2 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include "dali-scene-loader/public-api/gltf2-loader.h"
19 #include "dali-scene-loader/internal/gltf2-asset.h"
20 #include "dali-scene-loader/public-api/load-result.h"
21 #include "dali-scene-loader/public-api/resource-bundle.h"
22 #include "dali-scene-loader/public-api/scene-definition.h"
23 #include "dali-scene-loader/public-api/shader-definition-factory.h"
24 #include "dali-scene-loader/public-api/utils.h"
25 #include "dali/public-api/math/quaternion.h"
27 #define ENUM_STRING_MAPPING(t, x) \
41 const std::string POSITION_PROPERTY("position");
42 const std::string ORIENTATION_PROPERTY("orientation");
43 const std::string SCALE_PROPERTY("scale");
44 const std::string BLEND_SHAPE_WEIGHTS_UNIFORM("uBlendShapeWeight");
46 const Geometry::Type GLTF2_TO_DALI_PRIMITIVES[]{
52 Geometry::TRIANGLE_STRIP,
53 Geometry::TRIANGLE_FAN}; //...because Dali swaps the last two.
55 struct AttributeMapping
57 gt::Attribute::Type mType;
58 MeshDefinition::Accessor MeshDefinition::*mAccessor;
59 uint16_t mElementSizeRequired;
60 } ATTRIBUTE_MAPPINGS[]{
61 {gt::Attribute::NORMAL, &MeshDefinition::mNormals, sizeof(Vector3)},
62 {gt::Attribute::TANGENT, &MeshDefinition::mTangents, sizeof(Vector3)},
63 {gt::Attribute::TEXCOORD_0, &MeshDefinition::mTexCoords, sizeof(Vector2)},
64 {gt::Attribute::JOINTS_0, &MeshDefinition::mJoints0, sizeof(Vector4)},
65 {gt::Attribute::WEIGHTS_0, &MeshDefinition::mWeights0, sizeof(Vector4)},
68 std::vector<gt::Animation> ReadAnimationArray(const json_value_s& j)
71 SetRefReaderObject(proxy);
73 auto results = js::Read::Array<gt::Animation, js::ObjectReader<gt::Animation>::Read>(j);
75 for(auto& animation : results)
77 for(auto& channel : animation.mChannels)
79 channel.mSampler.UpdateVector(animation.mSamplers);
86 void ApplyAccessorMinMax(const gt::Accessor& acc, float* values)
88 DALI_ASSERT_ALWAYS(acc.mMax.empty() || gt::AccessorType::ElementCount(acc.mType) == acc.mMax.size());
89 DALI_ASSERT_ALWAYS(acc.mMin.empty() || gt::AccessorType::ElementCount(acc.mType) == acc.mMin.size());
90 MeshDefinition::Blob::ApplyMinMax(acc.mMin, acc.mMax, acc.mCount, values);
93 const auto BUFFER_READER = std::move(js::Reader<gt::Buffer>()
94 .Register(*js::MakeProperty("byteLength", js::Read::Number<uint32_t>, >::Buffer::mByteLength))
95 .Register(*js::MakeProperty("uri", js::Read::StringView, >::Buffer::mUri)));
97 const auto BUFFER_VIEW_READER = std::move(js::Reader<gt::BufferView>()
98 .Register(*js::MakeProperty("buffer", gt::RefReader<gt::Document>::Read<gt::Buffer, >::Document::mBuffers>, >::BufferView::mBuffer))
99 .Register(*js::MakeProperty("byteOffset", js::Read::Number<uint32_t>, >::BufferView::mByteOffset))
100 .Register(*js::MakeProperty("byteLength", js::Read::Number<uint32_t>, >::BufferView::mByteLength))
101 .Register(*js::MakeProperty("byteStride", js::Read::Number<uint32_t>, >::BufferView::mByteStride))
102 .Register(*js::MakeProperty("target", js::Read::Number<uint32_t>, >::BufferView::mTarget)));
104 const auto BUFFER_VIEW_CLIENT_READER = std::move(js::Reader<gt::BufferViewClient>()
105 .Register(*js::MakeProperty("bufferView", gt::RefReader<gt::Document>::Read<gt::BufferView, >::Document::mBufferViews>, >::BufferViewClient::mBufferView))
106 .Register(*js::MakeProperty("byteOffset", js::Read::Number<uint32_t>, >::BufferViewClient::mByteOffset)));
108 const auto COMPONENT_TYPED_BUFFER_VIEW_CLIENT_READER = std::move(js::Reader<gt::ComponentTypedBufferViewClient>()
109 .Register(*new js::Property<gt::ComponentTypedBufferViewClient, gt::Ref<gt::BufferView>>("bufferView", gt::RefReader<gt::Document>::Read<gt::BufferView, >::Document::mBufferViews>, >::ComponentTypedBufferViewClient::mBufferView))
110 .Register(*new js::Property<gt::ComponentTypedBufferViewClient, uint32_t>("byteOffset", js::Read::Number<uint32_t>, >::ComponentTypedBufferViewClient::mByteOffset))
111 .Register(*js::MakeProperty("componentType", js::Read::Enum<gt::Component::Type>, >::ComponentTypedBufferViewClient::mComponentType)));
113 const auto ACCESSOR_SPARSE_READER = std::move(js::Reader<gt::Accessor::Sparse>()
114 .Register(*js::MakeProperty("count", js::Read::Number<uint32_t>, >::Accessor::Sparse::mCount))
115 .Register(*js::MakeProperty("indices", js::ObjectReader<gt::ComponentTypedBufferViewClient>::Read, >::Accessor::Sparse::mIndices))
116 .Register(*js::MakeProperty("values", js::ObjectReader<gt::BufferViewClient>::Read, >::Accessor::Sparse::mValues)));
118 const auto ACCESSOR_READER = std::move(js::Reader<gt::Accessor>()
119 .Register(*new js::Property<gt::Accessor, gt::Ref<gt::BufferView>>("bufferView",
120 gt::RefReader<gt::Document>::Read<gt::BufferView, >::Document::mBufferViews>,
121 >::Accessor::mBufferView))
122 .Register(*new js::Property<gt::Accessor, uint32_t>("byteOffset",
123 js::Read::Number<uint32_t>,
124 >::Accessor::mByteOffset))
125 .Register(*new js::Property<gt::Accessor, gt::Component::Type>("componentType",
126 js::Read::Enum<gt::Component::Type>,
127 >::Accessor::mComponentType))
128 .Register(*new js::Property<gt::Accessor, std::string_view>("name", js::Read::StringView, >::Accessor::mName))
129 .Register(*js::MakeProperty("count", js::Read::Number<uint32_t>, >::Accessor::mCount))
