void FboBasicApp::draw()
{
// clear the window to gray
gl::clear( Color( 0.35f, 0.35f, 0.35f ) );
// setup our camera to render the cube
CameraPersp cam( getWindowWidth(), getWindowHeight(), 60.0f );
cam.setPerspective( 60, getWindowAspectRatio(), 1, 1000 );
cam.lookAt( vec3( 2.6f, 1.6f, -2.6f ), vec3( 0 ) );
gl::setMatrices( cam );
// use the scene we rendered into the FBO as a texture
mFbo->bindTexture();
// draw a cube textured with the FBO
{
gl::ScopedGlslProg shaderScp( gl::getStockShader( gl::ShaderDef().texture() ) );
gl::drawCube( vec3( 0 ), vec3( 2.2f ) );
}
// show the FBO color texture in the upper left corner
gl::setMatricesWindow( toPixels( getWindowSize() ) );
gl::draw( mFbo->getColorTexture(), Rectf( 0, 0, 128, 128 ) );
// and draw the depth texture adjacent
gl::draw( mFbo->getDepthTexture(), Rectf( 128, 0, 256, 128 ) );
}
void BayBridgeApp::drawFbo()
{
mFboRaw->bindFramebuffer();
gl::clear(Color::black());
gl::setMatrices(mCamera);
drawBridge(vec3(0), 0.0f);
mBridge.Draw();
mFboRaw->unbindFramebuffer();
////////////////////////////////////////////////////
mFboHiPass->bindFramebuffer();
mFboRaw->bindTexture(0);
mShaderHiPass->bind();
gl::enableAlphaBlending();
gl::clear(ColorA::zero());
gl::setMatricesWindow(getWindowSize());
gl::drawSolidRect(Rectf({vec2(0), getWindowSize()}));
gl::disableAlphaBlending();
mFboRaw->unbindTexture(0);
mFboHiPass->unbindFramebuffer();
////////////////////////////////////////////////////
mFboBlurU->bindFramebuffer();
mFboHiPass->bindTexture(0);
mShaderBlur->bind();
mShaderBlur->uniform("uBlurAxis", vec2(1.0, 0.0));
mShaderBlur->uniform("uBlurStrength", 2.0f);
mShaderBlur->uniform("uBlurSize", 1.0f);
gl::clear(ColorA::zero());
gl::setMatricesWindow(getWindowSize());
gl::drawSolidRect(Rectf({ vec2(0), getWindowSize() }));
mFboHiPass->unbindTexture(0);
mFboBlurU->unbindFramebuffer();
////////////////////////////////////////////////////
mFboBlurV->bindFramebuffer();
mFboBlurU->bindTexture(0);
mShaderBlur->bind();
mShaderBlur->uniform("uBlurAxis", vec2(0.0, 1.0));
mShaderBlur->uniform("uBlurStrength", 2.0f);
mShaderBlur->uniform("uBlurSize", 2.0f);
gl::clear(ColorA::zero());
gl::setMatricesWindow(getWindowSize());
gl::drawSolidRect(Rectf({ vec2(0), getWindowSize() }));
mFboBlurU->unbindTexture(0);
mFboBlurV->unbindFramebuffer();
}