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Fix T50227: Alembic uv export/load issue 

Previously only a CD_MLOOPUV custom data layer was created. Now we also
create the accompanying CD_MTEXPOLY layer too.
This commit is contained in:
Sybren A. Stüvel 2017-04-12 16:33:40 +02:00
parent 6b815ae55d
commit 699a3e2498
Notes: blender-bot 2023-02-14 07:21:08 +01:00 
Referenced by issue #50227, Alembic uv export/load issue
1 changed files with 23 additions and 11 deletions
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34
source/blender/alembic/intern/abc_mesh.cc
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@ -897,19 +897,31 @@ static void *add_customdata_cb(void *user_data, const char *name, int data_type)
{
DerivedMesh *dm = static_cast<DerivedMesh *>(user_data);
CustomDataType cd_data_type = static_cast<CustomDataType>(data_type);
void *cd_ptr = NULL;
void *cd_ptr;
CustomData *loopdata;
int numloops;
if (ELEM(cd_data_type, CD_MLOOPUV, CD_MLOOPCOL)) {
cd_ptr = CustomData_get_layer_named(dm->getLoopDataLayout(dm), cd_data_type, name);
/* unsupported custom data type -- don't do anything. */
if (!ELEM(cd_data_type, CD_MLOOPUV, CD_MLOOPCOL)) {
return NULL;
}
if (cd_ptr == NULL) {
cd_ptr = CustomData_add_layer_named(dm->getLoopDataLayout(dm),
cd_data_type,
CD_DEFAULT,
NULL,
dm->getNumLoops(dm),
name);
}
loopdata = dm->getLoopDataLayout(dm);
cd_ptr = CustomData_get_layer_named(loopdata, cd_data_type, name);
if (cd_ptr != NULL) {
/* layer already exists, so just return it. */
return cd_ptr;
}
/* create a new layer, taking care to construct the hopefully-soon-to-be-removed
* CD_MTEXPOLY layer too, with the same name. */
numloops = dm->getNumLoops(dm);
cd_ptr = CustomData_add_layer_named(loopdata, cd_data_type, CD_DEFAULT,
NULL, numloops, name);
if (cd_data_type == CD_MLOOPUV) {
CustomData_add_layer_named(dm->getPolyDataLayout(dm),
CD_MTEXPOLY, CD_DEFAULT,
NULL, numloops, name);
}
return cd_ptr;