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Simplify logic for bindless texture handling (#1667)

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* Simplify logic for bindless texture handling

* Nits
This commit is contained in:
gdkchan 2020-11-09 19:35:04 -03:00 committed by GitHub
parent eda6b78894
commit 934a78005e
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GPG key ID: 4AEE18F83AFDEB23
16 changed files with 131 additions and 191 deletions
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17
Ryujinx.Graphics.Gpu/Engine/Compute.cs
View file

@ -111,20 +111,13 @@ namespace Ryujinx.Graphics.Gpu.Engine
Target target = ShaderTexture.GetTarget(descriptor.Type);
if (descriptor.IsBindless)
{
textureBindings[index] = new TextureBindingInfo(
target,
descriptor.Binding,
descriptor.CbufOffset,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
}
else
{
textureBindings[index] = new TextureBindingInfo(target, descriptor.Binding, descriptor.HandleIndex, descriptor.Flags);
}
}
TextureManager.SetComputeTextures(textureBindings);
@ -137,7 +130,13 @@ namespace Ryujinx.Graphics.Gpu.Engine
Target target = ShaderTexture.GetTarget(descriptor.Type);
Format format = ShaderTexture.GetFormat(descriptor.Format);
imageBindings[index] = new TextureBindingInfo(target, format, descriptor.Binding, descriptor.HandleIndex, descriptor.Flags);
imageBindings[index] = new TextureBindingInfo(
target,
format,
descriptor.Binding,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
}
TextureManager.SetComputeImages(imageBindings);

22
Ryujinx.Graphics.Gpu/Engine/Methods.cs
View file

@ -1024,14 +1024,12 @@ namespace Ryujinx.Graphics.Gpu.Engine
Target target = ShaderTexture.GetTarget(descriptor.Type);
if (descriptor.IsBindless)
{
textureBindings[index] = new TextureBindingInfo(target, descriptor.Binding, descriptor.CbufSlot, descriptor.CbufOffset, descriptor.Flags);
}
else
{
textureBindings[index] = new TextureBindingInfo(target, descriptor.Binding, descriptor.HandleIndex, descriptor.Flags);
}
textureBindings[index] = new TextureBindingInfo(
target,
descriptor.Binding,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
}
TextureManager.SetGraphicsTextures(stage, textureBindings);
@ -1045,7 +1043,13 @@ namespace Ryujinx.Graphics.Gpu.Engine
Target target = ShaderTexture.GetTarget(descriptor.Type);
Format format = ShaderTexture.GetFormat(descriptor.Format);
imageBindings[index] = new TextureBindingInfo(target, format, descriptor.Binding, descriptor.HandleIndex, descriptor.Flags);
imageBindings[index] = new TextureBindingInfo(
target,
format,
descriptor.Binding,
descriptor.CbufSlot,
descriptor.HandleIndex,
descriptor.Flags);
}
TextureManager.SetGraphicsImages(stage, imageBindings);

