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using Ryujinx.Common;
using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Gpu.Image;
using Ryujinx.Graphics.Gpu.Shader;
using Ryujinx.Graphics.Shader;
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Gpu.Memory
{
/// <summary>
/// Buffer manager.
/// </summary>
class BufferManager
{
private const int TfInfoVertexCountOffset = Constants.TotalTransformFeedbackBuffers * sizeof(int);
private const int TfInfoBufferSize = TfInfoVertexCountOffset + sizeof(int);
private readonly GpuContext _context;
private readonly GpuChannel _channel;
private int _unalignedStorageBuffers;
public bool HasUnalignedStorageBuffers => _unalignedStorageBuffers > 0;
public bool HasTransformFeedbackOutputs { get; set; }
private IndexBuffer _indexBuffer;
private readonly VertexBuffer[] _vertexBuffers;
private readonly BufferBounds[] _transformFeedbackBuffers;
private readonly List<BufferTextureBinding> _bufferTextures;
private readonly BufferAssignment[] _ranges;
/// <summary>
/// Holds shader stage buffer state and binding information.
/// </summary>
private class BuffersPerStage
{
/// <summary>
/// Shader buffer binding information.
/// </summary>
public BufferDescriptor[] Bindings { get; private set; }
/// <summary>
/// Buffer regions.
/// </summary>
public BufferBounds[] Buffers { get; }
/// <summary>
/// Flag indicating if this binding is unaligned.
/// </summary>
public bool[] Unaligned { get; }
/// <summary>
/// Total amount of buffers used on the shader.
/// </summary>
public int Count { get; private set; }
/// <summary>
/// Creates a new instance of the shader stage buffer information.
/// </summary>
/// <param name="count">Maximum amount of buffers that the shader stage can use</param>
public BuffersPerStage(int count)
{
Bindings = new BufferDescriptor[count];
Buffers = new BufferBounds[count];
Unaligned = new bool[count];
}
/// <summary>
/// Sets the region of a buffer at a given slot.
/// </summary>
/// <param name="index">Buffer slot</param>
/// <param name="address">Region virtual address</param>
/// <param name="size">Region size in bytes</param>
/// <param name="flags">Buffer usage flags</param>
public void SetBounds(int index, ulong address, ulong size, BufferUsageFlags flags = BufferUsageFlags.None)
{
Buffers[index] = new BufferBounds(address, size, flags);
}
/// <summary>
/// Sets shader buffer binding information.
/// </summary>
/// <param name="descriptors">Buffer binding information</param>
public void SetBindings(BufferDescriptor[] descriptors)
{
if (descriptors == null)
{
Count = 0;
return;
}
if ((Count = descriptors.Length) != 0)
{
Bindings = descriptors;
}
}
}
private readonly BuffersPerStage _cpStorageBuffers;
private readonly BuffersPerStage _cpUniformBuffers;
private readonly BuffersPerStage[] _gpStorageBuffers;
private readonly BuffersPerStage[] _gpUniformBuffers;
private BufferHandle _tfInfoBuffer;
private readonly int[] _tfInfoData;
private bool _gpStorageBuffersDirty;
private bool _gpUniformBuffersDirty;
private bool _indexBufferDirty;
private bool _vertexBuffersDirty;
private uint _vertexBuffersEnableMask;
private bool _transformFeedbackBuffersDirty;
private bool _rebind;
/// <summary>
/// Creates a new instance of the buffer manager.
