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// 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 <memory>
#include "src/ast/function.h"
#include "src/ast/identifier_expression.h"
#include "src/ast/module.h"
#include "src/ast/type/void_type.h"
#include "src/writer/hlsl/test_helper.h"
namespace tint {
namespace writer {
namespace hlsl {
namespace {
using HlslGeneratorImplTest = TestHelper;
TEST_F(HlslGeneratorImplTest, Generate) {
ast::type::VoidType void_type;
auto* func = create<ast::Function>("my_func", ast::VariableList{}, &void_type,
create<ast::BlockStatement>());
mod.AddFunction(func);
ASSERT_TRUE(gen.Generate(out)) << gen.error();
EXPECT_EQ(result(), R"(void my_func() {
}
)");
}
TEST_F(HlslGeneratorImplTest, InputStructName) {
ASSERT_EQ(gen.generate_name("func_main_in"), "func_main_in");
}
TEST_F(HlslGeneratorImplTest, InputStructName_ConflictWithExisting) {
// Register the struct name as existing.
auto* namer = gen.namer_for_testing();
namer->NameFor("func_main_out");
ASSERT_EQ(gen.generate_name("func_main_out"), "func_main_out_0");
}
TEST_F(HlslGeneratorImplTest, NameConflictWith_InputStructName) {
ASSERT_EQ(gen.generate_name("func_main_in"), "func_main_in");
ast::IdentifierExpression ident("func_main_in");
ASSERT_TRUE(gen.EmitIdentifier(pre, out, &ident));
EXPECT_EQ(result(), "func_main_in_0");
}
struct HlslBuiltinData {
ast::Builtin builtin;
const char* attribute_name;
};
inline std::ostream& operator<<(std::ostream& out, HlslBuiltinData data) {
out << data.builtin;
return out;
}
using HlslBuiltinConversionTest = TestParamHelper<HlslBuiltinData>;
TEST_P(HlslBuiltinConversionTest, Emit) {
auto params = GetParam();
EXPECT_EQ(gen.builtin_to_attribute(params.builtin),
std::string(params.attribute_name));
}
INSTANTIATE_TEST_SUITE_P(
HlslGeneratorImplTest,
HlslBuiltinConversionTest,
testing::Values(
HlslBuiltinData{ast::Builtin::kPosition, "SV_Position"},
HlslBuiltinData{ast::Builtin::kVertexIdx, "SV_VertexID"},
HlslBuiltinData{ast::Builtin::kInstanceIdx, "SV_InstanceID"},
HlslBuiltinData{ast::Builtin::kFrontFacing, "SV_IsFrontFacing"},
HlslBuiltinData{ast::Builtin::kFragCoord, "SV_Position"},
HlslBuiltinData{ast::Builtin::kFragDepth, "SV_Depth"},
HlslBuiltinData{ast::Builtin::kLocalInvocationId, "SV_GroupThreadID"},
HlslBuiltinData{ast::Builtin::kLocalInvocationIdx, "SV_GroupIndex"},
HlslBuiltinData{ast::Builtin::kGlobalInvocationId,
"SV_DispatchThreadID"}));
} // namespace
} // namespace hlsl
} // namespace writer
} // namespace tint