56
Ryujinx.Graphics.Gpu/Image/TextureBindingInfo.cs
View file

@ -25,28 +25,14 @@ namespace Ryujinx.Graphics.Gpu.Image
public int Binding { get; }
/// <summary>
/// Shader texture handle.
/// This is an index into the texture constant buffer.
/// </summary>
public int Handle { get; }
/// <summary>
/// Indicates if the texture is a bindless texture.
/// </summary>
/// <remarks>
/// For those textures, Handle is ignored.
/// </remarks>
public bool IsBindless { get; }
/// <summary>
/// Constant buffer slot with the bindless texture handle, for bindless texture.
/// Constant buffer slot with the texture handle.
/// </summary>
public int CbufSlot { get; }
/// <summary>
/// Constant buffer offset of the bindless texture handle, for bindless texture.
/// Index of the texture handle on the constant buffer at slot <see cref="CbufSlot"/>.
/// </summary>
public int CbufOffset { get; }
public int Handle { get; }
/// <summary>
/// Flags from the texture descriptor that indicate how the texture is used.
@ -59,20 +45,16 @@ namespace Ryujinx.Graphics.Gpu.Image
/// <param name="target">The shader sampler target type</param>
/// <param name="format">Format of the image as declared on the shader</param>
/// <param name="binding">The shader texture binding point</param>
/// <param name="cbufSlot">Constant buffer slot where the texture handle is located</param>
/// <param name="handle">The shader texture handle (read index into the texture constant buffer)</param>
/// <param name="flags">The texture's usage flags, indicating how it is used in the shader</param>
public TextureBindingInfo(Target target, Format format, int binding, int handle, TextureUsageFlags flags)
public TextureBindingInfo(Target target, Format format, int binding, int cbufSlot, int handle, TextureUsageFlags flags)
{
Target = target;
Format = format;
Binding = binding;
CbufSlot = cbufSlot;
Handle = handle;
IsBindless = false;
CbufSlot = 0;
CbufOffset = 0;
Flags = flags;
}
@ -81,33 +63,11 @@ namespace Ryujinx.Graphics.Gpu.Image
/// </summary>
/// <param name="target">The shader sampler target type</param>
/// <param name="binding">The shader texture binding point</param>
/// <param name="cbufSlot">Constant buffer slot where the texture handle is located</param>
/// <param name="handle">The shader texture handle (read index into the texture constant buffer)</param>
/// <param name="flags">The texture's usage flags, indicating how it is used in the shader</param>
public TextureBindingInfo(Target target, int binding, int handle, TextureUsageFlags flags) : this(target, (Format)0, binding, handle, flags)
public TextureBindingInfo(Target target, int binding, int cbufSlot, int handle, TextureUsageFlags flags) : this(target, (Format)0, binding, cbufSlot, handle, flags)
{
}
/// <summary>
/// Constructs the bindless texture binding information structure.
/// </summary>
/// <param name="target">The shader sampler target type</param>
/// <param name="binding">The shader texture binding point</param>
/// <param name="cbufSlot">Constant buffer slot where the bindless texture handle is located</param>
/// <param name="cbufOffset">Constant buffer offset of the bindless texture handle</param>
/// <param name="flags">The texture's usage flags, indicating how it is used in the shader</param>
public TextureBindingInfo(Target target, int binding, int cbufSlot, int cbufOffset, TextureUsageFlags flags)
{
Target = target;
Format = 0;
Binding = binding;
Handle = 0;
IsBindless = true;
CbufSlot = cbufSlot;
CbufOffset = cbufOffset;
Flags = flags;
}
}
}

29
Ryujinx.Graphics.Gpu/Image/TextureBindingsManager.cs
View file

@ -267,30 +267,9 @@ namespace Ryujinx.Graphics.Gpu.Image
{
TextureBindingInfo bindingInfo = _textureBindings[stageIndex][index];
int packedId;
if (bindingInfo.IsBindless)
{
ulong address;
var bufferManager = _context.Methods.BufferManager;
if (_isCompute)
{
address = bufferManager.GetComputeUniformBufferAddress(bindingInfo.CbufSlot);
}
else
{
address = bufferManager.GetGraphicsUniformBufferAddress(stageIndex, bindingInfo.CbufSlot);
}
packedId = _context.PhysicalMemory.Read<int>(address + (ulong)bindingInfo.CbufOffset * 4);
}
else
{
packedId = ReadPackedId(stageIndex, bindingInfo.Handle, _textureBufferIndex);
}
int textureBufferIndex = bindingInfo.CbufSlot < 0 ? _textureBufferIndex : bindingInfo.CbufSlot;
int packedId = ReadPackedId(stageIndex, bindingInfo.Handle, textureBufferIndex);
int textureId = UnpackTextureId(packedId);
int samplerId;
@ -361,7 +340,9 @@ namespace Ryujinx.Graphics.Gpu.Image
{
TextureBindingInfo bindingInfo = _imageBindings[stageIndex][index];
int packedId = ReadPackedId(stageIndex, bindingInfo.Handle, _textureBufferIndex);
int textureBufferIndex = bindingInfo.CbufSlot < 0 ? _textureBufferIndex : bindingInfo.CbufSlot;
int packedId = ReadPackedId(stageIndex, bindingInfo.Handle, textureBufferIndex);
int textureId = UnpackTextureId(packedId);
Texture texture = pool.Get(textureId);

11
Ryujinx.Graphics.Shader/CodeGen/Glsl/CodeGenContext.cs
View file

@ -86,18 +86,11 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
private int FindDescriptorIndex(List<TextureDescriptor> list, AstTextureOperation texOp)
{
AstOperand operand = texOp.GetSource(0) as AstOperand;
bool bindless = (texOp.Flags & TextureFlags.Bindless) > 0;
int cBufSlot = bindless ? operand.CbufSlot : 0;
int cBufOffset = bindless ? operand.CbufOffset : 0;
return list.FindIndex(descriptor =>
descriptor.Type == texOp.Type &&
descriptor.CbufSlot == texOp.CbufSlot &&
descriptor.HandleIndex == texOp.Handle &&
descriptor.Format == texOp.Format &&
descriptor.CbufSlot == cBufSlot &&
descriptor.CbufOffset == cBufOffset);
descriptor.Format == texOp.Format);
}
public int FindTextureDescriptorIndex(AstTextureOperation texOp)

