Monthly Archives: April 2015

Screen Space Ambient Occlusion 8

 in OpenGL by

Previously we updated our BRDF to use Physically Based Shading (PBS) and gave the ambient term an overhaul with Importance Sampled Image Based Lighting (IBL). These changes alone greatly assisted in making our real-time renderer near-realistic (relative to real-time rendering). The advanced ambient term has one issue though – the ambient contribution […]

Physically Based Shading and Image Based Lighting 12

 in OpenGL  tagged image based lighting / importance sampling / opengl / physically based / rendering / shading by

Light is complicated, and we really don’t have a full equation that accurately models light in the real world. This might sound confusing because of all the recent strides in CG and visual technology. Well, it’s all approximate – it’s just that we select functions which approximate really well. The unfortunate truth is: There is no […]