@Test
public void createBufferTest() {
out.println(" - - - highLevelTest; create buffer test - - - ");
final CLContext context = CLContext.create();
try {
final int size = 6;
final CLBuffer<ByteBuffer> bb = context.createByteBuffer(size);
final CLBuffer<ShortBuffer> sb = context.createShortBuffer(size);
final CLBuffer<IntBuffer> ib = context.createIntBuffer(size);
final CLBuffer<LongBuffer> lb = context.createLongBuffer(size);
final CLBuffer<FloatBuffer> fb = context.createFloatBuffer(size);
final CLBuffer<DoubleBuffer> db = context.createDoubleBuffer(size);
final List<CLMemory<? extends Buffer>> buffers = context.getMemoryObjects();
assertEquals(6, buffers.size());
assertEquals(1, bb.getElementSize());
assertEquals(2, sb.getElementSize());
assertEquals(4, ib.getElementSize());
assertEquals(8, lb.getElementSize());
assertEquals(4, fb.getElementSize());
assertEquals(8, db.getElementSize());
final ByteBuffer anotherNIO = newDirectByteBuffer(2);
for (final CLMemory<? extends Buffer> memory : buffers) {
final CLBuffer<? extends Buffer> buffer = (CLBuffer<? extends Buffer>) memory;
final Buffer nio = buffer.getBuffer();
assertEquals(nio.capacity(), buffer.getCLCapacity());
assertEquals(buffer.getNIOSize(), buffer.getCLSize());
assertEquals(sizeOfBufferElem(nio), buffer.getElementSize());
assertEquals(nio.capacity() * sizeOfBufferElem(nio), buffer.getCLSize());
final CLBuffer<ByteBuffer> clone = buffer.cloneWith(anotherNIO);
assertEquals(buffer.ID, clone.ID);
assertTrue(clone.equals(buffer));
assertTrue(buffer.equals(clone));
assertEquals(buffer.getCLSize(), clone.getCLCapacity());
assertEquals(buffer.getCLSize(), clone.getCLSize());
assertEquals(anotherNIO.capacity(), clone.getNIOCapacity());
}
} finally {
context.release();
}
}
/**
* Allocates hardware buffers on the graphics card and fills them with data if a buffer has not
* already been previously allocated. Note that this function uses the GL_OES_vertex_buffer_object
* extension, which is not guaranteed to be supported on every device.
*
* @param gl A pointer to the OpenGL ES context.
*/
public void generateHardwareBuffers(GL10 gl) {
if (!mUseHardwareBuffers) {
if (gl instanceof GL11) {
GL11 gl11 = (GL11) gl;
int[] buffer = new int[1];
// Allocate and fill the vertex buffer.
gl11.glGenBuffers(1, buffer, 0);
mVertBufferIndex = buffer[0];
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, mVertBufferIndex);
final int vertexSize = mVertexBuffer.capacity() * mCoordinateSize;
gl11.glBufferData(GL11.GL_ARRAY_BUFFER, vertexSize, mVertexBuffer, GL11.GL_STATIC_DRAW);
// Allocate and fill the texture coordinate buffer.
gl11.glGenBuffers(1, buffer, 0);
mTextureCoordBufferIndex = buffer[0];
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, mTextureCoordBufferIndex);
final int texCoordSize = mTexCoordBuffer.capacity() * mCoordinateSize;
gl11.glBufferData(GL11.GL_ARRAY_BUFFER, texCoordSize, mTexCoordBuffer, GL11.GL_STATIC_DRAW);
// Allocate and fill the color buffer.
gl11.glGenBuffers(1, buffer, 0);
mColorBufferIndex = buffer[0];
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, mColorBufferIndex);
final int colorSize = mColorBuffer.capacity() * mCoordinateSize;
gl11.glBufferData(GL11.GL_ARRAY_BUFFER, colorSize, mColorBuffer, GL11.GL_STATIC_DRAW);
// Unbind the array buffer.
gl11.glBindBuffer(GL11.GL_ARRAY_BUFFER, 0);
// Allocate and fill the index buffer.
gl11.glGenBuffers(1, buffer, 0);
mIndexBufferIndex = buffer[0];
gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, mIndexBufferIndex);
// A char is 2 bytes.
