tmaq
/
tornavis
1
0
Fork 0
Code Issues 2 Pull Requests 29 Packages Projects 24 Releases Wiki Activity
tornavis/source/blender/blenkernel/intern/multires.c

2560 lines
73 KiB
C
Raw Blame History

/*
* 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) 2007 by Nicholas Bishop
* All rights reserved.
*/
/** \file
* \ingroup bke
*/
#include "MEM_guardedalloc.h"
/* for reading old multires */
#define DNA_DEPRECATED_ALLOW
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "BLI_bitmap.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "BLI_task.h"
#include "BKE_pbvh.h"
#include "BKE_ccg.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_mesh.h"
#include "BKE_mesh_mapping.h"
#include "BKE_mesh_runtime.h"
#include "BKE_modifier.h"
#include "BKE_multires.h"
#include "BKE_paint.h"
#include "BKE_scene.h"
#include "BKE_subdiv_ccg.h"
#include "BKE_subsurf.h"
#include "BKE_editmesh.h"
#include "BKE_object.h"
#include "CCGSubSurf.h"
#include "DEG_depsgraph_query.h"
#include <math.h>
#include <string.h>
/* MULTIRES MODIFIER */
static const int multires_max_levels = 13;
static const int multires_grid_tot[] = {
0, 4, 9, 25, 81, 289, 1089, 4225, 16641, 66049, 263169, 1050625, 4198401, 16785409};
static const int multires_side_tot[] = {
0, 2, 3, 5, 9, 17, 33, 65, 129, 257, 513, 1025, 2049, 4097};
/* See multiresModifier_disp_run for description of each operation */
typedef enum {
APPLY_DISPLACEMENTS,
CALC_DISPLACEMENTS,
ADD_DISPLACEMENTS,
} DispOp;
static void multires_mvert_to_ss(DerivedMesh *dm, MVert *mvert);
static void multiresModifier_disp_run(
DerivedMesh *dm, Mesh *me, DerivedMesh *dm2, DispOp op, CCGElem **oldGridData, int totlvl);
/** Customdata */
void multires_customdata_delete(Mesh *me)
{
if (me->edit_mesh) {
BMEditMesh *em = me->edit_mesh;
/* CustomData_external_remove is used here only to mark layer
* as non-external for further free-ing, so zero element count
* looks safer than em->totface */
CustomData_external_remove(&em->bm->ldata, &me->id, CD_MDISPS, 0);
BM_data_layer_free(em->bm, &em->bm->ldata, CD_MDISPS);
BM_data_layer_free(em->bm, &em->bm->ldata, CD_GRID_PAINT_MASK);
}
else {
CustomData_external_remove(&me->ldata, &me->id, CD_MDISPS, me->totloop);
CustomData_free_layer_active(&me->ldata, CD_MDISPS, me->totloop);
CustomData_free_layer_active(&me->ldata, CD_GRID_PAINT_MASK, me->totloop);
}
}
/** Grid hiding */
static BLI_bitmap *multires_mdisps_upsample_hidden(BLI_bitmap *lo_hidden,
int lo_level,
int hi_level,
/* assumed to be at hi_level (or null) */
const BLI_bitmap *prev_hidden)
{
BLI_bitmap *subd;
int hi_gridsize = BKE_ccg_gridsize(hi_level);
int lo_gridsize = BKE_ccg_gridsize(lo_level);
int yh, xh, xl, yl, xo, yo, hi_ndx;
int offset, factor;
BLI_assert(lo_level <= hi_level);
/* fast case */
if (lo_level == hi_level) {
return MEM_dupallocN(lo_hidden);
}
subd = BLI_BITMAP_NEW(SQUARE(hi_gridsize), "MDisps.hidden upsample");
factor = BKE_ccg_factor(lo_level, hi_level);
offset = 1 << (hi_level - lo_level - 1);
/* low-res blocks */
for (yl = 0; yl < lo_gridsize; yl++) {
for (xl = 0; xl < lo_gridsize; xl++) {
int lo_val = BLI_BITMAP_TEST(lo_hidden, yl * lo_gridsize + xl);
/* high-res blocks */
for (yo = -offset; yo <= offset; yo++) {
yh = yl * factor + yo;
if (yh < 0 || yh >= hi_gridsize) {
continue;
}
for (xo = -offset; xo <= offset; xo++) {
xh = xl * factor + xo;
if (xh < 0 || xh >= hi_gridsize) {
continue;
}
hi_ndx = yh * hi_gridsize + xh;
if (prev_hidden) {
/* If prev_hidden is available, copy it to
* subd, except when the equivalent element in
* lo_hidden is different */
if (lo_val != prev_hidden[hi_ndx]) {
BLI_BITMAP_SET(subd, hi_ndx, lo_val);
}
else {
BLI_BITMAP_SET(subd, hi_ndx, prev_hidden[hi_ndx]);
}
}
else {
BLI_BITMAP_SET(subd, hi_ndx, lo_val);
}
}
}
}
}
return subd;
}
static BLI_bitmap *multires_mdisps_downsample_hidden(BLI_bitmap *old_hidden,
int old_level,
int new_level)
{
BLI_bitmap *new_hidden;
int new_gridsize = BKE_ccg_gridsize(new_level);
int old_gridsize = BKE_ccg_gridsize(old_level);
int x, y, factor, old_value;
BLI_assert(new_level <= old_level);
factor = BKE_ccg_factor(new_level, old_level);
new_hidden = BLI_BITMAP_NEW(SQUARE(new_gridsize), "downsample hidden");
for (y = 0; y < new_gridsize; y++) {
for (x = 0; x < new_gridsize; x++) {
old_value = BLI_BITMAP_TEST(old_hidden, factor * y * old_gridsize + x * factor);
BLI_BITMAP_SET(new_hidden, y * new_gridsize + x, old_value);
}
}
return new_hidden;
}
static void multires_output_hidden_to_ccgdm(CCGDerivedMesh *ccgdm, Mesh *me, int level)
{
const MDisps *mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
BLI_bitmap **grid_hidden = ccgdm->gridHidden;
int *gridOffset;
int i, j;
gridOffset = ccgdm->dm.getGridOffset(&ccgdm->dm);
for (i = 0; i < me->totpoly; i++) {
for (j = 0; j < me->mpoly[i].totloop; j++) {
int g = gridOffset[i] + j;
const MDisps *md = &mdisps[g];
BLI_bitmap *gh = md->hidden;
if (gh) {
grid_hidden[g] = multires_mdisps_downsample_hidden(gh, md->level, level);
}
}
}
}
/* subdivide mdisps.hidden if needed (assumes that md.level reflects
* the current level of md.hidden) */
static void multires_mdisps_subdivide_hidden(MDisps *md, int new_level)
{
BLI_bitmap *subd;
BLI_assert(md->hidden);
/* nothing to do if already subdivided enough */
if (md->level >= new_level) {
return;
}
subd = multires_mdisps_upsample_hidden(md->hidden, md->level, new_level, NULL);
/* swap in the subdivided data */
MEM_freeN(md->hidden);
md->hidden = subd;
}
static MDisps *multires_mdisps_initialize_hidden(Mesh *me, int level)
{
MDisps *mdisps = CustomData_add_layer(&me->ldata, CD_MDISPS, CD_CALLOC, NULL, me->totloop);
int gridsize = BKE_ccg_gridsize(level);
int gridarea = SQUARE(gridsize);
int i, j;
for (i = 0; i < me->totpoly; i++) {
bool hide = false;
for (j = 0; j < me->mpoly[i].totloop; j++) {
if (me->mvert[me->mloop[me->mpoly[i].loopstart + j].v].flag & ME_HIDE) {
hide = true;
break;
}
}
if (!hide) {
continue;
}
for (j = 0; j < me->mpoly[i].totloop; j++) {
MDisps *md = &mdisps[me->mpoly[i].loopstart + j];
BLI_assert(!md->hidden);
md->hidden = BLI_BITMAP_NEW(gridarea, "MDisps.hidden initialize");
BLI_bitmap_set_all(md->hidden, true, gridarea);
}
}
return mdisps;
}
Mesh *BKE_multires_create_mesh(struct Depsgraph *depsgraph,
Scene *scene,
MultiresModifierData *mmd,
Object *ob)
{
Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
Mesh *deformed_mesh = mesh_get_eval_deform(depsgraph, scene, ob_eval, &CD_MASK_BAREMESH);
ModifierEvalContext modifier_ctx = {
.depsgraph = depsgraph,
.object = ob_eval,
.flag = MOD_APPLY_USECACHE | MOD_APPLY_IGNORE_SIMPLIFY,
};
const ModifierTypeInfo *mti = modifierType_getInfo(mmd->modifier.type);
Mesh *result = mti->applyModifier(&mmd->modifier, &modifier_ctx, deformed_mesh);
if (result == deformed_mesh) {
result = BKE_mesh_copy_for_eval(deformed_mesh, true);
}
return result;
}
MultiresModifierData *find_multires_modifier_before(Scene *scene, ModifierData *lastmd)
{
ModifierData *md;
for (md = lastmd; md; md = md->prev) {
if (md->type == eModifierType_Multires) {
if (modifier_isEnabled(scene, md, eModifierMode_Realtime)) {
return (MultiresModifierData *)md;
}
}
}
return NULL;
}
/* used for applying scale on mdisps layer and syncing subdivide levels when joining objects
* use_first - return first multires modifier if all multires'es are disabled
*/
MultiresModifierData *get_multires_modifier(Scene *scene, Object *ob, bool use_first)
{
ModifierData *md;
MultiresModifierData *mmd = NULL, *firstmmd = NULL;
/* find first active multires modifier */
for (md = ob->modifiers.first; md; md = md->next) {
if (md->type == eModifierType_Multires) {
if (!firstmmd) {
firstmmd = (MultiresModifierData *)md;
}
if (modifier_isEnabled(scene, md, eModifierMode_Realtime)) {
mmd = (MultiresModifierData *)md;
break;
}
}
}
if (!mmd && use_first) {
/* active multires have not been found
* try to use first one */
return firstmmd;
}
return mmd;
}
int multires_get_level(const Scene *scene,
const Object *ob,
const MultiresModifierData *mmd,
bool render,
bool ignore_simplify)
{
if (render) {
return (scene != NULL) ? get_render_subsurf_level(&scene->r, mmd->renderlvl, true) :
mmd->renderlvl;
}
else if (ob->mode == OB_MODE_SCULPT) {
return mmd->sculptlvl;
}
else if (ignore_simplify) {
return mmd->lvl;
}
else {
return (scene != NULL) ? get_render_subsurf_level(&scene->r, mmd->lvl, false) : mmd->lvl;
}
}
void multires_set_tot_level(Object *ob, MultiresModifierData *mmd, int lvl)
{
mmd->totlvl = lvl;
if (ob->mode != OB_MODE_SCULPT) {
mmd->lvl = CLAMPIS(MAX2(mmd->lvl, lvl), 0, mmd->totlvl);
}
mmd->sculptlvl = CLAMPIS(MAX2(mmd->sculptlvl, lvl), 0, mmd->totlvl);
mmd->renderlvl = CLAMPIS(MAX2(mmd->renderlvl, lvl), 0, mmd->totlvl);
}
static void multires_dm_mark_as_modified(DerivedMesh *dm, MultiresModifiedFlags flags)
{
CCGDerivedMesh *ccgdm = (CCGDerivedMesh *)dm;
ccgdm->multires.modified_flags |= flags;
}
static void multires_ccg_mark_as_modified(SubdivCCG *subdiv_ccg, MultiresModifiedFlags flags)
{
if (flags & MULTIRES_COORDS_MODIFIED) {
subdiv_ccg->dirty.coords = true;
}
if (flags & MULTIRES_HIDDEN_MODIFIED) {
subdiv_ccg->dirty.hidden = true;
}
}
void multires_mark_as_modified(Depsgraph *depsgraph, Object *object, MultiresModifiedFlags flags)
{
if (object == NULL) {
return;
}
/* NOTE: CCG live inside of evaluated object.
