Shader Editor has a significant delay after opening Translation. #65213

New Issue

Buzhe Guan · 2019-05-28T01:58:23+02:00

Buzhe Guan commented

2019-05-28 01:58:23 +02:00

System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.64

Blender Version
Broken: version: 2.80 (sub 72), branch: blender2.7, commit date: 2019-05-26 22:34, hash: d525c76003
Worked: (optional)

Short description of error
Shader Editor has a significant delay after opening Translation.
bandicam 2019-05-28 07-48-44-136.mp4

**System Information** Operating system: Windows-10-10.0.18362 64 Bits Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.64 **Blender Version** Broken: version: 2.80 (sub 72), branch: blender2.7, commit date: 2019-05-26 22:34, hash: `d525c76003` Worked: (optional) **Short description of error** Shader Editor has a significant delay after opening Translation. [bandicam 2019-05-28 07-48-44-136.mp4](https://archive.blender.org/developer/F7073405/bandicam_2019-05-28_07-48-44-136.mp4)

Buzhe Guan commented

2019-05-28 01:58:23 +02:00

Added subscriber: @EternalSpace

Buzhe Guan commented

2019-05-28 02:05:25 +02:00

The 2.79 version also has the same problem.

Buzhe Guan commented

2019-05-28 02:07:33 +02:00

Delay only when zooming.

Philipp Oeser commented

2019-05-28 13:29:56 +02:00

Added subscribers: @mont29, @lichtwerk

Philipp Oeser commented

2019-05-28 13:29:56 +02:00

I can notice a considerable slowdown as well.
This is not the ShaderEditor alone though, I think this applies to all parts of the Interface that allow zooming (try opening up all panels in the Properties Editor render tab and zoom in there --> same thing).

Havent checked code, I assume the font widths have to calculated, maybe they are cached for non-translated texts? Or translating itself takes up a considerable amount of time itself?
@mont29: not sure we would consider this a bug or TODO? would there be room for improvement (caching)?

I can notice a considerable slowdown as well. This is not the ShaderEditor alone though, I think this applies to all parts of the Interface that allow zooming (try opening up all panels in the Properties Editor render tab and zoom in there --> same thing). Havent checked code, I assume the font widths have to calculated, maybe they are cached for non-translated texts? Or translating itself takes up a considerable amount of time itself? @mont29: not sure we would consider this a bug or TODO? would there be room for improvement (caching)?

Jacques Lucke commented

2019-05-28 15:04:11 +02:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-05-28 15:04:11 +02:00

Most time is spent creating textures indeed.

Most time is spent creating textures indeed. ![image.png](https://archive.blender.org/developer/F7075343/image.png)

Bastien Montagne commented

2019-05-28 16:31:41 +02:00

Yeah, iirc this has already been reported (though I don’t feel like doing archeology in the tracker to find the report(s))… Key issue here is that our i18n font is much, much bigger than the one we use when UI translations are not enabled, which impacts caching of the glyphs for drawing text… I do not remember the details, but this is known issue. If someone want to work on it, it’d sure be welcomed. :)

Philipp Oeser removed the

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Shader Editor has a significant delay after opening Translation. #65213