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Diffstat (limited to 'src/jogl/classes/com/sun/opengl/util/BufferUtil.java.javase')
| -rwxr-xr-x | src/jogl/classes/com/sun/opengl/util/BufferUtil.java.javase | 499 |
1 files changed, 499 insertions, 0 deletions
diff --git a/src/jogl/classes/com/sun/opengl/util/BufferUtil.java.javase b/src/jogl/classes/com/sun/opengl/util/BufferUtil.java.javase new file mode 100755 index 000000000..d02f3d15f --- /dev/null +++ b/src/jogl/classes/com/sun/opengl/util/BufferUtil.java.javase @@ -0,0 +1,499 @@ +/* + * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * - Redistribution of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistribution in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * Neither the name of Sun Microsystems, Inc. or the names of + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * This software is provided "AS IS," without a warranty of any kind. ALL + * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, + * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN + * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR + * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR + * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR + * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR + * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE + * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, + * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF + * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. + * + * You acknowledge that this software is not designed or intended for use + * in the design, construction, operation or maintenance of any nuclear + * facility. + * + * Sun gratefully acknowledges that this software was originally authored + * and developed by Kenneth Bradley Russell and Christopher John Kline. + */ + +package com.sun.opengl.util; + +import javax.media.opengl.GL; +import javax.media.opengl.GL2; +import javax.media.opengl.GL2ES2; +import javax.media.opengl.GLException; +import javax.media.opengl.GLProfile; + +import java.nio.*; +import java.util.*; + +import java.lang.reflect.*; + +/** Utility routines for dealing with direct buffers. */ + +public class BufferUtil { + public static final int SIZEOF_BYTE = 1; + public static final int SIZEOF_SHORT = 2; + public static final int SIZEOF_INT = 4; + public static final int SIZEOF_FLOAT = 4; + public static final int SIZEOF_LONG = 8; + public static final int SIZEOF_DOUBLE = 8; + + public static final int sizeOfGLType(int glType) { + switch (glType) { + case GL.GL_UNSIGNED_BYTE: + return SIZEOF_BYTE; + case GL.GL_BYTE: + return SIZEOF_BYTE; + case GL.GL_UNSIGNED_SHORT: + return SIZEOF_SHORT; + case GL.GL_SHORT: + return SIZEOF_SHORT; + case GL.GL_FLOAT: + return SIZEOF_FLOAT; + case GL.GL_FIXED: + return SIZEOF_INT; + case GL2ES2.GL_INT: + return SIZEOF_INT; + case GL2ES2.GL_UNSIGNED_INT: + return SIZEOF_INT; + case GL2.GL_DOUBLE: + return SIZEOF_DOUBLE; + } + return -1; + } + + public static final int sizeOfBufferElem(Buffer buffer) { + if (buffer == null) { + return 0; + } + if (buffer instanceof ByteBuffer) { + return BufferUtil.SIZEOF_BYTE; + } else if (buffer instanceof IntBuffer) { + return BufferUtil.SIZEOF_INT; + } else if (buffer instanceof ShortBuffer) { + return BufferUtil.SIZEOF_SHORT; + } else if (buffer instanceof FloatBuffer) { + return BufferUtil.SIZEOF_FLOAT; + } else if (buffer instanceof DoubleBuffer) { + return BufferUtil.SIZEOF_DOUBLE; + } + throw new RuntimeException("Unexpected buffer type " + + buffer.getClass().getName()); + } + + private BufferUtil() {} + + //---------------------------------------------------------------------- + // Allocation routines + // + + public static final Buffer newGLBuffer(int glType, int numElements) { + switch (glType) { + case GL.GL_UNSIGNED_BYTE: + case GL.GL_BYTE: + return newByteBuffer(numElements); + case GL.GL_UNSIGNED_SHORT: + case GL.GL_SHORT: + return newShortBuffer(numElements); + case GL.GL_FLOAT: + return newFloatBuffer(numElements); + case GL.GL_FIXED: + case GL2ES2.GL_INT: + case GL2ES2.GL_UNSIGNED_INT: + return newIntBuffer(numElements); + case GL2.GL_DOUBLE: + return newDoubleBuffer(numElements); + } + return null; + } + + public