Demonstration of how we can use tessellation shaders to make faster fragment shaders.

You can read the details in my blog

I will describe how to use the GUI.

• Wireframe check this checkbox to render the teapot in wireframe.
• Do Vertex Calculation check this checkbox to move the calculation(either specular lighting calculation or procedural texture calculation) from the fragment shader to the vertex shader
• Use Tessellation if checked, the calculation is moved from the fragment shader to the tessellation evaluation shader.
• TessLevel controls the tessellation level of the tessellation shader.
• Render Mode controls whether we are calculating specular lighting, or we are calculating a procedural texture on the teapot.

If on Linux or OS X, you can build it in the terminal by doing:

mkdir build && cmake .. && make

you can then launch the app by using the launch script:

./launch-tess_opt.sh

If on Windows, create a build/ folder, and run cmake .. from inside that folder. This will create a visual studio solution(if you have visual studio). Launch that solution, and then choose to compile the project named tess_opt.