// Copyright 2020 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 #include "gtest/gtest.h" #include "src/ast/binding_decoration.h" #include "src/ast/builtin_decoration.h" #include "src/ast/constant_id_decoration.h" #include "src/ast/group_decoration.h" #include "src/ast/location_decoration.h" #include "src/ast/variable.h" #include "src/ast/variable_decoration.h" #include "src/type/f32_type.h" #include "src/writer/wgsl/generator_impl.h" #include "src/writer/wgsl/test_helper.h" namespace tint { namespace writer { namespace wgsl { namespace { using WgslGeneratorImplTest = TestHelper; TEST_F(WgslGeneratorImplTest, EmitVariable) { auto* v = Global("a", ty.f32(), ast::StorageClass::kNone); GeneratorImpl& gen = Build(); ASSERT_TRUE(gen.EmitVariable(v)) << gen.error(); EXPECT_EQ(gen.result(), R"(var a : f32; )"); } TEST_F(WgslGeneratorImplTest, EmitVariable_StorageClass) { auto* v = Global("a", ty.f32(), ast::StorageClass::kInput); GeneratorImpl& gen = Build(); ASSERT_TRUE(gen.EmitVariable(v)) << gen.error(); EXPECT_EQ(gen.result(), R"(var a : f32; )"); } TEST_F(WgslGeneratorImplTest, EmitVariable_Decorated) { auto* v = Global("a", ty.f32(), ast::StorageClass::kNone, nullptr, ast::VariableDecorationList{ create(2), }); GeneratorImpl& gen = Build(); ASSERT_TRUE(gen.EmitVariable(v)) << gen.error(); EXPECT_EQ(gen.result(), R"([[location(2)]] var a : f32; )"); } TEST_F(WgslGeneratorImplTest, EmitVariable_Decorated_Multiple) { auto* v = Global("a", ty.f32(), ast::StorageClass::kNone, nullptr, ast::VariableDecorationList{ create(ast::Builtin::kPosition), create(0), create(1), create(2), create(42), }); GeneratorImpl& gen = Build(); ASSERT_TRUE(gen.EmitVariable(v)) << gen.error(); EXPECT_EQ( gen.result(), R"([[builtin(position), binding(0), group(1), location(2), constant_id(42)]] var a : f32; )"); } TEST_F(WgslGeneratorImplTest, EmitVariable_Constructor) { auto* v = Global("a", ty.f32(), ast::StorageClass::kNone, Expr("initializer"), ast::VariableDecorationList{}); GeneratorImpl& gen = Build(); ASSERT_TRUE(gen.EmitVariable(v)) << gen.error(); EXPECT_EQ(gen.result(), R"(var a : f32 = initializer; )"); } TEST_F(WgslGeneratorImplTest, EmitVariable_Const) { auto* v = Const("a", ty.f32(), ast::StorageClass::kNone, Expr("initializer"), ast::VariableDecorationList{}); GeneratorImpl& gen = Build(); ASSERT_TRUE(gen.EmitVariable(v)) << gen.error(); EXPECT_EQ(gen.result(), R"(const a : f32 = initializer; )"); } } // namespace } // namespace wgsl } // namespace writer } // namespace tint