/// </summary>
/// <param name="context">GPU context that the buffer manager belongs to</param>
/// <param name="channel">GPU channel that the buffer manager belongs to</param>
public BufferManager(GpuContext context, GpuChannel channel)
{
_context = context;
_channel = channel;
_vertexBuffers = new VertexBuffer[Constants.TotalVertexBuffers];
_transformFeedbackBuffers = new BufferBounds[Constants.TotalTransformFeedbackBuffers];
_cpStorageBuffers = new BuffersPerStage(Constants.TotalCpStorageBuffers);
_cpUniformBuffers = new BuffersPerStage(Constants.TotalCpUniformBuffers);
_gpStorageBuffers = new BuffersPerStage[Constants.ShaderStages];
_gpUniformBuffers = new BuffersPerStage[Constants.ShaderStages];
for (int index = 0; index < Constants.ShaderStages; index++)
{
_gpStorageBuffers[index] = new BuffersPerStage(Constants.TotalGpStorageBuffers);
_gpUniformBuffers[index] = new BuffersPerStage(Constants.TotalGpUniformBuffers);
}
_bufferTextures = new List<BufferTextureBinding>();
_ranges = new BufferAssignment[Constants.TotalGpUniformBuffers * Constants.ShaderStages];
if (!context.Capabilities.SupportsTransformFeedback)
{
_tfInfoData = new int[Constants.TotalTransformFeedbackBuffers];
}
}
/// <summary>
/// Sets the memory range with the index buffer data, to be used for subsequent draw calls.
/// </summary>
/// <param name="gpuVa">Start GPU virtual address of the index buffer</param>
/// <param name="size">Size, in bytes, of the index buffer</param>
/// <param name="type">Type of each index buffer element</param>
public void SetIndexBuffer(ulong gpuVa, ulong size, IndexType type)
{
ulong address = _channel.MemoryManager.Physical.BufferCache.TranslateAndCreateBuffer(_channel.MemoryManager, gpuVa, size);
_indexBuffer.Address = address;
_indexBuffer.Size = size;
_indexBuffer.Type = type;
_indexBufferDirty = true;
}
/// <summary>
/// Sets a new index buffer that overrides the one set on the call to <see cref="CommitGraphicsBindings"/>.
/// </summary>
/// <param name="buffer">Buffer to be used as index buffer</param>
/// <param name="type">Type of each index buffer element</param>
public void SetIndexBuffer(BufferRange buffer, IndexType type)
{
_context.Renderer.Pipeline.SetIndexBuffer(buffer, type);
_indexBufferDirty = true;
}
/// <summary>
/// Sets the memory range with vertex buffer data, to be used for subsequent draw calls.
/// </summary>
/// <param name="index">Index of the vertex buffer (up to 16)</param>
/// <param name="gpuVa">GPU virtual address of the buffer</param>
/// <param name="size">Size in bytes of the buffer</param>
/// <param name="stride">Stride of the buffer, defined as the number of bytes of each vertex</param>
/// <param name="divisor">Vertex divisor of the buffer, for instanced draws</param>
public void SetVertexBuffer(int index, ulong gpuVa, ulong size, int stride, int divisor)
{
ulong address = _channel.MemoryManager.Physical.BufferCache.TranslateAndCreateBuffer(_channel.MemoryManager, gpuVa, size);
_vertexBuffers[index].Address = address;
_vertexBuffers[index].Size = size;
_vertexBuffers[index].Stride = stride;
_vertexBuffers[index].Divisor = divisor;
_vertexBuffersDirty = true;
if (address != 0)
{
_vertexBuffersEnableMask |= 1u << index;
}
else
{
_vertexBuffersEnableMask &= ~(1u << index);
}
}
/// <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 = _channel.MemoryManager.Physical.BufferCache.TranslateAndCreateBuffer(_channel.MemoryManager, gpuVa, size);
_transformFeedbackBuffers[index] = new BufferBounds(address, size);
_transformFeedbackBuffersDirty = true;
}
/// <summary>
/// Records the alignment of a storage buffer.
/// Unaligned storage buffers disable some optimizations on the shader.
