Package icyllis.arc3d.engine

Interface Engine.BufferUsageFlags

Enclosing interface:
Engine
public static interface Engine.BufferUsageFlags
Describes the intended usage (type + access) a GPU buffer. This will affect memory allocation and pipeline commands.

Note that the special type flag kUpload and kReadback cannot be combined with other type flags, and must be kHostVisible.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    kAccessMask
     
    static final int
    kDeviceLocal
    Data store will be written to once by CPU.
    static final int
    kDrawIndirect
    Indirect buffer, also known as argument buffer.
    static final int
    kHostVisible
    Data store will be written to occasionally, CPU writes, GPU reads.
    static final int
    kIndex
    Index buffer, also known as element buffer.
    static final int
    kReadback
    Read-back buffers for device to CPU transfer.
    static final int
    kStorage
    Shader storage buffer, may be combined with other type flags.
    static final int
    kTypeMask
     
    static final int
    kUniform
    Uniform buffer, also known as constant buffer.
    static final int
    kUpload
    Staging buffers for CPU to device transfer.
    static final int
    kVertex
    Vertex buffer (also includes instance buffer).

  • Field Details

    • kVertex

      static final int kVertex
      Vertex buffer (also includes instance buffer).
      See Also:

    • kIndex

      static final int kIndex
      Index buffer, also known as element buffer.
      See Also:

    • kDrawIndirect

      static final int kDrawIndirect
      Indirect buffer, also known as argument buffer. Not always available, check caps first.
      See Also:

    • kUpload

      static final int kUpload
      Staging buffers for CPU to device transfer.
      See Also:

    • kReadback

      static final int kReadback
      Read-back buffers for device to CPU transfer.
      See Also:

    • kUniform

      static final int kUniform
      Uniform buffer, also known as constant buffer. It's better not to combine this with other type flags.
      See Also:

    • kStorage

      static final int kStorage
      Shader storage buffer, may be combined with other type flags.
      See Also:

    • kDeviceLocal

      static final int kDeviceLocal
      Data store will be written to once by CPU. Use device-local only memory. A staging buffer is required to update it contents. For static or dynamic VBO, static UBO.
      See Also:

    • kHostVisible

      static final int kHostVisible
      Data store will be written to occasionally, CPU writes, GPU reads. Use host-visible host-coherent memory and persistent mapping, and possibly device-local. If write-combined memory is used, then write directly and requires sync. For streaming VBO, dynamic or streaming UBO.
      See Also:

    • kTypeMask

      static final int kTypeMask
      See Also:

    • kAccessMask

      static final int kAccessMask
      See Also: