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"category:/floating point math"


Title and summary Date/time
1
Visual Studio's lack of C99 compliance
I was reintroduced to this old chestnut the other evening. error C2146: syntax error : missing ';' before identifier 'bar' error C4430: missing type specifier - int assumed. Note: C++ does not support default-int Having recently kicked off another ...
18-May-2014
22:17:00
2
How to get the best out of PVRTC for iOS
In case you didn't know Apple's mobile products use a chipset based on PowerVR technology. This technology had a brief period of being available on the desktop but it was never performant enough to make real headway on the desktop. It was also used by ...
02-Apr-2012
11:52:00
3
Unity3D iPhone Player and JIRA Connect Integration
We've been using JIRA internally for our project management and bug tracking for a couple of years now and we've found it to be excellent. Recently Atlassian (the developers of JIRA) released a JIRA Connect library for the iPad/iPhone family. If you are ...
08-Dec-2011
19:57:00
4
Unity 3D (Pro): View matrix (separately) for CG shaders
As Unity's shader support is largely based on Open GL, there isn't, by default design, access to separate model and view matrices in shader code. Occasionally you might want access to this and to use it you'll need to pass this information in yourself. ...
20-Oct-2011
09:06:00
5
Xcode 3.2.6 and OSX Lion (10.7) - Make it install
Today I enthusiastically installed OSX Lion on my development system. I was probably stupidly naive to think it would be a straightforward upgrade. Attempting to install Xcode 3.2.6, the version I currently prefer, it seemed to silently fail. I wasn't ...
04-Aug-2011
23:26:00
6
Xcode: iPhone or iPad application code sign error
This morning on a re-imaged OSX machine I attempted to compile an ipad application and I was rewarded with the error below.codesign error: code signing identity 'iphone developer' does not match any code-signing certificate in your keychain. once added to ...
20-Jun-2011
23:00:00
7
Eets: Hunger it's Emotional - Released for Macintosh OSX
Somewhat belatedly we're pleased to announce the release of Eets: Hunger it's Emotional for OSX! It was released on Steam last December, and you can check it out hereWhew. That was quite an effort for a small team like ours. It was a labour of love. While ...
27-Jan-2011
04:50:00
8
Game replay techniques and the importance of floating point determinism
Working our way towards release we're currently going through a heavy bugfixing phase on the Macintosh version of Eets. One particularly interesting bug was causing incorrect level replays and the official solution video (not really videos but ingame ...
31-Aug-2010
04:59:00
9
Unity 3D: A rough and ready computation of normals - useful for procedural meshes
Here is a rough and ready method to compute a meshes' vertex normals knowing the vertices and the indicies of your mesh. List[] normalBuffer= new List[NumVerts]; for(int vl = 0; vl normalBuffer[vl] = new List(); } for( int i = 0; i { // ...
23-Apr-2010
01:35:00
10
Derivation of the Perspective Matrix, Part 1
Preface I have been wanting for some time to discuss in detail the Perspective Matrix. Not only do I find it an interesting topic but I have found numerous times during my career that it has helped to understand the Perspective Matrix and the math behind ...
04-Dec-2009
17:56:00