/// </summary>
/// <param name="buffers">The binding list to modify</param>
/// <param name="index">Index of the storage buffer</param>
/// <param name="gpuVa">Start GPU virtual address of the buffer</param>
private void RecordStorageAlignment(BuffersPerStage buffers, int index, ulong gpuVa)
{
bool unaligned = (gpuVa & ((ulong)_context.Capabilities.StorageBufferOffsetAlignment - 1)) != 0;
if (unaligned || HasUnalignedStorageBuffers)
{
// Check if the alignment changed for this binding.
ref bool currentUnaligned = ref buffers.Unaligned[index];
if (currentUnaligned != unaligned)
{
currentUnaligned = unaligned;
_unalignedStorageBuffers += unaligned ? 1 : -1;
}
}
}
/// <summary>
/// Sets a storage buffer on the compute pipeline.
/// Storage buffers can be read and written to on shaders.
/// </summary>
/// <param name="index">Index of the storage buffer</param>
/// <param name="gpuVa">Start GPU virtual address of the buffer</param>
/// <param name="size">Size in bytes of the storage buffer</param>
/// <param name="flags">Buffer usage flags</param>
public void SetComputeStorageBuffer(int index, ulong gpuVa, ulong size, BufferUsageFlags flags)
{
size += gpuVa & ((ulong)_context.Capabilities.StorageBufferOffsetAlignment - 1);
RecordStorageAlignment(_cpStorageBuffers, index, gpuVa);
gpuVa = BitUtils.AlignDown<ulong>(gpuVa, (ulong)_context.Capabilities.StorageBufferOffsetAlignment);
ulong address = _channel.MemoryManager.Physical.BufferCache.TranslateAndCreateBuffer(_channel.MemoryManager, gpuVa, size);
_cpStorageBuffers.SetBounds(index, address, size, flags);
}
/// <summary>
/// Sets a storage buffer on the graphics pipeline.
/// Storage buffers can be read and written to on shaders.
/// </summary>
/// <param name="stage">Index of the shader stage</param>
/// <param name="index">Index of the storage buffer</param>
/// <param name="gpuVa">Start GPU virtual address of the buffer</param>
/// <param name="size">Size in bytes of the storage buffer</param>
/// <param name="flags">Buffer usage flags</param>
public void SetGraphicsStorageBuffer(int stage, int index, ulong gpuVa, ulong size, BufferUsageFlags flags)
{
size += gpuVa & ((ulong)_context.Capabilities.StorageBufferOffsetAlignment - 1);
BuffersPerStage buffers = _gpStorageBuffers[stage];
RecordStorageAlignment(buffers, index, gpuVa);
gpuVa = BitUtils.AlignDown<ulong>(gpuVa, (ulong)_context.Capabilities.StorageBufferOffsetAlignment);
ulong address = _channel.MemoryManager.Physical.BufferCache.TranslateAndCreateBuffer(_channel.MemoryManager, gpuVa, size);
if (buffers.Buffers[index].Address != address ||
buffers.Buffers[index].Size != size)
{
_gpStorageBuffersDirty = true;
}
buffers.SetBounds(index, address, size, flags);
}
/// <summary>
/// Sets a uniform buffer on the compute pipeline.
/// Uniform buffers are read-only from shaders, and have a small capacity.
/// </summary>
/// <param name="index">Index of the uniform buffer</param>
/// <param name="gpuVa">Start GPU virtual address of the buffer</param>
/// <param name="size">Size in bytes of the storage buffer</param>
public void SetComputeUniformBuffer(int index, ulong gpuVa, ulong size)
{
ulong address = _channel.MemoryManager.Physical.BufferCache.TranslateAndCreateBuffer(_channel.MemoryManager, gpuVa, size);
_cpUniformBuffers.SetBounds(index, address, size);
}
/// <summary>
/// Sets a uniform buffer on the graphics pipeline.
/// Uniform buffers are read-only from shaders, and have a small capacity.
/// </summary>
/// <param name="stage">Index of the shader stage</param>
/// <param name="index">Index of the uniform buffer</param>
/// <param name="gpuVa">Start GPU virtual address of the buffer</param>
/// <param name="size">Size in bytes of the storage buffer</param>
public void SetGraphicsUniformBuffer(int stage, int index, ulong gpuVa, ulong size)
{
ulong address = _channel.MemoryManager.Physical.BufferCache.TranslateAndCreateBuffer(_channel.MemoryManager, gpuVa, size);
_gpUniformBuffers[stage].SetBounds(index, address, size);
_gpUniformBuffersDirty = true;
}
/// <summary>
/// Sets the number of vertices per instance on a instanced draw. Used for transform feedback emulation.
