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Old 13th July 2016, 05:51   #38684  |  Link
Ironclad
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Join Date: Jun 2016
Posts: 7
Quote:
Originally Posted by nevcairiel View Post
Having to copy the image in high-bit-depth from the GPU to system memory and back after processing will take a significant part of the performance, so don't expect too much free magic.
Oh so more so than the GPU needing to process an additional 36 or more frames per second, it's the lag caused by storing in system memory that's slowing everything down. I'm probably oversimplifying it but 640x480 frames->1440x1080 frames should increase the traffic through system memory by like 5 both ways compared to the current method.

Even if the GPU is doing 2.5-6 times as much work, that's not comparable to the difference in speed between RAM and VRAM.
https://en.wikipedia.org/wiki/List_o...-access_memory

Oh of course that's why already high framerate videos are no issue! The only solution would be if the interpolation is done entirely by a GPU. I guess using DDR4 will help somewhat. I'll see what the SVP developers think but I'm guessing it would require completely rewriting the filter.

Last edited by Ironclad; 13th July 2016 at 07:41.
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