*
* While this is a bit weird to tag the only one, this is how other areas were built
* historically: they are tagging multires for update and then rely on object re-evaluation to
* do an actual update.
*
* In a longer term maybe special dependency graph tag can help sanitizing this a bit. */
Object *object_eval = DEG_get_evaluated_object(depsgraph, object);
Mesh *mesh = object_eval->data;
SubdivCCG *subdiv_ccg = mesh->runtime.subdiv_ccg;
if (subdiv_ccg == NULL) {
return;
}
multires_ccg_mark_as_modified(subdiv_ccg, flags);
}
void multires_flush_sculpt_updates(Object *ob)
{
if (ob && ob->sculpt && ob->sculpt->pbvh != NULL) {
SculptSession *sculpt_session = ob->sculpt;
if (BKE_pbvh_type(sculpt_session->pbvh) == PBVH_GRIDS) {
Mesh *mesh = ob->data;
multiresModifier_reshapeFromCCG(
sculpt_session->multires->totlvl, mesh, sculpt_session->subdiv_ccg);
}
}
}
void multires_force_sculpt_rebuild(Object *ob)
{
multires_flush_sculpt_updates(ob);
if (ob && ob->sculpt) {
SculptSession *ss = ob->sculpt;
if (ss->pbvh) {
BKE_pbvh_free(ss->pbvh);
ob->sculpt->pbvh = NULL;
}
if (ss->pmap) {
MEM_freeN(ss->pmap);
ss->pmap = NULL;
}
if (ss->pmap_mem) {
MEM_freeN(ss->pmap_mem);
ss->pmap_mem = NULL;
}
}
}
void multires_force_external_reload(Object *ob)
{
Mesh *me = BKE_mesh_from_object(ob);
CustomData_external_reload(&me->ldata, &me->id, CD_MASK_MDISPS, me->totloop);
multires_force_sculpt_rebuild(ob);
}
/* reset the multires levels to match the number of mdisps */
static int get_levels_from_disps(Object *ob)
{
Mesh *me = ob->data;
MDisps *mdisp, *md;
int i, j, totlvl = 0;
mdisp = CustomData_get_layer(&me->ldata, CD_MDISPS);
for (i = 0; i < me->totpoly; i++) {
md = mdisp + me->mpoly[i].loopstart;
for (j = 0; j < me->mpoly[i].totloop; j++, md++) {
if (md->totdisp == 0) {
continue;
}
while (1) {
int side = (1 << (totlvl - 1)) + 1;
int lvl_totdisp = side * side;
if (md->totdisp == lvl_totdisp) {
break;
}
else if (md->totdisp < lvl_totdisp) {
totlvl--;
}
else {
totlvl++;
}
}
break;
}
}
return totlvl;
}
/* reset the multires levels to match the number of mdisps */
void multiresModifier_set_levels_from_disps(MultiresModifierData *mmd, Object *ob)
{
Mesh *me = ob->data;
MDisps *mdisp;
if (me->edit_mesh) {
mdisp = CustomData_get_layer(&me->edit_mesh->bm->ldata, CD_MDISPS);
}
else {
mdisp = CustomData_get_layer(&me->ldata, CD_MDISPS);
}
if (mdisp) {
mmd->totlvl = get_levels_from_disps(ob);
mmd->lvl = MIN2(mmd->sculptlvl, mmd->totlvl);
mmd->sculptlvl = MIN2(mmd->sculptlvl, mmd->totlvl);
mmd->renderlvl = MIN2(mmd->renderlvl, mmd->totlvl);
}
}
static void multires_set_tot_mdisps(Mesh *me, int lvl)
{
MDisps *mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
int i;
if (mdisps) {
for (i = 0; i < me->totloop; i++, mdisps++) {
mdisps->totdisp = multires_grid_tot[lvl];
mdisps->level = lvl;
}
}
}
static void multires_reallocate_mdisps(int totloop, MDisps *mdisps, int lvl)
{
int i;
/* reallocate displacements to be filled in */
for (i = 0; i < totloop; i++) {
int totdisp = multires_grid_tot[lvl];
float(*disps)[3] = MEM_calloc_arrayN(totdisp, 3 * sizeof(float), "multires disps");
if (mdisps[i].disps) {
MEM_freeN(mdisps[i].disps);
}
if (mdisps[i].level && mdisps[i].hidden) {
multires_mdisps_subdivide_hidden(&mdisps[i], lvl);
}
mdisps[i].disps = disps;
mdisps[i].totdisp = totdisp;
mdisps[i].level = lvl;
}
}
static void multires_copy_grid(float (*gridA)[3], float (*gridB)[3], int sizeA, int sizeB)
{
int x, y, j, skip;
if (sizeA > sizeB) {
skip = (sizeA - 1) / (sizeB - 1);
for (j = 0, y = 0; y < sizeB; y++) {
for (x = 0; x < sizeB; x++, j++) {
copy_v3_v3(gridA[y * skip * sizeA + x * skip], gridB[j]);
}
}
}
else {
skip = (sizeB - 1) / (sizeA - 1);
for (j = 0, y = 0; y < sizeA; y++) {
for (x = 0; x < sizeA; x++, j++) {
copy_v3_v3(gridA[j], gridB[y * skip * sizeB + x * skip]);
}
}
}
}
static void multires_copy_dm_grid(CCGElem *gridA, CCGElem *gridB, CCGKey *keyA, CCGKey *keyB)
{
int x, y, j, skip;
if (keyA->grid_size > keyB->grid_size) {
skip = (keyA->grid_size - 1) / (keyB->grid_size - 1);
for (j = 0, y = 0; y < keyB->grid_size; y++) {
for (x = 0; x < keyB->grid_size; x++, j++) {
memcpy(CCG_elem_offset_co(keyA, gridA, y * skip * keyA->grid_size + x * skip),
CCG_elem_offset_co(keyB, gridB, j),
keyA->elem_size);
}
}
}
else {
skip = (keyB->grid_size - 1) / (keyA->grid_size - 1);
for (j = 0, y = 0; y < keyA->grid_size; y++) {
for (x = 0; x < keyA->grid_size; x++, j++) {
memcpy(CCG_elem_offset_co(keyA, gridA, j),
CCG_elem_offset_co(keyB, gridB, y * skip * keyB->grid_size + x * skip),
keyA->elem_size);
}
}
}
}
/* Reallocate gpm->data at a lower resolution and copy values over
* from the original high-resolution data */
static void multires_grid_paint_mask_downsample(GridPaintMask *gpm, int level)
{
if (level < gpm->level) {
int gridsize = BKE_ccg_gridsize(level);
float *data = MEM_calloc_arrayN(
SQUARE(gridsize), sizeof(float), "multires_grid_paint_mask_downsample");
int x, y;
for (y = 0; y < gridsize; y++) {
for (x = 0; x < gridsize; x++) {
data[y * gridsize + x] = paint_grid_paint_mask(gpm, level, x, y);
}
}
MEM_freeN(gpm->data);
gpm->data = data;
gpm->level = level;
}
}
static void multires_del_higher(MultiresModifierData *mmd, Object *ob, int lvl)
{
Mesh *me = (Mesh *)ob->data;
int levels = mmd->totlvl - lvl;
MDisps *mdisps;
GridPaintMask *gpm;
multires_set_tot_mdisps(me, mmd->totlvl);
CustomData_external_read(&me->ldata, &me->id, CD_MASK_MDISPS, me->totloop);
mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
gpm = CustomData_get_layer(&me->ldata, CD_GRID_PAINT_MASK);
multires_force_sculpt_rebuild(ob);
if (mdisps && levels > 0) {
if (lvl > 0) {
/* MLoop *ml = me->mloop; */ /*UNUSED*/
int nsize = multires_side_tot[lvl];
int hsize = multires_side_tot[mmd->totlvl];
int i, j;
for (i = 0; i < me->totpoly; i++) {
for (j = 0; j < me->mpoly[i].totloop; j++) {
int g = me->mpoly[i].loopstart + j;
