internal static void Update(DescriptorPool parent,
WriteDescriptorSet[] descriptorWrites, CopyDescriptorSet[] descriptorCopies)
{
int descriptorWriteCount = descriptorWrites?.Length ?? 0;
var nativeDescriptorWritesPtr = stackalloc WriteDescriptorSet.Native[descriptorWriteCount];
for (int i = 0; i < descriptorWriteCount; i++)
{
descriptorWrites[i].ToNative(&nativeDescriptorWritesPtr[i]);
}
int descriptorCopyCount = descriptorCopies?.Length ?? 0;
for (int i = 0; i < descriptorCopyCount; i++)
{
descriptorCopies[i].Prepare();
fixed(CopyDescriptorSet *descriptorCopiesPtr = descriptorCopies)
{
vkUpdateDescriptorSets(
parent.Parent,
descriptorWriteCount,
nativeDescriptorWritesPtr,
descriptorCopyCount,
descriptorCopiesPtr);
}
for (int i = 0; i < descriptorWriteCount; i++)
nativeDescriptorWritesPtr[i].Free(); }
}
internal void ToNative(out Native native, DescriptorPool pool, long *setLayouts)
{
native.Type = StructureType.DescriptorSetAllocateInfo;
native.Next = IntPtr.Zero;
native.DescriptorPool = pool;
native.DescriptorSetCount = DescriptorSetCount;
native.SetLayouts = setLayouts;
}
internal static void Free(DescriptorPool parent, DescriptorSet[] descriptorSets)
{
int count = descriptorSets?.Length ?? 0;
var descriptorSetsPtr = stackalloc long[count];
for (int i = 0; i < count; i++)
{
descriptorSetsPtr[i] = descriptorSets[i];
}
Result result = vkFreeDescriptorSets(parent.Parent, parent, count, descriptorSetsPtr);
VulkanException.ThrowForInvalidResult(result);
}
internal static DescriptorSet[] Allocate(DescriptorPool parent, ref DescriptorSetAllocateInfo createInfo)
{
fixed(long *setLayoutsPtr = createInfo.SetLayouts)
{
createInfo.ToNative(out DescriptorSetAllocateInfo.Native nativeCreateInfo, parent, setLayoutsPtr);
int count = createInfo.SetLayouts?.Length ?? 0;
var descriptorSetsPtr = stackalloc long[count];
Result result = vkAllocateDescriptorSets(parent.Parent, &nativeCreateInfo, descriptorSetsPtr);
VulkanException.ThrowForInvalidResult(result);
var descriptorSets = new DescriptorSet[count];
for (int i = 0; i < count; i++)
{
descriptorSets[i] = new DescriptorSet(parent, descriptorSetsPtr[i]);
}
return(descriptorSets);
}
}
internal DescriptorSet(DescriptorPool parent, long handle)
{
Parent = parent;
Handle = handle;
}
