Ogre 3D 1.7

Time for action — combining two compositor effects

To combine two compositors, we need to create a new one:

1. To create a new compositor, we need two textures one for storing the scene and one for storing some temporary results:

   compositor Compositor4
   {
   technique
   {
   texture scene target_width target_height PF_R8G8B8
   texture temp target_width target_height PF_R8G8B8
   

2. Fill the scene texture, as done previously, and then fill the temp texture using the scene texture and our black and white material:

   target scene
   {
   input previous
   }
   target temp
   {
   pass render_quad
   {
   material Ogre3DBeginnersGuide/Comp2
   input 0 scene
   }
   }
   

3. Then use the temporary material and our invert material to create the output texture:

   target_output { input none pass render_quad { material ...