MDisps *mdisp = &mdisps[g];
float(*disps)[3], (*ndisps)[3], (*hdisps)[3];
int totdisp = multires_grid_tot[lvl];
disps = MEM_calloc_arrayN(totdisp, 3 * sizeof(float), "multires disps");
if (mdisp->disps != NULL) {
ndisps = disps;
hdisps = mdisp->disps;
multires_copy_grid(ndisps, hdisps, nsize, hsize);
if (mdisp->hidden) {
BLI_bitmap *gh = multires_mdisps_downsample_hidden(mdisp->hidden, mdisp->level, lvl);
MEM_freeN(mdisp->hidden);
mdisp->hidden = gh;
}
MEM_freeN(mdisp->disps);
}
mdisp->disps = disps;
mdisp->totdisp = totdisp;
mdisp->level = lvl;
if (gpm) {
multires_grid_paint_mask_downsample(&gpm[g], lvl);
}
}
}
}
else {
multires_customdata_delete(me);
}
}
multires_set_tot_level(ob, mmd, lvl);
}
/* (direction = 1) for delete higher, (direction = 0) for lower (not implemented yet) */
void multiresModifier_del_levels(MultiresModifierData *mmd,
Scene *scene,
Object *ob,
int direction)
{
Mesh *me = BKE_mesh_from_object(ob);
int lvl = multires_get_level(scene, ob, mmd, false, true);
int levels = mmd->totlvl - lvl;
MDisps *mdisps;
multires_set_tot_mdisps(me, mmd->totlvl);
CustomData_external_read(&me->ldata, &me->id, CD_MASK_MDISPS, me->totloop);
mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
multires_force_sculpt_rebuild(ob);
if (mdisps && levels > 0 && direction == 1) {
multires_del_higher(mmd, ob, lvl);
}
multires_set_tot_level(ob, mmd, lvl);
}
static DerivedMesh *multires_dm_create_local(Scene *scene,
Object *ob,
DerivedMesh *dm,
int lvl,
int totlvl,
int simple,
bool alloc_paint_mask,
int flags)
{
MultiresModifierData mmd = {{NULL}};
mmd.lvl = lvl;
mmd.sculptlvl = lvl;
mmd.renderlvl = lvl;
mmd.totlvl = totlvl;
mmd.simple = simple;
flags |= MULTIRES_USE_LOCAL_MMD;
if (alloc_paint_mask) {
flags |= MULTIRES_ALLOC_PAINT_MASK;
}
return multires_make_derived_from_derived(dm, &mmd, scene, ob, flags);
}
static DerivedMesh *subsurf_dm_create_local(Scene *scene,
Object *ob,
DerivedMesh *dm,
int lvl,
bool is_simple,
bool is_optimal,
bool is_plain_uv,
bool alloc_paint_mask,
bool for_render,
SubsurfFlags flags)
{
SubsurfModifierData smd = {{NULL}};
smd.levels = smd.renderLevels = lvl;
smd.quality = 3;
if (!is_plain_uv) {
smd.uv_smooth = SUBSURF_UV_SMOOTH_PRESERVE_CORNERS;
}
else {
smd.uv_smooth = SUBSURF_UV_SMOOTH_NONE;
}
if (is_simple) {
smd.subdivType = ME_SIMPLE_SUBSURF;
}
if (is_optimal) {
smd.flags |= eSubsurfModifierFlag_ControlEdges;
}
if (ob->mode & OB_MODE_EDIT) {
flags |= SUBSURF_IN_EDIT_MODE;
}
if (alloc_paint_mask) {
flags |= SUBSURF_ALLOC_PAINT_MASK;
}
if (for_render) {
flags |= SUBSURF_USE_RENDER_PARAMS;
}
return subsurf_make_derived_from_derived(dm, &smd, scene, NULL, flags);
}
/* assumes no is normalized; return value's sign is negative if v is on
* the other side of the plane */
static float v3_dist_from_plane(float v[3], float center[3], float no[3])
{
float s[3];
sub_v3_v3v3(s, v, center);
return dot_v3v3(s, no);
}
void multiresModifier_base_apply(MultiresModifierData *mmd, Scene *scene, Object *ob)
{
DerivedMesh *cddm, *dispdm, *origdm;
Mesh *me;
const MeshElemMap *pmap;
float(*origco)[3];
int i, j, k, offset, totlvl;
multires_force_sculpt_rebuild(ob);
me = BKE_mesh_from_object(ob);
totlvl = mmd->totlvl;
/* nothing to do */
if (!totlvl) {
return;
}
/* XXX - probably not necessary to regenerate the cddm so much? */
/* generate highest level with displacements */
cddm = CDDM_from_mesh(me);
DM_set_only_copy(cddm, &CD_MASK_BAREMESH);
dispdm = multires_dm_create_local(
scene, ob, cddm, totlvl, totlvl, 0, 0, MULTIRES_IGNORE_SIMPLIFY);
cddm->release(cddm);
/* copy the new locations of the base verts into the mesh */
offset = dispdm->getNumVerts(dispdm) - me->totvert;
for (i = 0; i < me->totvert; i++) {
dispdm->getVertCo(dispdm, offset + i, me->mvert[i].co);
}
/* heuristic to produce a better-fitting base mesh */
cddm = CDDM_from_mesh(me);
pmap = cddm->getPolyMap(ob, cddm);
origco = MEM_calloc_arrayN(me->totvert, 3 * sizeof(float), "multires apply base origco");
for (i = 0; i < me->totvert; i++) {
copy_v3_v3(origco[i], me->mvert[i].co);
}
for (i = 0; i < me->totvert; i++) {
float avg_no[3] = {0, 0, 0}, center[3] = {0, 0, 0}, push[3];
float dist;
int tot = 0;
/* don't adjust verts not used by at least one poly */
if (!pmap[i].count) {
continue;
}
/* find center */
for (j = 0; j < pmap[i].count; j++) {
const MPoly *p = &me->mpoly[pmap[i].indices[j]];
/* this double counts, not sure if that's bad or good */
for (k = 0; k < p->totloop; k++) {
int vndx = me->mloop[p->loopstart + k].v;
if (vndx != i) {
add_v3_v3(center, origco[vndx]);
tot++;
}
}
}
mul_v3_fl(center, 1.0f / tot);
/* find normal */
for (j = 0; j < pmap[i].count; j++) {
const MPoly *p = &me->mpoly[pmap[i].indices[j]];
MPoly fake_poly;
MLoop *fake_loops;
float(*fake_co)[3];
float no[3];
/* set up poly, loops, and coords in order to call
* BKE_mesh_calc_poly_normal_coords() */
fake_poly.totloop = p->totloop;
fake_poly.loopstart = 0;
fake_loops = MEM_malloc_arrayN(p->totloop, sizeof(MLoop), "fake_loops");
fake_co = MEM_malloc_arrayN(p->totloop, 3 * sizeof(float), "fake_co");
for (k = 0; k < p->totloop; k++) {
int vndx = me->mloop[p->loopstart + k].v;
fake_loops[k].v = k;
if (vndx == i) {
copy_v3_v3(fake_co[k], center);
}
else {
copy_v3_v3(fake_co[k], origco[vndx]);
}
}
BKE_mesh_calc_poly_normal_coords(&fake_poly, fake_loops, (const float(*)[3])fake_co, no);
MEM_freeN(fake_loops);
MEM_freeN(fake_co);
add_v3_v3(avg_no, no);
}
normalize_v3(avg_no);
/* push vertex away from the plane */
dist = v3_dist_from_plane(me->mvert[i].co, center, avg_no);
copy_v3_v3(push, avg_no);
mul_v3_fl(push, dist);
add_v3_v3(me->mvert[i].co, push);
}
MEM_freeN(origco);
cddm->release(cddm);
/* Vertices were moved around, need to update normals after all the vertices are updated
* Probably this is possible to do in the loop above, but this is rather tricky because
* we don't know all needed vertices' coordinates there yet.
