System hang on linux - Githubissues

Contraz / demosys-py

A light high performance modern OpenGL 3.3+ Python Framework https://demosys-py.readthedocs.io/

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System hang on linux #76

Open binaryf opened 5 years ago

binaryf commented 5 years ago

Full crash / system hang while running examples.textwriter.

Model: Lenovo Thinkpad X1 Carbon running Ubuntu 16 LTS.

Output: ModernGL: 5.4.2 vendor: Intel Open Source Technology Center renderer: Mesa DRI Intel(R) HD Graphics 5500 (Broadwell GT2) version: 4.5 (Core Profile) Mesa 18.0.5 python: 3.7.3 (default, Apr 19 2019, 22:46:35) [GCC 8.2.0] platform: linux

einarf commented 5 years ago

I could not find anything obvious in the code. Suspect this is some kind of limitation related to instancing? Need a much deeper dive..

Could be we should drop using instancing in the textwriter completely and bake the entire array needed.

einarf commented 5 years ago

Try again with 2.1.1. It uses moderngl 5.5.2