void GlutIdle() { static int lastRenderedPixels = 0; if ( mode == MODE_RENDERING ) { int nrp = renderImage.GetNumRenderedPixels(); if ( lastRenderedPixels != nrp ) { lastRenderedPixels = nrp; if ( renderImage.IsRenderDone() ) { mode = MODE_RENDER_DONE; int endTime = (int) time(NULL); int t = endTime - startTime; int h = t / 3600; int m = (t % 3600) / 60; int s = t % 60; printf("\nRender time is %d:%02d:%02d.\n",h,m,s); renderImage.ComputeZBufferImage(); std::string fileloc ("/Users/varunk/Desktop/RayTracerProj1/RayTracePrj11/RayTracePrj11/"); renderImage.SaveZImage((fileloc + "zbuffer.ppm").c_str()); renderImage.SaveImage((fileloc + "renderimage.ppm").c_str()); renderImage.ComputeSampleCountImage(); renderImage.SaveSampleCountImage((fileloc + "samplecountimage.ppm").c_str()); } glutPostRedisplay(); } if ( viewMode == VIEWMODE_IRRADCOMP ) glutPostRedisplay(); } }
void BeginRender() { cout<<"\nBeginning Render..."; float alpha = camera.fov; float l = 1.0; float h = l * tan(alpha/2.0 *(M_PI/180)); float aspectRatio = (float)camera.imgWidth/camera.imgHeight; float s = aspectRatio * h; float dx = (2 * s)/camera.imgWidth; float dy = -(2 * h)/camera.imgHeight; float dxx = dx/2,dyy=dy/2; Point3 K(-s,h,-l); K.x += dxx; K.y += dyy; for(int i = 0; i< camera.imgHeight; i++){ for(int j = 0; j<camera.imgWidth; j++){ K.x += dx; Matrix3 RotMat; Point3 dvec = camera.dir - camera.pos; Point3 svec = camera.up.Cross(dvec); dvec.Normalize(); svec.Normalize(); camera.up.Normalize(); RotMat.Set(svec,camera.up, dvec); Ray r(camera.pos, K); r.dir=r.dir*RotMat; r.dir.Normalize(); HitInfo hInfo; hInfo.Init(); if(rootNode.GetNumChild()>0){ // for(int k=0; k < rootNode.GetNumChild(); ++k){ // RayTrace(rootNode.GetChild(k),r,i * camera.imgWidth + j); // } if(RayTrace_2(r, hInfo)) { renderImage.PutPixel(i *camera.imgWidth+j, white, hInfo.z); } else renderImage.PutPixel(i *camera.imgWidth+j, black, BIGFLOAT); } } K.x = -s; K.x += dxx; K.y += dy; } cout<<"Render Complete"<<endl; renderImage.ComputeZBufferImage(); renderImage.SaveZImage("/Users/varunk/Desktop/RayTracerProj1/RayTracerProj1/zbuffer.ppm"); renderImage.SaveImage("/Users/varunk/Desktop/RayTracerProj1/RayTracerProj1/renderimage.ppm"); }
void Renderer::startRendering(size_t i_threadCount) { threadCount = i_threadCount; mThreadHandle = ThreadHandle(threadCount); imageWidth = renderImage.GetWidth(); imageHeight = renderImage.GetHeight(); noOfRowsToRenderPerThread = imageHeight / threadCount; renderingImage = renderImage.GetPixels(); zBufferImage = renderImage.GetZBuffer(); sampleCountImage = renderImage.GetSampleCount(); operationCountImage = renderImage.GetOperationCountImage(); myEngine::Timing::Clock *clock = myEngine::Timing::Clock::createAndStart(); /*for (int i = 0; i < renderImage.GetHeight(); ++i) { for (int j = 0; j < renderImage.GetWidth(); ++j) { calculatePixelColor(rootNode,lights,j, i); } }*/ int *threadVal = new int[threadCount]; for (size_t i = 0; i < threadCount; i++) { threadVal[i] = i; std::cout << "\nPassing Value to thread" << threadVal[i]; mThreadHandle.thread[i] = CreateThread(nullptr, 0, static_cast<LPTHREAD_START_ROUTINE>(renderPixel), &threadVal[i], CREATE_SUSPENDED, nullptr); } for (size_t i = 0; i < threadCount;i++) { ResumeThread(mThreadHandle.thread[i]); } std::cout << "Wait Val"<<std::endl << WaitForMultipleObjects(threadCount, mThreadHandle.thread, TRUE, INFINITE) << std::endl;; std::cout << "Wait finished"; if (WaitForMultipleObjects(threadCount + 1, mThreadHandle.thread, TRUE, INFINITE)) { mThreadHandle.destroyThread(); } TCHAR* mutexName = __T("WritingMutex"); HANDLE mutexHandle = OpenMutex(MUTEX_ALL_ACCESS, FALSE, mutexName); CloseHandle(mutexHandle); renderImage.SaveImage("RayCasted.ppm"); renderImage.ComputeZBufferImage(); renderImage.SaveZImage("RayCastWithZ.ppm"); renderImage.ComputeSampleCountImage(); renderImage.SaveSampleCountImage("SampleCountImage.ppm"); clock->updateDeltaTime(); double time = clock->getdeltaTime(); printf("Time to render ray casting %f", clock->getdeltaTime()); }