/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.badlogic.gdx.utils;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.CharBuffer;
import java.nio.DoubleBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.LongBuffer;
import java.nio.ShortBuffer;
import com.badlogic.gdx.math.Matrix3;
import com.badlogic.gdx.math.Matrix4;
/** Class with static helper methods to increase the speed of array/direct buffer and direct buffer/direct buffer transfers
*
* @author mzechner, xoppa */
public final class BufferUtils {
static Array<ByteBuffer> unsafeBuffers = new Array<ByteBuffer>();
static int allocatedUnsafe = 0;
/** Copies numFloats floats from src starting at offset to dst. Dst is assumed to be a direct {@link Buffer}. The method will
* crash if that is not the case. The position and limit of the buffer are ignored, the copy is placed at position 0 in the
* buffer. After the copying process the position of the buffer is set to 0 and its limit is set to numFloats * 4 if it is a
* ByteBuffer and numFloats if it is a FloatBuffer. In case the Buffer is neither a ByteBuffer nor a FloatBuffer the limit is
* not set. This is an expert method, use at your own risk.
*
* @param src the source array
* @param dst the destination buffer, has to be a direct Buffer
* @param numFloats the number of floats to copy
* @param offset the offset in src to start copying from */
public static void copy (float[] src, Buffer dst, int numFloats, int offset) {
if (dst instanceof ByteBuffer)
dst.limit(numFloats << 2);
else if (dst instanceof FloatBuffer) dst.limit(numFloats);
copyJni(src, dst, numFloats, offset);
dst.position(0);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position will stay the same, the limit
* will be set to position + numElements. <b>The Buffer must be a direct Buffer with native byte order. No error checking is
* performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param dst the destination Buffer, its position is used as an offset.
* @param numElements the number of elements to copy. */
public static void copy (byte[] src, int srcOffset, Buffer dst, int numElements) {
dst.limit(dst.position() + bytesToElements(dst, numElements));
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position will stay the same, the limit
* will be set to position + numElements. <b>The Buffer must be a direct Buffer with native byte order. No error checking is
* performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param dst the destination Buffer, its position is used as an offset.
* @param numElements the number of elements to copy. */
public static void copy (short[] src, int srcOffset, Buffer dst, int numElements) {
dst.limit(dst.position() + bytesToElements(dst, numElements << 1));
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 1);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position and limit will stay the same.
* <b>The Buffer must be a direct Buffer with native byte order. No error checking is performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param numElements the number of elements to copy.
* @param dst the destination Buffer, its position is used as an offset. */
public static void copy (char[] src, int srcOffset, int numElements, Buffer dst) {
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 1);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position and limit will stay the same.
* <b>The Buffer must be a direct Buffer with native byte order. No error checking is performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param numElements the number of elements to copy.
* @param dst the destination Buffer, its position is used as an offset. */
public static void copy (int[] src, int srcOffset, int numElements, Buffer dst) {
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 2);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position and limit will stay the same.
* <b>The Buffer must be a direct Buffer with native byte order. No error checking is performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param numElements the number of elements to copy.
* @param dst the destination Buffer, its position is used as an offset. */
public static void copy (long[] src, int srcOffset, int numElements, Buffer dst) {
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 3);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position and limit will stay the same.
* <b>The Buffer must be a direct Buffer with native byte order. No error checking is performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param numElements the number of elements to copy.
* @param dst the destination Buffer, its position is used as an offset. */
public static void copy (float[] src, int srcOffset, int numElements, Buffer dst) {
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 2);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position and limit will stay the same.
* <b>The Buffer must be a direct Buffer with native byte order. No error checking is performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param numElements the number of elements to copy.
* @param dst the destination Buffer, its position is used as an offset. */
public static void copy (double[] src, int srcOffset, int numElements, Buffer dst) {
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 3);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position will stay the same, the limit
* will be set to position + numElements. <b>The Buffer must be a direct Buffer with native byte order. No error checking is
* performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param dst the destination Buffer, its position is used as an offset.