static final Buffer sliceGLBuffer(ByteBuffer parent, int bytePos, int byteLen, int glType) { + if(parent==null || byteLen==0) return null; + parent.position(bytePos); + parent.limit(bytePos + byteLen); + + switch (glType) { + case GL.GL_UNSIGNED_BYTE: + case GL.GL_BYTE: + return parent.slice(); + case GL.GL_UNSIGNED_SHORT: + case GL.GL_SHORT: + return parent.asShortBuffer(); + case GL.GL_FLOAT: + return parent.asFloatBuffer(); + case GL.GL_FIXED: + case GL2ES2.GL_INT: + case GL2ES2.GL_UNSIGNED_INT: + return parent.asIntBuffer(); + case GL2.GL_DOUBLE: + return parent.asDoubleBuffer(); + } + return null; + } + + /** Allocates a new direct ByteBuffer with the specified number of + elements. The returned buffer will have its byte order set to + the host platform's native byte order. */ + public static ByteBuffer newByteBuffer(int numElements) { + ByteBuffer bb = ByteBuffer.allocateDirect(numElements); + nativeOrder(bb); + return bb; + } + + public static ByteBuffer newByteBuffer(byte[] values, int offset, int len) { + ByteBuffer bb = newByteBuffer(len); + bb.put(values, offset, len); + bb.rewind(); + return bb; + } + + public static ByteBuffer newByteBuffer(byte[] values, int offset) { + return newByteBuffer(values, offset, values.length-offset); + } + + public static ByteBuffer newByteBuffer(byte[] values) { + return newByteBuffer(values, 0); + } + + + /** Allocates a new direct DoubleBuffer with the specified number of + elements. The returned buffer will have its byte order set to + the host platform's native byte order. */ + public static DoubleBuffer newDoubleBuffer(int numElements) { + ByteBuffer bb = newByteBuffer(numElements * SIZEOF_DOUBLE); + return bb.asDoubleBuffer(); + } + + public static DoubleBuffer newDoubleBuffer(double[] values, int offset) { + int len = values.length-offset; + DoubleBuffer bb = newDoubleBuffer(len); + bb.put(values, offset, len); + bb.rewind(); + return bb; + } + + public static DoubleBuffer newDoubleBuffer(double[] values) { + return newDoubleBuffer(values, 0); + } + + + /** Allocates a new direct FloatBuffer with the specified number of + elements. The returned buffer will have its byte order set to + the host platform's native byte order. */ + public static FloatBuffer newFloatBuffer(int numElements) { + ByteBuffer bb = newByteBuffer(numElements * SIZEOF_FLOAT); + return bb.asFloatBuffer(); + } + + public static FloatBuffer newFloatBuffer(float[] values, int offset, int len) { + FloatBuffer bb = newFloatBuffer(len); + bb.put(values, offset, len); + bb.rewind(); + return bb; + } + + public static FloatBuffer newFloatBuffer(float[] values, int offset) { + return newFloatBuffer(values, 0, values.length-offset); + } + + public static FloatBuffer newFloatBuffer(float[] values) { + return newFloatBuffer(values, 0); + } + + + /** Allocates a new direct IntBuffer with the specified number of + elements. The returned buffer will have its byte order set to + the host platform's native byte order. */ + public static IntBuffer newIntBuffer(int numElements) { + ByteBuffer bb = newByteBuffer(numElements * SIZEOF_INT); + return bb.asIntBuffer(); + } + + public static IntBuffer newIntBuffer(int[] values, int offset, int len) { + IntBuffer bb = newIntBuffer(len); + bb.put(values, offset, len); + bb.rewind(); + return bb; + } + + public static IntBuffer newIntBuffer(int[] values, int offset) { + return newIntBuffer(values, 0, values.length-offset); + } + + public static IntBuffer newIntBuffer(int[] values) { + return newIntBuffer(values, 0); + } + + /** Allocates a new direct LongBuffer with the specified number of + elements. The returned buffer will have its byte order set to + the host platform's native byte order. */ + public static LongBuffer newLongBuffer(int numElements) { + ByteBuffer bb = newByteBuffer(numElements * SIZEOF_LONG); + return bb.asLongBuffer(); + } + + /** Allocates a new direct ShortBuffer with the specified number of + elements. The returned buffer will have its byte order set to + the host platform's native byte order. */ + public static ShortBuffer newShortBuffer(int numElements) { + ByteBuffer bb = newByteBuffer(numElements * SIZEOF_SHORT); + return bb.asShortBuffer(); + } + + public static ShortBuffer