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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_subsurf.c
* \ingroup modifiers
*/
#include <stddef.h>
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#ifdef WITH_OPENSUBDIV
# include "DNA_userdef_types.h"
#endif
#include "BLI_utildefines.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_scene.h"
#include "BKE_subsurf.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
#include "MOD_modifiertypes.h"
#include "intern/CCGSubSurf.h"
static void initData(ModifierData *md)
{
SubsurfModifierData *smd = (SubsurfModifierData *) md;
smd->levels = 1;
smd->renderLevels = 2;
smd->flags |= eSubsurfModifierFlag_SubsurfUv;
}
static void copyData(const ModifierData *md, ModifierData *target, const int flag)
{
#if 0
const SubsurfModifierData *smd = (const SubsurfModifierData *) md;
#endif
SubsurfModifierData *tsmd = (SubsurfModifierData *) target;
modifier_copyData_generic(md, target, flag);
tsmd->emCache = tsmd->mCache = NULL;
}
static void freeData(ModifierData *md)
{
SubsurfModifierData *smd = (SubsurfModifierData *) md;
if (smd->mCache) {
ccgSubSurf_free(smd->mCache);
smd->mCache = NULL;
}
if (smd->emCache) {
ccgSubSurf_free(smd->emCache);
smd->emCache = NULL;
}
}
static bool isDisabled(const Scene *scene, ModifierData *md, bool useRenderParams)
{
SubsurfModifierData *smd = (SubsurfModifierData *) md;
int levels = (useRenderParams) ? smd->renderLevels : smd->levels;
return get_render_subsurf_level(&scene->r, levels, useRenderParams != 0) == 0;
}
static DerivedMesh *applyModifier(
ModifierData *md, const ModifierEvalContext *ctx,
DerivedMesh *derivedData)
{
SubsurfModifierData *smd = (SubsurfModifierData *) md;
struct Scene *scene = DEG_get_evaluated_scene(ctx->depsgraph);
SubsurfFlags subsurf_flags = 0;
DerivedMesh *result;
const bool useRenderParams = (ctx->flag & MOD_APPLY_RENDER) != 0;
const bool isFinalCalc = (ctx->flag & MOD_APPLY_USECACHE) != 0;
#ifdef WITH_OPENSUBDIV
const bool allow_gpu = (ctx->flag & MOD_APPLY_ALLOW_GPU) != 0;
#endif
bool do_cddm_convert = useRenderParams || !isFinalCalc;
if (useRenderParams)
subsurf_flags |= SUBSURF_USE_RENDER_PARAMS;
if (isFinalCalc)
subsurf_flags |= SUBSURF_IS_FINAL_CALC;
if (ctx->object->mode & OB_MODE_EDIT)
subsurf_flags |= SUBSURF_IN_EDIT_MODE;
#ifdef WITH_OPENSUBDIV
/* TODO(sergey): Not entirely correct, modifiers on top of subsurf
* could be disabled.
*/
if (md->next == NULL &&
allow_gpu &&
do_cddm_convert == false &&
smd->use_opensubdiv)
{
if (U.opensubdiv_compute_type == USER_OPENSUBDIV_COMPUTE_NONE) {
modifier_setError(md, "OpenSubdiv is disabled in User Preferences");
}
else if ((ctx->object->mode & (OB_MODE_VERTEX_PAINT | OB_MODE_WEIGHT_PAINT | OB_MODE_TEXTURE_PAINT)) != 0) {
modifier_setError(md, "OpenSubdiv is not supported in paint modes");
}
else if ((DEG_get_eval_flags_for_id(ctx->depsgraph, &ctx->object->id) & DAG_EVAL_NEED_CPU) == 0) {
subsurf_flags |= SUBSURF_USE_GPU_BACKEND;
do_cddm_convert = false;
}
else {
modifier_setError(md, "OpenSubdiv is disabled due to dependencies");
}
}
#endif
result = subsurf_make_derived_from_derived(derivedData, smd, scene, NULL, subsurf_flags);
result->cd_flag = derivedData->cd_flag;
{
DerivedMesh *cddm = CDDM_copy(result);
result->release(result);
result = cddm;
}
#ifndef WITH_OPESUBDIV
(void) do_cddm_convert;
#endif
return result;
}
static DerivedMesh *applyModifierEM(
ModifierData *md, const ModifierEvalContext *ctx,
struct BMEditMesh *UNUSED(editData),
DerivedMesh *derivedData)
{
SubsurfModifierData *smd = (SubsurfModifierData *) md;
struct Scene *scene = DEG_get_evaluated_scene(ctx->depsgraph);
DerivedMesh *result;
/* 'orco' using editmode flags would cause cache to be used twice in editbmesh_calc_modifiers */
SubsurfFlags ss_flags = (ctx->flag & MOD_APPLY_ORCO) ? 0 : (SUBSURF_FOR_EDIT_MODE | SUBSURF_IN_EDIT_MODE);
#ifdef WITH_OPENSUBDIV
const bool allow_gpu = (ctx->flag & MOD_APPLY_ALLOW_GPU) != 0;
if (md->next == NULL && allow_gpu && smd->use_opensubdiv) {
modifier_setError(md, "OpenSubdiv is not supported in edit mode");
}
#endif
result = subsurf_make_derived_from_derived(derivedData, smd, scene, NULL, ss_flags);
return result;
}
static bool dependsOnNormals(ModifierData *md)
{
#ifdef WITH_OPENSUBDIV
SubsurfModifierData *smd = (SubsurfModifierData *) md;
if (smd->use_opensubdiv && md->next == NULL) {
return true;
}
#else
UNUSED_VARS(md);
#endif
return false;
}
ModifierTypeInfo modifierType_Subsurf = {
/* name */ "Subsurf",
/* structName */ "SubsurfModifierData",
/* structSize */ sizeof(SubsurfModifierData),
/* type */ eModifierTypeType_Constructive,
/* flags */ eModifierTypeFlag_AcceptsMesh |
eModifierTypeFlag_SupportsMapping |
eModifierTypeFlag_SupportsEditmode |
eModifierTypeFlag_EnableInEditmode |
eModifierTypeFlag_AcceptsCVs,
/* copyData */ copyData,
/* deformVerts_DM */ NULL,
/* deformMatrices_DM */ NULL,
/* deformVertsEM_DM */ NULL,
/* deformMatricesEM_DM*/NULL,
/* applyModifier_DM */ applyModifier,
/* applyModifierEM_DM */applyModifierEM,
/* deformVerts */ NULL,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
/* applyModifier */ NULL,
/* applyModifierEM */ NULL,
/* initData */ initData,
/* requiredDataMask */ NULL,
/* freeData */ freeData,
/* isDisabled */ isDisabled,
/* updateDepsgraph */ NULL,
/* dependsOnTime */ NULL,
/* dependsOnNormals */ dependsOnNormals,
/* foreachObjectLink */ NULL,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
};
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