void drawOverlay()
{
// Draw Overlay
glColor4f(1.0, 1.0, 1.0, 1.0);
glPushAttrib(GL_LIGHTING_BIT);
glDisable(GL_LIGHTING);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0, 1.0, 0.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glRasterPos2f(0.01, 0.01);
char* intstr;
switch (theJello.GetIntegrationType())
{
case JelloMesh::EULER: intstr = "Euler"; break;
case JelloMesh::MIDPOINT: intstr = "Midpoint"; break;
case JelloMesh::RK4: intstr = "RK4"; break;
}
char info[1024];
sprintf(info, "Framerate: %3.1f %s %s",
theFpsTracker.fpsAverage(),
intstr, isRecording? "(Recording ON)" : "");
for (unsigned int i = 0; i < strlen(info); i++)
{
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, info[i]);
}
glPopAttrib();
}
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 drawOverlay()
{
// Draw Overlay
glColor4f(1.0, 1.0, 1.0, 1.0);
glPushAttrib(GL_LIGHTING_BIT);
glDisable(GL_LIGHTING);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0, 1.0, 0.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glRasterPos2f(0.01, 0.01);
char info[1024];
sprintf(info, "Framerate: %3.1f | Frame: %u | %s",
theFpsTracker.fpsAverage(), theSmokeSim.getTotalFrames(),
theSmokeSim.isRecording()? "Recording..." : "");
for (unsigned int i = 0; i < strlen(info); i++)
{
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, info[i]);
}
glPopAttrib();
}
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 drawFps()
{
glColor4f(1.0, 1.0, 0.0, 1.0);
glPushAttrib(GL_LIGHTING_BIT);
glDisable(GL_LIGHTING);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0, 1.0, 0.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glRasterPos2f(0.01, 0.01);
char info[1024];
sprintf(info, "Render Frame Rate: %3.1f",
frame_num / delta_t);//fpsTracker.fpsAverage()
for (unsigned int i = 0; i < strlen(info); i++)
{
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, info[i]);
}
glRasterPos2f(0.01, 0.03);
sprintf(info, "Display Frame Rate: %3.1f",
fpsTracker.fpsAverage());//
for (unsigned int i = 0; i < strlen(info); i++)
{
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, info[i]);
}
glRasterPos2f(0.01, 0.05);
sprintf(info, "Total Frames: %3d",
frame_num);//
for (unsigned int i = 0; i < strlen(info); i++)
{
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, info[i]);
}
glRasterPos2f(0.01, 0.07);
sprintf(info, "Total Time: %3.1f",
delta_t);//
for (unsigned int i = 0; i < strlen(info); i++)
{
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, info[i]);
}
glPopAttrib();
}
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();
}