Deferred renderer

The final assignments for graphics programming 4 was normal mapping and projected shadow maps for spot lights. I wanted to make something more challenging so I decided that I would implement these assignments in a differed renderer. I also added Screen space reflections using multiple bilateral blurred mipmaps to simulate imperfect specular reflections (which take reflection distance in to account). For performance the screen space reflections are rendered at half the screen resolution.

Features:

• Materials with diffuse textures, normal maps, specular maps, and flag to enable SSR.
• Multiple spot lights.
• Soft shadows for all spot lights.
• Multiple point lights (with simple lens flares) and directional lights.
• Screen space local reflections both for perfect and imperfect specular materials.
• Fixes to hide edges in the screen space local reflections for missing data.