* @param numElements the number of elements to copy. */
public static void copy (char[] src, int srcOffset, Buffer dst, int numElements) {
dst.limit(dst.position() + bytesToElements(dst, numElements << 1));
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 1);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position will stay the same, the limit
* will be set to position + numElements. <b>The Buffer must be a direct Buffer with native byte order. No error checking is
* performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param dst the destination Buffer, its position is used as an offset.
* @param numElements the number of elements to copy. */
public static void copy (int[] src, int srcOffset, Buffer dst, int numElements) {
dst.limit(dst.position() + bytesToElements(dst, numElements << 2));
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 2);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position will stay the same, the limit
* will be set to position + numElements. <b>The Buffer must be a direct Buffer with native byte order. No error checking is
* performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param dst the destination Buffer, its position is used as an offset.
* @param numElements the number of elements to copy. */
public static void copy (long[] src, int srcOffset, Buffer dst, int numElements) {
dst.limit(dst.position() + bytesToElements(dst, numElements << 3));
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 3);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position will stay the same, the limit
* will be set to position + numElements. <b>The Buffer must be a direct Buffer with native byte order. No error checking is
* performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param dst the destination Buffer, its position is used as an offset.
* @param numElements the number of elements to copy. */
public static void copy (float[] src, int srcOffset, Buffer dst, int numElements) {
dst.limit(dst.position() + bytesToElements(dst, numElements << 2));
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 2);
}
/** Copies the contents of src to dst, starting from src[srcOffset], copying numElements elements. The {@link Buffer} instance's
* {@link Buffer#position()} is used to define the offset into the Buffer itself. The position will stay the same, the limit
* will be set to position + numElements. <b>The Buffer must be a direct Buffer with native byte order. No error checking is
* performed</b>.
*
* @param src the source array.
* @param srcOffset the offset into the source array.
* @param dst the destination Buffer, its position is used as an offset.
* @param numElements the number of elements to copy. */
public static void copy (double[] src, int srcOffset, Buffer dst, int numElements) {
dst.limit(dst.position() + bytesToElements(dst, numElements << 3));
copyJni(src, srcOffset, dst, positionInBytes(dst), numElements << 3);
}
/** Copies the contents of src to dst, starting from the current position of src, copying numElements elements (using the data
* type of src, no matter the datatype of dst). The dst {@link Buffer#position()} is used as the writing offset. The position
* of both Buffers will stay the same. The limit of the src Buffer will stay the same. The limit of the dst Buffer will be set
* to dst.position() + numElements, where numElements are translated to the number of elements appropriate for the dst Buffer
* data type. <b>The Buffers must be direct Buffers with native byte order. No error checking is performed</b>.
*
* @param src the source Buffer.
* @param dst the destination Buffer.
* @param numElements the number of elements to copy. */
public static void copy (Buffer src, Buffer dst, int numElements) {
int numBytes = elementsToBytes(src, numElements);
dst.limit(dst.position() + bytesToElements(dst, numBytes));
copyJni(src, positionInBytes(src), dst, positionInBytes(dst), numBytes);
}
/** Multiply float vector components within the buffer with the specified matrix. The {@link Buffer#position()} is used as the
* offset.
* @param data The buffer to transform.
* @param dimensions The number of components of the vector (2 for xy, 3 for xyz or 4 for xyzw)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with */
public static void transform (Buffer data, int dimensions, int strideInBytes, int count, Matrix4 matrix) {
transform(data, dimensions, strideInBytes, count, matrix, 0);
}
/** Multiply float vector components within the buffer with the specified matrix. The {@link Buffer#position()} is used as the
* offset.
* @param data The buffer to transform.
* @param dimensions The number of components of the vector (2 for xy, 3 for xyz or 4 for xyzw)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with */
public static void transform (float[] data, int dimensions, int strideInBytes, int count, Matrix4 matrix) {
transform(data, dimensions, strideInBytes, count, matrix, 0);
}
/** Multiply float vector components within the buffer with the specified matrix. The specified offset value is added to the
* {@link Buffer#position()} and used as the offset.
