Blindly dump tinygltf in like a neanderthal

2025-02-20 13:00:18 +01:00 · 2023-11-29 05:23:02 -05:00 · 2023-11-29 05:23:02 -05:00 · 71b4349f1b
commit 71b4349f1b
parent 7f9fe97044
35 changed files with 64491 additions and 0 deletions
--- a/source/lib/tinygltf/.clang-format
+++ b/source/lib/tinygltf/.clang-format
@ -0,0 +1,7 @@
+---
+BasedOnStyle: Google
+IndentWidth: 2
+TabWidth: 2
+UseTab: Never
+BreakBeforeBraces: Attach
+Standard: Cpp03
--- a/source/lib/tinygltf/.github/FUNDING.yml
+++ b/source/lib/tinygltf/.github/FUNDING.yml
@ -0,0 +1,13 @@
+# These are supported funding model platforms
+
+github: syoyo
+#patreon: # Replace with a single Patreon username
+#open_collective: # Replace with a single Open Collective username
+#ko_fi: # Replace with a single Ko-fi username
+#tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+#community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+#liberapay: # Replace with a single Liberapay username
+#issuehunt: # Replace with a single IssueHunt username
+#otechie: # Replace with a single Otechie username
+#lfx_crowdfunding: # Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
+#custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
--- a/source/lib/tinygltf/.github/ISSUE_TEMPLATE/config.yml
+++ b/source/lib/tinygltf/.github/ISSUE_TEMPLATE/config.yml
@ -0,0 +1 @@
+blank_issues_enabled: false
--- a/source/lib/tinygltf/.github/ISSUE_TEMPLATE/issue-report.md
+++ b/source/lib/tinygltf/.github/ISSUE_TEMPLATE/issue-report.md
@ -0,0 +1,30 @@
+---
+name: Issue report
+about: Create a report
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the issue**
+
+A clear and concise description of what the issue is.
+
+**To Reproduce**
+
+- OS
+- Compiler, compiler version, compile options
+- Please attach minimal and reproducible .glTF file if you got an issue related to .glTF data
+
+**Expected behaviour**
+
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+
+If applicable, add screenshots to help explain your problem.
+
+
+**Additional context**
+Add any other context about the problem here.
--- a/source/lib/tinygltf/.github/workflows/c-cpp.yml
+++ b/source/lib/tinygltf/.github/workflows/c-cpp.yml
@ -0,0 +1,169 @@
+name: C/C++ CI
+
+on: [push, pull_request]
+
+jobs:
+
+  # gcc4.8 is too old and ubuntu-18.04 image is not supported in GitHub Actions anymore,
+  # so disable this build.
+  ## compile with older gcc4.8
+  #build-gcc48:
+
+  #  runs-on: ubuntu-18.04
+  #  name: Build with gcc 4.8
+
+  #  steps:
+  #    - name: Checkout
+  #      uses: actions/checkout@v1
+
+  #    - name: Build
+  #      run: |
+  #          sudo apt-get update
+  #          sudo apt-get install -y build-essential
+  #          sudo apt-get install -y gcc-4.8 g++-4.8
+  #          g++-4.8 -std=c++11 -o loader_example loader_example.cc
+
+  #    - name: NoexceptBuild
+  #      run: |
+  #          g++-4.8 -DTINYGLTF_NOEXCEPTION -std=c++11 -o loader_example loader_example.cc
+
+  #    - name: RapidjsonBuild
+  #      run: |
+  #          git clone https://github.com/Tencent/rapidjson
+  #          g++-4.8 -DTINYGLTF_USE_RAPIDJSON -I./rapidjson/include/rapidjson -std=c++11 -o loader_example loader_example.cc
+
+  # compile with mingw gcc cross
+  build-mingw-cross:
+
+    runs-on: ubuntu-latest
+    name: Build with MinGW gcc cross
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Build
+        run: |
+            sudo apt-get update
+            sudo apt-get install -y build-essential
+            sudo apt-get install -y mingw-w64
+            x86_64-w64-mingw32-g++ -std=c++11 -o loader_example loader_example.cc
+
+  # Windows(x64) + Visual Studio 2022 build
+  # Assume windows-latest have VS2022 installed
+  build-windows-msvc:
+
+    runs-on: windows-latest
+    name: Build for Windows(x64, MSVC)
+
+    # Use system installed cmake
+    # https://help.github.com/en/actions/reference/software-installed-on-github-hosted-runners
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Configure
+        run: |
+          mkdir build
+          cd build
+          cmake --help
+          cmake -G "Visual Studio 17 2022" -A x64 -DTINYGLTF_BUILD_LOADER_EXAMPLE=On -DTINYGLTF_BUILD_GL_EXAMPLES=Off -DTINYGLTF_BUILD_VALIDATOR_EXAMPLE=On ..
+          cd ..
+      - name: Build
+        run: cmake --build build --config Release
+
+
+  build-linux:
+
+    runs-on: ubuntu-latest
+    name: Buld with gcc
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: build
+      run: |
+        g++ -std=c++11 -o loader_example loader_example.cc
+    - name: test
+      run: |
+        ./loader_example models/Cube/Cube.gltf
+
+    - name: tests
+      run: |
+        cd tests
+        g++ -I../  -std=c++11 -g -O0 -o tester tester.cc
+        ./tester
+        cd ..
+
+    - name: noexcept_tests
+      run: |
+        cd tests
+        g++ -DTINYGLTF_NOEXCEPTION -I../  -std=c++11 -g -O0 -o tester_noexcept tester.cc
+        ./tester_noexcept
+        cd ..
+
+
+  build-rapidjson-linux:
+
+    runs-on: ubuntu-latest
+    name: Buld with gcc + rapidjson
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: build
+      run: |
+        git clone https://github.com/Tencent/rapidjson
+        g++ -v
+        g++ -DTINYGLTF_USE_RAPIDJSON -I./rapidjson/include/rapidjson -std=c++11 -o loader_example loader_example.cc
+
+    - name: loader_example_test
+      run: |
+        ./loader_example models/Cube/Cube.gltf
+
+    - name: tests
+      run: |
+        cd tests
+        g++ -DTINYGLTF_USE_RAPIDJSON -I../rapidjson/include/rapidjson -I../  -std=c++11 -g -O0 -o tester tester.cc
+        ./tester
+        cd ..
+
+    - name: noexcept_tests
+      run: |
+        cd tests
+        g++ -DTINYGLTF_USE_RAPIDJSON -I../rapidjson/include/rapidjson -DTINYGLTF_NOEXCEPTION -I../  -std=c++11 -g -O0 -o tester_noexcept tester.cc
+        ./tester_noexcept
+        cd ..
+
+  # Cross-compile for aarch64 linux target
+  build-cross-aarch64:
+
+    runs-on: ubuntu-latest
+    name: Build on cross aarch64
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Build
+        run: |
+            sudo apt-get update
+            sudo apt-get install -y build-essential
+            sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
+
+            git clone https://github.com/Tencent/rapidjson
+            aarch64-linux-gnu-g++ -DTINYGLTF_USE_RAPIDJSON -I./rapidjson/include/rapidjson -std=c++11 -g -O0 -o loader_example loader_example.cc
+
+  # macOS clang
+  build-macos:
+
+    runs-on: macos-latest
+    name: Build on macOS
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Build
+        run: |
+            clang++ -std=c++11 -g -O0 -o loader_example loader_example.cc
+            ./loader_example models/Cube/Cube.gltf
+
+            git clone https://github.com/Tencent/rapidjson
+            clang++ -DTINYGLTF_USE_RAPIDJSON -I./rapidjson/include/rapidjson -std=c++11 -g -O0 -o loader_example loader_example.cc
+
--- a/source/lib/tinygltf/.github/workflows/codeql-analysis.yml
+++ b/source/lib/tinygltf/.github/workflows/codeql-analysis.yml
@ -0,0 +1,72 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "master" ]
+  schedule:
+    - cron: '21 20 * * 5'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp', 'python' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        
+        # Details on CodeQL's query packs refer to : https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        # queries: security-extended,security-and-quality
+
+        
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+    #   If the Autobuild fails above, remove it and uncomment the following three lines. 
+    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+    # - run: |
+    #   echo "Run, Build Application using script"
+    #   ./location_of_script_within_repo/buildscript.sh
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2
--- a/source/lib/tinygltf/.github/workflows/mingw-w64-msys2.yml
+++ b/source/lib/tinygltf/.github/workflows/mingw-w64-msys2.yml
@ -0,0 +1,45 @@
+name: MSYS2 MinGW-w64 Windows 64bit Build
+
+on:
+  push:
+    branches:
+      - release
+      - devel
+    paths:
+    - 'tiny_gltf.*'
+    - 'CMakeLists.txt'
+    - '.github/workflows/mingw-w64-msys2.yml'
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  mingw-w64-msys2-build:
+    name: MSYS2 MinGW-w64 Windows Build
+    runs-on: windows-latest
+    defaults:
+      run:
+        shell: msys2 {0}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install core & build dependencies
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: UCRT64
+          install: base-devel
+          pacboy: >-
+            cc:p cmake:p ninja:p
+          update: true
+          release: false
+
+      - name: Configure
+        run: |
+          cmake \
+            -G"Ninja" \
+            -S . \
+            -B build
+
+      - name: Build
+        run: |
+          cmake --build build
+
--- a/source/lib/tinygltf/.gitignore
+++ b/source/lib/tinygltf/.gitignore
@ -0,0 +1,79 @@
+# CMake
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+
+#Files created by the CI scripts (downloading and installing premake)
+premake5
+premake5.tar.gz
+
+#built examples
+/examples/raytrace/bin/
+
+#visual studio files
+*.sln
+*.vcxproj*
+.vs
+
+#binary directories
+bin/
+obj/
+out/
+
+#runtime gui config
+imgui.ini
+
+#visual stuido code
+.vscode
+
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+loader_example
+tests/tester
+tests/tester_noexcept
+tests/issue-97.gltf
+tests/issue-261.gltf
+
+# unignore
+!Makefile
+!examples/build-gltf/Makefile
+!examples/raytrace/cornellbox_suzanne.obj
+!tests/Makefile
+!tools/windows/premake5.exe
--- a/source/lib/tinygltf/.travis-before-install.sh
+++ b/source/lib/tinygltf/.travis-before-install.sh
@ -0,0 +1,10 @@
+#!/bin/bash
+
+if [[ "$TRAVIS_OS_NAME" == "osx" ]]
+then
+    brew upgrade
+    curl -o premake5.tar.gz https://github.com/premake/premake-core/releases/download/v5.0.0-alpha12/premake-5.0.0-alpha12-macosx.tar.gz
+else
+    wget https://github.com/premake/premake-core/releases/download/v5.0.0-alpha12/premake-5.0.0-alpha12-linux.tar.gz -O premake5.tar.gz
+fi
+tar xzf premake5.tar.gz
--- a/source/lib/tinygltf/.travis.yml
+++ b/source/lib/tinygltf/.travis.yml
@ -0,0 +1,63 @@
+language: cpp
+sudo: false
+matrix:
+  include:
+  - addons: &1
+      apt:
+        sources:
+        - george-edison55-precise-backports
+        - ubuntu-toolchain-r-test
+        - llvm-toolchain-trusty-3.9
+        packages:
+        - g++-4.9
+        - clang-3.9
+    compiler: clang
+    env: COMPILER_VERSION=3.9 BUILD_TYPE=Debug
+  - addons: *1
+    compiler: clang
+    env: COMPILER_VERSION=3.9 BUILD_TYPE=Release
+  - addons: &2
+      apt:
+        sources:
+        - george-edison55-precise-backports
+        - ubuntu-toolchain-r-test
+        packages:
+        - g++-4.9
+    compiler: gcc
+    env: COMPILER_VERSION=4.9 BUILD_TYPE=Debug EXTRA_CXXFLAGS="-fsanitize=address"
+  - addons: *2
+    compiler: gcc
+    env: COMPILER_VERSION=4.9 BUILD_TYPE=Release EXTRA_CXXFLAGS="-fsanitize=address"
+  - addons: *1
+    compiler: clang
+    env: COMPILER_VERSION=3.9 BUILD_TYPE=Debug CFLAGS="-O0" CXXFLAGS="-O0"
+  - addons: &3
+      apt:
+        sources:
+        - ubuntu-toolchain-r-test
+        packages:
+        - g++-4.8
