pub unsafe trait DescriptorSetAllocator: DeviceOwned {
type Alloc: DescriptorSetAlloc;
// Required method
fn allocate(
&self,
layout: &Arc<DescriptorSetLayout>,
variable_descriptor_count: u32
) -> Result<Self::Alloc, Validated<VulkanError>>;
}Expand description
Types that manage the memory of descriptor sets.
Safety
A Vulkan descriptor pool must be externally synchronized as if it owned the descriptor sets that
were allocated from it. This includes allocating from the pool, freeing from the pool and
resetting the pool or individual descriptor sets. The implementation of DescriptorSetAllocator
is expected to manage this.
The destructor of the DescriptorSetAlloc is expected to free the descriptor set, reset the
descriptor set, or add it to a pool so that it gets reused. If the implementation frees or
resets the descriptor set, it must not forget that this operation must be externally
synchronized.
Required Associated Types§
sourcetype Alloc: DescriptorSetAlloc
type Alloc: DescriptorSetAlloc
Object that represented an allocated descriptor set.
The destructor of this object should free the descriptor set.
Required Methods§
sourcefn allocate(
&self,
layout: &Arc<DescriptorSetLayout>,
variable_descriptor_count: u32
) -> Result<Self::Alloc, Validated<VulkanError>>
fn allocate( &self, layout: &Arc<DescriptorSetLayout>, variable_descriptor_count: u32 ) -> Result<Self::Alloc, Validated<VulkanError>>
Allocates a descriptor set.