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Add support for shader constant buffer slot indexing (#1608)

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* Add support for shader constant buffer slot indexing

* Fix typo
This commit is contained in:
gdkchan 2020-10-12 21:40:50 -03:00 committed by GitHub
parent 14fd9aa640
commit b066cfc1a3
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GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 207 additions and 66 deletions
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46
Ryujinx.Graphics.Gpu/Memory/BufferManager.cs
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@ -147,6 +147,13 @@ namespace Ryujinx.Graphics.Gpu.Memory
}
}
/// <summary>
/// Sets a transform feedback buffer on the graphics pipeline.
/// The output from the vertex transformation stages are written into the feedback buffer.
/// </summary>
/// <param name="index">Index of the transform feedback buffer</param>
/// <param name="gpuVa">Start GPU virtual address of the buffer</param>
/// <param name="size">Size in bytes of the transform feedback buffer</param>
public void SetTransformFeedbackBuffer(int index, ulong gpuVa, ulong size)
{
ulong address = TranslateAndCreateBuffer(gpuVa, size);
@ -264,6 +271,25 @@ namespace Ryujinx.Graphics.Gpu.Memory
_cpUniformBuffers.EnableMask = mask;
}
/// <summary>
/// Gets a bit mask indicating which compute uniform buffers are currently bound.
/// </summary>
/// <returns>Mask where each bit set indicates a bound constant buffer</returns>
public uint GetComputeUniformBufferUseMask()
{
uint mask = 0;
for (int i = 0; i < _cpUniformBuffers.Buffers.Length; i++)
{
if (_cpUniformBuffers.Buffers[i].Address != 0)
{
mask |= 1u << i;
}
}
return mask;
}
/// <summary>
/// Sets the enabled uniform buffers mask on the graphics pipeline.
/// Each bit set on the mask indicates that the respective buffer index is enabled.
@ -277,6 +303,26 @@ namespace Ryujinx.Graphics.Gpu.Memory
_gpUniformBuffersDirty = true;
}
/// <summary>
/// Gets a bit mask indicating which graphics uniform buffers are currently bound.
/// </summary>
/// <param name="stage">Index of the shader stage</param>
/// <returns>Mask where each bit set indicates a bound constant buffer</returns>
public uint GetGraphicsUniformBufferUseMask(int stage)
{
uint mask = 0;
for (int i = 0; i < _gpUniformBuffers[stage].Buffers.Length; i++)
{
if (_gpUniformBuffers[stage].Buffers[i].Address != 0)
{
mask |= 1u << i;
}
}
return mask;
}
/// <summary>
/// Performs address translation of the GPU virtual address, and creates a
/// new buffer, if needed, for the specified range.

11
Ryujinx.Graphics.Gpu/Shader/GpuAccessor.cs
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@ -123,6 +123,17 @@ namespace Ryujinx.Graphics.Gpu.Shader
/// <returns>Shared Memory size in bytes</returns>
public int QueryComputeSharedMemorySize() => _sharedMemorySize;
/// <summary>
/// Queries Constant Buffer usage information.
/// </summary>
/// <returns>A mask where each bit set indicates a bound constant buffer</returns>
public uint QueryConstantBufferUse()
{
return _compute
? _context.Methods.BufferManager.GetComputeUniformBufferUseMask()
: _context.Methods.BufferManager.GetGraphicsUniformBufferUseMask(_stageIndex);
}
/// <summary>
/// Queries texture target information.
/// </summary>

11
Ryujinx.Graphics.Shader/CodeGen/Glsl/CodeGenContext.cs
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@ -12,6 +12,8 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
public ShaderConfig Config { get; }
public bool CbIndexable { get; }
public List<BufferDescriptor> CBufferDescriptors { get; }
public List<BufferDescriptor> SBufferDescriptors { get; }
public List<TextureDescriptor> TextureDescriptors { get; }
@ -25,9 +27,10 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
private string _indentation;
public CodeGenContext(ShaderConfig config)
public CodeGenContext(ShaderConfig config, bool cbIndexable)
{
Config = config;
CbIndexable = cbIndexable;
CBufferDescriptors = new List<BufferDescriptor>();
SBufferDescriptors = new List<BufferDescriptor>();
@ -85,9 +88,9 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
int cBufSlot = bindless ? operand.CbufSlot : 0;
int cBufOffset = bindless ? operand.CbufOffset : 0;
return TextureDescriptors.FindIndex(descriptor =>
descriptor.Type == texOp.Type &&
descriptor.HandleIndex == texOp.Handle &&
return TextureDescriptors.FindIndex(descriptor =>
descriptor.Type == texOp.Type &&
descriptor.HandleIndex == texOp.Handle &&
descriptor.CbufSlot == cBufSlot &&
descriptor.CbufOffset == cBufOffset);
}