*/
BKE_mesh_calc_normals(me);
/* subdivide the mesh to highest level without displacements */
cddm = CDDM_from_mesh(me);
DM_set_only_copy(cddm, &CD_MASK_BAREMESH);
origdm = subsurf_dm_create_local(scene,
ob,
cddm,
totlvl,
0,
0,
mmd->uv_smooth == SUBSURF_UV_SMOOTH_NONE,
0,
false,
SUBSURF_IGNORE_SIMPLIFY);
cddm->release(cddm);
/* calc disps */
multiresModifier_disp_run(
dispdm, me, NULL, CALC_DISPLACEMENTS, origdm->getGridData(origdm), totlvl);
origdm->release(origdm);
dispdm->release(dispdm);
}
static void multires_subdivide(
MultiresModifierData *mmd, Scene *scene, Object *ob, int totlvl, int updateblock, int simple)
{
Mesh *me = ob->data;
MDisps *mdisps;
const int lvl = mmd->totlvl;
if ((totlvl > multires_max_levels) || (me->totpoly == 0)) {
return;
}
BLI_assert(totlvl > lvl);
multires_force_sculpt_rebuild(ob);
mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
if (!mdisps) {
mdisps = multires_mdisps_initialize_hidden(me, totlvl);
}
if (mdisps->disps && !updateblock && lvl != 0) {
/* upsample */
DerivedMesh *lowdm, *cddm, *highdm;
CCGElem **highGridData, **lowGridData, **subGridData;
CCGKey highGridKey, lowGridKey;
CCGSubSurf *ss;
int i, numGrids, highGridSize;
const bool has_mask = CustomData_has_layer(&me->ldata, CD_GRID_PAINT_MASK);
/* create subsurf DM from original mesh at high level */
cddm = CDDM_from_mesh(me);
DM_set_only_copy(cddm, &CD_MASK_BAREMESH);
highdm = subsurf_dm_create_local(NULL,
ob,
cddm,
totlvl,
simple,
0,
mmd->uv_smooth == SUBSURF_UV_SMOOTH_NONE,
has_mask,
false,
SUBSURF_IGNORE_SIMPLIFY);
ss = ((CCGDerivedMesh *)highdm)->ss;
/* create multires DM from original mesh at low level */
lowdm = multires_dm_create_local(
scene, ob, cddm, lvl, lvl, simple, has_mask, MULTIRES_IGNORE_SIMPLIFY);
BLI_assert(lowdm != cddm);
cddm->release(cddm);
/* copy subsurf grids and replace them with low displaced grids */
numGrids = highdm->getNumGrids(highdm);
highGridSize = highdm->getGridSize(highdm);
highGridData = highdm->getGridData(highdm);
highdm->getGridKey(highdm, &highGridKey);
lowGridData = lowdm->getGridData(lowdm);
lowdm->getGridKey(lowdm, &lowGridKey);
subGridData = MEM_calloc_arrayN(numGrids, sizeof(float *), "subGridData*");
for (i = 0; i < numGrids; i++) {
/* backup subsurf grids */
subGridData[i] = MEM_calloc_arrayN(
highGridKey.elem_size, highGridSize * highGridSize, "subGridData");
memcpy(subGridData[i], highGridData[i], highGridKey.elem_size * highGridSize * highGridSize);
/* overwrite with current displaced grids */
multires_copy_dm_grid(highGridData[i], lowGridData[i], &highGridKey, &lowGridKey);
}
/* low lower level dm no longer needed at this point */
lowdm->release(lowdm);
/* subsurf higher levels again with displaced data */
ccgSubSurf_updateFromFaces(ss, lvl, NULL, 0);
ccgSubSurf_updateLevels(ss, lvl, NULL, 0);
/* reallocate displacements */
multires_reallocate_mdisps(me->totloop, mdisps, totlvl);
/* compute displacements */
multiresModifier_disp_run(highdm, me, NULL, CALC_DISPLACEMENTS, subGridData, totlvl);
/* free */
highdm->release(highdm);
for (i = 0; i < numGrids; i++) {
MEM_freeN(subGridData[i]);
}
MEM_freeN(subGridData);
}
else {
/* only reallocate, nothing to upsample */
multires_reallocate_mdisps(me->totloop, mdisps, totlvl);
}
multires_set_tot_level(ob, mmd, totlvl);
}
void multiresModifier_subdivide(
MultiresModifierData *mmd, Scene *scene, Object *ob, int updateblock, int simple)
{
multires_subdivide(mmd, scene, ob, mmd->totlvl + 1, updateblock, simple);
}
static void grid_tangent(const CCGKey *key, int x, int y, int axis, CCGElem *grid, float t[3])
{
if (axis == 0) {
if (x == key->grid_size - 1) {
if (y == key->grid_size - 1) {
sub_v3_v3v3(
t, CCG_grid_elem_co(key, grid, x, y - 1), CCG_grid_elem_co(key, grid, x - 1, y - 1));
}
else {
sub_v3_v3v3(t, CCG_grid_elem_co(key, grid, x, y), CCG_grid_elem_co(key, grid, x - 1, y));
}
}
else {
sub_v3_v3v3(t, CCG_grid_elem_co(key, grid, x + 1, y), CCG_grid_elem_co(key, grid, x, y));
}
}
else if (axis == 1) {
if (y == key->grid_size - 1) {
if (x == key->grid_size - 1) {
sub_v3_v3v3(
t, CCG_grid_elem_co(key, grid, x - 1, y), CCG_grid_elem_co(key, grid, x - 1, (y - 1)));
}
else {
sub_v3_v3v3(t, CCG_grid_elem_co(key, grid, x, y), CCG_grid_elem_co(key, grid, x, (y - 1)));
}
}
else {
sub_v3_v3v3(t, CCG_grid_elem_co(key, grid, x, (y + 1)), CCG_grid_elem_co(key, grid, x, y));
}
}
}
/* Construct 3x3 tangent-space matrix in 'mat' */
static void grid_tangent_matrix(float mat[3][3], const CCGKey *key, int x, int y, CCGElem *grid)
{
grid_tangent(key, x, y, 0, grid, mat[0]);
normalize_v3(mat[0]);
grid_tangent(key, x, y, 1, grid, mat[1]);
normalize_v3(mat[1]);
copy_v3_v3(mat[2], CCG_grid_elem_no(key, grid, x, y));
}
typedef struct MultiresThreadedData {
DispOp op;
CCGElem **gridData, **subGridData;
CCGKey *key;
CCGKey *sub_key;
MPoly *mpoly;
MDisps *mdisps;
GridPaintMask *grid_paint_mask;
int *gridOffset;
int gridSize, dGridSize, dSkip;
float (*smat)[3];
} MultiresThreadedData;
static void multires_disp_run_cb(void *__restrict userdata,
const int pidx,
const TaskParallelTLS *__restrict UNUSED(tls))
{
MultiresThreadedData *tdata = userdata;
DispOp op = tdata->op;
CCGElem **gridData = tdata->gridData;
CCGElem **subGridData = tdata->subGridData;
CCGKey *key = tdata->key;
MPoly *mpoly = tdata->mpoly;
MDisps *mdisps = tdata->mdisps;
GridPaintMask *grid_paint_mask = tdata->grid_paint_mask;
int *gridOffset = tdata->gridOffset;
int gridSize = tdata->gridSize;
int dGridSize = tdata->dGridSize;
int dSkip = tdata->dSkip;
const int numVerts = mpoly[pidx].totloop;
int S, x, y, gIndex = gridOffset[pidx];
for (S = 0; S < numVerts; S++, gIndex++) {
GridPaintMask *gpm = grid_paint_mask ? &grid_paint_mask[gIndex] : NULL;
MDisps *mdisp = &mdisps[mpoly[pidx].loopstart + S];
CCGElem *grid = gridData[gIndex];
CCGElem *subgrid = subGridData[gIndex];
float(*dispgrid)[3] = NULL;
dispgrid = mdisp->disps;
/* if needed, reallocate multires paint mask */
if (gpm && gpm->level < key->level) {
gpm->level = key->level;
if (gpm->data) {
MEM_freeN(gpm->data);
}
gpm->data = MEM_calloc_arrayN(key->grid_area, sizeof(float), "gpm.data");
}
for (y = 0; y < gridSize; y++) {
for (x = 0; x < gridSize; x++) {
float *co = CCG_grid_elem_co(key, grid, x, y);
float *sco = CCG_grid_elem_co(key, subgrid, x, y);
float *data = dispgrid[dGridSize * y * dSkip + x * dSkip];
float mat[3][3], disp[3], d[3], mask;
/* construct tangent space matrix */
grid_tangent_matrix(mat, key, x, y, subgrid);
switch (op) {
case APPLY_DISPLACEMENTS:
/* Convert displacement to object space
* and add to grid points */
mul_v3_m3v3(disp, mat, data);
add_v3_v3v3(co, sco, disp);
break;
case CALC_DISPLACEMENTS:
/* Calculate displacement between new and old
* grid points and convert to tangent space */
sub_v3_v3v3(disp, co, sco);
invert_m3(mat);
mul_v3_m3v3(data, mat, disp);
break;
case ADD_DISPLACEMENTS:
/* Convert subdivided displacements to tangent
* space and add to the original displacements */
invert_m3(mat);
mul_v3_m3v3(d, mat, co);
add_v3_v3(data, d);
break;
}
if (gpm) {
switch (op) {
case APPLY_DISPLACEMENTS:
/* Copy mask from gpm to DM */
*CCG_grid_elem_mask(key, grid, x, y) = paint_grid_paint_mask(gpm, key->level, x, y);
break;
case CALC_DISPLACEMENTS:
/* Copy mask from DM to gpm */
mask = *CCG_grid_elem_mask(key, grid, x, y);
gpm->data[y * gridSize + x] = CLAMPIS(mask, 0, 1);
break;
case ADD_DISPLACEMENTS:
/* Add mask displacement to gpm */
gpm->data[y * gridSize + x] += *CCG_grid_elem_mask(key, grid, x, y);
break;
}
}
}
}
}
}
/* XXX WARNING: subsurf elements from dm and oldGridData *must* be of the same format (size),
* because this code uses CCGKey's info from dm to access oldGridData's normals
* (through the call to grid_tangent_matrix())! */
static void multiresModifier_disp_run(
DerivedMesh *dm, Mesh *me, DerivedMesh *dm2, DispOp op, CCGElem **oldGridData, int totlvl)
{
CCGDerivedMesh *ccgdm = (CCGDerivedMesh *)dm;
CCGElem **gridData, **subGridData;
CCGKey key;
MPoly *mpoly = me->mpoly;
