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Cleanup: Move (edit)mesh_tangent.c to C++ 

This changes the two tangent-related files in BKE to C++ in preparation for the C++ Mikktspace port in D15589.
For now, they still use the original Mikktspace.

Differential Revision: https://developer.blender.org/D15636
This commit is contained in:
Lukas Stockner 2022-09-03 16:35:24 +02:00 committed by Lukas Stockner
parent 043f59cb3b
commit 6b6428fcbc
3 changed files with 82 additions and 77 deletions
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4
source/blender/blenkernel/CMakeLists.txt
View File

@ -128,7 +128,7 @@ set(SRC
intern/editmesh.c
intern/editmesh_bvh.c
intern/editmesh_cache.cc
intern/editmesh_tangent.c
intern/editmesh_tangent.cc
intern/effect.c
intern/fcurve.c
intern/fcurve_cache.c
@ -211,7 +211,7 @@ set(SRC
intern/mesh_remesh_voxel.cc
intern/mesh_runtime.cc
intern/mesh_sample.cc
intern/mesh_tangent.c
intern/mesh_tangent.cc
intern/mesh_tessellate.cc
intern/mesh_validate.cc
intern/mesh_wrapper.cc

41
source/blender/blenkernel/intern/editmesh_tangent.c → source/blender/blenkernel/intern/editmesh_tangent.cc
View File

@ -29,7 +29,7 @@
/* Necessary complexity to handle looptri's as quads for correct tangents */
#define USE_LOOPTRI_DETECT_QUADS
typedef struct {
struct SGLSLEditMeshToTangent {
const float (*precomputedFaceNormals)[3];
const float (*precomputedLoopNormals)[3];
const BMLoop *(*looptris)[3];
@ -44,8 +44,7 @@ typedef struct {
const int *face_as_quad_map;
int num_face_as_quad_map;
#endif
} SGLSLEditMeshToTangent;
};
#ifdef USE_LOOPTRI_DETECT_QUADS
/* seems weak but only used on quads */
@ -61,7 +60,7 @@ static const BMLoop *bm_loop_at_face_index(const BMFace *f, int vert_index)
static int emdm_ts_GetNumFaces(const SMikkTSpaceContext *pContext)
{
SGLSLEditMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLEditMeshToTangent *pMesh = static_cast<SGLSLEditMeshToTangent *>(pContext->m_pUserData);
#ifdef USE_LOOPTRI_DETECT_QUADS
return pMesh->num_face_as_quad_map;
@ -73,7 +72,7 @@ static int emdm_ts_GetNumFaces(const SMikkTSpaceContext *pContext)
static int emdm_ts_GetNumVertsOfFace(const SMikkTSpaceContext *pContext, const int face_num)
{
#ifdef USE_LOOPTRI_DETECT_QUADS
SGLSLEditMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLEditMeshToTangent *pMesh = static_cast<SGLSLEditMeshToTangent *>(pContext->m_pUserData);
if (pMesh->face_as_quad_map) {
const BMLoop **lt = pMesh->looptris[pMesh->face_as_quad_map[face_num]];
if (lt[0]->f->len == 4) {
@ -93,7 +92,7 @@ static void emdm_ts_GetPosition(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// BLI_assert(vert_index >= 0 && vert_index < 4);
SGLSLEditMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLEditMeshToTangent *pMesh = static_cast<SGLSLEditMeshToTangent *>(pContext->m_pUserData);
const BMLoop **lt;
const BMLoop *l;
@ -127,7 +126,7 @@ static void emdm_ts_GetTextureCoordinate(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// BLI_assert(vert_index >= 0 && vert_index < 4);
SGLSLEditMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLEditMeshToTangent *pMesh = static_cast<SGLSLEditMeshToTangent *>(pContext->m_pUserData);
const BMLoop **lt;
const BMLoop *l;
