[vtkusers] error with LastRenderTimeInSeconds and OpenGL

[Doug Gehringer]

I'm seeing cases where GetLastRenderTimeInSeconds() returns a value which is 
less than the actual time to render the frame.  The render time is measured 
after the last OpenGL command has returned without a call to glFinish(). As a 
result some of the rendering time is missed.  In this case 
GetLastRenderTimeInSeconds() returns 60ms when the actual frame time is 240ms.

To fix this there would need to be a call to glFinish() at the end of 
vtkOpenGLRenderer::DeviceRender().

How do bugs fixes get "blessed" and entered into the mainline VTK source?


Doug

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Doug Gehringer     x45938   Ph: 503-626-5938
FastApps Group     Sun Microsystems Inc.
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