+    compiler: gcc
+    env: COMPILER_VERSION=4.8 BUILD_TYPE=Debug
+  - addons: *3
+    compiler: gcc
+    env: COMPILER_VERSION=4.8 BUILD_TYPE=Release
+
+before_install:
+  - ./.travis-before-install.sh
+
+
+script:
+  - export CC="${CC}-${COMPILER_VERSION}"
+  - export CXX="${CXX}-${COMPILER_VERSION}"
+  - ${CC} -v
+  - ${CXX} ${EXTRA_CXXFLAGS} -std=c++11 -Wall -g -o loader_example loader_example.cc
+  - ./loader_example ./models/Cube/Cube.gltf
+  - cd tests
+  - clang++ -v
+  - make
+  - ./tester
+  - ./tester_noexcept
+  - cd ../examples/raytrace
+  - ../../premake5 gmake
+  - make
--- a/source/lib/tinygltf/CMakeLists.txt
+++ b/source/lib/tinygltf/CMakeLists.txt
@ -0,0 +1,79 @@
+cmake_minimum_required(VERSION 3.6)
+
+project(tinygltf)
+
+include(GNUInstallDirs)
+include(CMakePackageConfigHelpers)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED On)
+set(CMAKE_CXX_EXTENSIONS Off)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+option(TINYGLTF_BUILD_LOADER_EXAMPLE "Build loader_example(load glTF and dump infos)" ON)
+option(TINYGLTF_BUILD_GL_EXAMPLES "Build GL exampels(requires glfw, OpenGL, etc)" OFF)
+option(TINYGLTF_BUILD_VALIDATOR_EXAMPLE "Build validator exampe" OFF)
+option(TINYGLTF_BUILD_BUILDER_EXAMPLE "Build glTF builder example" OFF)
+option(TINYGLTF_HEADER_ONLY "On: header-only mode. Off: create tinygltf library(No TINYGLTF_IMPLEMENTATION required in your project)" OFF)
+option(TINYGLTF_INSTALL "Install tinygltf files during install step. Usually set to OFF if you include tinygltf through add_subdirectory()" ON)
+
+if (TINYGLTF_BUILD_LOADER_EXAMPLE)
+  add_executable(loader_example
+    loader_example.cc
+    )
+endif (TINYGLTF_BUILD_LOADER_EXAMPLE)
+
+if (TINYGLTF_BUILD_GL_EXAMPLES)
+  add_subdirectory( examples/gltfutil )
+  add_subdirectory( examples/glview )
+endif (TINYGLTF_BUILD_GL_EXAMPLES)
+
+if (TINYGLTF_BUILD_VALIDATOR_EXAMPLE)
+  add_subdirectory( examples/validator )
+endif (TINYGLTF_BUILD_VALIDATOR_EXAMPLE)
+
+if (TINYGLTF_BUILD_BUILDER_EXAMPLE)
+  add_subdirectory ( examples/build-gltf )
+endif (TINYGLTF_BUILD_BUILDER_EXAMPLE)
+
+#
+# for add_subdirectory and standalone build
+#
+if (TINYGLTF_HEADER_ONLY)
+  add_library(tinygltf INTERFACE)
+
+  target_include_directories(tinygltf
+          INTERFACE
+          $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+          $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+  )
+
+else (TINYGLTF_HEADER_ONLY)
+  add_library(tinygltf)
+  target_sources(tinygltf PRIVATE
+          ${CMAKE_CURRENT_SOURCE_DIR}/tiny_gltf.cc)
+  target_include_directories(tinygltf
+          INTERFACE
+          $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+          $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+          )
+endif (TINYGLTF_HEADER_ONLY)
+
+if (TINYGLTF_INSTALL)
+  install(TARGETS tinygltf EXPORT tinygltfTargets)
+  install(EXPORT tinygltfTargets NAMESPACE tinygltf:: FILE TinyGLTFTargets.cmake DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake)
+  configure_package_config_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/TinyGLTFConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/TinyGLTFConfig.cmake INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/TinyGLTFConfig.cmake DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake)
+  # Do not install .lib even if !TINYGLTF_HEADER_ONLY
+
+  INSTALL ( FILES
+    json.hpp
+    stb_image.h
+    stb_image_write.h
+    tiny_gltf.h
+    ${TINYGLTF_EXTRA_SOUECES}
+    DESTINATION
+    include
+    )
+
+endif(TINYGLTF_INSTALL)
--- a/source/lib/tinygltf/LICENSE
+++ b/source/lib/tinygltf/LICENSE
@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Syoyo Fujita, Aurélien Chatelain and many contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/source/lib/tinygltf/Makefile
+++ b/source/lib/tinygltf/Makefile
@ -0,0 +1,13 @@
+
+# Use this for strict compilation check(will work on clang 3.8+)
+#EXTRA_CXXFLAGS := -fsanitize=address -Wall -Werror -Weverything -Wno-c++11-long-long -Wno-c++98-compat
+
+# With draco
+# EXTRA_CXXFLAGS := -I../draco/src/ -I../draco/build -DTINYGLTF_ENABLE_DRACO -L../draco/build
+# EXTRA_LINKFLAGS := -L../draco/build/ -ldracodec -ldraco
+
+all:
+	clang++  $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o loader_example loader_example.cc $(EXTRA_LINKFLAGS)
+
+lint:
+	deps/cpplint.py tiny_gltf.h
--- a/source/lib/tinygltf/README.md
+++ b/source/lib/tinygltf/README.md
@ -0,0 +1,269 @@
+# Header only C++ tiny glTF library(loader/saver).
+
+`TinyGLTF` is a header only C++11 glTF 2.0 https://github.com/KhronosGroup/glTF library.
+
+`TinyGLTF` uses Niels Lohmann's json library (https://github.com/nlohmann/json), so now it requires C++11 compiler.
+(Also, you can use RadpidJSON as an JSON backend)
+If you are looking for old, C++03 version, please use `devel-picojson` branch (but not maintained anymore).
+
+## Status
+
+Currently TinyGLTF is stable and maintenance mode. No drastic changes and feature additions planned.
+
+ - v2.8.0 Add URICallbacks for custom URI handling in Buffer and Image. PR#397
+ - v2.7.0 Change WriteImageDataFunction user callback function signature. PR#393
+ - v2.6.0 Support serializing sparse accessor(Thanks to @fynv).
+ - v2.5.0 Add SetPreserveImageChannels() option to load image data as is.
+ - v2.4.0 Experimental RapidJSON support. Experimental C++14 support(C++14 may give better performance)
+ - v2.3.0 Modified Material representation according to glTF 2.0 schema(and introduced TextureInfo class)
+ - v2.2.0 release(Support loading 16bit PNG. Sparse accessor support)
+ - v2.1.0 release(Draco decoding support)
+ - v2.0.0 release(22 Aug, 2018)!
+
+### Branches
+
+* `sajson` : Use sajson to parse JSON. Parsing only but faster compile time(2x reduction compared to json.hpp and RapidJson), but not well maintained.
+
+## Builds
+
+[![Build Status](https://travis-ci.org/syoyo/tinygltf.svg?branch=devel)](https://travis-ci.org/syoyo/tinygltf)
+
+[![Build status](https://ci.appveyor.com/api/projects/status/warngenu9wjjhlm8?svg=true)](https://ci.appveyor.com/project/syoyo/tinygltf)
+
+![C/C++ CI](https://github.com/syoyo/tinygltf/workflows/C/C++%20CI/badge.svg)
+
+## Features
+
+Probably mostly feature-complete. Last missing feature is Draco encoding: https://github.com/syoyo/tinygltf/issues/207
+
+* Written in portable C++. C++-11 with STL dependency only.
+  * [x] macOS + clang(LLVM)
+  * [x] iOS + clang
+  * [x] Linux + gcc/clang
+  * [x] Windows + MinGW
+  * [x] Windows + Visual Studio 2015 Update 3 or later.
+    * Visual Studio 2013 is not supported since they have limited C++11 support and failed to compile `json.hpp`.
+  * [x] Android NDK
+  * [x] Android + CrystaX(NDK drop-in replacement) GCC
+  * [x] Web using Emscripten(LLVM)
+* Moderate parsing time and memory consumption.
+* glTF specification v2.0.0
+  * [x] ASCII glTF
+    * [x] Load
+    * [x] Save
+  * [x] Binary glTF(GLB)
+    * [x] Load
+    * [x] Save(.bin embedded .glb)
+* Buffers
+  * [x] Parse BASE64 encoded embedded buffer data(DataURI).
+  * [x] Load `.bin` file.
+* Image(Using stb_image)
+  * [x] Parse BASE64 encoded embedded image data(DataURI).
+  * [x] Load external image file.
+  * [x] Load PNG(8bit and 16bit)
+  * [x] Load JPEG(8bit only)
+  * [x] Load BMP
+  * [x] Load GIF
+  * [x] Custom Image decoder callback(e.g. for decoding OpenEXR image)
+* Morph traget
+  * [x] Sparse accessor
+* Load glTF from memory
+* Custom callback handler
+  * [x] Image load
+  * [x] Image save
+* Extensions
+  * [x] Draco mesh decoding
+  * [ ] Draco mesh encoding
+
+## Note on extension property
+
+In extension(`ExtensionMap`), JSON number value is parsed as int or float(number) and stored as `tinygltf::Value` object. If you want a floating point value from `tinygltf::Value`, use `GetNumberAsDouble()` method.
+
+`IsNumber()` returns true if the underlying value is an int value or a floating point value.
+
+## Examples
+
+* [glview](examples/glview) : Simple glTF geometry viewer.
+* [validator](examples/validator) : Simple glTF validator with JSON schema.
+* [basic](examples/basic) : Basic glTF viewer with texturing support.
+* [build-gltf](examples/build-gltf) : Build simple glTF scene from a scratch.
+
+### WASI/WASM build
+
+Users who want to run TinyGLTF securely and safely(e.g. need to handle malcious glTF file to serve online glTF conver),
+I recommend to build TinyGLTF for WASM target.
+WASI build example is located in [wasm](wasm) .
+
+## Projects using TinyGLTF
+
+* px_render Single header C++ Libraries for Thread Scheduling, Rendering, and so on... https://github.com/pplux/px
+* Physical based rendering with Vulkan using glTF 2.0 models https://github.com/SaschaWillems/Vulkan-glTF-PBR
+* GLTF loader plugin for OGRE 2.1. Support for PBR materials via HLMS/PBS https://github.com/Ybalrid/Ogre_glTF
+* [TinyGltfImporter](http://doc.magnum.graphics/magnum/classMagnum_1_1Trade_1_1TinyGltfImporter.html) plugin for [Magnum](https://github.com/mosra/magnum), a lightweight and modular C++11/C++14 graphics middleware for games and data visualization.
+* [Diligent Engine](https://github.com/DiligentGraphics/DiligentEngine) - A modern cross-platform low-level graphics library and rendering framework
+* Lighthouse 2: a rendering framework for real-time ray tracing / path tracing experiments. https://github.com/jbikker/lighthouse2
+* [QuickLook GLTF](https://github.com/toshiks/glTF-quicklook) - quicklook plugin for macos. Also SceneKit wrapper for tinygltf.
+* [GlslViewer](https://github.com/patriciogonzalezvivo/glslViewer) - live GLSL coding for MacOS and Linux
+* [Vulkan-Samples](https://github.com/KhronosGroup/Vulkan-Samples) - The Vulkan Samples is collection of resources to help you develop optimized Vulkan applications.
+* [TDME2](https://github.com/andreasdr/tdme2) - TDME2 - ThreeDeeMiniEngine2 is a lightweight 3D engine including tools suited for 3D game development using C++11
+* [SanityEngine](https://github.com/DethRaid/SanityEngine) - A C++/D3D12 renderer focused on the personal and professional development of its developer
+* [Open3D](http://www.open3d.org/) - A Modern Library for 3D Data Processing
+* [Supernova Engine](https://github.com/supernovaengine/supernova) - Game engine for 2D and 3D projects with Lua or C++ in data oriented design.
+* [Wicked Engine<img src="https://github.com/turanszkij/WickedEngine/blob/master/Content/logo_small.png" width="28px" align="center"/>](https://github.com/turanszkij/WickedEngine) - 3D engine with modern graphics 
+* Your projects here! (Please send PR)
+
+## TODOs
+
+* [ ] Robust URI decoding/encoding. https://github.com/syoyo/tinygltf/issues/369
+* [ ] Mesh Compression/decompression(Open3DGC, etc)
+  * [x] Load Draco compressed mesh
+  * [ ] Save Draco compressed mesh
+  * [ ] Open3DGC?
+* [x] Support `extensions` and `extras` property
+* [ ] HDR image?
+  * [ ] OpenEXR extension through TinyEXR.
+* [ ] 16bit PNG support in Serialization
+* [ ] Write example and tests for `animation` and `skin`
+
+### Optional
+
+* [ ] Write C++ code generator which emits C++ code from JSON schema for robust parsing?
+
+## Licenses
+
+TinyGLTF is licensed under MIT license.
+
+TinyGLTF uses the following third party libraries.
+
+* json.hpp : Copyright (c) 2013-2017 Niels Lohmann. MIT license.