130 .Register(*js::MakeProperty("normalized", js::Read::Boolean, >::Accessor::mNormalized))
131 .Register(*js::MakeProperty("type", gt::ReadStringEnum<gt::AccessorType>, >::Accessor::mType))
132 .Register(*js::MakeProperty("min", js::Read::Array<float, js::Read::Number>, >::Accessor::mMin))
133 .Register(*js::MakeProperty("max", js::Read::Array<float, js::Read::Number>, >::Accessor::mMax))
134 .Register(*new js::Property<gt::Accessor, gt::Accessor::Sparse>("sparse", js::ObjectReader<gt::Accessor::Sparse>::Read, >::Accessor::SetSparse)));
136 const auto IMAGE_READER = std::move(js::Reader<gt::Image>()
137 .Register(*new js::Property<gt::Image, std::string_view>("name", js::Read::StringView, >::Material::mName))
138 .Register(*js::MakeProperty("uri", js::Read::StringView, >::Image::mUri))
139 .Register(*js::MakeProperty("mimeType", js::Read::StringView, >::Image::mMimeType))
140 .Register(*js::MakeProperty("bufferView", gt::RefReader<gt::Document>::Read<gt::BufferView, >::Document::mBufferViews>, >::Image::mBufferView)));
142 const auto SAMPLER_READER = std::move(js::Reader<gt::Sampler>()
143 .Register(*js::MakeProperty("minFilter", js::Read::Enum<gt::Filter::Type>, >::Sampler::mMinFilter))
144 .Register(*js::MakeProperty("magFilter", js::Read::Enum<gt::Filter::Type>, >::Sampler::mMagFilter))
145 .Register(*js::MakeProperty("wrapS", js::Read::Enum<gt::Wrap::Type>, >::Sampler::mWrapS))
146 .Register(*js::MakeProperty("wrapT", js::Read::Enum<gt::Wrap::Type>, >::Sampler::mWrapT)));
148 const auto TEXURE_READER = std::move(js::Reader<gt::Texture>()
149 .Register(*js::MakeProperty("source", gt::RefReader<gt::Document>::Read<gt::Image, >::Document::mImages>, >::Texture::mSource))
150 .Register(*js::MakeProperty("sampler", gt::RefReader<gt::Document>::Read<gt::Sampler, >::Document::mSamplers>, >::Texture::mSampler)));
152 const auto TEXURE_INFO_READER = std::move(js::Reader<gt::TextureInfo>()
153 .Register(*js::MakeProperty("index", gt::RefReader<gt::Document>::Read<gt::Texture, >::Document::mTextures>, >::TextureInfo::mTexture))
154 .Register(*js::MakeProperty("texCoord", js::Read::Number<uint32_t>, >::TextureInfo::mTexCoord))
155 .Register(*js::MakeProperty("scale", js::Read::Number<float>, >::TextureInfo::mScale)));
157 const auto MATERIAL_PBR_READER = std::move(js::Reader<gt::Material::Pbr>()
158 .Register(*js::MakeProperty("baseColorFactor", gt::ReadDaliVector<Vector4>, >::Material::Pbr::mBaseColorFactor))
159 .Register(*js::MakeProperty("baseColorTexture", js::ObjectReader<gt::TextureInfo>::Read, >::Material::Pbr::mBaseColorTexture))
160 .Register(*js::MakeProperty("metallicFactor", js::Read::Number<float>, >::Material::Pbr::mMetallicFactor))
161 .Register(*js::MakeProperty("roughnessFactor", js::Read::Number<float>, >::Material::Pbr::mRoughnessFactor))
162 .Register(*js::MakeProperty("metallicRoughnessTexture", js::ObjectReader<gt::TextureInfo>::Read, >::Material::Pbr::mMetallicRoughnessTexture)));
164 const auto MATERIAL_READER = std::move(js::Reader<gt::Material>()
165 .Register(*new js::Property<gt::Material, std::string_view>("name", js::Read::StringView, >::Material::mName))
166 .Register(*js::MakeProperty("pbrMetallicRoughness", js::ObjectReader<gt::Material::Pbr>::Read, >::Material::mPbrMetallicRoughness))
167 .Register(*js::MakeProperty("normalTexture", js::ObjectReader<gt::TextureInfo>::Read, >::Material::mNormalTexture))
168 .Register(*js::MakeProperty("occlusionTexture", js::ObjectReader<gt::TextureInfo>::Read, >::Material::mOcclusionTexture))
169 .Register(*js::MakeProperty("emissiveTexture", js::ObjectReader<gt::TextureInfo>::Read, >::Material::mEmissiveTexture))
170 .Register(*js::MakeProperty("emissiveFactor", gt::ReadDaliVector<Vector3>, >::Material::mEmissiveFactor))
171 .Register(*js::MakeProperty("alphaMode", gt::ReadStringEnum<gt::AlphaMode>, >::Material::mAlphaMode))
172 .Register(*js::MakeProperty("alphaCutoff", js::Read::Number<float>, >::Material::mAlphaCutoff)));
174 std::map<gt::Attribute::Type, gt::Ref<gt::Accessor>> ReadMeshPrimitiveAttributes(const json_value_s& j)
176 auto& jo = js::Cast<json_object_s>(j);
177 std::map<gt::Attribute::Type, gt::Ref<gt::Accessor>> result;
182 auto jstr = *i->name;
183 result[gt::Attribute::FromString(jstr.string, jstr.string_size)] = gt::RefReader<gt::Document>::Read<gt::Accessor, >::Document::mAccessors>(*i->value);
189 std::vector<std::map<gt::Attribute::Type, gt::Ref<gt::Accessor>>> ReadMeshPrimitiveTargets(const json_value_s& j)
191 auto& jo = js::Cast<json_array_s>(j);
192 std::vector<std::map<gt::Attribute::Type, gt::Ref<gt::Accessor>>> result;
194 result.reserve(jo.length);
199 result.push_back(std::move(ReadMeshPrimitiveAttributes(*i->value)));
206 const auto MESH_PRIMITIVE_READER = std::move(js::Reader<gt::Mesh::Primitive>()
207 .Register(*js::MakeProperty("attributes", ReadMeshPrimitiveAttributes, >::Mesh::Primitive::mAttributes))
208 .Register(*js::MakeProperty("indices", gt::RefReader<gt::Document>::Read<gt::Accessor, >::Document::mAccessors>, >::Mesh::Primitive::mIndices))
209 .Register(*js::MakeProperty("material", gt::RefReader<gt::Document>::Read<gt::Material, >::Document::mMaterials>, >::Mesh::Primitive::mMaterial))
210 .Register(*js::MakeProperty("mode", js::Read::Enum<gt::Mesh::Primitive::Mode>, >::Mesh::Primitive::mMode))
