GPU Pro 6

2

IV

Tile-Based

Omnidirectional Shadows

Hawar Doghramachi

2.1 Introduction

Rendering efficiently a massive amount of local light sources had already been

solved by methods such as tiled deferred shading [Andersson 09], tiled forward

shading [Billeter et al. 13], and clustered deferred and forward shading [Olsson

et al. 12]. However, generating appropriate shadows for a large number of light

sources in real time is still an ongoing topic. Since accurate shadows from direct

lights significantly improve the final image and give the viewer additional infor-

mation about the scene arrangement, their generation is an important part of

real-time rendering.

This chapter ...