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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/tint/ast/call_statement.h"
#include "src/tint/ast/stage_attribute.h"
#include "src/tint/ast/variable_decl_statement.h"
#include "src/tint/writer/hlsl/test_helper.h"
using namespace tint::number_suffixes; // NOLINT
namespace tint::writer::hlsl {
namespace {
using HlslSanitizerTest = TestHelper;
TEST_F(HlslSanitizerTest, Call_ArrayLength) {
auto* s = Structure("my_struct", utils::Vector{Member(0, "a", ty.array<f32>())});
GlobalVar("b", ty.Of(s), builtin::AddressSpace::kStorage, builtin::Access::kRead, Binding(1_a),
Group(2_a));
Func("a_func", utils::Empty, ty.void_(),
utils::Vector{
Decl(Var("len", ty.u32(), Call("arrayLength", AddressOf(MemberAccessor("b", "a"))))),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
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", utils::Vector{
Member(0, "z", ty.f32()),
Member(4, "a", ty.array<f32>()),
});
GlobalVar("b", ty.Of(s), builtin::AddressSpace::kStorage, builtin::Access::kRead, Binding(1_a),
Group(2_a));
Func("a_func", utils::Empty, ty.void_(),
utils::Vector{
Decl(Var("len", ty.u32(), Call("arrayLength", AddressOf(MemberAccessor("b", "a"))))),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
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", utils::Vector{Member(0, "a", ty.array<f32>())});
GlobalVar("b", ty.Of(s), builtin::AddressSpace::kStorage, builtin::Access::kRead, Binding(1_a),
Group(2_a));
auto* p = Let("p", AddressOf("b"));
auto* p2 = Let("p2", AddressOf(MemberAccessor(Deref(p), "a")));
Func("a_func", utils::Empty, ty.void_(),
utils::Vector{
Decl(p),
Decl(p2),
Decl(Var("len", ty.u32(), Call("arrayLength", p2))),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
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_ArrayLengthFromUniform) {
auto* s = Structure("my_struct", utils::Vector{Member(0, "a", ty.array<f32>())});
GlobalVar("b", ty.Of(s), builtin::AddressSpace::kStorage, builtin::Access::kRead, Binding(1_a),
Group(2_a));
GlobalVar("c", ty.Of(s), builtin::AddressSpace::kStorage, builtin::Access::kRead, Binding(2_a),
Group(2_a));
Func("a_func", utils::Empty, ty.void_(),
utils::Vector{
Decl(Var("len", ty.u32(),
Add(Call("arrayLength", AddressOf(MemberAccessor("b", "a"))),
Call("arrayLength", AddressOf(MemberAccessor("c", "a")))))),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
Options options;
options.array_length_from_uniform.ubo_binding = {3, 4};
options.array_length_from_uniform.bindpoint_to_size_index.emplace(sem::BindingPoint{2, 2}, 7u);
GeneratorImpl& gen = SanitizeAndBuild(options);
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
auto got = gen.result();
auto* expect = R"(cbuffer cbuffer_tint_symbol_1 : register(b4, space3) {
uint4 tint_symbol_1[2];
};
ByteAddressBuffer b : register(t1, space2);
ByteAddressBuffer c : register(t2, space2);
void a_func() {
uint tint_symbol_3 = 0u;
b.GetDimensions(tint_symbol_3);
const uint tint_symbol_4 = ((tint_symbol_3 - 0u) / 4u);
uint len = (tint_symbol_4 + ((tint_symbol_1[1].w - 0u) / 4u));
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, PromoteArrayInitializerToConstVar) {
auto* array_init = array<i32, 4>(1_i, 2_i, 3_i, 4_i);
Func("main", utils::Empty, ty.void_(),
utils::Vector{
Decl(Var("idx", Expr(3_i))),
Decl(Var("pos", ty.i32(), IndexAccessor(array_init, "idx"))),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
auto got = gen.result();
auto* expect = R"(void main() {
int idx = 3;
const int tint_symbol[4] = {1, 2, 3, 4};
int pos = tint_symbol[idx];
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, PromoteStructInitializerToConstVar) {
auto* runtime_value = Var("runtime_value", Expr(3_f));
auto* str = Structure("S", utils::Vector{
Member("a", ty.i32()),
Member("b", ty.vec3<f32>()),
Member("c", ty.i32()),
});
auto* struct_init = Call(ty.Of(str), 1_i, vec3<f32>(2_f, runtime_value, 4_f), 4_i);
auto* struct_access = MemberAccessor(struct_init, "b");
auto* pos = Var("pos", ty.vec3<f32>(), struct_access);
Func("main", utils::Empty, ty.void_(),
utils::Vector{
Decl(runtime_value),
Decl(pos),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
auto got = gen.result();
auto* expect = R"(struct S {
int a;
float3 b;
int c;
};
void main() {
float runtime_value = 3.0f;
const S tint_symbol = {1, float3(2.0f, runtime_value, 4.0f), 4};
float3 pos = tint_symbol.b;
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, SimplifyPointersBasic) {
// var v : i32;
// let p : ptr<function, i32> = &v;
// let x : i32 = *p;
auto* v = Var("v", ty.i32());
auto* p = Let("p", ty.pointer<i32>(builtin::AddressSpace::kFunction), AddressOf(v));
auto* x = Var("x", ty.i32(), Deref(p));
Func("main", utils::Empty, ty.void_(),
utils::Vector{
Decl(v),
Decl(p),
Decl(x),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
auto got = gen.result();
auto* expect = R"(void main() {
int v = 0;
int x = v;
return;
}
)";
EXPECT_EQ(expect, got);
}
TEST_F(HlslSanitizerTest, SimplifyPointersComplexChain) {
// var a : array<mat4x4<f32>, 4u>;
// let ap : ptr<function, array<mat4x4<f32>, 4u>> = &a;
// let mp : ptr<function, mat4x4<f32>> = &(*ap)[3i];
// let vp : ptr<function, vec4<f32>> = &(*mp)[2i];
// let v : vec4<f32> = *vp;
auto* a = Var("a", ty.array(ty.mat4x4<f32>(), 4_u));
auto* ap =
Let("ap", ty.pointer(ty.array(ty.mat4x4<f32>(), 4_u), builtin::AddressSpace::kFunction),
AddressOf(a));
auto* mp = Let("mp", ty.pointer(ty.mat4x4<f32>(), builtin::AddressSpace::kFunction),
AddressOf(IndexAccessor(Deref(ap), 3_i)));
auto* vp = Let("vp", ty.pointer(ty.vec4<f32>(), builtin::AddressSpace::kFunction),
AddressOf(IndexAccessor(Deref(mp), 2_i)));
auto* v = Var("v", ty.vec4<f32>(), Deref(vp));
Func("main", utils::Empty, ty.void_(),
utils::Vector{
Decl(a),
Decl(ap),
Decl(mp),
Decl(vp),
Decl(v),
},
utils::Vector{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
auto got = gen.result();
auto* expect = R"(void main() {
float4x4 a[4] = (float4x4[4])0;
float4 v = a[3][2];
return;
}
)";
EXPECT_EQ(expect, got);
}
} // namespace
} // namespace tint::writer::hlsl