211 .Register(*js::MakeProperty("targets", ReadMeshPrimitiveTargets, >::Mesh::Primitive::mTargets)));
213 const auto MESH_READER = std::move(js::Reader<gt::Mesh>()
214 .Register(*new js::Property<gt::Mesh, std::string_view>("name", js::Read::StringView, >::Mesh::mName))
215 .Register(*js::MakeProperty("primitives",
216 js::Read::Array<gt::Mesh::Primitive, js::ObjectReader<gt::Mesh::Primitive>::Read>,
217 >::Mesh::mPrimitives))
218 .Register(*js::MakeProperty("weights", js::Read::Array<float, js::Read::Number>, >::Mesh::mWeights)));
220 const auto SKIN_READER = std::move(js::Reader<gt::Skin>()
221 .Register(*new js::Property<gt::Skin, std::string_view>("name", js::Read::StringView, >::Skin::mName))
222 .Register(*js::MakeProperty("inverseBindMatrices",
223 gt::RefReader<gt::Document>::Read<gt::Accessor, >::Document::mAccessors>,
224 >::Skin::mInverseBindMatrices))
225 .Register(*js::MakeProperty("skeleton",
226 gt::RefReader<gt::Document>::Read<gt::Node, >::Document::mNodes>,
227 >::Skin::mSkeleton))
228 .Register(*js::MakeProperty("joints",
229 js::Read::Array<gt::Ref<gt::Node>, gt::RefReader<gt::Document>::Read<gt::Node, >::Document::mNodes>>,
230 >::Skin::mJoints)));
232 const auto CAMERA_PERSPECTIVE_READER = std::move(js::Reader<gt::Camera::Perspective>()
233 .Register(*js::MakeProperty("aspectRatio", js::Read::Number<float>, >::Camera::Perspective::mAspectRatio))
234 .Register(*js::MakeProperty("yfov", js::Read::Number<float>, >::Camera::Perspective::mYFov))
235 .Register(*js::MakeProperty("zfar", js::Read::Number<float>, >::Camera::Perspective::mZFar))
236 .Register(*js::MakeProperty("znear", js::Read::Number<float>, >::Camera::Perspective::mZNear))); // TODO: infinite perspective projection, where znear is omitted
238 const auto CAMERA_ORTHOGRAPHIC_READER = std::move(js::Reader<gt::Camera::Orthographic>()
239 .Register(*js::MakeProperty("xmag", js::Read::Number<float>, >::Camera::Orthographic::mXMag))
240 .Register(*js::MakeProperty("ymag", js::Read::Number<float>, >::Camera::Orthographic::mXMag))
241 .Register(*js::MakeProperty("zfar", js::Read::Number<float>, >::Camera::Orthographic::mZFar))
242 .Register(*js::MakeProperty("znear", js::Read::Number<float>, >::Camera::Orthographic::mZNear)));
244 const auto CAMERA_READER = std::move(js::Reader<gt::Camera>()
245 .Register(*new js::Property<gt::Camera, std::string_view>("name", js::Read::StringView, >::Camera::mName))
246 .Register(*js::MakeProperty("type", js::Read::StringView, >::Camera::mType))
247 .Register(*js::MakeProperty("perspective", js::ObjectReader<gt::Camera::Perspective>::Read, >::Camera::mPerspective))
248 .Register(*js::MakeProperty("orthographic", js::ObjectReader<gt::Camera::Orthographic>::Read, >::Camera::mOrthographic)));
250 const auto NODE_READER = std::move(js::Reader<gt::Node>()
251 .Register(*new js::Property<gt::Node, std::string_view>("name", js::Read::StringView, >::Node::mName))
252 .Register(*js::MakeProperty("translation", gt::ReadDaliVector<Vector3>, >::Node::mTranslation))
253 .Register(*js::MakeProperty("rotation", gt::ReadQuaternion, >::Node::mRotation))
254 .Register(*js::MakeProperty("scale", gt::ReadDaliVector<Vector3>, >::Node::mScale))
255 .Register(*new js::Property<gt::Node, Matrix>("matrix", gt::ReadDaliVector<Matrix>, >::Node::SetMatrix))
256 .Register(*js::MakeProperty("camera", gt::RefReader<gt::Document>::Read<gt::Camera, >::Document::mCameras>, >::Node::mCamera))
257 .Register(*js::MakeProperty("children", js::Read::Array<gt::Ref<gt::Node>, gt::RefReader<gt::Document>::Read<gt::Node, >::Document::mNodes>>, >::Node::mChildren))
258 .Register(*js::MakeProperty("mesh", gt::RefReader<gt::Document>::Read<gt::Mesh, >::Document::mMeshes>, >::Node::mMesh))
259 .Register(*js::MakeProperty("skin", gt::RefReader<gt::Document>::Read<gt::Skin, >::Document::mSkins>, >::Node::mSkin)));
261 const auto ANIMATION_SAMPLER_READER = std::move(js::Reader<gt::Animation::Sampler>()
262 .Register(*js::MakeProperty("input", gt::RefReader<gt::Document>::Read<gt::Accessor, >::Document::mAccessors>, >::Animation::Sampler::mInput))
263 .Register(*js::MakeProperty("output", gt::RefReader<gt::Document>::Read<gt::Accessor, >::Document::mAccessors>, >::Animation::Sampler::mOutput))
264 .Register(*js::MakeProperty("interpolation", gt::ReadStringEnum<gt::Animation::Sampler::Interpolation>, >::Animation::Sampler::mInterpolation)));
266 const auto ANIMATION_TARGET_READER = std::move(js::Reader<gt::Animation::Channel::Target>()
267 .Register(*js::MakeProperty("node", gt::RefReader<gt::Document>::Read<gt::Node, >::Document::mNodes>, >::Animation::Channel::Target::mNode))
268 .Register(*js::MakeProperty("path", gt::ReadStringEnum<gt::Animation::Channel::Target>, >::Animation::Channel::Target::mPath)));
270 const auto ANIMATION_CHANNEL_READER = std::move(js::Reader<gt::Animation::Channel>()
271 .Register(*js::MakeProperty("target", js::ObjectReader<gt::Animation::Channel::Target>::Read, >::Animation::Channel::mTarget))
272 .Register(*js::MakeProperty("sampler", gt::RefReader<gt::Animation>::Read<gt::Animation::Sampler, >::Animation::mSamplers>, >::Animation::Channel::mSampler)));
274 const auto ANIMATION_READER = std::move(js::Reader<gt::Animation>()
