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April 2007 - Posts

Monday, April 30, 2007 8:29 AM

Evolved bitmap fonts

Within days of releasing our bitmap font maker utility , people are finding ways to improve it. Patrick created a Codeplex project that adds automatic outlining and shadowing filters. Ziggyware posted an article showing how to support more output formats
Posted by ShawnHargreaves | 1 Comments
Thursday, April 26, 2007 3:44 PM

Bitmap fonts in XNA

The XNA font system is most commonly used to extract data from TrueType fonts described in XML files, but it is also capable of grabbing character images directly from hand drawn bitmaps. TrueType fonts are convenient, but you may sometimes find yourself
Posted by ShawnHargreaves | 3 Comments
Thursday, April 26, 2007 2:17 PM

Unicode fonts in XNA

The XNA font system supports full Unicode character sets. The default XML font description includes only characters 0x20 to 0x7E, which corresponds to the "Basic Latin" Unicode range, but you can easily add other character regions by modifying the XML
Posted by ShawnHargreaves | 1 Comments
Monday, April 23, 2007 6:09 PM

Hysteresis

Games often have to make discrete decisions based on continuously varying analog input values. This happens a lot when making animation systems respond to controller inputs: if (speed > 0.7) ShowRunAnimation(); else if (speed > 0.1) ShowWalkAnimation();
Posted by ShawnHargreaves | 9 Comments
Thursday, April 19, 2007 10:37 AM

Profiling Thursday

Everyone is writing about how to use profiling tools today. Must be something in the water... SwampThingTom explains how to measure CPU performance to make sure you don't waste time optimizing parts of your program that weren't slow in the first place.
Posted by ShawnHargreaves | 0 Comments
Thursday, April 19, 2007 10:14 AM

BasicEffect.PreferPerPixelLighting

One of the new features in the next release of the XNA Framework is the addition of per-pixel lighting support in BasicEffect. In the original version of the framework, BasicEffect always evaluated its lighting per-vertex. That means for every vertex
Posted by ShawnHargreaves | 1 Comments
Monday, April 16, 2007 9:48 AM

Equalizing artwork

Great albums depend on more than just the individual notes. After the musicians finish recording their parts the producer takes over, adjusting volume levels and equalization settings, or maybe adding a bit of reverb to make everything sit well in the
Posted by ShawnHargreaves | 1 Comments
Thursday, April 12, 2007 10:12 AM

Specularity

BasicEffect uses the standard Blinn-Phong shading model, which combines both diffuse and specular light. Tweaking the diffuse part is pretty easy. Just set the BasicEffect.DiffuseColor property to the color of your object, or to white if your model is
Posted by ShawnHargreaves | 1 Comments
Monday, April 09, 2007 1:31 PM

The standard lighting rig

Question: what important things do photographers and cinematographers know about lighting? Question: why does BasicEffect support exactly three lights? Answer: the standard lighting rig! Many years ago photographers discovered that a single light was
Posted by ShawnHargreaves | 5 Comments
Wednesday, April 04, 2007 2:23 PM

A calculator called Eric

Please don't tell any of the guys here at Microsoft, but back in 2005 when I interviewed for my job on the XNA team, I had never actually written anything using .NET! After the interview but before I accepted the job, I decided I had better learn C#,
Posted by ShawnHargreaves | 5 Comments
Monday, April 02, 2007 2:51 PM

Any language you like (as long as it's at build time)

The XNA Framework only supports C#, at least if you want to run on Xbox or use the content pipeline. Or does it? It is true that our GSE IDE is only for C#. But content pipeline importers and processors are just regular managed assemblies, so you can
Posted by ShawnHargreaves | 0 Comments
 
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