@ -150,7 +149,7 @@ static void emdm_ts_GetTextureCoordinate(const SMikkTSpaceContext *pContext,
finally:
if (pMesh->cd_loop_uv_offset != -1) {
const float *uv = BM_ELEM_CD_GET_VOID_P(l, pMesh->cd_loop_uv_offset);
const float *uv = BM_ELEM_CD_GET_FLOAT_P(l, pMesh->cd_loop_uv_offset);
copy_v2_v2(r_uv, uv);
}
else {
@ -165,7 +164,7 @@ static void emdm_ts_GetNormal(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// BLI_assert(vert_index >= 0 && vert_index < 4);
SGLSLEditMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLEditMeshToTangent *pMesh = static_cast<SGLSLEditMeshToTangent *>(pContext->m_pUserData);
const BMLoop **lt;
const BMLoop *l;
@ -210,7 +209,7 @@ static void emdm_ts_SetTSpace(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// BLI_assert(vert_index >= 0 && vert_index < 4);
SGLSLEditMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLEditMeshToTangent *pMesh = static_cast<SGLSLEditMeshToTangent *>(pContext->m_pUserData);
const BMLoop **lt;
const BMLoop *l;
@ -241,11 +240,11 @@ finally:
static void emDM_calc_loop_tangents_thread(TaskPool *__restrict UNUSED(pool), void *taskdata)
{
struct SGLSLEditMeshToTangent *mesh2tangent = taskdata;
SGLSLEditMeshToTangent *mesh2tangent = static_cast<SGLSLEditMeshToTangent *>(taskdata);
/* new computation method */
{
SMikkTSpaceContext sContext = {NULL};
SMikkTSpaceInterface sInterface = {NULL};
SMikkTSpaceContext sContext{};
SMikkTSpaceInterface sInterface{};
sContext.m_pUserData = mesh2tangent;
sContext.m_pInterface = &sInterface;
sInterface.m_getNumFaces = emdm_ts_GetNumFaces;
@ -254,6 +253,7 @@ static void emDM_calc_loop_tangents_thread(TaskPool *__restrict UNUSED(pool), vo
sInterface.m_getTexCoord = emdm_ts_GetTextureCoordinate;
sInterface.m_getNormal = emdm_ts_GetNormal;
sInterface.m_setTSpaceBasic = emdm_ts_SetTSpace;
sInterface.m_setTSpace = nullptr;
/* 0 if failed */
genTangSpaceDefault(&sContext);
}
@ -304,7 +304,7 @@ void BKE_editmesh_loop_tangent_calc(BMEditMesh *em,
if ((tangent_mask & DM_TANGENT_MASK_ORCO) &&
CustomData_get_named_layer_index(loopdata_out, CD_TANGENT, "") == -1) {
CustomData_add_layer_named(
loopdata_out, CD_TANGENT, CD_SET_DEFAULT, NULL, (int)loopdata_out_len, "");
loopdata_out, CD_TANGENT, CD_SET_DEFAULT, nullptr, (int)loopdata_out_len, "");
}
if (calc_act && act_uv_name[0]) {
BKE_mesh_add_loop_tangent_named_layer_for_uv(
@ -317,14 +317,14 @@ void BKE_editmesh_loop_tangent_calc(BMEditMesh *em,
int totface = em->tottri;
#ifdef USE_LOOPTRI_DETECT_QUADS
int num_face_as_quad_map;
int *face_as_quad_map = NULL;
int *face_as_quad_map = nullptr;
/* map faces to quads */
if (em->tottri != bm->totface) {
/* Over allocate, since we don't know how many ngon or quads we have. */
/* map fake face index to looptri */
face_as_quad_map = MEM_mallocN(sizeof(int) * totface, __func__);
face_as_quad_map = static_cast<int *>(MEM_mallocN(sizeof(int) * totface, __func__));
int i, j;
for (i = 0, j = 0; j < totface; i++, j++) {
face_as_quad_map[i] = j;
@ -342,7 +342,7 @@ void BKE_editmesh_loop_tangent_calc(BMEditMesh *em,
/* Calculation */
if (em->tottri != 0) {
TaskPool *task_pool;
task_pool = BLI_task_pool_create(NULL, TASK_PRIORITY_HIGH);
