Package org.lwjgl

Class BufferUtils

  • public final class BufferUtils
extends java.lang.Object
    Some often-used Buffer code for creating native buffers of the appropriate size.
    Version:
    $Revision$ $Id$
    Author:
    $Author$

    • Constructor Summary

      Constructors 
      Constructor Description
      BufferUtils()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.nio.ByteBuffer createByteBuffer​(int size)
      Construct a direct native-ordered bytebuffer with the specified size.
      static java.nio.CharBuffer createCharBuffer​(int size)
      Construct a direct native-order charbuffer with the specified number of elements.
      static java.nio.DoubleBuffer createDoubleBuffer​(int size)
      Construct a direct native-order doublebuffer with the specified number of elements.
      static java.nio.FloatBuffer createFloatBuffer​(int size)
      Construct a direct native-order floatbuffer with the specified number of elements.
      static java.nio.IntBuffer createIntBuffer​(int size)
      Construct a direct native-order intbuffer with the specified number of elements.
      static java.nio.LongBuffer createLongBuffer​(int size)
      Construct a direct native-order longbuffer with the specified number of elements.
      static PointerBuffer createPointerBuffer​(int size)
      Construct a PointerBuffer with the specified number of elements.
      static java.nio.ShortBuffer createShortBuffer​(int size)
      Construct a direct native-order shortbuffer with the specified number of elements.
      static int getElementSizeExponent​(java.nio.Buffer buf)  
      static int getOffset​(java.nio.Buffer buffer)
      A helper function which is used to get the byte offset in an arbitrary buffer based on its position
      static void zeroBuffer​(java.nio.ByteBuffer b)
      Fill buffer with zeros from position to remaining
      static void zeroBuffer​(java.nio.CharBuffer b)
      Fill buffer with zeros from position to remaining
      static void zeroBuffer​(java.nio.DoubleBuffer b)
      Fill buffer with zeros from position to remaining
      static void zeroBuffer​(java.nio.FloatBuffer b)
      Fill buffer with zeros from position to remaining
      static void zeroBuffer​(java.nio.IntBuffer b)
      Fill buffer with zeros from position to remaining
      static void zeroBuffer​(java.nio.LongBuffer b)
      Fill buffer with zeros from position to remaining
      static void zeroBuffer​(java.nio.ShortBuffer b)
      Fill buffer with zeros from position to remaining

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • BufferUtils

        public BufferUtils()

    • Method Detail

      • createByteBuffer

        public static java.nio.ByteBuffer createByteBuffer​(int size)
        Construct a direct native-ordered bytebuffer with the specified size.
        Parameters:
        size - The size, in bytes
        Returns:
        a ByteBuffer

      • createShortBuffer

        public static java.nio.ShortBuffer createShortBuffer​(int size)
        Construct a direct native-order shortbuffer with the specified number of elements.
        Parameters:
        size - The size, in shorts
        Returns:
        a ShortBuffer

      • createCharBuffer

        public static java.nio.CharBuffer createCharBuffer​(int size)
        Construct a direct native-order charbuffer with the specified number of elements.
        Parameters:
        size - The size, in chars
        Returns:
        an CharBuffer

      • createIntBuffer

        public static java.nio.IntBuffer createIntBuffer​(int size)
        Construct a direct native-order intbuffer with the specified number of elements.
        Parameters:
        size - The size, in ints
        Returns:
        an IntBuffer

      • createLongBuffer

        public static java.nio.LongBuffer createLongBuffer​(int size)
        Construct a direct native-order longbuffer with the specified number of elements.
        Parameters:
        size - The size, in longs
        Returns:
        an LongBuffer

      • createFloatBuffer

        public static java.nio.FloatBuffer createFloatBuffer​(int size)
        Construct a direct native-order floatbuffer with the specified number of elements.
        Parameters:
        size - The size, in floats
        Returns:
        a FloatBuffer

      • createDoubleBuffer

        public static java.nio.DoubleBuffer createDoubleBuffer​(int size)
        Construct a direct native-order doublebuffer with the specified number of elements.
        Parameters:
        size - The size, in floats
        Returns:
        a FloatBuffer

      • createPointerBuffer

        public static PointerBuffer createPointerBuffer​(int size)
        Construct a PointerBuffer with the specified number of elements.
        Parameters:
        size - The size, in memory addresses
        Returns:
        a PointerBuffer

      • getElementSizeExponent

        public static int getElementSizeExponent​(java.nio.Buffer buf)
        Returns:
        n, where buffer_element_size=2^n.

      • getOffset

        public static int getOffset​(java.nio.Buffer buffer)
        A helper function which is used to get the byte offset in an arbitrary buffer based on its position
        Returns:
        the position of the buffer, in BYTES

      • zeroBuffer

        public static void zeroBuffer​(java.nio.ByteBuffer b)
        Fill buffer with zeros from position to remaining

      • zeroBuffer

        public static void zeroBuffer​(java.nio.ShortBuffer b)
        Fill buffer with zeros from position to remaining

      • zeroBuffer

        public static void zeroBuffer​(java.nio.CharBuffer b)
        Fill buffer with zeros from position to remaining

      • zeroBuffer

        public static void zeroBuffer​(java.nio.IntBuffer b)
        Fill buffer with zeros from position to remaining

      • zeroBuffer

        public static void zeroBuffer​(java.nio.FloatBuffer b)
        Fill buffer with zeros from position to remaining

      • zeroBuffer

        public static void zeroBuffer​(java.nio.LongBuffer b)
        Fill buffer with zeros from position to remaining

      • zeroBuffer

        public static void zeroBuffer​(java.nio.DoubleBuffer b)
        Fill buffer with zeros from position to remaining