93
Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
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@ -213,51 +213,57 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
private static void DeclareUniforms(CodeGenContext context, StructuredProgramInfo info)
{
foreach (int cbufSlot in info.CBuffers.OrderBy(x => x))
string ubSize = "[" + NumberFormatter.FormatInt(Constants.ConstantBufferSize / 16) + "]";
if (info.UsesCbIndexing)
{
string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
ubName += "_" + DefaultNames.UniformNamePrefix + cbufSlot;
ubName += "_" + DefaultNames.UniformNamePrefix;
context.CBufferDescriptors.Add(new BufferDescriptor(ubName, cbufSlot));
string blockName = $"{ubName}_{DefaultNames.BlockSuffix}";
context.AppendLine("layout (std140) uniform " + ubName);
int maxSlot = 0;
foreach (int cbufSlot in info.CBuffers.OrderBy(x => x))
{
context.CBufferDescriptors.Add(new BufferDescriptor($"{blockName}[{cbufSlot}]", cbufSlot));
if (maxSlot < cbufSlot)
{
maxSlot = cbufSlot;
}
}
context.AppendLine("layout (std140) uniform " + blockName);
context.EnterScope();
string ubSize = "[" + NumberFormatter.FormatInt(Constants.ConstantBufferSize / 16) + "]";
context.AppendLine("vec4 " + DefaultNames.DataName + ubSize + ";");
context.AppendLine("vec4 " + OperandManager.GetUbName(context.Config.Stage, cbufSlot) + ubSize + ";");
string arraySize = NumberFormatter.FormatInt(maxSlot + 1);
context.LeaveScope(";");
context.LeaveScope($" {ubName}[{arraySize}];");
}
}
private static bool DeclareRenderScale(CodeGenContext context)
{
if ((context.Config.UsedFeatures & (FeatureFlags.FragCoordXY | FeatureFlags.IntegerSampling)) != 0)
else
{
string stage = OperandManager.GetShaderStagePrefix(context.Config.Stage);
int scaleElements = context.TextureDescriptors.Count;
if (context.Config.Stage == ShaderStage.Fragment)
foreach (int cbufSlot in info.CBuffers.OrderBy(x => x))
{
scaleElements++; // Also includes render target scale, for gl_FragCoord.
string ubName = OperandManager.GetShaderStagePrefix(context.Config.Stage);
ubName += "_" + DefaultNames.UniformNamePrefix + cbufSlot;
context.CBufferDescriptors.Add(new BufferDescriptor(ubName, cbufSlot));
context.AppendLine("layout (std140) uniform " + ubName);
context.EnterScope();
context.AppendLine("vec4 " + OperandManager.GetUbName(context.Config.Stage, cbufSlot, false) + ubSize + ";");
context.LeaveScope(";");
}
context.AppendLine($"uniform float {stage}_renderScale[{scaleElements}];");
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.IntegerSampling))
{
context.AppendLine();
AppendHelperFunction(context, $"Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_{stage}.glsl");
}
return true;
}
return false;
}
private static void DeclareStorages(CodeGenContext context, StructuredProgramInfo info)
@ -500,6 +506,33 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
}
}
private static bool DeclareRenderScale(CodeGenContext context)
{
if ((context.Config.UsedFeatures & (FeatureFlags.FragCoordXY | FeatureFlags.IntegerSampling)) != 0)
{
string stage = OperandManager.GetShaderStagePrefix(context.Config.Stage);
int scaleElements = context.TextureDescriptors.Count;
if (context.Config.Stage == ShaderStage.Fragment)
{
scaleElements++; // Also includes render target scale, for gl_FragCoord.
}
context.AppendLine($"uniform float {stage}_renderScale[{scaleElements}];");
if (context.Config.UsedFeatures.HasFlag(FeatureFlags.IntegerSampling))
{
context.AppendLine();
AppendHelperFunction(context, $"Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/TexelFetchScale_{stage}.glsl");
}
return true;
}
return false;
}
private static void AppendHelperFunction(CodeGenContext context, string filename)
{
string code = EmbeddedResources.ReadAllText(filename);

