I finished the chapter 7 of the book 3D Game Programming with DirectX 11 that discussed about lighting model and different light types: directional light, point light and spot light.
ex. 1. asked to modify light colors of the chapters lighting demo.
ex.2. asked to modify the specular power (p) of the materials in the lighting demo trying different values for it.
land and waves material with p = 256 and p = 64 and p = 8
ex.3. asked to implement toon shading by modifying diffuse and specular factions.
ex.4 asked to implement keys to to increase and decrease the angle of spotlight cone.
I implemented it by modifying the spot exponent in the spotfactor like this
if (GetAsyncKeyState('A') & 0x8000) mSpotLight.Spot += 10.0f*dt; if (GetAsyncKeyState('S') & 0x8000) mSpotLight.Spot -= 10.0f*dt;next chapter texturing, now we are getting somewhere !