/// </summary>
/// <param name="vertexCount">Vertex count per instance</param>
public void SetInstancedDrawVertexCount(int vertexCount)
{
if (!_context.Capabilities.SupportsTransformFeedback &&
HasTransformFeedbackOutputs &&
_tfInfoBuffer != BufferHandle.Null)
{
Span<byte> data = stackalloc byte[sizeof(int)];
MemoryMarshal.Cast<byte, int>(data)[0] = vertexCount;
_context.Renderer.SetBufferData(_tfInfoBuffer, TfInfoVertexCountOffset, data);
}
}
/// <summary>
/// Forces transform feedback and storage buffers to be updated on the next draw.
/// </summary>
public void ForceTransformFeedbackAndStorageBuffersDirty()
{
_transformFeedbackBuffersDirty = true;
_gpStorageBuffersDirty = true;
}
/// <summary>
/// Sets the binding points for the storage buffers bound on the compute pipeline.
/// </summary>
/// <param name="bindings">Bindings for the active shader</param>
public void SetComputeBufferBindings(CachedShaderBindings bindings)
{
_cpStorageBuffers.SetBindings(bindings.StorageBufferBindings[0]);
_cpUniformBuffers.SetBindings(bindings.ConstantBufferBindings[0]);
}
/// <summary>
/// Sets the binding points for the storage buffers bound on the graphics pipeline.
/// </summary>
/// <param name="bindings">Bindings for the active shader</param>
public void SetGraphicsBufferBindings(CachedShaderBindings bindings)
{
for (int i = 0; i < Constants.ShaderStages; i++)
{
_gpStorageBuffers[i].SetBindings(bindings.StorageBufferBindings[i]);
_gpUniformBuffers[i].SetBindings(bindings.ConstantBufferBindings[i]);
}
_gpStorageBuffersDirty = true;
_gpUniformBuffersDirty = true;
}
/// <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>
/// 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>
/// Gets the address of the compute uniform buffer currently bound at the given index.
/// </summary>
/// <param name="index">Index of the uniform buffer binding</param>
/// <returns>The uniform buffer address, or an undefined value if the buffer is not currently bound</returns>
public ulong GetComputeUniformBufferAddress(int index)
{
return _cpUniformBuffers.Buffers[index].Address;
}
/// <summary>
/// Gets the address of the graphics uniform buffer currently bound at the given index.
/// </summary>
/// <param name="stage">Index of the shader stage</param>
/// <param name="index">Index of the uniform buffer binding</param>
/// <returns>The uniform buffer address, or an undefined value if the buffer is not currently bound</returns>
public ulong GetGraphicsUniformBufferAddress(int stage, int index)
{
return _gpUniformBuffers[stage].Buffers[index].Address;
}
/// <summary>
/// Gets the bounds of the uniform buffer currently bound at the given index.
/// </summary>
/// <param name="isCompute">Indicates whenever the uniform is requested by the 3D or compute engine</param>
/// <param name="stage">Index of the shader stage, if the uniform is for the 3D engine</param>
/// <param name="index">Index of the uniform buffer binding</param>
/// <returns>The uniform buffer bounds, or an undefined value if the buffer is not currently bound</returns>
public ref BufferBounds GetUniformBufferBounds(bool isCompute, int stage, int index)
{
if (isCompute)
{
return ref _cpUniformBuffers.Buffers[index];
}
else
{
return ref _gpUniformBuffers[stage].Buffers[index];
}
}
/// <summary>
/// Ensures that the compute engine bindings are visible to the host GPU.
/// Note: this actually performs the binding using the host graphics API.