task_pool = BLI_task_pool_create(nullptr, TASK_PRIORITY_HIGH);
tangent_mask_curr = 0;
/* Calculate tangent layers */
@ -392,10 +392,11 @@ void BKE_editmesh_loop_tangent_calc(BMEditMesh *em,
}
BM_mesh_elem_index_ensure(bm, htype_index);
mesh2tangent->looptris = (const BMLoop *(*)[3])em->looptris;
mesh2tangent->tangent = loopdata_out->layers[index].data;
mesh2tangent->looptris = (const BMLoop *(*)[3])(em->looptris);
mesh2tangent->tangent = static_cast<float(*)[4]>(loopdata_out->layers[index].data);
BLI_task_pool_push(task_pool, emDM_calc_loop_tangents_thread, mesh2tangent, false, NULL);
BLI_task_pool_push(
task_pool, emDM_calc_loop_tangents_thread, mesh2tangent, false, nullptr);
}
BLI_assert(tangent_mask_curr == tangent_mask);

114
source/blender/blenkernel/intern/mesh_tangent.c → source/blender/blenkernel/intern/mesh_tangent.cc
View File

@ -36,7 +36,7 @@
/* Tangent space utils. */
/* User data. */
typedef struct {
struct BKEMeshToTangent {
const MPoly *mpolys; /* faces */
const MLoop *mloops; /* faces's vertices */
const MVert *mverts; /* vertices */
@ -44,18 +44,18 @@ typedef struct {
const float (*lnors)[3]; /* loops' normals */
float (*tangents)[4]; /* output tangents */
int num_polys; /* number of polygons */
} BKEMeshToTangent;
};
/* Mikktspace's API */
static int get_num_faces(const SMikkTSpaceContext *pContext)
{
BKEMeshToTangent *p_mesh = (BKEMeshToTangent *)pContext->m_pUserData;
BKEMeshToTangent *p_mesh = static_cast<BKEMeshToTangent *>(pContext->m_pUserData);
return p_mesh->num_polys;
}
static int get_num_verts_of_face(const SMikkTSpaceContext *pContext, const int face_idx)
{
BKEMeshToTangent *p_mesh = (BKEMeshToTangent *)pContext->m_pUserData;
BKEMeshToTangent *p_mesh = static_cast<BKEMeshToTangent *>(pContext->m_pUserData);
return p_mesh->mpolys[face_idx].totloop;
}
@ -64,7 +64,7 @@ static void get_position(const SMikkTSpaceContext *pContext,
const int face_idx,
const int vert_idx)
{
BKEMeshToTangent *p_mesh = (BKEMeshToTangent *)pContext->m_pUserData;
BKEMeshToTangent *p_mesh = static_cast<BKEMeshToTangent *>(pContext->m_pUserData);
const int loop_idx = p_mesh->mpolys[face_idx].loopstart + vert_idx;
copy_v3_v3(r_co, p_mesh->mverts[p_mesh->mloops[loop_idx].v].co);
}
@ -74,7 +74,7 @@ static void get_texture_coordinate(const SMikkTSpaceContext *pContext,
const int face_idx,
const int vert_idx)
{
BKEMeshToTangent *p_mesh = (BKEMeshToTangent *)pContext->m_pUserData;
BKEMeshToTangent *p_mesh = static_cast<BKEMeshToTangent *>(pContext->m_pUserData);
copy_v2_v2(r_uv, p_mesh->luvs[p_mesh->mpolys[face_idx].loopstart + vert_idx].uv);
}
@ -83,7 +83,7 @@ static void get_normal(const SMikkTSpaceContext *pContext,
const int face_idx,
const int vert_idx)
{
BKEMeshToTangent *p_mesh = (BKEMeshToTangent *)pContext->m_pUserData;
BKEMeshToTangent *p_mesh = static_cast<BKEMeshToTangent *>(pContext->m_pUserData);
copy_v3_v3(r_no, p_mesh->lnors[p_mesh->mpolys[face_idx].loopstart + vert_idx]);
}
@ -93,7 +93,7 @@ static void set_tspace(const SMikkTSpaceContext *pContext,
const int face_idx,
const int vert_idx)
{
BKEMeshToTangent *p_mesh = (BKEMeshToTangent *)pContext->m_pUserData;
BKEMeshToTangent *p_mesh = static_cast<BKEMeshToTangent *>(pContext->m_pUserData);
