forked from bartvdbraak/blender
Fix T52649: missing custom (split) normals from FBX exporter.
Own mistake in recent rB25c5928b2b6 (this DOES NOT affect 2.79 release).
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4a744727be
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6859695055
@ -2072,6 +2072,11 @@ void BKE_mesh_calc_normals_split_ex(Mesh *mesh, MLoopNorSpaceArray *r_lnors_spac
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short (*clnors)[2] = NULL;
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bool free_polynors = false;
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/* Note that we enforce computing clnors when the clnor space array is requested by caller here.
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* However, we obviously only use the autosmooth angle threshold only in case autosmooth is enabled. */
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const bool use_split_normals = (r_lnors_spacearr != NULL) || ((mesh->flag & ME_AUTOSMOOTH) != 0);
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const float split_angle = (mesh->flag & ME_AUTOSMOOTH) != 0 ? mesh->smoothresh : (float)M_PI;
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if (CustomData_has_layer(&mesh->ldata, CD_NORMAL)) {
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r_loopnors = CustomData_get_layer(&mesh->ldata, CD_NORMAL);
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memset(r_loopnors, 0, sizeof(float[3]) * mesh->totloop);
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@ -2100,10 +2105,7 @@ void BKE_mesh_calc_normals_split_ex(Mesh *mesh, MLoopNorSpaceArray *r_lnors_spac
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BKE_mesh_normals_loop_split(
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mesh->mvert, mesh->totvert, mesh->medge, mesh->totedge,
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mesh->mloop, r_loopnors, mesh->totloop, mesh->mpoly, (const float (*)[3])polynors, mesh->totpoly,
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/* Note that we enforce computing clnors when the clnor space array is requested by caller here.
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* However, we obviously only use the autosmooth angle threshold only in case autosmooth is enabled. */
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r_lnors_spacearr != NULL, (mesh->flag & ME_AUTOSMOOTH) != 0 ? mesh->smoothresh : (float)M_PI,
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r_lnors_spacearr, clnors, NULL);
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use_split_normals, split_angle, r_lnors_spacearr, clnors, NULL);
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if (free_polynors) {
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MEM_freeN(polynors);
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