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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/transform/decompose_strided_matrix.h"
#include <memory>
#include <utility>
#include <vector>
#include "src/tint/ast/disable_validation_attribute.h"
#include "src/tint/program_builder.h"
#include "src/tint/transform/simplify_pointers.h"
#include "src/tint/transform/test_helper.h"
#include "src/tint/transform/unshadow.h"
namespace tint::transform {
namespace {
using DecomposeStridedMatrixTest = TransformTest;
using f32 = ProgramBuilder::f32;
TEST_F(DecomposeStridedMatrixTest, ShouldRunEmptyModule) {
auto* src = R"()";
EXPECT_FALSE(ShouldRun<DecomposeStridedMatrix>(src));
}
TEST_F(DecomposeStridedMatrixTest, ShouldRunNonStridedMatrox) {
auto* src = R"(
var<private> m : mat3x2<f32>;
)";
EXPECT_FALSE(ShouldRun<DecomposeStridedMatrix>(src));
}
TEST_F(DecomposeStridedMatrixTest, Empty) {
auto* src = R"()";
auto* expect = src;
auto got = Run<DecomposeStridedMatrix>(src);
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, ReadUniformMatrix) {
// struct S {
// @offset(16) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<uniform> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// let x : mat2x2<f32> = s.m;
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(16),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kUniform, b.GroupAndBinding(0, 0));
b.Func("f", {}, b.ty.void_(),
{
b.Decl(b.Let("x", b.ty.mat2x2<f32>(), b.MemberAccessor("s", "m"))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(16)
padding : u32,
m : @stride(32) array<vec2<f32>, 2u>,
}
@group(0) @binding(0) var<uniform> s : S;
fn arr_to_mat2x2_stride_32(arr : @stride(32) array<vec2<f32>, 2u>) -> mat2x2<f32> {
return mat2x2<f32>(arr[0u], arr[1u]);
}
@stage(compute) @workgroup_size(1)
fn f() {
let x : mat2x2<f32> = arr_to_mat2x2_stride_32(s.m);
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, ReadUniformColumn) {
// struct S {
// @offset(16) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<uniform> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// let x : vec2<f32> = s.m[1];
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(16),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kUniform, b.GroupAndBinding(0, 0));
b.Func("f", {}, b.ty.void_(),
{
b.Decl(b.Let("x", b.ty.vec2<f32>(), b.IndexAccessor(b.MemberAccessor("s", "m"), 1))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(16)
padding : u32,
m : @stride(32) array<vec2<f32>, 2u>,
}
@group(0) @binding(0) var<uniform> s : S;
@stage(compute) @workgroup_size(1)
fn f() {
let x : vec2<f32> = s.m[1];
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, ReadUniformMatrix_DefaultStride) {
// struct S {
// @offset(16) @stride(8)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<uniform> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// let x : mat2x2<f32> = s.m;
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(16),
b.create<ast::StrideAttribute>(8),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kUniform, b.GroupAndBinding(0, 0));
b.Func("f", {}, b.ty.void_(),
{
b.Decl(b.Let("x", b.ty.mat2x2<f32>(), b.MemberAccessor("s", "m"))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(16)
padding : u32,
@stride(8) @internal(disable_validation__ignore_stride)
m : mat2x2<f32>,
}
@group(0) @binding(0) var<uniform> s : S;
@stage(compute) @workgroup_size(1)
fn f() {
let x : mat2x2<f32> = s.m;
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, ReadStorageMatrix) {
// struct S {
// @offset(8) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<storage, read_write> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// let x : mat2x2<f32> = s.m;
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(8),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kStorage, ast::Access::kReadWrite,
b.GroupAndBinding(0, 0));
b.Func("f", {}, b.ty.void_(),
{
b.Decl(b.Let("x", b.ty.mat2x2<f32>(), b.MemberAccessor("s", "m"))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(8)
padding : u32,
m : @stride(32) array<vec2<f32>, 2u>,
}
@group(0) @binding(0) var<storage, read_write> s : S;
fn arr_to_mat2x2_stride_32(arr : @stride(32) array<vec2<f32>, 2u>) -> mat2x2<f32> {
return mat2x2<f32>(arr[0u], arr[1u]);
}
@stage(compute) @workgroup_size(1)
fn f() {
let x : mat2x2<f32> = arr_to_mat2x2_stride_32(s.m);
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, ReadStorageColumn) {
// struct S {
// @offset(16) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<storage, read_write> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// let x : vec2<f32> = s.m[1];
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(16),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kStorage, ast::Access::kReadWrite,
b.GroupAndBinding(0, 0));
b.Func("f", {}, b.ty.void_(),
{
b.Decl(b.Let("x", b.ty.vec2<f32>(), b.IndexAccessor(b.MemberAccessor("s", "m"), 1))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(16)
padding : u32,
m : @stride(32) array<vec2<f32>, 2u>,
}
@group(0) @binding(0) var<storage, read_write> s : S;
@stage(compute) @workgroup_size(1)
fn f() {
let x : vec2<f32> = s.m[1];
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, WriteStorageMatrix) {
// struct S {
