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Hari Subramaniam
Hari Subramaniam

Reputation: 1876

WPF and frame rate

We know that the default frame rate for WPF is 60 frames per second. And in cases of extensive animations, their frame rates tends to increase the CPU consumption.

http://blogs.msdn.com/b/henryh/archive/2006/08/23/719568.aspx

But why is the CPU being consumed, shouldnt the GPU actually be used here because WPF takes advantage of graphics card where available isnt? Can anyone please help here?

Upvotes: 3

Views: 2518

Answers (1)

Klaus78
Klaus78

Reputation: 11926

I expect WPF to use the graphics resources when available. However animations can be computationally expensive and I don't wonder if the CPU is being involved.

What value you have for RenderCapability.Tier?

(Remember that you get the value by RenderCapability.Tier >> 16)

The features of the graphics hardware determine the rendering capability of a WPF application.

From msdn Graphics Rendering Tiers:

a rendering tier defines a level of graphics hardware capability and performance for a device that runs a WPF application. The WPF system defines three rendering tiers:

Rendering Tier 0 No graphics hardware acceleration. All graphics features use software acceleration. The DirectX version level is less than version 9.0.

Rendering Tier 1 Some graphics features use graphics hardware acceleration. The DirectX version level is greater than or equal to version 9.0.

Rendering Tier 2 Most graphics features use graphics hardware acceleration. The DirectX version level is greater than or equal to version 9.0.

Upvotes: 3

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