Moderator: GZDoom Developers
Rachael wrote:The renderer changes and evolves and there is no "looking back" with it.
The most you can do is append things like "-glversion 3" or "-glversion 2" to GZDoom's startup for the compatibility modes - but there's no way to switch the renderer to a previous version of GZDoom. It wouldn't help, anyway - GZDoom is CPU-locked on older systems, and if your CPU is not powerful enough you're going to experience stuttering.
The problem isn't the OpenGL on these systems - it's that you are running more and more demanding maps on them that GZDoom can't handle with the CPU power given on them. This is actually painfully true with ATI's, in particular. ATI drivers also CPU-lock the system - and with GZDoom needing to run things like the BSP node walker and the scene clipper, it simply bogs the CPU down beyond the point of being able to give a suitable frame rate. If you have an ATI card, your best bet is to switch to open source drivers, if they are available. ATI drivers are utter shit.
_mental_ wrote:You should try bench CCMD with different GZDoom versions at exactly the same location using exactly the same configuration file.
This will save benchmarks.txt with lots of performance information.
The command needs to be used at least three time in a row in each GZDoom version to get stable results.
Do not forget to set vid_vsync and vid_maxfps CVARs to zero before using it.
After that you can (or cannot) confirm changes in performance for the particular map spot across various releases.
Rachael wrote:If not, old versions can always be found here. I disabled the main download links because of the security flaw but the archive always works.
drfrag wrote:I understand you're on intel integrated video. GZDoom has always been heavily CPU dependant but recent versions have introduced a lot of eye-candy and i guess now you need a real graphics card to play with advanced features enabled. The old renderer (fixed function?) was pretty fast even on really crappy hardware. Zscript also adds some overhead if i'm not wrong.
Edit: What i don't get is that you're asking for an older renderer and want to use advanced features at the same time, which advanced features are you talking about BTW?
cortlong50 wrote:i just dont wanna be one of those dudes who releases a pack and goes "you have to play it with this specific version of gzdoom"...everyone including me...hates that hahaha. but for my personal runthroughs i may do it.
cortlong50 wrote:i would hate if doom got to the point where it wasnt even playable for people on lower end machines.
Since 3.0 there were really no relevant changes. Have you checked that the dropoff is directly related to the new version? If yes, running a benchmark test is really the only way to see what caused it.
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drfrag wrote:cortlong50 wrote:i just dont wanna be one of those dudes who releases a pack and goes "you have to play it with this specific version of gzdoom"...everyone including me...hates that hahaha. but for my personal runthroughs i may do it.
You don't need to do that, for legacy hardware there are a couple of unofficial ZDoom versions with the old GL renderer merged in. ZDoom LE is based on 2.8.1 and has a patched GL renderer from 1.8.4 (requires only GL 1.2). ZDoom32 is based on 2.9pre and has a patched GL renderer from 1.9.1.cortlong50 wrote:i would hate if doom got to the point where it wasnt even playable for people on lower end machines.
That's why i created those versions with lower system requirements.
I'm also awaiting your bechmark results. Could you please add ZDoom32 to them? (i haven't tested it on modern hardware). The download link is below my avatar.
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