newShortBuffer(short[] values, int offset, int len) { + ShortBuffer bb = newShortBuffer(len); + bb.put(values, offset, len); + bb.rewind(); + return bb; + } + + public static ShortBuffer newShortBuffer(short[] values, int offset) { + return newShortBuffer(values, 0, values.length-offset); + } + + public static ShortBuffer newShortBuffer(short[] values) { + return newShortBuffer(values, 0); + } + + //---------------------------------------------------------------------- + // Copy routines (type-to-type) + // + + /** Copies the <i>remaining</i> elements (as defined by + <code>limit() - position()</code>) in the passed ByteBuffer into + a newly-allocated direct ByteBuffer. The returned buffer will + have its byte order set to the host platform's native byte + order. The position of the newly-allocated buffer will be zero, + and the position of the passed buffer is unchanged (though its + mark is changed). */ + public static ByteBuffer copyByteBuffer(ByteBuffer orig) { + ByteBuffer dest = newByteBuffer(orig.remaining()); + dest.put(orig); + dest.rewind(); + return dest; + } + + /** Copies the <i>remaining</i> elements (as defined by + <code>limit() - position()</code>) in the passed FloatBuffer + into a newly-allocated direct FloatBuffer. The returned buffer + will have its byte order set to the host platform's native byte + order. The position of the newly-allocated buffer will be zero, + and the position of the passed buffer is unchanged (though its + mark is changed). */ + public static FloatBuffer copyFloatBuffer(FloatBuffer orig) { + return copyFloatBufferAsByteBuffer(orig).asFloatBuffer(); + } + + /** Copies the <i>remaining</i> elements (as defined by + <code>limit() - position()</code>) in the passed IntBuffer + into a newly-allocated direct IntBuffer. The returned buffer + will have its byte order set to the host platform's native byte + order. The position of the newly-allocated buffer will be zero, + and the position of the passed buffer is unchanged (though its + mark is changed). */ + public static IntBuffer copyIntBuffer(IntBuffer orig) { + return copyIntBufferAsByteBuffer(orig).asIntBuffer(); + } + + /** Copies the <i>remaining</i> elements (as defined by + <code>limit() - position()</code>) in the passed ShortBuffer + into a newly-allocated direct ShortBuffer. The returned buffer + will have its byte order set to the host platform's native byte + order. The position of the newly-allocated buffer will be zero, + and the position of the passed buffer is unchanged (though its + mark is changed). */ + public static ShortBuffer copyShortBuffer(ShortBuffer orig) { + return copyShortBufferAsByteBuffer(orig).asShortBuffer(); + } + + //---------------------------------------------------------------------- + // Copy routines (type-to-ByteBuffer) + // + + /** Copies the <i>remaining</i> elements (as defined by + <code>limit() - position()</code>) in the passed FloatBuffer + into a newly-allocated direct ByteBuffer. The returned buffer + will have its byte order set to the host platform's native byte + order. The position of the newly-allocated buffer will be zero, + and the position of the passed buffer is unchanged (though its + mark is changed). */ + public static ByteBuffer copyFloatBufferAsByteBuffer(FloatBuffer orig) { + ByteBuffer dest = newByteBuffer(orig.remaining() * SIZEOF_FLOAT); + dest.asFloatBuffer().put(orig); + dest.rewind(); + return dest; + } + + /** Copies the <i>remaining</i> elements (as defined by + <code>limit() - position()</code>) in the passed IntBuffer into + a newly-allocated direct ByteBuffer. The returned buffer will + have its byte order set to the host platform's native byte + order. The position of the newly-allocated buffer will be zero, + and the position of the passed buffer is unchanged (though its + mark is changed). */ + public static ByteBuffer copyIntBufferAsByteBuffer(IntBuffer orig) { + ByteBuffer dest = newByteBuffer(orig.remaining() * SIZEOF_INT); + dest.asIntBuffer().put(orig); + dest.rewind(); + return dest; + } + + /** Copies the <i>remaining</i> elements (as defined by + <code>limit() - position()</code>) in the passed ShortBuffer + into a newly-allocated direct ByteBuffer. The returned buffer + will