Tag Archives: graphics

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 | 19 Comments

White balance and physically based rendering pipelines. Part 2 – practical problems.

Posted on October 14, 2015 by bartwronski

White balance and lighting conditions After this long introduction (be sure to check part one if you haven’t!), we can finally go to the problem that started whole idea for this post (as in my opinion it is unsolved problem – … Continue reading →

Posted in Code / Graphics, Travel / Photography | Tagged assassin's creed, color management, graphics, graphics programming, IBL, ideas, image based lighting, panoramas, PBR, photogrammetry, photography, physically-based shading, srgb, the witcher 2: assassins of kings, white balance, witcher 2 | 7 Comments

White balance and physically based rendering pipelines. Part 1 – introduction.

Posted on October 14, 2015 by bartwronski

This is part one of the whole article. Part two is here. In this two posts (started as one, but I had to split it to make it more… digestible) I’m going to talk a bit about the white balance. First … Continue reading →

Posted in Code / Graphics, Travel / Photography | Tagged color management, digital cameras, film, graphics, graphics programming, PBR, photography, physically-based shading, rendering, srgb, white balance | 3 Comments

Fixing screen-space deferred decals

Posted on March 12, 2015 by bartwronski

Screen-space deferred decals are a very popular technique. There were so many presentations and blog posts about it that I will just list couple of them (just a first google search results page to be honest…) in no particular order: … Continue reading →

Posted in Code / Graphics | Tagged algorithms, decal, decals, deferred, graphics, graphics programming, rendering bugs, screen-space, the witcher 2: assassins of kings | 5 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

Processing scanned/DSLR photos of film negatives in Lightroom

Posted on February 19, 2015 by bartwronski

The topic I wanted to cover in this post is non-destructive workflow for “developing” photographed or scanned negatives – in this case B&W film. Why even bother about film? Because I still love analog photos as a hobby. 🙂 I wrote … Continue reading →

Posted in Travel / Photography | Tagged 35mm, adobe, analog, film, graphics, Lightroom, medium format, photography, photoshop, scanning, Voigtlander | 5 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, bokeh, depth of field, far cry 4, graphics, graphics programming, photography, PlayStation 4, postprocessing, programming, tonemapping, 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

New debugging options in CSharpRenderer framework

Posted on September 14, 2014 by bartwronski

Hi, minor update to my C#/.NET graphics rendering framework / playground got just submitted to GitHub. I implemented following new features: Surface debugging snapshots One of commentators asked me how to easily display for debug SSAO buffer – I had no easy … Continue reading →

Posted in Code / Graphics | Tagged .NET, C#, framework, github, graphics, graphics programming | 4 Comments

Major C#/.NET graphics framework update + volumetric fog code!

Posted on August 20, 2014 by bartwronski

As I already promised too many times, here comes major CSharpRenderer framework update! As always, all code available on GitHub. Note that the goal is still the same – not to write most beautiful or fast code, but to provide a … Continue reading →

Posted in Code / Graphics | Tagged .NET, algorithms, C#, graphics, graphics programming, postprocessing, supersampling, temporal, temporal supersampling | 18 Comments

Hair rendering trick(s)

Posted on July 20, 2014 by bartwronski

I didn’t really plan to write this post as I’m quite busy preparing for Siggraph and enjoying awesome Montreal summer, but after 3 similar discussion with friends developers I realized that the simple hair rendering trick I used during the … Continue reading →

Posted in Code / Graphics | Tagged algorithms, antialiasing, graphics, graphics programming, the witcher 2: assassins of kings, witcher 2 | 7 Comments

C#/.NET graphics framework on GitHub + updates

Posted on June 8, 2014 by bartwronski

As I promised I posted my C#/.NET graphics framework (more about it and motivation behind it here) on GitHub: This is my first GitHub submit ever and my first experience with Git, so there is possibility I didn’t do something properly … Continue reading →

Posted in Code / Graphics | Tagged .NET, algorithms, antialiasing, C#, graphics, graphics programming | Leave a comment