275 .Register(*new js::Property<gt::Animation, std::string_view>("name", js::Read::StringView, >::Animation::mName))
276 .Register(*js::MakeProperty("samplers",
277 js::Read::Array<gt::Animation::Sampler, js::ObjectReader<gt::Animation::Sampler>::Read>,
278 >::Animation::mSamplers))
279 .Register(*js::MakeProperty("channels",
280 js::Read::Array<gt::Animation::Channel, js::ObjectReader<gt::Animation::Channel>::Read>,
281 >::Animation::mChannels)));
283 const auto SCENE_READER = std::move(js::Reader<gt::Scene>()
284 .Register(*new js::Property<gt::Scene, std::string_view>("name", js::Read::StringView, >::Scene::mName))
285 .Register(*js::MakeProperty("nodes",
286 js::Read::Array<gt::Ref<gt::Node>, gt::RefReader<gt::Document>::Read<gt::Node, >::Document::mNodes>>,
287 >::Scene::mNodes)));
289 const auto DOCUMENT_READER = std::move(js::Reader<gt::Document>()
290 .Register(*js::MakeProperty("buffers",
291 js::Read::Array<gt::Buffer, js::ObjectReader<gt::Buffer>::Read>,
292 >::Document::mBuffers))
293 .Register(*js::MakeProperty("bufferViews",
294 js::Read::Array<gt::BufferView, js::ObjectReader<gt::BufferView>::Read>,
295 >::Document::mBufferViews))
296 .Register(*js::MakeProperty("accessors",
297 js::Read::Array<gt::Accessor, js::ObjectReader<gt::Accessor>::Read>,
298 >::Document::mAccessors))
299 .Register(*js::MakeProperty("images",
300 js::Read::Array<gt::Image, js::ObjectReader<gt::Image>::Read>,
301 >::Document::mImages))
302 .Register(*js::MakeProperty("samplers",
303 js::Read::Array<gt::Sampler, js::ObjectReader<gt::Sampler>::Read>,
304 >::Document::mSamplers))
305 .Register(*js::MakeProperty("textures",
306 js::Read::Array<gt::Texture, js::ObjectReader<gt::Texture>::Read>,
307 >::Document::mTextures))
308 .Register(*js::MakeProperty("materials",
309 js::Read::Array<gt::Material, js::ObjectReader<gt::Material>::Read>,
310 >::Document::mMaterials))
311 .Register(*js::MakeProperty("meshes",
312 js::Read::Array<gt::Mesh, js::ObjectReader<gt::Mesh>::Read>,
313 >::Document::mMeshes))
314 .Register(*js::MakeProperty("skins",
315 js::Read::Array<gt::Skin, js::ObjectReader<gt::Skin>::Read>,
316 >::Document::mSkins))
317 .Register(*js::MakeProperty("cameras",
318 js::Read::Array<gt::Camera, js::ObjectReader<gt::Camera>::Read>,
319 >::Document::mCameras))
320 .Register(*js::MakeProperty("nodes",
321 js::Read::Array<gt::Node, js::ObjectReader<gt::Node>::Read>,
322 >::Document::mNodes))
323 .Register(*js::MakeProperty("animations",
325 >::Document::mAnimations))
326 .Register(*js::MakeProperty("scenes",
327 js::Read::Array<gt::Scene, js::ObjectReader<gt::Scene>::Read>,
328 >::Document::mScenes))
329 .Register(*js::MakeProperty("scene", gt::RefReader<gt::Document>::Read<gt::Scene, >::Document::mScenes>, >::Document::mScene)));
337 bool operator<(const NodeMapping& mapping, Index gltfIdx)
339 return mapping.gltfIdx < gltfIdx;
342 class NodeIndexMapper
345 NodeIndexMapper() = default;
346 NodeIndexMapper(const NodeIndexMapper&) = delete;
347 NodeIndexMapper& operator=(const NodeIndexMapper&) = delete;
349 ///@brief Registers a mapping of the @a gltfIdx of a node to its @a runtimeIdx .
350 ///@note If the indices are the same, the registration is omitted, in order to
351 /// save growing a vector.
352 void RegisterMapping(Index gltfIdx, Index runtimeIdx)
354 if(gltfIdx != runtimeIdx)
356 auto iInsert = std::lower_bound(mNodes.begin(), mNodes.end(), gltfIdx);
357 DALI_ASSERT_DEBUG(iInsert == mNodes.end() || iInsert->gltfIdx != gltfIdx);
358 mNodes.insert(iInsert, NodeMapping{gltfIdx, runtimeIdx});
362 ///@brief Retrieves the runtime index of a Node, mapped to the given @a gltfIdx.
363 Index GetRuntimeId(Index gltfIdx) const
365 auto iFind = std::lower_bound(mNodes.begin(), mNodes.end(), gltfIdx); // using custom operator<
366 return (iFind != mNodes.end() && iFind->gltfIdx == gltfIdx) ? iFind->runtimeIdx : gltfIdx;
370 std::vector<NodeMapping> mNodes;
373 struct ConversionContext
378 Index mDefaultMaterial;
380 std::vector<Index> mMeshIds;
381 NodeIndexMapper mNodeIndices;
384 SamplerFlags::Type ConvertWrapMode(gt::Wrap::Type w)
388 case gt::Wrap::REPEAT:
389 return SamplerFlags::WRAP_REPEAT;
390 case gt::Wrap::CLAMP_TO_EDGE:
391 return SamplerFlags::WRAP_CLAMP;
392 case gt::Wrap::MIRRORED_REPEAT:
393 return SamplerFlags::WRAP_MIRROR;
395 throw std::runtime_error("Invalid wrap type.");
399 SamplerFlags::Type ConvertSampler(const gt::Ref<gt::Sampler>& s)
403 return (s->mMinFilter < gt::Filter::NEAREST_MIPMAP_NEAREST) ? (s->mMinFilter - gt::Filter::NEAREST) : ((s->mMinFilter - gt::Filter::NEAREST_MIPMAP_NEAREST) + 2) | ((s->mMagFilter - gt::Filter::NEAREST) << SamplerFlags::FILTER_MAG_SHIFT) | (ConvertWrapMode(s->mWrapS) << SamplerFlags::WRAP_S_SHIFT) | (ConvertWrapMode(s->mWrapT) << SamplerFlags::WRAP_T_SHIFT);
407 // https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#texturesampler
408 // "The index of the sampler used by this texture. When undefined, a sampler with repeat wrapping and auto filtering should be used."
409 // "What is an auto filtering", I hear you ask. Since there's nothing else to determine mipmapping from - including glTF image
410 // properties, if not in some extension -, we will simply assume linear filtering.
