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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 "gmock/gmock.h"
#include "src/ast/call_statement.h"
#include "src/ast/stage_attribute.h"
#include "src/ast/struct_block_attribute.h"
#include "src/ast/variable_decl_statement.h"
#include "src/writer/msl/test_helper.h"
namespace tint {
namespace writer {
namespace msl {
namespace {
using ::testing::HasSubstr;
using MslSanitizerTest = TestHelper;
TEST_F(MslSanitizerTest, Call_ArrayLength) {
auto* s = Structure("my_struct", {Member(0, "a", ty.array<f32>(4))},
{create<ast::StructBlockAttribute>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(1),
create<ast::GroupAttribute>(2),
});
Func("a_func", ast::VariableList{}, ty.void_(),
ast::StatementList{
Decl(Var("len", ty.u32(), ast::StorageClass::kNone,
Call("arrayLength", AddressOf(MemberAccessor("b", "a"))))),
},
ast::AttributeList{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(#include <metal_stdlib>
using namespace metal;
struct tint_symbol {
/* 0x0000 */ uint4 buffer_size[1];
};
struct my_struct {
float a[1];
};
fragment void a_func(const constant tint_symbol* tint_symbol_2 [[buffer(30)]]) {
uint len = (((*(tint_symbol_2)).buffer_size[0u][1u] - 0u) / 4u);
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(MslSanitizerTest, Call_ArrayLength_OtherMembersInStruct) {
auto* s = Structure("my_struct",
{
Member(0, "z", ty.f32()),
Member(4, "a", ty.array<f32>(4)),
},
{create<ast::StructBlockAttribute>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(1),
create<ast::GroupAttribute>(2),
});
Func("a_func", ast::VariableList{}, ty.void_(),
ast::StatementList{
Decl(Var("len", ty.u32(), ast::StorageClass::kNone,
Call("arrayLength", AddressOf(MemberAccessor("b", "a"))))),
},
ast::AttributeList{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(#include <metal_stdlib>
using namespace metal;
struct tint_symbol {
/* 0x0000 */ uint4 buffer_size[1];
};
struct my_struct {
float z;
float a[1];
};
fragment void a_func(const constant tint_symbol* tint_symbol_2 [[buffer(30)]]) {
uint len = (((*(tint_symbol_2)).buffer_size[0u][1u] - 4u) / 4u);
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(MslSanitizerTest, Call_ArrayLength_ViaLets) {
auto* s = Structure("my_struct", {Member(0, "a", ty.array<f32>(4))},
{create<ast::StructBlockAttribute>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(1),
create<ast::GroupAttribute>(2),
});
auto* p = Const("p", nullptr, AddressOf("b"));
auto* p2 = Const("p2", nullptr, AddressOf(MemberAccessor(Deref(p), "a")));
Func("a_func", ast::VariableList{}, ty.void_(),
ast::StatementList{
Decl(p),
Decl(p2),
Decl(Var("len", ty.u32(), ast::StorageClass::kNone,
Call("arrayLength", p2))),
},
ast::AttributeList{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(#include <metal_stdlib>
using namespace metal;
struct tint_symbol {
/* 0x0000 */ uint4 buffer_size[1];
};
struct my_struct {
float a[1];
};
fragment void a_func(const constant tint_symbol* tint_symbol_2 [[buffer(30)]]) {
uint len = (((*(tint_symbol_2)).buffer_size[0u][1u] - 0u) / 4u);
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(MslSanitizerTest, Call_ArrayLength_ArrayLengthFromUniform) {
auto* s = Structure("my_struct", {Member(0, "a", ty.array<f32>(4))},
{create<ast::StructBlockAttribute>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(1),
create<ast::GroupAttribute>(0),
});
Global("c", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(2),
create<ast::GroupAttribute>(0),
});
Func("a_func", ast::VariableList{}, ty.void_(),
ast::StatementList{
Decl(Var(
"len", ty.u32(), ast::StorageClass::kNone,
Add(Call("arrayLength", AddressOf(MemberAccessor("b", "a"))),
Call("arrayLength", AddressOf(MemberAccessor("c", "a")))))),
},
ast::AttributeList{
Stage(ast::PipelineStage::kFragment),
});
Options options;
options.array_length_from_uniform.ubo_binding = {0, 29};
options.array_length_from_uniform.bindpoint_to_size_index.emplace(
sem::BindingPoint{0, 1}, 7u);
options.array_length_from_uniform.bindpoint_to_size_index.emplace(
sem::BindingPoint{0, 2}, 2u);
GeneratorImpl& gen = SanitizeAndBuild(options);
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(#include <metal_stdlib>
using namespace metal;
struct tint_symbol {
/* 0x0000 */ uint4 buffer_size[2];
};
struct my_struct {
float a[1];
};
fragment void a_func(const constant tint_symbol* tint_symbol_2 [[buffer(29)]]) {
uint len = ((((*(tint_symbol_2)).buffer_size[1u][3u] - 0u) / 4u) + (((*(tint_symbol_2)).buffer_size[0u][2u] - 0u) / 4u));
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(MslSanitizerTest,
Call_ArrayLength_ArrayLengthFromUniformMissingBinding) {
auto* s = Structure("my_struct", {Member(0, "a", ty.array<f32>(4))},
{create<ast::StructBlockAttribute>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(1),
create<ast::GroupAttribute>(0),
});
Global("c", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(2),
create<ast::GroupAttribute>(0),
});
Func("a_func", ast::VariableList{}, ty.void_(),
ast::StatementList{
Decl(Var(
"len", ty.u32(), ast::StorageClass::kNone,
Add(Call("arrayLength", AddressOf(MemberAccessor("b", "a"))),
Call("arrayLength", AddressOf(MemberAccessor("c", "a")))))),
},
ast::AttributeList{
Stage(ast::PipelineStage::kFragment),
});
Options options;
options.array_length_from_uniform.ubo_binding = {0, 29};
options.array_length_from_uniform.bindpoint_to_size_index.emplace(
sem::BindingPoint{0, 2}, 2u);
GeneratorImpl& gen = SanitizeAndBuild(options);
ASSERT_FALSE(gen.Generate());
EXPECT_THAT(gen.error(),
HasSubstr("Unable to translate builtin: arrayLength"));
}
} // namespace
} // namespace msl
} // namespace writer
} // namespace tint