mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-05-16 12:21:35 +00:00
f47887d207
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>
32 lines
1.2 KiB
Plaintext
32 lines
1.2 KiB
Plaintext
#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];
|
|
};
|
|
|
|
void tint_symbol_inner(uint local_invocation_index, threadgroup tint_array<int, 3>* const tint_symbol_1) {
|
|
for(uint idx = local_invocation_index; (idx < 3u); idx = (idx + 1u)) {
|
|
uint const i = idx;
|
|
(*(tint_symbol_1))[i] = 0;
|
|
}
|
|
threadgroup_barrier(mem_flags::mem_threadgroup);
|
|
tint_array<int, 3> v = *(tint_symbol_1);
|
|
}
|
|
|
|
kernel void tint_symbol(uint local_invocation_index [[thread_index_in_threadgroup]]) {
|
|
threadgroup tint_array<int, 3> tint_symbol_2;
|
|
tint_symbol_inner(local_invocation_index, &(tint_symbol_2));
|
|
return;
|
|
}
|
|
|