diff options
Diffstat (limited to 'libs/assimp/code/AssetLib/glTF2/glTF2Asset.inl')
| -rw-r--r-- | libs/assimp/code/AssetLib/glTF2/glTF2Asset.inl | 2069 |
1 files changed, 0 insertions, 2069 deletions
diff --git a/libs/assimp/code/AssetLib/glTF2/glTF2Asset.inl b/libs/assimp/code/AssetLib/glTF2/glTF2Asset.inl deleted file mode 100644 index ec481a7..0000000 --- a/libs/assimp/code/AssetLib/glTF2/glTF2Asset.inl +++ /dev/null @@ -1,2069 +0,0 @@ -/* -Open Asset Import Library (assimp) ----------------------------------------------------------------------- - -Copyright (c) 2006-2022, assimp team - -All rights reserved. - -Redistribution and use of this software in source and binary forms, -with or without modification, are permitted provided that the -following conditions are met: - -* Redistributions of source code must retain the above -copyright notice, this list of conditions and the -following disclaimer. - -* Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the -following disclaimer in the documentation and/or other -materials provided with the distribution. - -* Neither the name of the assimp team, nor the names of its -contributors may be used to endorse or promote products -derived from this software without specific prior -written permission of the assimp team. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - ----------------------------------------------------------------------- -*/ - -#include "AssetLib/glTF/glTFCommon.h" - -#include <assimp/MemoryIOWrapper.h> -#include <assimp/StringUtils.h> -#include <assimp/DefaultLogger.hpp> -#include <assimp/Base64.hpp> - -// clang-format off -#ifdef ASSIMP_ENABLE_DRACO - -// Google draco library headers spew many warnings. Bad Google, no cookie -# if _MSC_VER -# pragma warning(push) -# pragma warning(disable : 4018) // Signed/unsigned mismatch -# pragma warning(disable : 4804) // Unsafe use of type 'bool' -# elif defined(__clang__) -# pragma clang diagnostic push -# pragma clang diagnostic ignored "-Wsign-compare" -# elif defined(__GNUC__) -# pragma GCC diagnostic push -# if (__GNUC__ > 4) -# pragma GCC diagnostic ignored "-Wbool-compare" -# endif -# pragma GCC diagnostic ignored "-Wsign-compare" -#endif - -#include "draco/compression/decode.h" -#include "draco/core/decoder_buffer.h" - -#if _MSC_VER -# pragma warning(pop) -#elif defined(__clang__) -# pragma clang diagnostic pop -#elif defined(__GNUC__) -# pragma GCC diagnostic pop -#endif -#ifndef DRACO_MESH_COMPRESSION_SUPPORTED -# error glTF: KHR_draco_mesh_compression: draco library must have DRACO_MESH_COMPRESSION_SUPPORTED -#endif -#endif -// clang-format on - -using namespace Assimp; -using namespace glTFCommon; - -namespace glTF2 { - -namespace { - -// -// JSON Value reading helpers -// -inline CustomExtension ReadExtensions(const char *name, Value &obj) { - CustomExtension ret; - ret.name = name; - if (obj.IsObject()) { - ret.mValues.isPresent = true; - for (auto it = obj.MemberBegin(); it != obj.MemberEnd(); ++it) { - auto &val = it->value; - ret.mValues.value.push_back(ReadExtensions(it->name.GetString(), val)); - } - } else if (obj.IsArray()) { - ret.mValues.value.reserve(obj.Size()); - ret.mValues.isPresent = true; - for (unsigned int i = 0; i < obj.Size(); ++i) { - ret.mValues.value.push_back(ReadExtensions(name, obj[i])); - } - } else if (obj.IsNumber()) { - if (obj.IsUint64()) { - ret.mUint64Value.value = obj.GetUint64(); - ret.mUint64Value.isPresent = true; - } else if (obj.IsInt64()) { - ret.mInt64Value.value = obj.GetInt64(); - ret.mInt64Value.isPresent = true; - } else if (obj.IsDouble()) { - ret.mDoubleValue.value = obj.GetDouble(); - ret.mDoubleValue.isPresent = true; - } - } else if (obj.IsString()) { - ReadValue(obj, ret.mStringValue); - ret.mStringValue.isPresent = true; - } else if (obj.IsBool()) { - ret.mBoolValue.value = obj.GetBool(); - ret.mBoolValue.isPresent = true; - } - return ret; -} - -inline void CopyData(size_t count, const uint8_t *src, size_t src_stride, - uint8_t *dst, size_t dst_stride) { - if (src_stride == dst_stride) { - memcpy(dst, src, count * src_stride); - return; - } - - size_t sz = std::min(src_stride, dst_stride); - for (size_t i = 0; i < count; ++i) { - memcpy(dst, src, sz); - if (sz < dst_stride) { - memset(dst + sz, 0, dst_stride - sz); - } - src += src_stride; - dst += dst_stride; - } -} - -void SetVector(vec4 &v, const float (&in)[4]) { - v[0] = in[0]; - v[1] = in[1]; - v[2] = in[2]; - v[3] = in[3]; -} - -void SetVector(vec3 &v, const float (&in)[3]) { - v[0] = in[0]; - v[1] = in[1]; - v[2] = in[2]; -} - -template <int N> -inline int Compare(const char *attr, const char (&str)[N]) { - return (strncmp(attr, str, N - 1) == 0) ? N - 1 : 0; -} - -#if _MSC_VER -#pragma warning(push) -#pragma warning(disable : 4706) -#endif // _MSC_VER - -inline bool GetAttribVector(Mesh::Primitive &p, const char *attr, Mesh::AccessorList *&v, int &pos) { - if ((pos = Compare(attr, "POSITION"))) { - v = &(p.attributes.position); - } else if ((pos = Compare(attr, "NORMAL"))) { - v = &(p.attributes.normal); - } else if ((pos = Compare(attr, "TANGENT"))) { - v = &(p.attributes.tangent); - } else if ((pos = Compare(attr, "TEXCOORD"))) { - v = &(p.attributes.texcoord); - } else if ((pos = Compare(attr, "COLOR"))) { - v = &(p.attributes.color); - } else if ((pos = Compare(attr, "JOINT"))) { - v = &(p.attributes.joint); - } else if ((pos = Compare(attr, "JOINTMATRIX"))) { - v = &(p.attributes.jointmatrix); - } else if ((pos = Compare(attr, "WEIGHT"))) { - v = &(p.attributes.weight); - } else - return false; - return true; -} - -inline bool GetAttribTargetVector(Mesh::Primitive &p, const int targetIndex, const char *attr, Mesh::AccessorList *&v, int &pos) { - if ((pos = Compare(attr, "POSITION"))) { - v = &(p.targets[targetIndex].position); - } else if ((pos = Compare(attr, "NORMAL"))) { - v = &(p.targets[targetIndex].normal); - } else if ((pos = Compare(attr, "TANGENT"))) { - v = &(p.targets[targetIndex].tangent); - } else - return false; - return true; -} - -} // namespace - -inline Value *Object::FindString(Value &val, const char *memberId) { - return FindStringInContext(val, memberId, id.c_str(), name.c_str()); -} - -inline Value *Object::FindNumber(Value &val, const char *memberId) { - return FindNumberInContext(val, memberId, id.c_str(), name.c_str()); -} - -inline Value *Object::FindUInt(Value &val, const char *memberId) { - return FindUIntInContext(val, memberId, id.c_str(), name.c_str()); -} - -inline Value *Object::FindArray(Value &val, const char *memberId) { - return FindArrayInContext(val, memberId, id.c_str(), name.c_str()); -} - -inline Value *Object::FindObject(Value &val, const char *memberId) { - return FindObjectInContext(val, memberId, id.c_str(), name.c_str()); -} - -inline Value *Object::FindExtension(Value &val, const char *extensionId) { - return FindExtensionInContext(val, extensionId, id.c_str(), name.c_str()); -} - -inline void Object::ReadExtensions(Value &val) { - if (Value *curExtensions = FindObject(val, "extensions")) { - this->customExtensions = glTF2::ReadExtensions("extensions", *curExtensions); - } -} - -inline void Object::ReadExtras(Value &val) { - if (Value *curExtras = FindObject(val, "extras")) { - this->extras = glTF2::ReadExtensions("extras", *curExtras); - } -} - -#ifdef ASSIMP_ENABLE_DRACO - -template <typename T> -inline void CopyFaceIndex_Draco(Buffer &decodedIndexBuffer, const draco::Mesh &draco_mesh) { - const size_t faceStride = sizeof(T) * 3; - for (draco::FaceIndex f(0); f < draco_mesh.num_faces(); ++f) { - const draco::Mesh::Face &face = draco_mesh.face(f); - T indices[3] = { static_cast<T>(face[0].value()), static_cast<T>(face[1].value()), static_cast<T>(face[2].value()) }; - memcpy(decodedIndexBuffer.GetPointer() + (f.value() * faceStride), &indices[0], faceStride); - } -} - -inline void SetDecodedIndexBuffer_Draco(const draco::Mesh &dracoMesh, Mesh::Primitive &prim) { - if (!prim.indices || dracoMesh.num_faces() == 0) - return; - - // Create a decoded Index buffer (if there is one) - size_t componentBytes = prim.indices->GetBytesPerComponent(); - - std::unique_ptr<Buffer> decodedIndexBuffer(new Buffer()); - decodedIndexBuffer->Grow(dracoMesh.num_faces() * 3 * componentBytes); - - // If accessor uses the same size as draco implementation, copy the draco buffer directly - - // Usually uint32_t but shouldn't assume - if (sizeof(dracoMesh.face(draco::FaceIndex(0))[0]) == componentBytes) { - memcpy(decodedIndexBuffer->GetPointer(), &dracoMesh.face(draco::FaceIndex(0))[0], decodedIndexBuffer->byteLength); - return; - } - - // Not same size, convert - switch (componentBytes) { - case sizeof(uint32_t): - CopyFaceIndex_Draco<uint32_t>(*decodedIndexBuffer, dracoMesh); - break; - case sizeof(uint16_t): - CopyFaceIndex_Draco<uint16_t>(*decodedIndexBuffer, dracoMesh); - break; - case sizeof(uint8_t): - CopyFaceIndex_Draco<uint8_t>(*decodedIndexBuffer, dracoMesh); - break; - default: - ai_assert(false); - break; - } - - // Assign this alternate data buffer to the accessor - prim.indices->decodedBuffer.swap(decodedIndexBuffer); -} - -template <typename T> -static bool GetAttributeForAllPoints_Draco(const draco::Mesh &dracoMesh, - const draco::PointAttribute &dracoAttribute, - Buffer &outBuffer) { - size_t byteOffset = 0; - T values[4] = { 0, 0, 0, 0 }; - for (draco::PointIndex i(0); i < dracoMesh.num_points(); ++i) { - const draco::AttributeValueIndex val_index = dracoAttribute.mapped_index(i); - if (!dracoAttribute.ConvertValue<T>(val_index, dracoAttribute.num_components(), values)) { - return false; - } - - memcpy(outBuffer.GetPointer() + byteOffset, &values[0], sizeof(T) * dracoAttribute.num_components()); - byteOffset += sizeof(T) * dracoAttribute.num_components(); - } - - return true; -} - -inline void SetDecodedAttributeBuffer_Draco(const draco::Mesh &dracoMesh, uint32_t dracoAttribId, Accessor &accessor) { - // Create decoded buffer - const draco::PointAttribute *pDracoAttribute = dracoMesh.GetAttributeByUniqueId(dracoAttribId); - if (pDracoAttribute == nullptr) { - throw DeadlyImportError("GLTF: Invalid draco attribute id: ", dracoAttribId); - } - - size_t componentBytes = accessor.GetBytesPerComponent(); - - std::unique_ptr<Buffer> decodedAttribBuffer(new Buffer()); - decodedAttribBuffer->Grow(dracoMesh.num_points() * pDracoAttribute->num_components() * componentBytes); - - switch (accessor.componentType) { - case ComponentType_BYTE: - GetAttributeForAllPoints_Draco<int8_t>(dracoMesh, *pDracoAttribute, *decodedAttribBuffer); - break; - case ComponentType_UNSIGNED_BYTE: - GetAttributeForAllPoints_Draco<uint8_t>(dracoMesh, *pDracoAttribute, *decodedAttribBuffer); - break; - case ComponentType_SHORT: - GetAttributeForAllPoints_Draco<int16_t>(dracoMesh, *pDracoAttribute, *decodedAttribBuffer); - break; - case ComponentType_UNSIGNED_SHORT: - GetAttributeForAllPoints_Draco<uint16_t>(dracoMesh, *pDracoAttribute, *decodedAttribBuffer); - break; - case ComponentType_UNSIGNED_INT: - GetAttributeForAllPoints_Draco<uint32_t>(dracoMesh, *pDracoAttribute, *decodedAttribBuffer); - break; - case ComponentType_FLOAT: - GetAttributeForAllPoints_Draco<float>(dracoMesh, *pDracoAttribute, *decodedAttribBuffer); - break; - default: - ai_assert(false); - break; - } - - // Assign this alternate data buffer to the accessor - accessor.decodedBuffer.swap(decodedAttribBuffer); -} - -#endif // ASSIMP_ENABLE_DRACO - -// -// LazyDict methods -// - -template <class T> -inline LazyDict<T>::LazyDict(Asset &asset, const char *dictId, const char *extId) : - mDictId(dictId), - mExtId(extId), - mDict(0), - mAsset(asset) { - asset.mDicts.push_back(this); // register to the list of dictionaries -} - -template <class T> -inline LazyDict<T>::~LazyDict() { - for (size_t i = 0; i < mObjs.size(); ++i) { - delete mObjs[i]; - } -} - -template <class T> -inline void LazyDict<T>::AttachToDocument(Document &doc) { - Value *container = nullptr; - const char *context = nullptr; - - if (mExtId) { - if (Value *exts = FindObject(doc, "extensions")) { - container = FindObjectInContext(*exts, mExtId, "extensions"); - context = mExtId; - } - } else { - container = &doc; - context = "the document"; - } - - if (container) { - mDict = FindArrayInContext(*container, mDictId, context); - } -} - -template <class T> -inline void LazyDict<T>::DetachFromDocument() { - mDict = nullptr; -} - -template <class T> -unsigned int LazyDict<T>::Remove(const char *id) { - id = T::TranslateId(mAsset, id); - - typename IdDict::iterator objIt = mObjsById.find(id); - - if (objIt == mObjsById.end()) { - throw DeadlyExportError("GLTF: Object with id \"" + std::string(id) + "\" is not found"); - } - - const unsigned int index = objIt->second; - - mAsset.mUsedIds[id] = false; - mObjsById.erase(id); - mObjsByOIndex.erase(index); - delete mObjs[index]; - mObjs.erase(mObjs.begin() + index); - - //update index of object in mObjs; - for (unsigned int i = index; i < mObjs.size(); ++i) { - T *obj = mObjs[i]; - - obj->index = i; - } - - for (IdDict::iterator it = mObjsById.begin(); it != mObjsById.end(); ++it) { - if (it->second <= index) { - continue; - } - - mObjsById[it->first] = it->second - 1; - } - - for (Dict::iterator it = mObjsByOIndex.begin(); it != mObjsByOIndex.end(); ++it) { - if (it->second <= index) { - continue; - } - - mObjsByOIndex[it->first] = it->second - 1; - } - - return index; -} - -template <class T> -Ref<T> LazyDict<T>::Retrieve(unsigned int i) { - - typename Dict::iterator it = mObjsByOIndex.find(i); - if (it != mObjsByOIndex.end()) { // already created? - return Ref<T>(mObjs, it->second); - } - - // read it from the JSON object - if (!mDict) { - throw DeadlyImportError("GLTF: Missing section \"", mDictId, "\""); - } - - if (!mDict->IsArray()) { - throw DeadlyImportError("GLTF: Field \"", mDictId, "\" is not an array"); - } - - if (i >= mDict->Size()) { - throw DeadlyImportError("GLTF: Array index ", i, " is out of bounds (", mDict->Size(), ") for \"", mDictId, "\""); - } - - Value &obj = (*mDict)[i]; - - if (!obj.IsObject()) { - throw DeadlyImportError("GLTF: Object at index ", i, " in array \"", mDictId, "\" is not a JSON object"); - } - - if (mRecursiveReferenceCheck.find(i) != mRecursiveReferenceCheck.end()) { - throw DeadlyImportError("GLTF: Object at index ", i, " in array \"", mDictId, "\" has recursive reference to itself"); - } - mRecursiveReferenceCheck.insert(i); - - // Unique ptr prevents memory leak in case of Read throws an exception - auto inst = std::unique_ptr<T>(new T()); - // Try to make this human readable so it can be used in error messages. - inst->id = std::string(mDictId) + "[" + ai_to_string(i) + "]"; - inst->oIndex = i; - ReadMember(obj, "name", inst->name); - inst->Read(obj, mAsset); - inst->ReadExtensions(obj); - inst->ReadExtras(obj); - - Ref<T> result = Add(inst.release()); - mRecursiveReferenceCheck.erase(i); - return result; -} - -template <class T> -Ref<T> LazyDict<T>::Get(unsigned int i) { - return Ref<T>(mObjs, i); -} - -template <class T> -Ref<T> LazyDict<T>::Get(const char *id) { - id = T::TranslateId(mAsset, id); - - typename IdDict::iterator it = mObjsById.find(id); - if (it != mObjsById.end()) { // already created? - return Ref<T>(mObjs, it->second); - } - - return Ref<T>(); -} - -template <class T> -Ref<T> LazyDict<T>::Add(T *obj) { - unsigned int idx = unsigned(mObjs.size()); - mObjs.push_back(obj); - mObjsByOIndex[obj->oIndex] = idx; - mObjsById[obj->id] = idx; - mAsset.mUsedIds[obj->id] = true; - return Ref<T>(mObjs, idx); -} - -template <class T> -Ref<T> LazyDict<T>::Create(const char *id) { - Asset::IdMap::iterator it = mAsset.mUsedIds.find(id); - if (it != mAsset.mUsedIds.end()) { - throw DeadlyImportError("GLTF: two objects with the same ID exist"); - } - T *inst = new T(); - unsigned int idx = unsigned(mObjs.size()); - inst->id = id; - inst->index = idx; - inst->oIndex = idx; - return Add(inst); -} - -// -// glTF dictionary objects methods -// -inline Buffer::Buffer() : - byteLength(0), - type(Type_arraybuffer), - EncodedRegion_Current(nullptr), - mIsSpecial(false) {} - -inline Buffer::~Buffer() { - for (SEncodedRegion *reg : EncodedRegion_List) - delete reg; -} - -inline const char *Buffer::TranslateId(Asset & /*r*/, const char *id) { - return id; -} - -inline void Buffer::Read(Value &obj, Asset &r) { - size_t statedLength = MemberOrDefault<size_t>(obj, "byteLength", 0); - byteLength = statedLength; - - Value *it = FindString(obj, "uri"); - if (!it) { - if (statedLength > 0) { - throw DeadlyImportError("GLTF: buffer with non-zero length missing the \"uri\" attribute"); - } - return; - } - - const char *uri = it->GetString(); - - glTFCommon::Util::DataURI dataURI; - if (ParseDataURI(uri, it->GetStringLength(), dataURI)) { - if (dataURI.base64) { - uint8_t *data = nullptr; - this->byteLength = Base64::Decode(dataURI.data, dataURI.dataLength, data); - this->mData.reset(data, std::default_delete<uint8_t[]>()); - - if (statedLength > 0 && this->byteLength != statedLength) { - throw DeadlyImportError("GLTF: buffer \"", id, "\", expected ", ai_to_string(statedLength), - " bytes, but found ", ai_to_string(dataURI.dataLength)); - } - } else { // assume raw data - if (statedLength != dataURI.dataLength) { - throw DeadlyImportError("GLTF: buffer \"", id, "\", expected ", ai_to_string(statedLength), - " bytes, but found ", ai_to_string(dataURI.dataLength)); - } - - this->mData.reset(new uint8_t[dataURI.dataLength], std::default_delete<uint8_t[]>()); - memcpy(this->mData.get(), dataURI.data, dataURI.dataLength); - } - } else { // Local file - if (byteLength > 0) { - std::string dir = !r.mCurrentAssetDir.empty() ? (r.mCurrentAssetDir.back() == '/' ? r.mCurrentAssetDir : r.mCurrentAssetDir + '/') : ""; - - IOStream *file = r.OpenFile(dir + uri, "rb"); - if (file) { - bool ok = LoadFromStream(*file, byteLength); - delete file; - - if (!ok) - throw DeadlyImportError("GLTF: error while reading referenced file \"", uri, "\""); - } else { - throw DeadlyImportError("GLTF: could not open referenced file \"", uri, "\""); - } - } - } -} - -inline bool Buffer::LoadFromStream(IOStream &stream, size_t length, size_t baseOffset) { - byteLength = length ? length : stream.FileSize(); - - if (byteLength > stream.FileSize()) { - throw DeadlyImportError("GLTF: Invalid byteLength exceeds size of actual data."); - } - - if (baseOffset) { - stream.Seek(baseOffset, aiOrigin_SET); - } - - mData.reset(new uint8_t[byteLength], std::default_delete<uint8_t[]>()); - - if (stream.Read(mData.get(), byteLength, 1) != 1) { - return false; - } - return true; -} - -inline void Buffer::EncodedRegion_Mark(const size_t pOffset, const size_t pEncodedData_Length, uint8_t *pDecodedData, const size_t pDecodedData_Length, const std::string &pID) { - // Check pointer to data - if (pDecodedData == nullptr) throw DeadlyImportError("GLTF: for marking encoded region pointer to decoded data must be provided."); - - // Check offset - if (pOffset > byteLength) { - const uint8_t val_size = 32; - - char val[val_size]; - - ai_snprintf(val, val_size, AI_SIZEFMT, pOffset); - throw DeadlyImportError("GLTF: incorrect offset value (", val, ") for marking encoded region."); - } - - // Check length - if ((pOffset + pEncodedData_Length) > byteLength) { - const uint8_t val_size = 64; - - char val[val_size]; - - ai_snprintf(val, val_size, AI_SIZEFMT "/" AI_SIZEFMT, pOffset, pEncodedData_Length); - throw DeadlyImportError("GLTF: encoded region with offset/length (", val, ") is out of range."); - } - - // Add new region - EncodedRegion_List.push_back(new SEncodedRegion(pOffset, pEncodedData_Length, pDecodedData, pDecodedData_Length, pID)); - // And set new value for "byteLength" - byteLength += (pDecodedData_Length - pEncodedData_Length); -} - -inline void Buffer::EncodedRegion_SetCurrent(const std::string &pID) { - if ((EncodedRegion_Current != nullptr) && (EncodedRegion_Current->ID == pID)) { - return; - } - - for (SEncodedRegion *reg : EncodedRegion_List) { - if (reg->ID == pID) { - EncodedRegion_Current = reg; - return; - } - } - - throw DeadlyImportError("GLTF: EncodedRegion with ID: \"", pID, "\" not found."); -} - -inline bool Buffer::ReplaceData(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t *pReplace_Data, const size_t pReplace_Count) { - - if ((pBufferData_Count == 0) || (pReplace_Count == 0) || (pReplace_Data == nullptr)) { - return false; - } - - const size_t new_data_size = byteLength + pReplace_Count - pBufferData_Count; - uint8_t *new_data = new uint8_t[new_data_size]; - // Copy data which place before replacing part. - ::memcpy(new_data, mData.get(), pBufferData_Offset); - // Copy new data. - ::memcpy(&new_data[pBufferData_Offset], pReplace_Data, pReplace_Count); - // Copy data which place after replacing part. - ::memcpy(&new_data[pBufferData_Offset + pReplace_Count], &mData.get()[pBufferData_Offset + pBufferData_Count], pBufferData_Offset); - // Apply new data - mData.reset(new_data, std::default_delete<uint8_t[]>()); - byteLength = new_data_size; - - return true; -} - -inline bool Buffer::ReplaceData_joint(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t *pReplace_Data, const size_t pReplace_Count) { - if ((pBufferData_Count == 0) || (pReplace_Count == 0) || (pReplace_Data == nullptr)) { - return false; - } - - const size_t new_data_size = byteLength + pReplace_Count - pBufferData_Count; - uint8_t *new_data = new uint8_t[new_data_size]; - // Copy data which place before replacing part. - memcpy(new_data, mData.get(), pBufferData_Offset); - // Copy new data. - memcpy(&new_data[pBufferData_Offset], pReplace_Data, pReplace_Count); - // Copy data which place after replacing part. - memcpy(&new_data[pBufferData_Offset + pReplace_Count], &mData.get()[pBufferData_Offset + pBufferData_Count], new_data_size - (pBufferData_Offset + pReplace_Count)); - // Apply new data - mData.reset(new_data, std::default_delete<uint8_t[]>()); - byteLength = new_data_size; - - return true; -} - -inline size_t Buffer::AppendData(uint8_t *data, size_t length) { - const size_t offset = this->byteLength; - - // Force alignment to 4 bits - const size_t paddedLength = (length + 3) & ~3; - Grow(paddedLength); - memcpy(mData.get() + offset, data, length); - memset(mData.get() + offset + length, 0, paddedLength - length); - return offset; -} - -inline void Buffer::Grow(size_t amount) { - if (amount <= 0) { - return; - } - - // Capacity is big enough - if (capacity >= byteLength + amount) { - byteLength += amount; - return; - } - - // Just allocate data which we need - capacity = byteLength + amount; - - uint8_t *b = new uint8_t[capacity]; - if (nullptr != mData) { - memcpy(b, mData.get(), byteLength); - } - mData.reset(b, std::default_delete<uint8_t[]>()); - byteLength += amount; -} - -// -// struct BufferView -// -inline void BufferView::Read(Value &obj, Asset &r) { - if (Value *bufferVal = FindUInt(obj, "buffer")) { - buffer = r.buffers.Retrieve(bufferVal->GetUint()); - } - - if (!buffer) { - throw DeadlyImportError("GLTF: Buffer view without valid buffer."); - } - - byteOffset = MemberOrDefault(obj, "byteOffset", size_t(0)); - byteLength = MemberOrDefault(obj, "byteLength", size_t(0)); - byteStride = MemberOrDefault(obj, "byteStride", 0u); - - // Check length - if ((byteOffset + byteLength) > buffer->byteLength) { - throw DeadlyImportError("GLTF: Buffer view with offset/length (", byteOffset, "/", byteLength, ") is out of range."); - } -} - -inline uint8_t *BufferView::GetPointer(size_t accOffset) { - if (!buffer) { - return nullptr; - } - uint8_t *basePtr = buffer->GetPointer(); - if (!basePtr) { - return nullptr; - } - - size_t offset = accOffset + byteOffset; - if (buffer->EncodedRegion_Current != nullptr) { - const size_t begin = buffer->EncodedRegion_Current->Offset; - const size_t end = begin + buffer->EncodedRegion_Current->DecodedData_Length; - if ((offset >= begin) && (offset < end)) { - return &buffer->EncodedRegion_Current->DecodedData[offset - begin]; - } - } - - return basePtr + offset; -} - -// -// struct Accessor -// -inline void Accessor::Sparse::PopulateData(size_t numBytes, uint8_t *bytes) { - if (bytes) { - data.assign(bytes, bytes + numBytes); - } else { - data.resize(numBytes, 0x00); - } -} - -inline void Accessor::Sparse::PatchData(unsigned int elementSize) { - uint8_t *pIndices = indices->GetPointer(indicesByteOffset); - const unsigned int indexSize = int(ComponentTypeSize(indicesType)); - uint8_t *indicesEnd = pIndices + count * indexSize; - - uint8_t *pValues = values->GetPointer(valuesByteOffset); - while (pIndices != indicesEnd) { - size_t offset; - switch (indicesType) { - case ComponentType_UNSIGNED_BYTE: - offset = *pIndices; - break; - case ComponentType_UNSIGNED_SHORT: - offset = *reinterpret_cast<uint16_t *>(pIndices); - break; - case ComponentType_UNSIGNED_INT: - offset = *reinterpret_cast<uint32_t *>(pIndices); - break; - default: - // have fun with float and negative values from signed types as indices. - throw DeadlyImportError("Unsupported component type in index."); - } - - offset *= elementSize; - - if (offset + elementSize > data.size()) { - throw DeadlyImportError("Invalid sparse accessor. Byte offset for patching points outside allocated memory."); - } - - std::memcpy(data.data() + offset, pValues, elementSize); - - pValues += elementSize; - pIndices += indexSize; - } -} - -inline void Accessor::Read(Value &obj, Asset &r) { - if (Value *bufferViewVal = FindUInt(obj, "bufferView")) { - bufferView = r.bufferViews.Retrieve(bufferViewVal->GetUint()); - } - - byteOffset = MemberOrDefault(obj, "byteOffset", size_t(0)); - componentType = MemberOrDefault(obj, "componentType", ComponentType_BYTE); - { - const Value *countValue = FindUInt(obj, "count"); - if (!countValue) { - throw DeadlyImportError("A count value is required, when reading ", id.c_str(), name.empty() ? "" : " (" + name + ")"); - } - count = countValue->GetUint(); - } - - const char *typestr; - type = ReadMember(obj, "type", typestr) ? AttribType::FromString(typestr) : AttribType::SCALAR; - - if (bufferView) { - // Check length - unsigned long long byteLength = (unsigned long long)GetBytesPerComponent() * (unsigned long long)count; - - // handle integer overflow - if (byteLength < count) { - throw DeadlyImportError("GLTF: Accessor with offset/count (", byteOffset, "/", count, ") is out of range."); - } - - if ((byteOffset + byteLength) > bufferView->byteLength || (bufferView->byteOffset + byteOffset + byteLength) > bufferView->buffer->byteLength) { - throw DeadlyImportError("GLTF: Accessor with offset/length (", byteOffset, "/", byteLength, ") is out of range."); - } - } - - if (Value *sparseValue = FindObject(obj, "sparse")) { - sparse.reset(new Sparse); - // count - ReadMember(*sparseValue, "count", sparse->count); - - // indices - if (Value *indicesValue = FindObject(*sparseValue, "indices")) { - //indices bufferView - Value *indiceViewID = FindUInt(*indicesValue, "bufferView"); - sparse->indices = r.bufferViews.Retrieve(indiceViewID->GetUint()); - //indices byteOffset - sparse->indicesByteOffset = MemberOrDefault(*indicesValue, "byteOffset", size_t(0)); - //indices componentType - sparse->indicesType = MemberOrDefault(*indicesValue, "componentType", ComponentType_BYTE); - //sparse->indices->Read(*indicesValue, r); - } else { - // indicesType - sparse->indicesType = MemberOrDefault(*sparseValue, "componentType", ComponentType_UNSIGNED_SHORT); - } - - // value - if (Value *valuesValue = FindObject(*sparseValue, "values")) { - //value bufferView - Value *valueViewID = FindUInt(*valuesValue, "bufferView"); - sparse->values = r.bufferViews.Retrieve(valueViewID->GetUint()); - //value byteOffset - sparse->valuesByteOffset = MemberOrDefault(*valuesValue, "byteOffset", size_t(0)); - //sparse->values->Read(*valuesValue, r); - } - - - const unsigned int elementSize = GetElementSize(); - const size_t dataSize = count * elementSize; - sparse->PopulateData(dataSize, bufferView ? bufferView->GetPointer(byteOffset) : 0); - sparse->PatchData(elementSize); - } -} - -inline unsigned int Accessor::GetNumComponents() { - return AttribType::GetNumComponents(type); -} - -inline unsigned int Accessor::GetBytesPerComponent() { - return int(ComponentTypeSize(componentType)); -} - -inline unsigned int Accessor::GetElementSize() { - return GetNumComponents() * GetBytesPerComponent(); -} - -inline uint8_t *Accessor::GetPointer() { - if (decodedBuffer) - return decodedBuffer->GetPointer(); - - if (sparse) - return sparse->data.data(); - - if (!bufferView || !bufferView->buffer) return nullptr; - uint8_t *basePtr = bufferView->buffer->GetPointer(); - if (!basePtr) return nullptr; - - size_t offset = byteOffset + bufferView->byteOffset; - - // Check if region is encoded. - if (bufferView->buffer->EncodedRegion_Current != nullptr) { - const size_t begin = bufferView->buffer->EncodedRegion_Current->Offset; - const size_t end = begin + bufferView->buffer->EncodedRegion_Current->DecodedData_Length; - - if ((offset >= begin) && (offset < end)) - return &bufferView->buffer->EncodedRegion_Current->DecodedData[offset - begin]; - } - - return basePtr + offset; -} - -inline size_t Accessor::GetStride() { - // Decoded buffer is always packed - if (decodedBuffer) - return GetElementSize(); - - // Sparse and normal bufferView - return (bufferView && bufferView->byteStride ? bufferView->byteStride : GetElementSize()); -} - -inline size_t Accessor::GetMaxByteSize() { - if (decodedBuffer) - return decodedBuffer->byteLength; - - return (bufferView ? bufferView->byteLength : sparse->data.size()); -} - -template <class T> -void Accessor::ExtractData(T *&outData) { - uint8_t *data = GetPointer(); - if (!data) { - throw DeadlyImportError("GLTF2: data is null when extracting data from ", getContextForErrorMessages(id, name)); - } - - const size_t elemSize = GetElementSize(); - const size_t totalSize = elemSize * count; - - const size_t stride = GetStride(); - - const size_t targetElemSize = sizeof(T); - - if (elemSize > targetElemSize) { - throw DeadlyImportError("GLTF: elemSize ", elemSize, " > targetElemSize ", targetElemSize, " in ", getContextForErrorMessages(id, name)); - } - - const size_t maxSize = GetMaxByteSize(); - if (count * stride > maxSize) { - throw DeadlyImportError("GLTF: count*stride ", (count * stride), " > maxSize ", maxSize, " in ", getContextForErrorMessages(id, name)); - } - - outData = new T[count]; - if (stride == elemSize && targetElemSize == elemSize) { - memcpy(outData, data, totalSize); - } else { - for (size_t i = 0; i < count; ++i) { - memcpy(outData + i, data + i * stride, elemSize); - } - } -} - -inline void Accessor::WriteData(size_t _count, const void *src_buffer, size_t src_stride) { - uint8_t *buffer_ptr = bufferView->buffer->GetPointer(); - size_t offset = byteOffset + bufferView->byteOffset; - - size_t dst_stride = GetNumComponents() * GetBytesPerComponent(); - - const uint8_t *src = reinterpret_cast<const uint8_t *>(src_buffer); - uint8_t *dst = reinterpret_cast<uint8_t *>(buffer_ptr + offset); - - ai_assert(dst + _count * dst_stride <= buffer_ptr + bufferView->buffer->byteLength); - CopyData(_count, src, src_stride, dst, dst_stride); -} - -inline void Accessor::WriteSparseValues(size_t _count, const void *src_data, size_t src_dataStride) { - if (!sparse) - return; - - // values - uint8_t *value_buffer_ptr = sparse->values->buffer->GetPointer(); - size_t value_offset = sparse->valuesByteOffset + sparse->values->byteOffset; - size_t value_dst_stride = GetNumComponents() * GetBytesPerComponent(); - const uint8_t *value_src = reinterpret_cast<const uint8_t *>(src_data); - uint8_t *value_dst = reinterpret_cast<uint8_t *>(value_buffer_ptr + value_offset); - ai_assert(value_dst + _count * value_dst_stride <= value_buffer_ptr + sparse->values->buffer->byteLength); - CopyData(_count, value_src, src_dataStride, value_dst, value_dst_stride); -} - -inline void Accessor::WriteSparseIndices(size_t _count, const void *src_idx, size_t src_idxStride) { - if (!sparse) - return; - - // indices - uint8_t *indices_buffer_ptr = sparse->indices->buffer->GetPointer(); - size_t indices_offset = sparse->indicesByteOffset + sparse->indices->byteOffset; - size_t indices_dst_stride = 1 * sizeof(unsigned short); - const uint8_t *indices_src = reinterpret_cast<const uint8_t *>(src_idx); - uint8_t *indices_dst = reinterpret_cast<uint8_t *>(indices_buffer_ptr + indices_offset); - ai_assert(indices_dst + _count * indices_dst_stride <= indices_buffer_ptr + sparse->indices->buffer->byteLength); - CopyData(_count, indices_src, src_idxStride, indices_dst, indices_dst_stride); -} - -inline Accessor::Indexer::Indexer(Accessor &acc) : - accessor(acc), - data(acc.GetPointer()), - elemSize(acc.GetElementSize()), - stride(acc.GetStride()) { -} - -//! Accesses the i-th value as defined by the accessor -template <class T> -T Accessor::Indexer::GetValue(int i) { - ai_assert(data); - if (i * stride >= accessor.GetMaxByteSize()) { - throw DeadlyImportError("GLTF: Invalid index ", i, ", count out of range for buffer with stride ", stride, " and size ", accessor.GetMaxByteSize(), "."); - } - // Ensure that the memcpy doesn't overwrite the local. - const size_t sizeToCopy = std::min(elemSize, sizeof(T)); - T value = T(); - // Assume platform endianness matches GLTF binary data (which is little-endian). - memcpy(&value, data + i * stride, sizeToCopy); - return value; -} - -inline Image::Image() : - width(0), - height(0), - mDataLength(0) { -} - -inline void Image::Read(Value &obj, Asset &r) { - //basisu: no need to handle .ktx2, .basis, load as is - if (!mDataLength) { - Value *curUri = FindString(obj, "uri"); - if (nullptr != curUri) { - const char *uristr = curUri->GetString(); - - glTFCommon::Util::DataURI dataURI; - if (ParseDataURI(uristr, curUri->GetStringLength(), dataURI)) { - mimeType = dataURI.mediaType; - if (dataURI.base64) { - uint8_t *ptr = nullptr; - mDataLength = Base64::Decode(dataURI.data, dataURI.dataLength, ptr); - mData.reset(ptr); - } - } else { - this->uri = uristr; - } - } else if (Value *bufferViewVal = FindUInt(obj, "bufferView")) { - this->bufferView = r.bufferViews.Retrieve(bufferViewVal->GetUint()); - if (Value *mtype = FindString(obj, "mimeType")) { - this->mimeType = mtype->GetString(); - } - if (!this->bufferView || this->mimeType.empty()) { - throw DeadlyImportError("GLTF2: ", getContextForErrorMessages(id, name), " does not have a URI, so it must have a valid bufferView and mimetype"); - } - - Ref<Buffer> buffer = this->bufferView->buffer; - - this->mDataLength = this->bufferView->byteLength; - // maybe this memcpy could be avoided if aiTexture does not delete[] pcData at destruction. - - this->mData.reset(new uint8_t[this->mDataLength]); - memcpy(this->mData.get(), buffer->GetPointer() + this->bufferView->byteOffset, this->mDataLength); - } else { - throw DeadlyImportError("GLTF2: ", getContextForErrorMessages(id, name), " should have either a URI of a bufferView and mimetype"); - } - } -} - -inline uint8_t *Image::StealData() { - mDataLength = 0; - return mData.release(); -} - -// Never take over the ownership of data whenever binary or not -inline void Image::SetData(uint8_t *data, size_t length, Asset &r) { - Ref<Buffer> b = r.GetBodyBuffer(); - if (b) { // binary file: append to body - std::string bvId = r.FindUniqueID(this->id, "imgdata"); - bufferView = r.bufferViews.Create(bvId); - - bufferView->buffer = b; - bufferView->byteLength = length; - bufferView->byteOffset = b->AppendData(data, length); - } else { // text file: will be stored as a data uri - uint8_t *temp = new uint8_t[length]; - memcpy(temp, data, length); - this->mData.reset(temp); - this->mDataLength = length; - } -} - -inline void Sampler::Read(Value &obj, Asset & /*r*/) { - SetDefaults(); - - ReadMember(obj, "name", name); - ReadMember(obj, "magFilter", magFilter); - ReadMember(obj, "minFilter", minFilter); - ReadMember(obj, "wrapS", wrapS); - ReadMember(obj, "wrapT", wrapT); -} - -inline void Sampler::SetDefaults() { - //only wrapping modes have defaults - wrapS = SamplerWrap::Repeat; - wrapT = SamplerWrap::Repeat; - magFilter = SamplerMagFilter::UNSET; - minFilter = SamplerMinFilter::UNSET; -} - -inline void Texture::Read(Value &obj, Asset &r) { - if (Value *sourceVal = FindUInt(obj, "source")) { - source = r.images.Retrieve(sourceVal->GetUint()); - } - - if (Value *samplerVal = FindUInt(obj, "sampler")) { - sampler = r.samplers.Retrieve(samplerVal->GetUint()); - } -} - -void Material::SetTextureProperties(Asset &r, Value *prop, TextureInfo &out) { - if (r.extensionsUsed.KHR_texture_transform) { - if (Value *pKHR_texture_transform = FindExtension(*prop, "KHR_texture_transform")) { - out.textureTransformSupported = true; - if (Value *array = FindArray(*pKHR_texture_transform, "offset")) { - out.TextureTransformExt_t.offset[0] = (*array)[0].GetFloat(); - out.TextureTransformExt_t.offset[1] = (*array)[1].GetFloat(); - } else { - out.TextureTransformExt_t.offset[0] = 0; - out.TextureTransformExt_t.offset[1] = 0; - } - - if (!ReadMember(*pKHR_texture_transform, "rotation", out.TextureTransformExt_t.rotation)) { - out.TextureTransformExt_t.rotation = 0; - } - - if (Value *array = FindArray(*pKHR_texture_transform, "scale")) { - out.TextureTransformExt_t.scale[0] = (*array)[0].GetFloat(); - out.TextureTransformExt_t.scale[1] = (*array)[1].GetFloat(); - } else { - out.TextureTransformExt_t.scale[0] = 1; - out.TextureTransformExt_t.scale[1] = 1; - } - } - } - - if (Value *indexProp = FindUInt(*prop, "index")) { - out.texture = r.textures.Retrieve(indexProp->GetUint()); - } - - if (Value *texcoord = FindUInt(*prop, "texCoord")) { - out.texCoord = texcoord->GetUint(); - } -} - -inline void Material::ReadTextureProperty(Asset &r, Value &vals, const char *propName, TextureInfo &out) { - if (Value *prop = FindMember(vals, propName)) { - SetTextureProperties(r, prop, out); - } -} - -inline void Material::ReadTextureProperty(Asset &r, Value &vals, const char *propName, NormalTextureInfo &out) { - if (Value *prop = FindMember(vals, propName)) { - SetTextureProperties(r, prop, out); - - if (Value *scale = FindNumber(*prop, "scale")) { - out.scale = static_cast<float>(scale->GetDouble()); - } - } -} - -inline void Material::ReadTextureProperty(Asset &r, Value &vals, const char *propName, OcclusionTextureInfo &out) { - if (Value *prop = FindMember(vals, propName)) { - SetTextureProperties(r, prop, out); - - if (Value *strength = FindNumber(*prop, "strength")) { - out.strength = static_cast<float>(strength->GetDouble()); - } - } -} - -inline void Material::Read(Value &material, Asset &r) { - SetDefaults(); - - if (Value *curPbrMetallicRoughness = FindObject(material, "pbrMetallicRoughness")) { - ReadMember(*curPbrMetallicRoughness, "baseColorFactor", this->pbrMetallicRoughness.baseColorFactor); - ReadTextureProperty(r, *curPbrMetallicRoughness, "baseColorTexture", this->pbrMetallicRoughness.baseColorTexture); - ReadTextureProperty(r, *curPbrMetallicRoughness, "metallicRoughnessTexture", this->pbrMetallicRoughness.metallicRoughnessTexture); - ReadMember(*curPbrMetallicRoughness, "metallicFactor", this->pbrMetallicRoughness.metallicFactor); - ReadMember(*curPbrMetallicRoughness, "roughnessFactor", this->pbrMetallicRoughness.roughnessFactor); - } - - ReadTextureProperty(r, material, "normalTexture", this->normalTexture); - ReadTextureProperty(r, material, "occlusionTexture", this->occlusionTexture); - ReadTextureProperty(r, material, "emissiveTexture", this->emissiveTexture); - ReadMember(material, "emissiveFactor", this->emissiveFactor); - - ReadMember(material, "doubleSided", this->doubleSided); - ReadMember(material, "alphaMode", this->alphaMode); - ReadMember(material, "alphaCutoff", this->alphaCutoff); - - if (Value *extensions = FindObject(material, "extensions")) { - if (r.extensionsUsed.KHR_materials_pbrSpecularGlossiness) { - if (Value *curPbrSpecularGlossiness = FindObject(*extensions, "KHR_materials_pbrSpecularGlossiness")) { - PbrSpecularGlossiness pbrSG; - - ReadMember(*curPbrSpecularGlossiness, "diffuseFactor", pbrSG.diffuseFactor); - ReadTextureProperty(r, *curPbrSpecularGlossiness, "diffuseTexture", pbrSG.diffuseTexture); - ReadTextureProperty(r, *curPbrSpecularGlossiness, "specularGlossinessTexture", pbrSG.specularGlossinessTexture); - ReadMember(*curPbrSpecularGlossiness, "specularFactor", pbrSG.specularFactor); - ReadMember(*curPbrSpecularGlossiness, "glossinessFactor", pbrSG.glossinessFactor); - - this->pbrSpecularGlossiness = Nullable<PbrSpecularGlossiness>(pbrSG); - } - } - - // Extension KHR_texture_transform is handled in ReadTextureProperty - - if (r.extensionsUsed.KHR_materials_sheen) { - if (Value *curMaterialSheen = FindObject(*extensions, "KHR_materials_sheen")) { - MaterialSheen sheen; - - ReadMember(*curMaterialSheen, "sheenColorFactor", sheen.sheenColorFactor); - ReadTextureProperty(r, *curMaterialSheen, "sheenColorTexture", sheen.sheenColorTexture); - ReadMember(*curMaterialSheen, "sheenRoughnessFactor", sheen.sheenRoughnessFactor); - ReadTextureProperty(r, *curMaterialSheen, "sheenRoughnessTexture", sheen.sheenRoughnessTexture); - - this->materialSheen = Nullable<MaterialSheen>(sheen); - } - } - - if (r.extensionsUsed.KHR_materials_clearcoat) { - if (Value *curMaterialClearcoat = FindObject(*extensions, "KHR_materials_clearcoat")) { - MaterialClearcoat clearcoat; - - ReadMember(*curMaterialClearcoat, "clearcoatFactor", clearcoat.clearcoatFactor); - ReadTextureProperty(r, *curMaterialClearcoat, "clearcoatTexture", clearcoat.clearcoatTexture); - ReadMember(*curMaterialClearcoat, "clearcoatRoughnessFactor", clearcoat.clearcoatRoughnessFactor); - ReadTextureProperty(r, *curMaterialClearcoat, "clearcoatRoughnessTexture", clearcoat.clearcoatRoughnessTexture); - ReadTextureProperty(r, *curMaterialClearcoat, "clearcoatNormalTexture", clearcoat.clearcoatNormalTexture); - - this->materialClearcoat = Nullable<MaterialClearcoat>(clearcoat); - } - } - - if (r.extensionsUsed.KHR_materials_transmission) { - if (Value *curMaterialTransmission = FindObject(*extensions, "KHR_materials_transmission")) { - MaterialTransmission transmission; - - ReadMember(*curMaterialTransmission, "transmissionFactor", transmission.transmissionFactor); - ReadTextureProperty(r, *curMaterialTransmission, "transmissionTexture", transmission.transmissionTexture); - - this->materialTransmission = Nullable<MaterialTransmission>(transmission); - } - } - - if (r.extensionsUsed.KHR_materials_volume) { - if (Value *curMaterialVolume = FindObject(*extensions, "KHR_materials_volume")) { - MaterialVolume volume; - - ReadMember(*curMaterialVolume, "thicknessFactor", volume.thicknessFactor); - ReadTextureProperty(r, *curMaterialVolume, "thicknessTexture", volume.thicknessTexture); - ReadMember(*curMaterialVolume, "attenuationDistance", volume.attenuationDistance); - ReadMember(*curMaterialVolume, "attenuationColor", volume.attenuationColor); - - this->materialVolume = Nullable<MaterialVolume>(volume); - } - } - - if (r.extensionsUsed.KHR_materials_ior) { - if (Value *curMaterialIOR = FindObject(*extensions, "KHR_materials_ior")) { - MaterialIOR ior; - - ReadMember(*curMaterialIOR, "ior", ior.ior); - - this->materialIOR = Nullable<MaterialIOR>(ior); - } - } - - unlit = nullptr != FindObject(*extensions, "KHR_materials_unlit"); - } -} - -inline void Material::SetDefaults() { - //pbr materials - SetVector(pbrMetallicRoughness.baseColorFactor, defaultBaseColor); - pbrMetallicRoughness.metallicFactor = 1.0f; - pbrMetallicRoughness.roughnessFactor = 1.0f; - - SetVector(emissiveFactor, defaultEmissiveFactor); - alphaMode = "OPAQUE"; - alphaCutoff = 0.5f; - doubleSided = false; - unlit = false; -} - -inline void PbrSpecularGlossiness::SetDefaults() { - //pbrSpecularGlossiness properties - SetVector(diffuseFactor, defaultDiffuseFactor); - SetVector(specularFactor, defaultSpecularFactor); - glossinessFactor = 1.0f; -} - -inline void MaterialSheen::SetDefaults() { - //KHR_materials_sheen properties - SetVector(sheenColorFactor, defaultSheenFactor); - sheenRoughnessFactor = 0.f; -} - -inline void MaterialVolume::SetDefaults() { - //KHR_materials_volume properties - thicknessFactor = 0.f; - attenuationDistance = INFINITY; - SetVector(attenuationColor, defaultAttenuationColor); -} - -inline void MaterialIOR::SetDefaults() { - //KHR_materials_ior properties - ior = 1.5f; -} - -inline void Mesh::Read(Value &pJSON_Object, Asset &pAsset_Root) { - Value *curName = FindMember(pJSON_Object, "name"); - if (nullptr != curName && curName->IsString()) { - name = curName->GetString(); - } - - /****************** Mesh primitives ******************/ - Value *curPrimitives = FindArray(pJSON_Object, "primitives"); - if (nullptr != curPrimitives) { - this->primitives.resize(curPrimitives->Size()); - for (unsigned int i = 0; i < curPrimitives->Size(); ++i) { - Value &primitive = (*curPrimitives)[i]; - - Primitive &prim = this->primitives[i]; - prim.mode = MemberOrDefault(primitive, "mode", PrimitiveMode_TRIANGLES); - - if (Value *indices = FindUInt(primitive, "indices")) { - prim.indices = pAsset_Root.accessors.Retrieve(indices->GetUint()); - } - - if (Value *material = FindUInt(primitive, "material")) { - prim.material = pAsset_Root.materials.Retrieve(material->GetUint()); - } - - if (Value *attrs = FindObject(primitive, "attributes")) { - for (Value::MemberIterator it = attrs->MemberBegin(); it != attrs->MemberEnd(); ++it) { - if (!it->value.IsUint()) continue; - const char *attr = it->name.GetString(); - // Valid attribute semantics include POSITION, NORMAL, TANGENT, TEXCOORD, COLOR, JOINT, JOINTMATRIX, - // and WEIGHT.Attribute semantics can be of the form[semantic]_[set_index], e.g., TEXCOORD_0, TEXCOORD_1, etc. - - int undPos = 0; - Mesh::AccessorList *vec = nullptr; - if (GetAttribVector(prim, attr, vec, undPos)) { - size_t idx = (attr[undPos] == '_') ? atoi(attr + undPos + 1) : 0; - if ((*vec).size() != idx) { - throw DeadlyImportError("GLTF: Invalid attribute in mesh: ", name, " primitive: ", i, "attrib: ", attr, - ". All indices for indexed attribute semantics must start with 0 and be continuous positive integers: TEXCOORD_0, TEXCOORD_1, etc."); - } - (*vec).resize(idx + 1); - (*vec)[idx] = pAsset_Root.accessors.Retrieve(it->value.GetUint()); - } - } - } - -#ifdef ASSIMP_ENABLE_DRACO - // KHR_draco_mesh_compression spec: Draco can only be used for glTF Triangles or Triangle Strips - if (pAsset_Root.extensionsUsed.KHR_draco_mesh_compression && (prim.mode == PrimitiveMode_TRIANGLES || prim.mode == PrimitiveMode_TRIANGLE_STRIP)) { - // Look for draco mesh compression extension and bufferView - // Skip if any missing - if (Value *dracoExt = FindExtension(primitive, "KHR_draco_mesh_compression")) { - if (Value *bufView = FindUInt(*dracoExt, "bufferView")) { - // Attempt to load indices and attributes using draco compression - auto bufferView = pAsset_Root.bufferViews.Retrieve(bufView->GetUint()); - // Attempt to perform the draco decode on the buffer data - const char *bufferViewData = reinterpret_cast<const char *>(bufferView->buffer->GetPointer() + bufferView->byteOffset); - draco::DecoderBuffer decoderBuffer; - decoderBuffer.Init(bufferViewData, bufferView->byteLength); - draco::Decoder decoder; - auto decodeResult = decoder.DecodeMeshFromBuffer(&decoderBuffer); - if (!decodeResult.ok()) { - // A corrupt Draco isn't actually fatal if the primitive data is also provided in a standard buffer, but does anyone do that? - throw DeadlyImportError("GLTF: Invalid Draco mesh compression in mesh: ", name, " primitive: ", i, ": ", decodeResult.status().error_msg_string()); - } - - // Now we have a draco mesh - const std::unique_ptr<draco::Mesh> &pDracoMesh = decodeResult.value(); - - // Redirect the accessors to the decoded data - - // Indices - SetDecodedIndexBuffer_Draco(*pDracoMesh, prim); - - // Vertex attributes - if (Value *attrs = FindObject(*dracoExt, "attributes")) { - for (Value::MemberIterator it = attrs->MemberBegin(); it != attrs->MemberEnd(); ++it) { - if (!it->value.IsUint()) continue; - const char *attr = it->name.GetString(); - - int undPos = 0; - Mesh::AccessorList *vec = nullptr; - if (GetAttribVector(prim, attr, vec, undPos)) { - size_t idx = (attr[undPos] == '_') ? atoi(attr + undPos + 1) : 0; - if (idx >= (*vec).size()) { - throw DeadlyImportError("GLTF: Invalid draco attribute in mesh: ", name, " primitive: ", i, " attrib: ", attr, - ". All indices for indexed attribute semantics must start with 0 and be continuous positive integers: TEXCOORD_0, TEXCOORD_1, etc."); - } - - if (!(*vec)[idx]) { - throw DeadlyImportError("GLTF: Invalid draco attribute in mesh: ", name, " primitive: ", i, " attrib: ", attr, - ". All draco-encoded attributes must also define an accessor."); - } - - Accessor &attribAccessor = *(*vec)[idx]; - if (attribAccessor.count == 0) - throw DeadlyImportError("GLTF: Invalid draco attribute in mesh: ", name, " primitive: ", i, " attrib: ", attr); - - // Redirect this accessor to the appropriate Draco vertex attribute data - const uint32_t dracoAttribId = it->value.GetUint(); - SetDecodedAttributeBuffer_Draco(*pDracoMesh, dracoAttribId, attribAccessor); - } - } - } - } - } - } -#endif - - Value *targetsArray = FindArray(primitive, "targets"); - if (nullptr != targetsArray) { - prim.targets.resize(targetsArray->Size()); - for (unsigned int j = 0; j < targetsArray->Size(); ++j) { - Value &target = (*targetsArray)[j]; - if (!target.IsObject()) { - continue; - } - for (Value::MemberIterator it = target.MemberBegin(); it != target.MemberEnd(); ++it) { - if (!it->value.IsUint()) { - continue; - } - const char *attr = it->name.GetString(); - // Valid attribute semantics include POSITION, NORMAL, TANGENT - int undPos = 0; - Mesh::AccessorList *vec = nullptr; - if (GetAttribTargetVector(prim, j, attr, vec, undPos)) { - size_t idx = (attr[undPos] == '_') ? atoi(attr + undPos + 1) : 0; - if ((*vec).size() <= idx) { - (*vec).resize(idx + 1); - } - (*vec)[idx] = pAsset_Root.accessors.Retrieve(it->value.GetUint()); - } - } - } - } - } - } - - Value *curWeights = FindArray(pJSON_Object, "weights"); - if (nullptr != curWeights) { - this->weights.resize(curWeights->Size()); - for (unsigned int i = 0; i < curWeights->Size(); ++i) { - Value &weightValue = (*curWeights)[i]; - if (weightValue.IsNumber()) { - this->weights[i] = weightValue.GetFloat(); - } - } - } - - Value *curExtras = FindObject(pJSON_Object, "extras"); - if (nullptr != curExtras) { - if (Value *curTargetNames = FindArray(*curExtras, "targetNames")) { - this->targetNames.resize(curTargetNames->Size()); - for (unsigned int i = 0; i < curTargetNames->Size(); ++i) { - Value &targetNameValue = (*curTargetNames)[i]; - if (targetNameValue.IsString()) { - this->targetNames[i] = targetNameValue.GetString(); - } - } - } - } -} - -inline