411 return SamplerFlags::FILTER_LINEAR | (SamplerFlags::FILTER_LINEAR << SamplerFlags::FILTER_MAG_SHIFT) |
412 (SamplerFlags::WRAP_REPEAT << SamplerFlags::WRAP_S_SHIFT) | (SamplerFlags::WRAP_REPEAT << SamplerFlags::WRAP_T_SHIFT);
416 TextureDefinition ConvertTextureInfo(const gt::TextureInfo& mm)
418 return TextureDefinition{std::string(mm.mTexture->mSource->mUri), ConvertSampler(mm.mTexture->mSampler)};
421 void ConvertMaterial(const gt::Material& m, decltype(ResourceBundle::mMaterials)& outMaterials)
423 MaterialDefinition matDef;
425 auto& pbr = m.mPbrMetallicRoughness;
426 if(m.mAlphaMode != gt::AlphaMode::OPAQUE || pbr.mBaseColorFactor.a < 1.f)
428 matDef.mFlags |= MaterialDefinition::TRANSPARENCY;
431 if(m.mAlphaMode == gt::AlphaMode::MASK)
433 matDef.SetAlphaCutoff(std::min(1.f, std::max(0.f, m.mAlphaCutoff)));
436 matDef.mColor = pbr.mBaseColorFactor;
438 matDef.mTextureStages.reserve(!!pbr.mBaseColorTexture + !!pbr.mMetallicRoughnessTexture + !!m.mNormalTexture);
439 if(pbr.mBaseColorTexture)
441 const auto semantic = MaterialDefinition::ALBEDO;
442 matDef.mTextureStages.push_back({semantic, ConvertTextureInfo(pbr.mBaseColorTexture)});
443 // TODO: and there had better be one
444 matDef.mFlags |= semantic;
447 matDef.mMetallic = pbr.mMetallicFactor;
448 matDef.mRoughness = pbr.mRoughnessFactor;
450 if(pbr.mMetallicRoughnessTexture)
452 const auto semantic = MaterialDefinition::METALLIC | MaterialDefinition::ROUGHNESS |
453 MaterialDefinition::GLTF_CHANNELS;
454 matDef.mTextureStages.push_back({semantic, ConvertTextureInfo(pbr.mMetallicRoughnessTexture)});
455 // TODO: and there had better be one
456 matDef.mFlags |= semantic;
461 const auto semantic = MaterialDefinition::NORMAL;
462 matDef.mTextureStages.push_back({semantic, ConvertTextureInfo(m.mNormalTexture)});
463 // TODO: and there had better be one
464 matDef.mFlags |= semantic;
467 // TODO: handle doubleSided
469 outMaterials.emplace_back(std::move(matDef), TextureSet());
472 void ConvertMaterials(const gt::Document& doc, ConversionContext& cctx)
474 auto& outMaterials = cctx.mOutput.mResources.mMaterials;
475 outMaterials.reserve(doc.mMaterials.size());
477 for(auto& m : doc.mMaterials)
479 ConvertMaterial(m, outMaterials);
483 MeshDefinition::Accessor ConvertMeshPrimitiveAccessor(const gt::Accessor& acc)
485 DALI_ASSERT_ALWAYS((acc.mBufferView &&
486 (acc.mBufferView->mByteStride < std::numeric_limits<uint16_t>::max())) ||
487 (acc.mSparse && !acc.mBufferView));
489 DALI_ASSERT_ALWAYS(!acc.mSparse ||
490 ((acc.mSparse->mIndices.mBufferView && (acc.mSparse->mIndices.mBufferView->mByteStride < std::numeric_limits<uint16_t>::max())) &&
491 (acc.mSparse->mValues.mBufferView && (acc.mSparse->mValues.mBufferView->mByteStride < std::numeric_limits<uint16_t>::max()))));
493 MeshDefinition::SparseBlob sparseBlob;
496 const gt::Accessor::Sparse& sparse = *acc.mSparse;
497 const gt::ComponentTypedBufferViewClient& indices = sparse.mIndices;
498 const gt::BufferViewClient& values = sparse.mValues;
500 MeshDefinition::Blob indicesBlob(
501 indices.mBufferView->mByteOffset + indices.mByteOffset,
502 sparse.mCount * indices.GetBytesPerComponent(),
503 static_cast<uint16_t>(indices.mBufferView->mByteStride),
504 static_cast<uint16_t>(indices.GetBytesPerComponent()),
507 MeshDefinition::Blob valuesBlob(
508 values.mBufferView->mByteOffset + values.mByteOffset,
509 sparse.mCount * acc.GetElementSizeBytes(),
510 static_cast<uint16_t>(values.mBufferView->mByteStride),
511 static_cast<uint16_t>(acc.GetElementSizeBytes()),
515 sparseBlob = std::move(MeshDefinition::SparseBlob(std::move(indicesBlob), std::move(valuesBlob), acc.mSparse->mCount));
518 uint32_t bufferViewOffset = 0u;
519 uint32_t bufferViewStride = 0u;
522 bufferViewOffset = acc.mBufferView->mByteOffset;
523 bufferViewStride = acc.mBufferView->mByteStride;
526 return MeshDefinition::Accessor{
527 std::move(MeshDefinition::Blob{bufferViewOffset + acc.mByteOffset,
528 acc.GetBytesLength(),
529 static_cast<uint16_t>(bufferViewStride),
530 static_cast<uint16_t>(acc.GetElementSizeBytes()),
533 std::move(sparseBlob)};
536 void ConvertMeshes(const gt::Document& doc, ConversionContext& cctx)
538 uint32_t meshCount = 0;
539 cctx.mMeshIds.reserve(doc.mMeshes.size());
540 for(auto& m : doc.mMeshes)
542 cctx.mMeshIds.push_back(meshCount);
543 meshCount += m.mPrimitives.size();
546 auto& outMeshes = cctx.mOutput.mResources.mMeshes;
547 outMeshes.reserve(meshCount);
548 for(auto& m : doc.mMeshes)
550 for(auto& p : m.mPrimitives)
552 MeshDefinition meshDef;
554 auto& attribs = p.mAttributes;
555 meshDef.mUri = attribs.begin()->second->mBufferView->mBuffer->mUri;
556 meshDef.mPrimitiveType = GLTF2_TO_DALI_PRIMITIVES[p.mMode];
558 auto& accPositions = *attribs.find(gt::Attribute::POSITION)->second;
559 meshDef.mPositions = ConvertMeshPrimitiveAccessor(accPositions);
561 const bool needNormalsTangents = accPositions.mType == gt::AccessorType::VEC3;
562 for(auto& am : ATTRIBUTE_MAPPINGS)
564 auto iFind = attribs.find(am.mType);
565 if(iFind != attribs.end())
567 DALI_ASSERT_DEBUG(iFind->second->mBufferView->mBuffer->mUri.compare(meshDef.mUri) == 0);
568 auto& accessor = meshDef.*(am.mAccessor);
569 accessor = ConvertMeshPrimitiveAccessor(*iFind->second);
571 // Fixing up -- a few of glTF2 sample models have VEC4 tangents; we need VEC3s.
