July 30, 2005

Added new article Understanding the Dot Product as first of a set of introductory 3D math topics.

July 26, 2005

Took Smalltalk MT forum off-line due to our inability to control continuous abuse by spammers.  We are currently exploring 3rd party solutions to host a new forum for Smalltalk MT support.

July 1, 2005

Added new article Linearized Depth using Vertex Shaders, which details a method for generating linear z-buffer depth values with a simple vertex shader.

July 15, 2004

Added new article Introduction to Effect Files, hopefully to be the first in a series of articles delving into effects and HLSL shaders.

July 9, 2004

I'm back from four weeks on-site in Houston, and ready to get back to this site as promised.  Hmmm, where oh where should I start?

June 13, 2004

	Thanks to John Lykins for reporting an error in the article Locating an Application CD.  The text of the article mistakenly specified a call to GetLogicalDrives() where GetDriveType() was intended (this was correctly implemented in the sample code, however).  This has been corrected.
	As is apparent by the preceding gap in this journal, I've been pulled away from the ongoing development of this site for some time.  Fortunately, that is finally changing... I'm going to be out of town at a customer site for a couple of weeks, after which I have new content planned for this site, as well as updating existing content to newer APIs.  Stay tuned....

April 11, 2003

	Added new category for DirectX 9 Graphics specific articles.
	Thanks to the feedback of one of our readers, found an issue that was plaguing those using the code in Scaling and Centering of ID3DXMesh Geometry.  Due to changes in the D3DXComputeBoundingSphere() function in DirectX 9 the published code did not function properly.  I have provided a new version of the article for DirectX 9.

January 28, 2003

Added new section in FAQ pages for DirectX 9 Graphics It's going to take a while, particularly with my current schedule, to get some real meat to this section.  If anyone has recommendations regarding issues to cover here, feel free to e-mail me at rdunlop@mvps.org

January 22, 2003

	Added new article, FPS Versus Frame Time
	Updated article Scaling and Centering of ID3DXMesh Geometry to fix apparent error in ScaleMesh() function.  An offset was being applied after scaling, which should have been applied prior to scaling the mesh vertices.

October 26, 2002

Added new article, Scaling and Centering of ID3DXMesh Geometry

June 1, 2002

Added new article, Shader Transforms with Non-Transposed Matrices

May 21, 2002

	Created new area called "The Scrapyard", where our readers can access various works in process.
	Added demo and partial article  Synthesizing Patches using Vertex Shaders to The Scrapyard.
	Added additional sample programs with source code to The Scrapyard: Bouncing Balls Wood Synthesis Alpha Sort Dependency Sample Partial 3D UI framework and demo for DX 8.x

May 20, 2002

Added Eric DeBrosse's The DirectX Cool Fool! MVP web site to the links.

May 3, 2002

Added demo application to article A Simple Blit Function for DirectX 8, demonstrating the technique shown in the article by implementing a simple image viewer.

April 27, 2002

Added new article, Batching of Polygons with a Vertex Cache

April 11, 2002

Posted first version of DirectX Graphics FAQ for the microsoft.public.win32.programmer.directx.graphics newsgroup.  The latest version can be viewed here, including interim changes made since the last posting.

March 8, 2002

Newsletter Distributed.  See archive copy here.

March 7, 2002

Added new Article, Stencil Based Screen Wipes

March 1, 2002

Added new Article, Rendering 3D Scenes to Large Image Formats

February 25, 2002

Added new article, Saving a Screen Shot in Direct3D

February 24, 2002

Back from business trip, took a few more days than expected.  I should be caught up with support responses in the next couple days, then will be working on new articles and site enhancements.

February 13, 2002

Newsletter distributed.  See archive copy here.

February 9, 2002

I will be traveling on business until the 19th, so my apologies in advance if I am slow getting backed to e-mailed requests.

February 1, 2002

We are pleased to announce that Microsoft has awarded two new MVPs for DirectX, recognizing the on-line work of Rich Thompson and Eric DeBrosse!

January 23, 2002

Added Texture Based Clipping Demo, with article and downloadable sample application and source code.

January 21, 2002

Updated Links page.

January 20, 2002

	Updated home page for better visibility of available options
	Began adding links in each Technical Article to related articles on this site that may be of interest to the reader.  See an Example of this feature.

December 13, 2001

Newsletter distributed.  See archive copy here.

December 11, 2001

	Added Introduction to Catmull-Rom Splines, article with demo application and source code.
	Updates to DirectX FAQs

December 8, 2001

Added demo application and source code for Improved Ray Picking.

December 5, 2001

	Updated Links page.
	Updates to DirectX FAQs

November 25, 2001

	To my alarm, I located numerous broken links on the page that I was previously unaware of.  These were caused by internal links that pointed to my local hard drive, so they were not apparent when reviewing the page locally.  If you've had problems with broken links here in the past that prevented you from viewing content, be sure to try them again.
	If you run into broken links on the current page, please report them through our feedback page or e-mail me at rdunlop@mvps.org.

November 23, 2001

Added section for Smalltalk MT, a compiled and optimized version of the Smalltalk object oriented language with support for DirectX.  Download the trial version today!

November 15, 2001

Updates to DirectX FAQs

November 14, 2001

Updated Rendering Full Screen Images from Textures to utilize the new D3DXGetImageInfoFromFileInMemory function provided in the DirectX 8.1 SDK.

November 12, 2001

	Added Services page and case study of application development for Paulin Research Group.
	Updates to Dx8 Graphics FAQ and Book Support sections.

November 10, 2001

DirectX 8.1 SDK available for download from Microsoft http://msdn.microsoft.com/directx/

November 7, 2001

	Updates to Dx8 Graphics FAQ.
	Just got back from 10 days on the road, so if you didn't get a response feel free to send a reminder.

September 21, 2001

Added article Using the ID3DXMesh Class.

September 19, 2001

Added article Creating Subsets in ID3DXMesh.

September 15, 2001

Just returned from 3 weeks of business travel.  If you sent messages to me during this time and did not get a response, feel free to write me again, as my box got rather full while I was abroad.

September 3, 2001

	Added article Color Keying in DirectX 8 Graphics.
	Updated A Simple Blit Function for Direct3D to include implementation note regarding turning off lighting for rendering pre-lit vertices.

August 19 - September 1, 2001

In Houston, Texas on business.  It will take a while to catch up on mail during this time, e-mail me again if I did not get back to you.

August 10, 2001

	Added Tech Logic video card capabilities page to Links.
	Updated DirectX 8 Graphics FAQ.

August 7, 2001

Added article on rendering to multiple windows under DX 8.

July 16-18, 2001

	Microsoft holds Meltdown 2001 in Seattle, Washington.
	Robert Dunlop assisted in presentation of Smalltalk MT.

July 15, 2001

Started X-Zone News page to track updates to this site.