Sergey Sharybin
8fb0b9aebb
The general idea of this change is to have a runtime data pointer in the ModifierData, so it can be preserved through copy-on-write updates by the dependency graph. This is where subdivision surface modifier can store its topology cache, so it is not getting trashed on every copy-on-write which is happening when moving a vertex. Similar mechanism should be used by multiresolution, dynamic paint and some other modifiers which cache evaluated data. This fixes T61746. Thing to keep in mind, that there are more reports about slow subdivision surface in the tracker, but that boils down to the fact that those have a lot of extraordinary vertices, and hence a lot slower to evaluated topology. Other thing is, this speeds up oeprations which doesn't change topology (i.e. moving vertices). Reviewers: brecht Reviewed By: brecht Maniphest Tasks: T61746 Differential Revision: https://developer.blender.org/D4541
142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup modifiers
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*/
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#include "BLI_utildefines.h"
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#include "DNA_mesh_types.h"
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#include "DNA_object_types.h"
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#include "BKE_deform.h"
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#include "BKE_mesh.h"
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#include "MOD_modifiertypes.h"
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#include "bmesh.h"
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#include "tools/bmesh_wireframe.h"
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static void initData(ModifierData *md)
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{
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WireframeModifierData *wmd = (WireframeModifierData *)md;
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wmd->offset = 0.02f;
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wmd->flag = MOD_WIREFRAME_REPLACE | MOD_WIREFRAME_OFS_EVEN;
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wmd->crease_weight = 1.0f;
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}
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static void requiredDataMask(Object *UNUSED(ob), ModifierData *md, CustomData_MeshMasks *r_cddata_masks)
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{
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WireframeModifierData *wmd = (WireframeModifierData *)md;
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/* ask for vertexgroups if we need them */
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if (wmd->defgrp_name[0] != '\0') {
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r_cddata_masks->vmask |= CD_MASK_MDEFORMVERT;
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}
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}
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static bool dependsOnNormals(ModifierData *UNUSED(md))
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{
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return true;
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}
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static Mesh *WireframeModifier_do(WireframeModifierData *wmd, Object *ob, Mesh *mesh)
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{
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Mesh *result;
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BMesh *bm;
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const int defgrp_index = defgroup_name_index(ob, wmd->defgrp_name);
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bm = BKE_mesh_to_bmesh_ex(
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mesh,
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&(struct BMeshCreateParams){0},
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&(struct BMeshFromMeshParams){
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.calc_face_normal = true,
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.add_key_index = false,
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.use_shapekey = false,
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.active_shapekey = 0,
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.cd_mask_extra = {.vmask = CD_MASK_ORIGINDEX, .emask = CD_MASK_ORIGINDEX, .pmask = CD_MASK_ORIGINDEX},
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});
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BM_mesh_wireframe(
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bm,
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wmd->offset, wmd->offset_fac, wmd->offset_fac_vg,
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(wmd->flag & MOD_WIREFRAME_REPLACE) != 0,
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(wmd->flag & MOD_WIREFRAME_BOUNDARY) != 0,
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(wmd->flag & MOD_WIREFRAME_OFS_EVEN) != 0,
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(wmd->flag & MOD_WIREFRAME_OFS_RELATIVE) != 0,
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(wmd->flag & MOD_WIREFRAME_CREASE) != 0,
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wmd->crease_weight,
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defgrp_index,
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(wmd->flag & MOD_WIREFRAME_INVERT_VGROUP) != 0,
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wmd->mat_ofs,
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MAX2(ob->totcol - 1, 0),
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false);
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result = BKE_mesh_from_bmesh_for_eval_nomain(bm, NULL);
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BM_mesh_free(bm);
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result->runtime.cd_dirty_vert |= CD_MASK_NORMAL;
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return result;
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}
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static Mesh *applyModifier(
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ModifierData *md,
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const struct ModifierEvalContext *ctx,
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struct Mesh *mesh)
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{
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return WireframeModifier_do((WireframeModifierData *)md, ctx->object, mesh);
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}
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ModifierTypeInfo modifierType_Wireframe = {
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/* name */ "Wireframe",
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/* structName */ "WireframeModifierData",
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/* structSize */ sizeof(WireframeModifierData),
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/* type */ eModifierTypeType_Constructive,
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/* flags */ eModifierTypeFlag_AcceptsMesh |
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eModifierTypeFlag_SupportsEditmode,
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/* copyData */ modifier_copyData_generic,
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/* deformVerts_DM */ NULL,
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/* deformMatrices_DM */ NULL,
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/* deformVertsEM_DM */ NULL,
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/* deformMatricesEM_DM*/NULL,
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/* applyModifier_DM */ NULL,
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/* deformVerts */ NULL,
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/* deformMatrices */ NULL,
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/* deformVertsEM */ NULL,
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/* deformMatricesEM */ NULL,
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/* applyModifier */ applyModifier,
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/* initData */ initData,
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/* requiredDataMask */ requiredDataMask,
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/* freeData */ NULL,
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/* isDisabled */ NULL,
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/* updateDepgraph */ NULL,
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/* dependsOnTime */ NULL,
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/* dependsOnNormals */ dependsOnNormals,
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/* foreachObjectLink */ NULL,
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/* foreachIDLink */ NULL,
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/* foreachTexLink */ NULL,
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/* freeRuntimeData */ NULL,
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};
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