Aliased wireframes + modifier edit mode display issue #105582

New Issue

Paul Kotelevets · 2023-03-09T05:59:20+01:00

Paul Kotelevets commented

2023-03-09 05:59:20 +01:00

System Information
Operating system: Linux-4.15.0-51-generic-x86_64-with-glibc2.27 64 Bits
Graphics card: GeForce GTX 850M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.143

Blender Version
Broken: version: 3.4.1, branch: blender-v3.4-release, commit date: 2022-12-19 17:00, hash: rB55485cb379f7
2.90
Worked: 2.79, 2.81

Short description of error
Edit mode aliased wireframes (selected/unselected) of a mesh with modifiers looks broken for both ortho and perspective views, even with reasonable clipping range.

Steps to reproduce

Open file
Disable all anti-aliasing and smoothing in preferences > Viewport > Quality

Selection looks bad, but also other edges are bit fuzzy. Disable mirror modifier visibility in edit mode and edges looks better.

**System Information** Operating system: Linux-4.15.0-51-generic-x86_64-with-glibc2.27 64 Bits Graphics card: GeForce GTX 850M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.143 **Blender Version** Broken: version: 3.4.1, branch: blender-v3.4-release, commit date: 2022-12-19 17:00, hash: `rB55485cb379f7` 2.90 Worked: 2.79, 2.81 **Short description of error** Edit mode aliased wireframes (selected/unselected) of a mesh with modifiers looks broken for both ortho and perspective views, even with reasonable clipping range. **Steps to reproduce** * Open file * Disable all anti-aliasing and smoothing in preferences > Viewport > Quality Selection looks bad, but also other edges are bit fuzzy. Disable mirror modifier visibility in edit mode and edges looks better.

ALIASED_WIRES_BEVEL.blend

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Wire aliased bevel.png

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Paul Kotelevets added the

labels 2023-03-09 05:59:21 +01:00

Paul Kotelevets changed title from ~~Aliased wireframes display edit mode issue~~ to Aliased wireframes edit mode display issue

2023-03-09 06:06:30 +01:00

Paul Kotelevets changed title from ~~Aliased wireframes edit mode display issue~~ to Aliased wireframes bevel modifier edit mode display issue

2023-03-09 06:21:35 +01:00

Paul Kotelevets changed title from ~~Aliased wireframes bevel modifier edit mode display issue~~ to Aliased wireframes + modifier edit mode display issue

2023-03-09 06:22:51 +01:00

Pratik Borhade commented

2023-03-09 14:43:51 +01:00

Hi, thanks for the report. This is same as #64915, closing. (both shows aliasing problem with mirror modifier)
Feel free to comment or reopen the report if there is misunderstanding.

Hi, thanks for the report. This is same as #64915, closing. (both shows aliasing problem with mirror modifier) Feel free to comment or reopen the report if there is misunderstanding.

Pratik Borhade closed this issue

2023-03-09 14:43:52 +01:00

Blender Bot added

and removed

labels 2023-03-09 14:43:54 +01:00

Pratik Borhade added

and removed

labels 2023-03-09 14:44:01 +01:00

Paul Kotelevets commented

2023-03-09 20:46:48 +01:00

Hi, thanks for the report. This is same as #64915, closing. (both shows aliasing problem with mirror modifier)
Feel free to comment or reopen the report if there is misunderstanding.

I think it is a quite different issue from mentioned above, this one is about the case when antialiasing is not used on purpose at all, and another is about the cases when antialiasing is used but broken.

Aliased wireframes are commonly used for workflows that require visual checking of a verticality, horizontality and microangles during mesh modeling (CAD workflows domain - architecture, manufacturing, etc)

Since visual accuracy of an aliased wireframes display is a workflow demand, I would prefer to reopen it, because both issues has different goals, has different requirements to satisfy and may require different solutions.

> Hi, thanks for the report. This is same as #64915, closing. (both shows aliasing problem with mirror modifier) > Feel free to comment or reopen the report if there is misunderstanding. I think it is a quite different issue from mentioned above, this one is about the case when antialiasing is not used on purpose at all, and another is about the cases when antialiasing is used but broken. Aliased wireframes are commonly used for workflows that require visual checking of a verticality, horizontality and microangles during mesh modeling (CAD workflows domain - architecture, manufacturing, etc) Since visual accuracy of an aliased wireframes display is a workflow demand, I would prefer to reopen it, because both issues has different goals, has different requirements to satisfy and may require different solutions.

Paul Kotelevets reopened this issue

2023-03-14 03:08:44 +01:00

Blender Bot added

and removed

labels 2023-03-14 03:08:46 +01:00

Iliya Katushenock commented

2023-03-14 06:11:42 +01:00

I can't confirm the issue from the screenshot in the example. Unless you mean something like that?

I can't confirm the issue from the screenshot in the example. Unless you mean something like that? ![image](/attachments/e801d0f2-81eb-42d7-b259-7c4cf55a3834)

image.png

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Paul Kotelevets commented

2023-03-14 15:36:05 +01:00

I can't confirm the issue from the screenshot in the example. Unless you mean something like that?

It looks like your wireframes has antialiasing enabled. You need to turn it off to reproduce.