final int indexSize = mIndexBuffer.capacity() * 2;
gl11.glBufferData(
GL11.GL_ELEMENT_ARRAY_BUFFER, indexSize, mIndexBuffer, GL11.GL_STATIC_DRAW);
// Unbind the element array buffer.
gl11.glBindBuffer(GL11.GL_ELEMENT_ARRAY_BUFFER, 0);
mUseHardwareBuffers = true;
assert mVertBufferIndex != 0;
assert mTextureCoordBufferIndex != 0;
assert mIndexBufferIndex != 0;
assert gl11.glGetError() == 0;
}
}
}
private static void convertTexCoords2D(FloatBuffer input, Buffer output) {
if (output.capacity() < input.capacity())
throw new RuntimeException("Output must be at least as large as input!");
input.clear();
output.clear();
Vector2f temp = new Vector2f();
int vertexCount = input.capacity() / 2;
ShortBuffer sb = null;
IntBuffer ib = null;
if (output instanceof ShortBuffer) sb = (ShortBuffer) output;
else if (output instanceof IntBuffer) ib = (IntBuffer) output;
else throw new UnsupportedOperationException();
for (int i = 0; i < vertexCount; i++) {
BufferUtils.populateFromBuffer(temp, input, i);
if (sb != null) {
sb.put((short) (temp.getX() * Short.MAX_VALUE));
sb.put((short) (temp.getY() * Short.MAX_VALUE));
} else {
int v1 = (int) (temp.getX() * ((float) (1 << 16)));
int v2 = (int) (temp.getY() * ((float) (1 << 16)));
ib.put(v1).put(v2);
}
}
}
private static Transform convertPositions(FloatBuffer input, BoundingBox bbox, Buffer output) {
if (output.capacity() < input.capacity())
throw new RuntimeException("Output must be at least as large as input!");
Vector3f offset = bbox.getCenter().negate();
Vector3f size = new Vector3f(bbox.getXExtent(), bbox.getYExtent(), bbox.getZExtent());
size.multLocal(2);
ShortBuffer sb = null;
ByteBuffer bb = null;
float dataTypeSize;
float dataTypeOffset;
if (output instanceof ShortBuffer) {
sb = (ShortBuffer) output;
dataTypeOffset = shortOff;
dataTypeSize = shortSize;
} else {
bb = (ByteBuffer) output;
dataTypeOffset = byteOff;
dataTypeSize = byteSize;
}
Vector3f scale = new Vector3f();
scale.set(dataTypeSize, dataTypeSize, dataTypeSize).divideLocal(size);
Vector3f invScale = new Vector3f();
invScale.set(size).divideLocal(dataTypeSize);
offset.multLocal(scale);
offset.addLocal(dataTypeOffset, dataTypeOffset, dataTypeOffset);
// offset = (-modelOffset * shortSize)/modelSize + shortOff
// scale = shortSize / modelSize
input.clear();
output.clear();
Vector3f temp = new Vector3f();
int vertexCount = input.capacity() / 3;
for (int i = 0; i < vertexCount; i++) {
BufferUtils.populateFromBuffer(temp, input, i);
// offset and scale vector into -32768 ... 32767
// or into -128 ... 127 if using bytes
temp.multLocal(scale);
temp.addLocal(offset);
// quantize and store
if (sb != null) {
short v1 = (short) temp.getX();
short v2 = (short) temp.getY();
short v3 = (short) temp.getZ();
sb.put(v1).put(v2).put(v3);
} else {
byte v1 = (byte) temp.getX();
byte v2 = (byte) temp.getY();
byte v3 = (byte) temp.getZ();
bb.put(v1).put(v2).put(v3);
}
}
Transform transform = new Transform();
transform.setTranslation(offset.negate().multLocal(invScale));
transform.setScale(invScale);
return transform;
}
protected static int estimatedMemorySize(Buffer buffer) {
if (buffer == null) {
return 0;
}
return buffer.capacity() * GLBuffers.sizeOfBufferElem(buffer);
}
void _reset(Buffer b) {
b.position(0);
b.limit(b.capacity());
}