/// </summary>
public void CommitComputeBindings()
{
var bufferCache = _channel.MemoryManager.Physical.BufferCache;
BindBuffers(bufferCache, _cpStorageBuffers, isStorage: true);
BindBuffers(bufferCache, _cpUniformBuffers, isStorage: false);
CommitBufferTextureBindings();
// Force rebind after doing compute work.
Rebind();
_context.SupportBufferUpdater.Commit();
}
/// <summary>
/// Commit any queued buffer texture bindings.
/// </summary>
private void CommitBufferTextureBindings()
{
if (_bufferTextures.Count > 0)
{
foreach (var binding in _bufferTextures)
{
var isStore = binding.BindingInfo.Flags.HasFlag(TextureUsageFlags.ImageStore);
var range = _channel.MemoryManager.Physical.BufferCache.GetBufferRange(binding.Address, binding.Size, isStore);
binding.Texture.SetStorage(range);
// The texture must be rebound to use the new storage if it was updated.
if (binding.IsImage)
{
_context.Renderer.Pipeline.SetImage(binding.BindingInfo.Binding, binding.Texture, binding.Format);
}
else
{
_context.Renderer.Pipeline.SetTextureAndSampler(binding.Stage, binding.BindingInfo.Binding, binding.Texture, null);
}
}
_bufferTextures.Clear();
}
}
/// <summary>
/// Ensures that the graphics engine bindings are visible to the host GPU.
/// Note: this actually performs the binding using the host graphics API.
/// </summary>
/// <param name="indexed">True if the index buffer is in use</param>
public void CommitGraphicsBindings(bool indexed)
{
var bufferCache = _channel.MemoryManager.Physical.BufferCache;
if (indexed)
{
if (_indexBufferDirty || _rebind)
{
_indexBufferDirty = false;
if (_indexBuffer.Address != 0)
{
BufferRange buffer = bufferCache.GetBufferRange(_indexBuffer.Address, _indexBuffer.Size);
_context.Renderer.Pipeline.SetIndexBuffer(buffer, _indexBuffer.Type);
}
}
else if (_indexBuffer.Address != 0)
{
bufferCache.SynchronizeBufferRange(_indexBuffer.Address, _indexBuffer.Size);
}
}
else if (_rebind)
{
_indexBufferDirty = true;
}
uint vbEnableMask = _vertexBuffersEnableMask;
if (_vertexBuffersDirty || _rebind)
{
_vertexBuffersDirty = false;
Span<VertexBufferDescriptor> vertexBuffers = stackalloc VertexBufferDescriptor[Constants.TotalVertexBuffers];
for (int index = 0; (vbEnableMask >> index) != 0; index++)
{
VertexBuffer vb = _vertexBuffers[index];
if (vb.Address == 0)
{
continue;
}
BufferRange buffer = bufferCache.GetBufferRange(vb.Address, vb.Size);
vertexBuffers[index] = new VertexBufferDescriptor(buffer, vb.Stride, vb.Divisor);
}
_context.Renderer.Pipeline.SetVertexBuffers(vertexBuffers);
}
else
{
for (int index = 0; (vbEnableMask >> index) != 0; index++)
{
VertexBuffer vb = _vertexBuffers[index];
if (vb.Address == 0)
{
continue;
}
bufferCache.SynchronizeBufferRange(vb.Address, vb.Size);
}
}
if (_transformFeedbackBuffersDirty || _rebind)
{
_transformFeedbackBuffersDirty = false;
if (_context.Capabilities.SupportsTransformFeedback)
{
Span<BufferRange> tfbs = stackalloc BufferRange[Constants.TotalTransformFeedbackBuffers];
for (int index = 0; index < Constants.TotalTransformFeedbackBuffers; index++)
{
BufferBounds tfb = _transformFeedbackBuffers[index];
if (tfb.Address == 0)
{
tfbs[index] = BufferRange.Empty;
continue;
}
tfbs[index] = bufferCache.GetBufferRange(tfb.Address, tfb.Size, write: true);
}
_context.Renderer.Pipeline.SetTransformFeedbackBuffers(tfbs);
}
