Bug 345820

Summary:	Couldn't show what we draw with OpenGL turned on
Product:	[Applications] krita	Reporter:	Franklin Weng <franklin>
Component:	General	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	major	CC:	halla, wolfneon
Priority:	NOR
Version First Reported In:	2.9.1
Target Milestone:	---
Platform:	Other
OS:	macOS
URL:	https://www.youtube.com/watch?v=P8egRwEavzA&feature=youtube_gdata_player
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Franklin Weng 2015-04-03 02:10:19 UTC

When turned on OpenGL, krita couldn't show what we draw.  Please see the youtube video.

Reproducible: Always

Steps to Reproduce:
1. Turn on OpenGL in the settings
2. Draw something
3.

Actual Results:  
It couldn't show what we draw

Expected Results:  
It should show what we draw

Comment 1 Franklin Weng 2015-04-03 02:11:22 UTC

The youtube video showing this problem is in the "URL" field.

Comment 2 Halla Rempt 2015-04-03 10:42:11 UTC

Are you using a computer with an Intel graphics chip? In that case, please update your drivers: it is a bug in Intel's drivers, not in Krita.

Comment 3 Franklin Weng 2015-04-03 11:42:32 UTC

(In reply to Boudewijn Rempt from comment #2)
> Are you using a computer with an Intel graphics chip? In that case, please
> update your drivers: it is a bug in Intel's drivers, not in Krita.

I'm using Macbook Air.  With intel HD Graphics 4000 yes, but in the https://krita.org/download/krita-desktop/ it said that only windows versions are affected.  I'll check if it's driver issue.

Comment 4 Franklin Weng 2015-04-03 11:47:57 UTC

On my mac I've updated to the latest driver.  How to check if it is really a driver issue?

Comment 5 Halla Rempt 2015-04-04 17:48:01 UTC

Hm... On OSX, I'm just not sure myself...

Comment 6 Halla Rempt 2015-04-08 14:36:53 UTC

I'm not even sure what chip is in the old mac mini I use for builds... I'm afraid that there's nothing for it but to disable opengl for now.

Comment 7 Halla Rempt 2015-05-27 07:15:34 UTC

*** Bug 348271 has been marked as a duplicate of this bug. ***

Comment 8 wolfneon 2015-05-27 18:33:17 UTC

Just so you know, I have downloaded the Krita Beta versions from v2.8.91.1, v2.8.93.0 - v2.9.4.5

v2.8.91.1 worked at first but then when I was using it to draw, the canvas reverted back to its original issue, and then when I turned OpenGL off, used it a bit, and then turned it back on the canvas froze. I then continued to test the rest of versions previous to this one till they worked. Which it worked at the next one down: v2.8.80.3.

Even if I didn't help much with the developers, I hope I helped anyone who needs Krita to work on Mac with the canvas: use Krita v2.8.91.1 or pervious versions here, http://files.kde.org/krita/osx/

And for the developers, I would love to help further, but I am not skilled enough yet at coding to be of assistance. I am in college for computer science and am willing to get involved (future Google Summer of Code, perhaps?) and at least learn more about it so I can help when I have more knowledge. Where can I find more information on helping out/developing???

Comment 9 Halla Rempt 2015-05-28 10:36:08 UTC

Hi,

We've got some getting started info here: https://krita.org/get-involved/developers/ !

Comment 10 Halla Rempt 2015-08-16 18:18:55 UTC

I've also managed to reproduce this issue now.

Comment 11 Halla Rempt 2016-01-24 08:21:40 UTC

This "works" in 3.0 pre-alpha; however we've still got a bunch of work to do to implement a QPainter engine that supports Apple's emasculated opengl drivers. We're working on that, but, to be honest, this issue is Apple's fault.