/// <summary>
/// Create a new descriptor type binding
/// </summary>
/// <param name="key">key for this descriptor set</param>
/// <param name="layout">what type of data does this descriptor set have?</param>
public virtual void InsertKey(
string key,
API.DescriptorLayout layout
)
{
if (_handle.ContainsKey(key))
{
return;
}
if (layout == null)
{
_handle[key] = new DescriptorObject();
return;
}
var pool = new API.DescriptorPool(layout, 1);
_handle[key] = new DescriptorObject
{
Layout = layout,
Pool = pool,
Set = new API.DescriptorSet(pool),
StagingBuffers = new API.Buffer[layout.Bindings.Count],
Buffers = new API.Buffer[layout.Bindings.Count],
Images = new API.Image[layout.Bindings.Count],
ImageViews = new API.ImageView[layout.Bindings.Count],
Samplers = new API.Sampler[layout.Bindings.Count],
CommandBuffer = new API.CommandBuffer[layout.Bindings.Count]
};
}
public unsafe DescriptorPool(DescriptorLayout layout, uint maxSets)
{
_device = layout.Device;
_layout = layout;
_maxSets = maxSets;
var poolSizes = new List <VkDescriptorPoolSize>();
foreach (var binding in layout.Bindings)
{
var poolSizeIndex = poolSizes.FindIndex(
p => p.type == binding.DescriptorType
);
if (poolSizeIndex == -1)
{
poolSizes.Add(new VkDescriptorPoolSize
{
type = binding.DescriptorType,
descriptorCount = binding.DescriptorCounts
});
}
else
{
poolSizes[poolSizeIndex] = new VkDescriptorPoolSize
{
type = binding.DescriptorType,
descriptorCount = (
poolSizes[poolSizeIndex].descriptorCount +
binding.DescriptorCounts
)
};
}
}
var vulkanPoolSizes = new NativeList <VkDescriptorPoolSize>();
foreach (var p in poolSizes)
{
vulkanPoolSizes.Add(p);
}
var createInfo = new VkDescriptorPoolCreateInfo
{
sType = VkStructureType.DescriptorPoolCreateInfo,
maxSets = maxSets,
poolSizeCount = vulkanPoolSizes.Count,
pPoolSizes = (VkDescriptorPoolSize *)vulkanPoolSizes.Data.ToPointer()
};
VkDescriptorPool descriptorPool;
if (VulkanNative.vkCreateDescriptorPool(
_device.Handle,
&createInfo,
null,
&descriptorPool
) != VkResult.Success)
{
throw new Exception("failed to create descriptor pool");
}
_handle = descriptorPool;
}