+* base64 : Copyright (C) 2004-2008 René Nyffenegger
+* stb_image.h : v2.08 - public domain image loader - [Github link](https://github.com/nothings/stb/blob/master/stb_image.h)
+* stb_image_write.h : v1.09 - public domain image writer - [Github link](https://github.com/nothings/stb/blob/master/stb_image_write.h)
+
+
+## Build and example
+
+Copy `stb_image.h`, `stb_image_write.h`, `json.hpp` and `tiny_gltf.h` to your project.
+
+### Loading glTF 2.0 model
+
+```c++
+// Define these only in *one* .cc file.
+#define TINYGLTF_IMPLEMENTATION
+#define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+// #define TINYGLTF_NOEXCEPTION // optional. disable exception handling.
+#include "tiny_gltf.h"
+
+using namespace tinygltf;
+
+Model model;
+TinyGLTF loader;
+std::string err;
+std::string warn;
+
+bool ret = loader.LoadASCIIFromFile(&model, &err, &warn, argv[1]);
+//bool ret = loader.LoadBinaryFromFile(&model, &err, &warn, argv[1]); // for binary glTF(.glb)
+
+if (!warn.empty()) {
+  printf("Warn: %s\n", warn.c_str());
+}
+
+if (!err.empty()) {
+  printf("Err: %s\n", err.c_str());
+}
+
+if (!ret) {
+  printf("Failed to parse glTF\n");
+  return -1;
+}
+```
+
+#### Loader options
+
+* `TinyGLTF::SetPreserveimageChannels(bool onoff)`. `true` to preserve image channels as stored in image file for loaded image. `false` by default for backward compatibility(image channels are widen to `RGBA` 4 channels). Effective only when using builtin image loader(STB image loader).
+
+## Compile options
+
+* `TINYGLTF_NOEXCEPTION` : Disable C++ exception in JSON parsing. You can use `-fno-exceptions` or by defining the symbol `JSON_NOEXCEPTION` and `TINYGLTF_NOEXCEPTION`  to fully remove C++ exception codes when compiling TinyGLTF.
+* `TINYGLTF_NO_STB_IMAGE` : Do not load images with stb_image. Instead use `TinyGLTF::SetImageLoader(LoadimageDataFunction LoadImageData, void *user_data)` to set a callback for loading images.
+* `TINYGLTF_NO_STB_IMAGE_WRITE` : Do not write images with stb_image_write. Instead use `TinyGLTF::SetImageWriter(WriteimageDataFunction WriteImageData, void *user_data)` to set a callback for writing images.
+* `TINYGLTF_NO_EXTERNAL_IMAGE` : Do not try to load external image file. This option would be helpful if you do not want to load image files during glTF parsing.
+* `TINYGLTF_ANDROID_LOAD_FROM_ASSETS`: Load all files from packaged app assets instead of the regular file system. **Note:** You must pass a valid asset manager from your android app to `tinygltf::asset_manager` beforehand.
+* `TINYGLTF_ENABLE_DRACO`: Enable Draco compression. User must provide include path and link correspnding libraries in your project file.
+* `TINYGLTF_NO_INCLUDE_JSON `: Disable including `json.hpp` from within `tiny_gltf.h` because it has been already included before or you want to include it using custom path before including `tiny_gltf.h`.
+* `TINYGLTF_NO_INCLUDE_RAPIDJSON `: Disable including RapidJson's header files from within `tiny_gltf.h` because it has been already included before or you want to include it using custom path before including `tiny_gltf.h`.
+* `TINYGLTF_NO_INCLUDE_STB_IMAGE `: Disable including `stb_image.h` from within `tiny_gltf.h` because it has been already included before or you want to include it using custom path before including `tiny_gltf.h`.
+* `TINYGLTF_NO_INCLUDE_STB_IMAGE_WRITE `: Disable including `stb_image_write.h` from within `tiny_gltf.h` because it has been already included before or you want to include it using custom path before including `tiny_gltf.h`.
+* `TINYGLTF_USE_RAPIDJSON` : Use RapidJSON as a JSON parser/serializer. RapidJSON files are not included in TinyGLTF repo. Please set an include path to RapidJSON if you enable this feature.
+* `TINYGLTF_USE_CPP14` : Use C++14 feature(requires C++14 compiler). This may give better performance than C++11.
+
+
+## CMake options
+
+You can add tinygltf using `add_subdirectory` feature.
+If you add tinygltf to your project using `add_subdirectory`, it would be better to set `TINYGLTF_HEADER_ONLY` on(just add an include path to tinygltf) and `TINYGLTF_INSTALL` off(Which does not install tinygltf files).
+
+```
+// Your project's CMakeLists.txt
+...
+
+set(TINYGLTF_HEADER_ONLY ON CACHE INTERNAL "" FORCE)
+set(TINYGLTF_INSTALL OFF CACHE INTERNAL "" FORCE)
+add_subdirectory(/path/to/tinygltf)
+```
+
+
+### Saving gltTF 2.0 model
+
+* Buffers.
+  * [x] To file
+  * [x] Embedded
+  * [ ] Draco compressed?
+* [x] Images
+  * [x] To file
+  * [x] Embedded
+* Binary(.glb)
+  * [x] .bin embedded single .glb
+  * [ ] External .bin
+
+## Running tests.
+
+### glTF parsing test
+
+#### Setup
+
+Python required.
+Git clone https://github.com/KhronosGroup/glTF-Sample-Models to your local dir.
+
+#### Run parsing test
+
+After building `loader_example`, edit `test_runner.py`, then,
+
+```bash
+$ python test_runner.py
+```
+
+### Unit tests
+
+```bash
+$ cd tests
+$ make
+$ ./tester
+$ ./tester_noexcept
+```
+
+### Fuzzing tests
+
+See `tests/fuzzer` for details.
+
+After running fuzzer on Ryzen9 3950X a week, at least `LoadASCIIFromString` looks safe except for out-of-memory error in Fuzzer.
+We may be better to introduce bounded memory size checking when parsing glTF data.
+
+## Third party licenses
+
+* json.hpp : Licensed under the MIT License <http://opensource.org/licenses/MIT>. Copyright (c) 2013-2017 Niels Lohmann <http://nlohmann.me>.
+* stb_image : Public domain.
+* catch : Copyright (c) 2012 Two Blue Cubes Ltd. All rights reserved. Distributed under the Boost Software License, Version 1.0.
+* RapidJSON : Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved. http://rapidjson.org/
+* dlib(uridecode, uriencode) : Copyright (C) 2003  Davis E. King Boost Software License 1.0. http://dlib.net/dlib/server/server_http.cpp.html
--- a/source/lib/tinygltf/appveyor.yml
+++ b/source/lib/tinygltf/appveyor.yml
@ -0,0 +1,18 @@
+version: 0.9.{build}
+
+image:
+  - Visual Studio 2015
+
+# scripts that runs after repo cloning.
+install:
+  - vcsetup.bat
+
+platform: x64
+configuration: Release
+
+build:
+  parallel: true
+  project: TinyGLTFSolution.sln
+
+after_build:
+  - examples.bat
--- a/source/lib/tinygltf/cmake/TinyGLTFConfig.cmake.in
+++ b/source/lib/tinygltf/cmake/TinyGLTFConfig.cmake.in
@ -0,0 +1,3 @@
+@PACKAGE_INIT@
+
+include(${CMAKE_CURRENT_LIST_DIR}/TinyGLTFTargets.cmake)
--- a/source/lib/tinygltf/deps/cpplint.py
+++ b/source/lib/tinygltf/deps/cpplint.py
--- a/source/lib/tinygltf/examples.bat
+++ b/source/lib/tinygltf/examples.bat
@ -0,0 +1,3 @@
+  cd examples\raytrace
+  ..\..\tools\windows\premake5.exe vs2015
+  msbuild NanoSGSolution.sln /property:Configuration=Release
--- a/source/lib/tinygltf/json.hpp
+++ b/source/lib/tinygltf/json.hpp
--- a/source/lib/tinygltf/loader_example.cc
+++ b/source/lib/tinygltf/loader_example.cc
@ -0,0 +1,906 @@
+//
+// TODO(syoyo): Print extensions and extras for each glTF object.
+//
+#define TINYGLTF_IMPLEMENTATION
+#define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "tiny_gltf.h"
+
+#include <cstdio>
+#include <fstream>
+#include <iostream>
+
+static std::string GetFilePathExtension(const std::string &FileName) {
+  if (FileName.find_last_of(".") != std::string::npos)
+    return FileName.substr(FileName.find_last_of(".") + 1);
+  return "";
+}
+
+static std::string PrintMode(int mode) {
+  if (mode == TINYGLTF_MODE_POINTS) {
+    return "POINTS";
+  } else if (mode == TINYGLTF_MODE_LINE) {
+    return "LINE";
+  } else if (mode == TINYGLTF_MODE_LINE_LOOP) {
+    return "LINE_LOOP";
+  } else if (mode == TINYGLTF_MODE_TRIANGLES) {
+    return "TRIANGLES";
+  } else if (mode == TINYGLTF_MODE_TRIANGLE_FAN) {
+    return "TRIANGLE_FAN";
+  } else if (mode == TINYGLTF_MODE_TRIANGLE_STRIP) {
+    return "TRIANGLE_STRIP";
+  }
+  return "**UNKNOWN**";
+}
+
+static std::string PrintTarget(int target) {
+  if (target == 34962) {
+    return "GL_ARRAY_BUFFER";
+  } else if (target == 34963) {
+    return "GL_ELEMENT_ARRAY_BUFFER";
+  } else {
+    return "**UNKNOWN**";
+  }
+}
+
+static std::string PrintType(int ty) {
+  if (ty == TINYGLTF_TYPE_SCALAR) {
+    return "SCALAR";
+  } else if (ty == TINYGLTF_TYPE_VECTOR) {
+    return "VECTOR";
+  } else if (ty == TINYGLTF_TYPE_VEC2) {
+    return "VEC2";
+  } else if (ty == TINYGLTF_TYPE_VEC3) {
+    return "VEC3";
+  } else if (ty == TINYGLTF_TYPE_VEC4) {
+    return "VEC4";
+  } else if (ty == TINYGLTF_TYPE_MATRIX) {
+    return "MATRIX";
+  } else if (ty == TINYGLTF_TYPE_MAT2) {
+    return "MAT2";
+  } else if (ty == TINYGLTF_TYPE_MAT3) {
+    return "MAT3";
+  } else if (ty == TINYGLTF_TYPE_MAT4) {
+    return "MAT4";
+  }
+  return "**UNKNOWN**";
+}
+
+static std::string PrintComponentType(int ty) {
+  if (ty == TINYGLTF_COMPONENT_TYPE_BYTE) {
+    return "BYTE";
+  } else if (ty == TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE) {
+    return "UNSIGNED_BYTE";
+  } else if (ty == TINYGLTF_COMPONENT_TYPE_SHORT) {
+    return "SHORT";
+  } else if (ty == TINYGLTF_COMPONENT_TYPE_UNSIGNED_SHORT) {
+    return "UNSIGNED_SHORT";
+  } else if (ty == TINYGLTF_COMPONENT_TYPE_INT) {
+    return "INT";
+  } else if (ty == TINYGLTF_COMPONENT_TYPE_UNSIGNED_INT) {
+    return "UNSIGNED_INT";
+  } else if (ty == TINYGLTF_COMPONENT_TYPE_FLOAT) {
+    return "FLOAT";
+  } else if (ty == TINYGLTF_COMPONENT_TYPE_DOUBLE) {
+    return "DOUBLE";
+  }
+
+  return "**UNKNOWN**";
+}
+
+#if 0
+static std::string PrintParameterType(int ty) {
+  if (ty == TINYGLTF_PARAMETER_TYPE_BYTE) {
+    return "BYTE";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_UNSIGNED_BYTE) {
+    return "UNSIGNED_BYTE";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_SHORT) {
+    return "SHORT";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_UNSIGNED_SHORT) {
+    return "UNSIGNED_SHORT";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_INT) {
+    return "INT";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_UNSIGNED_INT) {
+    return "UNSIGNED_INT";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_FLOAT) {
+    return "FLOAT";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_FLOAT_VEC2) {
+    return "FLOAT_VEC2";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_FLOAT_VEC3) {
+    return "FLOAT_VEC3";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_FLOAT_VEC4) {
+    return "FLOAT_VEC4";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_INT_VEC2) {
+    return "INT_VEC2";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_INT_VEC3) {
+    return "INT_VEC3";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_INT_VEC4) {
+    return "INT_VEC4";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_BOOL) {
+    return "BOOL";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_BOOL_VEC2) {
+    return "BOOL_VEC2";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_BOOL_VEC3) {
+    return "BOOL_VEC3";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_BOOL_VEC4) {
+    return "BOOL_VEC4";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_FLOAT_MAT2) {
+    return "FLOAT_MAT2";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_FLOAT_MAT3) {
+    return "FLOAT_MAT3";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_FLOAT_MAT4) {
+    return "FLOAT_MAT4";
+  } else if (ty == TINYGLTF_PARAMETER_TYPE_SAMPLER_2D) {
+    return "SAMPLER_2D";
+  }
+
+  return "**UNKNOWN**";
+}
+#endif
+
+static std::string PrintWrapMode(int mode) {
+  if (mode == TINYGLTF_TEXTURE_WRAP_REPEAT) {
+    return "REPEAT";
+  } else if (mode == TINYGLTF_TEXTURE_WRAP_CLAMP_TO_EDGE) {
+    return "CLAMP_TO_EDGE";
+  } else if (mode == TINYGLTF_TEXTURE_WRAP_MIRRORED_REPEAT) {
+    return "MIRRORED_REPEAT";
+  }
+
+  return "**UNKNOWN**";
+}
+
+static std::string PrintFilterMode(int mode) {
+  if (mode == TINYGLTF_TEXTURE_FILTER_NEAREST) {
+    return "NEAREST";
+  } else if (mode == TINYGLTF_TEXTURE_FILTER_LINEAR) {
+    return "LINEAR";
+  } else if (mode == TINYGLTF_TEXTURE_FILTER_NEAREST_MIPMAP_NEAREST) {
+    return "NEAREST_MIPMAP_NEAREST";
+  } else if (mode == TINYGLTF_TEXTURE_FILTER_NEAREST_MIPMAP_LINEAR) {
+    return "NEAREST_MIPMAP_LINEAR";
+  } else if (mode == TINYGLTF_TEXTURE_FILTER_LINEAR_MIPMAP_NEAREST) {
+    return "LINEAR_MIPMAP_NEAREST";
+  } else if (mode == TINYGLTF_TEXTURE_FILTER_LINEAR_MIPMAP_LINEAR) {
+    return "LINEAR_MIPMAP_LINEAR";
+  }
+  return "**UNKNOWN**";
+}
+
+static std::string PrintIntArray(const std::vector<int> &arr) {
+  if (arr.size() == 0) {
+    return "";
+  }
+
+  std::stringstream ss;
+  ss << "[ ";
+  for (size_t i = 0; i < arr.size(); i++) {
+    ss << arr[i];
+    if (i != arr.size() - 1) {
+      ss << ", ";
+    }
+  }
+  ss << " ]";
+
+  return ss.str();
+}
+
+static std::string PrintFloatArray(const std::vector<double> &arr) {
+  if (arr.size() == 0) {
+    return "";
+  }
+
+  std::stringstream ss;
+  ss << "[ ";
+  for (size_t i = 0; i < arr.size(); i++) {
+    ss << arr[i];
+    if (i != arr.size() - 1) {
+      ss << ", ";
+    }
+  }
+  ss << " ]";
+
