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Category Archives: Uncategorized
Journey to Lumen
Real-time GI has always been a holy grail of computer graphics. Over the years there were multiple approaches to this problem. Usually constraining problem domain by leveraging certain assumptions like static geometry, too coarse scene representation or tracing from coarse … Continue reading
Biome Painter: Populating Massive Worlds
There is a steady rise of popularity of open-world games and their domination of the bestseller list. Every new game raises the bar for the world size and complexity. Just looking at recent open world game trailers reveals their aim … Continue reading
Cloth Shading
Over the holiday break I had some time to play with interesting ideas presented during the last SIGGRAPH. One thing which caught my attention was new analytical cloth BRDF from Sony Pictures Imageworks [EK17], which they use in movie production. … Continue reading
Digital Dragons 2017
A few days ago I had a chance to attend and speak at Digital Dragons 2017 about rendering in Shadow Warrior 2. It was a total blast – very pro organized, had a honor to meet some incredible people and listen to … Continue reading
Job System and ParallelFor
Some time ago, while profiling our game, I noticed that we have a lot of thread locking and contention resulting from a single mutexed MPMC job queue processing a large amount of tiny jobs. It wasn’t possible to merge work … Continue reading
HDR Display – First Steps
Recently NVIDIA send us a nice HDR TV and we got a chance to checkout this new HDR display stuff in practice. It was a rather a fast implementation, as our game is shipping in less than 2 months from … Continue reading
Automatic Exposure
In games automatic exposure or eye adaptation is an algorithm for simulating eye reaction to temporal changes in lighting conditions and for selecting optimal exposure for a given scene and lighting conditions. The main challenge here is that optimal settings … Continue reading
ACES Filmic Tone Mapping Curve
Careful mapping of HDR values to LDR is an important part of a modern game rendering pipeline. One of the goals of our new renderer was to replace Reinhard‘s tone mapping curve with some kind of a filmic tone mapping … Continue reading
Analytical DFG Term for IBL
Image-based lighting is an important part of a physically based rendering. Unfortunately straightforward IBL implementation for more complicated lighting models than Phong requires a huge lookup table and isn’t practical for real time. Current state of the art approach is … Continue reading
Lightmapping in Anomaly 2 mobile
In 2013 Anomaly 2 mobile version (iOS/Android/Blackberry) by a small indie studio 11 Bit Studios was released. It was an interesting project as we needed to run heavy content from PC version on much weaker mobile platforms. I’d like to … Continue reading
Krzysztof Narkowicz 