24
Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
View file

@ -305,24 +305,14 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
string samplerName = OperandManager.GetSamplerName(context.Config.Stage, texOp, indexExpr);
if (!samplers.Add(samplerName))
if ((texOp.Flags & TextureFlags.Bindless) != 0 || !samplers.Add(samplerName))
{
continue;
}
int firstBinding = -1;
if ((texOp.Flags & TextureFlags.Bindless) != 0)
{
AstOperand operand = texOp.GetSource(0) as AstOperand;
firstBinding = context.Config.Counts.IncrementTexturesCount();
var desc = new TextureDescriptor(firstBinding, texOp.Type, operand.CbufSlot, operand.CbufOffset);
context.TextureDescriptors.Add(desc);
}
else if ((texOp.Type & SamplerType.Indexed) != 0)
if ((texOp.Type & SamplerType.Indexed) != 0)
{
for (int index = 0; index < texOp.ArraySize; index++)
{
@ -333,7 +323,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
firstBinding = binding;
}
var desc = new TextureDescriptor(binding, texOp.Type, texOp.Format, texOp.Handle + index * 2);
var desc = new TextureDescriptor(binding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle + index * 2);
context.TextureDescriptors.Add(desc);
}
@ -342,7 +332,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
firstBinding = context.Config.Counts.IncrementTexturesCount();
var desc = new TextureDescriptor(firstBinding, texOp.Type, texOp.Format, texOp.Handle);
var desc = new TextureDescriptor(firstBinding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle);
context.TextureDescriptors.Add(desc);
}
@ -363,7 +353,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
string imageName = OperandManager.GetImageName(context.Config.Stage, texOp, indexExpr);
if (!images.Add(imageName))
if ((texOp.Flags & TextureFlags.Bindless) != 0 || !images.Add(imageName))
{
continue;
}
@ -381,7 +371,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
firstBinding = binding;
}
var desc = new TextureDescriptor(binding, texOp.Type, texOp.Format, texOp.Handle + index * 2);
var desc = new TextureDescriptor(binding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle + index * 2);
context.ImageDescriptors.Add(desc);
}
@ -390,7 +380,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
firstBinding = context.Config.Counts.IncrementImagesCount();
var desc = new TextureDescriptor(firstBinding, texOp.Type, texOp.Format, texOp.Handle);
var desc = new TextureDescriptor(firstBinding, texOp.Type, texOp.Format, texOp.CbufSlot, texOp.Handle);
context.ImageDescriptors.Add(desc);
}

30
Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenMemory.cs
View file

@ -15,6 +15,12 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;
// TODO: Bindless texture support. For now we just return 0/do nothing.
if (isBindless)
{
return texOp.Inst == Instruction.ImageLoad ? NumberFormatter.FormatFloat(0) : "// imageStore(bindless)";
}
bool isArray = (texOp.Type & SamplerType.Array) != 0;
bool isIndexed = (texOp.Type & SamplerType.Indexed) != 0;
@ -79,7 +85,10 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
flags |= TextureUsageFlags.ResScaleUnsupported;
}
if (!isBindless)
{
context.ImageDescriptors[index] = context.ImageDescriptors[index].SetFlag(flags);
}
return vector;
}
@ -212,6 +221,12 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;
// TODO: Bindless texture support. For now we just return 0.
if (isBindless)
{
return NumberFormatter.FormatFloat(0);
}
bool isIndexed = (texOp.Type & SamplerType.Indexed) != 0;
string indexExpr = null;
@ -306,6 +321,12 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
bool isMultisample = (texOp.Type & SamplerType.Multisample) != 0;
bool isShadow = (texOp.Type & SamplerType.Shadow) != 0;
// TODO: Bindless texture support. For now we just return 0.
if (isBindless)
{
return NumberFormatter.FormatFloat(0);
}
// This combination is valid, but not available on GLSL.
// For now, ignore the LOD level and do a normal sample.
// TODO: How to implement it properly?
@ -469,8 +490,11 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
flags |= TextureUsageFlags.ResScaleUnsupported;
}
if (!isBindless)
{
context.TextureDescriptors[index] = context.TextureDescriptors[index].SetFlag(flags);
}
}
return vector;
}
@ -572,6 +596,12 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;
// TODO: Bindless texture support. For now we just return 0.
if (isBindless)
{
return NumberFormatter.FormatInt(0);
}
bool isIndexed = (texOp.Type & SamplerType.Indexed) != 0;
string indexExpr = null;

