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DarkBASIC Professional Discussion / Weird result! Skipping secondary render to boost speed.

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mr Handy
18
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Joined: 7th Sep 2007
Location: out of TGC
Posted: 28th Aug 2014 00:46
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Hello, fellows!

I have a heavy 3D secondary render (picture in picture) which is not needed to be rendered on every loop, so I made a simple odd/even check.

Result:
Everything on = speed (fps) ~100%
PiP for every second loop = speed ~150%
PiP for every third loop = speed ~75%

???

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Ortu
DBPro Master
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Location: Austin, TX
Posted: 28th Aug 2014 00:58
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Hard to say really without seeing the code. Are the speed differences reproduceable across multiple compiles and maybe a reboot? Could something else running or not running in the background be affecting it?

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mr Handy
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Posted: 28th Aug 2014 01:02 Edited at: 28th Aug 2014 01:30
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I will try to write a quck demo that will recreate the issue.

Update: Quick demo gave me the boost according to this diagram:


Not so efficient boost at 1/10.

But my "big" code may contain logical error that do this fps loss at 1/3. Meh.

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Libervurto
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Location: On Toast
Posted: 28th Aug 2014 13:59
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Are you doing something like,

if thisLoop && 3 ...

Looks like you have a pretty reasonable curve there. Now can you do the calculus to work out the best rate?

Formerly OBese87.
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mr Handy
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Joined: 7th Sep 2007
Location: out of TGC
Posted: 28th Aug 2014 18:06
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So skipping works fine, there is something wrong with my code.

I think I should make a benchmark from my code with dynamic loop skipping to get best speed-vs-visuals score.

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