void Camera::Read(Value &obj, Asset & /*r*/) { - std::string type_string = std::string(MemberOrDefault(obj, "type", "perspective")); - if (type_string == "orthographic") { - type = Camera::Orthographic; - } else { - type = Camera::Perspective; - } - - const char *subobjId = (type == Camera::Orthographic) ? "orthographic" : "perspective"; - - Value *it = FindObject(obj, subobjId); - if (!it) throw DeadlyImportError("GLTF: Camera missing its parameters"); - - if (type == Camera::Perspective) { - cameraProperties.perspective.aspectRatio = MemberOrDefault(*it, "aspectRatio", 0.f); - cameraProperties.perspective.yfov = MemberOrDefault(*it, "yfov", 3.1415f / 2.f); - cameraProperties.perspective.zfar = MemberOrDefault(*it, "zfar", 100.f); - cameraProperties.perspective.znear = MemberOrDefault(*it, "znear", 0.01f); - } else { - cameraProperties.ortographic.xmag = MemberOrDefault(*it, "xmag", 1.f); - cameraProperties.ortographic.ymag = MemberOrDefault(*it, "ymag", 1.f); - cameraProperties.ortographic.zfar = MemberOrDefault(*it, "zfar", 100.f); - cameraProperties.ortographic.znear = MemberOrDefault(*it, "znear", 0.01f); - } -} - -inline void Light::Read(Value &obj, Asset & /*r*/) { -#ifndef M_PI - const float M_PI = 3.14159265358979323846f; -#endif - - std::string type_string; - ReadMember(obj, "type", type_string); - if (type_string == "directional") - type = Light::Directional; - else if (type_string == "point") - type = Light::Point; - else - type = Light::Spot; - - name = MemberOrDefault(obj, "name", ""); - - SetVector(color, vec3{ 1.0f, 1.0f, 1.0f }); - ReadMember(obj, "color", color); - - intensity = MemberOrDefault(obj, "intensity", 1.0f); - - ReadMember(obj, "range", range); - - if (type == Light::Spot) { - Value *spot = FindObject(obj, "spot"); - if (!spot) throw DeadlyImportError("GLTF: Light missing its spot parameters"); - innerConeAngle = MemberOrDefault(*spot, "innerConeAngle", 0.0f); - outerConeAngle = MemberOrDefault(*spot, "outerConeAngle", static_cast<float>(M_PI / 4.0f)); - } -} - -inline void Node::Read(Value &obj, Asset &r) { - if (name.empty()) { - name = id; - } - - Value *curChildren = FindArray(obj, "children"); - if (nullptr != curChildren) { - this->children.reserve(curChildren->Size()); - for (unsigned int i = 0; i < curChildren->Size(); ++i) { - Value &child = (*curChildren)[i]; - if (child.IsUint()) { - // get/create the child node - Ref<Node> chn = r.nodes.Retrieve(child.GetUint()); - if (chn) { - this->children.push_back(chn); - } - } - } - } - - Value *curMatrix = FindArray(obj, "matrix"); - if (nullptr != curMatrix) { - ReadValue(*curMatrix, this->matrix); - } else { - ReadMember(obj, "translation", translation); - ReadMember(obj, "scale", scale); - ReadMember(obj, "rotation", rotation); - } - - Value *curMesh = FindUInt(obj, "mesh"); - if (nullptr != curMesh) { - unsigned int numMeshes = 1; - this->meshes.reserve(numMeshes); - Ref<Mesh> meshRef = r.meshes.Retrieve((*curMesh).GetUint()); - if (meshRef) { - this->meshes.push_back(meshRef); - } - } - - // Do not retrieve a skin here, just take a reference, to avoid infinite recursion - // Skins will be properly loaded later - Value *curSkin = FindUInt(obj, "skin"); - if (nullptr != curSkin) { - this->skin = r.skins.Get(curSkin->GetUint()); - } - - Value *curCamera = FindUInt(obj, "camera"); - if (nullptr != curCamera) { - this->camera = r.cameras.Retrieve(curCamera->GetUint()); - if (this->camera) { - this->camera->id = this->id; - } - } - - Value *curExtensions = FindObject(obj, "extensions"); - if (nullptr != curExtensions) { - if (r.extensionsUsed.KHR_lights_punctual) { - if (Value *ext = FindObject(*curExtensions, "KHR_lights_punctual")) { - Value *curLight = FindUInt(*ext, "light"); - if (nullptr != curLight) { - this->light = r.lights.Retrieve(curLight->GetUint()); - if (this->light) { - this->light->id = this->id; - } - } - } - } - } -} - -inline void Scene::Read(Value &obj, Asset &r) { - if (Value *scene_name = FindString(obj, "name")) { - if (scene_name->IsString()) { - this->name = scene_name->GetString(); - } - } - if (Value *array = FindArray(obj, "nodes")) { - for (unsigned int i = 0; i < array->Size(); ++i) { - if (!(*array)[i].IsUint()) continue; - Ref<Node> node = r.nodes.Retrieve((*array)[i].GetUint()); - if (node) - this->nodes.push_back(node); - } - } -} - -inline void Skin::Read(Value &obj, Asset &r) { - if (Value *matrices = FindUInt(obj, "inverseBindMatrices")) { - inverseBindMatrices = r.accessors.Retrieve(matrices->GetUint()); - } - - if (Value *joints = FindArray(obj, "joints")) { - for (unsigned i = 0; i < joints->Size(); ++i) { - if (!(*joints)[i].IsUint()) continue; - Ref<Node> node = r.nodes.Retrieve((*joints)[i].GetUint()); - if (node) { - this->jointNames.push_back(node); - } - } - } -} - -inline void Animation::Read(Value &obj, Asset &r) { - Value *curSamplers = FindArray(obj, "samplers"); - if (nullptr != curSamplers) { - for (unsigned i = 0; i < curSamplers->Size(); ++i) { - Value &sampler = (*curSamplers)[i]; - - Sampler s; - if (Value *input = FindUInt(sampler, "input")) { - s.input = r.accessors.Retrieve(input->GetUint()); - } - if (Value *output = FindUInt(sampler, "output")) { - s.output = r.accessors.Retrieve(output->GetUint()); - } - s.interpolation = Interpolation_LINEAR; - if (Value *interpolation = FindString(sampler, "interpolation")) { - const std::string interp = interpolation->GetString(); - if (interp == "LINEAR") { - s.interpolation = Interpolation_LINEAR; - } else if (interp == "STEP") { - s.interpolation = Interpolation_STEP; - } else if (interp == "CUBICSPLINE") { - s.interpolation = Interpolation_CUBICSPLINE; - } - } - this->samplers.push_back(s); - } - } - - Value *curChannels = FindArray(obj, "channels"); - if (nullptr != curChannels) { - for (unsigned i = 0; i < curChannels->Size(); ++i) { - Value &channel = (*curChannels)[i]; - - Channel c; - Value *curSampler = FindUInt(channel, "sampler"); - if (nullptr != curSampler) { - c.sampler = curSampler->GetUint(); - } - - if (Value *target = FindObject(channel, "target")) { - if (Value *node = FindUInt(*target, "node")) { - c.target.node = r.nodes.Retrieve(node->GetUint()); - } - if (Value *path = FindString(*target, "path")) { - const std::string p = path->GetString(); - if (p == "translation") { - c.target.path = AnimationPath_TRANSLATION; - } else if (p == "rotation") { - c.target.path = AnimationPath_ROTATION; - } else if (p == "scale") { - c.target.path = AnimationPath_SCALE; - } else if (p == "weights") { - c.target.path = AnimationPath_WEIGHTS; - } - } - } - this->channels.push_back(c); - } - } -} - -inline void AssetMetadata::Read(Document &doc) { - if (Value *obj = FindObject(doc, "asset")) { - ReadMember(*obj, "copyright", copyright); - ReadMember(*obj, "generator", generator); - - if (Value *versionString = FindStringInContext(*obj, "version", "\"asset\"")) { - version = versionString->GetString(); - } - Value *curProfile = FindObjectInContext(*obj, "profile", "\"asset\""); - if (nullptr != curProfile) { - ReadMember(*curProfile, "api", this->profile.api); - ReadMember(*curProfile, "version", this->profile.version); - } - } - - if (version.empty() || version[0] != '2') { - throw DeadlyImportError("GLTF: Unsupported glTF version: ", version); - } -} - -// -// Asset methods implementation -// - -inline void Asset::ReadBinaryHeader(IOStream &stream, std::vector<char> &sceneData) { - ASSIMP_LOG_DEBUG("Reading GLTF2 binary"); - GLB_Header header; - if (stream.Read(&header, sizeof(header), 1) != 1) { - throw DeadlyImportError("GLTF: Unable to read the file header"); - } - - if (strncmp((char *)header.magic, AI_GLB_MAGIC_NUMBER, sizeof(header.magic)) != 0) { - throw DeadlyImportError("GLTF: Invalid binary glTF file"); - } - - AI_SWAP4(header.version); - asset.version = ai_to_string(header.version); - if (header.version != 2) { - throw DeadlyImportError("GLTF: Unsupported binary glTF version"); - } - - GLB_Chunk chunk; - if (stream.Read(&chunk, sizeof(chunk), 1) != 1) { - throw DeadlyImportError("GLTF: Unable to read JSON chunk"); - } - - AI_SWAP4(chunk.chunkLength); - AI_SWAP4(chunk.chunkType); - - if (chunk.chunkType != ChunkType_JSON) { - throw DeadlyImportError("GLTF: JSON chunk missing"); - } - - // read the scene data, ensure null termination - static_assert(std::numeric_limits<uint32_t>::max() <= std::numeric_limits<size_t>::max(), "size_t must be at least 32bits"); - mSceneLength = chunk.chunkLength; // Can't