Problem 1 – using GL_NEAREST_MIPMAP_NEAREST

Use keyboard key '1'

Problem 1 – using GL_NEAREST_MIPMAP_LINEAR

Use keyboard key '2'

Problem 1 – using GL_LINEAR_MIPMAP_NEAREST

Use keyboard key '3'

Problem 1 – using GL_LINEAR_MIPMAP_LINEAR

Use keyboard key '4'

Problem 2 and 3 – Projective Shadow and Projective Texturing

Problem 4 – Depth Mapping