void StereoscopicRenderingApp::draw()
{
// clear color and depth buffers
gl::clear( mColorBackground );
// stereoscopic rendering
switch( mRenderMethod )
{
case MONO:
// render mono camera
mCamera.disableStereo();
render();
break;
case ANAGLYPH_RED_CYAN:
renderAnaglyph( getWindowSize(), Color(1, 0, 0), Color(0, 1, 1) );
break;
case SIDE_BY_SIDE:
renderSideBySide( getWindowSize() );
break;
case OVER_UNDER:
renderOverUnder( getWindowSize() );
break;
case INTERLACED_HORIZONTAL:
renderInterlacedHorizontal( getWindowSize() );
break;
}
// draw auto focus visualizer
if( mDrawAutoFocus ) mAF.draw();
}
void StereoscopicRenderingApp::draw()
{
// find dimensions of each viewport
int w = getWindowWidth();
int h = getWindowHeight();
// clear color and depth buffers
gl::clear( mBackgroundColor );
// stereoscopic rendering
switch( mRenderMethod )
{
case MONO:
// render mono camera
mCamera.disableStereo();
render();
break;
case SIDE_BY_SIDE:
// store current viewport
glPushAttrib( GL_VIEWPORT_BIT );
// draw to left half of window only
gl::setViewport( Area(0, 0, w / 2, h) );
// render left camera
mCamera.enableStereoLeft();
render();
// draw to right half of window only
gl::setViewport( Area(w / 2, 0, w, h) );
// render right camera
mCamera.enableStereoRight();
render();
// restore viewport
glPopAttrib();
break;
case OVER_UNDER:
// store current viewport
glPushAttrib( GL_VIEWPORT_BIT );
// draw to top half of window only
gl::setViewport( Area(0, 0, w, h / 2) );
// render left camera
mCamera.enableStereoLeft();
render();
// draw to bottom half of window only
gl::setViewport( Area(0, h / 2, w, h) );
// render right camera
mCamera.enableStereoRight();
render();
// restore viewport
glPopAttrib();
break;
case ANAGLYPH_RED_CYAN:
// store current viewport
glPushAttrib( GL_VIEWPORT_BIT );
// bind the left FBO and adjust the viewport to its bounds
mAnaglyphLeft.bindFramebuffer();
gl::setViewport( mAnaglyphLeft.getBounds() );
// because glClear() does not respect the color mask,
// clear the color (and depth) buffers using a red filtered background color
gl::clear( mBackgroundColor * Color( 1, 0, 0 ) );
// set up color mask to only draw red and render left camera
glColorMask( true, false, false, true );
mCamera.enableStereoLeft();
render();
glColorMask( true, true, true, true );
mAnaglyphLeft.unbindFramebuffer();
// bind the right FBO and adjust the viewport to its bounds
mAnaglyphRight.bindFramebuffer();
gl::setViewport( mAnaglyphRight.getBounds() );
// because glClear() does not respect the color mask,
// clear the color (and depth) buffers using a cyan filtered background color
gl::clear( mBackgroundColor * Color( 0, 1, 1 ) );
// set up color mask to only draw cyan and render right camera
glColorMask( false, true, true, true );
mCamera.enableStereoRight();
render();
glColorMask( true, true, true, true );
mAnaglyphRight.unbindFramebuffer();
// restore viewport
glPopAttrib();
// draw the FBO's on top of each other using a special additive blending operation
gl::color( Color::white() );
gl::draw( mAnaglyphLeft.getTexture(), Rectf( 0, (float) h, (float) w, 0 ) );
glEnable( GL_BLEND );
glBlendFunc( GL_ONE, GL_ONE );
gl::draw( mAnaglyphRight.getTexture(), Rectf( 0, (float) h, (float) w, 0) );
glDisable( GL_BLEND );
break;
}
// draw auto focus visualizer
if( mDrawAutoFocus ) mAF.draw();
}