Digital Dragons 2014 slides

Posted on May 9, 2014 by bartwronski

This Friday I gave a talk on Digital Dragons 2014. It was a presentation with tons of new, unpublished content and details about our: Global Illumination solution – full description of baking process, storing data in 2D textures and runtime application Temporal … Continue reading →

Posted in Code / Graphics | Tagged assassin's creed, graphics, graphics programming, PlayStation 4, postprocessing, programming, Xbox One | 2 Comments

Temporal supersampling pt. 2 – SSAO demonstration

Posted on April 27, 2014 by bartwronski

This weekend I’ve been working on my Digital Dragons 2014 presentation (a great Polish game developers conference I was invited to – if you will be somewhere around central Europe early May be sure to check it out) and finally got … Continue reading →

Posted in Code / Graphics | Tagged algorithms, antialiasing, assassin's creed, graphics, graphics programming, next-gen, PlayStation 4, postprocessing, stochastic, supersampling, temporal, temporal supersampling, Xbox One | 8 Comments

C#/.NET graphics framework

Posted on April 10, 2014 by bartwronski

In my previous post about bokeh I promised that I will write a bit more about my simple C# graphics framework I use at home for prototyping various DX11 graphics effects. You can download its early version with demonstration of bokeh … Continue reading →

Posted in Code / Graphics | Tagged .NET, C#, framework, graphics, graphics programming, programming, shaders | 13 Comments

Bokeh depth of field – going insane! part 1

Posted on April 7, 2014 by bartwronski

Recently I was working on console version depth of field suitable for gameplay – so simple, high quality effect, running with a decent performance on all target platforms and not eating big percent of budget. There are tons of publications about … Continue reading →

Posted in Code / Graphics | Tagged bokeh, depth of field, dof, graphics, graphics programming, postprocessing, programming, the witcher 2: assassins of kings, witcher 2 | 25 Comments

GCN – two ways of latency hiding and wave occupancy

Posted on March 27, 2014 by bartwronski

I wanted to do another follow-up post to my GDC presentation, you can grab its slides here. I talked for quite long about shader occupancy concept, which is extremely important and allows to do some memory latency hiding. The question … Continue reading →

Posted in Code / Graphics | Tagged assembler, GCN, GDC, GDC 2014, graphics, graphics programming, PlayStation 4, programming, Sony, Xbox One | 11 Comments

Temporal supersampling and antialiasing

Posted on March 15, 2014 by bartwronski

Aliasing problem Before I address temporal supersampling, just a quick reminder on what aliasing is. Aliasing is a problem that is very well defined in signal theory. According to the general sampling theorem we need to have our signal spectrum … Continue reading →

Posted in Code / Graphics | Tagged algorithms, antialiasing, assassin's creed, graphics, graphics programming, PlayStation 4, postprocessing, programming, stochastic, supersampling, temporal, temporal supersampling, Xbox One | 22 Comments

My upcoming GDC 2014 presentation

Posted on March 9, 2014 by bartwronski

Ok, so GDC 2014 is coming up next week, are you excited? Because I am. 🙂 Thanks to the GDC Committee I will be giving a talk this year http://schedule.gdconf.com/session-id/826051 named “Assassin’s Creed IV – Road to Next-Gen Graphics”. As … Continue reading →

Posted in Code / Graphics | Tagged assassin's creed, GCN, GDC, GDC 2014, graphics, graphics programming, Microsoft, next-gen, PlayStation 4, Sony, Xbox One | Leave a comment

Why big game studios (usually) use single main 3d software environment?

Posted on February 25, 2014 by bartwronski

Couple days ago a friend from smaller gamedev company asked me very interesting question – why while smaller companies allow freelancers some freedom choosing 3d software, big and AAA companies usually force people to learn and use one 3d environment? … Continue reading →

Posted in Code / Graphics | Tagged 3d software, 3ds max, blender, graphics, maya, photoshop, pipeline, technical art, tools | Leave a comment