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JohannesM

OpenGL Improving DirectX (or OpenGL) Response Times

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Because of the depth of graphics pipelines these days, sometimes 30FPS can feel very sluggish while in other scenarios, 20FPS can feel reasonably snappy. I was wondering if anyone has any insight into how to improve response times (even at the cost of frame rate) in graphics intensive applications. Is the a way to force the graphics card to not have so many frames on the go at once (just reduce the number). Or is there some best practices to avoid this?

Any suggestions or discussion is welcome.

PS: As an example of these response time differences, try the original Crysis. I played the game through at 15-20FPS and it wasn't that bad. I have played other games that feel worse at double the frame rate.

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D3D10/D3D11 let you explictly query the number of frames queued up by the display driver, through IDXGIDevice1::GetMaximumFrameLatency and IDXGIDevice1::SetMaximumFrameLatency. No idea about OpenGL.

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Thanks. I'll definitely have to play with that. Do you have any experience with the effects of changing that?

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