have its byte order set to the host platform's native byte + order. The position of the newly-allocated buffer will be zero, + and the position of the passed buffer is unchanged (though its + mark is changed). */ + public static ByteBuffer copyShortBufferAsByteBuffer(ShortBuffer orig) { + ByteBuffer dest = newByteBuffer(orig.remaining() * SIZEOF_SHORT); + dest.asShortBuffer().put(orig); + dest.rewind(); + return dest; + } + + //---------------------------------------------------------------------- + // Conversion routines + // + + public final static float[] getFloatArray(double[] source) { + int i=source.length; + float[] dest = new float[i--]; + while(i>=0) { dest[i]=(float)source[i]; i--; } + return dest; + } + + public final static FloatBuffer getFloatBuffer(DoubleBuffer source) { + source.rewind(); + FloatBuffer dest = BufferUtil.newFloatBuffer(source.limit()); + while(source.hasRemaining()) { dest.put((float)source.get()); } + return dest; + } + + public static ByteBuffer nativeOrder(ByteBuffer buf) { + if (!isCDCFP) { + try { + if (byteOrderClass == null) { + byteOrderClass = Class.forName("java.nio.ByteOrder"); + orderMethod = ByteBuffer.class.getMethod("order", new Class[] { byteOrderClass }); + Method nativeOrderMethod = byteOrderClass.getMethod("nativeOrder", null); + nativeOrderObject = nativeOrderMethod.invoke(null, null); + } + } catch (Throwable t) { + // Must be running on CDC / FP + isCDCFP = true; + } + + if (!isCDCFP) { + try { + orderMethod.invoke(buf, new Object[] { nativeOrderObject }); + } catch (Throwable t) { + } + } + } + return buf; + } + + //---------------------------------------------------------------------- + // Convenient GL put methods with generic target Buffer + // + public static void put(Buffer dest, Buffer v) { + if((dest instanceof ByteBuffer) && (v instanceof ByteBuffer)) { + ((ByteBuffer)dest).put((ByteBuffer)v); + } else if((dest instanceof ShortBuffer) && (v instanceof ShortBuffer)) { + ((ShortBuffer)dest).put((ShortBuffer)v); + } else if((dest instanceof IntBuffer) && (v instanceof IntBuffer)) { + ((IntBuffer)dest).put((IntBuffer)v); + } else if((dest instanceof FloatBuffer) && (v instanceof FloatBuffer)) { + ((FloatBuffer)dest).put((FloatBuffer)v); + } else { + throw new GLException("Incompatible Buffer classes: dest = "+dest.getClass().getName() + ", src = " + v.getClass().getName()); + } + } + + public static void putb(Buffer dest, byte v) { + if(dest instanceof ByteBuffer) { + ((ByteBuffer)dest).put(v); + } else if(dest instanceof ShortBuffer) { + ((ShortBuffer)dest).put((short)v); + } else if(dest instanceof IntBuffer) { + ((IntBuffer)dest).put((int)v); + } else { + throw new GLException("Byte doesn't match Buffer Class: "+dest); + } + } + + public static void puts(Buffer dest, short v) { + if(dest instanceof ShortBuffer) { + ((ShortBuffer)dest).put(v); + } else if(dest instanceof IntBuffer) { + ((IntBuffer)dest).put((int)v); + } else { + throw new GLException("Short doesn't match Buffer Class: "+dest); + } + } + + public static void puti(Buffer dest, int v) { + if(dest instanceof IntBuffer) { + ((IntBuffer)dest).put(v); + } else { + throw new GLException("Integer doesn't match Buffer Class: "+dest); + } + } + + public static void putx(Buffer dest, int v) { + puti(dest, v); + } + + public static void putf(Buffer dest, float v) { + if(dest instanceof FloatBuffer) { + ((FloatBuffer)dest).put(v); + } else if(dest instanceof IntBuffer) { + ((IntBuffer)dest).put(FixedPoint.toFixed(v)); + } else { + throw new GLException("Float doesn't match Buffer Class: "+dest); + } + } + + public static void putd(Buffer dest, double v) { + if(dest instanceof FloatBuffer) { + ((FloatBuffer)dest).put((float)v); + } else { + throw new GLException("Double doesn't match Buffer Class: "+dest); + } + } + + //---------------------------------------------------------------------- + // Internals only below this point + // + + // NOTE that this work must be done reflectively at the present time + // because this code must compile and run correctly on both CDC/FP and J2SE + private static boolean isCDCFP; + private static Class byteOrderClass; + private static Object nativeOrderObject; + private static Method orderMethod; + +} |