dmadev.com

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Quadrilaterals and brown trousers | I'm doing it wrong

https://imdoingitwrong.wordpress.com/2011/04/23/quadrilaterals-and-brown-trousers

I'm doing it wrong. More often than not. Quadrilaterals and brown trousers. April 23, 2011. My favourite moment from the game occurs around a third of the way into St Francis’ Folly. Where you run up some stairs, turn a corner and are confronted by this:. You can’t see the floor! I very nearly soiled myself as a young lad when I saw that; it made such an impression on me that I still to this day dig out my copy of Tomb Raider every couple of years and play it through. Perhaps it’s a rock? It’s inte...

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Realtime global illumination | I'm doing it wrong

https://imdoingitwrong.wordpress.com/2011/04/02/realtime-global-illumination

I'm doing it wrong. More often than not. April 2, 2011. I’ve had an idea floating around in my head for several months now, but evening classes, a hard drive failure, then a GPU failure prevented me from doing much about it until this weekend. First, a couple of screenshots of what I’ll be talking about. Cornell box, I choose you! The basic idea is simple and is split into two phases. A one-time scene compilation phase:. Split all surfaces in the scene into roughly equal sized patches. Is the vector from.

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Why Reinhard desaturates my blacks | I'm doing it wrong

https://imdoingitwrong.wordpress.com/2010/08/19/why-reinhard-desaturates-my-blacks-3

I'm doing it wrong. More often than not. Why Reinhard desaturates my blacks. August 19, 2010. I’m doing it wrong. Out of the door, I’ve been catching up on this year’s GDC presentations. One that was of particular interest to me was John Hable’s. Uncharted 2 HDR Lighting talk because I think we’re all in agreement about how awesome the game looks. That led me to checking out his blog and his discussions of various tone mapping operators. And are in linear RGB space. That’s no good at all! Actually it doe...

dominichamon.com

personal | Dominic Hamon

http://dominichamon.com/blog/category/personal

Life is like a grapefruit. Posts by me, about me, or things i like. The Rise and Fall of Ziggy Stardust. Three months ago, we adopted Jedi who was promptly renamed Ziggy. Here he is, on the day we adopted him, while we were filling out the paperwork. We were told he was probably two years old. He came to us and found rather too much love in the shape of the #geekling who struggled to adjust her level of affection from Labrador to fragile Terrier mix. But still, it was love. Update (2015.05.29):. Six mont...

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4-bit random numbers | I'm doing it wrong

https://imdoingitwrong.wordpress.com/2011/01/20/4-bit-random-numbers

I'm doing it wrong. More often than not. January 20, 2011. While I accept that a toy 4-bit microprocessor probably isn’t a subject that warrant multiple posts, I’m unable to resist. Apologies. After playing with my GMC-4 for a couple of days, the initial novelty of hand assembling programs had well and truly worn off, so I turned to the assembler. Available on the web. After a couple of minutes of use though, it was obvious that a. Wasn’t at all what I wanted. Data memory in DarkSeaGreen and PaleGreen.

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Light attenuation | I'm doing it wrong

https://imdoingitwrong.wordpress.com/2011/01/31/light-attenuation

I'm doing it wrong. More often than not. January 31, 2011. The canonical equation for point light attenuation goes something like this:. D = distance between the light and the surface being shaded. Kc = constant attenuation factor. Kl = linear attenuation factor. Kq = quadratic attenuation factor. Since I first read about light attenuation in the Red Book. After looking at the results from a series of tests, it became apparent that the attenuation of a spherical light can be modeled as:. Below are a coup...

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Improved light attenuation | I'm doing it wrong

https://imdoingitwrong.wordpress.com/2011/02/10/improved-light-attenuation

I'm doing it wrong. More often than not. February 10, 2011. In my previous post. I talked about the attenuation curve for a spherical light source:. I had suggested applying a scale and bias to the result in order to limit a light’s influence, which is a serviceable solution, but far from ideal. Unfortunately, applying such a bias causes the gradient of the curve to become non-zero at limit of the light’s influence. Here’s the attenuation curve for a light of radius 1.0:. That worked well, the resulting ...

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Spherical harmonics, WTF? | I'm doing it wrong

https://imdoingitwrong.wordpress.com/2011/04/14/spherical-harmonics-wtf

I'm doing it wrong. More often than not. Spherical harmonics, WTF? April 14, 2011. I never really “got” spherical harmonics, there was something about them that just didn’t click for me. A little late to the party, I spent a few evenings recently reading over all the introductory papers I could find. Several times. This post is mostly just a brain dump, made in an effort to get everything straighted out in my head. I did stumble across a few curiosities though…. Are the associated Legendre polynomials.