Class VmaPoolCreateFlags

java.lang.Object
club.doki7.vma.bitmask.VmaPoolCreateFlags
public final class VmaPoolCreateFlags extends Object
Flags to be passed as VmaPoolCreateInfo::flags.

  • Field Details

    • FLAG_BITS_MAX_ENUM

      public static final int FLAG_BITS_MAX_ENUM
      See Also:

    • IGNORE_BUFFER_IMAGE_GRANULARITY

      public static final int IGNORE_BUFFER_IMAGE_GRANULARITY

      Use this flag if you always allocate only buffers and linear images or only optimal images out of this pool and so Buffer-Image Granularity can be ignored.

      This is an optional optimization flag.

      If you always allocate using vmaCreateBuffer(), vmaCreateImage(), vmaAllocateMemoryForBuffer(), then you don't need to use it because allocator knows exact type of your allocations so it can handle Buffer-Image Granularity in the optimal way.

      If you also allocate using vmaAllocateMemoryForImage() or vmaAllocateMemory(), exact type of such allocations is not known, so allocator must be conservative in handling Buffer-Image Granularity, which can lead to suboptimal allocation (wasted memory). In that case, if you can make sure you always allocate only buffers and linear images or only optimal images out of this pool, use this flag to make allocator disregard Buffer-Image Granularity and so make allocations faster and more optimal.

      See Also:

    • LINEAR_ALGORITHM

      public static final int LINEAR_ALGORITHM

      Enables alternative, linear allocation algorithm in this pool.

      Specify this flag to enable linear allocation algorithm, which always creates new allocations after last one and doesn't reuse space from allocations freed in between. It trades memory consumption for simplified algorithm and data structure, which has better performance and uses less memory for metadata.

      By using this flag, you can achieve behavior of free-at-once, stack, ring buffer, and double stack. For details, see documentation chapter linear_algorithm.

      See Also:

    • ALGORITHM_MASK

      public static final int ALGORITHM_MASK
      Bit mask to extract only ALGORITHM bits from entire set of flags.
      See Also:

  • Method Details