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Update MSL generator to handle casts of packed types.

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Currently in the MSL backend we cast int values to uint in order to get
the correct WGSL behaviour for over/under flow. This fails in the case
of host shareable buffers as they use `packed` types which need to get
cast to the non-packed version first.

Bug: tint:1677
Change-Id: I57b70abaa8ca614472a26d63f19c1aef2bd64668
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/103986
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This commit is contained in:
dan sinclair
2022-09-29 19:44:58 +00:00
committed by Dawn LUCI CQ
parent d1a5f93630
commit 2bcade246a
27 changed files with 197 additions and 30 deletions
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2
test/tint/statements/compound_assign/vector/minus.wgsl.expected.msl
View File

@@ -6,6 +6,6 @@ struct S {
};
void foo(device S* const tint_symbol) {
(*(tint_symbol)).a = as_type<int4>((as_type<uint4>((*(tint_symbol)).a) - as_type<uint4>(int4(2))));
(*(tint_symbol)).a = as_type<int4>((as_type<uint4>(as_type<int4>((*(tint_symbol)).a)) - as_type<uint4>(as_type<int4>(int4(2)))));
}

2
test/tint/statements/compound_assign/vector/plus.wgsl.expected.msl
View File

@@ -6,6 +6,6 @@ struct S {
};
void foo(device S* const tint_symbol) {
(*(tint_symbol)).a = as_type<int4>((as_type<uint4>((*(tint_symbol)).a) + as_type<uint4>(int4(2))));
(*(tint_symbol)).a = as_type<int4>((as_type<uint4>(as_type<int4>((*(tint_symbol)).a)) + as_type<uint4>(as_type<int4>(int4(2)))));
}

2
test/tint/statements/compound_assign/vector/times.wgsl.expected.msl
View File

@@ -6,6 +6,6 @@ struct S {
};
void foo(device S* const tint_symbol) {
(*(tint_symbol)).a = as_type<int4>((as_type<uint4>((*(tint_symbol)).a) * as_type<uint4>(int4(2))));
(*(tint_symbol)).a = as_type<int4>((as_type<uint4>(as_type<int4>((*(tint_symbol)).a)) * as_type<uint4>(as_type<int4>(int4(2)))));
}