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using Ryujinx.Graphics.GAL;
using Silk.NET.Vulkan;
using System;
using System.Numerics;
using System.Runtime.CompilerServices;
namespace Ryujinx.Graphics.Vulkan
{
class DescriptorSetTemplate : IDisposable
{
/// <summary>
/// Renderdoc seems to crash when doing a templated uniform update with count > 1 on a push descriptor.
/// When this is true, consecutive buffers are always updated individually.
/// </summary>
private const bool RenderdocPushCountBug = true;
private readonly VulkanRenderer _gd;
private readonly Device _device;
public readonly DescriptorUpdateTemplate Template;
public readonly int Size;
public unsafe DescriptorSetTemplate(
VulkanRenderer gd,
Device device,
ResourceBindingSegment[] segments,
PipelineLayoutCacheEntry plce,
PipelineBindPoint pbp,
int setIndex)
{
_gd = gd;
_device = device;
// Create a template from the set usages. Assumes the descriptor set is updated in segment order then binding order.
DescriptorUpdateTemplateEntry* entries = stackalloc DescriptorUpdateTemplateEntry[segments.Length];
nuint structureOffset = 0;
for (int seg = 0; seg < segments.Length; seg++)
{
ResourceBindingSegment segment = segments[seg];
int binding = segment.Binding;
int count = segment.Count;
if (IsBufferType(segment.Type))
{
entries[seg] = new DescriptorUpdateTemplateEntry()
{
DescriptorType = segment.Type.Convert(),
DstBinding = (uint)binding,
DescriptorCount = (uint)count,
Offset = structureOffset,
Stride = (nuint)Unsafe.SizeOf<DescriptorBufferInfo>()
};
structureOffset += (nuint)(Unsafe.SizeOf<DescriptorBufferInfo>() * count);
}
else if (IsBufferTextureType(segment.Type))
{
entries[seg] = new DescriptorUpdateTemplateEntry()
{
DescriptorType = segment.Type.Convert(),
DstBinding = (uint)binding,
DescriptorCount = (uint)count,
Offset = structureOffset,
Stride = (nuint)Unsafe.SizeOf<BufferView>()
};
structureOffset += (nuint)(Unsafe.SizeOf<BufferView>() * count);
}
else
{
entries[seg] = new DescriptorUpdateTemplateEntry()
{
DescriptorType = segment.Type.Convert(),
DstBinding = (uint)binding,
DescriptorCount = (uint)count,
Offset = structureOffset,
Stride = (nuint)Unsafe.SizeOf<DescriptorImageInfo>()
};
structureOffset += (nuint)(Unsafe.SizeOf<DescriptorImageInfo>() * count);
}
}
Size = (int)structureOffset;
var info = new DescriptorUpdateTemplateCreateInfo()
{
SType = StructureType.DescriptorUpdateTemplateCreateInfo,
DescriptorUpdateEntryCount = (uint)segments.Length,
PDescriptorUpdateEntries = entries,
TemplateType = DescriptorUpdateTemplateType.DescriptorSet,
DescriptorSetLayout = plce.DescriptorSetLayouts[setIndex],
PipelineBindPoint = pbp,
PipelineLayout = plce.PipelineLayout,
Set = (uint)setIndex,
};
DescriptorUpdateTemplate result;
gd.Api.CreateDescriptorUpdateTemplate(device, &info, null, &result).ThrowOnError();
Template = result;
}
public unsafe DescriptorSetTemplate(
VulkanRenderer gd,
Device device,
ResourceDescriptorCollection descriptors,
long updateMask,
PipelineLayoutCacheEntry plce,
PipelineBindPoint pbp,
int setIndex)
{
_gd = gd;
_device = device;
// Create a template from the set usages. Assumes the descriptor set is updated in segment order then binding order.
int segmentCount = BitOperations.PopCount((ulong)updateMask);
DescriptorUpdateTemplateEntry* entries = stackalloc DescriptorUpdateTemplateEntry[segmentCount];
int entry = 0;
nuint structureOffset = 0;
void AddBinding(int binding, int count)
{
entries[entry++] = new DescriptorUpdateTemplateEntry()
{
DescriptorType = DescriptorType.UniformBuffer,
DstBinding = (uint)binding,
DescriptorCount = (uint)count,
Offset = structureOffset,
Stride = (nuint)Unsafe.SizeOf<DescriptorBufferInfo>()
};
structureOffset += (nuint)(Unsafe.SizeOf<DescriptorBufferInfo>() * count);
}
int startBinding = 0;
int bindingCount = 0;
foreach (ResourceDescriptor descriptor in descriptors.Descriptors)
{
for (int i = 0; i < descriptor.Count; i++)
{
int binding = descriptor.Binding + i;
if ((updateMask & (1L << binding)) != 0)
{
if (bindingCount > 0 && (RenderdocPushCountBug || startBinding + bindingCount != binding))
{
AddBinding(startBinding, bindingCount);
bindingCount = 0;
}
if (bindingCount == 0)
{
startBinding = binding;
}
bindingCount++;
}
}
}
if (bindingCount > 0)
{
AddBinding(startBinding, bindingCount);
}
Size = (int)structureOffset;
var info = new DescriptorUpdateTemplateCreateInfo()
{
SType = StructureType.DescriptorUpdateTemplateCreateInfo,
DescriptorUpdateEntryCount = (uint)entry,
PDescriptorUpdateEntries = entries,
TemplateType = DescriptorUpdateTemplateType.PushDescriptorsKhr,
DescriptorSetLayout = plce.DescriptorSetLayouts[setIndex],
PipelineBindPoint = pbp,
PipelineLayout = plce.PipelineLayout,
Set = (uint)setIndex,
};
DescriptorUpdateTemplate result;
gd.Api.CreateDescriptorUpdateTemplate(device, &info, null, &result).ThrowOnError();
Template = result;
}
private static bool IsBufferType(ResourceType type)
{
return type == ResourceType.UniformBuffer || type == ResourceType.StorageBuffer;
}
private static bool IsBufferTextureType(ResourceType type)
{
return type == ResourceType.BufferTexture || type == ResourceType.BufferImage;
}
public unsafe void Dispose()
{
_gd.Api.DestroyDescriptorUpdateTemplate(_device, Template, null);
}
}
}
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