15
Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs
View file

@ -241,30 +241,19 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
public static string GetSamplerName(ShaderStage stage, AstTextureOperation texOp, string indexExpr)
{
string suffix;
if ((texOp.Flags & TextureFlags.Bindless) != 0)
{
AstOperand operand = texOp.GetSource(0) as AstOperand;
suffix = $"_{texOp.Type.ToGlslSamplerType()}_cb{operand.CbufSlot}_{operand.CbufOffset}";
}
else
{
suffix = texOp.Handle.ToString("X");
string suffix = texOp.CbufSlot < 0 ? $"_tcb_{texOp.Handle:X}" : $"_cb{texOp.CbufSlot}_{texOp.Handle:X}";
if ((texOp.Type & SamplerType.Indexed) != 0)
{
suffix += $"a[{indexExpr}]";
}
}
return GetShaderStagePrefix(stage) + "_" + DefaultNames.SamplerNamePrefix + suffix;
}
public static string GetImageName(ShaderStage stage, AstTextureOperation texOp, string indexExpr)
{
string suffix = texOp.Handle.ToString("X") + "_" + texOp.Format.ToGlslFormat();
string suffix = texOp.CbufSlot < 0 ? $"_tcb_{texOp.Handle:X}_{texOp.Format.ToGlslFormat()}" : $"_cb{texOp.CbufSlot}_{texOp.Handle:X}_{texOp.Format.ToGlslFormat()}";
if ((texOp.Type & SamplerType.Indexed) != 0)
{

8
Ryujinx.Graphics.Shader/IntermediateRepresentation/TextureOperation.cs
View file

@ -2,9 +2,13 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
{
class TextureOperation : Operation
{
private const int DefaultCbufSlot = -1;
public SamplerType Type { get; private set; }
public TextureFlags Flags { get; private set; }
public int CbufSlot { get; private set; }
public int Handle { get; private set; }
public TextureFormat Format { get; set; }
@ -20,6 +24,7 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
{
Type = type;
Flags = flags;
CbufSlot = DefaultCbufSlot;
Handle = handle;
}
@ -30,7 +35,7 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
Handle = handle;
}
public void SetHandle(int handle)
public void SetHandle(int handle, int cbufSlot = DefaultCbufSlot)
{
if ((Flags & TextureFlags.Bindless) != 0)
{
@ -39,6 +44,7 @@ namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
RemoveSource(0);
}
CbufSlot = cbufSlot;
Handle = handle;
}
}

3
Ryujinx.Graphics.Shader/StructuredIr/AstTextureOperation.cs
View file

@ -8,6 +8,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
public TextureFormat Format { get; }
public TextureFlags Flags { get; }
public int CbufSlot { get; }
public int Handle { get; }
public int ArraySize { get; }
@ -16,6 +17,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
SamplerType type,
TextureFormat format,
TextureFlags flags,
int cbufSlot,
int handle,
int arraySize,
int index,
@ -24,6 +26,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
Type = type;
Format = format;
Flags = flags;
CbufSlot = cbufSlot;
Handle = handle;
ArraySize = arraySize;
}

1
Ryujinx.Graphics.Shader/StructuredIr/StructuredProgram.cs
View file

@ -117,6 +117,7 @@ namespace Ryujinx.Graphics.Shader.StructuredIr
texOp.Type,
texOp.Format,
texOp.Flags,
texOp.CbufSlot,
texOp.Handle,
4, // TODO: Non-hardcoded array size.
texOp.Index,

31
Ryujinx.Graphics.Shader/TextureDescriptor.cs
View file

@ -5,45 +5,20 @@ namespace Ryujinx.Graphics.Shader
public int Binding { get; }
public SamplerType Type { get; }
public TextureFormat Format { get; }
public int HandleIndex { get; }
public bool IsBindless { get; }
public int CbufSlot { get; }
public int CbufOffset { get; }
public int HandleIndex { get; }
public TextureUsageFlags Flags { get; set; }
public TextureDescriptor(int binding, SamplerType type, TextureFormat format, int handleIndex)
public TextureDescriptor(int binding, SamplerType type, TextureFormat format, int cbufSlot, int handleIndex)
{
Binding = binding;
Type = type;
Format = format;
HandleIndex = handleIndex;
IsBindless = false;
CbufSlot = 0;
CbufOffset = 0;
Flags = TextureUsageFlags.None;
}
public TextureDescriptor(int binding, SamplerType type, int cbufSlot, int cbufOffset)
{
Binding = binding;
Type = type;
Format = TextureFormat.Unknown;
HandleIndex = 0;
IsBindless = true;
CbufSlot = cbufSlot;
CbufOffset = cbufOffset;
HandleIndex = handleIndex;
Flags = TextureUsageFlags.None;
}

