The FloatBuffer class that is backed by the byte buffer upon which The asFloatBuffer method, for example, creates an instance of Position, limit, and mark values are independent. Will be visible in the view buffer, and vice versa the two buffers' A view buffer is simply another buffer whoseĬontent is backed by the byte buffer. The same type, this class defines methods that can create views of a Parameters of the absolute get and put methods are in terms ofīytes rather than of the type being read or written.įor access to homogeneous binary data, that is, sequences of values of For 32-bit floating-pointĬorresponding methods are defined for the types char,
The initial order of a byte buffer is always BIG_ENDIAN.įor access to heterogeneous binary data, that is, sequences of values ofĭifferent types, this class defines a family of absolute and relative Specific byte orders are represented by instances of the ByteOrder class. Order, which may be retrieved and modified via the order
To (or from) sequences of bytes according to the buffer's current byte This class defines methods for reading and writing values of all other That explicit buffer management can be done in performance-critical code. Whether a byte buffer is direct or non-direct may be determined by Time of the access or at some later time. Of memory then an attempt to access that region will not change the buffer'sĬontent and will cause an unspecified exception to be thrown either at the Instance of one of these kinds of buffers refers to an inaccessible region
JAVA LWJGL BYTE BUFFER TO TEXTURE CODE
Support the creation of direct byte buffers from native code via JNI. An implementation of the Java platform may optionally
In general it is best to allocate directīuffers only when they yield a measureable gain in program performance.Ī direct byte buffer may also be created by mapping a region of a fileĭirectly into memory. Primarily for large, long-lived buffers that are subject to the underlying It is therefore recommended that direct buffers be allocated Their impact upon the memory footprint of an application might not be The contents of directīuffers may reside outside of the normal garbage-collected heap, and so Theīuffers returned by this method typically have somewhat higher allocationĪnd deallocation costs than non-direct buffers. That is, it will attempt toĪvoid copying the buffer's content to (or from) an intermediate bufferīefore (or after) each invocation of one of the underlying operatingĪ direct byte buffer may be created by invoking the allocateDirect factory method of this class. Perform native I/O operations directly upon it. Given aĭirect byte buffer, the Java virtual machine will make a best effort to Methods for compacting, duplicating, and slicing a byte buffer.īyte buffers can be created either by allocation, which allocates space for the buffer'sĪ byte buffer is either direct or non-direct. Which allow a byte buffer to be viewed as a buffer containing values of Sequences of bytes in a particular byte order Write values of other primitive types, translating them to and from Methods that transfer contiguous sequences of bytes from a Methods that transfer contiguous sequences of bytes from this buffer This class defines six categories of operations upon
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