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IRC log for #luanti, 2026-07-09

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All times shown according to UTC.

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12:35 meta Greetings, ever since a few months back I am having trouble with my minetest game. The content of the game window turns blue. I have experimented with the opengl options in the in-launcher menu, but opengl did not solve it and ogles2 is not supported according to the debug.log. I installed a lower resolution texture pack in case i was running out of memory. That did nothing as well. The last thing I want to try is to change the renderer itself.
12:35 meta What ever configurations i made the "about page" still reports 4.6/opengl3. How can I change away from the 4.6 renderer?
12:39 meta The debug log does not show an error at all and while i have enabled opengl debug no opengl errors appeared in the log.
12:41 meta I am running 5.16.1 on Linux Mint with the Mesa driver. GPU is an intel i3 6100 integrated graphics.
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13:26 MTDiscord <luatic> meta: are you compiling yourself; can you compile it yourself? if so you can compile with ogles2 support and try that.
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13:44 Topic for #luanti is now The official Luanti (formerly Minetest) channel | General, player and modding discussion is on-topic. If in doubt, post here | Responses may take a while, be patient | Rules: https://dev.luanti.org/irc/#rules | Development: #luanti-dev | Server list: https://luanti.org/servers | IRC logs: https://irc.luanti.org/
13:45 sfan5 <meta> I also do not see the opengl debug.log, despite minetest.conf reporting "opengl_debug = true"
13:45 sfan5 the warnings - if any - will go into debug.txt
13:45 meta Core profile not explicitly requested. Compatibility profile is not supported.
13:46 sfan5 ^ that is to be expected when using renderdoc
13:46 meta Yup, I looked in debug.txt i am just more used to .log for these kind of things, my mistake.
13:47 meta I will go mine some blocks, and be back once i see blue.
13:51 MTDiscord <luatic> maybe for a different question, does luanti otherwise remain responsive?
13:51 MTDiscord <luatic> e.g. do walking sounds still play when the window is blue and you walk?
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13:58 meta I do not have sound enabled. I can check, but I just got it to blue.
13:59 meta The renderdoc overview was gone as well, but I remembered the f12 key and took a shot just in case we need that.
14:00 meta Capture has 888 issues. That does not sound good.
14:02 meta How do i get something useful out of this?
14:03 MTDiscord <luatic> you can share it with us for one
14:03 MTDiscord <luatic> you can also look at the (many) events (mostly drawcalls) yourself
14:04 meta Let me see how I get the file out...
14:06 meta Like this?
14:08 MTDiscord <luatic> i don't see a link to a file yet..?
14:09 sfan5 me neither
14:09 meta I send it by clicking on your name and selected send a file. My client shows an offer.
14:10 sfan5 what is your IRC client?
14:10 meta HexChat
14:11 sfan5 then you're trying to use DCC file transfer, which has practically not been working since 20 years ago.
14:11 user333_ don't use file transfers over IRC in 2026
14:11 meta did not know that, sorry
14:11 user333_ use x0.at or a similar site for temporary file hosting
14:13 meta https://x0.at/blue_screen_eWCx.rdc
14:13 meta Like this?
14:14 sfan5 yes
14:17 sfan5 when I open the capture on my pc the scene renders "fine" but all textures are corrupted
14:17 sfan5 if I had to guess there is a problem with your video driver
14:18 meta All other things on my pc are running fine thou.
14:18 sfan5 games or standard applications?
14:20 meta Both. But I don't run heavy games on it (iGPU), but Silksong runs great.
14:21 MTDiscord <luatic> meta: for a very wild guess, can you see if setting array_texture_max=0 in settings seems to fix the problem?
14:22 meta The heaviest I stress this machine with is propably minetest. @MTDiscord in minetest.conf?
14:22 MTDiscord <luatic> meta: yeah. though you can also do it in-game in the settings gui.
14:24 meta Variable set restarting now. No update on the sound thou, had not crashed yet.
14:25 meta I shut it down before editing the conf just in case that is brought up.
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15:14 meta Nope, now it dies to a black screen, no sound: https://x0.at/black_screen2_CCug.rdc
15:15 meta Black_screen1 i saved wrong, so we have to use the second one.
15:17 sfan5 this capture too renders correctly when I open it locally, but again all textures are corrupted
15:17 meta This took longer than all the other runs i had so array_texture_max maybe did something
15:17 meta usually it dies a lot faster
15:20 meta What i would like to know is what are these 591 errors renderdoc tries to point me to.
15:26 meta I am no expert on rendering, but what would prompt a texture reload? The textures were used before, so them suddenly corrupting reads like a failed refresh. Something that under normal conditions just reloads the textures but here loads junk for some reason.
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15:28 meta is glFlush a refresh?
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15:32 meta No, I just looked it up. Still, I would like to know how to get to these error messages.
15:34 meta Not sure if it could be solved like this, but is there a command in luanti that loads the textures which i could bind to a key to see if that recovers it? Not having textures would explain monocolored screens i think.
15:58 MTDiscord <luatic> i don't think it would
15:58 MTDiscord <luatic> even without textures, a lot of the rendering is just primitives + color
15:58 MTDiscord <luatic> the crosshair for example is drawn as two colored lines
15:59 MTDiscord <luatic> not having textures would look differently, more similar to what we can see when we replay the renderdoc capture (everything looks wrong, but the general shapes of things are still right)
15:59 meta Is there anything more I could try?
16:00 meta What hangs me up is that array_texture_max=0  actually changed the error.
16:01 meta It was blue for a split-second before it went black.
16:02 meta Also this was the longest it ever ran before crashing.
16:05 MTDiscord <luatic> well, you could always research whether there are known driver bugs, try to upgrade your drivers
16:06 MTDiscord <luatic> this looks like some sort of memory corruption that affects the driver, we may be far into "anything can happen" territory here
16:13 Ingar still that intel hd graphics ?
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16:15 meta intel HD 530 with mesa 23.2.2
16:17 meta mesa 23.2.1-1ubuntu3.1~22.04.4
16:18 meta Luanti worked on the machine for a long time and then stopped. I might try downgrading until it is fixed.
16:20 meta Looks like the repo only has up to 5.4.1.
16:28 meta Maybe i will try compiling the most recent release instead. There seem to be a few updates in there that i would not like to roll back.
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16:58 Ingar I've seen a number of silly issues with intel HD over the aeons, so I wouldn't discount the driver
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17:07 meta Well, maybe if i can get a debug build going i might see what goes wrong.
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17:30 meta I will have to go now, but thanks to everyone that helped. Once I have that debug build going I might come back here to share my findings.
17:34 MTDiscord <luatic> bye! thank you for your efforts!
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20:45 [MatrxMT]_ <birdlover32767> Fun Fact: turns out if you error out in `core.format_message`, the whole client crashes
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21:53 [MatrxMT]_ <Blockhead256> the client as well? impressive
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