+  return ss.str();
+}
+
+static std::string Indent(const int indent) {
+  std::string s;
+  for (int i = 0; i < indent; i++) {
+    s += "  ";
+  }
+
+  return s;
+}
+
+static std::string PrintParameterValue(const tinygltf::Parameter &param) {
+  if (!param.number_array.empty()) {
+    return PrintFloatArray(param.number_array);
+  } else {
+    return param.string_value;
+  }
+}
+
+#if 0
+static std::string PrintParameterMap(const tinygltf::ParameterMap &pmap) {
+  std::stringstream ss;
+
+  ss << pmap.size() << std::endl;
+  for (auto &kv : pmap) {
+    ss << kv.first << " : " << PrintParameterValue(kv.second) << std::endl;
+  }
+
+  return ss.str();
+}
+#endif
+
+static std::string PrintValue(const std::string &name,
+                              const tinygltf::Value &value, const int indent,
+                              const bool tag = true) {
+  std::stringstream ss;
+
+  if (value.IsObject()) {
+    const tinygltf::Value::Object &o = value.Get<tinygltf::Value::Object>();
+    tinygltf::Value::Object::const_iterator it(o.begin());
+    tinygltf::Value::Object::const_iterator itEnd(o.end());
+    for (; it != itEnd; it++) {
+      ss << PrintValue(it->first, it->second, indent + 1) << std::endl;
+    }
+  } else if (value.IsString()) {
+    if (tag) {
+      ss << Indent(indent) << name << " : " << value.Get<std::string>();
+    } else {
+      ss << Indent(indent) << value.Get<std::string>() << " ";
+    }
+  } else if (value.IsBool()) {
+    if (tag) {
+      ss << Indent(indent) << name << " : " << value.Get<bool>();
+    } else {
+      ss << Indent(indent) << value.Get<bool>() << " ";
+    }
+  } else if (value.IsNumber()) {
+    if (tag) {
+      ss << Indent(indent) << name << " : " << value.Get<double>();
+    } else {
+      ss << Indent(indent) << value.Get<double>() << " ";
+    }
+  } else if (value.IsInt()) {
+    if (tag) {
+      ss << Indent(indent) << name << " : " << value.Get<int>();
+    } else {
+      ss << Indent(indent) << value.Get<int>() << " ";
+    }
+  } else if (value.IsArray()) {
+    // TODO(syoyo): Better pretty printing of array item
+    ss << Indent(indent) << name << " [ \n";
+    for (size_t i = 0; i < value.Size(); i++) {
+      ss << PrintValue("", value.Get(int(i)), indent + 1, /* tag */ false);
+      if (i != (value.ArrayLen() - 1)) {
+        ss << ", \n";
+      }
+    }
+    ss << "\n" << Indent(indent) << "] ";
+  }
+
+  // @todo { binary }
+
+  return ss.str();
+}
+
+static void DumpNode(const tinygltf::Node &node, int indent) {
+  std::cout << Indent(indent) << "name        : " << node.name << std::endl;
+  std::cout << Indent(indent) << "camera      : " << node.camera << std::endl;
+  std::cout << Indent(indent) << "mesh        : " << node.mesh << std::endl;
+  if (!node.rotation.empty()) {
+    std::cout << Indent(indent)
+              << "rotation    : " << PrintFloatArray(node.rotation)
+              << std::endl;
+  }
+  if (!node.scale.empty()) {
+    std::cout << Indent(indent)
+              << "scale       : " << PrintFloatArray(node.scale) << std::endl;
+  }
+  if (!node.translation.empty()) {
+    std::cout << Indent(indent)
+              << "translation : " << PrintFloatArray(node.translation)
+              << std::endl;
+  }
+
+  if (!node.matrix.empty()) {
+    std::cout << Indent(indent)
+              << "matrix      : " << PrintFloatArray(node.matrix) << std::endl;
+  }
+
+  std::cout << Indent(indent)
+            << "children    : " << PrintIntArray(node.children) << std::endl;
+}
+
+static void DumpStringIntMap(const std::map<std::string, int> &m, int indent) {
+  std::map<std::string, int>::const_iterator it(m.begin());
+  std::map<std::string, int>::const_iterator itEnd(m.end());
+  for (; it != itEnd; it++) {
+    std::cout << Indent(indent) << it->first << ": " << it->second << std::endl;
+  }
+}
+
+static void DumpExtensions(const tinygltf::ExtensionMap &extension,
+                           const int indent) {
+  // TODO(syoyo): pritty print Value
+  for (auto &e : extension) {
+    std::cout << Indent(indent) << e.first << std::endl;
+    std::cout << PrintValue("extensions", e.second, indent + 1) << std::endl;
+  }
+}
+
+static void DumpPrimitive(const tinygltf::Primitive &primitive, int indent) {
+  std::cout << Indent(indent) << "material : " << primitive.material
+            << std::endl;
+  std::cout << Indent(indent) << "indices : " << primitive.indices << std::endl;
+  std::cout << Indent(indent) << "mode     : " << PrintMode(primitive.mode)
+            << "(" << primitive.mode << ")" << std::endl;
+  std::cout << Indent(indent)
+            << "attributes(items=" << primitive.attributes.size() << ")"
+            << std::endl;
+  DumpStringIntMap(primitive.attributes, indent + 1);
+
+  DumpExtensions(primitive.extensions, indent);
+  std::cout << Indent(indent) << "extras :" << std::endl
+            << PrintValue("extras", primitive.extras, indent + 1) << std::endl;
+
+  if (!primitive.extensions_json_string.empty()) {
+    std::cout << Indent(indent + 1) << "extensions(JSON string) = "
+              << primitive.extensions_json_string << "\n";
+  }
+
+  if (!primitive.extras_json_string.empty()) {
+    std::cout << Indent(indent + 1)
+              << "extras(JSON string) = " << primitive.extras_json_string
+              << "\n";
+  }
+}
+
+
+static void DumpTextureInfo(const tinygltf::TextureInfo &texinfo,
+                            const int indent) {
+  std::cout << Indent(indent) << "index     : " << texinfo.index << "\n";
+  std::cout << Indent(indent) << "texCoord  : TEXCOORD_" << texinfo.texCoord
+            << "\n";
+  DumpExtensions(texinfo.extensions, indent + 1);
+  std::cout << PrintValue("extras", texinfo.extras, indent + 1) << "\n";
+
+  if (!texinfo.extensions_json_string.empty()) {
+    std::cout << Indent(indent)
+              << "extensions(JSON string) = " << texinfo.extensions_json_string
+              << "\n";
+  }
+
+  if (!texinfo.extras_json_string.empty()) {
+    std::cout << Indent(indent)
+              << "extras(JSON string) = " << texinfo.extras_json_string << "\n";
+  }
+}
+
+static void DumpNormalTextureInfo(const tinygltf::NormalTextureInfo &texinfo,
+                                  const int indent) {
+  std::cout << Indent(indent) << "index     : " << texinfo.index << "\n";
+  std::cout << Indent(indent) << "texCoord  : TEXCOORD_" << texinfo.texCoord
+            << "\n";
+  std::cout << Indent(indent) << "scale     : " << texinfo.scale << "\n";
+  DumpExtensions(texinfo.extensions, indent + 1);
+  std::cout << PrintValue("extras", texinfo.extras, indent + 1) << "\n";
+}
+
+static void DumpOcclusionTextureInfo(
+    const tinygltf::OcclusionTextureInfo &texinfo, const int indent) {
+  std::cout << Indent(indent) << "index     : " << texinfo.index << "\n";
+  std::cout << Indent(indent) << "texCoord  : TEXCOORD_" << texinfo.texCoord
+            << "\n";
+  std::cout << Indent(indent) << "strength  : " << texinfo.strength << "\n";
+  DumpExtensions(texinfo.extensions, indent + 1);
+  std::cout << PrintValue("extras", texinfo.extras, indent + 1) << "\n";
+}
+
+static void DumpPbrMetallicRoughness(const tinygltf::PbrMetallicRoughness &pbr,
+                                     const int indent) {
+  std::cout << Indent(indent)
+            << "baseColorFactor   : " << PrintFloatArray(pbr.baseColorFactor)
+            << "\n";
+  std::cout << Indent(indent) << "baseColorTexture  :\n";
+  DumpTextureInfo(pbr.baseColorTexture, indent + 1);
+
+  std::cout << Indent(indent) << "metallicFactor    : " << pbr.metallicFactor
+            << "\n";
+  std::cout << Indent(indent) << "roughnessFactor   : " << pbr.roughnessFactor
+            << "\n";
+
+  std::cout << Indent(indent) << "metallicRoughnessTexture  :\n";
+  DumpTextureInfo(pbr.metallicRoughnessTexture, indent + 1);
+  DumpExtensions(pbr.extensions, indent + 1);
+  std::cout << PrintValue("extras", pbr.extras, indent + 1) << "\n";
+}
+
+static void Dump(const tinygltf::Model &model) {
+  std::cout << "=== Dump glTF ===" << std::endl;
+  std::cout << "asset.copyright          : " << model.asset.copyright
+            << std::endl;
+  std::cout << "asset.generator          : " << model.asset.generator
+            << std::endl;
+  std::cout << "asset.version            : " << model.asset.version
+            << std::endl;
+  std::cout << "asset.minVersion         : " << model.asset.minVersion
+            << std::endl;
+  std::cout << std::endl;
+
+  std::cout << "=== Dump scene ===" << std::endl;
+  std::cout << "defaultScene: " << model.defaultScene << std::endl;
+
+  {
+    std::cout << "scenes(items=" << model.scenes.size() << ")" << std::endl;
+    for (size_t i = 0; i < model.scenes.size(); i++) {
+      std::cout << Indent(1) << "scene[" << i
+                << "] name  : " << model.scenes[i].name << std::endl;
+      DumpExtensions(model.scenes[i].extensions, 1);
+    }
+  }
+
+  {
+    std::cout << "meshes(item=" << model.meshes.size() << ")" << std::endl;
+    for (size_t i = 0; i < model.meshes.size(); i++) {
+      std::cout << Indent(1) << "name     : " << model.meshes[i].name
+                << std::endl;
+      std::cout << Indent(1)
+                << "primitives(items=" << model.meshes[i].primitives.size()
+                << "): " << std::endl;
+
+      for (size_t k = 0; k < model.meshes[i].primitives.size(); k++) {
+        DumpPrimitive(model.meshes[i].primitives[k], 2);
+      }
+    }
+  }
+
+  {
+    for (size_t i = 0; i < model.accessors.size(); i++) {
+      const tinygltf::Accessor &accessor = model.accessors[i];
+      std::cout << Indent(1) << "name         : " << accessor.name << std::endl;
+      std::cout << Indent(2) << "bufferView   : " << accessor.bufferView
+                << std::endl;
+      std::cout << Indent(2) << "byteOffset   : " << accessor.byteOffset
+                << std::endl;
+      std::cout << Indent(2) << "componentType: "
+                << PrintComponentType(accessor.componentType) << "("
+                << accessor.componentType << ")" << std::endl;
+      std::cout << Indent(2) << "count        : " << accessor.count
+                << std::endl;
+      std::cout << Indent(2) << "type         : " << PrintType(accessor.type)
+                << std::endl;
+      if (!accessor.minValues.empty()) {
+        std::cout << Indent(2) << "min          : [";
+        for (size_t k = 0; k < accessor.minValues.size(); k++) {
+          std::cout << accessor.minValues[k]
+                    << ((k != accessor.minValues.size() - 1) ? ", " : "");
+        }
+        std::cout << "]" << std::endl;
+      }
+      if (!accessor.maxValues.empty()) {
+        std::cout << Indent(2) << "max          : [";
+        for (size_t k = 0; k < accessor.maxValues.size(); k++) {
+          std::cout << accessor.maxValues[k]
+                    << ((k != accessor.maxValues.size() - 1) ? ", " : "");
+        }
+        std::cout << "]" << std::endl;
+      }
+
+      if (accessor.sparse.isSparse) {
+        std::cout << Indent(2) << "sparse:" << std::endl;
+        std::cout << Indent(3) << "count  : " << accessor.sparse.count
+                  << std::endl;
+        std::cout << Indent(3) << "indices: " << std::endl;
+        std::cout << Indent(4)
+                  << "bufferView   : " << accessor.sparse.indices.bufferView
+                  << std::endl;
+        std::cout << Indent(4)
+                  << "byteOffset   : " << accessor.sparse.indices.byteOffset
+                  << std::endl;
+        std::cout << Indent(4) << "componentType: "
+                  << PrintComponentType(accessor.sparse.indices.componentType)
+                  << "(" << accessor.sparse.indices.componentType << ")"
+                  << std::endl;
+        std::cout << Indent(3) << "values : " << std::endl;
+        std::cout << Indent(4)
+                  << "bufferView   : " << accessor.sparse.values.bufferView
+                  << std::endl;
+        std::cout << Indent(4)
+                  << "byteOffset   : " << accessor.sparse.values.byteOffset
+                  << std::endl;
+      }
+    }
+  }
+
+  {
+    std::cout << "animations(items=" << model.animations.size() << ")"
+              << std::endl;
+    for (size_t i = 0; i < model.animations.size(); i++) {
+      const tinygltf::Animation &animation = model.animations[i];
+      std::cout << Indent(1) << "name         : " << animation.name
+                << std::endl;
+
+      std::cout << Indent(1) << "channels : [ " << std::endl;
+      for (size_t j = 0; j < animation.channels.size(); j++) {
+        std::cout << Indent(2)
+                  << "sampler     : " << animation.channels[j].sampler
+                  << std::endl;
+        std::cout << Indent(2)
+                  << "target.id   : " << animation.channels[j].target_node
+                  << std::endl;
+        std::cout << Indent(2)
+                  << "target.path : " << animation.channels[j].target_path
+                  << std::endl;
