com.jme3.opencl.lwjgl

Class LwjglBuffer

java.lang.Object

com.jme3.opencl.AbstractOpenCLObject

com.jme3.opencl.Buffer

com.jme3.opencl.lwjgl.LwjglBuffer

All Implemented Interfaces:

OpenCLObject

public class LwjglBuffer
extends Buffer

Nested Class Summary

Nested classes/interfaces inherited from class com.jme3.opencl.Buffer

Buffer.AsyncMapping

Nested classes/interfaces inherited from interface com.jme3.opencl.OpenCLObject

OpenCLObject.ObjectReleaser

Field Summary

Fields inherited from class com.jme3.opencl.AbstractOpenCLObject

releaser

Constructor Summary

Constructors

Constructor and Description
LwjglBuffer(org.lwjgl.opencl.CLMem buffer)

Method Summary

Modifier and Type	Method and Description
Event	acquireBufferForSharingAsync(CommandQueue queue) Acquires this buffer object for using.
void	acquireBufferForSharingNoEvent(CommandQueue queue) Acquires this buffer object for using.
void	copyTo(CommandQueue queue, Buffer dest, long size, long srcOffset, long destOffset) Performs a blocking copy operation from this buffer to the specified buffer.
Event	copyToAsync(CommandQueue queue, Buffer dest, long size, long srcOffset, long destOffset) Performs an async/non-blocking copy operation from this buffer to the specified buffer.
Event	copyToImageAsync(CommandQueue queue, Image dest, long srcOffset, long[] destOrigin, long[] destRegion) Copies this buffer to the specified image.
Event	fillAsync(CommandQueue queue, java.nio.ByteBuffer pattern, long size, long offset) Enqueues a fill operation.
org.lwjgl.opencl.CLMem	getBuffer()
MemoryAccess	getMemoryAccessFlags()
long	getSize()
java.nio.ByteBuffer	map(CommandQueue queue, long size, long offset, MappingAccess access) Maps this buffer directly into host memory.
Buffer.AsyncMapping	mapAsync(CommandQueue queue, long size, long offset, MappingAccess access) Maps this buffer asynchronously into host memory.
void	read(CommandQueue queue, java.nio.ByteBuffer dest, long size, long offset) Performs a blocking read of the buffer.
Event	readAsync(CommandQueue queue, java.nio.ByteBuffer dest, long size, long offset) Performs an async/non-blocking read of the buffer.
Event	releaseBufferForSharingAsync(CommandQueue queue) Releases a shared buffer object.
void	releaseBufferForSharingNoEvent(CommandQueue queue) Releases a shared buffer object.
void	unmap(CommandQueue queue, java.nio.ByteBuffer ptr) Unmaps a previously mapped memory.
void	write(CommandQueue queue, java.nio.ByteBuffer src, long size, long offset) Performs a blocking write to the buffer.
Event	writeAsync(CommandQueue queue, java.nio.ByteBuffer src, long size, long offset) Performs an async/non-blocking write to the buffer.

Methods inherited from class com.jme3.opencl.Buffer

copyTo, copyTo, copyToAsync, copyToAsync, map, map, mapAsync, mapAsync, read, read, readAsync, readAsync, register, toString, write, write, writeAsync, writeAsync

Methods inherited from class com.jme3.opencl.AbstractOpenCLObject

finalize, getReleaser, release

Methods inherited from class java.lang.Object

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

Constructor Detail

LwjglBuffer

public LwjglBuffer(org.lwjgl.opencl.CLMem buffer)

Method Detail

getBuffer

public org.lwjgl.opencl.CLMem getBuffer()

getSize

public long getSize()

Specified by:

getSize in class Buffer

Returns:

the size of the buffer in bytes.

See Also:

Context.createBuffer(long)

getMemoryAccessFlags

public MemoryAccess getMemoryAccessFlags()

Specified by:

getMemoryAccessFlags in class Buffer

Returns:

the memory access flags set on creation.

See Also:

Context.createBuffer(long, com.jme3.opencl.MemoryAccess)

read

public void read(CommandQueue queue,
                 java.nio.ByteBuffer dest,
                 long size,
                 long offset)

Description copied from class: Buffer

Performs a blocking read of the buffer. The target buffer must have at least size bytes remaining. This method may set the limit to the last byte read.