* @param data The buffer to transform.
* @param dimensions The number of components of the vector (2 for xy, 3 for xyz or 4 for xyzw)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with
* @param offset The offset within the buffer (in bytes relative to the current position) to the vector */
public static void transform (Buffer data, int dimensions, int strideInBytes, int count, Matrix4 matrix, int offset) {
switch (dimensions) {
case 4:
transformV4M4Jni(data, strideInBytes, count, matrix.val, positionInBytes(data) + offset);
break;
case 3:
transformV3M4Jni(data, strideInBytes, count, matrix.val, positionInBytes(data) + offset);
break;
case 2:
transformV2M4Jni(data, strideInBytes, count, matrix.val, positionInBytes(data) + offset);
break;
default:
throw new IllegalArgumentException();
}
}
/** Multiply float vector components within the buffer with the specified matrix. The specified offset value is added to the
* {@link Buffer#position()} and used as the offset.
* @param data The buffer to transform.
* @param dimensions The number of components of the vector (2 for xy, 3 for xyz or 4 for xyzw)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with
* @param offset The offset within the buffer (in bytes relative to the current position) to the vector */
public static void transform (float[] data, int dimensions, int strideInBytes, int count, Matrix4 matrix, int offset) {
switch (dimensions) {
case 4:
transformV4M4Jni(data, strideInBytes, count, matrix.val, offset);
break;
case 3:
transformV3M4Jni(data, strideInBytes, count, matrix.val, offset);
break;
case 2:
transformV2M4Jni(data, strideInBytes, count, matrix.val, offset);
break;
default:
throw new IllegalArgumentException();
}
}
/** Multiply float vector components within the buffer with the specified matrix. The {@link Buffer#position()} is used as the
* offset.
* @param data The buffer to transform.
* @param dimensions The number of components (x, y, z) of the vector (2 for xy or 3 for xyz)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with */
public static void transform (Buffer data, int dimensions, int strideInBytes, int count, Matrix3 matrix) {
transform(data, dimensions, strideInBytes, count, matrix, 0);
}
/** Multiply float vector components within the buffer with the specified matrix. The {@link Buffer#position()} is used as the
* offset.
* @param data The buffer to transform.
* @param dimensions The number of components (x, y, z) of the vector (2 for xy or 3 for xyz)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with */
public static void transform (float[] data, int dimensions, int strideInBytes, int count, Matrix3 matrix) {
transform(data, dimensions, strideInBytes, count, matrix, 0);
}
/** Multiply float vector components within the buffer with the specified matrix. The specified offset value is added to the
* {@link Buffer#position()} and used as the offset.
* @param data The buffer to transform.
* @param dimensions The number of components (x, y, z) of the vector (2 for xy or 3 for xyz)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with,
* @param offset The offset within the buffer (in bytes relative to the current position) to the vector */
public static void transform (Buffer data, int dimensions, int strideInBytes, int count, Matrix3 matrix, int offset) {
switch (dimensions) {
case 3:
transformV3M3Jni(data, strideInBytes, count, matrix.val, positionInBytes(data) + offset);
break;
case 2:
transformV2M3Jni(data, strideInBytes, count, matrix.val, positionInBytes(data) + offset);
break;
default:
throw new IllegalArgumentException();
}
}
/** Multiply float vector components within the buffer with the specified matrix. The specified offset value is added to the
* {@link Buffer#position()} and used as the offset.
* @param data The buffer to transform.
