Struct vk_mem_alloc::ffi::VmaDefragmentationPassMoveInfo

#[repr(C)]
pub struct VmaDefragmentationPassMoveInfo {
    pub moveCount: u32,
    pub pMoves: *mut VmaDefragmentationMove,
}

\brief Parameters for incremental defragmentation steps.

To be used with function vmaBeginDefragmentationPass().

Fields

moveCount: u32

Number of elements in the pMoves array.

pMoves: *mut VmaDefragmentationMove

\brief Array of moves to be performed by the user in the current defragmentation pass.

Pointer to an array of moveCount elements, owned by VMA, created in vmaBeginDefragmentationPass(), destroyed in vmaEndDefragmentationPass().

For each element, you should:

1. Create a new buffer/image in the place pointed by VmaDefragmentationMove::dstMemory + VmaDefragmentationMove::dstOffset.
2. Copy data from the VmaDefragmentationMove::srcAllocation e.g. using vkCmdCopyBuffer, vkCmdCopyImage.
3. Make sure these commands finished executing on the GPU.
4. Destroy the old buffer/image.

Only then you can finish defragmentation pass by calling vmaEndDefragmentationPass(). After this call, the allocation will point to the new place in memory.

Alternatively, if you cannot move specific allocation, you can set VmaDefragmentationMove::operation to #VMA_DEFRAGMENTATION_MOVE_OPERATION_IGNORE.

Alternatively, if you decide you want to completely remove the allocation:

1. Destroy its buffer/image.
2. Set VmaDefragmentationMove::operation to #VMA_DEFRAGMENTATION_MOVE_OPERATION_DESTROY.

Then, after vmaEndDefragmentationPass() the allocation will be freed.

Trait Implementations

impl Clone for VmaDefragmentationPassMoveInfo

fn clone(&self) -> VmaDefragmentationPassMoveInfo

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VmaDefragmentationPassMoveInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for VmaDefragmentationPassMoveInfo