Class ARBCopyBuffer
- java.lang.Object
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- org.lwjgl.opengl.ARBCopyBuffer
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public class ARBCopyBuffer extends java.lang.Object
Native bindings to the ARB_copy_buffer extension.This extension provides a mechanism to do an accelerated copy from one buffer object to another. This may be useful to load buffer objects in a "loading thread" while minimizing cost and synchronization effort in the "rendering thread."
Promoted to core in
OpenGL 3.1
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Field Summary
Fields Modifier and Type Field and Description static int
GL_COPY_READ_BUFFER
GL_COPY_WRITE_BUFFERAccepted by the target parameters of BindBuffer, BufferData, BufferSubData, MapBuffer, UnmapBuffer, GetBufferSubData, GetBufferPointerv, MapBufferRange, FlushMappedBufferRange, GetBufferParameteriv, BindBufferRange, BindBufferBase, and CopyBufferSubData.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method and Description static void
glCopyBufferSubData(int readTarget, int writeTarget, long readOffset, long writeOffset, long size)
Copies all or part of one buffer object's data store to the data store of another buffer object.
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Field Detail
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GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER
Accepted by the target parameters of BindBuffer, BufferData, BufferSubData, MapBuffer, UnmapBuffer, GetBufferSubData, GetBufferPointerv, MapBufferRange, FlushMappedBufferRange, GetBufferParameteriv, BindBufferRange, BindBufferBase, and CopyBufferSubData.
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Method Detail
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glCopyBufferSubData
public static void glCopyBufferSubData(int readTarget, int writeTarget, long readOffset, long writeOffset, long size)
Copies all or part of one buffer object's data store to the data store of another buffer object.An
INVALID_VALUE
error is generated if any of readoffset, writeoffset, or size are negative, if readoffset+size exceeds the size of the buffer object bound to readtarget, or if writeoffset+size exceeds the size of the buffer object bound to writetarget.An
INVALID_VALUE
error is generated if the same buffer object is bound to both readtarget and writetarget, and the ranges [readoffset, readoffset+size) and [writeoffset, writeoffset+size) overlap.An
INVALID_OPERATION
error is generated if zero is bound to readtarget or writetarget.An
INVALID_OPERATION
error is generated if the buffer objects bound to either readtarget or writetarget are mapped.- Parameters:
readTarget
- the source buffer object target. One of:ARRAY_BUFFER
COPY_READ_BUFFER
COPY_WRITE_BUFFER
ELEMENT_ARRAY_BUFFER
PIXEL_PACK_BUFFER
PIXEL_UNPACK_BUFFER
TRANSFORM_FEEDBACK_BUFFER
TEXTURE_BUFFER
UNIFORM_BUFFER
writeTarget
- the destination buffer object targetreadOffset
- the source buffer object offset, in byteswriteOffset
- the destination buffer object offset, in bytessize
- the number of bytes to copy
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