Add HandmadeMath.

Add simple morphing code.

.github/workflows/c-cpp.yml

@@ -1,165 +0,0 @@
-name: C/C++ CI
-
-on: [push, pull_request]
-
-jobs:
-
-  # 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-18.04
-    name: Build with MinGW gcc cross
-
-    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 mingw-w64
-            x86_64-w64-mingw32-g++ -std=c++11 -o loader_example loader_example.cc
-
-  # Windows(x64) + Visual Studio 2019 build
-  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 -G "Visual Studio 16 2019" -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-18.04
-    name: Build on cross aarch64
-
-    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-8-aarch64-linux-gnu g++-8-aarch64-linux-gnu
-
-            git clone https://github.com/Tencent/rapidjson
-            aarch64-linux-gnu-g++-8 -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
-

.gitignore

@@ -67,5 +67,4 @@ imgui.ini
 loader_example
 tests/tester
 tests/tester_noexcept
-tests/issue-97.gltf
 

.travis.yml

@@ -31,17 +31,6 @@ matrix:
   - 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
@@ -53,11 +42,6 @@ script:
   - ${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
+  - cd examples/raytrace
   - ../../premake5 gmake
   - make

CMakeLists.txt

@@ -1,41 +0,0 @@
-cmake_minimum_required(VERSION 3.6)
-
-PROJECT (tinygltf)
-
-SET(CMAKE_CXX_STANDARD 11)
-
-option(TINYGLTF_BUILD_LOADER_EXAMPLE "Build loader_example" ON)
-option(TINYGLTF_BUILD_GL_EXAMPLES "Build GL exampels(requires glfw, OpenGL, etc)" OFF)
-option(TINYGLTF_BUILD_VALIDATOR_EXAMPLE "Build validator exampe" OFF)
-
-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)
-#
-# TinuGLTF is a header-only library, so no library build. just install header files.
-#
-INSTALL ( FILES
-  json.hpp
-  stb_image.h
-  stb_image_write.h
-  tiny_gltf.h
-  DESTINATION
-  include
-  )
-
-INSTALL ( FILES
-  cmake/TinyGLTFConfig.cmake
-  DESTINATION
-  cmake
-  )

Makefile

@@ -2,12 +2,8 @@
 # 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)
+	clang++  $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o loader_example loader_example.cc
 
 lint:
-	deps/cpplint.py tiny_gltf.h
+	./cpplint.py tiny_gltf_loader.h

README.md

@@ -3,15 +3,11 @@
 `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.
-If you are looking for old, C++03 version, please use `devel-picojson` branch.
+If you are looking for old, C++03 version, please use `devel-picojson` branch.  
 
 ## Status
 
- - 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 support)
- - v2.0.0 release(22 Aug, 2018)!
+v2.0.0 release(22 Aug, 2018)! 
 
 ## Builds
 
@@ -19,8 +15,6 @@ If you are looking for old, C++03 version, please use `devel-picojson` branch.
 
 [![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
 
 * Written in portable C++. C++-11 with STL dependency only.
@@ -30,49 +24,28 @@ If you are looking for old, C++03 version, please use `devel-picojson` branch.
   * [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)
+  * [x] PBR material description
 * Buffers
-  * [x] Parse BASE64 encoded embedded buffer data(DataURI).
+  * [x] Parse BASE64 encoded embedded buffer fata(DataURI).
   * [x] Load `.bin` file.
 * Image(Using stb_image)
-  * [x] Parse BASE64 encoded embedded image data(DataURI).
+  * [x] Parse BASE64 encoded embedded image fata(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.
+  * [x] PNG(8bit only)
+  * [x] JPEG(8bit only)
+  * [x] BMP
+  * [x] GIF
 
 ## 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.
 
 ## Projects using TinyGLTF
 
@@ -80,26 +53,17 @@ In extension(`ExtensionMap`), JSON number value is parsed as int or float(number
 * 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
 * Your projects here! (Please send PR)
 
 ## TODOs
 
-* [ ] Write C++ code generator which emits C++ code from JSON schema for robust parsing.
-* [ ] Mesh Compression/decompression(Open3DGC, etc)
-  * [x] Load Draco compressed mesh
-  * [ ] Save Draco compressed mesh
-  * [ ] Open3DGC?
-* [x] Support `extensions` and `extras` property
+* [ ] Write C++ code generator from jSON schema for robust parsing.
+* [x] Serialization
+* [ ] Compression/decompression(Open3DGC, etc)
+* [ ] Support `extensions` and `extras` property
 * [ ] HDR image?
   * [ ] OpenEXR extension through TinyEXR.
-* [ ] 16bit PNG support in Serialization
-* [ ] Write example and tests for `animation` and `skin`
+* [ ] Write tests for `animation` and `skin` 
 
 ## Licenses
 
@@ -129,13 +93,13 @@ Copy `stb_image.h`, `stb_image_write.h`, `json.hpp` and `tiny_gltf.h` to your pr
 
 using namespace tinygltf;
 
-Model model;
+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)
+//bool ret = loader.LoadBinaryFromFile(&model, &err, &warn, argv[1]); // for binary glTF(.glb) 
 
 if (!warn.empty()) {
   printf("Warn: %s\n", warn.c_str());
@@ -156,28 +120,16 @@ if (!ret) {
 * `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_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 featrure.
-* `TINYGLTF_USE_CPP14` : Use C++14 feature(requires C++14 compiler). This may give better performance than C++11.
-
 
 ### Saving gltTF 2.0 model
-
-* Buffers.
+* [ ] Buffers.
   * [x] To file
   * [x] Embedded
   * [ ] Draco compressed?
 * [x] Images
   * [x] To file
   * [x] Embedded
-* Binary(.glb)
-  * [x] .bin embedded single .glb
-  * [ ] External .bin
+* [ ] Binary(.glb)
 
 ## Running tests.
 
@@ -205,17 +157,8 @@ $ ./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

cmake/TinyGLTFConfig.cmake

@@ -1,15 +0,0 @@
-# -*- cmake -*-
-# - Find TinyGLTF
-
-# TinyGLTF_INCLUDE_DIR      TinyGLTF's include directory
-
-
-FIND_PACKAGE ( PackageHandleStandardArgs )
-
-SET ( TinyGLTF_INCLUDE_DIR "${TinyGLTF_DIR}/../include" CACHE STRING "TinyGLTF include directory")
-
-FIND_FILE ( TinyGLTF_HEADER tiny_gltf.h PATHS ${TinyGLTF_INCLUDE_DIR} )
-
-IF (NOT TinyGLTF_HEADER)
-  MESSAGE ( FATAL_ERROR "Unable to find tiny_gltf.h, TinyGLTF_INCLUDE_DIR = ${TinyGLTF_INCLUDE_DIR}")
-ENDIF ()

examples/basic/.gitignore

@@ -1,7 +0,0 @@
-.vs
-Debug
-x64
-packages
-
-!*.sln
-!*.vcxproj*

examples/basic/README.md

@@ -1,25 +0,0 @@
-# Basic glTF viewer
-
-## Requirements
-
-* glew
-* glfw3
-* premake5(linux)
-* OpenGL 3.3+ GPU
-
-## Build on Linux and macOS
-
-```
-$ premake5 gmake
-$ make
-```
-
-## Build on Visual Studio
-
-Plese use solution file located at `basic` folder.
-
-
-## Limitation
-
-There are so many limitations in this example(e.g. no PBR shader. the shader only shows texture of textures[0] if available).
-

examples/basic/basic/basic.sln

@@ -1,31 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28010.2050
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "basic", "basic.vcxproj", "{0589AC44-0CF3-40D8-8D89-68393CFD40F3}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|x64 = Debug|x64
-		Debug|x86 = Debug|x86
-		Release|x64 = Release|x64
-		Release|x86 = Release|x86
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Debug|x64.ActiveCfg = Debug|x64
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Debug|x64.Build.0 = Debug|x64
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Debug|x86.ActiveCfg = Debug|Win32
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Debug|x86.Build.0 = Debug|Win32
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Release|x64.ActiveCfg = Release|x64
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Release|x64.Build.0 = Release|x64
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Release|x86.ActiveCfg = Release|Win32
-		{0589AC44-0CF3-40D8-8D89-68393CFD40F3}.Release|x86.Build.0 = Release|Win32
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {055E97C4-43DC-41B4-8D61-4FDDBC7B1EF7}
-	EndGlobalSection
-EndGlobal

examples/basic/basic/basic.vcxproj

@@ -1,159 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <VCProjectVersion>15.0</VCProjectVersion>
-    <ProjectGuid>{0589AC44-0CF3-40D8-8D89-68393CFD40F3}</ProjectGuid>
-    <RootNamespace>basic</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
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examples/basic/basic/basic.vcxproj.filters

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examples/basic/basic/packages.config