+        std::cout << ((i != (animation.channels.size() - 1)) ? "  , " : "");
+      }
+      std::cout << "  ]" << std::endl;
+
+      std::cout << Indent(1) << "samplers(items=" << animation.samplers.size()
+                << ")" << std::endl;
+      for (size_t j = 0; j < animation.samplers.size(); j++) {
+        const tinygltf::AnimationSampler &sampler = animation.samplers[j];
+        std::cout << Indent(2) << "input         : " << sampler.input
+                  << std::endl;
+        std::cout << Indent(2) << "interpolation : " << sampler.interpolation
+                  << std::endl;
+        std::cout << Indent(2) << "output        : " << sampler.output
+                  << std::endl;
+      }
+    }
+  }
+
+  {
+    std::cout << "bufferViews(items=" << model.bufferViews.size() << ")"
+              << std::endl;
+    for (size_t i = 0; i < model.bufferViews.size(); i++) {
+      const tinygltf::BufferView &bufferView = model.bufferViews[i];
+      std::cout << Indent(1) << "name         : " << bufferView.name
+                << std::endl;
+      std::cout << Indent(2) << "buffer       : " << bufferView.buffer
+                << std::endl;
+      std::cout << Indent(2) << "byteLength   : " << bufferView.byteLength
+                << std::endl;
+      std::cout << Indent(2) << "byteOffset   : " << bufferView.byteOffset
+                << std::endl;
+      std::cout << Indent(2) << "byteStride   : " << bufferView.byteStride
+                << std::endl;
+      std::cout << Indent(2)
+                << "target       : " << PrintTarget(bufferView.target)
+                << std::endl;
+      std::cout << Indent(1) << "-------------------------------------\n";
+
+      DumpExtensions(bufferView.extensions, 1);
+      std::cout << PrintValue("extras", bufferView.extras, 2) << std::endl;
+
+      if (!bufferView.extensions_json_string.empty()) {
+        std::cout << Indent(2) << "extensions(JSON string) = "
+                  << bufferView.extensions_json_string << "\n";
+      }
+
+      if (!bufferView.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << bufferView.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  {
+    std::cout << "buffers(items=" << model.buffers.size() << ")" << std::endl;
+    for (size_t i = 0; i < model.buffers.size(); i++) {
+      const tinygltf::Buffer &buffer = model.buffers[i];
+      std::cout << Indent(1) << "name         : " << buffer.name << std::endl;
+      std::cout << Indent(2) << "byteLength   : " << buffer.data.size()
+                << std::endl;
+      std::cout << Indent(1) << "-------------------------------------\n";
+
+      DumpExtensions(buffer.extensions, 1);
+      std::cout << PrintValue("extras", buffer.extras, 2) << std::endl;
+
+      if (!buffer.extensions_json_string.empty()) {
+        std::cout << Indent(2) << "extensions(JSON string) = "
+                  << buffer.extensions_json_string << "\n";
+      }
+
+      if (!buffer.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << buffer.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  {
+    std::cout << "materials(items=" << model.materials.size() << ")"
+              << std::endl;
+    for (size_t i = 0; i < model.materials.size(); i++) {
+      const tinygltf::Material &material = model.materials[i];
+      std::cout << Indent(1) << "name                 : " << material.name
+                << std::endl;
+
+      std::cout << Indent(1) << "alphaMode            : " << material.alphaMode
+                << std::endl;
+      std::cout << Indent(1)
+                << "alphaCutoff          : " << material.alphaCutoff
+                << std::endl;
+      std::cout << Indent(1) << "doubleSided          : "
+                << (material.doubleSided ? "true" : "false") << std::endl;
+      std::cout << Indent(1) << "emissiveFactor       : "
+                << PrintFloatArray(material.emissiveFactor) << std::endl;
+
+      std::cout << Indent(1) << "pbrMetallicRoughness :\n";
+      DumpPbrMetallicRoughness(material.pbrMetallicRoughness, 2);
+
+      std::cout << Indent(1) << "normalTexture        :\n";
+      DumpNormalTextureInfo(material.normalTexture, 2);
+
+      std::cout << Indent(1) << "occlusionTexture     :\n";
+      DumpOcclusionTextureInfo(material.occlusionTexture, 2);
+
+      std::cout << Indent(1) << "emissiveTexture      :\n";
+      DumpTextureInfo(material.emissiveTexture, 2);
+
+      std::cout << Indent(1) << "----  legacy material parameter  ----\n";
+      std::cout << Indent(1) << "values(items=" << material.values.size() << ")"
+                << std::endl;
+      tinygltf::ParameterMap::const_iterator p(material.values.begin());
+      tinygltf::ParameterMap::const_iterator pEnd(material.values.end());
+      for (; p != pEnd; p++) {
+        std::cout << Indent(2) << p->first << ": "
+                  << PrintParameterValue(p->second) << std::endl;
+      }
+      std::cout << Indent(1) << "-------------------------------------\n";
+
+      DumpExtensions(material.extensions, 1);
+      std::cout << PrintValue("extras", material.extras, 2) << std::endl;
+
+      if (!material.extensions_json_string.empty()) {
+        std::cout << Indent(2) << "extensions(JSON string) = "
+                  << material.extensions_json_string << "\n";
+      }
+
+      if (!material.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << material.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  {
+    std::cout << "nodes(items=" << model.nodes.size() << ")" << std::endl;
+    for (size_t i = 0; i < model.nodes.size(); i++) {
+      const tinygltf::Node &node = model.nodes[i];
+      std::cout << Indent(1) << "name         : " << node.name << std::endl;
+
+      DumpNode(node, 2);
+    }
+  }
+
+  {
+    std::cout << "images(items=" << model.images.size() << ")" << std::endl;
+    for (size_t i = 0; i < model.images.size(); i++) {
+      const tinygltf::Image &image = model.images[i];
+      std::cout << Indent(1) << "name         : " << image.name << std::endl;
+
+      std::cout << Indent(2) << "width     : " << image.width << std::endl;
+      std::cout << Indent(2) << "height    : " << image.height << std::endl;
+      std::cout << Indent(2) << "component : " << image.component << std::endl;
+      DumpExtensions(image.extensions, 1);
+      std::cout << PrintValue("extras", image.extras, 2) << std::endl;
+
+      if (!image.extensions_json_string.empty()) {
+        std::cout << Indent(2) << "extensions(JSON string) = "
+                  << image.extensions_json_string << "\n";
+      }
+
+      if (!image.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << image.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  {
+    std::cout << "textures(items=" << model.textures.size() << ")" << std::endl;
+    for (size_t i = 0; i < model.textures.size(); i++) {
+      const tinygltf::Texture &texture = model.textures[i];
+      std::cout << Indent(1) << "sampler        : " << texture.sampler
+                << std::endl;
+      std::cout << Indent(1) << "source         : " << texture.source
+                << std::endl;
+      DumpExtensions(texture.extensions, 1);
+      std::cout << PrintValue("extras", texture.extras, 2) << std::endl;
+
+      if (!texture.extensions_json_string.empty()) {
+        std::cout << Indent(2) << "extensions(JSON string) = "
+                  << texture.extensions_json_string << "\n";
+      }
+
+      if (!texture.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << texture.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  {
+    std::cout << "samplers(items=" << model.samplers.size() << ")" << std::endl;
+
+    for (size_t i = 0; i < model.samplers.size(); i++) {
+      const tinygltf::Sampler &sampler = model.samplers[i];
+      std::cout << Indent(1) << "name (id)    : " << sampler.name << std::endl;
+      std::cout << Indent(2)
+                << "minFilter    : " << PrintFilterMode(sampler.minFilter)
+                << std::endl;
+      std::cout << Indent(2)
+                << "magFilter    : " << PrintFilterMode(sampler.magFilter)
+                << std::endl;
+      std::cout << Indent(2)
+                << "wrapS        : " << PrintWrapMode(sampler.wrapS)
+                << std::endl;
+      std::cout << Indent(2)
+                << "wrapT        : " << PrintWrapMode(sampler.wrapT)
+                << std::endl;
+
+      DumpExtensions(sampler.extensions, 1);
+      std::cout << PrintValue("extras", sampler.extras, 2) << std::endl;
+
+      if (!sampler.extensions_json_string.empty()) {
+        std::cout << Indent(2) << "extensions(JSON string) = "
+                  << sampler.extensions_json_string << "\n";
+      }
+
+      if (!sampler.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << sampler.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  {
+    std::cout << "cameras(items=" << model.cameras.size() << ")" << std::endl;
+
+    for (size_t i = 0; i < model.cameras.size(); i++) {
+      const tinygltf::Camera &camera = model.cameras[i];
+      std::cout << Indent(1) << "name (id)    : " << camera.name << std::endl;
+      std::cout << Indent(1) << "type         : " << camera.type << std::endl;
+
+      if (camera.type.compare("perspective") == 0) {
+        std::cout << Indent(2)
+                  << "aspectRatio   : " << camera.perspective.aspectRatio
+                  << std::endl;
+        std::cout << Indent(2) << "yfov          : " << camera.perspective.yfov
+                  << std::endl;
+        std::cout << Indent(2) << "zfar          : " << camera.perspective.zfar
+                  << std::endl;
+        std::cout << Indent(2) << "znear         : " << camera.perspective.znear
+                  << std::endl;
+      } else if (camera.type.compare("orthographic") == 0) {
+        std::cout << Indent(2) << "xmag          : " << camera.orthographic.xmag
+                  << std::endl;
+        std::cout << Indent(2) << "ymag          : " << camera.orthographic.ymag
+                  << std::endl;
+        std::cout << Indent(2) << "zfar          : " << camera.orthographic.zfar
+                  << std::endl;
+        std::cout << Indent(2)
+                  << "znear         : " << camera.orthographic.znear
+                  << std::endl;
+      }
+
+      std::cout << Indent(1) << "-------------------------------------\n";
+
+      DumpExtensions(camera.extensions, 1);
+      std::cout << PrintValue("extras", camera.extras, 2) << std::endl;
+
+      if (!camera.extensions_json_string.empty()) {
+        std::cout << Indent(2) << "extensions(JSON string) = "
+                  << camera.extensions_json_string << "\n";
+      }
+
+      if (!camera.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << camera.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  {
+    std::cout << "skins(items=" << model.skins.size() << ")" << std::endl;
+    for (size_t i = 0; i < model.skins.size(); i++) {
+      const tinygltf::Skin &skin = model.skins[i];
+      std::cout << Indent(1) << "name         : " << skin.name << std::endl;
+      std::cout << Indent(2)
+                << "inverseBindMatrices   : " << skin.inverseBindMatrices
+                << std::endl;
+      std::cout << Indent(2) << "skeleton              : " << skin.skeleton
+                << std::endl;
+      std::cout << Indent(2)
+                << "joints                : " << PrintIntArray(skin.joints)
+                << std::endl;
+      std::cout << Indent(1) << "-------------------------------------\n";
+
+      DumpExtensions(skin.extensions, 1);
+      std::cout << PrintValue("extras", skin.extras, 2) << std::endl;
+
+      if (!skin.extensions_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extensions(JSON string) = " << skin.extensions_json_string
+                  << "\n";
+      }
+
+      if (!skin.extras_json_string.empty()) {
+        std::cout << Indent(2)
+                  << "extras(JSON string) = " << skin.extras_json_string
+                  << "\n";
+      }
+    }
+  }
+
+  // toplevel extensions
+  {
+    std::cout << "extensions(items=" << model.extensions.size() << ")"
+              << std::endl;
+    DumpExtensions(model.extensions, 1);
+  }
+}
+
+int main(int argc, char **argv) {
+  if (argc < 2) {
+    printf("Needs input.gltf\n");
+    exit(1);
+  }
+
+  // Store original JSON string for `extras` and `extensions`
+  bool store_original_json_for_extras_and_extensions = false;
+  if (argc > 2) {
+    store_original_json_for_extras_and_extensions = true;
+  }
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF gltf_ctx;
+  std::string err;
+  std::string warn;
+  std::string input_filename(argv[1]);
+  std::string ext = GetFilePathExtension(input_filename);
+
+  gltf_ctx.SetStoreOriginalJSONForExtrasAndExtensions(
+      store_original_json_for_extras_and_extensions);
+
+  bool ret = false;
+  if (ext.compare("glb") == 0) {
+    std::cout << "Reading binary glTF" << std::endl;
+    // assume binary glTF.
