[wgsl-writer] Emit array stride decoration.
This CL adds array stride decorations to the WGSL writer. Bug: tint:179 Change-Id: I39d7625e1bdc876bbf9a83da7af76eb98bd09c28 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/26002 Reviewed-by: David Neto <dneto@google.com>
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@ -356,6 +356,11 @@ bool GeneratorImpl::EmitType(ast::type::Type* type) {
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out_ << alias->name();
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} else if (type->IsArray()) {
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auto* ary = type->AsArray();
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if (ary->has_array_stride()) {
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out_ << "[[stride " << ary->array_stride() << "]] ";
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}
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out_ << "array<";
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if (!EmitType(ary->type())) {
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return false;
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@ -55,6 +55,16 @@ TEST_F(WgslGeneratorImplTest, EmitType_Array) {
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EXPECT_EQ(g.result(), "array<bool, 4>");
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}
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TEST_F(WgslGeneratorImplTest, EmitType_Array_WithStride) {
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ast::type::BoolType b;
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ast::type::ArrayType a(&b, 4);
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a.set_array_stride(16);
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GeneratorImpl g;
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ASSERT_TRUE(g.EmitType(&a)) << g.error();
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EXPECT_EQ(g.result(), "[[stride 16]] array<bool, 4>");
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}
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TEST_F(WgslGeneratorImplTest, EmitType_RuntimeArray) {
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ast::type::BoolType b;
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ast::type::ArrayType a(&b);
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