| // 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 "src/ast/variable_decl_statement.h" |
| #include "src/type/access_control_type.h" |
| #include "src/type/sampled_texture_type.h" |
| #include "src/writer/wgsl/test_helper.h" |
| |
| namespace tint { |
| namespace writer { |
| namespace wgsl { |
| namespace { |
| |
| using WgslGeneratorImplTest = TestHelper; |
| |
| TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement) { |
| auto* var = Global("a", ty.f32(), ast::StorageClass::kInput); |
| |
| auto* stmt = create<ast::VariableDeclStatement>(var); |
| WrapInFunction(stmt); |
| |
| GeneratorImpl& gen = Build(); |
| |
| gen.increment_indent(); |
| |
| ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error(); |
| EXPECT_EQ(gen.result(), " var<in> a : f32;\n"); |
| } |
| |
| TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement_Function) { |
| // Variable declarations with Function storage class don't mention their |
| // storage class. Rely on defaulting. |
| // https://github.com/gpuweb/gpuweb/issues/654 |
| |
| auto* var = Global("a", ty.f32(), ast::StorageClass::kFunction); |
| |
| auto* stmt = create<ast::VariableDeclStatement>(var); |
| WrapInFunction(stmt); |
| |
| GeneratorImpl& gen = Build(); |
| |
| gen.increment_indent(); |
| |
| ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error(); |
| EXPECT_EQ(gen.result(), " var a : f32;\n"); |
| } |
| |
| TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement_Private) { |
| auto* var = Global("a", ty.f32(), ast::StorageClass::kPrivate); |
| |
| auto* stmt = create<ast::VariableDeclStatement>(var); |
| WrapInFunction(stmt); |
| |
| GeneratorImpl& gen = Build(); |
| |
| gen.increment_indent(); |
| |
| ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error(); |
| EXPECT_EQ(gen.result(), " var<private> a : f32;\n"); |
| } |
| |
| TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement_Sampler) { |
| auto* var = Global("s", create<type::Sampler>(type::SamplerKind::kSampler), |
| ast::StorageClass::kUniformConstant); |
| |
| auto* stmt = create<ast::VariableDeclStatement>(var); |
| |
| GeneratorImpl& gen = Build(); |
| |
| gen.increment_indent(); |
| |
| ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error(); |
| EXPECT_EQ(gen.result(), " var s : sampler;\n"); |
| } |
| |
| TEST_F(WgslGeneratorImplTest, Emit_VariableDeclStatement_Texture) { |
| auto* st = |
| create<type::SampledTexture>(type::TextureDimension::k1d, ty.f32()); |
| auto* var = Global( |
| "t", create<type::AccessControl>(ast::AccessControl::kReadOnly, st), |
| ast::StorageClass::kUniformConstant); |
| |
| auto* stmt = create<ast::VariableDeclStatement>(var); |
| |
| GeneratorImpl& gen = Build(); |
| |
| gen.increment_indent(); |
| |
| ASSERT_TRUE(gen.EmitStatement(stmt)) << gen.error(); |
| EXPECT_EQ(gen.result(), " var t : [[access(read)]] texture_1d<f32>;\n"); |
| } |
| |
| } // namespace |
| } // namespace wgsl |
| } // namespace writer |
| } // namespace tint |