float *p_res = p_mesh->tangents[p_mesh->mpolys[face_idx].loopstart + vert_idx];
copy_v3_v3(p_res, fv_tangent);
p_res[3] = face_sign;
@ -110,9 +110,9 @@ void BKE_mesh_calc_loop_tangent_single_ex(const MVert *mverts,
const int numPolys,
ReportList *reports)
{
BKEMeshToTangent mesh_to_tangent = {NULL};
SMikkTSpaceContext s_context = {NULL};
SMikkTSpaceInterface s_interface = {NULL};
BKEMeshToTangent mesh_to_tangent;
SMikkTSpaceContext s_context{};
SMikkTSpaceInterface s_interface{};
const MPoly *mp;
int mp_index;
@ -143,6 +143,7 @@ void BKE_mesh_calc_loop_tangent_single_ex(const MVert *mverts,
s_interface.m_getTexCoord = get_texture_coordinate;
s_interface.m_getNormal = get_normal;
s_interface.m_setTSpaceBasic = set_tspace;
s_interface.m_setTSpace = nullptr;
/* 0 if failed */
if (genTangSpaceDefault(&s_context) == false) {
@ -159,10 +160,10 @@ void BKE_mesh_calc_loop_tangent_single(Mesh *mesh,
/* Check we have valid texture coordinates first! */
if (uvmap) {
loopuvs = CustomData_get_layer_named(&mesh->ldata, CD_MLOOPUV, uvmap);
loopuvs = static_cast<MLoopUV *>(CustomData_get_layer_named(&mesh->ldata, CD_MLOOPUV, uvmap));
}
else {
loopuvs = CustomData_get_layer(&mesh->ldata, CD_MLOOPUV);
loopuvs = static_cast<MLoopUV *>(CustomData_get_layer(&mesh->ldata, CD_MLOOPUV));
}
if (!loopuvs) {
BKE_reportf(reports,
@ -172,7 +173,8 @@ void BKE_mesh_calc_loop_tangent_single(Mesh *mesh,
return;
}
const float(*loopnors)[3] = CustomData_get_layer(&mesh->ldata, CD_NORMAL);
const float(*loopnors)[3] = static_cast<const float(*)[3]>(
CustomData_get_layer(&mesh->ldata, CD_NORMAL));
if (!loopnors) {
BKE_report(
reports, RPT_ERROR, "Tangent space computation needs loop normals, none found, aborting");
@ -200,7 +202,7 @@ void BKE_mesh_calc_loop_tangent_single(Mesh *mesh,
/* Necessary complexity to handle looptri's as quads for correct tangents */
#define USE_LOOPTRI_DETECT_QUADS
typedef struct {
struct SGLSLMeshToTangent {
const float (*precomputedFaceNormals)[3];
const float (*precomputedLoopNormals)[3];
const MLoopTri *looptri;
@ -219,13 +221,12 @@ typedef struct {
const int *face_as_quad_map;
int num_face_as_quad_map;
#endif
} SGLSLMeshToTangent;
};
/* interface */
static int dm_ts_GetNumFaces(const SMikkTSpaceContext *pContext)
{
SGLSLMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLMeshToTangent *pMesh = static_cast<SGLSLMeshToTangent *>(pContext->m_pUserData);
#ifdef USE_LOOPTRI_DETECT_QUADS
return pMesh->num_face_as_quad_map;
@ -237,7 +238,7 @@ static int dm_ts_GetNumFaces(const SMikkTSpaceContext *pContext)
static int dm_ts_GetNumVertsOfFace(const SMikkTSpaceContext *pContext, const int face_num)
{
#ifdef USE_LOOPTRI_DETECT_QUADS
SGLSLMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLMeshToTangent *pMesh = static_cast<SGLSLMeshToTangent *>(pContext->m_pUserData);
if (pMesh->face_as_quad_map) {
const MLoopTri *lt = &pMesh->looptri[pMesh->face_as_quad_map[face_num]];
const MPoly *mp = &pMesh->mpoly[lt->poly];
@ -258,7 +259,7 @@ static void dm_ts_GetPosition(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// assert(vert_index >= 0 && vert_index < 4);
SGLSLMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLMeshToTangent *pMesh = static_cast<SGLSLMeshToTangent *>(pContext->m_pUserData);