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-<packages>
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-  <package id="nupengl.core.redist" version="0.1.0.1" targetFramework="native" />
-</packages>

examples/basic/main.cpp

@@ -1,378 +0,0 @@
-#include <fstream>
-#include <iostream>
-
-#include <GL/glew.h>
-#include <GLFW/glfw3.h>
-#include <glm/gtc/matrix_transform.hpp>
-
-#include "shaders.h"
-#include "window.h"
-
-#define TINYGLTF_IMPLEMENTATION
-#define STB_IMAGE_IMPLEMENTATION
-#define STB_IMAGE_WRITE_IMPLEMENTATION
-#define TINYGLTF_NOEXCEPTION
-#define JSON_NOEXCEPTION
-#include "../../tiny_gltf.h"
-
-#define BUFFER_OFFSET(i) ((char *)NULL + (i))
-
-bool loadModel(tinygltf::Model &model, const char *filename) {
-  tinygltf::TinyGLTF loader;
-  std::string err;
-  std::string warn;
-
-  bool res = loader.LoadASCIIFromFile(&model, &err, &warn, filename);
-  if (!warn.empty()) {
-    std::cout << "WARN: " << warn << std::endl;
-  }
-
-  if (!err.empty()) {
-    std::cout << "ERR: " << err << std::endl;
-  }
-
-  if (!res)
-    std::cout << "Failed to load glTF: " << filename << std::endl;
-  else
-    std::cout << "Loaded glTF: " << filename << std::endl;
-
-  return res;
-}
-
-std::map<int, GLuint> bindMesh(std::map<int, GLuint> vbos,
-                               tinygltf::Model &model, tinygltf::Mesh &mesh) {
-  for (size_t i = 0; i < model.bufferViews.size(); ++i) {
-    const tinygltf::BufferView &bufferView = model.bufferViews[i];
-    if (bufferView.target == 0) {  // TODO impl drawarrays
-      std::cout << "WARN: bufferView.target is zero" << std::endl;
-      continue;  // Unsupported bufferView.
-                 /*
-                   From spec2.0 readme:
-                   https://github.com/KhronosGroup/glTF/tree/master/specification/2.0
-                            ... drawArrays function should be used with a count equal to
-                   the count            property of any of the accessors referenced by the
-                   attributes            property            (they are all equal for a given
-                   primitive).
-                 */
-    }
-
-    const tinygltf::Buffer &buffer = model.buffers[bufferView.buffer];
-    std::cout << "bufferview.target " << bufferView.target << std::endl;
-
-    GLuint vbo;
-    glGenBuffers(1, &vbo);
-    vbos[i] = vbo;
-    glBindBuffer(bufferView.target, vbo);
-
-    std::cout << "buffer.data.size = " << buffer.data.size()
-              << ", bufferview.byteOffset = " << bufferView.byteOffset
-              << std::endl;
-
-    glBufferData(bufferView.target, bufferView.byteLength,
-                 &buffer.data.at(0) + bufferView.byteOffset, GL_STATIC_DRAW);
-  }
-
-  for (size_t i = 0; i < mesh.primitives.size(); ++i) {
-    tinygltf::Primitive primitive = mesh.primitives[i];
-    tinygltf::Accessor indexAccessor = model.accessors[primitive.indices];
-
-    for (auto &attrib : primitive.attributes) {
-      tinygltf::Accessor accessor = model.accessors[attrib.second];
-      int byteStride =
-          accessor.ByteStride(model.bufferViews[accessor.bufferView]);
-      glBindBuffer(GL_ARRAY_BUFFER, vbos[accessor.bufferView]);
-
-      int size = 1;
-      if (accessor.type != TINYGLTF_TYPE_SCALAR) {
-        size = accessor.type;
-      }
-
-      int vaa = -1;
-      if (attrib.first.compare("POSITION") == 0) vaa = 0;
-      if (attrib.first.compare("NORMAL") == 0) vaa = 1;
-      if (attrib.first.compare("TEXCOORD_0") == 0) vaa = 2;
-      if (vaa > -1) {
-        glEnableVertexAttribArray(vaa);
-        glVertexAttribPointer(vaa, size, accessor.componentType,
-                              accessor.normalized ? GL_TRUE : GL_FALSE,
-                              byteStride, BUFFER_OFFSET(accessor.byteOffset));
-      } else
-        std::cout << "vaa missing: " << attrib.first << std::endl;
-    }
-
-    if (model.textures.size() > 0) {
-      // fixme: Use material's baseColor
-      tinygltf::Texture &tex = model.textures[0];
-
-      if (tex.source > -1) {
-
-        GLuint texid;
-        glGenTextures(1, &texid);
-
-        tinygltf::Image &image = model.images[tex.source];
-
-        glBindTexture(GL_TEXTURE_2D, texid);
-        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-
-        GLenum format = GL_RGBA;
-
-        if (image.component == 1) {
-          format = GL_RED;
-        } else if (image.component == 2) {
-          format = GL_RG;
-        } else if (image.component == 3) {
-          format = GL_RGB;
-        } else {
-          // ???
-        }
-
-        GLenum type = GL_UNSIGNED_BYTE;
-        if (image.bits == 8) {
-          // ok
-        } else if (image.bits == 16) {
-          type = GL_UNSIGNED_SHORT;
-        } else {
-          // ???
-        }
-
-        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.width, image.height, 0,
-                     format, type, &image.image.at(0));
-      }
-    }
-  }
-
-  return vbos;
-}
-
-// bind models
-void bindModelNodes(std::map<int, GLuint> vbos, tinygltf::Model &model,
-                    tinygltf::Node &node) {
-  if ((node.mesh >= 0) && (node.mesh < model.meshes.size())) {
-    bindMesh(vbos, model, model.meshes[node.mesh]);
-  }
-
-  for (size_t i = 0; i < node.children.size(); i++) {
-    assert((node.children[i] >= 0) && (node.children[i] < model.nodes.size()));
-    bindModelNodes(vbos, model, model.nodes[node.children[i]]);
-  }
-}
-GLuint bindModel(tinygltf::Model &model) {
-  std::map<int, GLuint> vbos;
-  GLuint vao;
-  glGenVertexArrays(1, &vao);
-  glBindVertexArray(vao);
-
-  const tinygltf::Scene &scene = model.scenes[model.defaultScene];
-  for (size_t i = 0; i < scene.nodes.size(); ++i) {
-    assert((scene.nodes[i] >= 0) && (scene.nodes[i] < model.nodes.size()));
-    bindModelNodes(vbos, model, model.nodes[scene.nodes[i]]);
-  }
-
-  glBindVertexArray(0);
-  // cleanup vbos
-  for (size_t i = 0; i < vbos.size(); ++i) {
-    glDeleteBuffers(1, &vbos[i]);
-  }
-
-  return vao;
-}
-
-void drawMesh(tinygltf::Model &model, tinygltf::Mesh &mesh) {
-  for (size_t i = 0; i < mesh.primitives.size(); ++i) {
-    tinygltf::Primitive primitive = mesh.primitives[i];
-    tinygltf::Accessor indexAccessor = model.accessors[primitive.indices];
-
-    glDrawElements(primitive.mode, indexAccessor.count,
-                   indexAccessor.componentType,
-                   BUFFER_OFFSET(indexAccessor.byteOffset));
-  }
-}
-
-// recursively draw node and children nodes of model
-void drawModelNodes(tinygltf::Model &model, tinygltf::Node &node) {
-  if ((node.mesh >= 0) && (node.mesh < model.meshes.size())) {
-    drawMesh(model, model.meshes[node.mesh]);
-  }
-  for (size_t i = 0; i < node.children.size(); i++) {
-    drawModelNodes(model, model.nodes[node.children[i]]);
-  }
-}
-void drawModel(GLuint vao, tinygltf::Model &model) {
-  glBindVertexArray(vao);
-
-  const tinygltf::Scene &scene = model.scenes[model.defaultScene];
-  for (size_t i = 0; i < scene.nodes.size(); ++i) {
-    drawModelNodes(model, model.nodes[scene.nodes[i]]);
-  }
-
-  glBindVertexArray(0);
-}
-
-void dbgModel(tinygltf::Model &model) {
-  for (auto &mesh : model.meshes) {
-    std::cout << "mesh : " << mesh.name << std::endl;
-    for (auto &primitive : mesh.primitives) {
-      const tinygltf::Accessor &indexAccessor =
-          model.accessors[primitive.indices];
-
-      std::cout << "indexaccessor: count " << indexAccessor.count << ", type "
-                << indexAccessor.componentType << std::endl;
-
-      tinygltf::Material &mat = model.materials[primitive.material];
-      for (auto &mats : mat.values) {
-        std::cout << "mat : " << mats.first.c_str() << std::endl;
-      }
-
-      for (auto &image : model.images) {
-        std::cout << "image name : " << image.uri << std::endl;
-        std::cout << "  size : " << image.image.size() << std::endl;
-        std::cout << "  w/h : " << image.width << "/" << image.height
-                  << std::endl;
-      }
-
-      std::cout << "indices : " << primitive.indices << std::endl;
-      std::cout << "mode     : "
-                << "(" << primitive.mode << ")" << std::endl;
-
-      for (auto &attrib : primitive.attributes) {
-        std::cout << "attribute : " << attrib.first.c_str() << std::endl;
-      }
-    }
-  }
-}
-
-glm::mat4 genView(glm::vec3 pos, glm::vec3 lookat) {
-  // Camera matrix
-  glm::mat4 view = glm::lookAt(
-      pos,                // Camera in World Space
-      lookat,             // and looks at the origin
-      glm::vec3(0, 1, 0)  // Head is up (set to 0,-1,0 to look upside-down)
-  );
-
-  return view;
-}
-
-glm::mat4 genMVP(glm::mat4 view_mat, glm::mat4 model_mat, float fov, int w,
-                 int h) {
-  glm::mat4 Projection =
-      glm::perspective(glm::radians(fov), (float)w / (float)h, 0.01f, 1000.0f);
-
-  // Or, for an ortho camera :
-  // glm::mat4 Projection = glm::ortho(-10.0f,10.0f,-10.0f,10.0f,0.0f,100.0f);
-  // // In world coordinates
-
-  glm::mat4 mvp = Projection * view_mat * model_mat;
-
-  return mvp;
-}
-
-void displayLoop(Window &window, const std::string &filename) {
-  Shaders shader = Shaders();
-  glUseProgram(shader.pid);
-
-  // grab uniforms to modify
-  GLuint MVP_u = glGetUniformLocation(shader.pid, "MVP");
-  GLuint sun_position_u = glGetUniformLocation(shader.pid, "sun_position");
-  GLuint sun_color_u = glGetUniformLocation(shader.pid, "sun_color");
-
-  tinygltf::Model model;
-  if (!loadModel(model, filename.c_str())) return;
-
-  GLuint vao = bindModel(model);
-  // dbgModel(model); return;
-
-  // Model matrix : an identity matrix (model will be at the origin)
-  glm::mat4 model_mat = glm::mat4(1.0f);
-  glm::mat4 model_rot = glm::mat4(1.0f);
-  glm::vec3 model_pos = glm::vec3(-3, 0, -3);
-
-  // generate a camera view, based on eye-position and lookAt world-position
-  glm::mat4 view_mat = genView(glm::vec3(2, 2, 20), model_pos);
-
-  glm::vec3 sun_position = glm::vec3(3.0, 10.0, -5.0);
-  glm::vec3 sun_color = glm::vec3(1.0);
-
-  while (!window.Close()) {
-    window.Resize();
-
-    glClearColor(0.2, 0.2, 0.2, 1.0);
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-    glm::mat4 trans =
-        glm::translate(glm::mat4(1.0f), model_pos);  // reposition model
-    model_rot = glm::rotate(model_rot, glm::radians(0.8f),
-                            glm::vec3(0, 1, 0));  // rotate model on y axis
-    model_mat = trans * model_rot;
-
-    // build a model-view-projection
-    GLint w, h;
-    glfwGetWindowSize(window.window, &w, &h);
-    glm::mat4 mvp = genMVP(view_mat, model_mat, 45.0f, w, h);
-    glUniformMatrix4fv(MVP_u, 1, GL_FALSE, &mvp[0][0]);
-
-    glUniform3fv(sun_position_u, 1, &sun_position[0]);
-    glUniform3fv(sun_color_u, 1, &sun_color[0]);
-
-    drawModel(vao, model);
-    glfwSwapBuffers(window.window);
-    glfwPollEvents();
-  }
-}
-
-static void error_callback(int error, const char *description) {
-  (void)error;
-  fprintf(stderr, "Error: %s\n", description);
-}
-
-int main(int argc, char **argv) {
-  std::string filename = "../../models/Cube/Cube.gltf";
-
-  if (argc > 1) {
-    filename = argv[1];
-  }
-
-  glfwSetErrorCallback(error_callback);
-
-  if (!glfwInit()) return -1;
-
-  // Force create OpenGL 3.3
-  // NOTE(syoyo): Linux + NVIDIA driver segfaults for some reason? commenting out glfwWindowHint will work.
-  glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
-  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
-  glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
-#ifdef __APPLE__
-  glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
-#endif
-
-  Window window = Window(800, 600, "TinyGLTF basic example");
-  glfwMakeContextCurrent(window.window);
-
-#ifdef __APPLE__
-  // https://stackoverflow.com/questions/50192625/openggl-segmentation-fault
-  glewExperimental = GL_TRUE;
-#endif
-
-  glewInit();
-  std::cout << glGetString(GL_RENDERER) << ", " << glGetString(GL_VERSION)
-            << std::endl;
-
-  if (!GLEW_VERSION_3_3) {
-    std::cerr << "OpenGL 3.3 is required to execute this app." << std::endl;
-    return EXIT_FAILURE;
-  }
-
-  glEnable(GL_DEPTH_TEST);
-  glDepthFunc(GL_LESS);
-
-  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-  glEnable(GL_BLEND);
-
-  displayLoop(window, filename);
-
-  glfwTerminate();
-  return 0;
-}