else if (HasTransformFeedbackOutputs)
{
Span<int> info = _tfInfoData.AsSpan();
Span<BufferAssignment> buffers = stackalloc BufferAssignment[Constants.TotalTransformFeedbackBuffers + 1];
bool needsDataUpdate = false;
if (_tfInfoBuffer == BufferHandle.Null)
{
_tfInfoBuffer = _context.Renderer.CreateBuffer(TfInfoBufferSize, BufferAccess.Stream);
}
buffers[0] = new BufferAssignment(0, new BufferRange(_tfInfoBuffer, 0, TfInfoBufferSize));
int alignment = _context.Capabilities.StorageBufferOffsetAlignment;
for (int index = 0; index < Constants.TotalTransformFeedbackBuffers; index++)
{
BufferBounds tfb = _transformFeedbackBuffers[index];
if (tfb.Address == 0)
{
buffers[1 + index] = new BufferAssignment(1 + index, BufferRange.Empty);
}
else
{
ulong endAddress = tfb.Address + tfb.Size;
ulong address = BitUtils.AlignDown(tfb.Address, (ulong)alignment);
ulong size = endAddress - address;
int tfeOffset = ((int)tfb.Address & (alignment - 1)) / 4;
if (info[index] != tfeOffset)
{
info[index] = tfeOffset;
needsDataUpdate = true;
}
buffers[1 + index] = new BufferAssignment(1 + index, bufferCache.GetBufferRange(address, size, write: true));
}
}
if (needsDataUpdate)
{
Span<byte> infoData = MemoryMarshal.Cast<int, byte>(info);
_context.Renderer.SetBufferData(_tfInfoBuffer, 0, infoData);
}
_context.Renderer.Pipeline.SetStorageBuffers(buffers);
}
}
else
{
for (int index = 0; index < Constants.TotalTransformFeedbackBuffers; index++)
{
BufferBounds tfb = _transformFeedbackBuffers[index];
if (tfb.Address == 0)
{
continue;
}
bufferCache.SynchronizeBufferRange(tfb.Address, tfb.Size);
}
}
if (_gpStorageBuffersDirty || _rebind)
{
_gpStorageBuffersDirty = false;
BindBuffers(bufferCache, _gpStorageBuffers, isStorage: true);
}
else
{
UpdateBuffers(_gpStorageBuffers);
}
if (_gpUniformBuffersDirty || _rebind)
{
_gpUniformBuffersDirty = false;
BindBuffers(bufferCache, _gpUniformBuffers, isStorage: false);
}
else
{
UpdateBuffers(_gpUniformBuffers);
}
CommitBufferTextureBindings();
_rebind = false;
_context.SupportBufferUpdater.Commit();
}
/// <summary>
/// Bind respective buffer bindings on the host API.
/// </summary>
/// <param name="bufferCache">Buffer cache holding the buffers for the specified ranges</param>
/// <param name="bindings">Buffer memory ranges to bind</param>
/// <param name="isStorage">True to bind as storage buffer, false to bind as uniform buffer</param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void BindBuffers(BufferCache bufferCache, BuffersPerStage[] bindings, bool isStorage)
{
int rangesCount = 0;
Span<BufferAssignment> ranges = _ranges;
for (ShaderStage stage = ShaderStage.Vertex; stage <= ShaderStage.Fragment; stage++)
{
ref var buffers = ref bindings[(int)stage - 1];
for (int index = 0; index < buffers.Count; index++)
{
ref var bindingInfo = ref buffers.Bindings[index];
BufferBounds bounds = buffers.Buffers[bindingInfo.Slot];
if (bounds.Address != 0)
{
var isWrite = bounds.Flags.HasFlag(BufferUsageFlags.Write);
var range = isStorage
? bufferCache.GetBufferRangeAligned(bounds.Address, bounds.Size, isWrite)
: bufferCache.GetBufferRange(bounds.Address, bounds.Size);
ranges[rangesCount++] = new BufferAssignment(bindingInfo.Binding, range);
}
}
}
if (rangesCount != 0)
{
SetHostBuffers(ranges, rangesCount, isStorage);
}
}
/// <summary>
/// Bind respective buffer bindings on the host API.
