blob: 15815c1aab3d6770fc83941d2e6be2ee14af9dad [file] [log] [blame]
// 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 "gtest/gtest.h"
#include "src/ast/decorated_variable.h"
#include "src/ast/discard_statement.h"
#include "src/ast/function.h"
#include "src/ast/member_accessor_expression.h"
#include "src/ast/module.h"
#include "src/ast/pipeline_stage.h"
#include "src/ast/return_statement.h"
#include "src/ast/stage_decoration.h"
#include "src/ast/struct_block_decoration.h"
#include "src/ast/struct_member_offset_decoration.h"
#include "src/ast/type/access_control_type.h"
#include "src/ast/type/f32_type.h"
#include "src/ast/type/i32_type.h"
#include "src/ast/type/void_type.h"
#include "src/ast/variable.h"
#include "src/ast/variable_decl_statement.h"
#include "src/ast/workgroup_decoration.h"
#include "src/context.h"
#include "src/type_determiner.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, Emit_Function) {
auto* body = create<ast::BlockStatement>();
body->append(create<ast::DiscardStatement>());
body->append(create<ast::ReturnStatement>());
ast::type::VoidType void_type;
ast::Function func("my_func", {}, &void_type, body);
gen.increment_indent();
ASSERT_TRUE(gen.EmitFunction(&func));
EXPECT_EQ(gen.result(), R"( fn my_func() -> void {
discard;
return;
}
)");
}
TEST_F(WgslGeneratorImplTest, Emit_Function_WithParams) {
auto* body = create<ast::BlockStatement>();
body->append(create<ast::DiscardStatement>());
body->append(create<ast::ReturnStatement>());
ast::type::F32Type f32;
ast::type::I32Type i32;
ast::VariableList params;
params.push_back(create<ast::Variable>("a", ast::StorageClass::kNone, &f32));
params.push_back(create<ast::Variable>("b", ast::StorageClass::kNone, &i32));
ast::type::VoidType void_type;
ast::Function func("my_func", params, &void_type, body);
gen.increment_indent();
ASSERT_TRUE(gen.EmitFunction(&func));
EXPECT_EQ(gen.result(), R"( fn my_func(a : f32, b : i32) -> void {
discard;
return;
}
)");
}
TEST_F(WgslGeneratorImplTest, Emit_Function_WithDecoration_WorkgroupSize) {
auto* body = create<ast::BlockStatement>();
body->append(create<ast::DiscardStatement>());
body->append(create<ast::ReturnStatement>());
ast::type::VoidType void_type;
ast::Function func("my_func", {}, &void_type, body);
func.add_decoration(create<ast::WorkgroupDecoration>(2u, 4u, 6u, Source{}));
gen.increment_indent();
ASSERT_TRUE(gen.EmitFunction(&func));
EXPECT_EQ(gen.result(), R"( [[workgroup_size(2, 4, 6)]]
fn my_func() -> void {
discard;
return;
}
)");
}
TEST_F(WgslGeneratorImplTest, Emit_Function_WithDecoration_Stage) {
auto* body = create<ast::BlockStatement>();
body->append(create<ast::DiscardStatement>());
body->append(create<ast::ReturnStatement>());
ast::type::VoidType void_type;
ast::Function func("my_func", {}, &void_type, body);
func.add_decoration(
create<ast::StageDecoration>(ast::PipelineStage::kFragment, Source{}));
gen.increment_indent();
ASSERT_TRUE(gen.EmitFunction(&func));
EXPECT_EQ(gen.result(), R"( [[stage(fragment)]]
fn my_func() -> void {
discard;
return;
}
)");
}
TEST_F(WgslGeneratorImplTest, Emit_Function_WithDecoration_Multiple) {
auto* body = create<ast::BlockStatement>();
body->append(create<ast::DiscardStatement>());
body->append(create<ast::ReturnStatement>());
ast::type::VoidType void_type;