+    ret = gltf_ctx.LoadBinaryFromFile(&model, &err, &warn,
+                                      input_filename.c_str());
+  } else {
+    std::cout << "Reading ASCII glTF" << std::endl;
+    // assume ascii glTF.
+    ret =
+        gltf_ctx.LoadASCIIFromFile(&model, &err, &warn, input_filename.c_str());
+  }
+
+  if (!warn.empty()) {
+    printf("Warn: %s\n", warn.c_str());
+  }
+
+  if (!err.empty()) {
+    printf("Err: %s\n", err.c_str());
+  }
+
+  if (!ret) {
+    printf("Failed to parse glTF\n");
+    return -1;
+  }
+
+  Dump(model);
+
+  return 0;
+}
--- a/source/lib/tinygltf/premake5.lua
+++ b/source/lib/tinygltf/premake5.lua
@ -0,0 +1,30 @@
+sources = {
+   "loader_example.cc",
+   }
+
+-- premake4.lua
+solution "TinyGLTFSolution"
+   configurations { "Release", "Debug" }
+
+   if (os.is("windows")) then
+      platforms { "x32", "x64" }
+   else
+      platforms { "native", "x32", "x64" }
+   end
+
+   -- A project defines one build target
+   project "tinygltf"
+      kind "ConsoleApp"
+      language "C++"
+      files { sources }
+      flags { "C++11" }
+
+      configuration "Debug"
+         defines { "DEBUG" } -- -DDEBUG
+         flags { "Symbols" }
+         targetname "loader_example_tinygltf_debug"
+
+      configuration "Release"
+         -- defines { "NDEBUG" } -- -NDEBUG
+         flags { "Symbols", "Optimize" }
+         targetname "loader_example_tinygltf"
--- a/source/lib/tinygltf/stb_image.h
+++ b/source/lib/tinygltf/stb_image.h
--- a/source/lib/tinygltf/stb_image_write.h
+++ b/source/lib/tinygltf/stb_image_write.h
--- a/source/lib/tinygltf/test_runner.py
+++ b/source/lib/tinygltf/test_runner.py
@ -0,0 +1,64 @@
+#!/usr/bin/env python
+
+import glob
+import os
+import subprocess
+
+## Simple test runner.
+
+# -- config -----------------------
+
+# Absolute path pointing to your cloned git repo of https://github.com/KhronosGroup/glTF-Sample-Models
+sample_model_dir = "/home/syoyo/work/glTF-Sample-Models"
+base_model_dir = os.path.join(sample_model_dir, "2.0")
+
+# Include `glTF-Draco` when you build `loader_example` with draco support.
+kinds = [ "glTF", "glTF-Binary", "glTF-Embedded", "glTF-MaterialsCommon"]
+# ---------------------------------
+
+failed = []
+success = []
+
+def run(filename):
+
+    print("Testing: " + filename)
+    cmd = ["./loader_example", filename]
+    try:
+        p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        (stdout, stderr) = p.communicate()
+    except:
+        print("Failed to execute: ", cmd)
+        raise
+
+    if p.returncode != 0:
+        failed.append(filename)
+        print(stdout)
+        print(stderr)
+    else:
+        success.append(filename)
+
+
+def test():
+
+    for d in os.listdir(base_model_dir):
+        p = os.path.join(base_model_dir, d)
+        if os.path.isdir(p):
+            for k in kinds:
+                targetDir = os.path.join(p, k)
+                g = glob.glob(targetDir + "/*.gltf") + glob.glob(targetDir + "/*.glb")
+                for gltf in g:
+                    run(gltf)
+
+
+def main():
+
+    test()
+
+    print("Success : {0}".format(len(success)))
+    print("Failed  : {0}".format(len(failed)))
+
+    for fail in failed:
+        print("FAIL: " + fail)
+
+if __name__ == '__main__':
+    main()
--- a/source/lib/tinygltf/tests/Makefile
+++ b/source/lib/tinygltf/tests/Makefile
@ -0,0 +1,6 @@
+# Use this for strict compilation check(will work on clang 3.8+)
+#EXTRA_CXXFLAGS := -fsanitize=address -Wall -Werror -Weverything -Wno-c++11-long-long -DTINYGLTF_APPLY_CLANG_WEVERYTHING
+
+all: ../tiny_gltf.h
+	clang++  -I../ $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o tester tester.cc
+	clang++ -DTINYGLTF_NOEXCEPTION -I../ $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o tester_noexcept tester.cc
--- a/source/lib/tinygltf/tests/catch.hpp
+++ b/source/lib/tinygltf/tests/catch.hpp
--- a/source/lib/tinygltf/tests/fuzzer/README.md
+++ b/source/lib/tinygltf/tests/fuzzer/README.md
@ -0,0 +1,46 @@
+# Fuzzing test
+
+Do fuzzing test for TinyGLTF API.
+
+## Supported API
+
+* [x] LoadASCIIFromMemory
+* [ ] LoadBinaryFromMemory
+
+## Requirements
+
+* meson
+* clang with fuzzer support(`-fsanitize=fuzzer`. at least clang 8.0 should work)
+
+## Setup
+
+### Ubuntu 18.04
+
+```
+$ sudo apt install clang++-8
+$ sudo apt install libfuzzer-8-dev
+```
+
+Optionally, if you didn't set `update-alternatives` you can set `clang++` to point to `clang++8`
+
+```
+$ sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-8 10
+$ sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-8 10
+```
+
+## How to compile
+
+```
+$ CXX=clang++ CC=clang meson build
+$ cd build
+$ ninja
+```
+
+## How to run
+
+Increase memory limit. e.g. `-rss_limit_mb=50000`
+
+```
+$ ./fuzz_gltf -rss_limit_mb=20000 -jobs 4
+```
+
--- a/source/lib/tinygltf/tests/fuzzer/fuzz_gltf.cc
+++ b/source/lib/tinygltf/tests/fuzzer/fuzz_gltf.cc
@ -0,0 +1,33 @@
+#include <cstdint>
+#include <cstring>
+#include <memory>
+#include <vector>
+#include <iostream>
+
+#define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#define TINYGLTF_IMPLEMENTATION
+#include "tiny_gltf.h"
+
+static void parse_intCoding4(const uint8_t *data, size_t size)
+{
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  const char *str = reinterpret_cast<const char *>(data);
+
+  bool ret = ctx.LoadASCIIFromString(&model, &err, &warn, str, size, /* base_dir */"" );
+  (void)ret;
+
+}
+
+extern "C"
+int LLVMFuzzerTestOneInput(std::uint8_t const* data, std::size_t size)
+{
+    parse_intCoding4(data, size);
+    return 0;
+}
+
--- a/source/lib/tinygltf/tests/fuzzer/meson.build
+++ b/source/lib/tinygltf/tests/fuzzer/meson.build
@ -0,0 +1,9 @@
+project('fuzz_tinygltf', 'cpp', default_options : ['cpp_std=c++11'])
+
+incdirs = include_directories('../../')
+executable('fuzz_gltf',
+  'fuzz_gltf.cc',
+  include_directories : incdirs,
+  cpp_args : '-fsanitize=address,fuzzer',
+  link_args : '-fsanitize=address,fuzzer' )
+
--- a/source/lib/tinygltf/tests/issue-416.gltf
+++ b/source/lib/tinygltf/tests/issue-416.gltf
@ -0,0 +1 @@
+{"images":[{"uri":"%!QAAAQAAA5"}],"asset":{"version":""}}
--- a/source/lib/tinygltf/tests/tester.cc
+++ b/source/lib/tinygltf/tests/tester.cc
@ -0,0 +1,759 @@
+#define TINYGLTF_IMPLEMENTATION
+#define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "tiny_gltf.h"
+
+// Nlohmann json(include ../json.hpp)
+#include "json.hpp"
+
+#define CATCH_CONFIG_MAIN  // This tells Catch to provide a main() - only do this in one cpp file
+#include "catch.hpp"
+
+#include <cstdio>
+#include <cstdlib>
+#include <cassert>
+#include <iostream>
+#include <sstream>
+#include <fstream>
+
+static tinygltf::detail::JsonDocument JsonConstruct(const char* str)
+{
+  tinygltf::detail::JsonDocument doc;
+  tinygltf::detail::JsonParse(doc, str, strlen(str));
+  return doc;
+}
+
+
+TEST_CASE("parse-error", "[parse]") {
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  bool ret = ctx.LoadASCIIFromString(&model, &err, &warn, "bora", static_cast<int>(strlen("bora")), /* basedir*/ "");
+
+  REQUIRE(false == ret);
+
+}
+
+TEST_CASE("datauri-in-glb", "[issue-79]") {
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  bool ret = ctx.LoadBinaryFromFile(&model, &err, &warn, "../models/box01.glb");
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+
+  REQUIRE(true == ret);
+}
+
+TEST_CASE("extension-with-empty-object", "[issue-97]") {
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  bool ret = ctx.LoadASCIIFromFile(&model, &err, &warn, "../models/Extensions-issue97/test.gltf");
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+  REQUIRE(true == ret);
+
+  REQUIRE(model.extensionsUsed.size() == 1);
+  REQUIRE(model.extensionsUsed[0].compare("VENDOR_material_some_ext") == 0);
+
+  REQUIRE(model.materials.size() == 1);
+  REQUIRE(model.materials[0].extensions.size() == 1);
+  REQUIRE(model.materials[0].extensions.count("VENDOR_material_some_ext") == 1);
+
+  // TODO(syoyo): create temp directory.
