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Member Since 28 Mar 2013
Offline Last Active Mar 28 2013 10:55 AM

Topics I've Started

Strange Video Memory Increase

28 March 2013 - 06:37 AM

Hi Guys


I have a weird issue on opengl. I am rendering a lot of tris (millions) using vertex arrays.

Here is the issue.


If I load up the tris and display as shaded with a constant color, the video memory is showing around 600MB.


If I then change the color array values to be varied at different vertex, the memory usage increases to around 1GB.

If I then spin the model around, the memory usage slowly decreases to around 600MB (after a couple of minutes).


But, if I load up the model straight away with varied shading, the memory is only 600MB.


This is on linux, so is it a driver issue ? Or is there something more obvious I am neglecting.


I am using nvidia-smi to check the graphics memory usage.


Cheers in advance for any help !