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assimp: Fix assert loading meshes with multiple primitive types

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This commit is contained in:
rdb 2022-11-19 13:12:14 +01:00
parent 7505112f1d
commit d893b21f2b
2 changed files with 40 additions and 16 deletions
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46
pandatool/src/assimp/assimpLoader.cxx
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@ -215,8 +215,7 @@ build_graph() {
}
// And then the meshes.
_geoms = new PT(Geom)[_scene->mNumMeshes];
_geom_matindices = new unsigned int[_scene->mNumMeshes];
_geoms = new Geoms[_scene->mNumMeshes];
for (size_t i = 0; i < _scene->mNumMeshes; ++i) {
load_mesh(i);
}
@ -234,7 +233,6 @@ build_graph() {
delete[] _textures;
delete[] _mat_states;
delete[] _geoms;
delete[] _geom_matindices;
}
/**
@ -1019,20 +1017,22 @@ load_mesh(size_t index) {
}
// Create a geom and add the primitives to it.
PT(Geom) geom = new Geom(vdata);
Geoms &geoms = _geoms[index];
geoms._mat_index = mesh.mMaterialIndex;
if (points->get_num_primitives() > 0) {
geom->add_primitive(points);
geoms._points = new Geom(vdata);
geoms._points->add_primitive(points);
}
if (lines->get_num_primitives() > 0) {
geom->add_primitive(lines);
geoms._lines = new Geom(vdata);
geoms._lines->add_primitive(lines);
}
if (triangles->get_num_primitives() > 0) {
geom->add_primitive(triangles);
geoms._triangles = new Geom(vdata);
geoms._triangles->add_primitive(triangles);
}
_geoms[index] = geom;
_geom_matindices[index] = mesh.mMaterialIndex;
if (character) {
_charmap[mesh.mName.C_Str()] = character;
}
@ -1138,13 +1138,31 @@ load_node(const aiNode &node, PandaNode *parent) {
// If there's only mesh, don't bother using a per-geom state.
if (node.mNumMeshes == 1) {
meshIndex = node.mMeshes[0];
gnode->add_geom(_geoms[meshIndex]);
gnode->set_state(_mat_states[_geom_matindices[meshIndex]]);
const Geoms &geoms = _geoms[meshIndex];
if (geoms._points != nullptr) {
gnode->add_geom(geoms._points);
}
if (geoms._lines != nullptr) {
gnode->add_geom(geoms._lines);
}
if (geoms._triangles != nullptr) {
gnode->add_geom(geoms._triangles);
}
gnode->set_state(_mat_states[geoms._mat_index]);
} else {
for (size_t i = 0; i < node.mNumMeshes; ++i) {
meshIndex = node.mMeshes[i];
gnode->add_geom(_geoms[node.mMeshes[i]],
_mat_states[_geom_matindices[meshIndex]]);
const Geoms &geoms = _geoms[meshIndex];
const RenderState *state = _mat_states[geoms._mat_index];
if (geoms._points != nullptr) {
gnode->add_geom(geoms._points, state);
}
if (geoms._lines != nullptr) {
gnode->add_geom(geoms._lines, state);
}
if (geoms._triangles != nullptr) {
gnode->add_geom(geoms._triangles, state);
}
}
}

10
pandatool/src/assimp/assimpLoader.h
View File

@ -62,11 +62,17 @@ private:
Assimp::Importer _importer;
const aiScene *_scene;
struct Geoms {
PT(Geom) _points;
PT(Geom) _lines;
PT(Geom) _triangles;
unsigned int _mat_index = 0;
};
// These arrays are temporarily used during the build_graph run.
PT(Texture) *_textures;
CPT(RenderState) *_mat_states;
PT(Geom) *_geoms;
unsigned int *_geom_matindices;
Geoms *_geoms;
BoneMap _bonemap;
CharacterMap _charmap;