MDisps *mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
GridPaintMask *grid_paint_mask = NULL;
int *gridOffset;
int i, gridSize, dGridSize, dSkip;
int totloop, totpoly;
/* this happens in the dm made by bmesh_mdisps_space_set */
if (dm2 && CustomData_has_layer(&dm2->loopData, CD_MDISPS)) {
mpoly = CustomData_get_layer(&dm2->polyData, CD_MPOLY);
mdisps = CustomData_get_layer(&dm2->loopData, CD_MDISPS);
totloop = dm2->numLoopData;
totpoly = dm2->numPolyData;
}
else {
totloop = me->totloop;
totpoly = me->totpoly;
}
if (!mdisps) {
if (op == CALC_DISPLACEMENTS) {
mdisps = CustomData_add_layer(&me->ldata, CD_MDISPS, CD_DEFAULT, NULL, me->totloop);
}
else {
return;
}
}
/*numGrids = dm->getNumGrids(dm);*/ /*UNUSED*/
gridSize = dm->getGridSize(dm);
gridData = dm->getGridData(dm);
gridOffset = dm->getGridOffset(dm);
dm->getGridKey(dm, &key);
subGridData = (oldGridData) ? oldGridData : gridData;
dGridSize = multires_side_tot[totlvl];
dSkip = (dGridSize - 1) / (gridSize - 1);
/* multires paint masks */
if (key.has_mask) {
grid_paint_mask = CustomData_get_layer(&me->ldata, CD_GRID_PAINT_MASK);
}
/* when adding new faces in edit mode, need to allocate disps */
for (i = 0; i < totloop; i++) {
if (mdisps[i].disps == NULL) {
multires_reallocate_mdisps(totloop, mdisps, totlvl);
break;
}
}
TaskParallelSettings settings;
BLI_parallel_range_settings_defaults(&settings);
settings.min_iter_per_thread = CCG_TASK_LIMIT;
MultiresThreadedData data = {
.op = op,
.gridData = gridData,
.subGridData = subGridData,
.key = &key,
.mpoly = mpoly,
.mdisps = mdisps,
.grid_paint_mask = grid_paint_mask,
.gridOffset = gridOffset,
.gridSize = gridSize,
.dGridSize = dGridSize,
.dSkip = dSkip,
};
BLI_task_parallel_range(0, totpoly, &data, multires_disp_run_cb, &settings);
if (op == APPLY_DISPLACEMENTS) {
ccgSubSurf_stitchFaces(ccgdm->ss, 0, NULL, 0);
ccgSubSurf_updateNormals(ccgdm->ss, NULL, 0);
}
}
void multires_modifier_update_mdisps(struct DerivedMesh *dm, Scene *scene)
{
CCGDerivedMesh *ccgdm = (CCGDerivedMesh *)dm;
Object *ob;
Mesh *me;
MDisps *mdisps;
MultiresModifierData *mmd;
ob = ccgdm->multires.ob;
me = ccgdm->multires.ob->data;
mmd = ccgdm->multires.mmd;
multires_set_tot_mdisps(me, mmd->totlvl);
CustomData_external_read(&me->ldata, &me->id, CD_MASK_MDISPS, me->totloop);
mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
if (mdisps) {
int lvl = ccgdm->multires.lvl;
int totlvl = ccgdm->multires.totlvl;
if (lvl < totlvl) {
DerivedMesh *lowdm, *cddm, *highdm;
CCGElem **highGridData, **lowGridData, **subGridData, **gridData, *diffGrid;
CCGKey highGridKey, lowGridKey;
CCGSubSurf *ss;
int i, j, numGrids, highGridSize, lowGridSize;
const bool has_mask = CustomData_has_layer(&me->ldata, CD_GRID_PAINT_MASK);
/* create subsurf DM from original mesh at high level */
if (ob->derivedDeform) {
cddm = CDDM_copy(ob->derivedDeform);
}
else {
cddm = CDDM_from_mesh(me);
}
DM_set_only_copy(cddm, &CD_MASK_BAREMESH);
highdm = subsurf_dm_create_local(scene,
ob,
cddm,
totlvl,
mmd->simple,
0,
mmd->uv_smooth == SUBSURF_UV_SMOOTH_NONE,
has_mask,
false,
SUBSURF_IGNORE_SIMPLIFY);
ss = ((CCGDerivedMesh *)highdm)->ss;
/* create multires DM from original mesh and displacements */
lowdm = multires_dm_create_local(
scene, ob, cddm, lvl, totlvl, mmd->simple, has_mask, MULTIRES_IGNORE_SIMPLIFY);
cddm->release(cddm);
/* gather grid data */
numGrids = highdm->getNumGrids(highdm);
highGridSize = highdm->getGridSize(highdm);
highGridData = highdm->getGridData(highdm);
highdm->getGridKey(highdm, &highGridKey);
lowGridSize = lowdm->getGridSize(lowdm);
lowGridData = lowdm->getGridData(lowdm);
lowdm->getGridKey(lowdm, &lowGridKey);
gridData = dm->getGridData(dm);
BLI_assert(highGridKey.elem_size == lowGridKey.elem_size);
subGridData = MEM_calloc_arrayN(numGrids, sizeof(CCGElem *), "subGridData*");
diffGrid = MEM_calloc_arrayN(lowGridKey.elem_size, lowGridSize * lowGridSize, "diff");
for (i = 0; i < numGrids; i++) {
/* backup subsurf grids */
subGridData[i] = MEM_calloc_arrayN(
highGridKey.elem_size, highGridSize * highGridSize, "subGridData");
memcpy(
subGridData[i], highGridData[i], highGridKey.elem_size * highGridSize * highGridSize);
/* write difference of subsurf and displaced low level into high subsurf */
for (j = 0; j < lowGridSize * lowGridSize; j++) {
sub_v4_v4v4(CCG_elem_offset_co(&lowGridKey, diffGrid, j),
CCG_elem_offset_co(&lowGridKey, gridData[i], j),
CCG_elem_offset_co(&lowGridKey, lowGridData[i], j));
}
multires_copy_dm_grid(highGridData[i], diffGrid, &highGridKey, &lowGridKey);
}
/* lower level dm no longer needed at this point */
MEM_freeN(diffGrid);
lowdm->release(lowdm);
/* subsurf higher levels again with difference of coordinates */
ccgSubSurf_updateFromFaces(ss, lvl, NULL, 0);
ccgSubSurf_updateLevels(ss, lvl, NULL, 0);
/* add to displacements */
multiresModifier_disp_run(highdm, me, NULL, ADD_DISPLACEMENTS, subGridData, mmd->totlvl);
/* free */
highdm->release(highdm);
for (i = 0; i < numGrids; i++) {
MEM_freeN(subGridData[i]);
}
MEM_freeN(subGridData);
}
else {
DerivedMesh *cddm, *subdm;
const bool has_mask = CustomData_has_layer(&me->ldata, CD_GRID_PAINT_MASK);
if (ob->derivedDeform) {
cddm = CDDM_copy(ob->derivedDeform);
}
else {
cddm = CDDM_from_mesh(me);
}
DM_set_only_copy(cddm, &CD_MASK_BAREMESH);
subdm = subsurf_dm_create_local(scene,
ob,
cddm,
mmd->totlvl,
mmd->simple,
0,
mmd->uv_smooth == SUBSURF_UV_SMOOTH_NONE,
has_mask,
false,
SUBSURF_IGNORE_SIMPLIFY);
cddm->release(cddm);
multiresModifier_disp_run(
dm, me, NULL, CALC_DISPLACEMENTS, subdm->getGridData(subdm), mmd->totlvl);
subdm->release(subdm);
}
}
}
void multires_modifier_update_hidden(DerivedMesh *dm)
{
CCGDerivedMesh *ccgdm = (CCGDerivedMesh *)dm;
BLI_bitmap **grid_hidden = ccgdm->gridHidden;
Mesh *me = ccgdm->multires.ob->data;
MDisps *mdisps = CustomData_get_layer(&me->ldata, CD_MDISPS);
int totlvl = ccgdm->multires.totlvl;
int lvl = ccgdm->multires.lvl;
if (mdisps) {
int i;
for (i = 0; i < me->totloop; i++) {
MDisps *md = &mdisps[i];
BLI_bitmap *gh = grid_hidden[i];
if (!gh && md->hidden) {
MEM_freeN(md->hidden);
md->hidden = NULL;
}
else if (gh) {
gh = multires_mdisps_upsample_hidden(gh, lvl, totlvl, md->hidden);
if (md->hidden) {
MEM_freeN(md->hidden);
}
md->hidden = gh;
}
}
}
}
void multires_stitch_grids(Object *ob)
{
if (ob == NULL) {
return;
}
SculptSession *sculpt_session = ob->sculpt;
if (sculpt_session == NULL) {
return;
}
PBVH *pbvh = sculpt_session->pbvh;
SubdivCCG *subdiv_ccg = sculpt_session->subdiv_ccg;
if (pbvh == NULL || subdiv_ccg == NULL) {
return;
}
BLI_assert(BKE_pbvh_type(pbvh) == PBVH_GRIDS);
/* NOTE: Currently CCG does not keep track of faces, making it impossible
* to use BKE_pbvh_get_grid_updates().
*/
CCGFace **faces;
int num_faces;
BKE_pbvh_get_grid_updates(pbvh, false, (void ***)&faces, &num_faces);
if (num_faces) {
BKE_subdiv_ccg_average_stitch_faces(subdiv_ccg, faces, num_faces);
MEM_freeN(faces);
}
}
DerivedMesh *multires_make_derived_from_derived(
DerivedMesh *dm, MultiresModifierData *mmd, Scene *scene, Object *ob, MultiresFlags flags)
{
Mesh *me = ob->data;
DerivedMesh *result;
CCGDerivedMesh *ccgdm = NULL;
CCGElem **gridData, **subGridData;
CCGKey key;
const bool render = (flags & MULTIRES_USE_RENDER_PARAMS) != 0;
const bool ignore_simplify = (flags & MULTIRES_IGNORE_SIMPLIFY) != 0;
int lvl = multires_get_level(scene, ob, mmd, render, ignore_simplify);
int i, gridSize, numGrids;
if (lvl == 0) {
return dm;
}
const int subsurf_flags = ignore_simplify ? SUBSURF_IGNORE_SIMPLIFY : 0;
result = subsurf_dm_create_local(scene,
ob,
dm,
lvl,
mmd->simple,
mmd->flags & eMultiresModifierFlag_ControlEdges,
mmd->uv_smooth == SUBSURF_UV_SMOOTH_NONE,
flags & MULTIRES_ALLOC_PAINT_MASK,
render,
subsurf_flags);
if (!(flags & MULTIRES_USE_LOCAL_MMD)) {
ccgdm = (CCGDerivedMesh *)result;
ccgdm->multires.ob = ob;
ccgdm->multires.mmd = mmd;
ccgdm->multires.local_mmd = 0;
ccgdm->multires.lvl = lvl;
ccgdm->multires.totlvl = mmd->totlvl;
ccgdm->multires.modified_flags = 0;
}
