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Recent Posts
- Local linear models and guided filtering – an alternative to bilateral filter September 22, 2019
- How (not) to test graphics algorithms August 14, 2019
- Checkerboard rendering, rotated anti-aliasing and grid frequencies May 14, 2018
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- Separable disk-like depth of field August 6, 2017
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Categories
Tag Archives: graphics programming
How (not) to test graphics algorithms
Intro Siggraph 2019 is sadly over, but as always I came back super inspired and grateful for meeting many friends. Conferences are mostly not about seeing the presentations – but about all the interesting and inspiring discussions, and one of … Continue reading
Posted in Code / Graphics
Tagged code design, code style, graphics, graphics programming, programming, siggraph, testing, tests
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Dithering part three – real world 2D quantization dithering
In previous two parts of this blog post mini-series I described basic uses mentioned blue noise definition, referenced/presented 2 techniques of generating blue noise and one of many general purpose high-frequency low-discrepancy sampling sequences. In this post, we will look … Continue reading
Posted in Code / Graphics
Tagged bayer, blue noise, dithering, fourier, graphics, graphics programming, interleaved gradient noise, mathematica, mathematics, maths, noise, programming, sampling
5 Comments
Dithering part two – golden ratio sequence, blue noise and highpass-and-remap
In previous part of the mini-series I covered dithering definition and how dithering changes error characteristics of simple 1D quantization and functions. In this part I will try to look at what blue noise is, but first wanted to have a … Continue reading
Posted in Code / Graphics
Tagged blue noise, dithering, golden ratio, graphics, graphics programming, low discrepancy, noise, programming
9 Comments
Dithering in games – mini series
This an opening post of mini blog post series about various uses of dithering for quantization and sampling in video games. It is something most of us use intuitively in every day work, so wanted to write down some of … Continue reading
Posted in Code / Graphics
Tagged blue noise, dithering, graphics, graphics programming, mathematica, noise, programming, sampling
5 Comments
Image dynamic range
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?
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
White balance and physically based rendering pipelines. Part 2 – practical problems.
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
5 Comments