* @param dimensions The number of components (x, y, z) of the vector (2 for xy or 3 for xyz)
* @param strideInBytes The offset between the first and the second vector to transform
* @param count The number of vectors to transform
* @param matrix The matrix to multiply the vector with,
* @param offset The offset within the buffer (in bytes relative to the current position) to the vector */
public static void transform (float[] data, int dimensions, int strideInBytes, int count, Matrix3 matrix, int offset) {
switch (dimensions) {
case 3:
transformV3M3Jni(data, strideInBytes, count, matrix.val, offset);
break;
case 2:
transformV2M3Jni(data, strideInBytes, count, matrix.val, offset);
break;
default:
throw new IllegalArgumentException();
}
}
public static long findFloats (Buffer vertex, int strideInBytes, Buffer vertices, int numVertices) {
return find(vertex, positionInBytes(vertex), strideInBytes, vertices, positionInBytes(vertices), numVertices);
}
public static long findFloats (float[] vertex, int strideInBytes, Buffer vertices, int numVertices) {
return find(vertex, 0, strideInBytes, vertices, positionInBytes(vertices), numVertices);
}
public static long findFloats (Buffer vertex, int strideInBytes, float[] vertices, int numVertices) {
return find(vertex, positionInBytes(vertex), strideInBytes, vertices, 0, numVertices);
}
public static long findFloats (float[] vertex, int strideInBytes, float[] vertices, int numVertices) {
return find(vertex, 0, strideInBytes, vertices, 0, numVertices);
}
public static long findFloats (Buffer vertex, int strideInBytes, Buffer vertices, int numVertices, float epsilon) {
return find(vertex, positionInBytes(vertex), strideInBytes, vertices, positionInBytes(vertices), numVertices, epsilon);
}
public static long findFloats (float[] vertex, int strideInBytes, Buffer vertices, int numVertices, float epsilon) {
return find(vertex, 0, strideInBytes, vertices, positionInBytes(vertices), numVertices, epsilon);
}
public static long findFloats (Buffer vertex, int strideInBytes, float[] vertices, int numVertices, float epsilon) {
return find(vertex, positionInBytes(vertex), strideInBytes, vertices, 0, numVertices, epsilon);
}
public static long findFloats (float[] vertex, int strideInBytes, float[] vertices, int numVertices, float epsilon) {
return find(vertex, 0, strideInBytes, vertices, 0, numVertices, epsilon);
}
private static int positionInBytes (Buffer dst) {
if (dst instanceof ByteBuffer)
return dst.position();
else if (dst instanceof ShortBuffer)
return dst.position() << 1;
else if (dst instanceof CharBuffer)
return dst.position() << 1;
else if (dst instanceof IntBuffer)
return dst.position() << 2;
else if (dst instanceof LongBuffer)
return dst.position() << 3;
else if (dst instanceof FloatBuffer)
return dst.position() << 2;
else if (dst instanceof DoubleBuffer)
return dst.position() << 3;
else
throw new GdxRuntimeException("Can't copy to a " + dst.getClass().getName() + " instance");
}
private static int bytesToElements (Buffer dst, int bytes) {
if (dst instanceof ByteBuffer)
return bytes;
else if (dst instanceof ShortBuffer)
return bytes >>> 1;
else if (dst instanceof CharBuffer)
return bytes >>> 1;
else if (dst instanceof IntBuffer)
return bytes >>> 2;
else if (dst instanceof LongBuffer)
return bytes >>> 3;
else if (dst instanceof FloatBuffer)
return bytes >>> 2;
