EXT_map_buffer_range.java

/*
 * Copyright (c) 2002-2012 LWJGL Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
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 * * Redistributions in binary form must reproduce the above copyright
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 *   its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package org.lwjgl.opengles;

import org.lwjgl.util.generator.AutoSize;
import org.lwjgl.util.generator.CachedResult;
import org.lwjgl.util.generator.opengl.*;

import java.nio.ByteBuffer;

public interface EXT_map_buffer_range {

	/** Accepted by the <access> parameter of MapBufferRangeEXT: */
	int GL_MAP_READ_BIT_EXT              = 0x0001,
		GL_MAP_WRITE_BIT_EXT             = 0x0002,
		GL_MAP_INVALIDATE_RANGE_BIT_EXT  = 0x0004,
		GL_MAP_INVALIDATE_BUFFER_BIT_EXT = 0x0008,
		GL_MAP_FLUSH_EXPLICIT_BIT_EXT    = 0x0010,
		GL_MAP_UNSYNCHRONIZED_BIT_EXT    = 0x0020;

	/**
	 * glMapBufferRange maps a GL buffer object range to a ByteBuffer. The old_buffer argument can be null,
	 * in which case a new ByteBuffer will be created, pointing to the returned memory. If old_buffer is non-null,
	 * it will be returned if it points to the same mapped memory and has the same capacity as the buffer object,
	 * otherwise a new ByteBuffer is created. That way, an application will normally use glMapBufferRange like this:
	 * <p/>
	 * ByteBuffer mapped_buffer; mapped_buffer = glMapBufferRange(..., ..., ..., ..., null); ... // Another map on the same buffer mapped_buffer = glMapBufferRange(..., ..., ..., ..., mapped_buffer);
	 * <p/>
	 * Only ByteBuffers returned from this method are to be passed as the old_buffer argument. User-created ByteBuffers cannot be reused.
	 *
	 * @param old_buffer A ByteBuffer. If this argument points to the same address and has the same capacity as the new mapping, it will be returned and no new buffer will be created.
	 *
	 * @return A ByteBuffer representing the mapped buffer memory.
	 */
	@CachedResult(isRange = true)
	@GLvoid
	@AutoSize("length")
	ByteBuffer glMapBufferRangeEXT(@GLenum int target, @GLintptr long offset, @GLsizeiptr long length, @GLbitfield int access);

	void glFlushMappedBufferRangeEXT(@GLenum int target, @GLintptr long offset, @GLsizeiptr long length);

}