Ogre 3D 1.7

Time for action — modifying the texture

We will use a fragment shader to modify the texture, so change the material to also make use of a fragment shader. Also copy the material and the compositor. This compositor should have the name Compositor2, the material Ogre3DBeginnersGuide/Comp2.

1. fragment_program_ref MyFragmentShader5

   {
   }
   

2. Don't forget to define the fragment program in the material file before using the reference:

   fragment_program MyFragmentShader5 cg
   {
   source Ogre3DBeginnersGuideShaders.cg
   entry_point MyFragmentShader5
   profiles ps_1_1 arbfp1
   }
   

3. Also create a new fragment shader in our shader file. This shader has, as input, the texture coordinates and a texture sample. Once the color of the fragment is computed, this color is returned:

   void ...