void render( base::ContextPtr context, base::CameraPtr cam )
{
// render to texture
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClearStencil( 0 );
multisampleFBO->begin( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT );
glDisable( GL_DEPTH_TEST );
// initialize stencil buffer ---
glEnable(GL_STENCIL_TEST);
glEnable( GL_MULTISAMPLE );
glColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
glEnable(GL_SAMPLE_MASK);
for(int i = 0; i < 4; ++i)
{
glStencilFunc(GL_ALWAYS, i + 1, 0xff);
glStencilOp(GL_REPLACE, GL_REPLACE, GL_REPLACE);
glSampleMaski(0, 0x1 << i);
context->renderScreen(initializeStencilShader);
}
glSampleMaski(0, 0xFFFFFF);
glDisable(GL_SAMPLE_MASK);
glColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
glDisable( GL_MULTISAMPLE );
// now render geometry using stencil routing ---
glStencilFunc(GL_EQUAL, 1, 0xff);
glStencilOp(GL_DECR, GL_DECR, GL_DECR );
context->setCamera( cam );
context->render( geometry, shader );
glDisable(GL_STENCIL_TEST);
multisampleFBO->end();
// final render the shader
// NB: the multisampleTestShader in its pixel section fetches a single sample for each fragment. change the sample index in the
// fetchTexture function to check the values for the different samples
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClearStencil( 0 );
//we also clear the stencil buffer
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT );
context->renderScreen( multisampleTestShader );
}
void render( base::CameraPtr cam )
{
// put rendering code here
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
context->setCamera( cam );
//context->render( grid, greyShader );
step();
glPointSize(5.0f);
context->render( particles, greyShader );
}
void Demo::render( base::ContextPtr context )
{
if( m_shots.empty() )
return;
float time = context->time();
// find current shot
Shot *shot = &m_shots[0];
for( int i=0, numShots = (int)m_shots.size();i<numShots;++i )
{
Shot &s = m_shots[i];
if( ( time > s.start)&&( time < s.end) )
{
shot = &s;
break;
}
}
//std::cout << shot->scene->getName() << std::endl;
//std::cout << time << std::endl;
float localTime = shot->getLocalTime(time);
// update camera from shot camera
if( shot->camera )
{
m_camera->m_transform = shot->camera->xform.eval(localTime);
m_camera->m_fov = math::degToRad(shot->camera->fov);
m_camera->update();
}
//context->setCamera( m_camera );
m_renderFBO->begin();
shot->scene->render(context);
m_renderFBO->end();
m_post->render();
// debug
//m_visualiser->render();
}