572 if(iFind->first == gt::Attribute::TANGENT && (accessor.mBlob.mElementSizeHint > am.mElementSizeRequired))
574 accessor.mBlob.mStride = std::max(static_cast<uint16_t>(accessor.mBlob.mStride + accessor.mBlob.mElementSizeHint - am.mElementSizeRequired),
575 accessor.mBlob.mElementSizeHint);
576 accessor.mBlob.mElementSizeHint = am.mElementSizeRequired;
579 if(iFind->first == gt::Attribute::JOINTS_0)
581 meshDef.mFlags |= (iFind->second->mComponentType == gt::Component::UNSIGNED_SHORT) * MeshDefinition::U16_JOINT_IDS;
582 DALI_ASSERT_DEBUG(MaskMatch(meshDef.mFlags, MeshDefinition::U16_JOINT_IDS) || iFind->second->mComponentType == gt::Component::FLOAT);
585 else if(needNormalsTangents)
589 case gt::Attribute::NORMAL:
590 meshDef.RequestNormals();
593 case gt::Attribute::TANGENT:
594 meshDef.RequestTangents();
605 meshDef.mIndices = ConvertMeshPrimitiveAccessor(*p.mIndices);
606 meshDef.mFlags |= (p.mIndices->mComponentType == gt::Component::UNSIGNED_INT) * MeshDefinition::U32_INDICES;
607 DALI_ASSERT_DEBUG(MaskMatch(meshDef.mFlags, MeshDefinition::U32_INDICES) || p.mIndices->mComponentType == gt::Component::UNSIGNED_SHORT);
610 if(!p.mTargets.empty())
612 meshDef.mBlendShapes.reserve(p.mTargets.size());
613 meshDef.mBlendShapeVersion = BlendShapes::Version::VERSION_2_0;
614 for(const auto& target : p.mTargets)
616 MeshDefinition::BlendShape blendShape;
618 auto endIt = target.end();
619 auto it = target.find(gt::Attribute::POSITION);
622 blendShape.deltas = ConvertMeshPrimitiveAccessor(*it->second);
624 it = target.find(gt::Attribute::NORMAL);
627 blendShape.normals = ConvertMeshPrimitiveAccessor(*it->second);
629 it = target.find(gt::Attribute::TANGENT);
632 blendShape.tangents = ConvertMeshPrimitiveAccessor(*it->second);
635 if(!m.mWeights.empty())
637 blendShape.weight = m.mWeights[meshDef.mBlendShapes.size()];
640 meshDef.mBlendShapes.push_back(std::move(blendShape));
644 outMeshes.push_back({std::move(meshDef), MeshGeometry{}});
649 ModelNode* MakeModelNode(const gt::Mesh::Primitive& prim, ConversionContext& cctx)
651 auto modelNode = new ModelNode();
653 modelNode->mShaderIdx = 0; // TODO: further thought
655 auto materialIdx = prim.mMaterial.GetIndex();
656 if(INVALID_INDEX == materialIdx)
658 // https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#default-material
659 if(INVALID_INDEX == cctx.mDefaultMaterial)
661 auto& outMaterials = cctx.mOutput.mResources.mMaterials;
662 cctx.mDefaultMaterial = outMaterials.size();
664 ConvertMaterial(gt::Material{}, outMaterials);
667 materialIdx = cctx.mDefaultMaterial;
670 modelNode->mMaterialIdx = materialIdx;
675 void ConvertCamera(const gt::Camera& camera, CameraParameters& camParams)
677 camParams.isPerspective = camera.mType.compare("perspective") == 0;
678 if(camParams.isPerspective)
680 auto& perspective = camera.mPerspective;
681 camParams.yFov = Degree(Radian(perspective.mYFov)).degree;
682 camParams.zNear = perspective.mZNear;
683 camParams.zFar = perspective.mZFar;
684 // TODO: yes, we seem to ignore aspectRatio in CameraParameters.
688 auto& ortho = camera.mOrthographic;
689 camParams.orthographicSize = Vector4(-ortho.mXMag, ortho.mXMag, ortho.mYMag, -ortho.mYMag) * .5f;
690 camParams.zNear = ortho.mZNear;
691 camParams.zFar = ortho.mZFar;
695 void ConvertNode(gt::Node const& node, const Index gltfIdx, Index parentIdx, ConversionContext& cctx)
697 auto& output = cctx.mOutput;
698 auto& scene = output.mScene;
699 auto& resources = output.mResources;
701 const auto idx = scene.GetNodeCount();
702 auto weakNode = scene.AddNode([&]() {
703 std::unique_ptr<NodeDefinition> nodeDef{new NodeDefinition()};
705 nodeDef->mParentIdx = parentIdx;
706 nodeDef->mName = node.mName;
707 if(nodeDef->mName.empty())
709 // TODO: Production quality generation of unique names.
710 nodeDef->mName = std::to_string(reinterpret_cast<uintptr_t>(nodeDef.get()));
713 if(!node.mSkin) // Nodes with skinned meshes are not supposed to have local transforms.
715 nodeDef->mPosition = node.mTranslation;
716 nodeDef->mOrientation = node.mRotation;
717 nodeDef->mScale = node.mScale;
724 ExceptionFlinger(ASSERT_LOCATION) << "Node name '" << node.mName << "' is not unique; scene is invalid.";
727 cctx.mNodeIndices.RegisterMapping(gltfIdx, idx);
729 Index skeletonIdx = node.mSkin ? node.mSkin.GetIndex() : INVALID_INDEX;
730 if(node.mMesh && !node.mMesh->mPrimitives.empty())
732 auto& mesh = *node.mMesh;
734 auto iPrim = mesh.mPrimitives.begin();
735 auto modelNode = MakeModelNode(*iPrim, cctx);
736 auto meshIdx = cctx.mMeshIds[node.mMesh.GetIndex()];
737 modelNode->mMeshIdx = meshIdx;
739 weakNode->mRenderable.reset(modelNode);
741 DALI_ASSERT_DEBUG(resources.mMeshes[meshIdx].first.mSkeletonIdx == INVALID_INDEX ||
742 resources.mMeshes[meshIdx].first.mSkeletonIdx == skeletonIdx);
743 resources.mMeshes[meshIdx].first.mSkeletonIdx = skeletonIdx;
745 // As does model-exporter, we'll create anonymous child nodes for additional mesh( primitiv)es.
746 while(++iPrim != mesh.mPrimitives.end())
748 std::unique_ptr<NodeDefinition> child{new NodeDefinition};
749 child->mParentIdx = idx;
751 auto childModel = MakeModelNode(*iPrim, cctx);
754 childModel->mMeshIdx = meshIdx;
756 child->mRenderable.reset(childModel);
758 scene.AddNode(std::move(child));
760 DALI_ASSERT_DEBUG(resources.mMeshes[meshIdx].first.mSkeletonIdx == INVALID_INDEX ||
761 resources.mMeshes[meshIdx].first.mSkeletonIdx == skeletonIdx);
762 resources.mMeshes[meshIdx].first.mSkeletonIdx = skeletonIdx;
768 CameraParameters camParams;
769 ConvertCamera(*node.mCamera, camParams);
771 camParams.matrix.SetTransformComponents(node.mScale, node.mRotation, node.mTranslation);
772 output.mCameraParameters.push_back(camParams);
775 for(auto& n : node.mChildren)
777 ConvertNode(*n, n.GetIndex(), idx, cctx);
781 void ConvertSceneNodes(const gt::Scene& scene, ConversionContext& cctx)
783 auto& outScene = cctx.mOutput.mScene;
784 Index rootIdx = outScene.GetNodeCount();
785 switch(scene.mNodes.size())
791 ConvertNode(*scene.mNodes[0], scene.mNodes[0].GetIndex(), INVALID_INDEX, cctx);
792 outScene.AddRootNode(rootIdx);
797 std::unique_ptr<NodeDefinition> sceneRoot{new NodeDefinition()};
798 sceneRoot->mName = "GLTF_LOADER_SCENE_ROOT_" + std::to_string(outScene.GetRoots().size());
800 outScene.AddNode(std::move(sceneRoot));
801 outScene.AddRootNode(rootIdx);
