Multi-resolution modifier does not save data when btx file and mesh do not match face/vertex count #59824

New Issue

LapisSea · 2018-12-24T20:11:28+01:00

LapisSea commented

2018-12-24 20:11:28 +01:00

System Information
Operating system: Windows 10
Graphics card: GTX 970

Blender Version
Broken: daily build - December 24, e5e885d0ec, 2.8

Short description of error

When using multi resolution with external btx file, any changes are not saved if the btx poly count and actual mesh poly count is not equal. (even if only change was adding geometry)

Note:
If poly count mismatch occurs happens a warning in modifier should be displayed
Can be fixed by packing, deleting/renaming/moving original and again saving externally

Exact steps for others to reproduce the error

Add multi-resolution modifier with LOD of choice
Go in to sculpt and sculpt anything
Exit sculpt mode
Save file and pack external
Exit blender
Reopen file
Go to edit mode and add any geometry (such as a disconnected plane for simplicity)
Go in to sculpt and sculpt anything
save and reopen file

**System Information** Operating system: Windows 10 Graphics card: GTX 970 **Blender Version** Broken: daily build - December 24, e5e885d0ecb9, 2.8 **Short description of error** When using multi resolution with external btx file, any changes are not saved if the btx poly count and actual mesh poly count is not equal. (even if only change was adding geometry) Note: If poly count mismatch occurs happens a warning in modifier should be displayed Can be fixed by packing, deleting/renaming/moving original and again saving externally **Exact steps for others to reproduce the error** - Add multi-resolution modifier with LOD of choice - Go in to sculpt and sculpt anything - Exit sculpt mode - Save file and pack external - Exit blender - Reopen file - Go to edit mode and add any geometry (such as a disconnected plane for simplicity) - Go in to sculpt and sculpt anything - save and reopen file

LapisSea commented

2018-12-24 20:11:28 +01:00

Added subscriber: @LapisSea

blender-admin commented

2018-12-24 20:11:28 +01:00

#60163 was marked as duplicate of this issue

Sebastian Parborg commented

2019-01-24 12:42:34 +01:00

Added subscriber: @ZedDB

Sergey Sharybin was assigned by Sebastian Parborg

2019-01-24 12:42:34 +01:00

Sebastian Parborg commented

2019-01-24 12:42:34 +01:00

I'm getting an assert with my debug build when I add a new plane:
BLI_assert failed: /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/multires_reshape.c:249, multires_reshape_vertex_from_final_data(), at 'grid_paint_mask->level == displacement_grid->level'

So I guess that we already know that the mismatch happens.
Without that assert, I can confirm that the sculpting data is not saved on the plane.

I'm getting an assert with my debug build when I add a new plane: `BLI_assert failed: /home/zed/programmering/blender_master/blender/source/blender/blenkernel/intern/multires_reshape.c:249, multires_reshape_vertex_from_final_data(), at 'grid_paint_mask->level == displacement_grid->level'` So I guess that we already know that the mismatch happens. Without that assert, I can confirm that the sculpting data is not saved on the plane.

Sergey Sharybin commented

2019-01-24 13:31:42 +01:00

Did this work in 2.79b?

Sebastian Parborg commented

2019-01-24 14:14:40 +01:00

@Sergey seems to work for me in 2.79 (blender2.7 branch)

Sergey Sharybin commented

2019-01-24 14:25:59 +01:00

@ZedDB, getting a bit tricky to follow steps here. Mind testing with f15a5440a1 and if the issue still happens provide some basic .blend file and steps for me?

@ZedDB, getting a bit tricky to follow steps here. Mind testing with f15a5440a1 and if the issue still happens provide some basic .blend file and steps for me?

Sebastian Parborg commented

2019-01-24 15:06:17 +01:00

Changed status from 'Open' to: 'Resolved'

Sebastian Parborg closed this issue

2019-01-24 15:06:17 +01:00

Sebastian Parborg commented

2019-01-24 15:06:17 +01:00

@Sergey That seems to have solved it for me!