116 lines
5.0 KiB
C#
116 lines
5.0 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.HLE;
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using SharpEmu.ShaderCompiler.Metal;
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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 static SharpEmu.ShaderCompiler.Tests.Resources.ResourceTestProgram;
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namespace SharpEmu.ShaderCompiler.Tests;
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public sealed class Gen5SignedMultiply24Tests
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{
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public static TheoryData<uint, uint, uint> Products => new()
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{
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{ 0, 0xFFFFFF, 0 },
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{ 19, 7, 133 },
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{ 0xFFFFFF, 2, 0xFFFFFFFE },
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{ 2, 0xFFFFFF, 0xFFFFFFFE },
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{ 0xFFFFFE, 0xFFFFFD, 6 },
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{ 0x800000, 1, 0xFF800000 },
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{ 0x7FFFFF, 0x7FFFFF, 0xFF000001 },
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{ 0x800000, 0x800000, 0 },
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{ 0xAA000003, 0xBBFFFFFE, 0xFFFFFFFA },
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};
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[Fact]
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public void DecodeReportedWord()
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{
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var instruction = Decode(0x120C1693);
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Assert.Equal("VMulI32I24", instruction.Opcode);
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Assert.Equal(Gen5Operand.Source(147), instruction.Sources[0]);
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Assert.Equal(Gen5Operand.Vector(11), instruction.Sources[1]);
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Assert.Equal(Gen5Operand.Vector(6), Assert.Single(instruction.Destinations));
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}
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[Fact]
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public void DecodeLiteralSource()
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{
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var instruction = Decode(0x120C06FF, 0xAAFFFFFE);
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Assert.Equal("VMulI32I24", instruction.Opcode);
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Assert.Equal(new Gen5Operand(Gen5OperandKind.LiteralConstant, 0xAAFFFFFE), instruction.Sources[0]);
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}
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[Theory]
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[InlineData(false)]
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[InlineData(true)]
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public void BothEncodingsCompileOnBothBackends(bool extendedEncoding)
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{
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var program = CreateReadbackProgram(extendedEncoding, true);
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var multiply = Assert.Single(program.Instructions, instruction => instruction.Opcode == "VMulI32I24");
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Assert.Equal(extendedEncoding ? Gen5ShaderEncoding.Vop3 : Gen5ShaderEncoding.Vop2, multiply.Encoding);
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var (plan, resources, layout) = Prepare(program);
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var request = new ShaderCompileRequest(plan, resources, layout) { LocalSizeX = 1, ThreadCountX = 1 };
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Assert.True(Gen5SpirvTranslator.TryCompileProgram(request, out _, out var spirvError), spirvError);
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Assert.True(Gen5MslTranslator.TryCompileProgram(request, out var metalShader, out var metalError), metalError);
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Assert.Contains("<< 8u", metalShader.Source);
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Assert.Contains(">> 8", metalShader.Source);
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}
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[Theory]
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[MemberData(nameof(Products))]
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public void ResourceEvaluationUsesSignedLow24Bits(uint left, uint right, uint expected)
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{
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var program = Program(
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MoveVectorFromScalar(0, 2, 8), MoveVectorFromScalar(4, 3, 9),
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Decode(0x120C0702) with { Pc = 8 },
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Vop1(12, "VReadfirstlaneB32", 4, Gen5Operand.Vector(6)) with { Destinations = [Gen5Operand.Scalar(4)] },
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MoveScalar(16, 5, 0), MoveScalar(20, 6, 16), MoveScalar(24, 7, 0),
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BufferLoad(28, 4), EndProgram(36));
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var plan = Extract(program);
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var registers = new uint[16];
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registers[8] = left;
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registers[9] = right;
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Assert.True(RuntimeValueEvaluator.EvaluateDescriptorSource(plan, plan.Info.Buffers[0].Source,
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Inputs(registers), out var result));
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Assert.Equal(expected, result.Dwords[0]);
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}
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public static Gen5ShaderProgram CreateReadbackProgram(bool extendedEncoding, bool multiplyEnabled)
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{
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var multiply = extendedEncoding ? Decode(0xD5090006, 0x00020702) : Decode(0x120C0702);
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return Program(
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MoveVectorFromScalar(0, 2, 8), MoveVectorFromScalar(4, 3, 9),
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MoveVector(8, 6, 0xCAFEBABE), MoveScalar(12, 126, multiplyEnabled ? 1u : 0u),
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multiply with { Pc = 16 }, MoveScalar(24, 126, 1),
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BufferAccess(28, "BufferStoreDword", 4, vectorData: 6), EndProgram(36));
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}
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private static Gen5ShaderInstruction Decode(params uint[] instructionWords)
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{
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var bytes = new byte[(instructionWords.Length + 1) * sizeof(uint)];
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for (var index = 0; index < instructionWords.Length; index++)
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BinaryPrimitives.WriteUInt32LittleEndian(bytes.AsSpan(index * sizeof(uint)), instructionWords[index]);
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BinaryPrimitives.WriteUInt32LittleEndian(bytes.AsSpan(instructionWords.Length * sizeof(uint)), 0xBF810000);
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var context = new CpuContext(new InstructionMemory(bytes), Generation.Gen5);
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Assert.True(Gen5ShaderTranslator.TryDecodeProgram(context, 0x1000, out var program, out var error), error);
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return program.Instructions[0];
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}
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private sealed class InstructionMemory(byte[] bytes) : ICpuMemory
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{
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public bool TryRead(ulong address, Span<byte> destination)
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{
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if (address < 0x1000 || destination.Length > bytes.Length ||
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address - 0x1000 > (ulong)(bytes.Length - destination.Length)) return false;
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bytes.AsSpan((int)(address - 0x1000), destination.Length).CopyTo(destination);
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return true;
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}
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public bool TryWrite(ulong address, ReadOnlySpan<byte> source) => false;
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}
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}
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