examples/basic/shaders.cpp

@@ -1,114 +0,0 @@
-#include "shaders.h"
-#include <iostream>
-#include <vector>
-
-
-#include <GL/glew.h>
-#include <GLFW/glfw3.h>
-
-std::string FragmentShaderCode =
-"#version 330 core\n\
-in vec3 normal;\n\
-in vec3 position;\n\
-in vec2 texcoord;\n\
-\n\
-uniform sampler2D tex;\n\
-uniform vec3 sun_position; \n\
-uniform vec3 sun_color; \n\
-\n\
-out vec4 color;\n\
-void main() {\n\
-	float lum = max(dot(normal, normalize(sun_position)), 0.0);\n\
-	color = texture(tex, texcoord) * vec4((0.3 + 0.7 * lum) * sun_color, 1.0);\n\
-}\n\
-";
-
-std::string VertexShaderCode =
-"#version 330 core\n\
-layout(location = 0) in vec3 in_vertex;\n\
-layout(location = 1) in vec3 in_normal;\n\
-layout(location = 2) in vec2 in_texcoord;\n\
-\n\
-uniform mat4 MVP;\n\
-\n\
-out vec3 normal;\n\
-out vec3 position;\n\
-out vec2 texcoord;\n\
-\n\
-void main(){\n\
-	gl_Position = MVP * vec4(in_vertex, 1);\n\
-	position = gl_Position.xyz;\n\
-	normal = normalize(mat3(MVP) * in_normal);\n\
-	position = in_vertex;\n\
-	texcoord = in_texcoord;\n\
-}";
-
-
-Shaders::Shaders()
-{
-
-	// Create the shaders
-	GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
-	GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
-
-
-	GLint Result = GL_FALSE;
-	int InfoLogLength;
-
-	// Compile Vertex Shader
-	char const * VertexSourcePointer = VertexShaderCode.c_str();
-	glShaderSource(VertexShaderID, 1, &VertexSourcePointer, NULL);
-	glCompileShader(VertexShaderID);
-
-	// Check Vertex Shader
-	glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &Result);
-	glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
-	if (InfoLogLength > 0) {
-		std::vector<char> VertexShaderErrorMessage(InfoLogLength + 1);
-		glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
-		printf("%s\n", &VertexShaderErrorMessage[0]);
-	}
-
-	// Compile Fragment Shader
-	char const * FragmentSourcePointer = FragmentShaderCode.c_str();
-	glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer, NULL);
-	glCompileShader(FragmentShaderID);
-
-	// Check Fragment Shader
-	glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &Result);
-	glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
-	if (InfoLogLength > 0) {
-		std::vector<char> FragmentShaderErrorMessage(InfoLogLength + 1);
-		glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
-		printf("%s\n", &FragmentShaderErrorMessage[0]);
-	}
-
-	// Link the program
-	printf("Linking program\n");
-	GLuint ProgramID = glCreateProgram();
-	glAttachShader(ProgramID, VertexShaderID);
-	glAttachShader(ProgramID, FragmentShaderID);
-	glLinkProgram(ProgramID);
-
-	// Check the program
-	glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
-	glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
-	if (InfoLogLength > 0) {
-		std::vector<char> ProgramErrorMessage(InfoLogLength + 1);
-		glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
-		printf("%s\n", &ProgramErrorMessage[0]);
-	}
-
-	glDetachShader(ProgramID, VertexShaderID);
-	glDetachShader(ProgramID, FragmentShaderID);
-
-	glDeleteShader(VertexShaderID);
-	glDeleteShader(FragmentShaderID);
-
-	this->pid = ProgramID;
-}
-
-
-Shaders::~Shaders()
-{
-}

examples/basic/shaders.h

@@ -1,13 +0,0 @@
-#pragma once
-
-#include <GL/glew.h>
-#include <GLFW/glfw3.h>
-
-class Shaders
-{
-public:
-	GLuint pid;
-	Shaders();
-	~Shaders();
-};
-

examples/basic/window.cpp

@@ -1,27 +0,0 @@
-#include "window.h"
-
-
-
-Window::Window(int x, int y, const char* title)
-{
-	GLFWwindow* window = glfwCreateWindow(x, y, title, NULL, NULL);
-	this->window = window;
-}
-
-
-Window::~Window()
-{
-	glfwDestroyWindow(this->window);
-}
-
-void Window::Resize() 
-{
-	GLint w, h;
-	glfwGetWindowSize(this->window, &w, &h);
-	glViewport(0, 0, w, h);
-}
-
-int Window::Close()
-{
-	return glfwWindowShouldClose(this->window);
-}

examples/basic/window.h

@@ -1,15 +0,0 @@
-#pragma once
-
-#include <GLFW/glfw3.h>
-
-class Window
-{
-public:
-	GLFWwindow* window;
-
-	Window(int x, int y, const char* title);
-	~Window();
-	void Resize();
-	int Close();
-};
-

examples/common/LICENSE.lodepng

@@ -1,21 +0,0 @@
-Copyright (c) 2005-2018 Lode Vandevenne
-
-This software is provided 'as-is', without any express or implied
-warranty. In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-    claim that you wrote the original software. If you use this software
-    in a product, an acknowledgment in the product documentation would be
-    appreciated but is not required.
-
-    2. Altered source versions must be plainly marked as such, and must not be
-    misrepresented as being the original software.
-
-    3. This notice may not be removed or altered from any source
-    distribution.
-    

examples/common/matrix.cc

@@ -99,6 +99,28 @@ void Matrix::LookAt(float m[4][4], float eye[3], float lookat[3],
 #endif
 }
 
+void Matrix::Identity(float m[4][4]) {
+  m[0][0] = 1.0f;
+  m[0][1] = 0.0f;
+  m[0][2] = 0.0f;
+  m[0][3] = 0.0f;
+
+  m[1][0] = 0.0f;
+  m[1][1] = 1.0f;
+  m[1][2] = 0.0f;
+  m[1][3] = 0.0f;
+
+  m[2][0] = 0.0f;
+  m[2][1] = 0.0f;
+  m[2][2] = 1.0f;
+  m[2][3] = 0.0f;
+
+  m[3][0] = 0.0f;
+  m[3][1] = 0.0f;
+  m[3][2] = 0.0f;
+  m[3][3] = 1.0f;
+}
+
 void Matrix::Inverse(float m[4][4]) {
   /*
    * codes from intel web
@@ -195,7 +217,16 @@ void Matrix::Inverse(float m[4][4]) {
   }
 }
 
-void Matrix::Mult(float dst[4][4], float m0[4][4], float m1[4][4]) {
+void Matrix::Add(float dst[4][4], const float m0[4][4], const float m1[4][4]) {
+  for (int i = 0; i < 4; ++i) {
+    for (int j = 0; j < 4; ++j) {
+      dst[i][j] += m0[i][j] + m1[i][j];
+    }
+  }
+}
+
+
+void Matrix::Mult(float dst[4][4], const float m0[4][4], const float m1[4][4]) {
   for (int i = 0; i < 4; ++i) {
     for (int j = 0; j < 4; ++j) {
       dst[i][j] = 0;
@@ -206,7 +237,7 @@ void Matrix::Mult(float dst[4][4], float m0[4][4], float m1[4][4]) {
   }
 }
 
