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ID: 26740, Using Direct3D and TCanvas GDI improve speed in Vista.

by Ray Vecchio Email: Anonymous

Using Direct3D and TCanvas' GDI calls to improve graphics performance in Vista.
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For C++Builder, Version 9.0  to 9.0 193 downloads
Copyright: No significant restrictions

Terms of use: Embarcadero use at your own risk disclaimer

Size: 8,331 bytes
Updated on Wed, 18 Mar 2009 09:23:15 GMT
Originally uploaded on Wed, 18 Mar 2009 09:23:14 GMT
SHA1 Hash: 310B1CB2E180A3FAC678C94B7694AD4C762C0407
MD5 Hash: 49599F87DBD72EDF67590F1DE12ED0D8

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Because of the modifications to the Vista Graphics subsystem the GDI calls are now routed along a different route to go to the Graphics driver, hence the GDI output show a significant drop in performance compare to Windows XP. Using the supplied control canvas one use Direct3D to get comparable performance to WinXP while still keeping the old TCanvas code.

This is beerware...

Roy Nelson


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