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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 "src/ast/call_statement.h"
#include "src/ast/stage_decoration.h"
#include "src/ast/struct_block_decoration.h"
#include "src/ast/variable_decl_statement.h"
#include "src/writer/hlsl/test_helper.h"
namespace tint {
namespace writer {
namespace hlsl {
namespace {
using HlslSanitizerTest = TestHelper;
TEST_F(HlslSanitizerTest, Call_ArrayLength) {
auto* s = Structure("my_struct", {Member(0, "a", ty.array<f32>(4))},
{create<ast::StructBlockDecoration>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::DecorationList{
create<ast::BindingDecoration>(1),
create<ast::GroupDecoration>(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::DecorationList{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(ByteAddressBuffer b : register(t1, space2);
void a_func() {
uint tint_symbol_1 = 0u;
b.GetDimensions(tint_symbol_1);
const uint tint_symbol_2 = ((tint_symbol_1 - 0u) / 4u);
uint len = tint_symbol_2;
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, Call_ArrayLength_OtherMembersInStruct) {
auto* s = Structure("my_struct",
{
Member(0, "z", ty.f32()),
Member(4, "a", ty.array<f32>(4)),
},
{create<ast::StructBlockDecoration>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::DecorationList{
create<ast::BindingDecoration>(1),
create<ast::GroupDecoration>(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::DecorationList{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(ByteAddressBuffer b : register(t1, space2);
void a_func() {
uint tint_symbol_1 = 0u;
b.GetDimensions(tint_symbol_1);
const uint tint_symbol_2 = ((tint_symbol_1 - 4u) / 4u);
uint len = tint_symbol_2;
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, Call_ArrayLength_ViaLets) {
auto* s = Structure("my_struct", {Member(0, "a", ty.array<f32>(4))},
{create<ast::StructBlockDecoration>()});
Global("b", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::DecorationList{
create<ast::BindingDecoration>(1),
create<ast::GroupDecoration>(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::DecorationList{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(ByteAddressBuffer b : register(t1, space2);
void a_func() {
uint tint_symbol_1 = 0u;
b.GetDimensions(tint_symbol_1);
const uint tint_symbol_2 = ((tint_symbol_1 - 0u) / 4u);
uint len = tint_symbol_2;
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, PromoteArrayInitializerToConstVar) {
auto* array_init = array<i32, 4>(1, 2, 3, 4);
auto* array_index = IndexAccessor(array_init, 3);
auto* pos = Var("pos", ty.i32(), ast::StorageClass::kNone, array_index);
Func("main", ast::VariableList{}, ty.void_(),
{
Decl(pos),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(void main() {
const int tint_symbol[4] = {1, 2, 3, 4};
int pos = tint_symbol[3];
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, PromoteStructInitializerToConstVar) {
auto* str = Structure("S", {
Member("a", ty.i32()),
Member("b", ty.vec3<f32>()),
Member("c", ty.i32()),
});
auto* struct_init = Construct(ty.Of(str), 1, vec3<f32>(2.f, 3.f, 4.f), 4);
auto* struct_access = MemberAccessor(struct_init, "b");
auto* pos =
Var("pos", ty.vec3<f32>(), ast::StorageClass::kNone, struct_access);
Func("main", ast::VariableList{}, ty.void_(),
{
Decl(pos),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(struct S {
int a;
float3 b;
int c;
};
void main() {
const S tint_symbol = {1, float3(2.0f, 3.0f, 4.0f), 4};
float3 pos = tint_symbol.b;
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, InlinePtrLetsBasic) {
// var v : i32;
// let p : ptr<function, i32> = &v;
// let x : i32 = *p;
auto* v = Var("v", ty.i32());
auto* p =
Const("p", ty.pointer<i32>(ast::StorageClass::kFunction), AddressOf(v));
auto* x = Var("x", ty.i32(), ast::StorageClass::kNone, Deref(p));
Func("main", ast::VariableList{}, ty.void_(),
{
Decl(v),
Decl(p),
Decl(x),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(void main() {
int v = 0;
int x = v;
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, InlinePtrLetsComplexChain) {
// var m : mat4x4<f32>;
// let mp : ptr<function, mat4x4<f32>> = &m;
// let vp : ptr<function, vec4<f32>> = &(*mp)[2];
// let fp : ptr<function, f32> = &(*vp)[1];
// let f : f32 = *fp;
auto* m = Var("m", ty.mat4x4<f32>());
auto* mp =
Const("mp", ty.pointer(ty.mat4x4<f32>(), ast::StorageClass::kFunction),
AddressOf(m));
auto* vp =
Const("vp", ty.pointer(ty.vec4<f32>(), ast::StorageClass::kFunction),
AddressOf(IndexAccessor(Deref(mp), 2)));
auto* fp = Const("fp", ty.pointer<f32>(ast::StorageClass::kFunction),
AddressOf(IndexAccessor(Deref(vp), 1)));
auto* f = Var("f", ty.f32(), ast::StorageClass::kNone, Deref(fp));
Func("main", ast::VariableList{}, ty.void_(),
{
Decl(m),
Decl(mp),
Decl(vp),
Decl(fp),
Decl(f),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
auto got = gen.result();
auto* expect = R"(void main() {
float4x4 m = float4x4(0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f);
float f = m[2][1];
return;
}
)";
EXPECT_EQ(expect, got);
}
} // namespace
} // namespace hlsl
} // namespace writer
} // namespace tint