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gobj: fix assert when enabling hw anim if blend has 5+ transforms

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Instead, we reduce the TransformBlend down to the 4 most-weighted joints.
This commit is contained in:
rdb 2018-10-15 22:07:32 +02:00
parent 6e370ebbdd
commit 0131d1013b
1 changed files with 18 additions and 5 deletions
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23
panda/src/gobj/geomVertexData.cxx
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@ -621,13 +621,26 @@ copy_from(const GeomVertexData *source, bool keep_data_objects,
const TransformBlend &blend = blend_table->get_blend(from.get_data1i());
LVecBase4 weights = LVecBase4::zero();
LVecBase4i indices(0, 0, 0, 0);
nassertv(blend.get_num_transforms() <= 4);
for (size_t i = 0; i < blend.get_num_transforms(); i++) {
weights[i] = blend.get_weight(i);
indices[i] = add_transform(transform_table, blend.get_transform(i),
already_added);
if (blend.get_num_transforms() <= 4) {
for (size_t i = 0; i < blend.get_num_transforms(); i++) {
weights[i] = blend.get_weight(i);
indices[i] = add_transform(transform_table, blend.get_transform(i),
already_added);
}
} else {
// Limit the number of blends to the four with highest weights.
TransformBlend blend2(blend);
blend2.limit_transforms(4);
blend2.normalize_weights();
for (size_t i = 0; i < 4; i++) {
weights[i] = blend2.get_weight(i);
indices[i] = add_transform(transform_table, blend2.get_transform(i),
already_added);
}
}
if (weight.has_column()) {
weight.set_data4(weights);
}