Tag Archives: postprocessing

Local linear models and guided filtering – an alternative to bilateral filter

Posted on September 22, 2019 by bartwronski

Intro In this blog post I am going to describe an alternative tool for the graphics and image processing programmers’ toolbox – guided filtering. Guided filtering is a really handy tool that I learned about from my coworkers, and I … Continue reading →

Posted in Code / Graphics | Tagged bilateral, graphics, image processing, machine learning, postprocessing, python, signal processing, ssao, upsampling | 2 Comments

Separable disk-like depth of field

Posted on August 6, 2017 by bartwronski

This is a short note accompanying shadertoy: https://www.shadertoy.com/view/lsBBWy . It is direct implementation of “Circularly symmetric convolution and lens blur” by Olli Niemitalo (no innovation on my side, just a toy implementation) and got inspired by Kleber Garcia’s Siggraph 2017 presentation “Circular … Continue reading →

Posted in Code / Graphics | Tagged bokeh, depth of field, dof, far cry 4, Gaussian, maths, photography, poisson, postprocessing, separable, witcher 2 | 2 Comments

Image dynamic range

Posted on September 1, 2016 by bartwronski

Intro This post is a second part of my mini-series about dynamic range in games. In this part I would like to talk a bit about dynamic range, contrast/gamma and viewing conditions. You can find the other post in the series here and … Continue reading →

Posted in Code / Graphics | Tagged dynamic range, graphics, graphics programming, HDR, mathematica, mathematics, postprocessing, tonemapping, visuals | 13 Comments

Localized tonemapping – is global exposure and global tonemapping operator enough for video games?

Posted on August 29, 2016 by bartwronski

In this blog post, I wanted to address something that I was thinking about for many years – since starting working on rendering in video games and with HDR workflows and having experience with various photographic techniques. For the title … Continue reading →

Posted in Code / Graphics, Travel / Photography | Tagged exposure, film, God of War, graphics, graphics programming, photography, photos, postprocessing, tonemapping | 15 Comments

Anamorphic lens flares and visual effects

Posted on March 9, 2015 by bartwronski

Introduction There are no visual effects that are more controversial than various lens and sensor effects. Lens flares, bloom, dirty lens, chromatic aberrations… All of those have their lovers and haters. Couple years ago many games used cheap pseudo HDR effect … Continue reading →

Posted in Code / Graphics | Tagged algorithms, anamorphic, bokeh, C#, cinematography, depth of field, film, flares, graphics, graphics programming, history, lens, movies, photography, postprocessing, programming | 16 Comments

Designing a next-generation post-effects pipeline

Posted on December 9, 2014 by bartwronski

Hey, it’s been a while since my last post. Today I will focus on topic of post-effects. Specifically, I wanted to talk about next-gen post process pipeline and redesign I worked on while being a part of Far Cry 4 rendering team. … Continue reading →

Posted in Code / Graphics | Tagged 1080p, algorithms, far cry 4, graphics, graphics programming, photography, PlayStation 4, postprocessing, programming, Xbox One | 6 Comments

CSharpRenderer Framework update

Posted on October 18, 2014 by bartwronski

In couple days I’m saying goodbye to my big desktop PC for several next weeks (relocation), so time to commit some stuff to my CSharpRenderer GitHub repository that was waiting for it for way too long. 🙂 Startup time optimizations … Continue reading →

Posted in Code / Graphics | Tagged .NET, C#, framework, graphics, graphics programming, postprocessing, programming, tools | 15 Comments