116 lines
5.1 KiB
C#
116 lines
5.1 KiB
C#
// Copyright (C) 2026 SharpEmu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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using System.Buffers.Binary;
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using SharpEmu.Libs.Gpu.Buffers;
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using SharpEmu.Libs.Tests.Gpu.Images;
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using SharpEmu.ShaderCompiler;
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using SharpEmu.ShaderCompiler.Resources;
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using SharpEmu.ShaderCompiler.Vulkan;
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using Xunit;
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using Xunit.Abstractions;
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using static SharpEmu.ShaderCompiler.Tests.Resources.ResourceTestProgram;
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namespace SharpEmu.Libs.Tests.Gpu.Vulkan;
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public sealed class WaveShuffleDeviceTests(HeadlessVulkanFixture fixture, ITestOutputHelper output)
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: IClassFixture<HeadlessVulkanFixture>
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{
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[Theory]
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[InlineData("Dpp8", false)]
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[InlineData("Dpp16", false)]
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[InlineData("Permlane16", false)]
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[InlineData("Permlanex16", false)]
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[InlineData("Reduction", false)]
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[InlineData("Dpp8", true)]
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[InlineData("Dpp16", true)]
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[InlineData("Permlane16", true)]
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[InlineData("Permlanex16", true)]
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[InlineData("Reduction", true)]
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public void Wave64Shuffle_PreservesUpperHalf(string operation, bool hostSubgroup32)
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{
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var vulkan = fixture.Vulkan;
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if (!GatePrerequisites.Ready(vulkan, shaderInt64: true)) return;
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var instructions = new List<Gen5ShaderInstruction>();
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uint pc = 0;
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void Add(Gen5ShaderInstruction instruction)
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{
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instructions.Add(instruction with { Pc = pc });
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pc += 8;
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}
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Add(Vop2(0, "VLshlrevB32", 2, Operand(3), Gen5Operand.Vector(1)));
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Add(Vop2(0, "VAddI32", 2, Gen5Operand.Vector(0), Gen5Operand.Vector(2)));
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Add(Vop2(0, "VAddI32", 3, Operand(1), Gen5Operand.Vector(2)));
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switch (operation)
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{
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case "Dpp8":
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Add(Vop1(0, "VMovB32", 4, Gen5Operand.Vector(3)) with
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{
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Control = new Gen5Dpp8Control(0x053977, FetchInactive: true), // Reverse each eight lanes.
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});
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break;
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case "Dpp16":
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Add(Vop1(0, "VMovB32", 4, Gen5Operand.Vector(3)) with
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{
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Control = new Gen5DppControl(0x140, true, false, 0, 0, 15, 15),
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});
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break;
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case "Permlane16":
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case "Permlanex16":
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Add(Vop3(0, operation == "Permlane16" ? "VPermlane16B32" : "VPermlanex16B32",
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4, Gen5Operand.Vector(3), Operand(uint.MaxValue), Operand(uint.MaxValue)));
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break;
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case "Reduction":
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// The game's tile histogram sums four rows, then combines lanes 31 and 63.
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Add(Vop1(0, "VMovB32", 4, Gen5Operand.Vector(3)));
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foreach (var shift in new uint[] { 1, 2, 4, 8 })
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Add(Vop2(0, "VAddU32", 4, Gen5Operand.Vector(4), Gen5Operand.Vector(4)) with
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{
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Control = new Gen5DppControl(0x110 + shift, false, false, 0, 0, 15, 15),
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});
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Add(Vop3(0, "VPermlanex16B32", 3,
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Gen5Operand.Vector(4), Operand(uint.MaxValue), Operand(uint.MaxValue)));
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Add(Vop2(0, "VAddU32", 4, Gen5Operand.Vector(4), Gen5Operand.Vector(3)));
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Add(ReadLane(0, 20, 4, 31));
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Add(ReadLane(0, 21, 4, 63));
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Add(Sop2(0, "SAddU32", 22, Gen5Operand.Scalar(20), Gen5Operand.Scalar(21)));
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Add(MoveVectorFromScalar(0, 4, 22));
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break;
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}
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Add(Vop2(0, "VLshlrevB32", 5, Operand(2), Gen5Operand.Vector(2)));
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Add(BufferAccess(0, "BufferStoreDword", 4, vectorData: 4, offsetEnabled: true, vectorAddress: 5));
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Add(EndProgram(0));
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var (plan, resources, layout) = Prepare(Program([.. instructions]));
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var request = new ShaderCompileRequest(plan, resources, layout)
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{
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LocalSizeX = 8, LocalSizeY = 8, ThreadCountX = 8, ThreadCountY = 8, WaveSize = 64,
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HostComputeSubgroup32 = hostSubgroup32,
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};
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Assert.True(Gen5SpirvTranslator.TryCompileProgram(request, out var shader, out var error), error);
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using var harness = new ImageTestHarness(vulkan);
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using var runner = new LayoutComputeRunner(harness, request, shader.Spirv);
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var result = runner.CreateBuffer(256);
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var registers = new uint[256];
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registers[6] = 256;
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harness.Run(() => runner.Dispatch(registers,
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new Dictionary<DescriptorBindingKind, GpuBuffer[]> { [DescriptorBindingKind.Buffers] = [result] }, 1));
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var actual = runner.ReadBack(result, 0, 256);
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for (uint lane = 0; lane < 64; lane++)
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{
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var expected = operation switch
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{
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"Dpp8" => (lane ^ 7) + 1,
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"Dpp16" => (lane ^ 15) + 1,
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"Permlane16" => (lane & ~15u) + 16,
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"Permlanex16" => ((lane & ~15u) ^ 16) + 16,
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"Reduction" => 64u * 65 / 2,
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_ => throw new ArgumentOutOfRangeException(nameof(operation)),
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};
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Assert.Equal(expected, BinaryPrimitives.ReadUInt32LittleEndian(actual.AsSpan((int)lane * 4)));
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}
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harness.AssertNoValidationMessages();
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output.WriteLine($"Verified {operation} on {vulkan.DeviceName}.");
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}
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}
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