void display()
{
if(lastTime == 0)
{
lastTime = glutGet(GLUT_ELAPSED_TIME);
}
now = glutGet(GLUT_ELAPSED_TIME);
delta_t = (now - lastTime) / 1000.0f;
//lastTime = now; //1 / delta_t here means the frame rate.
fpsTracker.timestamp();
//update camera information per frame
updateCamera();
checkClear();
if(moved)
lastTime = now;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//do raytrace
raytrace();
//render result as texture
displayTexture();
//draw tool bar
TwDraw();
drawFps();
glutSwapBuffers();
glutPostRedisplay();
}
void onDrawCb()
{
// Keep track of time
theFpsTracker.timestamp();
// Draw Scene and overlay
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
theCamera.draw();
theSmokeSim.draw(theCamera);
drawOverlay();
glutSwapBuffers();
}
void display(){
theFpsTracker.timestamp();
cudaEvent_t start, stop;
float time;
// Keep track of time
cudaEventCreate(&start);
cudaEventCreate(&stop);
cudaEventRecord( start, 0 );
runCuda();
cudaEventRecord( stop, 0 );
cudaEventSynchronize( stop );
cudaEventElapsedTime( &time, start, stop );
cudaEventDestroy( start );
cudaEventDestroy( stop );
char info[1024];
sprintf(info, "565Raytracer | %i Iterations | Framerate : %3.1f fps | GPU Elapsed Time : %3.1f ms", iterations, theFpsTracker.fpsAverage(), time);
string title(info);
glutSetWindowTitle(title.c_str());
glBindBuffer( GL_PIXEL_UNPACK_BUFFER, pbo);
glBindTexture(GL_TEXTURE_2D, displayImage);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glClear(GL_COLOR_BUFFER_BIT);
// VAO, shader program, and texture already bound
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
glutPostRedisplay();
glutSwapBuffers();
}
void onDrawCb()
{
// Keep track of time
theFpsTracker.timestamp();
// Draw Scene and overlay
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
theCamera.draw();
//drawAxes();
vec3 cpos = theCamera.getPosition();
float pos[4] = {cpos[0], cpos[1]+2.0, cpos[2],0.0};
glLightfv(GL_LIGHT0, GL_POSITION, pos);
theWorld.Draw();
theJello.Draw(cpos);
//drawOverlay();
glutSwapBuffers();
}