public unsafe DescriptorSets(Api api, DescriptorPool descriptorPool, DescriptorSetLayout layout, Dictionary <uint, DescriptorType> bindingTypes, ulong size)
{
(_api, _descriptorPool, _bindingTypes) = (api, descriptorPool, bindingTypes);
Span <VkDescriptorSetLayout> layouts = stackalloc VkDescriptorSetLayout[(int)size];
for (int i = 0; i < layouts.Length; i++)
{
layouts[i] = layout.VkDescriptorSetLayout;
}
var allocInfo = new DescriptorSetAllocateInfo();
allocInfo.SType = StructureType.DescriptorSetAllocateInfo;
allocInfo.DescriptorPool = descriptorPool.VkDescriptorPool;
allocInfo.DescriptorSetCount = (uint)size;
allocInfo.PSetLayouts = (VkDescriptorSetLayout *)Unsafe.AsPointer(ref layouts[0]);
_vkDescriptorSets = new DescriptorSet[(int)size];
fixed(DescriptorSet *pDescriptorSets = &_vkDescriptorSets[0])
{
Util.Verify(
_api.Vk.AllocateDescriptorSets(_api.Device.VkDevice, allocInfo, pDescriptorSets),
$"{nameof(descriptorPool)}: Cannot allocate descriptor sets");
}
}
public DescriptorSetManager(Api api, DescriptorBinding[] descriptorBindings, ulong maxSets)
{
// Sanity check to avoid binding different resources to the same binding point.
Dictionary <uint, DescriptorType> bindingTypes = new Dictionary <uint, DescriptorType>(descriptorBindings.Length);
foreach (var binding in descriptorBindings)
{
if (bindingTypes.TryAdd(binding.Binding, binding.Type) == false)
{
throw new Exception($"{nameof(DescriptorSetManager)}: Binding collision");
}
}
_descriptorPool = new DescriptorPool(api, descriptorBindings, maxSets);
_descriptorSetLayout = new DescriptorSetLayout(api, descriptorBindings);
_descriptorSets = new DescriptorSets(api, _descriptorPool, _descriptorSetLayout, bindingTypes, maxSets);
}