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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/lang/wgsl/resolver/resolver.h"
#include "gmock/gmock.h"
#include "src/tint/lang/core/builtin/builtin_value.h"
#include "src/tint/lang/wgsl/ast/stage_attribute.h"
#include "src/tint/lang/wgsl/resolver/resolver_test_helper.h"
#include "src/tint/lang/wgsl/sem/struct.h"
namespace tint::resolver {
namespace {
using ::testing::UnorderedElementsAre;
using namespace tint::builtin::fluent_types; // NOLINT
using namespace tint::number_suffixes; // NOLINT
using ResolverPipelineStageUseTest = ResolverTest;
TEST_F(ResolverPipelineStageUseTest, UnusedStruct) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_TRUE(sem->PipelineStageUses().empty());
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsNonEntryPointParam) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
Func("foo", utils::Vector{Param("param", ty.Of(s))}, ty.void_(), utils::Empty, utils::Empty);
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_TRUE(sem->PipelineStageUses().empty());
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsNonEntryPointReturnType) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
Func("foo", utils::Empty, ty.Of(s), utils::Vector{Return(Call(ty.Of(s), Expr(0_f)))},
utils::Empty);
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_TRUE(sem->PipelineStageUses().empty());
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsVertexShaderParam) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
Func("main", utils::Vector{Param("param", ty.Of(s))}, ty.vec4<f32>(),
utils::Vector{Return(Call<vec4<f32>>())},
utils::Vector{Stage(ast::PipelineStage::kVertex)},
utils::Vector{Builtin(builtin::BuiltinValue::kPosition)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kVertexInput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsVertexShaderReturnType) {
auto* s = Structure(
"S", utils::Vector{Member("a", ty.vec4<f32>(),
utils::Vector{Builtin(builtin::BuiltinValue::kPosition)})});
Func("main", utils::Empty, ty.Of(s), utils::Vector{Return(Call(ty.Of(s)))},
utils::Vector{Stage(ast::PipelineStage::kVertex)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kVertexOutput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsFragmentShaderParam) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
Func("main", utils::Vector{Param("param", ty.Of(s))}, ty.void_(), utils::Empty,
utils::Vector{Stage(ast::PipelineStage::kFragment)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kFragmentInput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsFragmentShaderReturnType) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
Func("main", utils::Empty, ty.Of(s), utils::Vector{Return(Call(ty.Of(s), Expr(0_f)))},
utils::Vector{Stage(ast::PipelineStage::kFragment)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kFragmentOutput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsComputeShaderParam) {
auto* s = Structure(
"S",
utils::Vector{Member(
"a", ty.u32(), utils::Vector{Builtin(builtin::BuiltinValue::kLocalInvocationIndex)})});
Func("main", utils::Vector{Param("param", ty.Of(s))}, ty.void_(), utils::Empty,
utils::Vector{Stage(ast::PipelineStage::kCompute), WorkgroupSize(1_i)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kComputeInput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedMultipleStages) {
auto* s = Structure(
"S", utils::Vector{Member("a", ty.vec4<f32>(),
utils::Vector{Builtin(builtin::BuiltinValue::kPosition)})});
Func("vert_main", utils::Empty, ty.Of(s), utils::Vector{Return(Call(ty.Of(s)))},
utils::Vector{Stage(ast::PipelineStage::kVertex)});
Func("frag_main", utils::Vector{Param("param", ty.Of(s))}, ty.void_(), utils::Empty,
utils::Vector{Stage(ast::PipelineStage::kFragment)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kVertexOutput,
type::PipelineStageUsage::kFragmentInput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsShaderParamViaAlias) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
auto* s_alias = Alias("S_alias", ty.Of(s));
Func("main", utils::Vector{Param("param", ty.Of(s_alias))}, ty.void_(), utils::Empty,
utils::Vector{Stage(ast::PipelineStage::kFragment)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kFragmentInput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsShaderParamLocationSet) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(3_a)})});
Func("main", utils::Vector{Param("param", ty.Of(s))}, ty.void_(), utils::Empty,
utils::Vector{Stage(ast::PipelineStage::kFragment)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
ASSERT_EQ(1u, sem->Members().Length());
EXPECT_EQ(3u, sem->Members()[0]->Attributes().location);
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsShaderReturnTypeViaAlias) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(0_a)})});
auto* s_alias = Alias("S_alias", ty.Of(s));
Func("main", utils::Empty, ty.Of(s_alias),
utils::Vector{Return(Call(ty.Of(s_alias), Expr(0_f)))},
utils::Vector{Stage(ast::PipelineStage::kFragment)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
EXPECT_THAT(sem->PipelineStageUses(),
UnorderedElementsAre(type::PipelineStageUsage::kFragmentOutput));
}
TEST_F(ResolverPipelineStageUseTest, StructUsedAsShaderReturnTypeLocationSet) {
auto* s = Structure("S", utils::Vector{Member("a", ty.f32(), utils::Vector{Location(3_a)})});
Func("main", utils::Empty, ty.Of(s), utils::Vector{Return(Call(ty.Of(s), Expr(0_f)))},
utils::Vector{Stage(ast::PipelineStage::kFragment)});
ASSERT_TRUE(r()->Resolve()) << r()->error();
auto* sem = TypeOf(s)->As<type::Struct>();
ASSERT_NE(sem, nullptr);
ASSERT_EQ(1u, sem->Members().Length());
EXPECT_EQ(3u, sem->Members()[0]->Attributes().location);
}
} // namespace
} // namespace tint::resolver