// @offset(8) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<storage, read_write> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// s.m = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(8),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kStorage, ast::Access::kReadWrite,
b.GroupAndBinding(0, 0));
b.Func("f", {}, b.ty.void_(),
{
b.Assign(b.MemberAccessor("s", "m"),
b.mat2x2<f32>(b.vec2<f32>(1.0f, 2.0f), b.vec2<f32>(3.0f, 4.0f))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(8)
padding : u32,
m : @stride(32) array<vec2<f32>, 2u>,
}
@group(0) @binding(0) var<storage, read_write> s : S;
fn mat2x2_stride_32_to_arr(m : mat2x2<f32>) -> @stride(32) array<vec2<f32>, 2u> {
return @stride(32) array<vec2<f32>, 2u>(m[0u], m[1u]);
}
@stage(compute) @workgroup_size(1)
fn f() {
s.m = mat2x2_stride_32_to_arr(mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0)));
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, WriteStorageColumn) {
// struct S {
// @offset(8) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<storage, read_write> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// s.m[1] = vec2<f32>(1.0, 2.0);
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(8),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kStorage, ast::Access::kReadWrite,
b.GroupAndBinding(0, 0));
b.Func("f", {}, b.ty.void_(),
{
b.Assign(b.IndexAccessor(b.MemberAccessor("s", "m"), 1), b.vec2<f32>(1.0f, 2.0f)),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(8)
padding : u32,
m : @stride(32) array<vec2<f32>, 2u>,
}
@group(0) @binding(0) var<storage, read_write> s : S;
@stage(compute) @workgroup_size(1)
fn f() {
s.m[1] = vec2<f32>(1.0, 2.0);
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, ReadWriteViaPointerLets) {
// struct S {
// @offset(8) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// @group(0) @binding(0) var<storage, read_write> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// let a = &s.m;
// let b = &*&*(a);
// let x = *b;
// let y = (*b)[1];
// let z = x[1];
// (*b) = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
// (*b)[1] = vec2<f32>(5.0, 6.0);
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(8),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kStorage, ast::Access::kReadWrite,
b.GroupAndBinding(0, 0));
b.Func(
"f", {}, b.ty.void_(),
{
b.Decl(b.Let("a", nullptr, b.AddressOf(b.MemberAccessor("s", "m")))),
b.Decl(b.Let("b", nullptr, b.AddressOf(b.Deref(b.AddressOf(b.Deref("a")))))),
b.Decl(b.Let("x", nullptr, b.Deref("b"))),
b.Decl(b.Let("y", nullptr, b.IndexAccessor(b.Deref("b"), 1))),
b.Decl(b.Let("z", nullptr, b.IndexAccessor("x", 1))),
b.Assign(b.Deref("b"), b.mat2x2<f32>(b.vec2<f32>(1.0f, 2.0f), b.vec2<f32>(3.0f, 4.0f))),
b.Assign(b.IndexAccessor(b.Deref("b"), 1), b.vec2<f32>(5.0f, 6.0f)),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(8)
padding : u32,
m : @stride(32) array<vec2<f32>, 2u>,
}
@group(0) @binding(0) var<storage, read_write> s : S;
fn arr_to_mat2x2_stride_32(arr : @stride(32) array<vec2<f32>, 2u>) -> mat2x2<f32> {
return mat2x2<f32>(arr[0u], arr[1u]);
}
fn mat2x2_stride_32_to_arr(m : mat2x2<f32>) -> @stride(32) array<vec2<f32>, 2u> {
return @stride(32) array<vec2<f32>, 2u>(m[0u], m[1u]);
}
@stage(compute) @workgroup_size(1)
fn f() {
let x = arr_to_mat2x2_stride_32(s.m);
let y = s.m[1];
let z = x[1];
s.m = mat2x2_stride_32_to_arr(mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0)));
s.m[1] = vec2<f32>(5.0, 6.0);
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, ReadPrivateMatrix) {
// struct S {
// @offset(8) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// var<private> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// let x : mat2x2<f32> = s.m;
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(8),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kPrivate);
b.Func("f", {}, b.ty.void_(),
{
b.Decl(b.Let("x", b.ty.mat2x2<f32>(), b.MemberAccessor("s", "m"))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(8)
padding : u32,
@stride(32) @internal(disable_validation__ignore_stride)
m : mat2x2<f32>,
}
var<private> s : S;
@stage(compute) @workgroup_size(1)
fn f() {
let x : mat2x2<f32> = s.m;
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
TEST_F(DecomposeStridedMatrixTest, WritePrivateMatrix) {
// struct S {
// @offset(8) @stride(32)
// @internal(ignore_stride_attribute)
// m : mat2x2<f32>,
// };
// var<private> s : S;
//
// @stage(compute) @workgroup_size(1)
// fn f() {
// s.m = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
// }
ProgramBuilder b;
auto* S = b.Structure(
"S", {
b.Member("m", b.ty.mat2x2<f32>(),
{
b.create<ast::StructMemberOffsetAttribute>(8),
b.create<ast::StrideAttribute>(32),
b.Disable(ast::DisabledValidation::kIgnoreStrideAttribute),
}),
});
b.Global("s", b.ty.Of(S), ast::StorageClass::kPrivate);
b.Func("f", {}, b.ty.void_(),
{
b.Assign(b.MemberAccessor("s", "m"),
b.mat2x2<f32>(b.vec2<f32>(1.0f, 2.0f), b.vec2<f32>(3.0f, 4.0f))),
},
{
b.Stage(ast::PipelineStage::kCompute),
b.WorkgroupSize(1),
});
auto* expect = R"(
struct S {
@size(8)
padding : u32,
@stride(32) @internal(disable_validation__ignore_stride)
m : mat2x2<f32>,
}
var<private> s : S;
@stage(compute) @workgroup_size(1)
fn f() {
s.m = mat2x2<f32>(vec2<f32>(1.0, 2.0), vec2<f32>(3.0, 4.0));
}
)";
auto got = Run<Unshadow, SimplifyPointers, DecomposeStridedMatrix>(Program(std::move(b)));
EXPECT_EQ(expect, str(got));
}
} // namespace
} // namespace tint::transform