Author Topic: 8fps in fz at full hd normal?  (Read 2496 times)

Offline gogolo

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8fps in fz at full hd normal?
« on: February 15, 2017, 04:23:11 PM »
Hi

I wonder if my lg gttab is too slow or I'm doing something wrong. Gtab has a snap s4pro and adreno 320. When I load zelda oot in mupen fz with native res (full hd) and high res textures I get around 8fps, with 920x760 17fps.

Is that normal? Thx for your help.
Olivier

Offline retroben

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Re: 8fps in fz at full hd normal?
« Reply #1 on: February 15, 2017, 07:31:35 PM »
Its a mix of Adreno and possibly GLideN64 which likes to cause horrendous performance the more accurate it gets.
It even brings a Shield TV down to its knees in some cases.

You'd have to enable legacy blending in a profile for better performance and possibly disable depth buffering and a few other very demanding things if they are also enabled.

Hopefully GLideN64 can eventually get the optimizations it deserves and start running much faster with a lower impact on the cpu and gpu.

If anyone capable could attempt a good port of it to Vulkan,it may perform better on the devices with non-broken Vulkan drivers.

Offline gogolo

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Re: 8fps in fz at full hd normal?
« Reply #2 on: February 16, 2017, 01:06:45 AM »
Thx for your answer!  Disabling depth buffer doubled fps to 17 in full hd,  cool! Legacy blending was enabled already. Is there a tutorial somewhere how to further optimize glideN64 for speed? Thx again.
« Last Edit: February 16, 2017, 01:17:52 AM by gogolo »

Offline fzurita

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Re: 8fps in fz at full hd normal?
« Reply #3 on: February 16, 2017, 04:03:30 AM »
Disabling the depth buffer on that game will cause various glitches. You will probably get a better experience by playing at a lower resolution with it enabled.

Offline retroben

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Re: 8fps in fz at full hd normal?
« Reply #4 on: February 16, 2017, 12:43:05 PM »
Adreno hates high resolutions more than most other chipset brands.

GLideN64 has been known (at least by me) to have overheat risks,as my Shield TV would get hot on more extreme settings with it.
I haven't tried the cutting edge latest update for any differences,mainly because I am waiting for bigger changes,provided GLideN64 gets a significant update in the next few weeks or so.

Offline gogolo

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Re: 8fps in fz at full hd normal?
« Reply #5 on: February 17, 2017, 07:32:58 AM »
Thanks for your kind help.  Disabling frame buffer results in black intermediate scenes. So I guess it's either low res or a new tab  ;)