/**
* Renders a scene not to the screen but into a texture
*/
void drawSceneToSpecificFramebuffer(GLuint fbo, int renderToTexture) {
/**
* Drawing into the given framebuffer-object
*/
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
if (renderToTexture) {
glClearColor(0.0, 0.8, 0.8, 0.0);
} else {
glClearColor(0.0, 1.0, 1.0, 0.0);
}
glClearDepth(1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisable(GL_CULL_FACE);
glViewport (0, 0, G_Width, G_Height);
setProjection ((double)G_Width/G_Height);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt (getCameraPosition(0), getCameraPosition(1), getCameraPosition(2),
0.0, 0.0, 0.0,
0.0, 1.0, 0.0);
glDisable(GL_TEXTURE_2D);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
printf ("Framebuffer is not correct!\n");
}
drawDemo(renderToTexture);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
void display(void)
{
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
if( m_pDemo->m_enableLighting )
{
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
}
else
{
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
}
glLoadIdentity();
{
setPerspectiveProjMatrix();
setModelViewMatrix();
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1, 1, 1);
if( m_pDemo->m_enableLighting )
{
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_NORMALIZE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
float lightPos[] = {0,2,2,1};
glLightfv(GL_LIGHT0, GL_POSITION, lightPos);
float s = 0.3f;
float ambColor[] = {s,s,s,1.f};
glLightfv(GL_LIGHT0, GL_AMBIENT, ambColor);
}
else
{
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
}
drawDemo();
if( m_pDemo->m_enableLighting )
{
glDisable(GL_LIGHT0);
glDisable(GL_LIGHTING);
}
if( drawText )
{
setOrthoProjMatrix();
glLoadIdentity();
drawDemo2D();
}
glutSwapBuffers();
}
void paint (Graphics& g) override
{
double startTime = 0.0;
{
// A ScopedSaveState will return the Graphics context to the state it was at the time of
// construction when it goes out of scope. We use it here to avoid clipping the fps text
const Graphics::ScopedSaveState state (g);
if (controls.clipToRectangle.getToggleState()) clipToRectangle (g);
if (controls.clipToPath .getToggleState()) clipToPath (g);
if (controls.clipToImage .getToggleState()) clipToImage (g);
g.setImageResamplingQuality (controls.quality.getToggleState() ? Graphics::highResamplingQuality
: Graphics::mediumResamplingQuality);
// take a note of the time before the render
startTime = Time::getMillisecondCounterHiRes();
// then let the demo draw itself..
drawDemo (g);
}
double now = Time::getMillisecondCounterHiRes();
double filtering = 0.08;
const double elapsedMs = now - startTime;
averageTimeMs += (elapsedMs - averageTimeMs) * filtering;
const double sinceLastRender = now - lastRenderStartTime;
lastRenderStartTime = now;
const double effectiveFPS = 1000.0 / averageTimeMs;
const double actualFPS = sinceLastRender > 0 ? (1000.0 / sinceLastRender) : 0;
averageActualFPS += (actualFPS - averageActualFPS) * filtering;
GlyphArrangement ga;
ga.addFittedText (displayFont,
"Time: " + String (averageTimeMs, 2)
+ " ms\nEffective FPS: " + String (effectiveFPS, 1)
+ "\nActual FPS: " + String (averageActualFPS, 1),
0, 10.0f, getWidth() - 10.0f, (float) getHeight(), Justification::topRight, 3);
g.setColour (Colours::white.withAlpha (0.5f));
g.fillRect (ga.getBoundingBox (0, ga.getNumGlyphs(), true).getSmallestIntegerContainer().expanded (4));
g.setColour (Colours::black);
ga.draw (g);
}