+  {
+    ret = ctx.WriteGltfSceneToFile(&model, "issue-97.gltf", true, true);
+    REQUIRE(true == ret);
+
+    tinygltf::Model m;
+
+    // read back serialized glTF
+    bool ret = ctx.LoadASCIIFromFile(&m, &err, &warn, "issue-97.gltf");
+    if (!err.empty()) {
+      std::cerr << err << std::endl;
+    }
+    REQUIRE(true == ret);
+
+    REQUIRE(m.extensionsUsed.size() == 1);
+    REQUIRE(m.extensionsUsed[0].compare("VENDOR_material_some_ext") == 0);
+
+    REQUIRE(m.materials.size() == 1);
+    REQUIRE(m.materials[0].extensions.size() == 1);
+    REQUIRE(m.materials[0].extensions.count("VENDOR_material_some_ext") == 1);
+  }
+
+}
+
+TEST_CASE("extension-overwrite", "[issue-261]") {
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  bool ret = ctx.LoadASCIIFromFile(&model, &err, &warn, "../models/Extensions-overwrite-issue261/issue-261.gltf");
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+  REQUIRE(true == ret);
+
+  REQUIRE(model.extensionsUsed.size() == 3);
+  {
+    bool has_ext_lights = false;
+    has_ext_lights |= (model.extensionsUsed[0].compare("KHR_lights_punctual") == 0);
+    has_ext_lights |= (model.extensionsUsed[1].compare("KHR_lights_punctual") == 0);
+    has_ext_lights |= (model.extensionsUsed[2].compare("KHR_lights_punctual") == 0);
+
+    REQUIRE(true == has_ext_lights);
+  }
+
+  {
+    REQUIRE(model.extensions.size() == 2);
+    REQUIRE(model.extensions.count("NV_MDL"));
+    REQUIRE(model.extensions.count("KHR_lights_punctual"));
+  }
+
+  // TODO(syoyo): create temp directory.
+  {
+    ret = ctx.WriteGltfSceneToFile(&model, "issue-261.gltf", true, true);
+    REQUIRE(true == ret);
+
+    tinygltf::Model m;
+
+    // read back serialized glTF
+    bool ret = ctx.LoadASCIIFromFile(&m, &err, &warn, "issue-261.gltf");
+    if (!err.empty()) {
+      std::cerr << err << std::endl;
+    }
+    REQUIRE(true == ret);
+
+    REQUIRE(m.extensionsUsed.size() == 3);
+
+    REQUIRE(m.extensions.size() == 2);
+    REQUIRE(m.extensions.count("NV_MDL"));
+    REQUIRE(m.extensions.count("KHR_lights_punctual"));
+
+  }
+
+}
+
+TEST_CASE("invalid-primitive-indices", "[bounds-checking]") {
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  // Loading is expected to fail, but not crash.
+  bool ret = ctx.LoadASCIIFromFile(
+      &model, &err, &warn,
+      "../models/BoundsChecking/invalid-primitive-indices.gltf");
+  REQUIRE_THAT(err,
+               Catch::Contains("primitive indices accessor out of bounds"));
+  REQUIRE_FALSE(ret);
+}
+
+TEST_CASE("invalid-buffer-view-index", "[bounds-checking]") {
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  // Loading is expected to fail, but not crash.
+  bool ret = ctx.LoadASCIIFromFile(
+      &model, &err, &warn,
+      "../models/BoundsChecking/invalid-buffer-view-index.gltf");
+  REQUIRE_THAT(err, Catch::Contains("accessor[0] invalid bufferView"));
+  REQUIRE_FALSE(ret);
+}
+
+TEST_CASE("invalid-buffer-index", "[bounds-checking]") {
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  // Loading is expected to fail, but not crash.
+  bool ret = ctx.LoadASCIIFromFile(
+      &model, &err, &warn,
+      "../models/BoundsChecking/invalid-buffer-index.gltf");
+  REQUIRE_THAT(
+      err, Catch::Contains("image[0] buffer \"1\" not found in the scene."));
+  REQUIRE_FALSE(ret);
+}
+
+TEST_CASE("glb-invalid-length", "[bounds-checking]") {
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  // This glb has a much longer length than the provided data and should fail
+  // initial range checks.
+  const unsigned char glb_invalid_length[] = "glTF"
+      "\x20\x00\x00\x00" "\x6c\x66\x00\x00"     //
+  //  |     version     |     length      |
+      "\x02\x00\x00\x00" "\x4a\x53\x4f\x4e{}";  //
+  //  |  model length   |   model format  |
+
+  bool ret = ctx.LoadBinaryFromMemory(&model, &err, &warn, glb_invalid_length,
+                                      sizeof(glb_invalid_length));
+  REQUIRE_THAT(err, Catch::Contains("Invalid glTF binary."));
+  REQUIRE_FALSE(ret);
+}
+
+TEST_CASE("integer-out-of-bounds", "[bounds-checking]") {
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  // Loading is expected to fail, but not crash.
+  bool ret = ctx.LoadASCIIFromFile(
+      &model, &err, &warn,
+      "../models/BoundsChecking/integer-out-of-bounds.gltf");
+  REQUIRE_THAT(err, Catch::Contains("not a positive integer"));
+  REQUIRE_FALSE(ret);
+}
+
+TEST_CASE("parse-integer", "[bounds-checking]") {
+  SECTION("parses valid numbers") {
+    std::string err;
+    int result = 123;
+    CHECK(tinygltf::ParseIntegerProperty(&result, &err, JsonConstruct("{\"zero\" : 0}"), "zero",
+                                         true));
+    REQUIRE(err == "");
+    REQUIRE(result == 0);
+
+    CHECK(tinygltf::ParseIntegerProperty(&result, &err, JsonConstruct("{\"int\": -1234}"), "int",
+                                         true));
+    REQUIRE(err == "");
+    REQUIRE(result == -1234);
+  }
+
+  SECTION("detects missing properties") {
+    std::string err;
+    int result = -1;
+    CHECK_FALSE(tinygltf::ParseIntegerProperty(&result, &err, JsonConstruct(""), "int", true));
+    REQUIRE_THAT(err, Catch::Contains("'int' property is missing"));
+    REQUIRE(result == -1);
+  }
+
+  SECTION("handled missing but not required properties") {
+    std::string err;
+    int result = -1;
+    CHECK_FALSE(
+        tinygltf::ParseIntegerProperty(&result, &err, JsonConstruct(""), "int", false));
+    REQUIRE(err == "");
+    REQUIRE(result == -1);
+  }
+
+  SECTION("invalid integers") {
+    std::string err;
+    int result = -1;
+
+    CHECK_FALSE(tinygltf::ParseIntegerProperty(&result, &err, JsonConstruct("{\"int\": 0.5}"),
+      "int", true));
+    REQUIRE_THAT(err, Catch::Contains("not an integer type"));
+
+    // Excessively large values and NaN aren't allowed either.
+    err.clear();
+    CHECK_FALSE(tinygltf::ParseIntegerProperty(&result, &err, JsonConstruct("{\"int\": 1e300}"),
+      "int", true));
+    REQUIRE_THAT(err, Catch::Contains("not an integer type"));
+
+    err.clear();
+    {
+      tinygltf::detail::JsonDocument o;
+      double nan = std::numeric_limits<double>::quiet_NaN();
+      tinygltf::detail::JsonAddMember(o, "int", tinygltf::detail::json(nan));
+      CHECK_FALSE(tinygltf::ParseIntegerProperty(
+        &result, &err, o,
+        "int", true));
+      REQUIRE_THAT(err, Catch::Contains("not an integer type"));
+    }
+  }
+}
+
+TEST_CASE("parse-unsigned", "[bounds-checking]") {
+  SECTION("parses valid unsigned integers") {
+    // Use string-based parsing here, using the initializer list syntax doesn't
+    // parse 0 as unsigned.
+    auto zero_obj = JsonConstruct("{\"zero\": 0}");
+
+    std::string err;
+    size_t result = 123;
+    CHECK(
+        tinygltf::ParseUnsignedProperty(&result, &err, zero_obj, "zero", true));
+    REQUIRE(err == "");
+    REQUIRE(result == 0);
+  }
+
+  SECTION("invalid integers") {
+    std::string err;
+    size_t result = -1;
+
+    CHECK_FALSE(tinygltf::ParseUnsignedProperty(&result, &err, JsonConstruct("{\"int\": -1234}"),
+                                                "int", true));
+    REQUIRE_THAT(err, Catch::Contains("not a positive integer"));
+
+    err.clear();
+    CHECK_FALSE(tinygltf::ParseUnsignedProperty(&result, &err, JsonConstruct("{\"int\": 0.5}"),
+                                                "int", true));
+    REQUIRE_THAT(err, Catch::Contains("not a positive integer"));
+
+    // Excessively large values and NaN aren't allowed either.
+    err.clear();
+    CHECK_FALSE(tinygltf::ParseUnsignedProperty(&result, &err, JsonConstruct("{\"int\": 1e300}"),
+                                                "int", true));
+    REQUIRE_THAT(err, Catch::Contains("not a positive integer"));
+
+    err.clear();
+    {
+      tinygltf::detail::JsonDocument o;
+      double nan = std::numeric_limits<double>::quiet_NaN();
+      tinygltf::detail::JsonAddMember(o, "int", tinygltf::detail::json(nan));
+      CHECK_FALSE(tinygltf::ParseUnsignedProperty(
+        &result, &err, o,
+        "int", true));
+      REQUIRE_THAT(err, Catch::Contains("not a positive integer"));
+    }
+  }
+}
+
+TEST_CASE("parse-integer-array", "[bounds-checking]") {
+  SECTION("parses valid integers") {
+    std::string err;
+    std::vector<int> result;
+    CHECK(tinygltf::ParseIntegerArrayProperty(&result, &err,
+                                              JsonConstruct("{\"x\": [-1, 2, 3]}"), "x", true));
+    REQUIRE(err == "");
+    REQUIRE(result.size() == 3);
+    REQUIRE(result[0] == -1);
+    REQUIRE(result[1] == 2);
+    REQUIRE(result[2] == 3);
+  }
+
+  SECTION("invalid integers") {
+    std::string err;
+    std::vector<int> result;
+    CHECK_FALSE(tinygltf::ParseIntegerArrayProperty(
+        &result, &err, JsonConstruct("{\"x\": [-1, 1e300, 3]}"), "x", true));
+    REQUIRE_THAT(err, Catch::Contains("not an integer type"));
+  }
+}
+
+TEST_CASE("pbr-khr-texture-transform", "[material]") {
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  // Loading is expected to fail, but not crash.
+  bool ret = ctx.LoadASCIIFromFile(
+      &model, &err, &warn,
+      "../models/Cube-texture-ext/Cube-textransform.gltf");
+  REQUIRE(ret == true);
+
+  REQUIRE(model.materials.size() == 2);
+  REQUIRE(model.materials[0].emissiveTexture.extensions.count("KHR_texture_transform") == 1);
+  REQUIRE(model.materials[0].emissiveTexture.extensions["KHR_texture_transform"].IsObject());
+
+  tinygltf::Value::Object &texform = model.materials[0].emissiveTexture.extensions["KHR_texture_transform"].Get<tinygltf::Value::Object>();
+
+  REQUIRE(texform.count("scale"));
+
+  REQUIRE(texform["scale"].IsArray());
+
+  // Note: It looks json.hpp parse integer JSON number as integer, not floating point.
+  // IsNumber return true either value is int or floating point.
+  REQUIRE(texform["scale"].Get(0).IsNumber());
+  REQUIRE(texform["scale"].Get(1).IsNumber());
+
+  double scale[2];
+  scale[0] = texform["scale"].Get(0).GetNumberAsDouble();
+  scale[1] = texform["scale"].Get(1).GetNumberAsDouble();
+
+  REQUIRE(scale[0] == Approx(1.0));
+  REQUIRE(scale[1] == Approx(-1.0));
+
+}
+
+TEST_CASE("image-uri-spaces", "[issue-236]") {
+
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  // Test image file with single spaces.
+  {
+    tinygltf::Model model;
+    bool ret = ctx.LoadASCIIFromFile(
+        &model, &err, &warn,
+        "../models/CubeImageUriSpaces/CubeImageUriSpaces.gltf");
+    if (!warn.empty()) {
+      std::cerr << warn << std::endl;
+    }
+    if (!err.empty()) {
+      std::cerr << err << std::endl;
+    }
+
+    REQUIRE(true == ret);
+    REQUIRE(warn.empty());
+    REQUIRE(err.empty());
+    REQUIRE(model.images.size() == 1);
+    REQUIRE(model.images[0].uri.find(' ') != std::string::npos);
+  }
+
+  // Test image file with a beginning space, trailing space, and greater than
+  // one consecutive spaces.