803 for(auto& n : scene.mNodes)
805 ConvertNode(*n, n.GetIndex(), rootIdx, cctx);
812 void ConvertNodes(const gt::Document& doc, ConversionContext& cctx)
814 ConvertSceneNodes(*doc.mScene, cctx);
816 for(uint32_t i = 0, i1 = doc.mScene.GetIndex(); i < i1; ++i)
818 ConvertSceneNodes(doc.mScenes[i], cctx);
821 for(uint32_t i = doc.mScene.GetIndex() + 1; i < doc.mScenes.size(); ++i)
823 ConvertSceneNodes(doc.mScenes[i], cctx);
828 void LoadDataFromAccessor(const std::string& path, Vector<T>& dataBuffer, uint32_t offset, uint32_t size)
830 std::ifstream animationBinaryFile(path, std::ifstream::binary);
832 if(!animationBinaryFile.is_open())
834 throw std::runtime_error("Failed to load " + path);
837 animationBinaryFile.seekg(offset);
838 animationBinaryFile.read(reinterpret_cast<char*>(dataBuffer.Begin()), size);
839 animationBinaryFile.close();
843 float LoadDataFromAccessors(const std::string& path, const gltf2::Accessor& input, const gltf2::Accessor& output, Vector<float>& inputDataBuffer, Vector<T>& outputDataBuffer)
845 inputDataBuffer.Resize(input.mCount);
846 outputDataBuffer.Resize(output.mCount);
848 const uint32_t inputDataBufferSize = input.GetBytesLength();
849 const uint32_t outputDataBufferSize = output.GetBytesLength();
851 LoadDataFromAccessor<float>(path + std::string(input.mBufferView->mBuffer->mUri), inputDataBuffer, input.mBufferView->mByteOffset + input.mByteOffset, inputDataBufferSize);
852 LoadDataFromAccessor<T>(path + std::string(output.mBufferView->mBuffer->mUri), outputDataBuffer, output.mBufferView->mByteOffset + output.mByteOffset, outputDataBufferSize);
853 ApplyAccessorMinMax(output, reinterpret_cast<float*>(outputDataBuffer.begin()));
855 return inputDataBuffer[input.mCount - 1u];
859 float LoadKeyFrames(const std::string& path, const gt::Animation::Channel& channel, KeyFrames& keyFrames, gt::Animation::Channel::Target::Type type)
861 const gltf2::Accessor& input = *channel.mSampler->mInput;
862 const gltf2::Accessor& output = *channel.mSampler->mOutput;
864 Vector<float> inputDataBuffer;
865 Vector<T> outputDataBuffer;
867 const float duration = LoadDataFromAccessors<T>(path, input, output, inputDataBuffer, outputDataBuffer);
869 for(uint32_t i = 0; i < input.mCount; ++i)
871 keyFrames.Add(inputDataBuffer[i] / duration, outputDataBuffer[i]);
877 float LoadBlendShapeKeyFrames(const std::string& path, const gt::Animation::Channel& channel, const std::string& nodeName, uint32_t& propertyIndex, std::vector<SceneLoader::AnimatedProperty>& properties)
879 const gltf2::Accessor& input = *channel.mSampler->mInput;
880 const gltf2::Accessor& output = *channel.mSampler->mOutput;
882 Vector<float> inputDataBuffer;
883 Vector<float> outputDataBuffer;
885 const float duration = LoadDataFromAccessors<float>(path, input, output, inputDataBuffer, outputDataBuffer);
887 char weightNameBuffer[32];
888 auto prefixSize = snprintf(weightNameBuffer, sizeof(weightNameBuffer), "%s[", BLEND_SHAPE_WEIGHTS_UNIFORM.c_str());
889 char* const pWeightName = weightNameBuffer + prefixSize;
890 const auto remainingSize = sizeof(weightNameBuffer) - prefixSize;
891 for(uint32_t weightIndex = 0u, endWeightIndex = channel.mSampler->mOutput->mCount / channel.mSampler->mInput->mCount; weightIndex < endWeightIndex; ++weightIndex)
893 AnimatedProperty& animatedProperty = properties[propertyIndex++];
895 animatedProperty.mNodeName = nodeName;
896 snprintf(pWeightName, remainingSize, "%d]", weightIndex);
897 animatedProperty.mPropertyName = std::string(weightNameBuffer);
899 animatedProperty.mKeyFrames = KeyFrames::New();
900 for(uint32_t i = 0; i < input.mCount; ++i)
902 animatedProperty.mKeyFrames.Add(inputDataBuffer[i] / duration, outputDataBuffer[i * endWeightIndex + weightIndex]);
905 animatedProperty.mTimePeriod = {0.f, duration};
911 void ConvertAnimations(const gt::Document& doc, ConversionContext& cctx)
913 auto& output = cctx.mOutput;
915 output.mAnimationDefinitions.reserve(output.mAnimationDefinitions.size() + doc.mAnimations.size());
917 for(const auto& animation : doc.mAnimations)
919 AnimationDefinition animationDef;
921 if(!animation.mName.empty())
923 animationDef.mName = animation.mName;
926 uint32_t numberOfProperties = 0u;
928 for(const auto& channel : animation.mChannels)
930 numberOfProperties += channel.mSampler->mOutput->mCount;
932 animationDef.mProperties.resize(numberOfProperties);
934 Index propertyIndex = 0u;
935 for(const auto& channel : animation.mChannels)
937 std::string nodeName;
938 if(!channel.mTarget.mNode->mName.empty())
940 nodeName = channel.mTarget.mNode->mName;
944 Index index = cctx.mNodeIndices.GetRuntimeId(channel.mTarget.mNode.GetIndex());
945 nodeName = cctx.mOutput.mScene.GetNode(index)->mName;
948 float duration = 0.f;
950 switch(channel.mTarget.mPath)
952 case gt::Animation::Channel::Target::TRANSLATION:
954 AnimatedProperty& animatedProperty = animationDef.mProperties[propertyIndex];
956 animatedProperty.mNodeName = nodeName;
957 animatedProperty.mPropertyName = POSITION_PROPERTY;
959 animatedProperty.mKeyFrames = KeyFrames::New();
960 duration = LoadKeyFrames<Vector3>(cctx.mPath, channel, animatedProperty.mKeyFrames, channel.mTarget.mPath);
962 animatedProperty.mTimePeriod = {0.f, duration};
965 case gt::Animation::Channel::Target::ROTATION:
967 AnimatedProperty& animatedProperty = animationDef.mProperties[propertyIndex];
969 animatedProperty.mNodeName = nodeName;
970 animatedProperty.mPropertyName = ORIENTATION_PROPERTY;
972 animatedProperty.mKeyFrames = KeyFrames::New();
973 duration = LoadKeyFrames<Quaternion>(cctx.mPath, channel, animatedProperty.mKeyFrames, channel.mTarget.mPath);
975 animatedProperty.mTimePeriod = {0.f, duration};
978 case gt::Animation::Channel::Target::SCALE:
980 AnimatedProperty& animatedProperty = animationDef.mProperties[propertyIndex];
982 animatedProperty.mNodeName = nodeName;
983 animatedProperty.mPropertyName = SCALE_PROPERTY;
985 animatedProperty.mKeyFrames = KeyFrames::New();
986 duration = LoadKeyFrames<Vector3>(cctx.mPath, channel, animatedProperty.mKeyFrames, channel.mTarget.mPath);
988 animatedProperty.mTimePeriod = {0.f, duration};
991 case gt::Animation::Channel::Target::WEIGHTS:
993 duration = LoadBlendShapeKeyFrames(cctx.mPath, channel, nodeName, propertyIndex, animationDef.mProperties);
999 // nothing to animate.