-void Matrix::MultV(float dst[3], float m[4][4], float v[3]) {
+void Matrix::MultV(float dst[3], const float m[4][4], const float v[3]) {
   // printf("v = %f, %f, %f\n", v[0], v[1], v[2]);
   dst[0] = m[0][0] * v[0] + m[1][0] * v[1] + m[2][0] * v[2] + m[3][0];
   dst[1] = m[0][1] * v[0] + m[1][1] * v[1] + m[2][1] * v[2] + m[3][1];
@@ -214,3 +245,10 @@ void Matrix::MultV(float dst[3], float m[4][4], float v[3]) {
   // printf("m = %f, %f, %f\n", m[3][0], m[3][1], m[3][2]);
   // printf("dst = %f, %f, %f\n", dst[0], dst[1], dst[2]);
 }
+
+void Matrix::MultV4(float dst[4], const float m[4][4], const float v[4]) {
+  dst[0] = m[0][0] * v[0] + m[1][0] * v[1] + m[2][0] * v[2] + m[3][0] * v[3];
+  dst[1] = m[0][1] * v[0] + m[1][1] * v[1] + m[2][1] * v[2] + m[3][1] * v[3];
+  dst[2] = m[0][2] * v[0] + m[1][2] * v[1] + m[2][2] * v[2] + m[3][2] * v[3];
+  dst[3] = m[0][3] * v[0] + m[1][3] * v[1] + m[2][3] * v[2] + m[3][3] * v[3];
+}

examples/common/matrix.h

@@ -10,8 +10,11 @@ public:
   static void LookAt(float m[4][4], float eye[3], float lookat[3],
                      float up[3]);
   static void Inverse(float m[4][4]);
-  static void Mult(float dst[4][4], float m0[4][4], float m1[4][4]);
-  static void MultV(float dst[3], float m[4][4], float v[3]);
+  static void Identity(float m[4][4]);
+  static void Add(float dst[4][4], const float m0[4][4], const float m1[4][4]);
+  static void Mult(float dst[4][4], const float m0[4][4], const float m1[4][4]);
+  static void MultV(float dst[3], const float m[4][4], const float v[3]);
+  static void MultV4(float dst[4], const float m[4][4], const float v[4]);
 };
 
 #endif  // 

examples/common/trackball.cc

@@ -52,11 +52,6 @@
 #include <math.h>
 #include "trackball.h"
 
-#ifdef _MSC_VER
-#pragma warning(disable : 4244)
-#pragma warning(disable : 4305)
-#endif
-
 /*
  * This size should really be based on the distance from the center of
  * rotation to the point on the object underneath the mouse.  That
@@ -173,11 +168,11 @@ void trackball(float q[4], float p1x, float p1y, float p2x, float p2y) {
   /*
    * Avoid problems with out-of-control values...
    */
-  if (t > 1.0f)
-    t = 1.0f;
-  if (t < -1.0f)
-    t = -1.0f;
-  phi = 2.0f * asinf(t);
+  if (t > 1.0)
+    t = 1.0;
+  if (t < -1.0)
+    t = -1.0;
+  phi = 2.0 * asin(t);
 
   axis_to_quat(a, phi, q);
 }

examples/gltfutil/CMakeLists.txt

@@ -4,13 +4,6 @@ project(gltfutil)
 set(CMAKE_CXX_STANDARD 11)
 
 include_directories(../../)
-include_directories(../common/)
 
 file(GLOB gltfutil_sources *.cc *.h)
-add_executable(gltfutil ${gltfutil_sources} ../common/lodepng.cpp)
-
-install ( TARGETS
-  gltfutil
-  DESTINATION
-  bin
-  )
+add_executable(gltfutil ${gltfutil_sources})

examples/gltfutil/gltfuilconfig.h

@@ -49,7 +49,6 @@ struct configuration {
   cli_action action = cli_action::not_set;
   texture_dumper::texture_output_format requested_format =
       texture_dumper::texture_output_format::not_specified;
-  bool use_exr = false;
 
   bool has_output_dir;
   bool is_valid() {

examples/gltfutil/main.cc

@@ -11,9 +11,6 @@
 #define STB_IMAGE_WRITE_IMPLEMENTATION
 #include "stb_image_write.h"
 
-#define TINYEXR_IMPLEMENTATION
-#include "tinyexr.h"
-
 namespace gltfutil {
 int usage(int ret = 0) {
   using std::cout;
@@ -23,9 +20,8 @@ int usage(int ret = 0) {
           "[path to output directory])\n\n"
        //<< "\t\t -i: start in interactive mode\n"
        << "\t\t -d: dump enclosed content (image assets)\n"
-       << "\t\t -f: file format for image output\n"
-       << "\t\t -o: ouptput directory path\n"
-       << "\t\t -e: Use OpenEXR format for 16bit image\n"
+       << "\t\t -f: file format for image output"
+       << "\t\t -o: ouptput directory path"
        << "\t\t -h: print this help\n";
   return ret;
 }
@@ -48,9 +44,6 @@ int parse_args(int argc, char** argv) {
           config.mode = ui_mode::cli;
           config.action = cli_action::dump;
           break;
-        case 'e':
-          config.use_exr = true;
-          break;
         case 'i':
           config.mode = ui_mode::interactive;
           break;
@@ -104,11 +97,6 @@ int parse_args(int argc, char** argv) {
 
         case cli_action::dump: {
           texture_dumper dumper(model);
-
-          if (config.use_exr) {
-            dumper.set_use_exr(true);
-          }
-
           if (config.requested_format !=
               texture_dumper::texture_output_format::not_specified)
             dumper.set_output_format(config.requested_format);

examples/gltfutil/texture_dumper.cc

@@ -1,84 +1,15 @@
-#include <algorithm>
 #include <iostream>
+#include <algorithm>
 
 #include "stb_image_write.h"
 #include "texture_dumper.h"
 
-#include "lodepng.h"  // ../common
-
-#include "tinyexr.h"
-
 #include <tiny_gltf.h>
 
 using namespace gltfutil;
 using namespace tinygltf;
 using std::cout;
 
-static LodePNGColorType GetLodePNGColorType(int channels) {
-  if (channels == 1) {
-    return LodePNGColorType::LCT_GREY;
-  } else if (channels == 2) {
-    return LodePNGColorType::LCT_GREY_ALPHA;
-  } else if (channels == 3) {
-    return LodePNGColorType::LCT_RGB;
-  } else if (channels == 4) {
-    return LodePNGColorType::LCT_RGBA;
-  } else {
-    std::cerr << "??? unsupported channels " << channels << "\n";
-    return LodePNGColorType::LCT_RGB;  // FIXME(syoyo): Raise error
-  }
-}
-
-static void ToBigEndian(std::vector<uint8_t>* image) {
-
-  assert(image->size() % 2 == 0);
-
-  union {
-    unsigned int i;
-    char c[4];
-  } bint = {0x01020304};
-
-  bool is_big_endian = (bint.c[0] == 1);
-
-  if (is_big_endian) {
-    return;
-  }
-
-  uint16_t *ptr = reinterpret_cast<uint16_t *>(image->data());
-  size_t n = image->size() / 2;
-
-  for (size_t i = 0; i < n; i++) {
-    ptr[i] = ((0xFF00 & ptr[i]) >> 8) | ((0x00FF & ptr[i]) << 8);
-  }
-}
-
-static bool Save16bitImageAsEXR(const std::string& filename,
-                                const tinygltf::Image& image) {
-  assert(image.bits == 16);
-
-  std::vector<float> buf(image.width * image.height * image.component);
-
-  // widen to float image.
-  // Store as is(i.e, pixel value range is [0.0, 65535.0])
-  const unsigned short* ptr =
-      reinterpret_cast<const unsigned short*>(image.image.data());
-  for (size_t i = 0; i < image.width * image.height * image.component; i++) {
-    buf[i] = float(ptr[i]);
-  }
-
-  const char* err = nullptr;
-  int ret = SaveEXR(buf.data(), image.width, image.height, image.component,
-                    /* save_as_fp16 */ 0, filename.c_str(), &err);
-
-  if (err) {
-    std::cerr << "EXR err: " << err << std::endl;
-    FreeEXRErrorMessage(err);
-    return false;
-  }
-
-  return (ret == TINYEXR_SUCCESS);
-}
-
 texture_dumper::texture_dumper(const Model& input)
     : model(input), configured_format(texture_output_format::png) {
   cout << "Texture dumper\n";
@@ -95,58 +26,26 @@ void texture_dumper::dump_to_folder(const std::string& path) {
     cout << "image name is: \"" << image.name << "\"\n";
     cout << "image size is: " << image.width << 'x' << image.height << '\n';
     cout << "pixel channel count :" << image.component << '\n';
-    cout << "pixel bit depth :" << image.bits << '\n';
-    std::string basename =
-        image.name.empty() ? std::to_string(index) : image.name;
+    std::string name = image.name.empty() ? std::to_string(index) : image.name;
 
-    unsigned char* bytes_to_write =
-        const_cast<unsigned char*>(image.image.data());
-
-    std::string filename;
     switch (configured_format) {
       case texture_output_format::png:
-        filename = path + "/" + basename + ".png";
-
-        if (this->use_exr) {
-          if (image.pixel_type == TINYGLTF_COMPONENT_TYPE_UNSIGNED_SHORT) {
-            filename = path + "/" + basename + ".exr";
-          }
-        }
-
-        std::cout << "Image will be written to " << filename << '\n';
-
-        if (image.pixel_type == TINYGLTF_COMPONENT_TYPE_UNSIGNED_SHORT) {
-          if (this->use_exr) {
-            bool ret = Save16bitImageAsEXR(filename, image);
-            assert(ret);
-          } else {
-            // Use lodepng to save 16bit PNG.
-            // NOTE(syoyo): `loadpng::encode` requires image data must be stored in big endian.
-            std::vector<uint8_t> tmp = image.image; // copy
-            ToBigEndian(&tmp);
-
-            unsigned ret = lodepng::encode(
-                filename, tmp.data(), image.width, image.height,
-                GetLodePNGColorType(image.component), /* bits */ 16);
-            assert(ret == 0);  // 0 = no err.
-          }
-        } else {
-          // TODO(syoyo): check status
-          stbi_write_png(filename.c_str(), image.width, image.height,
-                         image.component, bytes_to_write, 0);
-        }
+        name = path + "/" + name + ".png";
+        std::cout << "Image will be written to " << name << '\n';
+        stbi_write_png(name.c_str(), image.width, image.height, image.component,
+                       image.image.data(), 0);
         break;
       case texture_output_format::bmp:
-        filename = path + "/" + basename + ".bmp";
-        std::cout << "Image will be written to " << filename << '\n';
-        stbi_write_bmp(filename.c_str(), image.width, image.height,
-                       image.component, bytes_to_write);
+        std::cout << "Image will be written to " << name << '\n';
+        name = path + "/" + name + ".bmp";
+        stbi_write_bmp(name.c_str(), image.width, image.height, image.component,
+                       image.image.data());
         break;
       case texture_output_format::tga:
-        filename = path + "/" + basename + ".tga";
-        std::cout << "Image will be written to " << filename << '\n';
-        stbi_write_tga(filename.c_str(), image.width, image.height,
-                       image.component, bytes_to_write);
+        std::cout << "Image will be written to " << name << '\n';
+        name = path + "/" + name + ".tga";
+        stbi_write_tga(name.c_str(), image.width, image.height, image.component,
+                       image.image.data());
         break;
     }
   }

examples/gltfutil/texture_dumper.h

@@ -12,15 +12,11 @@ class texture_dumper {
  private:
   const tinygltf::Model& model;
   texture_output_format configured_format;
-  bool use_exr = false; // Use EXR for 16bit image?
 