/// </summary>
/// <param name="bufferCache">Buffer cache holding the buffers for the specified ranges</param>
/// <param name="buffers">Buffer memory ranges to bind</param>
/// <param name="isStorage">True to bind as storage buffer, false to bind as uniform buffer</param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void BindBuffers(BufferCache bufferCache, BuffersPerStage buffers, bool isStorage)
{
int rangesCount = 0;
Span<BufferAssignment> ranges = _ranges;
for (int index = 0; index < buffers.Count; index++)
{
ref var bindingInfo = ref buffers.Bindings[index];
BufferBounds bounds = buffers.Buffers[bindingInfo.Slot];
if (bounds.Address != 0)
{
var isWrite = bounds.Flags.HasFlag(BufferUsageFlags.Write);
var range = isStorage
? bufferCache.GetBufferRangeAligned(bounds.Address, bounds.Size, isWrite)
: bufferCache.GetBufferRange(bounds.Address, bounds.Size);
ranges[rangesCount++] = new BufferAssignment(bindingInfo.Binding, range);
}
}
if (rangesCount != 0)
{
SetHostBuffers(ranges, rangesCount, isStorage);
}
}
/// <summary>
/// Bind respective buffer bindings on the host API.
/// </summary>
/// <param name="ranges">Host buffers to bind, with their offsets and sizes</param>
/// <param name="first">First binding point</param>
/// <param name="count">Number of bindings</param>
/// <param name="isStorage">Indicates if the buffers are storage or uniform buffers</param>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private void SetHostBuffers(ReadOnlySpan<BufferAssignment> ranges, int count, bool isStorage)
{
if (isStorage)
{
_context.Renderer.Pipeline.SetStorageBuffers(ranges[..count]);
}
else
{
_context.Renderer.Pipeline.SetUniformBuffers(ranges[..count]);
}
}
/// <summary>
/// Updates data for the already bound buffer bindings.
/// </summary>
/// <param name="bindings">Bindings to update</param>
private void UpdateBuffers(BuffersPerStage[] bindings)
{
for (ShaderStage stage = ShaderStage.Vertex; stage <= ShaderStage.Fragment; stage++)
{
ref var buffers = ref bindings[(int)stage - 1];
for (int index = 0; index < buffers.Count; index++)
{
ref var binding = ref buffers.Bindings[index];
BufferBounds bounds = buffers.Buffers[binding.Slot];
if (bounds.Address == 0)
{
continue;
}
_channel.MemoryManager.Physical.BufferCache.SynchronizeBufferRange(bounds.Address, bounds.Size);
}
}
}
/// <summary>
/// Sets the buffer storage of a buffer texture. This will be bound when the buffer manager commits bindings.
/// </summary>
/// <param name="stage">Shader stage accessing the texture</param>
/// <param name="texture">Buffer texture</param>
/// <param name="address">Address of the buffer in memory</param>
/// <param name="size">Size of the buffer in bytes</param>
/// <param name="bindingInfo">Binding info for the buffer texture</param>
/// <param name="format">Format of the buffer texture</param>
/// <param name="isImage">Whether the binding is for an image or a sampler</param>
public void SetBufferTextureStorage(
ShaderStage stage,
ITexture texture,
ulong address,
ulong size,
TextureBindingInfo bindingInfo,
Format format,
bool isImage)
{
_channel.MemoryManager.Physical.BufferCache.CreateBuffer(address, size);
_bufferTextures.Add(new BufferTextureBinding(stage, texture, address, size, bindingInfo, format, isImage));
}
/// <summary>
/// Force all bound textures and images to be rebound the next time CommitBindings is called.
/// </summary>
public void Rebind()
{
_rebind = true;
}
}
}
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