Dirty Rectangles using Dx8, is it a good thing?

Graphics and GPU Programming Programming

Started by HexDump November 21, 2001 01:45 PM

2 comments, last by HexDump 22 years, 4 months ago

233

Author

November 21, 2001 01:45 PM

Could anybody pls explain me a good way to code a dirty rectangles engine using dx8?, this thing hurts :/. Thnx in advance.

masonium

118

November 21, 2001 11:00 PM

if you tell me what dirty rectangles are, I might be able to help you

Check out my raytracer at http://simp-raytracer.sourceforge.net. Download it at http://www.sourceforge.net/projects/simp-raytracer.

Metron

271

November 22, 2001 01:09 AM

Unless you are doing some 2D projections and you know where the area is that will change, it is hopeless to use dirty rects since you cannot be sure which parts are affected by the polygons that have been transformed.

Kind regards,
Metron

----------------------------------------http://www.sidema.be----------------------------------------

Anonymous

November 24, 2001 02:16 PM

DX8 does not like any assumptions on the content of the screen buffer. In fact you need to specify flags to preserve it if you want to. Also, you may have problems with double and triple buffering.