> I can't confirm the issue from the screenshot in the example. Unless you mean something like that? > ![image](/attachments/e801d0f2-81eb-42d7-b259-7c4cf55a3834) It looks like your wireframes has antialiasing enabled. You need to turn it off to reproduce.

Iliya Katushenock commented

2023-03-14 15:48:07 +01:00

@1D_Inc I turned it on just to find something. I can't reproduce the original way

Paul Kotelevets commented

2023-03-14 21:52:08 +01:00

@1D_Inc I turned it on just to find something. I can't reproduce the original way

Can you paste a screenshot with aliased wireframes and no original described problem on it, please?
I used the latest official release, but also tried 3.3.4 LTS

> @1D_Inc I turned it on just to find something. I can't reproduce the original way Can you paste a screenshot with aliased wireframes and no original described problem on it, please? I used the latest official release, but also tried 3.3.4 LTS ![image](/attachments/bb850e79-dc2f-4c67-a273-7e7c7be16587)

image.png

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Iliya Katushenock commented

2023-03-15 12:32:06 +01:00

3.3	3.6

| 3.3 | 3.6 | | -------- | -------- | | ![image](/attachments/308929b5-5a7c-45e9-85cd-66f664e065b1) | ![image](/attachments/4f46e88a-39b6-4564-a03c-d131e94a129f) |

image.png

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image.png

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Paul Kotelevets commented

2023-03-15 19:57:27 +01:00

@mod_moder
They still look very antialiased.
You need to turn off smooth wires edit mode checkbox in viewport preferences (like on my latest screenshot), save preferences and restart Blender to apply changes.

@mod_moder They still look very antialiased. You need to turn off smooth wires edit mode checkbox in viewport preferences (like on my latest screenshot), save preferences and restart Blender to apply changes.

IMG_20230315_220409.jpg

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Richard Antalik commented

2023-03-16 07:22:06 +01:00

I guess this is result of having 2 edge drawing engines (at least from how I understand this is done now). This may be a limitation of current system, but will confirm.

Edit: actually now I read the issue more closely, when I disable modifier in edit mode, there is no z fighting, so I am even less sure about why this happens. But still I think this is valid issue

I guess this is result of having 2 edge drawing engines (at least from how I understand this is done now). This may be a limitation of current system, but will confirm. Edit: actually now I read the issue more closely, when I disable modifier in edit mode, there is no z fighting, so I am even less sure about why this happens. But still I think this is valid issue

Paul Kotelevets commented

2023-03-16 07:25:41 +01:00

It looks like pretty heavy limitation.

Richard Antalik added

and removed

labels 2023-03-16 07:27:25 +01:00

Richard Antalik commented

2023-03-16 07:30:25 +01:00

I have edited the comment a bit, but still could be, that these lines are drawn in passes, so there are issues with blending them.

Paul Kotelevets commented

2023-03-16 13:13:07 +01:00

Yes, there are issues with blending/drawordering them that results in flickering and z-fighting of a selection drawing and drawing a wireframe behind it.

Characterhero commented

2024-03-09 16:06:19 +01:00

This only happens with modifiers

An additional outline appears

Video: https://youtu.be/m3VrigOhpiw

This only happens with modifiers ![изображение](/attachments/6acb5642-9aec-4a71-a115-d526797e5245) ![изображение](/attachments/e9b70388-5082-45d3-9c8c-be040c3ae24d) An additional outline appears ![изображение](/attachments/9ad3843b-6bbb-4f62-b5cb-13c2b08981de) Video: https://youtu.be/m3VrigOhpiw

1.blend

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изображение.png

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изображение.png

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изображение.png

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Characterhero commented

2024-03-10 05:53:45 +01:00

this has always been broken, since version 2.80. As I understand it, there is a slight shift due to which the overlay effect occurs.

279_2.png

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240_1.png

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279_1.png

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TEST1.blend

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240_2.png

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01.gif

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fin commented

2024-03-12 09:47:14 +01:00

Yes, such an effect injures proper mesh readability which makes modeling since 2.8 harder, especially modeling from references and in case when aliasing is used (for example, for detecting accidental skews in straight geometry)

Characterhero commented

2024-03-12 16:31:04 +01:00

Yes, such an effect injures proper mesh readability which makes modeling since 2.8 harder, especially modeling from references and in case when aliasing is used (for example, for detecting accidental skews in straight geometry)

It's a shame that we have to wait years for such basic fixes. Do their artists really not see this as a problem at all? Moreover, all this has been going on since 2.8. Are there really no people on their team who worked in 2.7? They need to stop making simple cartoons, and start making something technologically advanced with small details and a dense mesh.

> Yes, such an effect injures proper mesh readability which makes modeling since 2.8 harder, especially modeling from references and in case when aliasing is used (for example, for detecting accidental skews in straight geometry) It's a shame that we have to wait years for such basic fixes. Do their artists really not see this as a problem at all? Moreover, all this has been going on since 2.8. Are there really no people on their team who worked in 2.7? They need to stop making simple cartoons, and start making something technologically advanced with small details and a dense mesh.

Richard Antalik referenced this issue

2024-07-15 09:21:57 +02:00

The mirror is superimposed on the main grid in edit mode #124666

Bart van der Braak added

and removed

labels 2024-08-14 13:14:21 +02:00

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