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GeneralRe: Darwin came a-callingmemberdjj5512 Feb '13 - 3:07 
GeneralRe: Darwin came a-callingmemberTesting 1 2 ... uh... 7?12 Feb '13 - 4:17 
GeneralRe: Darwin came a-callingmemberryanb3112 Feb '13 - 4:36 
GeneralRe: Darwin came a-callingmemberChris Quinn12 Feb '13 - 4:18 
GeneralRe: Darwin came a-callingmemberRajesh R Subramanian12 Feb '13 - 4:50 
GeneralRe: Darwin came a-callingmemberMark_Wallace12 Feb '13 - 19:49 
NewsWinRT [C++/Cx to C#] performancememberSuper Lloyd12 Feb '13 - 1:56 
Hi Folks,
Just to share some informal finding...
I'm writing (slowwwwwly) a DirectX WinRT binding: http://directwinrt.codeplex.com/[^]
 
I just implemented mouse picking (got to blog about it real soon!! ^^)
 
Anyway, I did some measurements...
In Sample1 I update 10.000 points in C#. It used to be a C++/CX IList/IVector.
Now I'm doing it in C# with pointers.
Updating 10K points in C# through C++/Cx took about 20.000 ticks
Updating it through pure C# (and pointers ) only took about 3.000 ticks.
Further tweaks were caching the pointer value (there was a method call to get the pointer) and avoid some casting reduced the time to 1.300 ticks.
 
Morale of the story: I was wondering about the performance of calling C++/Cx from C#?
Now I know: for intensive fine grained call into C++, it's still damn expensive!...
My programming get away... The Blog...
DirectX for WinRT/C# since 2013!
Taking over the world since 1371!
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GeneralRe: WinRT [C++/Cx to C#] performancememberDan Neely12 Feb '13 - 2:23 
GeneralRe: WinRT [C++/Cx to C#] performancememberSuper Lloyd12 Feb '13 - 2:38 
GeneralRe: WinRT [C++/Cx to C#] performancememberRama Krishna Vavilala12 Feb '13 - 3:04 
GeneralRe: WinRT [C++/Cx to C#] performancesitebuilderNish Sivakumar12 Feb '13 - 3:18 
GeneralRe: WinRT [C++/Cx to C#] performancememberBillWoodruff14 Feb '13 - 20:04 
GeneralRe: WinRT [C++/Cx to C#] performancememberSuper Lloyd14 Feb '13 - 22:21 
General"Bing is a great product"memberEdo Tzumer12 Feb '13 - 1:22 
GeneralRe: "Bing is a great product"memberNemanja Trifunovic12 Feb '13 - 1:33 
QuestionRe: "Bing is a great product"memberMario Majčica12 Feb '13 - 1:39 
AnswerRe: "Bing is a great product"memberS Houghtelin12 Feb '13 - 1:45 
JokeRe: "Bing is a great product"memberMario Majčica12 Feb '13 - 1:47 
GeneralRe: "Bing is a great product"memberS Houghtelin12 Feb '13 - 1:52 
GeneralRe: "Bing is a great product"memberMario Majčica12 Feb '13 - 1:59 
GeneralRe: "Bing is a great product"memberS Houghtelin12 Feb '13 - 2:14 
AnswerRe: "Bing is a great product"memberMario Majčica12 Feb '13 - 3:27 
GeneralRe: "Bing is a great product"memberMark_Wallace12 Feb '13 - 19:55 
AnswerRe: "Bing is a great product"memberMaximilien12 Feb '13 - 1:46 
AnswerRe: "Bing is a great product"mentorKeith Barrow12 Feb '13 - 1:56 
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