+  tinygltf::Model model;
+  bool ret = ctx.LoadASCIIFromFile(
+      &model, &err, &warn,
+      "../models/CubeImageUriSpaces/CubeImageUriMultipleSpaces.gltf");
+  if (!warn.empty()) {
+    std::cerr << warn << std::endl;
+  }
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+
+  REQUIRE(true == ret);
+  REQUIRE(warn.empty());
+  REQUIRE(err.empty());
+  REQUIRE(model.images.size() == 1);
+  REQUIRE(model.images[0].uri.size() > 1);
+  REQUIRE(model.images[0].uri[0] == ' ');
+
+  // Test the URI encoding API by saving and re-load the file, without embedding
+  // the image.
+  // TODO(syoyo): create temp directory.
+  {
+    // Encoder that only replaces spaces with "%20".
+    auto uriencode = [](const std::string &in_uri,
+                        const std::string &object_type, std::string *out_uri,
+                        void *user_data) -> bool {
+      (void)user_data;
+      bool imageOrBuffer = object_type == "image" || object_type == "buffer";
+      REQUIRE(true == imageOrBuffer);
+      *out_uri = {};
+      for (char c : in_uri) {
+        if (c == ' ')
+          *out_uri += "%20";
+        else
+          *out_uri += c;
+      }
+      return true;
+    };
+
+    // Remove the buffer URI, so a new one is generated based on the gltf
+    // filename and then encoded with the above callback.
+    model.buffers[0].uri.clear();
+
+    tinygltf::URICallbacks uri_cb{uriencode, tinygltf::URIDecode, nullptr};
+    ctx.SetURICallbacks(uri_cb);
+    ret = ctx.WriteGltfSceneToFile(&model, " issue-236.gltf", false, false);
+    REQUIRE(true == ret);
+
+    // read back serialized glTF
+    tinygltf::Model saved;
+    bool ret = ctx.LoadASCIIFromFile(&saved, &err, &warn, " issue-236.gltf");
+    if (!err.empty()) {
+      std::cerr << err << std::endl;
+    }
+    REQUIRE(true == ret);
+    REQUIRE(err.empty());
+    REQUIRE(!warn.empty());  // relative image path won't exist in tests/
+    REQUIRE(saved.images.size() == model.images.size());
+
+    // The image uri in CubeImageUriMultipleSpaces.gltf is not encoded and
+    // should be different after encoding spaces with %20.
+    REQUIRE(model.images[0].uri != saved.images[0].uri);
+
+    // Verify the image path remains the same after uri decoding
+    std::string image_uri, image_uri_saved;
+    (void)tinygltf::URIDecode(model.images[0].uri, &image_uri, nullptr);
+    (void)tinygltf::URIDecode(saved.images[0].uri, &image_uri_saved, nullptr);
+    REQUIRE(image_uri == image_uri_saved);
+
+    // Verify the buffer's generated and encoded URI
+    REQUIRE(saved.buffers.size() == model.buffers.size());
+    REQUIRE(saved.buffers[0].uri == "%20issue-236.bin");
+  }
+}
+
+TEST_CASE("serialize-empty-material", "[issue-294]") {
+
+  tinygltf::Model m;
+
+  tinygltf::Material mat;
+  mat.pbrMetallicRoughness.baseColorFactor = {1.0f, 1.0f, 1.0f, 1.0f}; // default baseColorFactor
+  m.materials.push_back(mat);
+
+  std::stringstream os;
+
+  tinygltf::TinyGLTF ctx;
+  bool ret = ctx.WriteGltfSceneToStream(&m, os, false, false);
+  REQUIRE(true == ret);
+
+  // use nlohmann json
+  nlohmann::json j = nlohmann::json::parse(os.str());
+
+  REQUIRE(1 == j["materials"].size());
+  REQUIRE(j["materials"][0].is_object());
+
+}
+
+TEST_CASE("empty-skeleton-id", "[issue-321]") {
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  bool ret = ctx.LoadASCIIFromFile(&model, &err, &warn, "../models/regression/unassigned-skeleton.gltf");
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+  REQUIRE(true == ret);
+
+  REQUIRE(model.skins.size() == 1);
+  REQUIRE(model.skins[0].skeleton == -1); // unassigned
+
+  std::stringstream os;
+
+  ret = ctx.WriteGltfSceneToStream(&model, os, false, false);
+  REQUIRE(true == ret);
+
+  // use nlohmann json
+  nlohmann::json j = nlohmann::json::parse(os.str());
+
+  // Ensure `skeleton` property is not written to .gltf(was serialized as -1)
+  REQUIRE(1 == j["skins"].size());
+  REQUIRE(j["skins"][0].is_object());
+  REQUIRE(j["skins"][0].count("skeleton") == 0);
+
+}
+
+#ifndef TINYGLTF_NO_FS
+TEST_CASE("expandpath-utf-8", "[pr-226]") {
+
+  std::string s1 = "\xe5\xaf\xb9"; // utf-8 string
+
+  std::string ret = tinygltf::ExpandFilePath(s1, /* userdata */nullptr);
+
+  // expected: E5 AF B9
+  REQUIRE(3 == ret.size());
+
+  REQUIRE(0xe5 == static_cast<uint8_t>(ret[0]));
+  REQUIRE(0xaf == static_cast<uint8_t>(ret[1]));
+  REQUIRE(0xb9 == static_cast<uint8_t>(ret[2]));
+
+}
+#endif
+
+TEST_CASE("empty-bin-buffer", "[issue-382]") {
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  tinygltf::Model model_empty;
+  std::stringstream stream;
+  bool ret = ctx.WriteGltfSceneToStream(&model_empty, stream, false, true);
+  REQUIRE(ret == true);
+  std::string str = stream.str();
+  const unsigned char* bytes = (unsigned char*)str.data();
+  ret = ctx.LoadBinaryFromMemory(&model, &err, &warn, bytes, str.size());
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+  REQUIRE(true == ret);
+
+  err.clear();
+  warn.clear();
+
+  tinygltf::Model model_empty_buffer;
+  model_empty_buffer.buffers.push_back(tinygltf::Buffer());
+  stream = std::stringstream();
+  ret = ctx.WriteGltfSceneToStream(&model_empty_buffer, stream, false, true);
+  REQUIRE(ret == true);
+  str = stream.str();
+  bytes = (unsigned char*)str.data();
+  ret = ctx.LoadBinaryFromMemory(&model, &err, &warn, bytes, str.size());
+  if (err.empty()) {
+    std::cerr << "there should have been an error reported" << std::endl;
+  }
+  REQUIRE(false == ret);
+
+  err.clear();
+  warn.clear();
+
+  tinygltf::Model model_single_byte_buffer;
+  tinygltf::Buffer buffer;
+  buffer.data.push_back(0);
+  model_single_byte_buffer.buffers.push_back(buffer);
+  stream = std::stringstream();
+  ret = ctx.WriteGltfSceneToStream(&model_single_byte_buffer, stream, false, true);
+  REQUIRE(ret == true);
+  str = stream.str();
+  {
+    std::ofstream ofs("tmp.glb");
+    ofs.write(str.data(), str.size());
+  }
+
+  bytes = (unsigned char*)str.data();
+  ret = ctx.LoadBinaryFromMemory(&model_single_byte_buffer, &err, &warn, bytes, str.size());
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+  REQUIRE(true == ret);
+}
+
+TEST_CASE("serialize-const-image", "[issue-394]") {
+  tinygltf::Model m;
+  tinygltf::Image i;
+  i.width = 1;
+  i.height = 1;
+  i.component = 4;
+  i.bits = 8;
+  i.pixel_type = TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE;
+  i.image = {255, 255, 255, 255};
+  i.uri = "image.png";
+  m.images.push_back(i);
+
+  std::stringstream os;
+
+  tinygltf::TinyGLTF ctx;
+  bool ret = ctx.WriteGltfSceneToStream(const_cast<const tinygltf::Model *>(&m), os, false,
+                             false);
+  REQUIRE(true == ret);
+  REQUIRE(m.images[0].uri == i.uri);
+
+  // use nlohmann json
+  nlohmann::json j = nlohmann::json::parse(os.str());
+
+  REQUIRE(1 == j["images"].size());
+  REQUIRE(j["images"][0].is_object());
+  REQUIRE(j["images"][0]["uri"].get<std::string>() != i.uri);
+  REQUIRE(j["images"][0]["uri"].get<std::string>().rfind("data:", 0) == 0);
+}
+
+TEST_CASE("serialize-image-callback", "[issue-394]") {
+  tinygltf::Model m;
+  tinygltf::Image i;
+  i.width = 1;
+  i.height = 1;
+  i.bits = 32;
+  i.image = {255, 255, 255, 255};
+  i.uri = "foo";
+  m.images.push_back(i);
+
+  std::stringstream os;
+
+  auto writer = [](const std::string *basepath, const std::string *filename,
+                   const tinygltf::Image *image, bool embedImages,
+                   const tinygltf::URICallbacks *uri_cb, std::string *out_uri,
+                   void *user_pointer) -> bool {
+    (void)basepath;
+    (void)image;
+    (void)uri_cb;
+    REQUIRE(*filename == "foo");
+    REQUIRE(embedImages == true);
+    REQUIRE(user_pointer == (void *)0xba5e1e55);
+    *out_uri = "bar";
+    return true;
+  };
+
+  tinygltf::TinyGLTF ctx;
+  ctx.SetImageWriter(writer, (void *)0xba5e1e55);
+  bool result = ctx.WriteGltfSceneToStream(const_cast<const tinygltf::Model *>(&m), os, false,
+                             false);
+
+  // use nlohmann json
+  nlohmann::json j = nlohmann::json::parse(os.str());
+
+  REQUIRE(true == result);
+  REQUIRE(1 == j["images"].size());
+  REQUIRE(j["images"][0].is_object());
+  REQUIRE(j["images"][0]["uri"].get<std::string>() == "bar");
+}
+
+TEST_CASE("serialize-image-failure", "[issue-394]") {
+  tinygltf::Model m;
+  tinygltf::Image i;
+  // Set some data so the ImageWriter callback will be called
+  i.image = {255, 255, 255, 255};
+  m.images.push_back(i);
+
+  std::stringstream os;
+
+  auto writer = [](const std::string *basepath, const std::string *filename,
+                   const tinygltf::Image *image, bool embedImages,
+                   const tinygltf::URICallbacks *uri_cb, std::string *out_uri,
+                   void *user_pointer) -> bool {
+    (void)basepath;
+    (void)filename;
+    (void)image;
+    (void)embedImages;
+    (void)uri_cb;
+    (void)out_uri;
+    (void)user_pointer;
+    return false;
+  };
+
+  tinygltf::TinyGLTF ctx;
+  ctx.SetImageWriter(writer, (void *)0xba5e1e55);
+  bool result = ctx.WriteGltfSceneToStream(const_cast<const tinygltf::Model *>(&m), os, false,
+                             false);
+
+  REQUIRE(false == result);
+  REQUIRE(os.str().size() == 0);
+}
+
+TEST_CASE("filesize-check", "[issue-416]") {
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  ctx.SetMaxExternalFileSize(10); // 10 bytes. will fail to load texture image.
+
+  bool ret = ctx.LoadASCIIFromFile(&model, &err, &warn, "../models/Cube/Cube.gltf");
+  if (!err.empty()) {
+    std::cerr << err << std::endl;
+  }
+
+  REQUIRE(false == ret);
+}
+
+TEST_CASE("load-issue-416-model", "[issue-416]") {
+
+  tinygltf::Model model;
+  tinygltf::TinyGLTF ctx;
+  std::string err;
+  std::string warn;
+
+  bool ret = ctx.LoadASCIIFromFile(&model, &err, &warn, "issue-416.gltf");
+  if (!warn.empty()) {
+    std::cout << "WARN:" << warn << std::endl;
+  }
+  if (!err.empty()) {
+    std::cerr << "ERR:" << err << std::endl;
+  }
+
+  // external file load fails, but reading glTF itself is ok.
+  REQUIRE(true == ret);
+}
--- a/source/lib/tinygltf/tiny_gltf.cc
+++ b/source/lib/tinygltf/tiny_gltf.cc
@ -0,0 +1,4 @@
+#define TINYGLTF_IMPLEMENTATION
+#define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "tiny_gltf.h"
--- a/source/lib/tinygltf/tiny_gltf.h
+++ b/source/lib/tinygltf/tiny_gltf.h
--- a/source/lib/tinygltf/tools/windows/premake5.exe
+++ b/source/lib/tinygltf/tools/windows/premake5.exe
--- a/source/lib/tinygltf/vcsetup.bat
+++ b/source/lib/tinygltf/vcsetup.bat
@ -0,0 +1 @@
+.\\tools\\windows\\premake5.exe vs2015
				`@ -0,0 +1 @@`
				`{"images":[{"uri":"%!QAAAQAAA5"}],"asset":{"version":""}}`