be larger than 4GB (max. uint32_t) - sceneData.resize(mSceneLength + 1); - sceneData[mSceneLength] = '\0'; - - if (stream.Read(&sceneData[0], 1, mSceneLength) != mSceneLength) { - throw DeadlyImportError("GLTF: Could not read the file contents"); - } - - uint32_t padding = ((chunk.chunkLength + 3) & ~3) - chunk.chunkLength; - if (padding > 0) { - stream.Seek(padding, aiOrigin_CUR); - } - - AI_SWAP4(header.length); - mBodyOffset = 12 + 8 + chunk.chunkLength + padding + 8; - if (header.length >= mBodyOffset) { - if (stream.Read(&chunk, sizeof(chunk), 1) != 1) { - throw DeadlyImportError("GLTF: Unable to read BIN chunk"); - } - - AI_SWAP4(chunk.chunkLength); - AI_SWAP4(chunk.chunkType); - - if (chunk.chunkType != ChunkType_BIN) { - throw DeadlyImportError("GLTF: BIN chunk missing"); - } - - mBodyLength = chunk.chunkLength; - } else { - mBodyOffset = mBodyLength = 0; - } -} - -inline rapidjson::Document Asset::ReadDocument(IOStream &stream, bool isBinary, std::vector<char> &sceneData) { - ASSIMP_LOG_DEBUG("Loading GLTF2 asset"); - - // is binary? then read the header - if (isBinary) { - SetAsBinary(); // also creates the body buffer - ReadBinaryHeader(stream, sceneData); - } else { - mSceneLength = stream.FileSize(); - mBodyLength = 0; - - // Binary format only supports up to 4GB of JSON, use that as a maximum - if (mSceneLength >= std::numeric_limits<uint32_t>::max()) { - throw DeadlyImportError("GLTF: JSON size greater than 4GB"); - } - - // read the scene data, ensure null termination - sceneData.resize(mSceneLength + 1); - sceneData[mSceneLength] = '\0'; - - if (stream.Read(&sceneData[0], 1, mSceneLength) != mSceneLength) { - throw DeadlyImportError("GLTF: Could not read the file contents"); - } - } - - // Smallest legal JSON file is "{}" Smallest loadable glTF file is larger than that but catch it later - if (mSceneLength < 2) { - throw DeadlyImportError("GLTF: No JSON file contents"); - } - - // parse the JSON document - ASSIMP_LOG_DEBUG("Parsing GLTF2 JSON"); - Document doc; - doc.ParseInsitu(&sceneData[0]); - - if (doc.HasParseError()) { - char buffer[32]; - ai_snprintf(buffer, 32, "%d", static_cast<int>(doc.GetErrorOffset())); - throw DeadlyImportError("GLTF: JSON parse error, offset ", buffer, ": ", GetParseError_En(doc.GetParseError())); - } - - if (!doc.IsObject()) { - throw DeadlyImportError("GLTF: JSON document root must be a JSON object"); - } - - return doc; -} - -inline void Asset::Load(const std::string &pFile, bool isBinary) -{ - mCurrentAssetDir.clear(); - if (0 != strncmp(pFile.c_str(), AI_MEMORYIO_MAGIC_FILENAME, AI_MEMORYIO_MAGIC_FILENAME_LENGTH)) { - mCurrentAssetDir = glTFCommon::getCurrentAssetDir(pFile); - } - - shared_ptr<IOStream> stream(OpenFile(pFile.c_str(), "rb", true)); - if (!stream) { - throw DeadlyImportError("GLTF: Could not open file for reading"); - } - - std::vector<char> sceneData; - rapidjson::Document doc = ReadDocument(*stream, isBinary, sceneData); - - // If a schemaDocumentProvider is available, see if the glTF schema is present. - // If so, use it to validate the document. - if (mSchemaDocumentProvider) { - if (const rapidjson::SchemaDocument *gltfSchema = mSchemaDocumentProvider->GetRemoteDocument("glTF.schema.json", 16)) { - // The schemas are found here: https://github.com/KhronosGroup/glTF/tree/main/specification/2.0/schema - rapidjson::SchemaValidator validator(*gltfSchema); - if (!doc.Accept(validator)) { - rapidjson::StringBuffer pathBuffer; - validator.GetInvalidSchemaPointer().StringifyUriFragment(pathBuffer); - rapidjson::StringBuffer argumentBuffer; - validator.GetInvalidDocumentPointer().StringifyUriFragment(argumentBuffer); - throw DeadlyImportError("GLTF: The JSON document did not satisfy the glTF2 schema. Schema keyword: ", validator.GetInvalidSchemaKeyword(), ", document path: ", pathBuffer.GetString(), ", argument: ", argumentBuffer.GetString()); - } - } - } - - // Fill the buffer instance for the current file embedded contents - if (mBodyLength > 0) { - if (!mBodyBuffer->LoadFromStream(*stream, mBodyLength, mBodyOffset)) { - throw DeadlyImportError("GLTF: Unable to read gltf file"); - } - } - - // Load the metadata - asset.Read(doc); - ReadExtensionsUsed(doc); - ReadExtensionsRequired(doc); - -#ifndef ASSIMP_ENABLE_DRACO - // Is Draco required? - if (extensionsRequired.KHR_draco_mesh_compression) { - throw DeadlyImportError("GLTF: Draco mesh compression not supported."); - } -#endif - - // Prepare the dictionaries - for (size_t i = 0; i < mDicts.size(); ++i) { - mDicts[i]->AttachToDocument(doc); - } - - // Read the "scene" property, which specifies which scene to load - // and recursively load everything referenced by it - unsigned int sceneIndex = 0; - Value *curScene = FindUInt(doc, "scene"); - if (nullptr != curScene) { - sceneIndex = curScene->GetUint(); - } - - if (Value *scenesArray = FindArray(doc, "scenes")) { - if (sceneIndex < scenesArray->Size()) { - this->scene = scenes.Retrieve(sceneIndex); - } - } - - if (Value *skinsArray = FindArray(doc, "skins")) { - for (unsigned int i = 0; i < skinsArray->Size(); ++i) { - skins.Retrieve(i); - } - } - - if (Value *animsArray = FindArray(doc, "animations")) { - for (unsigned int i = 0; i < animsArray->Size(); ++i) { - animations.Retrieve(i); - } - } - - // Clean up - for (size_t i = 0; i < mDicts.size(); ++i) { - mDicts[i]->DetachFromDocument(); - } -} - -inline bool Asset::CanRead(const std::string &pFile, bool isBinary) { - try { - shared_ptr<IOStream> stream(OpenFile(pFile.c_str(), "rb", true)); - if (!stream) { - return false; - } - std::vector<char> sceneData; - rapidjson::Document doc = ReadDocument(*stream, isBinary, sceneData); - asset.Read(doc); - } catch (...) { - return false; - } - return true; -} - -inline void Asset::SetAsBinary() { - if (!mBodyBuffer) { - mBodyBuffer = buffers.Create("binary_glTF"); - mBodyBuffer->MarkAsSpecial(); - } -} - -// As required extensions are only a concept in glTF 2.0, this is here -// instead of glTFCommon.h -#define CHECK_REQUIRED_EXT(EXT) \ - if (exts.find(#EXT) != exts.end()) extensionsRequired.EXT = true; - -inline void Asset::ReadExtensionsRequired(Document &doc) { - Value *extsRequired = FindArray(doc, "extensionsRequired"); - if (nullptr == extsRequired) { - return; - } - - std::gltf_unordered_map<std::string, bool> exts; - for (unsigned int i = 0; i < extsRequired->Size(); ++i) { - if ((*extsRequired)[i].IsString()) { - exts[(*extsRequired)[i].GetString()] = true; - } - } - - CHECK_REQUIRED_EXT(KHR_draco_mesh_compression); - -#undef CHECK_REQUIRED_EXT -} - -inline void Asset::ReadExtensionsUsed(Document &doc) { - Value *extsUsed = FindArray(doc, "extensionsUsed"); - if (!extsUsed) return; - - std::gltf_unordered_map<std::string, bool> exts; - - for (unsigned int i = 0; i < extsUsed->Size(); ++i) { - if ((*extsUsed)[i].IsString()) { - exts[(*extsUsed)[i].GetString()] = true; - } - } - - CHECK_EXT(KHR_materials_pbrSpecularGlossiness); - CHECK_EXT(KHR_materials_unlit); - CHECK_EXT(KHR_lights_punctual); - CHECK_EXT(KHR_texture_transform); - CHECK_EXT(KHR_materials_sheen); - CHECK_EXT(KHR_materials_clearcoat); - CHECK_EXT(KHR_materials_transmission); - CHECK_EXT(KHR_materials_volume); - CHECK_EXT(KHR_materials_ior); - CHECK_EXT(KHR_draco_mesh_compression); - CHECK_EXT(KHR_texture_basisu); - -#undef CHECK_EXT -} - -inline IOStream *Asset::OpenFile(const std::string &path, const char *mode, bool /*absolute*/) { -#ifdef ASSIMP_API - return mIOSystem->Open(path, mode); -#else - if (path.size() < 2) return nullptr; - if (!absolute && path[1] != ':' && path[0] != '/') { // relative? - path = mCurrentAssetDir + path; - } - FILE *f = fopen(path.c_str(), mode); - return f ? new IOStream(f) : nullptr; -#endif -} - -inline std::string Asset::FindUniqueID(const std::string &str, const char *suffix) { - std::string id = str; - - if (!id.empty()) { - if (mUsedIds.find(id) == mUsedIds.end()) - return id; - - id += "_"; - } - - id += suffix; - - Asset::IdMap::iterator it = mUsedIds.find(id); - if (it == mUsedIds.end()) { - return id; - } - - std::vector<char> buffer; - buffer.resize(id.size() + 16); - int offset = ai_snprintf(buffer.data(), buffer.size(), "%s_", id.c_str()); - for (int i = 0; it != mUsedIds.end(); ++i) { - ai_snprintf(buffer.data() + offset, buffer.size() - offset, "%d", i); - id = buffer.data(); - it = mUsedIds.find(id); - } - - return id; -} - -#if _MSC_VER -# pragma warning(pop) -#endif // _MSC_VER - -} // namespace glTF2 |