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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2005 by the Blender Foundation.
* All rights reserved.
*
* Contributor(s): Daniel Dunbar
* Ton Roosendaal,
* Ben Batt,
* Brecht Van Lommel,
* Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*
*/
/** \file blender/modifiers/intern/MOD_multires.c
* \ingroup modifiers
*/
#include <stddef.h>
#include "DNA_mesh_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "BLI_utildefines.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_global.h"
#include "BKE_mesh.h"
#include "BKE_multires.h"
#include "BKE_modifier.h"
#include "BKE_subdiv.h"
#include "BKE_subdiv_ccg.h"
#include "BKE_subdiv_mesh.h"
#include "BKE_subsurf.h"
#include "DEG_depsgraph_query.h"
#include "MOD_modifiertypes.h"
static void initData(ModifierData *md)
{
MultiresModifierData *mmd = (MultiresModifierData *)md;
mmd->lvl = 0;
mmd->sculptlvl = 0;
mmd->renderlvl = 0;
mmd->totlvl = 0;
mmd->uv_smooth = SUBSURF_UV_SMOOTH_PRESERVE_CORNERS;
mmd->quality = 3;
}
static DerivedMesh *applyModifier(
ModifierData *md, const ModifierEvalContext *ctx,
DerivedMesh *dm)
{
MultiresModifierData *mmd = (MultiresModifierData *)md;
struct Scene *scene = DEG_get_evaluated_scene(ctx->depsgraph);
DerivedMesh *result;
Mesh *me = (Mesh *)ctx->object->data;
const bool useRenderParams = (ctx->flag & MOD_APPLY_RENDER) != 0;
const bool ignore_simplify = (ctx->flag & MOD_APPLY_IGNORE_SIMPLIFY) != 0;
MultiresFlags flags = 0;
const bool has_mask = CustomData_has_layer(&me->ldata, CD_GRID_PAINT_MASK);
if (mmd->totlvl) {
if (!CustomData_get_layer(&me->ldata, CD_MDISPS)) {
/* multires always needs a displacement layer */
CustomData_add_layer(&me->ldata, CD_MDISPS, CD_CALLOC, NULL, me->totloop);
}
}
if (has_mask)
flags |= MULTIRES_ALLOC_PAINT_MASK;
if (useRenderParams)
flags |= MULTIRES_USE_RENDER_PARAMS;
if (ignore_simplify)
flags |= MULTIRES_IGNORE_SIMPLIFY;
result = multires_make_derived_from_derived(dm, mmd, scene, ctx->object, flags);
if (result == dm)
return dm;
if (useRenderParams || !(ctx->flag & MOD_APPLY_USECACHE)) {
DerivedMesh *cddm;
cddm = CDDM_copy(result);
/* copy hidden/masks to vertices */
if (!useRenderParams) {
struct MDisps *mdisps;
struct GridPaintMask *grid_paint_mask;
mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
grid_paint_mask = CustomData_get_layer(&me->ldata, CD_GRID_PAINT_MASK);
if (mdisps) {
subsurf_copy_grid_hidden(result, me->mpoly,
cddm->getVertArray(cddm),
mdisps);
BKE_mesh_flush_hidden_from_verts_ex(cddm->getVertArray(cddm),
cddm->getLoopArray(cddm),
cddm->getEdgeArray(cddm),
cddm->getNumEdges(cddm),
cddm->getPolyArray(cddm),
cddm->getNumPolys(cddm));
}
if (grid_paint_mask) {
float *paint_mask = CustomData_add_layer(&cddm->vertData,
CD_PAINT_MASK,
CD_CALLOC, NULL,
cddm->getNumVerts(cddm));
subsurf_copy_grid_paint_mask(result, me->mpoly,
paint_mask, grid_paint_mask);
}
}
result->release(result);
result = cddm;
}
return result;
}
#ifdef WITH_OPENSUBDIV_MODIFIER
/* Subdivide into fully qualified mesh. */
static Mesh *multires_as_mesh(MultiresModifierData *mmd,
const ModifierEvalContext *ctx,
Mesh *mesh,
Subdiv *subdiv)
{
Mesh *result = mesh;
const bool use_render_params = (ctx->flag & MOD_APPLY_RENDER);
const bool ignore_simplify = (ctx->flag & MOD_APPLY_IGNORE_SIMPLIFY);
const Scene *scene = DEG_get_evaluated_scene(ctx->depsgraph);
Object *object = ctx->object;
SubdivToMeshSettings mesh_settings;
BKE_multires_subdiv_mesh_settings_init(
&mesh_settings, scene, object, mmd, use_render_params, ignore_simplify);