ast::Function func("my_func", {}, &void_type, body);
func.add_decoration(
create<ast::StageDecoration>(ast::PipelineStage::kFragment, Source{}));
func.add_decoration(create<ast::WorkgroupDecoration>(2u, 4u, 6u, Source{}));
gen.increment_indent();
ASSERT_TRUE(gen.EmitFunction(&func));
EXPECT_EQ(gen.result(), R"( [[stage(fragment)]]
[[workgroup_size(2, 4, 6)]]
fn my_func() -> void {
discard;
return;
}
)");
}
// https://crbug.com/tint/297
TEST_F(WgslGeneratorImplTest,
Emit_Function_Multiple_EntryPoint_With_Same_ModuleVar) {
// [[block]] struct Data {
// [[offset(0)]] d : f32;
// };
// [[binding(0), set(0)]] var<storage_buffer> data : Data;
//
// [[stage(compute)]]
// fn a() -> void {
// return;
// }
//
// [[stage(compute)]]
// fn b() -> void {
// return;
// }
ast::type::VoidType void_type;
ast::type::F32Type f32;
ast::StructMemberList members;
ast::StructMemberDecorationList a_deco;
a_deco.push_back(create<ast::StructMemberOffsetDecoration>(0, Source{}));
members.push_back(create<ast::StructMember>("d", &f32, a_deco));
ast::StructDecorationList s_decos;
s_decos.push_back(create<ast::StructBlockDecoration>(Source{}));
auto* str = create<ast::Struct>(s_decos, members);
ast::type::StructType s("Data", str);
ast::type::AccessControlType ac(ast::AccessControl::kReadWrite, &s);
auto* data_var = create<ast::DecoratedVariable>(
create<ast::Variable>("data", ast::StorageClass::kStorageBuffer, &ac));
ast::VariableDecorationList decos;
decos.push_back(create<ast::BindingDecoration>(0, Source{}));
decos.push_back(create<ast::SetDecoration>(0, Source{}));
data_var->set_decorations(decos);
mod.AddConstructedType(&s);
td.RegisterVariableForTesting(data_var);
mod.AddGlobalVariable(data_var);
{
ast::VariableList params;
auto* var = create<ast::Variable>("v", ast::StorageClass::kFunction, &f32);
var->set_constructor(create<ast::MemberAccessorExpression>(
create<ast::IdentifierExpression>("data"),
create<ast::IdentifierExpression>("d")));
auto* body = create<ast::BlockStatement>();
body->append(create<ast::VariableDeclStatement>(var));
body->append(create<ast::ReturnStatement>());
auto* func = create<ast::Function>("a", params, &void_type, body);
func->add_decoration(
create<ast::StageDecoration>(ast::PipelineStage::kCompute, Source{}));
mod.AddFunction(func);
}
{
ast::VariableList params;
auto* var = create<ast::Variable>("v", ast::StorageClass::kFunction, &f32);
var->set_constructor(create<ast::MemberAccessorExpression>(
create<ast::IdentifierExpression>("data"),
create<ast::IdentifierExpression>("d")));
auto* body = create<ast::BlockStatement>();
body->append(create<ast::VariableDeclStatement>(var));
body->append(create<ast::ReturnStatement>());
auto* func = create<ast::Function>("b", params, &void_type, body);
func->add_decoration(
create<ast::StageDecoration>(ast::PipelineStage::kCompute, Source{}));
mod.AddFunction(func);
}
ASSERT_TRUE(td.Determine()) << td.error();
ASSERT_TRUE(gen.Generate(mod)) << gen.error();
EXPECT_EQ(gen.result(), R"([[block]]
struct Data {
[[offset(0)]]
d : f32;
};
[[binding(0), set(0)]] var<storage_buffer> data : [[access(read_write)]]
Data;
[[stage(compute)]]
fn a() -> void {
var v : f32 = data.d;
return;
}
[[stage(compute)]]
fn b() -> void {
var v : f32 = data.d;
return;
}
)");
}
} // namespace
} // namespace wgsl
} // namespace writer
} // namespace tint