diff options
Diffstat (limited to 'source/blender/blenkernel/intern/particle_distribute.c')
| -rw-r--r-- | source/blender/blenkernel/intern/particle_distribute.c | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/source/blender/blenkernel/intern/particle_distribute.c b/source/blender/blenkernel/intern/particle_distribute.c index 44cf5b119c1..ac9c60e8999 100644 --- a/source/blender/blenkernel/intern/particle_distribute.c +++ b/source/blender/blenkernel/intern/particle_distribute.c @@ -427,12 +427,37 @@ static int distribute_binary_search(float *sum, int n, float value) static void distribute_from_verts_exec(ParticleTask *thread, ParticleData *pa, int p) { ParticleThreadContext *ctx= thread->ctx; - int rng_skip_tot= PSYS_RND_DIST_SKIP; /* count how many rng_* calls wont need skipping */ + MFace *mface; + + mface = ctx->dm->getTessFaceDataArray(ctx->dm, CD_MFACE); + + int rng_skip_tot = PSYS_RND_DIST_SKIP; /* count how many rng_* calls wont need skipping */ /* TODO_PARTICLE - use original index */ - pa->num= ctx->index[p]; - pa->fuv[0] = 1.0f; - pa->fuv[1] = pa->fuv[2] = pa->fuv[3] = 0.0; + pa->num = ctx->index[p]; + + zero_v4(pa->fuv); + + if (pa->num != DMCACHE_NOTFOUND && pa->num < ctx->dm->getNumVerts(ctx->dm)) { + + /* This finds the first face to contain the emitting vertex, + * this is not ideal, but is mostly fine as UV seams generally + * map to equal-colored parts of a texture */ + for (int i = 0; i < ctx->dm->getNumTessFaces(ctx->dm); i++, mface++) { + if (ELEM(pa->num, mface->v1, mface->v2, mface->v3, mface->v4)) { + unsigned int *vert = &mface->v1; + + for (int j = 0; j < 4; j++, vert++) { + if (*vert == pa->num) { + pa->fuv[j] = 1.0f; + break; + } + } + + break; + } + } + } #if ONLY_WORKING_WITH_PA_VERTS if (ctx->tree) { @@ -873,10 +898,7 @@ static int psys_thread_context_init_distribute(ParticleThreadContext *ctx, Parti else dm= CDDM_from_mesh((Mesh*)ob->data); - /* BMESH ONLY, for verts we don't care about tessfaces */ - if (from != PART_FROM_VERT) { - DM_ensure_tessface(dm); - } + DM_ensure_tessface(dm); /* we need orco for consistent distributions */ if (!CustomData_has_layer(&dm->vertData, CD_ORCO)) @@ -1092,7 +1114,7 @@ static int psys_thread_context_init_distribute(ParticleThreadContext *ctx, Parti /* For hair, sort by origindex (allows optimization's in rendering), */ /* however with virtual parents the children need to be in random order. */ - if (part->type == PART_HAIR && !(part->childtype==PART_CHILD_FACES && part->parents!=0.0f)) { + if (part->type == PART_HAIR && !(part->childtype==PART_CHILD_FACES && part->parents != 0.0f)) { int *orig_index = NULL; if (from == PART_FROM_VERT) { |