CODEWITHSUNDEEP
javaopengl-esopengl-es-2.0
Nate-Wilkins
Nate-Wilkins

Reputation: 5492

OpenGL ES 2.0 Measure Performance (FPS) (Frame Duration)

When I was reading up on measuring Frames Per Second in OpenGL I came across this:

How to measure true FPS performance of OpenGL ES?

What I got from it was that you can get the FPS but its not a true indication of performance, and that Frame Duration would be a better choice. Are their any other ways to measure rendering performances for OpenGL? And if so why are they better (or worse) than the last?

I'm not sure I understood why FPS is not a good indication for performance too.

Upvotes: 1

Views: 920

Answers (1)

Tim
Tim

Reputation: 35933

It's not so much that it's not a 'true indication of performance', it's just that if you don't know what you're talking about it can be easily misleading.

If you really want to target a certain FPS, then there's nothing wrong with looking at it as a metric, but you just have to remember that it's not a linear measure of performance.

For example, if your FPS goes from 30 to 20, then that's a pretty significant decrease in frame performance time (33 ms to 50 ms)

However if your FPS goes from 2000 to 400, that's a miniscule difference in real time (only 2ms difference).

Using FPS is discouraged because then you get new developers worked up in a panic saying "my FPS decreased by 1600, what did I do wrong??"

Upvotes: 3

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