const MLoopTri *lt;
uint loop_index;
const float *co;
@ -292,7 +293,7 @@ static void dm_ts_GetTextureCoordinate(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// assert(vert_index >= 0 && vert_index < 4);
SGLSLMeshToTangent *pMesh = pContext->m_pUserData;
SGLSLMeshToTangent *pMesh = static_cast<SGLSLMeshToTangent *>(pContext->m_pUserData);
const MLoopTri *lt;
uint loop_index;
@ -315,7 +316,7 @@ static void dm_ts_GetTextureCoordinate(const SMikkTSpaceContext *pContext,
loop_index = lt->tri[vert_index];
finally:
if (pMesh->mloopuv != NULL) {
if (pMesh->mloopuv != nullptr) {
const float *uv = pMesh->mloopuv[loop_index].uv;
copy_v2_v2(r_uv, uv);
}
@ -331,7 +332,7 @@ static void dm_ts_GetNormal(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// assert(vert_index >= 0 && vert_index < 4);
SGLSLMeshToTangent *pMesh = (SGLSLMeshToTangent *)pContext->m_pUserData;
SGLSLMeshToTangent *pMesh = static_cast<SGLSLMeshToTangent *>(pContext->m_pUserData);
const MLoopTri *lt;
uint loop_index;
@ -393,7 +394,7 @@ static void dm_ts_SetTSpace(const SMikkTSpaceContext *pContext,
const int vert_index)
{
// assert(vert_index >= 0 && vert_index < 4);
SGLSLMeshToTangent *pMesh = (SGLSLMeshToTangent *)pContext->m_pUserData;
SGLSLMeshToTangent *pMesh = static_cast<SGLSLMeshToTangent *>(pContext->m_pUserData);
const MLoopTri *lt;
uint loop_index;
@ -425,11 +426,11 @@ finally:
static void DM_calc_loop_tangents_thread(TaskPool *__restrict UNUSED(pool), void *taskdata)
{
struct SGLSLMeshToTangent *mesh2tangent = taskdata;
SGLSLMeshToTangent *mesh2tangent = static_cast<SGLSLMeshToTangent *>(taskdata);
/* new computation method */
{
SMikkTSpaceContext sContext = {NULL};
SMikkTSpaceInterface sInterface = {NULL};
SMikkTSpaceContext sContext{};
SMikkTSpaceInterface sInterface{};
sContext.m_pUserData = mesh2tangent;
sContext.m_pInterface = &sInterface;
@ -439,6 +440,7 @@ static void DM_calc_loop_tangents_thread(TaskPool *__restrict UNUSED(pool), void
sInterface.m_getTexCoord = dm_ts_GetTextureCoordinate;
sInterface.m_getNormal = dm_ts_GetNormal;
sInterface.m_setTSpaceBasic = dm_ts_SetTSpace;
sInterface.m_setTSpace = nullptr;
/* 0 if failed */
genTangSpaceDefault(&sContext);
@ -453,7 +455,7 @@ void BKE_mesh_add_loop_tangent_named_layer_for_uv(CustomData *uv_data,
if (CustomData_get_named_layer_index(tan_data, CD_TANGENT, layer_name) == -1 &&
CustomData_get_named_layer_index(uv_data, CD_MLOOPUV, layer_name) != -1) {
CustomData_add_layer_named(
tan_data, CD_TANGENT, CD_SET_DEFAULT, NULL, numLoopData, layer_name);
tan_data, CD_TANGENT, CD_SET_DEFAULT, nullptr, numLoopData, layer_name);
}
}
@ -582,7 +584,7 @@ void BKE_mesh_calc_loop_tangent_ex(const MVert *mvert,
if ((tangent_mask & DM_TANGENT_MASK_ORCO) &&
CustomData_get_named_layer_index(loopdata, CD_TANGENT, "") == -1) {
CustomData_add_layer_named(
loopdata_out, CD_TANGENT, CD_SET_DEFAULT, NULL, (int)loopdata_out_len, "");
loopdata_out, CD_TANGENT, CD_SET_DEFAULT, nullptr, (int)loopdata_out_len, "");
}
if (calc_act && act_uv_name[0]) {
BKE_mesh_add_loop_tangent_named_layer_for_uv(
@ -595,14 +597,14 @@ void BKE_mesh_calc_loop_tangent_ex(const MVert *mvert,
#ifdef USE_LOOPTRI_DETECT_QUADS
