Texturing 2D vectorial terrain (or simply masking texture)

Question

I have a procedurally generated terrain, as follows:

It is generated and then built using Farseer Physics, however I haven't found a way to create and apply a mask to texture it properly, I have already played with stencil buffers and pixel shaders but I still have no solution at the moment. How would I do that? Am I going the right direction with stencil and pixel shader? Thank You.

Answer 1

I think the easiest way would be to just create some geometry you can actually texture. Just create a quad (2 triangles) for every segment of your world. This should be straight-forward to texture. To optimize this, you can remove quads that leave the screen during gameplay.

For an idea how you could apply your texture using UV coordinates, see this answer.

Answer 2

taking a different approach i would look to do something similar to http://www.riemers.net/eng/Tutorials/XNA/Csharp/Series2D/Random_terrain.php

essentially find what is below the line and generate a color