Ogre 3D 1.7

Time for action — using colors to see interpolation

To see how color interpolation works we need to change our code a bit.

1. Again, copy the material and make sure to adjust all names.
2. The only thing we need to change in the material is that we don't need a texture unit. We can just delete it.
3. In the application code, we need to replace the textureCoord() with color():

   manual->position(5.0, 0.0, 0.0);
   manual->color(0,0,1);
   manual->position(-5.0, 10.0, 0.0);
   manual->color(0,1,0);
   manual->position(-5.0, 0.0, 0.0);
   manual->color(0,1,0);
   manual->position(5.0, 10.0, 0.0);
   manual->color(0,0,1);
   

4. The vertex shader also needs some adjustments. Replace the two texture coordinate parameters with color parameters and also change the assignment line:

   void MyVertexShader4( ...