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using Ryujinx.Graphics.GAL;
using System;
using System.Collections.Generic;
namespace Ryujinx.Graphics.Vulkan
{
class ResourceLayoutBuilder
{
private const int TotalSets = PipelineBase.DescriptorSetLayouts;
private readonly List<ResourceDescriptor>[] _resourceDescriptors;
private readonly List<ResourceUsage>[] _resourceUsages;
public ResourceLayoutBuilder()
{
_resourceDescriptors = new List<ResourceDescriptor>[TotalSets];
_resourceUsages = new List<ResourceUsage>[TotalSets];
for (int index = 0; index < TotalSets; index++)
{
_resourceDescriptors[index] = new();
_resourceUsages[index] = new();
}
}
public ResourceLayoutBuilder Add(ResourceStages stages, ResourceType type, int binding, bool write = false)
{
int setIndex = type switch
{
ResourceType.UniformBuffer => PipelineBase.UniformSetIndex,
ResourceType.StorageBuffer => PipelineBase.StorageSetIndex,
ResourceType.TextureAndSampler or ResourceType.BufferTexture => PipelineBase.TextureSetIndex,
ResourceType.Image or ResourceType.BufferImage => PipelineBase.ImageSetIndex,
_ => throw new ArgumentException($"Invalid resource type \"{type}\"."),
};
_resourceDescriptors[setIndex].Add(new ResourceDescriptor(binding, 1, type, stages));
_resourceUsages[setIndex].Add(new ResourceUsage(binding, 1, type, stages, write));
return this;
}
public ResourceLayout Build()
{
var descriptors = new ResourceDescriptorCollection[TotalSets];
var usages = new ResourceUsageCollection[TotalSets];
for (int index = 0; index < TotalSets; index++)
{
descriptors[index] = new ResourceDescriptorCollection(_resourceDescriptors[index].ToArray().AsReadOnly());
usages[index] = new ResourceUsageCollection(_resourceUsages[index].ToArray().AsReadOnly());
}
return new ResourceLayout(descriptors.AsReadOnly(), usages.AsReadOnly());
}
}
}
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