int num_face_as_quad_map;
int *face_as_quad_map = NULL;
int *face_as_quad_map = nullptr;
/* map faces to quads */
if (looptri_len != mpoly_len) {
/* Over allocate, since we don't know how many ngon or quads we have. */
/* map fake face index to looptri */
face_as_quad_map = MEM_mallocN(sizeof(int) * looptri_len, __func__);
face_as_quad_map = static_cast<int *>(MEM_mallocN(sizeof(int) * looptri_len, __func__));
int k, j;
for (k = 0, j = 0; j < (int)looptri_len; k++, j++) {
face_as_quad_map[k] = j;
@ -620,7 +622,7 @@ void BKE_mesh_calc_loop_tangent_ex(const MVert *mvert,
/* Calculation */
if (looptri_len != 0) {
TaskPool *task_pool = BLI_task_pool_create(NULL, TASK_PRIORITY_HIGH);
TaskPool *task_pool = BLI_task_pool_create(nullptr, TASK_PRIORITY_HIGH);
tangent_mask_curr = 0;
/* Calculate tangent layers */
@ -645,9 +647,9 @@ void BKE_mesh_calc_loop_tangent_ex(const MVert *mvert,
mesh2tangent->precomputedLoopNormals = loop_normals;
mesh2tangent->precomputedFaceNormals = poly_normals;
mesh2tangent->orco = NULL;
mesh2tangent->mloopuv = CustomData_get_layer_named(
loopdata, CD_MLOOPUV, loopdata_out->layers[index].name);
mesh2tangent->orco = nullptr;
mesh2tangent->mloopuv = static_cast<const MLoopUV *>(
CustomData_get_layer_named(loopdata, CD_MLOOPUV, loopdata_out->layers[index].name));
/* Fill the resulting tangent_mask */
if (!mesh2tangent->mloopuv) {
@ -667,8 +669,8 @@ void BKE_mesh_calc_loop_tangent_ex(const MVert *mvert,
tangent_mask_curr |= (short)(1 << (uv_ind - uv_start));
}
mesh2tangent->tangent = loopdata_out->layers[index].data;
BLI_task_pool_push(task_pool, DM_calc_loop_tangents_thread, mesh2tangent, false, NULL);
mesh2tangent->tangent = static_cast<float(*)[4]>(loopdata_out->layers[index].data);
BLI_task_pool_push(task_pool, DM_calc_loop_tangents_thread, mesh2tangent, false, nullptr);
}
BLI_assert(tangent_mask_curr == tangent_mask);
@ -719,24 +721,26 @@ void BKE_mesh_calc_loop_tangents(Mesh *me_eval,
/* TODO(@campbellbarton): store in Mesh.runtime to avoid recalculation. */
short tangent_mask = 0;
BKE_mesh_calc_loop_tangent_ex(BKE_mesh_vertices(me_eval),
BKE_mesh_polygons(me_eval),
(uint)me_eval->totpoly,
BKE_mesh_loops(me_eval),
me_eval->runtime.looptris.array,
(uint)me_eval->runtime.looptris.len,
&me_eval->ldata,
calc_active_tangent,
tangent_names,
tangent_names_len,
BKE_mesh_vertex_normals_ensure(me_eval),
BKE_mesh_poly_normals_ensure(me_eval),
CustomData_get_layer(&me_eval->ldata, CD_NORMAL),
CustomData_get_layer(&me_eval->vdata, CD_ORCO), /* may be NULL */
/* result */
&me_eval->ldata,
(uint)me_eval->totloop,
&tangent_mask);
BKE_mesh_calc_loop_tangent_ex(
BKE_mesh_vertices(me_eval),
BKE_mesh_polygons(me_eval),
(uint)me_eval->totpoly,
BKE_mesh_loops(me_eval),
me_eval->runtime.looptris.array,
(uint)me_eval->runtime.looptris.len,
&me_eval->ldata,
calc_active_tangent,
tangent_names,
tangent_names_len,
BKE_mesh_vertex_normals_ensure(me_eval),
BKE_mesh_poly_normals_ensure(me_eval),
static_cast<const float(*)[3]>(CustomData_get_layer(&me_eval->ldata, CD_NORMAL)),
/* may be nullptr */
static_cast<const float(*)[3]>(CustomData_get_layer(&me_eval->vdata, CD_ORCO)),
/* result */
&me_eval->ldata,
(uint)me_eval->totloop,
&tangent_mask);
}
/** \} */