Specified by:

read in class Buffer

Parameters:

queue - the command queue

dest - the target buffer

size - the size in bytes being read

offset - the offset in bytes in the buffer to read from

readAsync

public Event readAsync(CommandQueue queue,
                       java.nio.ByteBuffer dest,
                       long size,
                       long offset)

Description copied from class: Buffer

Performs an async/non-blocking read of the buffer. The target buffer must have at least size bytes remaining. This method may set the limit to the last byte read.

Specified by:

readAsync in class Buffer

Parameters:

queue - the command queue

dest - the target buffer

size - the size in bytes being read

offset - the offset in bytes in the buffer to read from

Returns:

the event indicating when the memory has been fully read into the provided buffer

write

public void write(CommandQueue queue,
                  java.nio.ByteBuffer src,
                  long size,
                  long offset)

Description copied from class: Buffer

Performs a blocking write to the buffer. The target buffer must have at least size bytes remaining. This method may set the limit to the last byte that will be written.

Specified by:

write in class Buffer

Parameters:

queue - the command queue

src - the source buffer, its data is written to this buffer

size - the size in bytes to write

offset - the offset into the target buffer

writeAsync

public Event writeAsync(CommandQueue queue,
                        java.nio.ByteBuffer src,
                        long size,
                        long offset)

Description copied from class: Buffer

Performs an async/non-blocking write to the buffer. The target buffer must have at least size bytes remaining. This method may set the limit to the last byte that will be written.

Specified by:

writeAsync in class Buffer

Parameters:

queue - the command queue

src - the source buffer, its data is written to this buffer

size - the size in bytes to write

offset - the offset into the target buffer

Returns:

an Event to indicate completion

copyTo

public void copyTo(CommandQueue queue,
                   Buffer dest,
                   long size,
                   long srcOffset,
                   long destOffset)

Description copied from class: Buffer

Performs a blocking copy operation from this buffer to the specified buffer.

Specified by:

copyTo in class Buffer

Parameters:

queue - the command queue

dest - the target buffer

size - the size in bytes to copy

srcOffset - offset in bytes into this buffer

destOffset - offset in bytes into the target buffer

copyToAsync

public Event copyToAsync(CommandQueue queue,
                         Buffer dest,
                         long size,
                         long srcOffset,
                         long destOffset)

Description copied from class: Buffer

Performs an async/non-blocking copy operation from this buffer to the specified buffer.

Specified by:

copyToAsync in class Buffer

Parameters:

queue - the command queue

dest - the target buffer

size - the size in bytes to copy

srcOffset - offset in bytes into this buffer

destOffset - offset in bytes into the target buffer

Returns:

the event object indicating when the copy operation is finished

map

public java.nio.ByteBuffer map(CommandQueue queue,
                               long size,
                               long offset,
                               MappingAccess access)

Description copied from class: Buffer

Maps this buffer directly into host memory. This might be the fastest method to access the contents of the buffer since the OpenCL implementation directly provides the memory.
Important: The mapped memory MUST be released by calling Buffer.unmap(com.jme3.opencl.CommandQueue, java.nio.ByteBuffer).

Specified by:

map in class Buffer

Parameters:

queue - the command queue

size - the size in bytes to map

offset - the offset into this buffer

access - specifies the possible access to the memory: READ_ONLY, WRITE_ONLY, READ_WRITE

Returns:

the byte buffer directly reflecting the buffer contents

unmap

public void unmap(CommandQueue queue,
                  java.nio.ByteBuffer ptr)

Description copied from class: Buffer

Unmaps a previously mapped memory. This releases the native resources and for WRITE_ONLY or READ_WRITE access, the memory content is sent back to the GPU.

Specified by:

unmap in class Buffer

Parameters:

queue - the command queue

ptr - the buffer that was previously mapped

mapAsync

public Buffer.AsyncMapping mapAsync(CommandQueue queue,
                                    long size,
                                    long offset,
                                    MappingAccess access)

Description copied from class: Buffer

Maps this buffer asynchronously into host memory. This might be the fastest method to access the contents of the buffer since the OpenCL implementation directly provides the memory.
Important: The mapped memory MUST be released by calling Buffer.unmap(com.jme3.opencl.CommandQueue, java.nio.ByteBuffer).

