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using Ryujinx.Graphics.GAL;
using Silk.NET.Vulkan;
using System.Collections.ObjectModel;
namespace Ryujinx.Graphics.Vulkan
{
static class PipelineLayoutFactory
{
public static unsafe (DescriptorSetLayout[], PipelineLayout) Create(
VulkanRenderer gd,
Device device,
ReadOnlyCollection<ResourceDescriptorCollection> setDescriptors,
bool usePushDescriptors)
{
DescriptorSetLayout[] layouts = new DescriptorSetLayout[setDescriptors.Count];
bool isMoltenVk = gd.IsMoltenVk;
for (int setIndex = 0; setIndex < setDescriptors.Count; setIndex++)
{
ResourceDescriptorCollection rdc = setDescriptors[setIndex];
ResourceStages activeStages = ResourceStages.None;
if (isMoltenVk)
{
for (int descIndex = 0; descIndex < rdc.Descriptors.Count; descIndex++)
{
activeStages |= rdc.Descriptors[descIndex].Stages;
}
}
DescriptorSetLayoutBinding[] layoutBindings = new DescriptorSetLayoutBinding[rdc.Descriptors.Count];
for (int descIndex = 0; descIndex < rdc.Descriptors.Count; descIndex++)
{
ResourceDescriptor descriptor = rdc.Descriptors[descIndex];
ResourceStages stages = descriptor.Stages;
if (descriptor.Type == ResourceType.StorageBuffer && isMoltenVk)
{
// There's a bug on MoltenVK where using the same buffer across different stages
// causes invalid resource errors, allow the binding on all active stages as workaround.
stages = activeStages;
}
layoutBindings[descIndex] = new DescriptorSetLayoutBinding()
{
Binding = (uint)descriptor.Binding,
DescriptorType = descriptor.Type.Convert(),
DescriptorCount = (uint)descriptor.Count,
StageFlags = stages.Convert()
};
}
fixed (DescriptorSetLayoutBinding* pLayoutBindings = layoutBindings)
{
var descriptorSetLayoutCreateInfo = new DescriptorSetLayoutCreateInfo()
{
SType = StructureType.DescriptorSetLayoutCreateInfo,
PBindings = pLayoutBindings,
BindingCount = (uint)layoutBindings.Length,
Flags = usePushDescriptors && setIndex == 0 ? DescriptorSetLayoutCreateFlags.PushDescriptorBitKhr : DescriptorSetLayoutCreateFlags.None
};
gd.Api.CreateDescriptorSetLayout(device, descriptorSetLayoutCreateInfo, null, out layouts[setIndex]).ThrowOnError();
}
}
PipelineLayout layout;
fixed (DescriptorSetLayout* pLayouts = layouts)
{
var pipelineLayoutCreateInfo = new PipelineLayoutCreateInfo()
{
SType = StructureType.PipelineLayoutCreateInfo,
PSetLayouts = pLayouts,
SetLayoutCount = (uint)layouts.Length
};
gd.Api.CreatePipelineLayout(device, &pipelineLayoutCreateInfo, null, out layout).ThrowOnError();
}
return (layouts, layout);
}
}
}
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