else if (dst instanceof DoubleBuffer)
return bytes >>> 3;
else
throw new GdxRuntimeException("Can't copy to a " + dst.getClass().getName() + " instance");
}
private static int elementsToBytes (Buffer dst, int elements) {
if (dst instanceof ByteBuffer)
return elements;
else if (dst instanceof ShortBuffer)
return elements << 1;
else if (dst instanceof CharBuffer)
return elements << 1;
else if (dst instanceof IntBuffer)
return elements << 2;
else if (dst instanceof LongBuffer)
return elements << 3;
else if (dst instanceof FloatBuffer)
return elements << 2;
else if (dst instanceof DoubleBuffer)
return elements << 3;
else
throw new GdxRuntimeException("Can't copy to a " + dst.getClass().getName() + " instance");
}
public static FloatBuffer newFloatBuffer (int numFloats) {
ByteBuffer buffer = ByteBuffer.allocateDirect(numFloats * 4);
buffer.order(ByteOrder.nativeOrder());
return buffer.asFloatBuffer();
}
public static DoubleBuffer newDoubleBuffer (int numDoubles) {
ByteBuffer buffer = ByteBuffer.allocateDirect(numDoubles * 8);
buffer.order(ByteOrder.nativeOrder());
return buffer.asDoubleBuffer();
}
public static ByteBuffer newByteBuffer (int numBytes) {
ByteBuffer buffer = ByteBuffer.allocateDirect(numBytes);
buffer.order(ByteOrder.nativeOrder());
return buffer;
}
public static ShortBuffer newShortBuffer (int numShorts) {
ByteBuffer buffer = ByteBuffer.allocateDirect(numShorts * 2);
buffer.order(ByteOrder.nativeOrder());
return buffer.asShortBuffer();
}
public static CharBuffer newCharBuffer (int numChars) {
ByteBuffer buffer = ByteBuffer.allocateDirect(numChars * 2);
buffer.order(ByteOrder.nativeOrder());
return buffer.asCharBuffer();
}
public static IntBuffer newIntBuffer (int numInts) {
ByteBuffer buffer = ByteBuffer.allocateDirect(numInts * 4);
buffer.order(ByteOrder.nativeOrder());
return buffer.asIntBuffer();
}
public static LongBuffer newLongBuffer (int numLongs) {
ByteBuffer buffer = ByteBuffer.allocateDirect(numLongs * 8);
buffer.order(ByteOrder.nativeOrder());
return buffer.asLongBuffer();
}
// @off
/*JNI
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
*/
public static void disposeUnsafeByteBuffer(ByteBuffer buffer) {
int size = buffer.capacity();
synchronized(unsafeBuffers) {
if(!unsafeBuffers.removeValue(buffer, true))
throw new IllegalArgumentException("buffer not allocated with newUnsafeByteBuffer or already disposed");
}
allocatedUnsafe -= size;
freeMemory(buffer);
}
/** Allocates a new direct ByteBuffer from native heap memory using the native byte order. Needs to be disposed with
* {@link #freeMemory(ByteBuffer)}.
* @param numBytes */
public static ByteBuffer newUnsafeByteBuffer (int numBytes) {
ByteBuffer buffer = newDisposableByteBuffer(numBytes);
buffer.order(ByteOrder.nativeOrder());
allocatedUnsafe += numBytes;
synchronized(unsafeBuffers) {
unsafeBuffers.add(buffer);
}
return buffer;
}
/**
* Returns the address of the Buffer, it assumes it is an unsafe buffer.
* @param buffer The Buffer to ask the address for.
* @return the address of the Buffer.
*/
public static long getUnsafeBufferAddress(Buffer buffer) {
return getBufferAddress(buffer) + buffer.position();
}
/**
* Registers the given ByteBuffer as an unsafe ByteBuffer. The ByteBuffer must have been
* allocated in native code, pointing to a memory region allocated via malloc. Needs to
* be disposed with {@link #freeMemory(ByteBuffer)}.
