A performance issue with Unloved

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Blue Shadow
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A performance issue with Unloved

Post by Blue Shadow »

GZDoom 2.1.pre-188-g1a8da51
Spoiler: Console Log
This is most likely due to my outdated drivers which I still can't update. But, here is the issue, anyways:

In this flooded area of map05 of Unloved, I'm getting performance spikes at certain points and looking at cerain angles if I had dynamic lights on; like the framerate suddenly drops from smooth 60fps to something in the single digits. One specific spot is here*.

I don't know what's special about this area that I get this. The performance is generally smooth in all other areas of the game, areas that are far bigger and more complex, which use more dynamic lights than that area. It's only this part where I encountered a performace issue.


* The milliseconds counter thing can go up to the two, there or even four hundreds.
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Graf Zahl
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Re: A performance issue with Unloved

Post by Graf Zahl »

It's not your drivers. I get a problem there, too, when running with -gl3. There must be a bug in the light data collection that gets triggered by that particular spot.
Finding that will be an entirely different matter, though...

It works fine in the GL4.4 path.
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Graf Zahl
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Posts: 7148
Joined: Wed Jul 20, 2005 9:48
Location: Germany

Re: A performance issue with Unloved

Post by Graf Zahl »

Found it. There was a discrepancy between stuff that got processed in the lighting pass and the render pass, leaving some parts unprocessed with a bad index into the light buffer.

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