1004 animationDef.mDuration = std::max(duration, animationDef.mDuration);
1009 output.mAnimationDefinitions.push_back(std::move(animationDef));
1013 void ProcessSkins(const gt::Document& doc, ConversionContext& cctx)
1015 // https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skininversebindmatrices
1016 // If an inverseBindMatrices accessor was provided, we'll load the joint data from the buffer,
1017 // otherwise we'll set identity matrices for inverse bind pose.
1018 struct IInverseBindMatrixProvider
1020 virtual ~IInverseBindMatrixProvider()
1023 virtual void Provide(Matrix& ibm) = 0;
1026 struct InverseBindMatrixAccessor : public IInverseBindMatrixProvider
1028 std::ifstream mStream;
1029 const uint32_t mElementSizeBytes;
1031 InverseBindMatrixAccessor(const gt::Accessor& accessor, const std::string& path)
1032 : mStream(path + std::string(accessor.mBufferView->mBuffer->mUri), std::ios::binary),
1033 mElementSizeBytes(accessor.GetElementSizeBytes())
1035 DALI_ASSERT_ALWAYS(mStream);
1036 DALI_ASSERT_DEBUG(accessor.mType == gt::AccessorType::MAT4 && accessor.mComponentType == gt::Component::FLOAT);
1038 mStream.seekg(accessor.mBufferView->mByteOffset + accessor.mByteOffset);
1041 virtual void Provide(Matrix& ibm) override
1043 DALI_ASSERT_ALWAYS(mStream.read(reinterpret_cast<char*>(ibm.AsFloat()), mElementSizeBytes));
1047 struct DefaultInverseBindMatrixProvider : public IInverseBindMatrixProvider
1049 virtual void Provide(Matrix& ibm) override
1051 ibm = Matrix::IDENTITY;
1055 auto& resources = cctx.mOutput.mResources;
1056 resources.mSkeletons.reserve(doc.mSkins.size());
1058 for(auto& s : doc.mSkins)
1060 std::unique_ptr<IInverseBindMatrixProvider> ibmProvider;
1061 if(s.mInverseBindMatrices)
1063 ibmProvider.reset(new InverseBindMatrixAccessor(*s.mInverseBindMatrices, cctx.mPath));
1067 ibmProvider.reset(new DefaultInverseBindMatrixProvider());
1070 SkeletonDefinition skeleton;
1071 if(s.mSkeleton.GetIndex() != INVALID_INDEX)
1073 skeleton.mRootNodeIdx = cctx.mNodeIndices.GetRuntimeId(s.mSkeleton.GetIndex());
1076 skeleton.mJoints.resize(s.mJoints.size());
1077 auto iJoint = skeleton.mJoints.begin();
1078 for(auto& j : s.mJoints)
1080 iJoint->mNodeIdx = cctx.mNodeIndices.GetRuntimeId(j.GetIndex());
1082 ibmProvider->Provide(iJoint->mInverseBindMatrix);
1087 resources.mSkeletons.push_back(std::move(skeleton));
1091 void ProduceShaders(ShaderDefinitionFactory& shaderFactory, SceneDefinition& scene)
1093 for(size_t i0 = 0, i1 = scene.GetNodeCount(); i0 != i1; ++i0)
1095 auto nodeDef = scene.GetNode(i0);
1096 if(auto renderable = nodeDef->mRenderable.get())
1098 renderable->mShaderIdx = shaderFactory.ProduceShader(*nodeDef);
1103 void SetObjectReaders()
1105 js::SetObjectReader(BUFFER_READER);
1106 js::SetObjectReader(BUFFER_VIEW_READER);
1107 js::SetObjectReader(BUFFER_VIEW_CLIENT_READER);
1108 js::SetObjectReader(COMPONENT_TYPED_BUFFER_VIEW_CLIENT_READER);
1109 js::SetObjectReader(ACCESSOR_SPARSE_READER);
1110 js::SetObjectReader(ACCESSOR_READER);
1111 js::SetObjectReader(IMAGE_READER);
1112 js::SetObjectReader(SAMPLER_READER);
1113 js::SetObjectReader(TEXURE_READER);
1114 js::SetObjectReader(TEXURE_INFO_READER);
1115 js::SetObjectReader(MATERIAL_PBR_READER);
1116 js::SetObjectReader(MATERIAL_READER);
1117 js::SetObjectReader(MESH_PRIMITIVE_READER);
1118 js::SetObjectReader(MESH_READER);
1119 js::SetObjectReader(SKIN_READER);
1120 js::SetObjectReader(CAMERA_PERSPECTIVE_READER);
1121 js::SetObjectReader(CAMERA_ORTHOGRAPHIC_READER);
1122 js::SetObjectReader(CAMERA_READER);
1123 js::SetObjectReader(NODE_READER);
1124 js::SetObjectReader(ANIMATION_SAMPLER_READER);
1125 js::SetObjectReader(ANIMATION_TARGET_READER);
1126 js::SetObjectReader(ANIMATION_CHANNEL_READER);
1127 js::SetObjectReader(ANIMATION_READER);
1128 js::SetObjectReader(SCENE_READER);
1133 void LoadGltfScene(const std::string& url, ShaderDefinitionFactory& shaderFactory, LoadResult& params)
1135 bool failed = false;
1136 auto js = LoadTextFile(url.c_str(), &failed);
1139 throw std::runtime_error("Failed to load " + url);
1142 json::unique_ptr root(json_parse(js.c_str(), js.size()));
1145 throw std::runtime_error("Failed to parse " + url);
1148 static bool setObjectReaders = true;
1149 if(setObjectReaders)
1151 // NOTE: only referencing own, anonymous namespace, const objects; the pointers will never need to change.
1153 setObjectReaders = false;
1158 auto& rootObj = js::Cast<json_object_s>(*root);
1159 auto jsAsset = js::FindObjectChild("asset", rootObj);
1160 auto jsAssetVersion = js::FindObjectChild("version", js::Cast<json_object_s>(*jsAsset));
1161 doc.mAsset.mVersion = js::Read::StringView(*jsAssetVersion);
1163 gt::SetRefReaderObject(doc);
1164 DOCUMENT_READER.Read(rootObj, doc);
1166 auto path = url.substr(0, url.rfind('/') + 1);
1167 ConversionContext cctx{params, path, INVALID_INDEX};
1169 ConvertMaterials(doc, cctx);
1170 ConvertMeshes(doc, cctx);
1171 ConvertNodes(doc, cctx);
1172 ConvertAnimations(doc, cctx);
1174 ProcessSkins(doc, cctx);
1176 ProduceShaders(shaderFactory, params.mScene);
1177 params.mScene.EnsureUniqueSkinningShaderInstances(params.mResources);
1180 } // namespace SceneLoader