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[SlimDx] [DX9] ToFile and ToStream slower with Release runtime

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Hi,

I'm doing some painting on a video surface and want to save it to a new video. This runs fine on my development computer, but when trying it on another computer the performance was quite awful.
After a bit of searching I found that the big difference is that I'm using the directx debug runtime when developing.

I tested in the Direct3D9 samples project minitri, and the same thing happens there with the following piece of code:


Surface surface = device.GetBackBuffer(0, 0);
DataStream stream = Surface.ToStream(surface, ImageFileFormat.Jpg);
stream.Dispose();
surface.Dispose();

When using the release runtime it takes around ~100ms longer than when using the debug runtime. Same thing when writing to a file with ToFile() instead.
I have the June 2010 DirectX SDK and the June 2010 SlimDX release.

/Martin

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