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"3D Text (HTML)" causes freeze #329

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meoso opened this Issue Oct 20, 2016 · 7 comments

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@meoso

meoso commented Oct 20, 2016

v16.10.01

Selecting "3D Text (HTML)" causes Shotcut to freeze. Unsure where to get logs or create verbose logging.

Linux 4.7.0-0.bpo.1-amd64 #1 SMP Debian 4.7.5-1~bpo8+2 (2016-10-01) x86_64 GNU/Linux

@ddennedy

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ddennedy commented Oct 21, 2016

It works for me on Ubuntu 16.04 with nvidia gpu driver. It also works on at least one macOS machine. This filter is quite complicated by using a Web view rendering WebGL to an offscreen buffer and integrated into the MLT engine. I know it does not work for some people, and at this time it is largely a matter of it may or may not work for you. So, we will leave the bug open, but at this time I do not know of a way to fix it as it goes deep into the guts of QtWebKit and OpenGL.

@meoso

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meoso commented Oct 21, 2016

Thank you. Possibly, because i don't have a add-on GPU -- only the on-board HD4000 series CPU-Embedded graphics. Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller

Should I look for any Web[GL|Kit] / OpenGL / Qt packages to install -- Or is everything embedded into Shotcut? Thanks for the fantastic product!!

@ddennedy

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ddennedy commented Oct 21, 2016

In my experience OpenGL interoperability is a little brittle/fragile. What do I mean by that? The app sends a bunch of OpenGL commands, which are very expressive, in the hopes that the driver+firmware+hardware does the expected thing.

All the Qt and WebKit dependencies are included with Shotcut and system versions not used. I do not have any advice about OpenGL alternatives for your system. There is mesa+llvmpipe, which is all CPU-based, but its really slow especially without many cores.

@lnx64

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lnx64 commented Oct 22, 2016

meoso, I have an HD graphics 4600 on my laptop, and this filter works fine. Ubuntu 16.04.01.

I'm not sure what it uses for OpenGL though. My desktop I know but not my laptop. It might be mesa.

@meoso

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meoso commented Oct 22, 2016

Thank you both, I will look at my mesa drivers; otherwise, i'll stick with regular "text" for now...

@ddennedy

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ddennedy commented Nov 6, 2016

I now have this problem on Windows 10 since v16.09 when Qt was upgraded to our own build of Qt 5.6.1 that includes QtWebKit.

@bill17

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bill17 commented Apr 18, 2017

I have new compupter and i have this bug too!
Computer: Core-i7 -7700k Nvidia 1070
Fedora 25: 3D Text (HTML)" causes freeze
but Windows 10 work correctly.

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