numGrids = result->getNumGrids(result);
gridSize = result->getGridSize(result);
gridData = result->getGridData(result);
result->getGridKey(result, &key);
subGridData = MEM_malloc_arrayN(numGrids, sizeof(CCGElem *), "subGridData*");
for (i = 0; i < numGrids; i++) {
subGridData[i] = MEM_malloc_arrayN(key.elem_size, gridSize * gridSize, "subGridData");
memcpy(subGridData[i], gridData[i], key.elem_size * gridSize * gridSize);
}
multires_set_tot_mdisps(me, mmd->totlvl);
CustomData_external_read(&me->ldata, &me->id, CD_MASK_MDISPS, me->totloop);
/*run displacement*/
multiresModifier_disp_run(result, ob->data, dm, APPLY_DISPLACEMENTS, subGridData, mmd->totlvl);
/* copy hidden elements for this level */
if (ccgdm) {
multires_output_hidden_to_ccgdm(ccgdm, me, lvl);
}
for (i = 0; i < numGrids; i++) {
MEM_freeN(subGridData[i]);
}
MEM_freeN(subGridData);
return result;
}
/**** Old Multires code ****
***************************/
/* Adapted from sculptmode.c */
void old_mdisps_bilinear(float out[3], float (*disps)[3], const int st, float u, float v)
{
int x, y, x2, y2;
const int st_max = st - 1;
float urat, vrat, uopp;
float d[4][3], d2[2][3];
if (!disps || isnan(u) || isnan(v)) {
return;
}
if (u < 0) {
u = 0;
}
else if (u >= st) {
u = st_max;
}
if (v < 0) {
v = 0;
}
else if (v >= st) {
v = st_max;
}
x = floor(u);
y = floor(v);
x2 = x + 1;
y2 = y + 1;
if (x2 >= st) {
x2 = st_max;
}
if (y2 >= st) {
y2 = st_max;
}
urat = u - x;
vrat = v - y;
uopp = 1 - urat;
mul_v3_v3fl(d[0], disps[y * st + x], uopp);
mul_v3_v3fl(d[1], disps[y * st + x2], urat);
mul_v3_v3fl(d[2], disps[y2 * st + x], uopp);
mul_v3_v3fl(d[3], disps[y2 * st + x2], urat);
add_v3_v3v3(d2[0], d[0], d[1]);
add_v3_v3v3(d2[1], d[2], d[3]);
mul_v3_fl(d2[0], 1 - vrat);
mul_v3_fl(d2[1], vrat);
add_v3_v3v3(out, d2[0], d2[1]);
}
static void old_mdisps_rotate(
int S, int UNUSED(newside), int oldside, int x, int y, float *u, float *v)
{
float offset = oldside * 0.5f - 0.5f;
if (S == 1) {
*u = offset + x;
*v = offset - y;
}
if (S == 2) {
*u = offset + y;
*v = offset + x;
}
if (S == 3) {
*u = offset - x;
*v = offset + y;
}
if (S == 0) {
*u = offset - y;
*v = offset - x;
}
}
static void old_mdisps_convert(MFace *mface, MDisps *mdisp)
{
int newlvl = log(sqrt(mdisp->totdisp) - 1) / M_LN2;
int oldlvl = newlvl + 1;
int oldside = multires_side_tot[oldlvl];
int newside = multires_side_tot[newlvl];
int nvert = (mface->v4) ? 4 : 3;
int newtotdisp = multires_grid_tot[newlvl] * nvert;
int x, y, S;
float(*disps)[3], (*out)[3], u = 0.0f, v = 0.0f; /* Quite gcc barking. */
disps = MEM_calloc_arrayN(newtotdisp, 3 * sizeof(float), "multires disps");
out = disps;
for (S = 0; S < nvert; S++) {
for (y = 0; y < newside; y++) {
for (x = 0; x < newside; x++, out++) {
old_mdisps_rotate(S, newside, oldside, x, y, &u, &v);
old_mdisps_bilinear(*out, mdisp->disps, oldside, u, v);
if (S == 1) {
(*out)[1] = -(*out)[1];
}
else if (S == 2) {
SWAP(float, (*out)[0], (*out)[1]);
}
else if (S == 3) {
(*out)[0] = -(*out)[0];
}
else if (S == 0) {
SWAP(float, (*out)[0], (*out)[1]);
(*out)[0] = -(*out)[0];
(*out)[1] = -(*out)[1];
}
}
}
}
MEM_freeN(mdisp->disps);
mdisp->totdisp = newtotdisp;
mdisp->level = newlvl;
mdisp->disps = disps;
}
void multires_load_old_250(Mesh *me)
{
MDisps *mdisps, *mdisps2;
MFace *mf;
int i, j, k;
mdisps = CustomData_get_layer(&me->fdata, CD_MDISPS);
if (mdisps) {
for (i = 0; i < me->totface; i++) {
if (mdisps[i].totdisp) {
old_mdisps_convert(&me->mface[i], &mdisps[i]);
}
}
CustomData_add_layer(&me->ldata, CD_MDISPS, CD_CALLOC, NULL, me->totloop);
mdisps2 = CustomData_get_layer(&me->ldata, CD_MDISPS);
k = 0;
mf = me->mface;
for (i = 0; i < me->totface; i++, mf++) {
int nvert = mf->v4 ? 4 : 3;
int totdisp = mdisps[i].totdisp / nvert;
for (j = 0; j < nvert; j++, k++) {
mdisps2[k].disps = MEM_calloc_arrayN(
totdisp, 3 * sizeof(float), "multires disp in conversion");
mdisps2[k].totdisp = totdisp;
mdisps2[k].level = mdisps[i].level;
memcpy(mdisps2[k].disps, mdisps[i].disps + totdisp * j, totdisp);
}
}
}
}
/* Does not actually free lvl itself */
static void multires_free_level(MultiresLevel *lvl)
{
if (lvl) {
if (lvl->faces) {
MEM_freeN(lvl->faces);
}
if (lvl->edges) {
MEM_freeN(lvl->edges);
}
if (lvl->colfaces) {
MEM_freeN(lvl->colfaces);
}
}
}
void multires_free(Multires *mr)
{
if (mr) {
MultiresLevel *lvl = mr->levels.first;
/* Free the first-level data */
if (lvl) {
CustomData_free(&mr->vdata, lvl->totvert);
CustomData_free(&mr->fdata, lvl->totface);
if (mr->edge_flags) {
MEM_freeN(mr->edge_flags);
}
if (mr->edge_creases) {
MEM_freeN(mr->edge_creases);
}
}
while (lvl) {
multires_free_level(lvl);
lvl = lvl->next;
}
/* mr->verts may be NULL when loading old files,
* see direct_link_mesh() in readfile.c, and T43560. */
MEM_SAFE_FREE(mr->verts);
BLI_freelistN(&mr->levels);
MEM_freeN(mr);
}
}
typedef struct IndexNode {
struct IndexNode *next, *prev;
int index;
} IndexNode;
static void create_old_vert_face_map(ListBase **map,
IndexNode **mem,
const MultiresFace *mface,
const int totvert,
const int totface)
{
int i, j;
IndexNode *node = NULL;
(*map) = MEM_calloc_arrayN(totvert, sizeof(ListBase), "vert face map");
(*mem) = MEM_calloc_arrayN(totface, 4 * sizeof(IndexNode), "vert face map mem");
node = *mem;
/* Find the users */
for (i = 0; i < totface; i++) {
for (j = 0; j < (mface[i].v[3] ? 4 : 3); j++, node++) {
node->index = i;
BLI_addtail(&(*map)[mface[i].v[j]], node);
}
}
}
static void create_old_vert_edge_map(ListBase **map,
IndexNode **mem,
const MultiresEdge *medge,
const int totvert,
const int totedge)
{
int i, j;
IndexNode *node = NULL;
(*map) = MEM_calloc_arrayN(totvert, sizeof(ListBase), "vert edge map");
(*mem) = MEM_calloc_arrayN(totedge, 2 * sizeof(IndexNode), "vert edge map mem");
node = *mem;
/* Find the users */
for (i = 0; i < totedge; i++) {
for (j = 0; j < 2; j++, node++) {
node->index = i;
BLI_addtail(&(*map)[medge[i].v[j]], node);
}
}
}
static MultiresFace *find_old_face(
ListBase *map, MultiresFace *faces, int v1, int v2, int v3, int v4)
{
IndexNode *n1;
int v[4], i, j;
v[0] = v1;
v[1] = v2;
v[2] = v3;
v[3] = v4;
for (n1 = map[v1].first; n1; n1 = n1->next) {
int fnd[4] = {0, 0, 0, 0};
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
if (v[i] == faces[n1->index].v[j]) {
fnd[i] = 1;
}
}
}
if (fnd[0] && fnd[1] && fnd[2] && fnd[3]) {
return &faces[n1->index];
}
}
return NULL;
}
static MultiresEdge *find_old_edge(ListBase *map, MultiresEdge *edges, int v1, int v2)
{
IndexNode *n1, *n2;
for (n1 = map[v1].first; n1; n1 = n1->next) {
for (n2 = map[v2].first; n2; n2 = n2->next) {
if (n1->index == n2->index) {
return &edges[n1->index];
}
}
}
return NULL;
}
static void multires_load_old_edges(
ListBase **emap, MultiresLevel *lvl, int *vvmap, int dst, int v1, int v2, int mov)
{
int emid = find_old_edge(emap[2], lvl->edges, v1, v2)->mid;
vvmap[dst + mov] = emid;
if (lvl->next->next) {
multires_load_old_edges(emap + 1, lvl->next, vvmap, dst + mov, v1, emid, mov / 2);
multires_load_old_edges(emap + 1, lvl->next, vvmap, dst + mov, v2, emid, -mov / 2);
}
}
static void multires_load_old_faces(ListBase **fmap,
ListBase **emap,
MultiresLevel *lvl,
int *vvmap,
int dst,
int v1,
int v2,
int v3,
int v4,
int st2,
int st3)
{
int fmid;
int emid13, emid14, emid23, emid24;
if (lvl && lvl->next) {
fmid = find_old_face(fmap[1], lvl->faces, v1, v2, v3, v4)->mid;
vvmap[dst] = fmid;
emid13 = find_old_edge(emap[1], lvl->edges, v1, v3)->mid;
emid14 = find_old_edge(emap[1], lvl->edges, v1, v4)->mid;
emid23 = find_old_edge(emap[1], lvl->edges, v2, v3)->mid;
emid24 = find_old_edge(emap[1], lvl->edges, v2, v4)->mid;
multires_load_old_faces(fmap + 1,
emap + 1,
lvl->next,
vvmap,
dst + st2 * st3 + st3,
fmid,
v2,
emid23,
emid24,
st2,
st3 / 2);
multires_load_old_faces(fmap + 1,
emap + 1,
lvl->next,
vvmap,
dst - st2 * st3 + st3,
emid14,
emid24,
fmid,
v4,
st2,
st3 / 2);
multires_load_old_faces(fmap + 1,
emap + 1,
lvl->next,
vvmap,
dst + st2 * st3 - st3,
emid13,
emid23,
v3,
fmid,
st2,
st3 / 2);
multires_load_old_faces(fmap + 1,