if (mesh_settings.resolution < 3) {
return result;
}
BKE_subdiv_displacement_attach_from_multires(subdiv, mesh, mmd);
result = BKE_subdiv_to_mesh(subdiv, &mesh_settings, mesh);
return result;
}
/* Subdivide into CCG. */
static void multires_ccg_settings_init(SubdivToCCGSettings *settings,
const MultiresModifierData *mmd,
const ModifierEvalContext *ctx,
Mesh *mesh)
{
const bool has_mask =
CustomData_has_layer(&mesh->ldata, CD_GRID_PAINT_MASK);
const bool use_render_params = (ctx->flag & MOD_APPLY_RENDER);
const bool ignore_simplify = (ctx->flag & MOD_APPLY_IGNORE_SIMPLIFY);
const Scene *scene = DEG_get_evaluated_scene(ctx->depsgraph);
Object *object = ctx->object;
const int level = multires_get_level(
scene, object, mmd, use_render_params, ignore_simplify);
settings->resolution = (1 << level) + 1;
settings->need_normal = true;
settings->need_mask = has_mask;
}
static Mesh *multires_as_ccg(MultiresModifierData *mmd,
const ModifierEvalContext *ctx,
Mesh *mesh,
Subdiv *subdiv)
{
Mesh *result = mesh;
SubdivToCCGSettings ccg_settings;
multires_ccg_settings_init(&ccg_settings, mmd, ctx, mesh);
if (ccg_settings.resolution < 3) {
return result;
}
result = BKE_subdiv_to_ccg_mesh(subdiv, &ccg_settings, mesh);
return result;
}
static Mesh *applyModifier_subdiv(ModifierData *md,
const ModifierEvalContext *ctx,
Mesh *mesh)
{
Mesh *result = mesh;
MultiresModifierData *mmd = (MultiresModifierData *)md;
SubdivSettings subdiv_settings;
BKE_multires_subdiv_settings_init(&subdiv_settings, mmd);
if (subdiv_settings.level == 0) {
return result;
}
/* TODO(sergey): Try to re-use subdiv when possible. */
Subdiv *subdiv = BKE_subdiv_new_from_mesh(&subdiv_settings, mesh);
if (subdiv == NULL) {
/* Happens on bad topology, ut also on empty input mesh. */
return result;
}
/* TODO(sergey): Some of production machines are using OpenSubdiv already.
* so better not enable semi-finished multires sculpting for now. Will give
* a wrong impression that things do work, even though crucial areas are
* still missing in implementation.
*/
if ((ctx->object->mode & OB_MODE_SCULPT) && G.debug_value == 128) {
/* NOTE: CCG takes ownership over Subdiv. */
result = multires_as_ccg(mmd, ctx, mesh, subdiv);
// BKE_subdiv_stats_print(&subdiv->stats);
}
else {
result = multires_as_mesh(mmd, ctx, mesh, subdiv);
/* TODO(sergey): Cache subdiv somehow. */
// BKE_subdiv_stats_print(&subdiv->stats);
BKE_subdiv_free(subdiv);
}
return result;
}
#endif
ModifierTypeInfo modifierType_Multires = {
/* name */ "Multires",
/* structName */ "MultiresModifierData",
/* structSize */ sizeof(MultiresModifierData),
/* type */ eModifierTypeType_Constructive,
/* flags */ eModifierTypeFlag_AcceptsMesh |
eModifierTypeFlag_SupportsMapping |
eModifierTypeFlag_RequiresOriginalData,
/* copyData */ modifier_copyData_generic,
/* deformVerts_DM */ NULL,
/* deformMatrices_DM */ NULL,
/* deformVertsEM_DM */ NULL,
/* deformMatricesEM_DM*/NULL,
/* applyModifier_DM */ applyModifier,
/* applyModifierEM_DM */NULL,
/* deformVerts */ NULL,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
#ifdef WITH_OPENSUBDIV_MODIFIER
/* applyModifier */ applyModifier_subdiv,
#else
/* applyModifier */ NULL,
#endif
/* applyModifierEM */ NULL,
/* initData */ initData,
/* requiredDataMask */ NULL,
/* freeData */ NULL,
/* isDisabled */ NULL,
/* updateDepsgraph */ NULL,
/* dependsOnTime */ NULL,
/* dependsOnNormals */ NULL,
/* foreachObjectLink */ NULL,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
};
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