29
Ryujinx.Graphics.Shader/Translation/Optimizations/BindlessElimination.cs
View file

@ -5,15 +5,14 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
{
class BindlessElimination
{
private const int NvnTextureBufferSlot = 2;
public static void RunPass(BasicBlock block, ShaderConfig config)
{
// We can turn a bindless into regular access by recognizing the pattern
// produced by the compiler for separate texture and sampler.
// We check for the following conditions:
// - The handle is a constant buffer value.
// - The handle is the result of a bitwise OR logical operation.
// - Both sources of the OR operation comes from CB2 (used by NVN to hold texture handles).
// - Both sources of the OR operation comes from a constant buffer.
for (LinkedListNode<INode> node = block.Operations.First; node != null; node = node.Next)
{
if (!(node.Value is TextureOperation texOp))
@ -26,9 +25,19 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
continue;
}
if (texOp.Inst == Instruction.TextureSample)
if (texOp.Inst == Instruction.Lod ||
texOp.Inst == Instruction.TextureSample ||
texOp.Inst == Instruction.TextureSize)
{
if (!(texOp.GetSource(0).AsgOp is Operation handleCombineOp))
Operand bindlessHandle = texOp.GetSource(0);
if (bindlessHandle.Type == OperandType.ConstantBuffer)
{
texOp.SetHandle(bindlessHandle.GetCbufOffset(), bindlessHandle.GetCbufSlot());
continue;
}
if (!(bindlessHandle.AsgOp is Operation handleCombineOp))
{
continue;
}
@ -41,21 +50,21 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
Operand src0 = handleCombineOp.GetSource(0);
Operand src1 = handleCombineOp.GetSource(1);
if (src0.Type != OperandType.ConstantBuffer || src0.GetCbufSlot() != NvnTextureBufferSlot ||
src1.Type != OperandType.ConstantBuffer || src1.GetCbufSlot() != NvnTextureBufferSlot)
if (src0.Type != OperandType.ConstantBuffer ||
src1.Type != OperandType.ConstantBuffer || src0.GetCbufSlot() != src1.GetCbufSlot())
{
continue;
}
texOp.SetHandle(src0.GetCbufOffset() | (src1.GetCbufOffset() << 16));
texOp.SetHandle(src0.GetCbufOffset() | (src1.GetCbufOffset() << 16), src0.GetCbufSlot());
}
else if (texOp.Inst == Instruction.ImageLoad || texOp.Inst == Instruction.ImageStore)
{
Operand src0 = texOp.GetSource(0);
if (src0.Type == OperandType.ConstantBuffer && src0.GetCbufSlot() == NvnTextureBufferSlot)
if (src0.Type == OperandType.ConstantBuffer)
{
texOp.SetHandle(src0.GetCbufOffset());
texOp.SetHandle(src0.GetCbufOffset(), src0.GetCbufSlot());
texOp.Format = config.GetTextureFormat(texOp.Handle);
}
}

2
Ryujinx.Graphics.Shader/Translation/Lowering.cs → Ryujinx.Graphics.Shader/Translation/Rewriter.cs
View file

@ -8,7 +8,7 @@ using static Ryujinx.Graphics.Shader.Translation.GlobalMemory;
namespace Ryujinx.Graphics.Shader.Translation
{
static class Lowering
static class Rewriter
{
public static void RunPass(BasicBlock[] blocks, ShaderConfig config)
{

2
Ryujinx.Graphics.Shader/Translation/Translator.cs
View file

@ -96,7 +96,7 @@ namespace Ryujinx.Graphics.Shader.Translation
Optimizer.RunPass(cfg.Blocks, config);
Lowering.RunPass(cfg.Blocks, config);
Rewriter.RunPass(cfg.Blocks, config);
}
funcs[i] = new Function(cfg.Blocks, $"fun{i}", false, inArgumentsCount, outArgumentsCount);