Directional occlusion via multi-irradiance mapping

Current real-time ambient or directional occlusion approximation methods are either screen space or object space based. Both methods suffer from drawbacks such as time incoherence and occlusion popping for screen space methods or loss of detailed ...

Irradiance normal mapping is a method to combine two popular techniques, light mapping and normal mapping, and is used in games such as Half-Life 2 or Halo 3. This combination allows using low-resolution light caching on surfaces with only a few ...

This paper presents a per-pixel ray tracing algorithm with dynamic lighting of surfaces in real-time on the GPU. First, we propose a method for increased precision of the critical ray-height field intersection and adaptive height field sampling. We ...