2
Ryujinx.Graphics.Shader/CodeGen/Glsl/GlslGenerator.cs
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@ -12,7 +12,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
public static GlslProgram Generate(StructuredProgramInfo info, ShaderConfig config)
{
CodeGenContext context = new CodeGenContext(config);
CodeGenContext context = new CodeGenContext(config, info.UsesCbIndexing);
Declarations.Declare(context, info);

2
Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGen.cs
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@ -19,7 +19,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
}
else if (node is AstOperand operand)
{
return context.OperandManager.GetExpression(operand, context.Config);
return context.OperandManager.GetExpression(operand, context.Config, context.CbIndexable);
}
throw new ArgumentException($"Invalid node type \"{node?.GetType().Name ?? "null"}\".");

11
Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenMemory.cs
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@ -125,7 +125,16 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
offsetExpr = Enclose(offsetExpr, src2, Instruction.ShiftRightS32, isLhs: true);
return OperandManager.GetConstantBufferName(src1, offsetExpr, context.Config.Stage);
if (src1 is AstOperand oper && oper.Type == OperandType.Constant)
{
return OperandManager.GetConstantBufferName(oper.Value, offsetExpr, context.Config.Stage, context.CbIndexable);
}
else
{
string slotExpr = GetSoureExpr(context, src1, GetSrcVarType(operation.Inst, 0));
return OperandManager.GetConstantBufferName(slotExpr, offsetExpr, context.Config.Stage);
}
}
public static string LoadLocal(CodeGenContext context, AstOperation operation)

42
Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs
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@ -92,7 +92,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
return name;
}
public string GetExpression(AstOperand operand, ShaderConfig config)
public string GetExpression(AstOperand operand, ShaderConfig config, bool cbIndexable)
{
switch (operand.Type)
{
@ -103,7 +103,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
return NumberFormatter.FormatInt(operand.Value);
case OperandType.ConstantBuffer:
return GetConstantBufferName(operand.CbufSlot, operand.CbufOffset, config.Stage);
return GetConstantBufferName(operand.CbufSlot, operand.CbufOffset, config.Stage, cbIndexable);
case OperandType.LocalVariable:
return _locals[operand];
@ -115,13 +115,9 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
throw new ArgumentException($"Invalid operand type \"{operand.Type}\".");
}
public static string GetConstantBufferName(int slot, int offset, ShaderStage stage)
public static string GetConstantBufferName(int slot, int offset, ShaderStage stage, bool cbIndexable)
{
string ubName = GetUbName(stage, slot);
ubName += "[" + (offset >> 2) + "]";
return ubName + "." + GetSwizzleMask(offset & 3);
return $"{GetUbName(stage, slot, cbIndexable)}[{offset >> 2}].{GetSwizzleMask(offset & 3)}";
}
private static string GetVec4Indexed(string vectorName, string indexExpr)
@ -134,18 +130,14 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
return $"({result})";
}
public static string GetConstantBufferName(IAstNode slot, string offsetExpr, ShaderStage stage)
public static string GetConstantBufferName(int slot, string offsetExpr, ShaderStage stage, bool cbIndexable)
{
// Non-constant slots are not supported.
// It is expected that upstream stages are never going to generate non-constant
// slot access.
AstOperand operand = (AstOperand)slot;
return GetVec4Indexed(GetUbName(stage, slot, cbIndexable) + $"[{offsetExpr} >> 2]", offsetExpr + " & 3");
}
string ubName = GetUbName(stage, operand.Value);
string index0 = "[" + offsetExpr + " >> 2]";
return GetVec4Indexed(ubName + index0, offsetExpr + " & 3");
public static string GetConstantBufferName(string slotExpr, string offsetExpr, ShaderStage stage)
{
return GetVec4Indexed(GetUbName(stage, slotExpr) + $"[{offsetExpr} >> 2]", offsetExpr + " & 3");
}
public static string GetOutAttributeName(AstOperand attr, ShaderConfig config)
@ -228,13 +220,19 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
return isOutAttr ? "// bad_attr0x" + value.ToString("X") : "0.0";
}
public static string GetUbName(ShaderStage stage, int slot)
public static string GetUbName(ShaderStage stage, int slot, bool cbIndexable)
{
string ubName = GetShaderStagePrefix(stage);
if (cbIndexable)
{
return GetUbName(stage, NumberFormatter.FormatInt(slot, VariableType.S32));
}
ubName += "_" + DefaultNames.UniformNamePrefix + slot;
return $"{GetShaderStagePrefix(stage)}_{DefaultNames.UniformNamePrefix}{slot}_{DefaultNames.UniformNameSuffix}";
}
return ubName + "_" + DefaultNames.UniformNameSuffix;
private static string GetUbName(ShaderStage stage, string slotExpr)
{
return $"{GetShaderStagePrefix(stage)}_{DefaultNames.UniformNamePrefix}[{slotExpr}].{DefaultNames.DataName}";
}
public static string GetSamplerName(ShaderStage stage, AstTextureOperation texOp, string indexExpr)

