Cycles Baking and applyRotation issues #40156

New Issue

michalis zissiou · 2014-05-12T12:15:24+02:00

michalis zissiou commented

2014-05-12 12:15:24 +02:00

MacPro dualXeon, ATI HD 5870, OSX 10.8.5
hash 8904eaf

Applying rotation issue

Try this blend file, it demonstrates the issue.
https://dl.dropboxusercontent.com/u/24090090/ApplyBakeTest.blend.zip

Here's a request, it sounds rather as a feature but can be considered as a major bug.
Have two or three cubes on a plane. Add a second plane on top (to be the active for baking).
Try for normal maps.
OK. (I mean, bevel these cubes to have something to see on a nmap LOL)
Now, rotate these cubes a bit, select all, the last is the active plane on the top. Bake…
Wrong? because you did not apply rotation on objects first!
It goes worse now.
Use an empty and rotate the object by this empty.
Wrong baking again.

This isn't right. We shouldn't have to apply rotations and scale and etc. In fact we should avoid it in most cases.
An object has its own coordinates and we have to respect this.

By example, bake a nice object space normal map, apply it to the object, rotate the object. All fine. Apply rotation and the OS nmap is useless. (same when rotating in edit mode)

MacPro dualXeon, ATI HD 5870, OSX 10.8.5 hash 8904eaf Applying rotation issue Try this blend file, it demonstrates the issue. https://dl.dropboxusercontent.com/u/24090090/ApplyBakeTest.blend.zip Here's a request, it sounds rather as a feature but can be considered as a major bug. Have two or three cubes on a plane. Add a second plane on top (to be the active for baking). Try for normal maps. OK. (I mean, bevel these cubes to have something to see on a nmap LOL) Now, rotate these cubes a bit, select all, the last is the active plane on the top. Bake… Wrong? because you did not apply rotation on objects first! It goes worse now. Use an empty and rotate the object by this empty. Wrong baking again. This isn't right. We shouldn't have to apply rotations and scale and etc. In fact we should avoid it in most cases. An object has its own coordinates and we have to respect this. By example, bake a nice object space normal map, apply it to the object, rotate the object. All fine. Apply rotation and the OS nmap is useless. (same when rotating in edit mode)

michalis zissiou commented

2014-05-12 12:15:24 +02:00

Changed status to: 'Open'

Dalai Felinto was assigned by michalis zissiou

2014-05-12 12:15:24 +02:00

michalis zissiou commented

2014-05-12 12:15:24 +02:00

Added subscriber: @michaliszissiou

Dalai Felinto commented

2014-05-12 20:43:27 +02:00

You are no longer supposed to apply rotation to any object. If that's not happening than it's a bug.
I'll check your file later. Does the same file bake well in Blender Internal?

You are no longer supposed to apply rotation to any object. If that's not happening than it's a bug. I'll check your file later. Does the same file bake well in Blender Internal?

michalis zissiou commented

2014-05-12 23:05:15 +02:00

The file bakes well in blender internal
Cycles render is still wrong, in the half an hour ago build hash 3557094

The file bakes well in blender internal Cycles render is still wrong, in the half an hour ago build hash 3557094

michalis zissiou commented

2014-05-12 23:18:15 +02:00

This bug is here, some time now.
Just reminding, the wrong object space I was getting, trying on a sculpt imported from zbrush.
Zbrush tends to rotate x 90º. Easy to not see it. So, wrong OS if not applying rotation. (Direct bake)
And completely wrong, when bake to active.
Lot of complains and failures of new users may be related to this.

This bug is here, some time now. Just reminding, the wrong object space I was getting, trying on a sculpt imported from zbrush. Zbrush tends to rotate x 90º. Easy to not see it. So, wrong OS if not applying rotation. (Direct bake) And completely wrong, when bake to active. Lot of complains and failures of new users may be related to this.

Manfred Giebler commented

2014-05-13 10:04:22 +02:00

Added subscriber: @mgiebler

Manfred Giebler commented

2014-05-13 10:04:22 +02:00

Added my own test file created in latest BuildBot build 51fa66b (win32 vs2013).

Steps to reproduce: load sel_to_act_1.blend, click Bake, view the (correct) normal map on the right, switch to Cycles Render, click Bake again, compare.