  public:
   texture_dumper(const tinygltf::Model& inputModel);
   void dump_to_folder(const std::string& path = "./");
   void set_output_format(texture_output_format format);
-  void set_use_exr(const bool value) {
-    use_exr = value;
-  }
 
   static texture_output_format get_fromat_from_string(const std::string& str);
 };

examples/glview/.gitignore

@@ -1,7 +0,0 @@
-.vs
-Debug
-x64
-packages
-
-!*.sln
-!*.vcxproj*

examples/glview/CMakeLists.txt

@@ -1,69 +0,0 @@
-cmake_minimum_required(VERSION 3.5)
-project(glview)
-
-set ( CMAKE_PREFIX_PATH cmake )
-
-set ( DRACO_DIR "" CACHE STRING "Path to draco" )
-
-find_package ( GLEW REQUIRED )
-find_package ( GLFW3 REQUIRED )
-find_package ( OpenGL REQUIRED )
-
-if (APPLE)
-  find_library(COCOA_LIBRARY Cocoa)
-  find_library(COREVIDEO_LIBRARY CoreVideo)
-  find_library(IOKIT_LIBRARY IOKit)
-else ()
-  if (NOT WIN32)
-	# This means it is Unices
-	set ( GLFW3_UNIX_LINK_LIBRARIES X11 Xxf86vm Xrandr Xi Xinerama Xcursor )
-	find_package (Threads)
-  endif()
-endif (APPLE)
-
-set(CMAKE_CXX_STANDARD 11)
-
-if (DEFINED DRACO_DIR)
-  if (DRACO_DIR STREQUAL "")
-  else ()
-    # TODO(syoyo): better CMake script for draco
-    add_definitions(-DTINYGLTF_ENABLE_DRACO)
-    include_directories(${DRACO_DIR}/include)
-  
-    link_directories(${DRACO_DIR}/lib)
-    set(DRACO_LIBRARY draco)
-  endif ()
-endif()
-
-include_directories(
-  ../../
-  ../common
-  # ${OPENGL_INCLUDE_DIR}
-  ${GLEW_INCLUDE_DIR}
-  ${GLFW3_INCLUDE_DIR}
-  )
-
-add_executable(glview
-  glview.cc
-  ../common/trackball.cc
-  )
-
-target_link_libraries ( glview
-  ${DRACO_LIBRARY} 
-  ${GLFW3_UNIX_LINK_LIBRARIES}
-  ${GLEW_LIBRARY}
-  ${GLFW3_glfw_LIBRARY}
-  ${OPENGL_gl_LIBRARY}
-  ${OPENGL_glu_LIBRARY}
-  ${COCOA_LIBRARY}
-  ${COREVIDEO_LIBRARY}
-  ${IOKIT_LIBRARY}
-  ${CMAKE_DL_LIBS}
-  ${CMAKE_THREAD_LIBS_INIT}
-  )
-
-install ( TARGETS
-  glview
-  DESTINATION
-  bin
-  )

examples/glview/README.md

@@ -27,17 +27,6 @@ Open .sln in Visual Studio 2013
 
 When running .exe, glew and glfw dll must exist in the working directory.
 
-#### Build with Draco(optional)
-
-Assume CMake build.
-
-```
-$ mkdir build
-$ cd build
-$ cmake -DDRACO_DIR=/path/to/draco ../
-$ make
-```
-
 ## TODO
 
 * [ ] PBR Material

examples/glview/cmake/GLFW3Config.cmake

@@ -1,71 +0,0 @@
-#-*-cmake-*-
-#
-# yue.nicholas@gmail.com
-#
-# This auxiliary CMake file helps in find the glfw3 headers and libraries
-#
-# GLFW3_FOUND            set if glfw3 is found.
-# GLFW3_INCLUDE_DIR      glfw3's include directory
-# GLFW3_LIBRARY_DIR      glfw3's library directory
-# GLFW3_LIBRARIES        all glfw3 libraries
-
-FIND_PACKAGE (Threads)
-
-FIND_PACKAGE ( PackageHandleStandardArgs )
-
-FIND_PATH( GLFW3_LOCATION include/GLFW/glfw3.h
-  "$ENV{GLFW3_HOME}"
-)
-
-FIND_PACKAGE_HANDLE_STANDARD_ARGS ( GLFW3
-  REQUIRED_VARS GLFW3_LOCATION
-  )
-
-IF (GLFW3_FOUND)
-  SET( GLFW3_INCLUDE_DIR "${GLFW3_LOCATION}/include" CACHE STRING "GLFW3 include path")
-  IF (GLFW3_USE_STATIC_LIBS)
-    FIND_LIBRARY ( GLFW3_glfw_LIBRARY  libglfw3.a  ${GLFW3_LOCATION}/lib
-	  )
-  ELSE (GLFW3_USE_STATIC_LIBS)
-	# On windows build, we need to look for glfw3
-	IF (WIN32)
-	  SET ( GLFW3_LIBRARY_NAME glfw3 )
-	ELSE ()
-	  SET ( GLFW3_LIBRARY_NAME glfw )
-	ENDIF()
-    FIND_LIBRARY ( GLFW3_glfw_LIBRARY ${GLFW3_LIBRARY_NAME} ${GLFW3_LOCATION}/lib
-	  )
-  ENDIF (GLFW3_USE_STATIC_LIBS)
-
-  IF (APPLE)
-	FIND_LIBRARY ( COCOA_LIBRARY Cocoa )
-	FIND_LIBRARY ( IOKIT_LIBRARY IOKit )
-	FIND_LIBRARY ( COREVIDEO_LIBRARY CoreVideo )
-  ELSEIF (UNIX AND NOT APPLE)
-	SET ( GLFW3_REQUIRED_X11_LIBRARIES
-	  X11
-      Xi
-      Xrandr
-      Xinerama
-      Xcursor
-      Xxf86vm
-	  m
-	  ${CMAKE_DL_LIBS}
-	  ${CMAKE_THREAD_LIBS_INIT}
-      )
-  ENDIF ()
-  
-  SET ( GLFW3_LIBRARIES
-	${OPENGL_gl_LIBRARY}
-	${OPENGL_glu_LIBRARY}
-	${GLFW3_glfw_LIBRARY}
-	# UNIX
-	${GLFW3_REQUIRED_X11_LIBRARIES}
-	# APPLE
-	${COCOA_LIBRARY}
-	${IOKIT_LIBRARY}
-	${COREVIDEO_LIBRARY}
-	CACHE STRING "GLFW3 required libraries"
-	)
-  
-ENDIF ()

examples/glview/glview.cc

@@ -12,23 +12,15 @@
 #define GLFW_INCLUDE_GLU
 #include <GLFW/glfw3.h>
 
-#ifdef _WIN32
-#include "../common/trackball.h"
-#else
 #include "trackball.h"
-#endif
 
 #define TINYGLTF_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
 #define STB_IMAGE_WRITE_IMPLEMENTATION
-
-#ifdef _WIN32
-#include "../../tiny_gltf.h"
-#else
 #include "tiny_gltf.h"
-#endif
 
-#define BUFFER_OFFSET(i) ((char *)NULL + (i))
+//#define BUFFER_OFFSET(i) ((char *)NULL + (i))
+#define BUFFER_OFFSET(i) (reinterpret_cast<void *>(i))
 
 #define CheckGLErrors(desc)                                                   \
   {                                                                           \
@@ -54,9 +46,7 @@ float eye[3], lookat[3], up[3];
 
 GLFWwindow *window;
 
-typedef struct {
-  GLuint vb;
-} GLBufferState;
+typedef struct { GLuint vb; } GLBufferState;
 
 typedef struct {
   std::vector<GLuint> diffuseTex;  // for each primitive in mesh
@@ -255,26 +245,6 @@ void motionFunc(GLFWwindow *window, double mouse_x, double mouse_y) {
   prevMouseY = mouse_y;
 }
 
-static size_t ComponentTypeByteSize(int type) {
-  switch (type) {
-    case TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE:
-    case TINYGLTF_COMPONENT_TYPE_BYTE:
-      return sizeof(char);
-    case TINYGLTF_COMPONENT_TYPE_UNSIGNED_SHORT:
-    case TINYGLTF_COMPONENT_TYPE_SHORT:
-      return sizeof(short);
-    case TINYGLTF_COMPONENT_TYPE_UNSIGNED_INT:
-    case TINYGLTF_COMPONENT_TYPE_INT:
-      return sizeof(int);
-    case TINYGLTF_COMPONENT_TYPE_FLOAT:
-      return sizeof(float);
-    case TINYGLTF_COMPONENT_TYPE_DOUBLE:
-      return sizeof(double);
-    default:
-      return 0;
-  }
-}
-
 static void SetupMeshState(tinygltf::Model &model, GLuint progId) {
   // Buffer
   {
@@ -282,24 +252,7 @@ static void SetupMeshState(tinygltf::Model &model, GLuint progId) {
       const tinygltf::BufferView &bufferView = model.bufferViews[i];
       if (bufferView.target == 0) {
         std::cout << "WARN: bufferView.target is zero" << std::endl;
-        continue;  // Unsupported bufferView.
-      }
-
-      int sparse_accessor = -1;
-      for (size_t a_i = 0; a_i < model.accessors.size(); ++a_i) {
-        const auto &accessor = model.accessors[a_i];
-        if (accessor.bufferView == i) {
-          std::cout << i << " is used by accessor " << a_i << std::endl;
-          if (accessor.sparse.isSparse) {
-            std::cout
-                << "WARN: this bufferView has at least one sparse accessor to "
-                   "it. We are going to load the data as patched by this "
-                   "sparse accessor, not the original data"
-                << std::endl;
-            sparse_accessor = a_i;
-            break;
-          }
-        }
+        continue;  // Unsupported or not directly used bufferView.
       }
 