* @param buffer the {@link ByteBuffer} to register
* @return the ByteBuffer passed to the method
*/
public static ByteBuffer newUnsafeByteBuffer(ByteBuffer buffer) {
allocatedUnsafe += buffer.capacity();
synchronized(unsafeBuffers) {
unsafeBuffers.add(buffer);
}
return buffer;
}
/**
* @return the number of bytes allocated with {@link #newUnsafeByteBuffer(int)}
*/
public static int getAllocatedBytesUnsafe() {
return allocatedUnsafe;
}
/** Frees the memory allocated for the ByteBuffer. DO NOT USE THIS ON BYTEBUFFERS ALLOCATEd VIA METHODS IN THIS CLASS OR
* ByteBuffer.allocateDirect()! IT WILL EXPLODE! */
private static native void freeMemory (ByteBuffer buffer); /*
free(buffer);
*/
private static native ByteBuffer newDisposableByteBuffer (int numBytes); /*
return env->NewDirectByteBuffer((char*)malloc(numBytes), numBytes);
*/
private static native long getBufferAddress (Buffer buffer); /*
return (jlong) buffer;
*/
/** Writes the specified number of zeros to the buffer. This is generally faster than reallocating a new buffer. */
public static native void clear (ByteBuffer buffer, int numBytes); /*
memset(buffer, 0, numBytes);
*/
private native static void copyJni (float[] src, Buffer dst, int numFloats, int offset); /*
memcpy(dst, src + offset, numFloats << 2 );
*/
private native static void copyJni (byte[] src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
private native static void copyJni (char[] src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
private native static void copyJni (short[] src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
private native static void copyJni (int[] src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
private native static void copyJni (long[] src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
private native static void copyJni (float[] src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
private native static void copyJni (double[] src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
private native static void copyJni (Buffer src, int srcOffset, Buffer dst, int dstOffset, int numBytes); /*
memcpy(dst + dstOffset, src + srcOffset, numBytes);
*/
/*JNI
template<size_t n1, size_t n2> void transform(float * const &src, float * const &m, float * const &dst) {}
template<> inline void transform<4, 4>(float * const &src, float * const &m, float * const &dst) {
const float x = src[0], y = src[1], z = src[2], w = src[3];
dst[0] = x * m[ 0] + y * m[ 4] + z * m[ 8] + w * m[12];
dst[1] = x * m[ 1] + y * m[ 5] + z * m[ 9] + w * m[13];
dst[2] = x * m[ 2] + y * m[ 6] + z * m[10] + w * m[14];
dst[3] = x * m[ 3] + y * m[ 7] + z * m[11] + w * m[15];
}
template<> inline void transform<3, 4>(float * const &src, float * const &m, float * const &dst) {
const float x = src[0], y = src[1], z = src[2];
dst[0] = x * m[ 0] + y * m[ 4] + z * m[ 8] + m[12];
dst[1] = x * m[ 1] + y * m[ 5] + z * m[ 9] + m[13];
dst[2] = x * m[ 2] + y * m[ 6] + z * m[10] + m[14];
}
template<> inline void transform<2, 4>(float * const &src, float * const &m, float * const &dst) {
const float x = src[0], y = src[1];
dst[0] = x * m[ 0] + y * m[ 4] + m[12];
dst[1] = x * m[ 1] + y * m[ 5] + m[13];
}
template<> inline void transform<3, 3>(float * const &src, float * const &m, float * const &dst) {
const float x = src[0], y = src[1], z = src[2];
dst[0] = x * m[0] + y * m[3] + z * m[6];
dst[1] = x * m[1] + y * m[4] + z * m[7];
dst[2] = x * m[2] + y * m[5] + z * m[8];
}
template<> inline void transform<2, 3>(float * const &src, float * const &m, float * const &dst) {
const float x = src[0], y = src[1];
dst[0] = x * m[0] + y * m[3] + m[6];
dst[1] = x * m[1] + y * m[4] + m[7];
}
template<size_t n1, size_t n2> void transform(float * const &v, int const &stride, int const &count, float * const &m, int offset) {
for (int i = 0; i < count; i++) {
transform<n1, n2>(&v[offset], m, &v[offset]);
offset += stride;
}
}
template<size_t n1, size_t n2> void transform(float * const &v, int const &stride, unsigned short * const &indices, int const &count, float * const &m, int offset) {
for (int i = 0; i < count; i++) {
transform<n1, n2>(&v[offset], m, &v[offset]);
offset += stride;
}
}
inline bool compare(float * const &lhs, float * const & rhs, const unsigned int &size, const float &epsilon) {
for (unsigned int i = 0; i < size; i++)
if ((*(unsigned int*)&lhs[i] != *(unsigned int*)&rhs[i]) && ((lhs[i] > rhs[i] ? lhs[i] - rhs[i] : rhs[i] - lhs[i]) > epsilon))
return false;
return true;
}
long find(float * const &vertex, const unsigned int &size, float * const &vertices, const unsigned int &count, const float &epsilon) {
