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Fix T77359: Crash adding UV's in edit-mode with linked duplicates

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This prevents UV layer mix up in
MeshBatchCache.cd_used/cd_needed/cd_used_over_time which depends on the
extraction method.

One object's mesh can be accessed with MR_EXTRACT_MESH, another object
that uses the same mesh can use MR_EXTRACT_BMESH based on
(Object.mode & OB_MODE_EDIT), this causes a problem as the edit-mesh
and the mesh aren't always in sync, the custom data layers wont
necessarily match up, causing T77359.

Reviewed by @jbakker, @brecht

Ref D8645
This commit is contained in:
Campbell Barton
2020-08-25 23:49:55 +10:00
parent 3ea324488a
commit 33ac3582bb
3 changed files with 24 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
source/blender/draw/intern/draw_cache_extract.h
View File

@@ -260,6 +260,7 @@ void mesh_buffer_cache_create_requested(struct TaskGraph *task_graph,
Mesh *me,
const bool is_editmode,
const bool is_paint_mode,
const bool is_mode_active,
const float obmat[4][4],
const bool do_final,
const bool do_uvedit,

14
source/blender/draw/intern/draw_cache_extract_mesh.c
View File

@@ -313,9 +313,14 @@ static void mesh_render_data_update_normals(MeshRenderData *mr,
}
}
/**
* \param is_mode_active: When true, use the modifiers from the edit-data,
* otherwise don't use modifiers as they are not from this object.
*/
static MeshRenderData *mesh_render_data_create(Mesh *me,
const bool is_editmode,
const bool is_paint_mode,
const bool is_mode_active,
const float obmat[4][4],
const bool do_final,
const bool do_uvedit,
@@ -335,7 +340,7 @@ static MeshRenderData *mesh_render_data_create(Mesh *me,
mr->bm = me->edit_mesh->bm;
mr->edit_bmesh = me->edit_mesh;
mr->me = (do_final) ? me->edit_mesh->mesh_eval_final : me->edit_mesh->mesh_eval_cage;
mr->edit_data = mr->me->runtime.edit_data;
mr->edit_data = is_mode_active ? mr->me->runtime.edit_data : NULL;
if (mr->edit_data) {
EditMeshData *emd = mr->edit_data;
@@ -350,8 +355,9 @@ static MeshRenderData *mesh_render_data_create(Mesh *me,
mr->bm_poly_centers = mr->edit_data->polyCos;
}
bool has_mdata = (mr->me->runtime.wrapper_type == ME_WRAPPER_TYPE_MDATA);
bool use_mapped = has_mdata && !do_uvedit && mr->me && !mr->me->runtime.is_original;
bool has_mdata = is_mode_active && (mr->me->runtime.wrapper_type == ME_WRAPPER_TYPE_MDATA);
bool use_mapped = is_mode_active &&
(has_mdata && !do_uvedit && mr->me && !mr->me->runtime.is_original);
int bm_ensure_types = BM_VERT | BM_EDGE | BM_LOOP | BM_FACE;
@@ -5412,6 +5418,7 @@ void mesh_buffer_cache_create_requested(struct TaskGraph *task_graph,
const bool is_editmode,
const bool is_paint_mode,
const bool is_mode_active,
const float obmat[4][4],
const bool do_final,
const bool do_uvedit,
@@ -5511,6 +5518,7 @@ void mesh_buffer_cache_create_requested(struct TaskGraph *task_graph,
MeshRenderData *mr = mesh_render_data_create(me,
is_editmode,
is_paint_mode,
is_mode_active,
obmat,
do_final,
do_uvedit,

13
source/blender/draw/intern/draw_cache_impl_mesh.c
View File

@@ -1187,7 +1187,15 @@ void DRW_mesh_batch_cache_create_requested(struct TaskGraph *task_graph,
BLI_assert(me->edit_mesh->mesh_eval_final != NULL);
}
const bool is_editmode = (me->edit_mesh != NULL) && DRW_object_is_in_edit_mode(ob);
/* Don't check `DRW_object_is_in_edit_mode(ob)` here because it means the same mesh
* may draw with edit-mesh data and regular mesh data.
* In this case the custom-data layers used wont always match in `me->runtime.batch_cache`.
* If we want to display regular mesh data, we should have a separate cache for the edit-mesh.
* See T77359. */
const bool is_editmode = (me->edit_mesh != NULL) /* && DRW_object_is_in_edit_mode(ob) */;
/* This could be set for paint mode too, currently it's only used for edit-mode. */
const bool is_mode_active = is_editmode && DRW_object_is_in_edit_mode(ob);
DRWBatchFlag batch_requested = cache->batch_requested;
cache->batch_requested = 0;
@@ -1508,6 +1516,7 @@ void DRW_mesh_batch_cache_create_requested(struct TaskGraph *task_graph,
me,
is_editmode,
is_paint_mode,
is_mode_active,
ob->obmat,
false,
true,
@@ -1525,6 +1534,7 @@ void DRW_mesh_batch_cache_create_requested(struct TaskGraph *task_graph,
me,
is_editmode,
is_paint_mode,
is_mode_active,
ob->obmat,
false,
false,
@@ -1541,6 +1551,7 @@ void DRW_mesh_batch_cache_create_requested(struct TaskGraph *task_graph,
me,
is_editmode,
is_paint_mode,
is_mode_active,
ob->obmat,
true,
false,