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FBX orphant embedded textures

pull/2741/head
Mike Samsonov 2019-11-01 12:29:54 +00:00
parent aa4c9fb5fa
commit 55c2a3edb9
6 changed files with 845 additions and 11 deletions
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8
code/FBX/FBXCompileConfig.h
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@ -47,6 +47,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define INCLUDED_AI_FBX_COMPILECONFIG_H
#include <map>
#include <set>
//
#if _MSC_VER > 1500 || (defined __GNUC___)
@ -54,16 +55,23 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# else
# define fbx_unordered_map map
# define fbx_unordered_multimap multimap
# define fbx_unordered_set set
# define fbx_unordered_multiset multiset
#endif
#ifdef ASSIMP_FBX_USE_UNORDERED_MULTIMAP
# include <unordered_map>
# include <unordered_set>
# if _MSC_VER > 1600
# define fbx_unordered_map unordered_map
# define fbx_unordered_multimap unordered_multimap
# define fbx_unordered_set unordered_set
# define fbx_unordered_multiset unordered_multiset
# else
# define fbx_unordered_map tr1::unordered_map
# define fbx_unordered_multimap tr1::unordered_multimap
# define fbx_unordered_set tr1::unordered_set
# define fbx_unordered_multiset tr1::unordered_multiset
# endif
#endif

57
code/FBX/FBXConverter.cpp
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@ -97,6 +97,14 @@ namespace Assimp {
// populate the node_anim_chain_bits map, which is needed
// to determine which nodes need to be generated.
ConvertAnimations();
// Embedded textures in FBX could be connected to nothing but to itself,
// for instance Texture -> Video connection only but not to the main graph,
// The idea here is to traverse all objects to find these Textures and convert them,
// so later during material conversion it will find converted texture in the textures_converted array.
if (doc.Settings().readTextures)
{
ConvertOrphantEmbeddedTextures();
}
ConvertRootNode();
if (doc.Settings().readAllMaterials) {
@ -1774,7 +1782,7 @@ namespace Assimp {
bool textureReady = false; //tells if our texture is ready (if it was loaded or if it was found)
unsigned int index;
VideoMap::const_iterator it = textures_converted.find(media);
VideoMap::const_iterator it = textures_converted.find(*media);
if (it != textures_converted.end()) {
index = (*it).second;
textureReady = true;
@ -1782,7 +1790,7 @@ namespace Assimp {
else {
if (media->ContentLength() > 0) {
index = ConvertVideo(*media);
textures_converted[media] = index;
textures_converted[*media] = index;
textureReady = true;
}
}
@ -2306,13 +2314,13 @@ void FBXConverter::SetShadingPropertiesRaw(aiMaterial* out_mat, const PropertyTa
if (media != nullptr && media->ContentLength() > 0) {
unsigned int index;
VideoMap::const_iterator it = textures_converted.find(media);
VideoMap::const_iterator it = textures_converted.find(*media);
if (it != textures_converted.end()) {
index = (*it).second;
}
else {
index = ConvertVideo(*media);
textures_converted[media] = index;
textures_converted[*media] = index;
}
// setup texture reference string (copied from ColladaLoader::FindFilenameForEffectTexture)
@ -3666,6 +3674,47 @@ void FBXConverter::SetShadingPropertiesRaw(aiMaterial* out_mat, const PropertyTa
}
}
void FBXConverter::ConvertOrphantEmbeddedTextures()
{
// in C++14 it could be:
// for (auto&& [id, object] : objects)
for (auto&& id_and_object : doc.Objects())
{
auto&& id = std::get<0>(id_and_object);
auto&& object = std::get<1>(id_and_object);
// If an object doesn't have parent
if (doc.ConnectionsBySource().count(id) == 0)
{
const Texture* realTexture = nullptr;
try
{
const auto& element = object->GetElement();
const Token& key = element.KeyToken();
const char* obtype = key.begin();
const size_t length = static_cast<size_t>(key.end() - key.begin());
if (strncmp(obtype, "Texture", length) == 0)
{
const Texture* texture = static_cast<const Texture*>(object->Get());
if (texture->Media() && texture->Media()->ContentLength() > 0)
{
realTexture = texture;
}
}
}
catch (...)
{
// do nothing
}
if (realTexture)
{
const Video* media = realTexture->Media();
unsigned int index = ConvertVideo(*media);
textures_converted[*media] = index;
}
}
}
}
// ------------------------------------------------------------------------------------------------
void ConvertToAssimpScene(aiScene* out, const Document& doc, bool removeEmptyBones)
{