       const tinygltf::Buffer &buffer = model.buffers[bufferView.buffer];
@@ -308,94 +261,8 @@ static void SetupMeshState(tinygltf::Model &model, GLuint progId) {
       glBindBuffer(bufferView.target, state.vb);
       std::cout << "buffer.size= " << buffer.data.size()
                 << ", byteOffset = " << bufferView.byteOffset << std::endl;
-
-      if (sparse_accessor < 0)
-        glBufferData(bufferView.target, bufferView.byteLength,
-                     &buffer.data.at(0) + bufferView.byteOffset,
-                     GL_STATIC_DRAW);
-      else {
-        const auto accessor = model.accessors[sparse_accessor];
-        // copy the buffer to a temporary one for sparse patching
-        unsigned char *tmp_buffer = new unsigned char[bufferView.byteLength];
-        memcpy(tmp_buffer, buffer.data.data() + bufferView.byteOffset,
-               bufferView.byteLength);
-
-        const size_t size_of_object_in_buffer =
-            ComponentTypeByteSize(accessor.componentType);
-        const size_t size_of_sparse_indices =
-            ComponentTypeByteSize(accessor.sparse.indices.componentType);
-
-        const auto &indices_buffer_view =
-            model.bufferViews[accessor.sparse.indices.bufferView];
-        const auto &indices_buffer = model.buffers[indices_buffer_view.buffer];
-
-        const auto &values_buffer_view =
-            model.bufferViews[accessor.sparse.values.bufferView];
-        const auto &values_buffer = model.buffers[values_buffer_view.buffer];
-
-        for (size_t sparse_index = 0; sparse_index < accessor.sparse.count;
-             ++sparse_index) {
-          int index = 0;
-          // std::cout << "accessor.sparse.indices.componentType = " <<
-          // accessor.sparse.indices.componentType << std::endl;
-          switch (accessor.sparse.indices.componentType) {
-            case TINYGLTF_COMPONENT_TYPE_BYTE:
-            case TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE:
-              index = (int)*(
-                  unsigned char *)(indices_buffer.data.data() +
-                                   indices_buffer_view.byteOffset +
-                                   accessor.sparse.indices.byteOffset +
-                                   (sparse_index * size_of_sparse_indices));
-              break;
-            case TINYGLTF_COMPONENT_TYPE_SHORT:
-            case TINYGLTF_COMPONENT_TYPE_UNSIGNED_SHORT:
-              index = (int)*(
-                  unsigned short *)(indices_buffer.data.data() +
-                                    indices_buffer_view.byteOffset +
-                                    accessor.sparse.indices.byteOffset +
-                                    (sparse_index * size_of_sparse_indices));
-              break;
-            case TINYGLTF_COMPONENT_TYPE_INT:
-            case TINYGLTF_COMPONENT_TYPE_UNSIGNED_INT:
-              index = (int)*(
-                  unsigned int *)(indices_buffer.data.data() +
-                                  indices_buffer_view.byteOffset +
-                                  accessor.sparse.indices.byteOffset +
-                                  (sparse_index * size_of_sparse_indices));
-              break;
-          }
-          std::cout << "updating sparse data at index  : " << index
-                    << std::endl;
-          // index is now the target of the sparse index to patch in
-          const unsigned char *read_from =
-              values_buffer.data.data() +
-              (values_buffer_view.byteOffset +
-               accessor.sparse.values.byteOffset) +
-              (sparse_index * (size_of_object_in_buffer * accessor.type));
-
-          /*
-          std::cout << ((float*)read_from)[0] << "\n";
-          std::cout << ((float*)read_from)[1] << "\n";
-          std::cout << ((float*)read_from)[2] << "\n";
-          */
-
-          unsigned char *write_to =
-              tmp_buffer + index * (size_of_object_in_buffer * accessor.type);
-
-          memcpy(write_to, read_from, size_of_object_in_buffer * accessor.type);
-        }
-
-        // debug:
-        /*for(size_t p = 0; p < bufferView.byteLength/sizeof(float); p++)
-        {
-          float* b = (float*)tmp_buffer;
-          std::cout << "modified_buffer [" << p << "] = " << b[p] << '\n';
-        }*/
-
-        glBufferData(bufferView.target, bufferView.byteLength, tmp_buffer,
-                     GL_STATIC_DRAW);
-        delete[] tmp_buffer;
-      }
+      glBufferData(bufferView.target, bufferView.byteLength,
+                   &buffer.data.at(0) + bufferView.byteOffset, GL_STATIC_DRAW);
       glBindBuffer(bufferView.target, 0);
 
       gBufferState[i] = state;
@@ -403,55 +270,55 @@ static void SetupMeshState(tinygltf::Model &model, GLuint progId) {
   }
 
 #if 0  // TODO(syoyo): Implement
-	// Texture
-	{
-		for (size_t i = 0; i < model.meshes.size(); i++) {
-			const tinygltf::Mesh &mesh = model.meshes[i];
+  // Texture
+  {
+    for (size_t i = 0; i < model.meshes.size(); i++) {
+      const tinygltf::Mesh &mesh = model.meshes[i];
 
-			gMeshState[mesh.name].diffuseTex.resize(mesh.primitives.size());
-			for (size_t primId = 0; primId < mesh.primitives.size(); primId++) {
-				const tinygltf::Primitive &primitive = mesh.primitives[primId];
+      gMeshState[mesh.name].diffuseTex.resize(mesh.primitives.size());
+      for (size_t primId = 0; primId < mesh.primitives.size(); primId++) {
+        const tinygltf::Primitive &primitive = mesh.primitives[primId];
 
-				gMeshState[mesh.name].diffuseTex[primId] = 0;
+        gMeshState[mesh.name].diffuseTex[primId] = 0;
 
-				if (primitive.material < 0) {
-					continue;
-				}
-				tinygltf::Material &mat = model.materials[primitive.material];
-				// printf("material.name = %s\n", mat.name.c_str());
-				if (mat.values.find("diffuse") != mat.values.end()) {
-					std::string diffuseTexName = mat.values["diffuse"].string_value;
-					if (model.textures.find(diffuseTexName) != model.textures.end()) {
-						tinygltf::Texture &tex = model.textures[diffuseTexName];
-						if (scene.images.find(tex.source) != model.images.end()) {
-							tinygltf::Image &image = model.images[tex.source];
-							GLuint texId;
-							glGenTextures(1, &texId);
-							glBindTexture(tex.target, texId);
-							glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-							glTexParameterf(tex.target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-							glTexParameterf(tex.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        if (primitive.material < 0) {
+          continue;
+        }
+        tinygltf::Material &mat = model.materials[primitive.material];
+        // printf("material.name = %s\n", mat.name.c_str());
+        if (mat.values.find("diffuse") != mat.values.end()) {
+          std::string diffuseTexName = mat.values["diffuse"].string_value;
+          if (model.textures.find(diffuseTexName) != model.textures.end()) {
+            tinygltf::Texture &tex = model.textures[diffuseTexName];
+            if (scene.images.find(tex.source) != model.images.end()) {
+              tinygltf::Image &image = model.images[tex.source];
+              GLuint texId;
+              glGenTextures(1, &texId);
+              glBindTexture(tex.target, texId);
+              glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+              glTexParameterf(tex.target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+              glTexParameterf(tex.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
-							// Ignore Texture.fomat.
-							GLenum format = GL_RGBA;
-							if (image.component == 3) {
-								format = GL_RGB;
-							}
-							glTexImage2D(tex.target, 0, tex.internalFormat, image.width,
-									image.height, 0, format, tex.type,
-									&image.image.at(0));
+              // Ignore Texture.fomat.
+              GLenum format = GL_RGBA;
+              if (image.component == 3) {
+                format = GL_RGB;
+              }
+              glTexImage2D(tex.target, 0, tex.internalFormat, image.width,
+                           image.height, 0, format, tex.type,
+                           &image.image.at(0));
 
-							CheckErrors("texImage2D");
-							glBindTexture(tex.target, 0);
+              CheckErrors("texImage2D");
+              glBindTexture(tex.target, 0);
 
-							printf("TexId = %d\n", texId);
-							gMeshState[mesh.name].diffuseTex[primId] = texId;
-						}
-					}
-				}
-			}
-		}
-	}
+              printf("TexId = %d\n", texId);
+              gMeshState[mesh.name].diffuseTex[primId] = texId;
+            }
+          }
+        }
+      }
+    }
+  }
 #endif
 
   glUseProgram(progId);
@@ -472,164 +339,164 @@ static void SetupMeshState(tinygltf::Model &model, GLuint progId) {
 #if 0  // TODO(syoyo): Implement
 // Setup curves geometry extension
 static void SetupCurvesState(tinygltf::Scene &scene, GLuint progId) {
-	// Find curves primitive.
-	{
-		std::map<std::string, tinygltf::Mesh>::const_iterator it(
-				scene.meshes.begin());
-		std::map<std::string, tinygltf::Mesh>::const_iterator itEnd(
-				scene.meshes.end());
+  // Find curves primitive.
+  {
+    std::map<std::string, tinygltf::Mesh>::const_iterator it(
+        scene.meshes.begin());
+    std::map<std::string, tinygltf::Mesh>::const_iterator itEnd(
+        scene.meshes.end());
 
-		for (; it != itEnd; it++) {
-			const tinygltf::Mesh &mesh = it->second;
+    for (; it != itEnd; it++) {
+      const tinygltf::Mesh &mesh = it->second;
 
-			// Currently we only support one primitive per mesh.
-			if (mesh.primitives.size() > 1) {
-				continue;
-			}
+      // Currently we only support one primitive per mesh.
+      if (mesh.primitives.size() > 1) {
+        continue;
+      }
 
-			for (size_t primId = 0; primId < mesh.primitives.size(); primId++) {
-				const tinygltf::Primitive &primitive = mesh.primitives[primId];
+      for (size_t primId = 0; primId < mesh.primitives.size(); primId++) {
+        const tinygltf::Primitive &primitive = mesh.primitives[primId];
 
