// Called to draw scene
void RenderScene(void)
{
// Clear the window with current clearing color
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
frameCamera.ApplyCameraTransform();
// Position light before any other transformations
glLightfv(GL_LIGHT0, GL_POSITION, fLightPos);
// Draw the ground
glColor3f(0.60f, .40f, .10f);
DrawGround();
// Draw shadows first
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glPushMatrix();
glMultMatrixf(mShadowMatrix);
DrawInhabitants(1);
glPopMatrix();
glEnable(GL_LIGHTING);
glEnable(GL_DEPTH_TEST);
// Draw inhabitants normally
DrawInhabitants(0);
glPopMatrix();
// Do the buffer Swap
glutSwapBuffers();
glutPostRedisplay();
}
// Called to draw scene
void RenderScene(void)
{
// Clear the window with current clearing color
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glPushMatrix();
frameCamera.ApplyCameraTransform();
// Position light before any other transformations
glLightfv(GL_LIGHT0, GL_POSITION, fLightPos);
// Draw the ground
glColor3f(1.0f, 1.0f, 1.0f);
DrawGround();
// Draw shadows first
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_STENCIL_TEST);
glPushMatrix();
glMultMatrixf(mShadowMatrix);
DrawInhabitants(1);
glPopMatrix();
glDisable(GL_STENCIL_TEST);
glDisable(GL_BLEND);
glEnable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
// Draw inhabitants normally
DrawInhabitants(0);
glPopMatrix();
// Do the buffer Swap
glutSwapBuffers();
}
//////////////////////////////////////////////////
// Draw everything
void RenderScene(void)
{
static int iFrames = 0; // Count frames to calculate fps ever 100 frames
static float fps = 0.0f; // Calculated fps
// Clear the window
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glPushMatrix();
frameCamera.ApplyCameraTransform();
// Position light before any other transformations
glLightfv(GL_LIGHT0, GL_POSITION, fLightPos);
// Draw the ground
glColor3f(1.0f, 1.0f, 1.0f);
DrawGround();
// Draw shadows first
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_STENCIL_TEST);
glPushMatrix();
glMultMatrixf(mShadowMatrix);
DrawInhabitants(1);
glPopMatrix();
glDisable(GL_STENCIL_TEST);
glDisable(GL_BLEND);
glEnable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
// Draw inhabitants normally
DrawInhabitants(0);
glPopMatrix();
// Calculate Frame Rate, once every 100 frames
iFrames++;
if(iFrames == 100)
{
float fTime;
// Get the current count
LARGE_INTEGER lCurrent;
QueryPerformanceCounter(&lCurrent);
fTime = (float)(lCurrent.QuadPart - FPSCount.QuadPart) /
(float)CounterFrequency.QuadPart;
fps = (float)iFrames / fTime;
// Reset frame count and timer
iFrames = 0;
QueryPerformanceCounter(&FPSCount);
}
// If we have the window position extension, display
// the frame rate, and tell if multisampling was enabled
// and if the VSync is turned on.
if(glWindowPos2i != NULL)
{
int iRow = 10;
char cBuffer[64];
// Turn off depth test, lighting, and texture mapping
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glColor3f(1.0f, 1.0f, 1.0f);
// Set position and display message
glWindowPos2i(0, iRow);
glListBase(nFontList);
glCallLists (13, GL_UNSIGNED_BYTE, "OpenGL Rocks!");
iRow+= 20;
// Display the frame rate
sprintf(cBuffer,"FPS: %.1f", fps);
glWindowPos2i(0, iRow);
glCallLists(strlen(cBuffer), GL_UNSIGNED_BYTE, cBuffer);
iRow += 20;
// MultiSampled?
if(startupOptions.bFSAA == TRUE && startupOptions.nPixelFormatMS != 0)
{
glWindowPos2i(0, iRow);
glCallLists(25 ,GL_UNSIGNED_BYTE,"Multisampled Frame Buffer");
iRow += 20;
}
// VSync?
if(wglSwapIntervalEXT != NULL && startupOptions.bVerticalSync == TRUE)
{
glWindowPos2i(0, iRow);
glCallLists(9 ,GL_UNSIGNED_BYTE, "VSync On");
iRow += 20;
}
// Put everything back
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
}
}
// Called to draw scene
void RenderScene(void)
{
static int iFrames = 0; // Frame count
static CStopWatch frameTimer; // Render time
// Clear the window with current clearing color
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glPushMatrix();
frameCamera.ApplyCameraTransform();
// Position light before any other transformations
glLightfv(GL_LIGHT0, GL_POSITION, fLightPos);
// Draw the ground
glColor3f(1.0f, 1.0f, 1.0f);
if(iMethod == 0)
DrawGround();
else
glCallList(groundList);
// Draw shadows first
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_STENCIL_TEST);
glPushMatrix();
glMultMatrixf(mShadowMatrix);
DrawInhabitants(1);
glPopMatrix();
glDisable(GL_STENCIL_TEST);
glDisable(GL_BLEND);
glEnable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
// Draw inhabitants normally
DrawInhabitants(0);
glPopMatrix();
// Do the buffer Swap
glutSwapBuffers();
// Increment the frame count
iFrames++;
// Do periodic frame rate calculation
if(iFrames == 100)
{
float fps;
char cBuffer[64];
fps = 100.0f / frameTimer.GetElapsedSeconds();
if(iMethod == 0)
sprintf(cBuffer,"OpenGL SphereWorld without Display Lists %.1f fps", fps);
else
sprintf(cBuffer,"OpenGL SphereWorld with Display Lists %.1f fps", fps);
glutSetWindowTitle(cBuffer);
frameTimer.Reset();
iFrames = 0;
}
}
