Timeline for Bevel modifier causes incorrect normals
Current License: CC BY-SA 4.0
26 events
| when toggle format | what | by | license | comment | |
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| May 16, 2023 at 8:29 | history | edited | quellenform♦ | CC BY-SA 4.0 |
Rephrased title, fixed formatting
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| S May 16, 2023 at 8:18 | history | mod moved comments to chat | |||
| S May 16, 2023 at 8:18 | comment | added | Robin Betts♦ | Comments have been moved to chat; please do not continue the discussion here. Before posting a comment below this one, please review the purposes of comments. Comments that do not request clarification or suggest improvements usually belong as an answer, on Blender Meta, or in Blender Chat. Comments continuing discussion may be removed. | |
| May 16, 2023 at 8:17 | comment | added | Robin Betts♦ | Hi, people.. this discussion has got a little too long for the comments section, so I've moved it to chat. When settled, i'll clean up some of the commentary from here. | |
| May 16, 2023 at 8:06 | comment | added | Markus von Broady | @GordonBrinkmann my point was exactly that: i.imgur.com/O8pjQnp.png autosmooth with 180° makes sense if you want to manually mark sharp edges, but avoid any sharpness on edges not marked sharp. | |
| May 16, 2023 at 7:43 | comment | added | YPOC | From the screen shot alone you can see that the normals of the mesh are messed up. A simple recalculation usually fixes this. If they were correctly aligned, you wouldn't see these light and dark splotches in places, where it should be shaded uniformly. With messed up normals the bevel modifier can not compute in which direction it should bevel the edges. | |
| May 16, 2023 at 7:15 | comment | added | Gordon Brinkmann | @MarkusvonBroady Yes, I have... this is what it looks like when using only Mark Sharp in Edit Mode sharp edges - it's in almost all cases no difference. And this is when I select all and create custom split normals custom split normals. If I don't require specific edges to be sharp while all others are smooth, I usually get away with only using Auto Smooth set to a reasonable angle below 90°. | |
| May 15, 2023 at 16:13 | history | became hot network question | |||
| May 15, 2023 at 14:36 | comment | added | Markus von Broady | @GordonBrinkmann Have you actually tried it? Because I did, and I do see the sharp edges where I marked them. | |
| May 15, 2023 at 12:39 | comment | added | Gordon Brinkmann | @MarkusvonBroady Well, the Harden Normals part I mentioned... and for split normals this is true, too. But if I for example simply mark certain edges as sharp and set Auto Smooth to 180° (or anything from 90° to above), those edges will be smoothed although marked sharp - so it is the same as disabling it completely, or at least it looks the same enabled and disabled. | |
| May 15, 2023 at 10:53 | comment | added | Markus von Broady | "Setting Auto Smooth to 180° is like disabling it completely." - with some exceptions, as you figured out, whenever custom split normals are used, they require autosmooth, but also if you mark edges sharp and want that to be used in shading, you too need auto smooth. | |
| May 15, 2023 at 9:20 | answer | added | Gordon Brinkmann | timeline score: 4 | |
| May 15, 2023 at 9:07 | vote | accept | Alex Krugeri | ||
| May 15, 2023 at 9:07 | answer | added | moonboots | timeline score: 5 | |
| May 15, 2023 at 8:56 | comment | added | moonboots | As Gordon says you need to Clear Custom Split Normals Data, also merge by distance the whole mesh because you have overlapping vertices, and set the Bevel Amount value to 0.02 | |
| May 15, 2023 at 8:52 | history | edited | Alex Krugeri | CC BY-SA 4.0 |
added 114 characters in body
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| May 15, 2023 at 8:48 | comment | added | Alex Krugeri | @GordonBrinkmann the button is not active | |
| May 15, 2023 at 8:44 | comment | added | moonboots | He probably has enabled the Shading > Harden Normals option of the Bevel modifier, which needs the Auto Smooth enabled and will smooth the bevels but not the faces, have you enabled this option? Edit: Oops but yours seems to be enabled | |
| May 15, 2023 at 8:39 | comment | added | Gordon Brinkmann | @AlexKrugeri I guess you have messed up your mesh somehow. Go to Object Data Properties and under Geometry Data check if there is a button Clear Custom Split Normals Data. If so, click on it so that it resets to Add Custom Split Normals Data. The reason why he sets Auto Smooth to 180° is that he does not actually want the Auto Smooth to take care of sharpening the edges, but he enables the Harden Normals option in the Bevel modifier, and this needs Auto Smooth to be enabled in order to work. But without the modifier this setting would be useless. | |
| May 15, 2023 at 8:29 | comment | added | Alex Krugeri | youtube.com/… If you go to minute 24:29 you can see when he sets the auto-smooth to 180. I'm a total noob in Blender, and I'm trying to learn my way around the software, I tried to figure this thing out, but I'm just stuck in here with this weird looking objects 😅 | |
| May 15, 2023 at 8:23 | comment | added | Gordon Brinkmann | The Auto Smooth option is used to have smooth objects not overly smoothed so that certain angles still look sharp. It only really makes sense to use it with values below 90°, that's why the default value is 30°. What tutorial is that, because setting it to 180° makes absolutely no sense - but I wouldn't say that every tutor always knows what he's doing... | |
| May 15, 2023 at 8:20 | comment | added | Alex Krugeri | @GordonBrinkmann the thing is that I also tried to follow what the guy in the tutorial had, and he applied 180° to all of the above-mentioned objects. And with 90° they don't change much in terms of being close at least to the result I'm trying to achieve. Thank you for the hint tho! | |
| May 15, 2023 at 8:17 | comment | added | Gordon Brinkmann | Of course the Auto Smooth doesn't show any changes between 90° and 180°. The value means, every angle below this gets shaded smooth. Since you seem to have mostly 90° angles on your objects, there is nothing above 90° which is not smoothed. Setting Auto Smooth to 180° is like disabling it completely. | |
| May 15, 2023 at 8:13 | history | edited | Alex Krugeri | CC BY-SA 4.0 |
deleted 44 characters in body
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| S May 15, 2023 at 8:12 | review | First questions | |||
| May 15, 2023 at 8:17 | |||||
| S May 15, 2023 at 8:12 | history | asked | Alex Krugeri | CC BY-SA 4.0 |