for (unsigned int i = 0; i < count; i++)
if (compare(&vertices[i*size], vertex, size, epsilon))
return (long)i;
return -1;
}
inline bool compare(float * const &lhs, float * const & rhs, const unsigned int &size) {
for (unsigned int i = 0; i < size; i++)
if ((*(unsigned int*)&lhs[i] != *(unsigned int*)&rhs[i]) && lhs[i] != rhs[i])
return false;
return true;
}
long find(float * const &vertex, const unsigned int &size, float * const &vertices, const unsigned int &count) {
for (unsigned int i = 0; i < count; i++)
if (compare(&vertices[i*size], vertex, size))
return (long)i;
return -1;
}
inline unsigned int calcHash(float * const &vertex, const unsigned int &size) {
unsigned int result = 0;
for (unsigned int i = 0; i < size; ++i)
result += ((*((unsigned int *)&vertex[i])) & 0xffffff80) >> (i & 0x7);
return result & 0x7fffffff;
}
long find(float * const &vertex, const unsigned int &size, float * const &vertices, unsigned int * const &hashes, const unsigned int &count) {
const unsigned int hash = calcHash(vertex, size);
for (unsigned int i = 0; i < count; i++)
if (hashes[i] == hash && compare(&vertices[i*size], vertex, size))
return (long)i;
return -1;
}
*/
private native static void transformV4M4Jni (Buffer data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<4, 4>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV4M4Jni (float[] data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<4, 4>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV3M4Jni (Buffer data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<3, 4>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV3M4Jni (float[] data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<3, 4>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV2M4Jni (Buffer data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<2, 4>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV2M4Jni (float[] data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<2, 4>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV3M3Jni (Buffer data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<3, 3>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV3M3Jni (float[] data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<3, 3>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV2M3Jni (Buffer data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<2, 3>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static void transformV2M3Jni (float[] data, int strideInBytes, int count, float[] matrix, int offsetInBytes); /*
transform<2, 3>((float*)data, strideInBytes / 4, count, (float*)matrix, offsetInBytes / 4);
*/
private native static long find(Buffer vertex, int vertexOffsetInBytes, int strideInBytes, Buffer vertices, int verticesOffsetInBytes, int numVertices); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices);
*/
private native static long find(float[] vertex, int vertexOffsetInBytes, int strideInBytes, Buffer vertices, int verticesOffsetInBytes, int numVertices); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices);
*/
private native static long find(Buffer vertex, int vertexOffsetInBytes, int strideInBytes, float[] vertices, int verticesOffsetInBytes, int numVertices); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices);
*/
private native static long find(float[] vertex, int vertexOffsetInBytes, int strideInBytes, float[] vertices, int verticesOffsetInBytes, int numVertices); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices);
*/
private native static long find(Buffer vertex, int vertexOffsetInBytes, int strideInBytes, Buffer vertices, int verticesOffsetInBytes, int numVertices, float epsilon); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices, epsilon);
*/
private native static long find(float[] vertex, int vertexOffsetInBytes, int strideInBytes, Buffer vertices, int verticesOffsetInBytes, int numVertices, float epsilon); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices, epsilon);
*/
private native static long find(Buffer vertex, int vertexOffsetInBytes, int strideInBytes, float[] vertices, int verticesOffsetInBytes, int numVertices, float epsilon); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices, epsilon);
*/
private native static long find(float[] vertex, int vertexOffsetInBytes, int strideInBytes, float[] vertices, int verticesOffsetInBytes, int numVertices, float epsilon); /*
return find((float *)&vertex[vertexOffsetInBytes / 4], (unsigned int)(strideInBytes / 4), (float*)&vertices[verticesOffsetInBytes / 4], (unsigned int)numVertices, epsilon);
*/
}