[Survey] How many of you CANNOT run GZDoom's OpenGL renderer

[Graf Zahl]

With large textures it is. You won't be able to achieve that speed when transferring data to video memory. Texture creation is a very time consuming thing.

[hazardinnio]

With large textures it is. You won't be able to achieve that speed when transferring data to video memory. Texture creation is a very time consuming thing.

It is, but definitely not in this case. I'm pretty sure it's because of bad (or just not) optimized textures, or just conflict between textures and engine itself. There are no games that can't get enough memory bandwidth (if we're talking about modern cards). There are situations when you can't get enough gigabytes of memory, but not it's speed. at least in most situations

[Graf Zahl]

I have to admit that it has been a few years but the last time I benchmarked texture uploads it was 1/3 file loading and image decoding, 2/3 uploading the texture. Whatever goes wrong there, no idea. It's pretty much outside my control (i.e. one GL API call doing all the work.) What texture format are you using?

[Ral22]

This may be a fitting thread to post this; I recently got the latest SVN release of GZDoom and when I launched it a messages was displayed saying "Unsupported OpenGL version. At least G.L 2.0 is required to run GZDoom." Did GZDoom recently update the version of OpenGL it requires? Prior to this, I had no problems running GZDoom. Is there a way around this, or is my only option to upgrade my computer to support the new OpenGL?

[Blue Shadow]

Did GZDoom recently update the version of OpenGL it requires?

Yes, it was bumped from 1.3 to 2.0, minimum.

http://forum.drdteam.org/viewtopic.php?f=22&t=6306

[Graf Zahl]

... and even 2.0 is on the way out. It makes no sense trying to modernize the renderer and keep all the old cruft in.
GZDoom 2.0 will up the requirement to GL 3.0.

@Ral22: What's your graphics hardware? If you got a real desktop computer and still run some ancient GPU that doesn't even support GL 2.0 you are losing out on a lot of stuff.

[Ral22]

@Graf: It's only an issue on my laptop, which is low in power and rather dated. I honestly should have known that GZDoom would become incompatible with it at one point. That being the case, don't take any worries or care into that. I've needed to update to a better laptop for a long time coming. However, I don't miss too much, since most of my game playing is done on my Mac.

Thanks for answering my questions, guys. I was more curious about the update than I was bothered or the like.

[Arek_PL]

i was running latest SVN builds without problems and with high fps (even with mods like brutal doom) but now i get fatal error

[Nash]

Haha, I imagine with the new OpenGL renderer, that "No" bar at the top is going to get a little longer... :S

[Graf Zahl]

As long as the people say what hardware they have there may be help. But just saying 'it doesn't work' most definitely will not do anything about it.

[Devianteist]

I generally have problems running G/ZDoom on my outdated as hell laptop, but that's only because I'm not allowed to modify it's software/hardware.

On my desktop, I have the occasional drop in FPS, but it generally runs fine. I think something in the system is outdated, however, as there are occasionally some severe graphical glitches that occur for a second or two before they vanish.

As for the latest version of G/ZDoom, I can't even get it to start, let alone run anything, without using the Software renderer. Even then I have issues running stuff.

[Graf Zahl]

I think something in the system is outdated, however, as there are occasionally some severe graphical glitches that occur for a second or two before they vanish.

That sounds more like something is broken - not just outdated.

[edward850]

As for the latest version of G/ZDoom, I can't even get it to start, let alone run anything, without using the Software renderer. Even then I have issues running stuff.

If he's having issues with ZDoom's software renderer as well, something damn sure is broken. Even its hardware surface mode will run on anything with a GPU.

[Devianteist]

something damn sure is broken.

Well hell. It's a good thing I've been looking into getting a new computer.

[kevans91]

My Intel HD integrated video card seems to fall short of 3.0. OpenGL Extensions Viewer claims I currently have no support for:

1.3 shader language
GL_APPLE_flush_buffer_range
GL_EXT_framebuffer_multisample
GL_EXT_gpu_shader4
GL_EXT_texture_array
GL_EXT_texture_integer

-- I suppose its about time to upgrade to more than a laptop, or to a better laptop.