, N> operator*(packed_vec<T, M> lhs, matrix<T, N, M> rhs) {
return vec<T, M>(lhs) * rhs;
}
struct tint_array_wrapper {
/* 0x0000 */ int4 arr[4];
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 Inner {
@@ -27,30 +35,26 @@ struct Inner {
/* 0x0038 */ int2 h;
/* 0x0040 */ float2x3 i;
/* 0x0060 */ float3x2 j;
/* 0x0078 */ int8_t tint_pad[8];
/* 0x0080 */ tint_array_wrapper k;
};
struct tint_array_wrapper_1 {
/* 0x0000 */ Inner arr[8];
/* 0x0078 */ tint_array<int8_t, 8> tint_pad;
/* 0x0080 */ tint_array<int4, 4> k;
};
struct S {
/* 0x0000 */ tint_array_wrapper_1 arr;
/* 0x0000 */ tint_array<Inner, 8> arr;
};
void tint_symbol_inner(uint idx, const constant S* const tint_symbol_1) {
int3 const a = (*(tint_symbol_1)).arr.arr[idx].a;
int const b = (*(tint_symbol_1)).arr.arr[idx].b;
uint3 const c = (*(tint_symbol_1)).arr.arr[idx].c;
uint const d = (*(tint_symbol_1)).arr.arr[idx].d;
float3 const e = (*(tint_symbol_1)).arr.arr[idx].e;
float const f = (*(tint_symbol_1)).arr.arr[idx].f;
int2 const g = (*(tint_symbol_1)).arr.arr[idx].g;
int2 const h = (*(tint_symbol_1)).arr.arr[idx].h;
float2x3 const i = (*(tint_symbol_1)).arr.arr[idx].i;
float3x2 const j = (*(tint_symbol_1)).arr.arr[idx].j;
tint_array_wrapper const k = (*(tint_symbol_1)).arr.arr[idx].k;
int3 const a = (*(tint_symbol_1)).arr[idx].a;
int const b = (*(tint_symbol_1)).arr[idx].b;
uint3 const c = (*(tint_symbol_1)).arr[idx].c;
uint const d = (*(tint_symbol_1)).arr[idx].d;
float3 const e = (*(tint_symbol_1)).arr[idx].e;
float const f = (*(tint_symbol_1)).arr[idx].f;
int2 const g = (*(tint_symbol_1)).arr[idx].g;
int2 const h = (*(tint_symbol_1)).arr[idx].h;
float2x3 const i = (*(tint_symbol_1)).arr[idx].i;
float3x2 const j = (*(tint_symbol_1)).arr[idx].j;
tint_array<int4, 4> const k = (*(tint_symbol_1)).arr[idx].k;
}
kernel void tint_symbol(const constant S* tint_symbol_2 [[buffer(0)]], uint idx [[thread_index_in_threadgroup]]) {