-				gMeshState[mesh.name].diffuseTex[primId] = 0;
+        gMeshState[mesh.name].diffuseTex[primId] = 0;
 
-				if (primitive.material.empty()) {
-					continue;
-				}
+        if (primitive.material.empty()) {
+          continue;
+        }
 
-				bool has_curves = false;
-				if (primitive.extras.IsObject()) {
-					if (primitive.extras.Has("ext_mode")) {
-						const tinygltf::Value::Object &o =
-							primitive.extras.Get<tinygltf::Value::Object>();
-						const tinygltf::Value &ext_mode = o.find("ext_mode")->second;
+        bool has_curves = false;
+        if (primitive.extras.IsObject()) {
+          if (primitive.extras.Has("ext_mode")) {
+            const tinygltf::Value::Object &o =
+                primitive.extras.Get<tinygltf::Value::Object>();
+            const tinygltf::Value &ext_mode = o.find("ext_mode")->second;
 
-						if (ext_mode.IsString()) {
-							const std::string &str = ext_mode.Get<std::string>();
-							if (str.compare("curves") == 0) {
-								has_curves = true;
-							}
-						}
-					}
-				}
+            if (ext_mode.IsString()) {
+              const std::string &str = ext_mode.Get<std::string>();
+              if (str.compare("curves") == 0) {
+                has_curves = true;
+              }
+            }
+          }
+        }
 
-				if (!has_curves) {
-					continue;
-				}
+        if (!has_curves) {
+          continue;
+        }
 
-				// Construct curves buffer
-				const tinygltf::Accessor &vtx_accessor =
-					scene.accessors[primitive.attributes.find("POSITION")->second];
-				const tinygltf::Accessor &nverts_accessor =
-					scene.accessors[primitive.attributes.find("NVERTS")->second];
-				const tinygltf::BufferView &vtx_bufferView =
-					scene.bufferViews[vtx_accessor.bufferView];
-				const tinygltf::BufferView &nverts_bufferView =
-					scene.bufferViews[nverts_accessor.bufferView];
-				const tinygltf::Buffer &vtx_buffer =
-					scene.buffers[vtx_bufferView.buffer];
-				const tinygltf::Buffer &nverts_buffer =
-					scene.buffers[nverts_bufferView.buffer];
+        // Construct curves buffer
+        const tinygltf::Accessor &vtx_accessor =
+            scene.accessors[primitive.attributes.find("POSITION")->second];
+        const tinygltf::Accessor &nverts_accessor =
+            scene.accessors[primitive.attributes.find("NVERTS")->second];
+        const tinygltf::BufferView &vtx_bufferView =
+            scene.bufferViews[vtx_accessor.bufferView];
+        const tinygltf::BufferView &nverts_bufferView =
+            scene.bufferViews[nverts_accessor.bufferView];
+        const tinygltf::Buffer &vtx_buffer =
+            scene.buffers[vtx_bufferView.buffer];
+        const tinygltf::Buffer &nverts_buffer =
+            scene.buffers[nverts_bufferView.buffer];
 
-				// std::cout << "vtx_bufferView = " << vtx_accessor.bufferView <<
-				// std::endl;
-				// std::cout << "nverts_bufferView = " << nverts_accessor.bufferView <<
-				// std::endl;
-				// std::cout << "vtx_buffer.size = " << vtx_buffer.data.size() <<
-				// std::endl;
-				// std::cout << "nverts_buffer.size = " << nverts_buffer.data.size() <<
-				// std::endl;
+        // std::cout << "vtx_bufferView = " << vtx_accessor.bufferView <<
+        // std::endl;
+        // std::cout << "nverts_bufferView = " << nverts_accessor.bufferView <<
+        // std::endl;
+        // std::cout << "vtx_buffer.size = " << vtx_buffer.data.size() <<
+        // std::endl;
+        // std::cout << "nverts_buffer.size = " << nverts_buffer.data.size() <<
+        // std::endl;
 
-				const int *nverts =
-					reinterpret_cast<const int *>(nverts_buffer.data.data());
-				const float *vtx =
-					reinterpret_cast<const float *>(vtx_buffer.data.data());
+        const int *nverts =
+            reinterpret_cast<const int *>(nverts_buffer.data.data());
+        const float *vtx =
+            reinterpret_cast<const float *>(vtx_buffer.data.data());
 
-				// Convert to GL_LINES data.
-				std::vector<float> line_pts;
-				size_t vtx_offset = 0;
-				for (int k = 0; k < static_cast<int>(nverts_accessor.count); k++) {
-					for (int n = 0; n < nverts[k] - 1; n++) {
+        // Convert to GL_LINES data.
+        std::vector<float> line_pts;
+        size_t vtx_offset = 0;
+        for (int k = 0; k < static_cast<int>(nverts_accessor.count); k++) {
+          for (int n = 0; n < nverts[k] - 1; n++) {
 
-						line_pts.push_back(vtx[3 * (vtx_offset + n) + 0]);
-						line_pts.push_back(vtx[3 * (vtx_offset + n) + 1]);
-						line_pts.push_back(vtx[3 * (vtx_offset + n) + 2]);
+            line_pts.push_back(vtx[3 * (vtx_offset + n) + 0]);
+            line_pts.push_back(vtx[3 * (vtx_offset + n) + 1]);
+            line_pts.push_back(vtx[3 * (vtx_offset + n) + 2]);
 
-						line_pts.push_back(vtx[3 * (vtx_offset + n + 1) + 0]);
-						line_pts.push_back(vtx[3 * (vtx_offset + n + 1) + 1]);
-						line_pts.push_back(vtx[3 * (vtx_offset + n + 1) + 2]);
+            line_pts.push_back(vtx[3 * (vtx_offset + n + 1) + 0]);
+            line_pts.push_back(vtx[3 * (vtx_offset + n + 1) + 1]);
+            line_pts.push_back(vtx[3 * (vtx_offset + n + 1) + 2]);
 
-						// std::cout << "p0 " << vtx[3 * (vtx_offset + n) + 0] << ", "
-						//                  << vtx[3 * (vtx_offset + n) + 1] << ", "
-						//                  << vtx[3 * (vtx_offset + n) + 2] << std::endl;
+            // std::cout << "p0 " << vtx[3 * (vtx_offset + n) + 0] << ", "
+            //                  << vtx[3 * (vtx_offset + n) + 1] << ", "
+            //                  << vtx[3 * (vtx_offset + n) + 2] << std::endl;
 
-						// std::cout << "p1 " << vtx[3 * (vtx_offset + n+1) + 0] << ", "
-						//                  << vtx[3 * (vtx_offset + n+1) + 1] << ", "
-						//                  << vtx[3 * (vtx_offset + n+1) + 2] << std::endl;
-					}
+            // std::cout << "p1 " << vtx[3 * (vtx_offset + n+1) + 0] << ", "
+            //                  << vtx[3 * (vtx_offset + n+1) + 1] << ", "
+            //                  << vtx[3 * (vtx_offset + n+1) + 2] << std::endl;
+          }
 
-					vtx_offset += nverts[k];
-				}
+          vtx_offset += nverts[k];
+        }
 
-				GLCurvesState state;
-				glGenBuffers(1, &state.vb);
-				glBindBuffer(GL_ARRAY_BUFFER, state.vb);
-				glBufferData(GL_ARRAY_BUFFER, line_pts.size() * sizeof(float),
-						line_pts.data(), GL_STATIC_DRAW);
-				glBindBuffer(GL_ARRAY_BUFFER, 0);
+        GLCurvesState state;
+        glGenBuffers(1, &state.vb);
+        glBindBuffer(GL_ARRAY_BUFFER, state.vb);
+        glBufferData(GL_ARRAY_BUFFER, line_pts.size() * sizeof(float),
+                     line_pts.data(), GL_STATIC_DRAW);
+        glBindBuffer(GL_ARRAY_BUFFER, 0);
 
-				state.count = line_pts.size() / 3;
-				gCurvesMesh[mesh.name] = state;
+        state.count = line_pts.size() / 3;
+        gCurvesMesh[mesh.name] = state;
 
-				// Material
-				tinygltf::Material &mat = scene.materials[primitive.material];
-				// printf("material.name = %s\n", mat.name.c_str());
-				if (mat.values.find("diffuse") != mat.values.end()) {
-					std::string diffuseTexName = mat.values["diffuse"].string_value;
-					if (scene.textures.find(diffuseTexName) != scene.textures.end()) {
-						tinygltf::Texture &tex = scene.textures[diffuseTexName];
-						if (scene.images.find(tex.source) != scene.images.end()) {
-							tinygltf::Image &image = scene.images[tex.source];
-							GLuint texId;
-							glGenTextures(1, &texId);
-							glBindTexture(tex.target, texId);
-							glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-							glTexParameterf(tex.target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-							glTexParameterf(tex.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        // Material
+        tinygltf::Material &mat = scene.materials[primitive.material];
+        // printf("material.name = %s\n", mat.name.c_str());
+        if (mat.values.find("diffuse") != mat.values.end()) {
+          std::string diffuseTexName = mat.values["diffuse"].string_value;
+          if (scene.textures.find(diffuseTexName) != scene.textures.end()) {
+            tinygltf::Texture &tex = scene.textures[diffuseTexName];
+            if (scene.images.find(tex.source) != scene.images.end()) {
+              tinygltf::Image &image = scene.images[tex.source];
+              GLuint texId;
+              glGenTextures(1, &texId);
+              glBindTexture(tex.target, texId);
+              glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+              glTexParameterf(tex.target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+              glTexParameterf(tex.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
-							// Ignore Texture.fomat.
-							GLenum format = GL_RGBA;
-							if (image.component == 3) {
-								format = GL_RGB;
-							}
-							glTexImage2D(tex.target, 0, tex.internalFormat, image.width,
-									image.height, 0, format, tex.type,
-									&image.image.at(0));
+              // Ignore Texture.fomat.
+              GLenum format = GL_RGBA;
+              if (image.component == 3) {
+                format = GL_RGB;
+              }
+              glTexImage2D(tex.target, 0, tex.internalFormat, image.width,
+                           image.height, 0, format, tex.type,
+                           &image.image.at(0));
 
