Render pass

This example demonstrates the use of the render pass system for adding Gaussian noise post-processing effect to a camera.

Compile and run the example

Clone the source code, create a build directory and use cmake and make to compile the code:

git clone https://github.com/ignitionrobotics/ign-rendering
cd ign-rendering/examples/render_pass
mkdir build
cd build
cmake ..
make

Execute the example:

./render_pass

You'll see:

[Msg] Loading plugin [ignition-rendering7-ogre]
Engine 'optix' is not supported
===============================
  TAB - Switch render engines
  ESC - Exit
===============================

Code

Get the render pass system and create a Gaussian noise render pass. Then we just need to set the noise mean and the standard deviation parameters and apply this render pass to the camera.

  CameraPtr camera = std::dynamic_pointer_cast<Camera>(sensor);
  RenderPassSystemPtr rpSystem = engine->RenderPassSystem();
  if (rpSystem)
  {
    // add gaussian noise pass
    RenderPassPtr pass = rpSystem->Create<GaussianNoisePass>();
    GaussianNoisePassPtr noisePass =
        std::dynamic_pointer_cast<GaussianNoisePass>(pass);
    noisePass->SetMean(0.1);
    noisePass->SetStdDev(0.08);
    camera->AddRenderPass(noisePass);
  }