14
code/FBX/FBXConverter.h
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@ -427,6 +427,10 @@ private:
// copy generated meshes, animations, lights, cameras and textures to the output scene
void TransferDataToScene();
// ------------------------------------------------------------------------------------------------
// FBX file could have embedded textures not connected to anything
void ConvertOrphantEmbeddedTextures();
private:
// 0: not assigned yet, others: index is value - 1
unsigned int defaultMaterialIndex;
@ -438,21 +442,21 @@ private:
std::vector<aiCamera*> cameras;
std::vector<aiTexture*> textures;
using MaterialMap = std::map<const Material*, unsigned int>;
using MaterialMap = std::fbx_unordered_map<const Material*, unsigned int>;
MaterialMap materials_converted;
using VideoMap = std::map<const Video*, unsigned int>;
using VideoMap = std::fbx_unordered_map<const Video, unsigned int>;
VideoMap textures_converted;
using MeshMap = std::map<const Geometry*, std::vector<unsigned int> >;
using MeshMap = std::fbx_unordered_map<const Geometry*, std::vector<unsigned int> >;
MeshMap meshes_converted;
// fixed node name -> which trafo chain components have animations?
using NodeAnimBitMap = std::map<std::string, unsigned int> ;
using NodeAnimBitMap = std::fbx_unordered_map<std::string, unsigned int> ;
NodeAnimBitMap node_anim_chain_bits;
// number of nodes with the same name
using NodeNameCache = std::unordered_map<std::string, unsigned int>;
using NodeNameCache = std::fbx_unordered_map<std::string, unsigned int>;
NodeNameCache mNodeNames;
// Deformer name is not the same as a bone name - it does contain the bone name though :)

34
code/FBX/FBXDocument.h
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@ -637,6 +637,15 @@ public:
return ptr;
}
bool operator==(const Video& other) const
{
return (
type == other.type
&& relativeFileName == other.relativeFileName
&& fileName == other.fileName
);
}
private:
std::string type;
std::string relativeFileName;
@ -1005,10 +1014,10 @@ public:
// during their entire lifetime (Document). FBX files have
// up to many thousands of objects (most of which we never use),
// so the memory overhead for them should be kept at a minimum.
typedef std::map<uint64_t, LazyObject*> ObjectMap;
typedef std::fbx_unordered_map<uint64_t, LazyObject*> ObjectMap;
typedef std::fbx_unordered_map<std::string, std::shared_ptr<const PropertyTable> > PropertyTemplateMap;
typedef std::multimap<uint64_t, const Connection*> ConnectionMap;
typedef std::fbx_unordered_multimap<uint64_t, const Connection*> ConnectionMap;
/** DOM class for global document settings, a single instance per document can
* be accessed via Document.Globals(). */
@ -1177,4 +1186,25 @@ private:
} // Namespace FBX
} // Namespace Assimp
namespace std
{
template <>
struct hash<const Assimp::FBX::Video>
{
std::size_t operator()(const Assimp::FBX::Video& video) const
{
using std::size_t;
using std::hash;
using std::string;
size_t res = 17;
res = res * 31 + hash<string>()(video.Name());
res = res * 31 + hash<string>()(video.RelativeFilename());
res = res * 31 + hash<string>()(video.Type());
return res;
}
};
}
#endif // INCLUDED_AI_FBX_DOCUMENT_H

723
test/models/FBX/box_orphant_embedded_texture.fbx 100644
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File diff suppressed because one or more lines are too long

20
test/unit/utFBXImporterExporter.cpp
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@ -263,3 +263,23 @@ TEST_F(utFBXImporterExporter, fbxTokenizeTestTest) {
//const aiScene* scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/FBX/transparentTest2.fbx", aiProcess_ValidateDataStructure);
//EXPECT_NE(nullptr, scene);
}
TEST_F(utFBXImporterExporter, importOrphantEmbeddedTextureTest) {
// see https://github.com/assimp/assimp/issues/1957
Assimp::Importer importer;
const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/FBX/box_orphant_embedded_texture.fbx", aiProcess_ValidateDataStructure);
EXPECT_NE(nullptr, scene);
EXPECT_EQ(1u, scene->mNumMaterials);
aiMaterial *mat = scene->mMaterials[0];
ASSERT_NE(nullptr, mat);
aiString path;
aiTextureMapMode modes[2];
ASSERT_EQ(aiReturn_SUCCESS, mat->GetTexture(aiTextureType_DIFFUSE, 0, &path, nullptr, nullptr, nullptr, nullptr, modes));
ASSERT_STREQ(path.C_Str(), "..\\Primitives\\GridGrey.tga");
ASSERT_EQ(1u, scene->mNumTextures);
ASSERT_TRUE(scene->mTextures[0]->pcData);
ASSERT_EQ(9026u, scene->mTextures[0]->mWidth) << "FBX ASCII base64 compression used for a texture.";
}