void ofxKinectTracking::init(){
openCL.setupFromOpenGL();
#ifndef NORMAL_CAMERA
kinect = new ofxKinect();
kinect->init();
kinect->setVerbose(true);
kinect->open();
//The depth image
clImage[0].initFromTexture(kinect->getDepthTextureReference(), CL_MEM_READ_ONLY, 0);
#else
videoGrabber.initGrabber(640, 480, true);
clImage[0].initWithTexture(640, 480, GL_LUMINANCE, CL_MEM_READ_ONLY);
pixels = new unsigned char[640*480];
#endif
//The debug image
clImage[1].initWithTexture(640, 480, GL_RGBA);
//Intialize the ants buffer
resetBufferData();
clAntsBuffer.initBuffer(sizeof(Ant)*NUM_ANTS, CL_MEM_READ_WRITE, ants, true);
//Buffer of shared variables
sharedVariables[0] = 0;
clSharedBuffer.initBuffer(sizeof(int)*1, CL_MEM_READ_WRITE, sharedVariables, true);
openCL.loadProgramFromFile("../../../../../addons/ofxKinectTracking/src/KinectTracking.cl");
openCL.loadKernel("preUpdate");
openCL.loadKernel("update");
openCL.loadKernel("postUpdate");
}
void ofxKinectTracking::clear(){
resetBufferData();
// clAntsBuffer.initBuffer(sizeof(Ant)*NUM_ANTS, CL_MEM_READ_WRITE, ants, true);
clAntsBuffer.write(ants, 0, sizeof(Ant)*NUM_ANTS, true);
}
void ofxKinectTracking::update(){
bool newFrame;
#ifndef NORMAL_CAMERA
kinect->update();
newFrame = kinect->isFrameNew();
#else
videoGrabber.update();
newFrame = videoGrabber.isFrameNew();
if(newFrame){
int pixelIndex = 0;
for(int i=0; i<640; i++) {
for(int j=0; j<480; j++) {
int indexRGB = pixelIndex * 3;
int indexL = pixelIndex;
pixels[indexL] = videoGrabber.getPixels()[indexRGB+1 ];
pixelIndex++;
}
}
// write the new pixel data into the OpenCL Image (and thus the OpenGL texture)
clImage[0].write(pixels);
}
#endif
if(newFrame){
cl_int2 spawnCoord = {int(ofRandom(0, 640)), int(ofRandom(0, 480))};
if(ofRandom(0, 1) < 0.500){
spawnCoord[0] = -1;
spawnCoord[0] = -1;
}
MSA::OpenCLKernel *preKernel = openCL.kernel("preUpdate");
MSA::OpenCLKernel *updateKernel = openCL.kernel("update");
MSA::OpenCLKernel *postKernel = openCL.kernel("postUpdate");
//Prepare timetaking
double totalTimeTmp;
uint64_t mbeg, mend;
openCL.finish();
mbeg = mach_absolute_time();
//Run pre update kernel
preKernel->setArg(0, clImage[0].getCLMem());
preKernel->setArg(1, clAntsBuffer.getCLMem());
preKernel->run2D(640, 480);
//Calculate time
openCL.finish();
mend = mach_absolute_time();
killingTime.push_back(machcore(mend, mbeg));
totalTimeTmp = machcore(mend, mbeg);
mbeg = mach_absolute_time();
//Run update kernel
size_t shared_size = (1 * 64) * sizeof(int);
updateKernel->setArg(0, clAntsBuffer.getCLMem());
updateKernel->setArg(1, clSharedBuffer.getCLMem());
updateKernel->setArg(2, spawnCoord);
clSetKernelArg(updateKernel->getCLKernel(), 3, shared_size, NULL);
for(int i=0;i<NUM_ITERATIONS;i++){
updateKernel->run2D(640, 480);
}
//Calculate time
openCL.finish();
mend = mach_absolute_time();
spawningTime.push_back(machcore(mend, mbeg));
totalTimeTmp += machcore(mend, mbeg);
mbeg = mach_absolute_time();
//Run post update kernel
postKernel->setArg(0, clImage[0].getCLMem());
postKernel->setArg(1, clImage[1].getCLMem());
postKernel->setArg(2, clAntsBuffer.getCLMem());
postKernel->setArg(3, clSharedBuffer.getCLMem());
postKernel->setArg(4, spawnCoord);
postKernel->run2D(640, 480);
//Calculate time
openCL.finish();
mend = mach_absolute_time();
updateTime.push_back(machcore(mend, mbeg));
totalTimeTmp += machcore(mend, mbeg);
totalTime.push_back(totalTimeTmp);
if(totalTime.size() > (640*2)/3){
totalTime.erase(totalTime.begin());
killingTime.erase(killingTime.begin());
spawningTime.erase(spawningTime.begin());
updateTime.erase(updateTime.begin());
}
}
}
//--------------------------------------------------------------
void testApp::setup(){
ofBackground(0, 0, 0);
ofSetLogLevel(OF_LOG_VERBOSE);
ofSetVerticalSync(false);
#ifdef USE_OPENGL_CONTEXT
opencl.setupFromOpenGL();
#else
opencl.setup(CL_DEVICE_TYPE_CPU, 2);
#endif
for(int i=0; i<NUM_PARTICLES; i++) {
Particle &p = particles[i];
p.vel.set(0, 0);
p.mass = ofRandom(0.5, 1);
particlesPos[i].set(ofRandomWidth(), ofRandomHeight());
}
glGenBuffersARB(1, vbo);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, vbo[0]);
glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(float2) * NUM_PARTICLES, particlesPos, GL_DYNAMIC_COPY_ARB);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
opencl.loadProgramFromFile("MSAOpenCL/Particle.cl");
kernelUpdate = opencl.loadKernel("updateParticle");
clMemParticles.initBuffer(sizeof(Particle) * NUM_PARTICLES, CL_MEM_READ_WRITE, particles);
#ifdef USE_OPENGL_CONTEXT
clMemPosVBO.initFromGLObject(vbo[0]);
#else
clMemPosVBO.initBuffer(sizeof(Vec2) * NUM_PARTICLES, CL_MEM_READ_WRITE, particlesPos);
#endif
kernelUpdate->setArg(0, clMemParticles.getCLMem());
kernelUpdate->setArg(1, clMemPosVBO.getCLMem());
kernelUpdate->setArg(2, mousePos);
kernelUpdate->setArg(3, dimensions);
glPointSize(1);
}