Class EXTMapBufferRange
- java.lang.Object
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- org.lwjgl.opengles.EXTMapBufferRange
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public class EXTMapBufferRange extends java.lang.Object
Native bindings to the EXT_map_buffer_range extension.EXT_map_buffer_range expands the buffer object API to allow greater performance when a client application only needs to write to a sub-range of a buffer object. To that end, this extension introduces two new buffer object features: non-serialized buffer modification and explicit sub-range flushing for mapped buffer objects.
OpenGL requires that commands occur in a FIFO manner meaning that any changes to buffer objects either block until the data has been processed by the OpenGL pipeline or else create extra copies to avoid such a block. By providing a method to asynchronously modify buffer object data, an application is then able to manage the synchronization points themselves and modify ranges of data contained by a buffer object even though OpenGL might still be using other parts of it.
This extension also provides a method for explicitly flushing ranges of a mapped buffer object so OpenGL does not have to assume that the entire range may have been modified. Further, it allows the application to more precisely specify its intent with respect to reading, writing, and whether the previous contents of a mapped range of interest need be preserved prior to modification.
Requires
GLES 2.0
andOES_mapbuffer
.
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Field Summary
Fields Modifier and Type Field and Description static int
GL_MAP_FLUSH_EXPLICIT_BIT_EXT
GL_MAP_INVALIDATE_BUFFER_BIT_EXT
GL_MAP_INVALIDATE_RANGE_BIT_EXT
GL_MAP_READ_BIT_EXT
GL_MAP_UNSYNCHRONIZED_BIT_EXT
GL_MAP_WRITE_BIT_EXTAccepted by theaccess
parameter of MapBufferRangeEXT.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method and Description static void
glFlushMappedBufferRangeEXT(int target, long offset, long length)
static java.nio.ByteBuffer
glMapBufferRangeEXT(int target, long offset, long length, int access)
static java.nio.ByteBuffer
glMapBufferRangeEXT(int target, long offset, long length, int access, java.nio.ByteBuffer old_buffer)
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Field Detail
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GL_MAP_READ_BIT_EXT
public static final int GL_MAP_READ_BIT_EXT
Accepted by theaccess
parameter of MapBufferRangeEXT.- See Also:
- Constant Field Values
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GL_MAP_WRITE_BIT_EXT
public static final int GL_MAP_WRITE_BIT_EXT
Accepted by theaccess
parameter of MapBufferRangeEXT.- See Also:
- Constant Field Values
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GL_MAP_INVALIDATE_RANGE_BIT_EXT
public static final int GL_MAP_INVALIDATE_RANGE_BIT_EXT
Accepted by theaccess
parameter of MapBufferRangeEXT.- See Also:
- Constant Field Values
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GL_MAP_INVALIDATE_BUFFER_BIT_EXT
public static final int GL_MAP_INVALIDATE_BUFFER_BIT_EXT
Accepted by theaccess
parameter of MapBufferRangeEXT.- See Also:
- Constant Field Values
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GL_MAP_FLUSH_EXPLICIT_BIT_EXT
public static final int GL_MAP_FLUSH_EXPLICIT_BIT_EXT
Accepted by theaccess
parameter of MapBufferRangeEXT.- See Also:
- Constant Field Values
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GL_MAP_UNSYNCHRONIZED_BIT_EXT
public static final int GL_MAP_UNSYNCHRONIZED_BIT_EXT
Accepted by theaccess
parameter of MapBufferRangeEXT.- See Also:
- Constant Field Values
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Method Detail
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glMapBufferRangeEXT
public static java.nio.ByteBuffer glMapBufferRangeEXT(int target, long offset, long length, int access)
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glMapBufferRangeEXT
public static java.nio.ByteBuffer glMapBufferRangeEXT(int target, long offset, long length, int access, java.nio.ByteBuffer old_buffer)
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glFlushMappedBufferRangeEXT
public static void glFlushMappedBufferRangeEXT(int target, long offset, long length)
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