Specified by:

mapAsync in class Buffer

Parameters:

queue - the command queue

size - the size in bytes to map

offset - the offset into this buffer

access - specifies the possible access to the memory: READ_ONLY, WRITE_ONLY, READ_WRITE

Returns:

the byte buffer directly reflecting the buffer contents and the event indicating when the buffer contents are available

fillAsync

public Event fillAsync(CommandQueue queue,
                       java.nio.ByteBuffer pattern,
                       long size,
                       long offset)

Description copied from class: Buffer

Enqueues a fill operation. This method can be used to initialize or clear a buffer with a certain value.

Specified by:

fillAsync in class Buffer

Parameters:

queue - the command queue

pattern - the buffer containing the filling pattern. The remaining bytes specify the pattern length

size - the size in bytes to fill, must be a multiple of the pattern length

offset - the offset in bytes into the buffer, must be a multiple of the pattern length

Returns:

an event indicating when this operation is finished

copyToImageAsync

public Event copyToImageAsync(CommandQueue queue,
                              Image dest,
                              long srcOffset,
                              long[] destOrigin,
                              long[] destRegion)

Description copied from class: Buffer

Copies this buffer to the specified image. Note that no format conversion is done.
For detailed description of the origin and region parameter, see the documentation of the Image class.

Specified by:

copyToImageAsync in class Buffer

Parameters:

queue - the command queue

dest - the target image

srcOffset - the offset in bytes into this buffer

destOrigin - the origin of the copied area

destRegion - the size of the copied area

Returns:

the event object

acquireBufferForSharingAsync

public Event acquireBufferForSharingAsync(CommandQueue queue)

Description copied from class: Buffer

Acquires this buffer object for using. Only call this method if this buffer represents a shared object from OpenGL, created with e.g. Context.bindVertexBuffer(com.jme3.scene.VertexBuffer, com.jme3.opencl.MemoryAccess). This method must be called before the buffer is used. After the work is done, the buffer must be released by calling Buffer.releaseBufferForSharingAsync(com.jme3.opencl.CommandQueue) so that OpenGL can use the VertexBuffer again.

Specified by:

acquireBufferForSharingAsync in class Buffer

Parameters:

queue - the command queue

Returns:

the event object

acquireBufferForSharingNoEvent

public void acquireBufferForSharingNoEvent(CommandQueue queue)

Description copied from class: Buffer

Acquires this buffer object for using. Only call this method if this buffer represents a shared object from OpenGL, created with e.g. Context.bindVertexBuffer(com.jme3.scene.VertexBuffer, com.jme3.opencl.MemoryAccess). This method must be called before the buffer is used. After the work is done, the buffer must be released by calling Buffer.releaseBufferForSharingAsync(com.jme3.opencl.CommandQueue) so that OpenGL can use the VertexBuffer again. The generated event object is directly released. This brings a performance improvement when the resource is e.g. directly used by a kernel afterwards on the same queue (this implicitly waits for this action). If you need the event, use Buffer.acquireBufferForSharingAsync(com.jme3.opencl.CommandQueue) instead.

Overrides:

acquireBufferForSharingNoEvent in class Buffer

Parameters:

queue - the command queue

releaseBufferForSharingAsync

public Event releaseBufferForSharingAsync(CommandQueue queue)

Description copied from class: Buffer

Releases a shared buffer object. Call this method after the buffer object was acquired by Buffer.acquireBufferForSharingAsync(com.jme3.opencl.CommandQueue) to hand the control back to OpenGL.

Specified by:

releaseBufferForSharingAsync in class Buffer

Parameters:

queue - the command queue

Returns:

the event object

releaseBufferForSharingNoEvent

public void releaseBufferForSharingNoEvent(CommandQueue queue)

Description copied from class: Buffer

Releases a shared buffer object. Call this method after the buffer object was acquired by Buffer.acquireBufferForSharingAsync(com.jme3.opencl.CommandQueue) to hand the control back to OpenGL. The generated event object is directly released, resulting in performance improvements.

Overrides:

releaseBufferForSharingNoEvent in class Buffer

Parameters:

queue - the command queue