Added my own test file created in latest BuildBot build 51fa66b (win32 vs2013). Steps to reproduce: load sel_to_act_1.blend, click Bake, view the (correct) normal map on the right, switch to Cycles Render, click Bake again, compare.

Dalai Felinto commented

2014-05-14 09:39:05 +02:00

Thanks for the sample file, that's a pretty good one.

Alexander Zubov commented

2014-05-16 18:46:43 +02:00

Added subscriber: @motorsep

Alexander Zubov commented

2014-05-16 18:46:43 +02:00

Sometimes it's not practical to apply location/rotation in the scene. You don't just bake final models that you won't ever touch again. There are iterations in the process and you will need to continue modeling/refining from the moment you left off to bake normal maps (as an example).

Why not to automatically create a copy of objects that are being baked, apply transforms to them, bake maps, delete copies afterward ? This way you end up with unmodified scene, and proper bake results.

Sometimes it's not practical to apply location/rotation in the scene. You don't just bake final models that you won't ever touch again. There are iterations in the process and you will need to continue modeling/refining from the moment you left off to bake normal maps (as an example). Why not to automatically create a copy of objects that are being baked, apply transforms to them, bake maps, delete copies afterward ? This way you end up with unmodified scene, and proper bake results.

Dalai Felinto commented

2014-05-16 20:29:01 +02:00

@motorsep you misunderstood something. The idea of applying the transformations is only a workaround before we fix this issue. It's a bug and will be fixed.

Dalai Felinto commented

2014-05-21 20:10:30 +02:00

Issue partly fixed, there is a remaining issue though: cycles_bake_sel_to_act_GSR.blend
If the highpoly object has non-uniform scale things don't work well.

Issue partly fixed, there is a remaining issue though: [cycles_bake_sel_to_act_GSR.blend](https://archive.blender.org/developer/F89610/cycles_bake_sel_to_act_GSR.blend) If the highpoly object has non-uniform scale things don't work well.

blender-admin commented

2014-05-21 20:10:57 +02:00

This issue was referenced by 8d297394ba

This issue was referenced by 8d297394ba51246f2db0d503df7f4cae19ca6e92

Dalai Felinto commented

2014-05-21 20:13:51 +02:00

Changed status from 'Open' to: 'Resolved'

Dalai Felinto closed this issue

2014-05-21 20:13:51 +02:00

Dalai Felinto commented

2014-05-21 20:13:51 +02:00

Closed by commit 8d297394ba.

Closed by commit 8d297394ba.

Dalai Felinto commented

2014-05-21 20:15:59 +02:00

Changed status from 'Resolved' to: 'Open'

Dalai Felinto reopened this issue

2014-05-21 20:15:59 +02:00

blender-admin commented

2014-05-22 20:05:02 +02:00

This issue was referenced by 2bfc3debd9

This issue was referenced by 2bfc3debd90ac0176e62de37d7aeea1a5316e658

Dalai Felinto commented

2014-05-22 20:05:19 +02:00

Changed status from 'Open' to: 'Resolved'

Dalai Felinto closed this issue

2014-05-22 20:05:19 +02:00

Dalai Felinto commented

2014-05-22 20:05:19 +02:00

Closed by commit 2bfc3debd9.

Closed by commit 2bfc3debd9.

Bartosz Moniewski commented

2014-05-27 15:54:06 +02:00

Added subscriber: @BartekMoniewski

blender-admin commented

2014-05-29 17:20:55 +02:00

This issue was referenced by 2057a3a2fc

This issue was referenced by 2057a3a2fcd545ad16fd77f789562727a5fd3f8b

Dalai Felinto commented

2014-05-29 17:29:46 +02:00

For the records, this is properly fixed now. No errors/warnings, it simply handles whatever transformation the selected objects have.

michalis zissiou commented

2014-05-29 18:14:38 +02:00

I had my tests. Lot of them.
So far, it works fine.
I also performed tests including arrays combined with curve deform. I also tested alt+S on the curve bezier.
Lot of deforms and rotations.
Cycles bakes them perfectly.
I believe it is fixed.

I had my tests. Lot of them. So far, it works fine. I also performed tests including arrays combined with curve deform. I also tested alt+S on the curve bezier. Lot of deforms and rotations. Cycles bakes them perfectly. I believe it is fixed.

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Cycles Baking and applyRotation issues #40156