10
Ryujinx.Graphics.Shader/Decoders/CbIndexMode.cs Normal file
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@ -0,0 +1,10 @@
namespace Ryujinx.Graphics.Shader.Decoders
{
enum CbIndexMode
{
Default = 0,
Il = 1,
Is = 2,
Isl = 3
}
}

4
Ryujinx.Graphics.Shader/Decoders/OpCodeLdc.cs
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@ -10,6 +10,7 @@ namespace Ryujinx.Graphics.Shader.Decoders
public int Offset { get; }
public int Slot { get; }
public CbIndexMode IndexMode { get; }
public IntegerSize Size { get; }
public OpCodeLdc(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
@ -20,7 +21,8 @@ namespace Ryujinx.Graphics.Shader.Decoders
Offset = (opCode.Extract(20, 16) << 16) >> 16;
Slot = opCode.Extract(36, 5);
Size = (IntegerSize)opCode.Extract(48, 3);
IndexMode = (CbIndexMode)opCode.Extract(44, 2);
Size = (IntegerSize)opCode.Extract(48, 3);
}
}
}

5
Ryujinx.Graphics.Shader/IGpuAccessor.cs
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@ -39,6 +39,11 @@
return 0xc000;
}
public uint QueryConstantBufferUse()
{
return 0xffff;
}
public bool QueryIsTextureBuffer(int handle)
{
return false;

16
Ryujinx.Graphics.Shader/Instructions/InstEmitMemory.cs
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@ -112,7 +112,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
res = context.FPMultiply(res, Attribute(AttributeConsts.PositionW));
}
}
if (op.Mode == InterpolationMode.Default)
{
Operand srcB = GetSrcB(context);
@ -152,7 +152,17 @@ namespace Ryujinx.Graphics.Shader.Instructions
int count = op.Size == IntegerSize.B64 ? 2 : 1;
Operand addr = context.IAdd(GetSrcA(context), Const(op.Offset));
Operand slot = Const(op.Slot);
Operand srcA = GetSrcA(context);
if (op.IndexMode == CbIndexMode.Is ||
op.IndexMode == CbIndexMode.Isl)
{
slot = context.IAdd(slot, context.BitfieldExtractU32(srcA, Const(16), Const(16)));
srcA = context.BitwiseAnd(srcA, Const(0xffff));
}
Operand addr = context.IAdd(srcA, Const(op.Offset));
Operand wordOffset = context.ShiftRightU32(addr, Const(2));
@ -169,7 +179,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
Operand offset = context.IAdd(wordOffset, Const(index));
Operand value = context.LoadConstant(Const(op.Slot), offset);
Operand value = context.LoadConstant(slot, offset);
if (isSmallInt)
{

19
Ryujinx.Graphics.Shader/StructuredIr/StructuredProgram.cs
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@ -2,6 +2,7 @@ using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.Translation;
using System;
using System.Collections.Generic;
using System.Numerics;
namespace Ryujinx.Graphics.Shader.StructuredIr
{
@ -73,12 +74,24 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
{
Operand slot = operation.GetSource(0);
if (slot.Type != OperandType.Constant)
if (slot.Type == OperandType.Constant)
{
throw new InvalidOperationException("Found load with non-constant constant buffer slot.");
context.Info.CBuffers.Add(slot.Value);
}
else
{
// If the value is not constant, then we don't know
// how many constant buffers are used, so we assume
// all of them are used.
int cbCount = 32 - BitOperations.LeadingZeroCount(context.Config.GpuAccessor.QueryConstantBufferUse());
context.Info.CBuffers.Add(slot.Value);
for (int index = 0; index < cbCount; index++)
{
context.Info.CBuffers.Add(index);
}
context.Info.UsesCbIndexing = true;
}
}
else if (UsesStorage(inst))
{

1
Ryujinx.Graphics.Shader/StructuredIr/StructuredProgramInfo.cs
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@ -15,6 +15,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
public HashSet<int> OAttributes { get; }
public bool UsesInstanceId { get; set; }
public bool UsesCbIndexing { get; set; }
public HelperFunctionsMask HelperFunctionsMask { get; set; }