emap + 1,
lvl->next,
vvmap,
dst - st2 * st3 - st3,
v1,
fmid,
emid13,
emid14,
st2,
st3 / 2);
if (lvl->next->next) {
multires_load_old_edges(emap, lvl->next, vvmap, dst, emid24, fmid, st3);
multires_load_old_edges(emap, lvl->next, vvmap, dst, emid13, fmid, -st3);
multires_load_old_edges(emap, lvl->next, vvmap, dst, emid14, fmid, -st2 * st3);
multires_load_old_edges(emap, lvl->next, vvmap, dst, emid23, fmid, st2 * st3);
}
}
}
static void multires_mvert_to_ss(DerivedMesh *dm, MVert *mvert)
{
CCGDerivedMesh *ccgdm = (CCGDerivedMesh *)dm;
CCGSubSurf *ss = ccgdm->ss;
CCGElem *vd;
CCGKey key;
int index;
int totvert, totedge, totface;
int gridSize = ccgSubSurf_getGridSize(ss);
int edgeSize = ccgSubSurf_getEdgeSize(ss);
int i = 0;
dm->getGridKey(dm, &key);
totface = ccgSubSurf_getNumFaces(ss);
for (index = 0; index < totface; index++) {
CCGFace *f = ccgdm->faceMap[index].face;
int x, y, S, numVerts = ccgSubSurf_getFaceNumVerts(f);
vd = ccgSubSurf_getFaceCenterData(f);
copy_v3_v3(CCG_elem_co(&key, vd), mvert[i].co);
i++;
for (S = 0; S < numVerts; S++) {
for (x = 1; x < gridSize - 1; x++, i++) {
vd = ccgSubSurf_getFaceGridEdgeData(ss, f, S, x);
copy_v3_v3(CCG_elem_co(&key, vd), mvert[i].co);
}
}
for (S = 0; S < numVerts; S++) {
for (y = 1; y < gridSize - 1; y++) {
for (x = 1; x < gridSize - 1; x++, i++) {
vd = ccgSubSurf_getFaceGridData(ss, f, S, x, y);
copy_v3_v3(CCG_elem_co(&key, vd), mvert[i].co);
}
}
}
}
totedge = ccgSubSurf_getNumEdges(ss);
for (index = 0; index < totedge; index++) {
CCGEdge *e = ccgdm->edgeMap[index].edge;
int x;
for (x = 1; x < edgeSize - 1; x++, i++) {
vd = ccgSubSurf_getEdgeData(ss, e, x);
copy_v3_v3(CCG_elem_co(&key, vd), mvert[i].co);
}
}
totvert = ccgSubSurf_getNumVerts(ss);
for (index = 0; index < totvert; index++) {
CCGVert *v = ccgdm->vertMap[index].vert;
vd = ccgSubSurf_getVertData(ss, v);
copy_v3_v3(CCG_elem_co(&key, vd), mvert[i].co);
i++;
}
ccgSubSurf_updateToFaces(ss, 0, NULL, 0);
}
/* Loads a multires object stored in the old Multires struct into the new format */
static void multires_load_old_dm(DerivedMesh *dm, Mesh *me, int totlvl)
{
MultiresLevel *lvl, *lvl1;
Multires *mr = me->mr;
MVert *vsrc, *vdst;
unsigned int src, dst;
int st_last = multires_side_tot[totlvl - 1] - 1;
int extedgelen = multires_side_tot[totlvl] - 2;
int *vvmap; // inorder for dst, map to src
int crossedgelen;
int s, x, tottri, totquad;
unsigned int i, j, totvert;
src = 0;
vsrc = mr->verts;
vdst = dm->getVertArray(dm);
totvert = (unsigned int)dm->getNumVerts(dm);
vvmap = MEM_calloc_arrayN(totvert, sizeof(int), "multires vvmap");
if (!vvmap) {
return;
}
lvl1 = mr->levels.first;
/* Load base verts */
for (i = 0; i < lvl1->totvert; i++) {
vvmap[totvert - lvl1->totvert + i] = src;
src++;
}
/* Original edges */
dst = totvert - lvl1->totvert - extedgelen * lvl1->totedge;
for (i = 0; i < lvl1->totedge; i++) {
int ldst = dst + extedgelen * i;
int lsrc = src;
lvl = lvl1->next;
for (j = 2; j <= mr->level_count; j++) {
int base = multires_side_tot[totlvl - j + 1] - 2;
int skip = multires_side_tot[totlvl - j + 2] - 1;
int st = multires_side_tot[j - 1] - 1;
for (x = 0; x < st; x++) {
vvmap[ldst + base + x * skip] = lsrc + st * i + x;
}
lsrc += lvl->totvert - lvl->prev->totvert;
lvl = lvl->next;
}
}
/* Center points */
dst = 0;
for (i = 0; i < lvl1->totface; i++) {
int sides = lvl1->faces[i].v[3] ? 4 : 3;
vvmap[dst] = src + lvl1->totedge + i;
dst += 1 + sides * (st_last - 1) * st_last;
}
/* The rest is only for level 3 and up */
if (lvl1->next && lvl1->next->next) {
ListBase **fmap, **emap;
IndexNode **fmem, **emem;
/* Face edge cross */
tottri = totquad = 0;
crossedgelen = multires_side_tot[totlvl - 1] - 2;
dst = 0;
for (i = 0; i < lvl1->totface; i++) {
int sides = lvl1->faces[i].v[3] ? 4 : 3;
lvl = lvl1->next->next;
dst++;
for (j = 3; j <= mr->level_count; j++) {
int base = multires_side_tot[totlvl - j + 1] - 2;
int skip = multires_side_tot[totlvl - j + 2] - 1;
int st = pow(2, j - 2);
int st2 = pow(2, j - 3);
int lsrc = lvl->prev->totvert;
/* Skip exterior edge verts */
lsrc += lvl1->totedge * st;
/* Skip earlier face edge crosses */
lsrc += st2 * (tottri * 3 + totquad * 4);
for (s = 0; s < sides; s++) {
for (x = 0; x < st2; x++) {
vvmap[dst + crossedgelen * (s + 1) - base - x * skip - 1] = lsrc;
lsrc++;
}
}
lvl = lvl->next;
}
dst += sides * (st_last - 1) * st_last;
if (sides == 4) {
totquad++;
}
else {
tottri++;
}
}
/* calculate vert to edge/face maps for each level (except the last) */
fmap = MEM_calloc_arrayN((mr->level_count - 1), sizeof(ListBase *), "multires fmap");
emap = MEM_calloc_arrayN((mr->level_count - 1), sizeof(ListBase *), "multires emap");
fmem = MEM_calloc_arrayN((mr->level_count - 1), sizeof(IndexNode *), "multires fmem");
emem = MEM_calloc_arrayN((mr->level_count - 1), sizeof(IndexNode *), "multires emem");
lvl = lvl1;
for (i = 0; i < (unsigned int)mr->level_count - 1; i++) {
create_old_vert_face_map(fmap + i, fmem + i, lvl->faces, lvl->totvert, lvl->totface);
create_old_vert_edge_map(emap + i, emem + i, lvl->edges, lvl->totvert, lvl->totedge);
lvl = lvl->next;
}
/* Interior face verts */
/* lvl = lvl1->next->next; */ /* UNUSED */
dst = 0;
for (j = 0; j < lvl1->totface; j++) {
int sides = lvl1->faces[j].v[3] ? 4 : 3;
int ldst = dst + 1 + sides * (st_last - 1);
for (s = 0; s < sides; s++) {
int st2 = multires_side_tot[totlvl - 1] - 2;
int st3 = multires_side_tot[totlvl - 2] - 2;
int st4 = st3 == 0 ? 1 : (st3 + 1) / 2;
int mid = ldst + st2 * st3 + st3;
int cv = lvl1->faces[j].v[s];
int nv = lvl1->faces[j].v[s == sides - 1 ? 0 : s + 1];
int pv = lvl1->faces[j].v[s == 0 ? sides - 1 : s - 1];
multires_load_old_faces(fmap,
emap,
lvl1->next,
vvmap,
mid,
vvmap[dst],
cv,
find_old_edge(emap[0], lvl1->edges, pv, cv)->mid,
find_old_edge(emap[0], lvl1->edges, cv, nv)->mid,
st2,
st4);
ldst += (st_last - 1) * (st_last - 1);
}
dst = ldst;
}
/*lvl = lvl->next;*/ /*UNUSED*/
for (i = 0; i < (unsigned int)(mr->level_count - 1); i++) {
MEM_freeN(fmap[i]);
MEM_freeN(fmem[i]);
MEM_freeN(emap[i]);
MEM_freeN(emem[i]);
}
MEM_freeN(fmap);
MEM_freeN(emap);
MEM_freeN(fmem);
MEM_freeN(emem);
}
/* Transfer verts */
for (i = 0; i < totvert; i++) {
copy_v3_v3(vdst[i].co, vsrc[vvmap[i]].co);
}
MEM_freeN(vvmap);
multires_mvert_to_ss(dm, vdst);
}
/* Copy the first-level vcol data to the mesh, if it exists */
/* Warning: higher-level vcol data will be lost */
static void multires_load_old_vcols(Mesh *me)
{
MultiresLevel *lvl;
MultiresColFace *colface;
MCol *mcol;
int i, j;
if (!(lvl = me->mr->levels.first)) {
return;
}
if (!(colface = lvl->colfaces)) {
return;
}
/* older multires format never supported multiple vcol layers,
* so we can assume the active vcol layer is the correct one */
if (!(mcol = CustomData_get_layer(&me->fdata, CD_MCOL))) {
return;
}
for (i = 0; i < me->totface; i++) {
for (j = 0; j < 4; j++) {
mcol[i * 4 + j].a = colface[i].col[j].a;
mcol[i * 4 + j].r = colface[i].col[j].r;
mcol[i * 4 + j].g = colface[i].col[j].g;
mcol[i * 4 + j].b = colface[i].col[j].b;
}
}
}
/* Copy the first-level face-flag data to the mesh */
static void multires_load_old_face_flags(Mesh *me)
{
MultiresLevel *lvl;
MultiresFace *faces;
int i;
if (!(lvl = me->mr->levels.first)) {
return;
}
if (!(faces = lvl->faces)) {
return;
}
for (i = 0; i < me->totface; i++) {
me->mface[i].flag = faces[i].flag;
}
}
void multires_load_old(Object *ob, Mesh *me)
{
MultiresLevel *lvl;
ModifierData *md;
MultiresModifierData *mmd;
DerivedMesh *dm, *orig;
CustomDataLayer *l;
int i;
/* Load original level into the mesh */
lvl = me->mr->levels.first;
CustomData_free_layers(&me->vdata, CD_MVERT, lvl->totvert);
CustomData_free_layers(&me->edata, CD_MEDGE, lvl->totedge);
CustomData_free_layers(&me->fdata, CD_MFACE, lvl->totface);
me->totvert = lvl->totvert;
me->totedge = lvl->totedge;
me->totface = lvl->totface;
me->mvert = CustomData_add_layer(&me->vdata, CD_MVERT, CD_CALLOC, NULL, me->totvert);
me->medge = CustomData_add_layer(&me->edata, CD_MEDGE, CD_CALLOC, NULL, me->totedge);
me->mface = CustomData_add_layer(&me->fdata, CD_MFACE, CD_CALLOC, NULL, me->totface);
memcpy(me->mvert, me->mr->verts, sizeof(MVert) * me->totvert);
for (i = 0; i < me->totedge; i++) {
me->medge[i].v1 = lvl->edges[i].v[0];
me->medge[i].v2 = lvl->edges[i].v[1];
}
for (i = 0; i < me->totface; i++) {
me->mface[i].v1 = lvl->faces[i].v[0];
me->mface[i].v2 = lvl->faces[i].v[1];
me->mface[i].v3 = lvl->faces[i].v[2];
me->mface[i].v4 = lvl->faces[i].v[3];
me->mface[i].mat_nr = lvl->faces[i].mat_nr;
}
/* Copy the first-level data to the mesh */
/* XXX We must do this before converting tessfaces to polys/lopps! */
for (i = 0, l = me->mr->vdata.layers; i < me->mr->vdata.totlayer; i++, l++) {
CustomData_add_layer(&me->vdata, l->type, CD_REFERENCE, l->data, me->totvert);
}
for (i = 0, l = me->mr->fdata.layers; i < me->mr->fdata.totlayer; i++, l++) {
CustomData_add_layer(&me->fdata, l->type, CD_REFERENCE, l->data, me->totface);
}
CustomData_reset(&me->mr->vdata);
CustomData_reset(&me->mr->fdata);
multires_load_old_vcols(me);
multires_load_old_face_flags(me);
/* multiresModifier_subdivide (actually, multires_subdivide) expects polys, not tessfaces! */
BKE_mesh_convert_mfaces_to_mpolys(me);
/* Add a multires modifier to the object */
md = ob->modifiers.first;
while (md && modifierType_getInfo(md->type)->type == eModifierTypeType_OnlyDeform) {
md = md->next;
}
mmd = (MultiresModifierData *)modifier_new(eModifierType_Multires);
BLI_insertlinkbefore(&ob->modifiers, md, mmd);
for (i = 0; i < me->mr->level_count - 1; i++) {
multiresModifier_subdivide(mmd, NULL, ob, 1, 0);
}
mmd->lvl = mmd->totlvl;
orig = CDDM_from_mesh(me);
/* XXX We *must* alloc paint mask here, else we have some kind of mismatch in
* multires_modifier_update_mdisps() (called by dm->release(dm)), which always creates the
* reference subsurfed dm with this option, before calling multiresModifier_disp_run(),
* which implicitly expects both subsurfs from its first dm and oldGridData parameters to
* be of the same "format"! */
dm = multires_make_derived_from_derived(orig, mmd, NULL, ob, 0);
multires_load_old_dm(dm, me, mmd->totlvl + 1);
multires_dm_mark_as_modified(dm, MULTIRES_COORDS_MODIFIED);
dm->release(dm);
orig->release(orig);
/* Remove the old multires */
multires_free(me->mr);
me->mr = NULL;
}
/* If 'ob_src' and 'ob_dst' both have multires modifiers, synchronize them
* such that 'ob_dst' has the same total number of levels as 'ob_src'. */
void multiresModifier_sync_levels_ex(Scene *scene,
Object *ob_dst,
MultiresModifierData *mmd_src,
MultiresModifierData *mmd_dst)
{
if (mmd_src->totlvl == mmd_dst->totlvl) {
return;
}
if (mmd_src->totlvl > mmd_dst->totlvl) {
multires_subdivide(mmd_dst, scene, ob_dst, mmd_src->totlvl, false, mmd_dst->simple);
}
else {
multires_del_higher(mmd_dst, ob_dst, mmd_src->totlvl);
}
}
static void multires_sync_levels(Scene *scene, Object *ob_src, Object *ob_dst)
{
MultiresModifierData *mmd_src = get_multires_modifier(scene, ob_src, true);
MultiresModifierData *mmd_dst = get_multires_modifier(scene, ob_dst, true);
if (!mmd_src) {
/* object could have MDISP even when there is no multires modifier
* this could lead to troubles due to i've got no idea how mdisp could be
* up-sampled correct without modifier data.
* just remove mdisps if no multires present (nazgul) */
multires_customdata_delete(ob_src->data);
}
if (mmd_src && mmd_dst) {
multiresModifier_sync_levels_ex(scene, ob_dst, mmd_src, mmd_dst);
}
}
static void multires_apply_uniform_scale(Object *object, const float scale)
{
Mesh *mesh = (Mesh *)object->data;
MDisps *mdisps = CustomData_get_layer(&mesh->ldata, CD_MDISPS);
for (int i = 0; i < mesh->totloop; i++) {
MDisps *grid = &mdisps[i];
for (int j = 0; j < grid->totdisp; j++) {
mul_v3_fl(grid->disps[j], scale);
}
}
}
static void multires_apply_smat(struct Depsgraph *UNUSED(depsgraph),
Scene *scene,
Object *object,
const float smat[3][3])
{
const MultiresModifierData *mmd = get_multires_modifier(scene, object, true);
if (mmd == NULL || mmd->totlvl == 0) {
return;
}
/* Make sure layer present. */
Mesh *mesh = (Mesh *)object->data;
CustomData_external_read(&mesh->ldata, &mesh->id, CD_MASK_MDISPS, mesh->totloop);
if (!CustomData_get_layer(&mesh->ldata, CD_MDISPS)) {
return;
}
if (is_uniform_scaled_m3(smat)) {
const float scale = mat3_to_scale(smat);
multires_apply_uniform_scale(object, scale);
}
else {
/* TODO(sergey): This branch of code actually requires more work to
* preserve all the details.
*/
const float scale = mat3_to_scale(smat);
multires_apply_uniform_scale(object, scale);
}
}
int multires_mdisp_corners(MDisps *s)
{
int lvl = 13;
while (lvl > 0) {
int side = (1 << (lvl - 1)) + 1;
if ((s->totdisp % (side * side)) == 0) {
return s->totdisp / (side * side);
}
lvl--;
}
return 0;
}
void multiresModifier_scale_disp(struct Depsgraph *depsgraph, Scene *scene, Object *ob)
{
float smat[3][3];
/* object's scale matrix */
BKE_object_scale_to_mat3(ob, smat);
multires_apply_smat(depsgraph, scene, ob, smat);
}
void multiresModifier_prepare_join(struct Depsgraph *depsgraph,
Scene *scene,
Object *ob,
Object *to_ob)
{
float smat[3][3], tmat[3][3], mat[3][3];
multires_sync_levels(scene, to_ob, ob);
/* construct scale matrix for displacement */
BKE_object_scale_to_mat3(to_ob, tmat);
invert_m3(tmat);
BKE_object_scale_to_mat3(ob, smat);
mul_m3_m3m3(mat, smat, tmat);
multires_apply_smat(depsgraph, scene, ob, mat);
}
/* update multires data after topology changing */
void multires_topology_changed(Mesh *me)
{
MDisps *mdisp = NULL, *cur = NULL;
int i, grid = 0;
CustomData_external_read(&me->ldata, &me->id, CD_MASK_MDISPS, me->totloop);
mdisp = CustomData_get_layer(&me->ldata, CD_MDISPS);
if (!mdisp) {
return;
}
cur = mdisp;
for (i = 0; i < me->totloop; i++, cur++) {
if (cur->totdisp) {
grid = mdisp->totdisp;
break;
}
}
for (i = 0; i < me->totloop; i++, mdisp++) {
/* allocate memory for mdisp, the whole disp layer would be erased otherwise */
if (!mdisp->totdisp || !mdisp->disps) {
if (grid) {
mdisp->totdisp = grid;
mdisp->disps = MEM_calloc_arrayN(3 * sizeof(float), mdisp->totdisp, "mdisp topology");
}
continue;
}
}
}
/***************** Multires interpolation stuff *****************/
/* Find per-corner coordinate with given per-face UV coord */
int mdisp_rot_face_to_crn(struct MVert *UNUSED(mvert),
struct MPoly *mpoly,
struct MLoop *UNUSED(mloop),
const struct MLoopTri *UNUSED(lt),
const int face_side,
const float u,
const float v,
float *x,
float *y)
{
const float offset = face_side * 0.5f - 0.5f;
int S = 0;
if (mpoly->totloop == 4) {
if (u <= offset && v <= offset) {
S = 0;
}
else if (u > offset && v <= offset) {
S = 1;
}
else if (u > offset && v > offset) {
S = 2;
}
else if (u <= offset && v >= offset) {
S = 3;
}
if (S == 0) {
*y = offset - u;
*x = offset - v;
}
else if (S == 1) {
*x = u - offset;
*y = offset - v;
}
else if (S == 2) {
*y = u - offset;
*x = v - offset;
}
else if (S == 3) {
*x = offset - u;
*y = v - offset;
}
}
else if (mpoly->totloop == 3) {
int grid_size = offset;
float w = (face_side - 1) - u - v;
float W1, W2;
if (u >= v && u >= w) {
S = 0;
W1 = w;
W2 = v;
}
else if (v >= u && v >= w) {
S = 1;
W1 = u;
W2 = w;
}
else {
S = 2;
W1 = v;
W2 = u;
}
W1 /= (face_side - 1);
W2 /= (face_side - 1);
*x = (1 - (2 * W1) / (1 - W2)) * grid_size;
*y = (1 - (2 * W2) / (1 - W1)) * grid_size;
}
else {
/* the complicated ngon case: find the actual coordinate from
* the barycentric coordinates and finally find the closest vertex
* should work reliably for convex cases only but better than nothing */
#if 0
int minS, i;
float mindist = FLT_MAX;
for (i = 0; i < mpoly->totloop; i++) {
float len = len_v3v3(NULL, mvert[mloop[mpoly->loopstart + i].v].co);
if (len < mindist) {
mindist = len;
minS = i;
}
}
S = minS;
#endif
/* temp not implemented yet and also not working properly in current master.
* (was worked around by subdividing once) */
S = 0;
*x = 0;
*y = 0;
}
return S;
}
Reference in New Issue View Git Blame Copy Permalink