-							CheckErrors("texImage2D");
-							glBindTexture(tex.target, 0);
+              CheckErrors("texImage2D");
+              glBindTexture(tex.target, 0);
 
-							printf("TexId = %d\n", texId);
-							gMeshState[mesh.name].diffuseTex[primId] = texId;
-						}
-					}
-				}
-			}
-		}
-	}
+              printf("TexId = %d\n", texId);
+              gMeshState[mesh.name].diffuseTex[primId] = texId;
+            }
+          }
+        }
+      }
+    }
+  }
 
-	glUseProgram(progId);
-	GLint vtloc = glGetAttribLocation(progId, "in_vertex");
-	GLint nrmloc = glGetAttribLocation(progId, "in_normal");
-	GLint uvloc = glGetAttribLocation(progId, "in_texcoord");
+  glUseProgram(progId);
+  GLint vtloc = glGetAttribLocation(progId, "in_vertex");
+  GLint nrmloc = glGetAttribLocation(progId, "in_normal");
+  GLint uvloc = glGetAttribLocation(progId, "in_texcoord");
 
-	GLint diffuseTexLoc = glGetUniformLocation(progId, "diffuseTex");
-	GLint isCurvesLoc = glGetUniformLocation(progId, "uIsCurves");
+  GLint diffuseTexLoc = glGetUniformLocation(progId, "diffuseTex");
+  GLint isCurvesLoc = glGetUniformLocation(progId, "uIsCurves");
 
-	gGLProgramState.attribs["POSITION"] = vtloc;
-	gGLProgramState.attribs["NORMAL"] = nrmloc;
-	gGLProgramState.attribs["TEXCOORD_0"] = uvloc;
-	gGLProgramState.uniforms["diffuseTex"] = diffuseTexLoc;
-	gGLProgramState.uniforms["uIsCurves"] = isCurvesLoc;
+  gGLProgramState.attribs["POSITION"] = vtloc;
+  gGLProgramState.attribs["NORMAL"] = nrmloc;
+  gGLProgramState.attribs["TEXCOORD_0"] = uvloc;
+  gGLProgramState.uniforms["diffuseTex"] = diffuseTexLoc;
+  gGLProgramState.uniforms["uIsCurves"] = isCurvesLoc;
 };
 #endif
 
@@ -662,6 +529,13 @@ static void DrawMesh(tinygltf::Model &model, const tinygltf::Mesh &mesh) {
     for (; it != itEnd; it++) {
       assert(it->second >= 0);
       const tinygltf::Accessor &accessor = model.accessors[it->second];
+      const tinygltf::BufferView &bufferView = model.bufferViews[accessor.bufferView];
+
+      if (bufferView.target == 0) {
+        // Unsupported or not directly used buffer
+        continue;
+      }
+
       glBindBuffer(GL_ARRAY_BUFFER, gBufferState[accessor.bufferView].vb);
       CheckErrors("bind buffer");
       int size = 1;
@@ -682,13 +556,12 @@ static void DrawMesh(tinygltf::Model &model, const tinygltf::Mesh &mesh) {
           (it->first.compare("TEXCOORD_0") == 0)) {
         if (gGLProgramState.attribs[it->first] >= 0) {
           // Compute byteStride from Accessor + BufferView combination.
-          int byteStride =
-              accessor.ByteStride(model.bufferViews[accessor.bufferView]);
+          int byteStride = accessor.ByteStride(model.bufferViews[accessor.bufferView]);
           assert(byteStride != -1);
           glVertexAttribPointer(gGLProgramState.attribs[it->first], size,
-                                accessor.componentType,
-                                accessor.normalized ? GL_TRUE : GL_FALSE,
-                                byteStride, BUFFER_OFFSET(accessor.byteOffset));
+                                accessor.componentType, accessor.normalized ? GL_TRUE : GL_FALSE,
+                                byteStride,
+                                BUFFER_OFFSET(accessor.byteOffset));
           CheckErrors("vertex attrib pointer");
           glEnableVertexAttribArray(gGLProgramState.attribs[it->first]);
           CheckErrors("enable vertex attrib array");
@@ -742,32 +615,32 @@ static void DrawMesh(tinygltf::Model &model, const tinygltf::Mesh &mesh) {
 
 #if 0  // TODO(syoyo): Implement
 static void DrawCurves(tinygltf::Scene &scene, const tinygltf::Mesh &mesh) {
-	(void)scene;
+  (void)scene;
 
-	if (gCurvesMesh.find(mesh.name) == gCurvesMesh.end()) {
-		return;
-	}
+  if (gCurvesMesh.find(mesh.name) == gCurvesMesh.end()) {
+    return;
+  }
 
-	if (gGLProgramState.uniforms["isCurvesLoc"] >= 0) {
-		glUniform1i(gGLProgramState.uniforms["isCurvesLoc"], 1);
-	}
+  if (gGLProgramState.uniforms["isCurvesLoc"] >= 0) {
+    glUniform1i(gGLProgramState.uniforms["isCurvesLoc"], 1);
+  }
 
-	GLCurvesState &state = gCurvesMesh[mesh.name];
+  GLCurvesState &state = gCurvesMesh[mesh.name];
 
-	if (gGLProgramState.attribs["POSITION"] >= 0) {
-		glBindBuffer(GL_ARRAY_BUFFER, state.vb);
-		glVertexAttribPointer(gGLProgramState.attribs["POSITION"], 3, GL_FLOAT,
-				GL_FALSE, /* stride */ 0, BUFFER_OFFSET(0));
-		CheckErrors("curve: vertex attrib pointer");
-		glEnableVertexAttribArray(gGLProgramState.attribs["POSITION"]);
-		CheckErrors("curve: enable vertex attrib array");
-	}
+  if (gGLProgramState.attribs["POSITION"] >= 0) {
+    glBindBuffer(GL_ARRAY_BUFFER, state.vb);
+    glVertexAttribPointer(gGLProgramState.attribs["POSITION"], 3, GL_FLOAT,
+                          GL_FALSE, /* stride */ 0, BUFFER_OFFSET(0));
+    CheckErrors("curve: vertex attrib pointer");
+    glEnableVertexAttribArray(gGLProgramState.attribs["POSITION"]);
+    CheckErrors("curve: enable vertex attrib array");
+  }
 
-	glDrawArrays(GL_LINES, 0, state.count);
+  glDrawArrays(GL_LINES, 0, state.count);
 
-	if (gGLProgramState.attribs["POSITION"] >= 0) {
-		glDisableVertexAttribArray(gGLProgramState.attribs["POSITION"]);
-	}
+  if (gGLProgramState.attribs["POSITION"] >= 0) {
+    glDisableVertexAttribArray(gGLProgramState.attribs["POSITION"]);
+  }
 }
 #endif
 
@@ -802,35 +675,32 @@ static void DrawNode(tinygltf::Model &model, const tinygltf::Node &node) {
   // std::cout << it->first << std::endl;
   // FIXME(syoyo): Refactor.
   // DrawCurves(scene, it->second);
-  if (node.mesh > -1) {
-    assert(node.mesh < model.meshes.size());
+
+  if ((node.mesh >= 0) && (node.mesh < int(model.meshes.size()))) {
     DrawMesh(model, model.meshes[node.mesh]);
   }
 
   // Draw child nodes.
   for (size_t i = 0; i < node.children.size(); i++) {
-    assert(node.children[i] < model.nodes.size());
     DrawNode(model, model.nodes[node.children[i]]);
   }
 
   glPopMatrix();
 }
 
-static void DrawModel(tinygltf::Model &model) {
+static void DrawModel(tinygltf::Model &model, size_t scene_idx) {
 #if 0
-	std::map<std::string, tinygltf::Mesh>::const_iterator it(scene.meshes.begin());
-	std::map<std::string, tinygltf::Mesh>::const_iterator itEnd(scene.meshes.end());
+  std::map<std::string, tinygltf::Mesh>::const_iterator it(scene.meshes.begin());
+  std::map<std::string, tinygltf::Mesh>::const_iterator itEnd(scene.meshes.end());
 
-	for (; it != itEnd; it++) {
-		DrawMesh(scene, it->second);
-		DrawCurves(scene, it->second);
-	}
+  for (; it != itEnd; it++) {
+    DrawMesh(scene, it->second);
+    DrawCurves(scene, it->second);
+  }
 #else
-  // If the glTF asset has at least one scene, and doesn't define a default one
-  // just show the first one we can find
-  assert(model.scenes.size() > 0);
-  int scene_to_display = model.defaultScene > -1 ? model.defaultScene : 0;
-  const tinygltf::Scene &scene = model.scenes[scene_to_display];
+
+  assert(scene_idx < model.scenes.size());
+  const tinygltf::Scene &scene = model.scenes[scene_idx];
   for (size_t i = 0; i < scene.nodes.size(); i++) {
     DrawNode(model, model.nodes[scene.nodes[i]]);
   }
@@ -861,8 +731,8 @@ static void PrintNodes(const tinygltf::Scene &scene) {
 
 int main(int argc, char **argv) {
   if (argc < 2) {
-    std::cout << "glview input.gltf <scale>" << std::endl;
-    std::cout << "defaulting to example cube model" << std::endl;
+    std::cout << "glview input.gltf <scale>\n" << std::endl;
+    return 0;
   }
 
   float scale = 1.0f;
@@ -874,23 +744,13 @@ int main(int argc, char **argv) {
   tinygltf::TinyGLTF loader;
   std::string err;
   std::string warn;
-
-#ifdef _WIN32
-#ifdef _DEBUG
-  std::string input_filename(argv[1] ? argv[1]
-                                     : "../../../models/Cube/Cube.gltf");
-#endif
-#else
-  std::string input_filename(argv[1] ? argv[1] : "../../models/Cube/Cube.gltf");
-#endif
-
+  std::string input_filename(argv[1]);
   std::string ext = GetFilePathExtension(input_filename);
 
   bool ret = false;
   if (ext.compare("glb") == 0) {
     // assume binary glTF.
-    ret =
-        loader.LoadBinaryFromFile(&model, &err, &warn, input_filename.c_str());
+    ret = loader.LoadBinaryFromFile(&model, &err, &warn, input_filename.c_str());
   } else {
     // assume ascii glTF.
     ret = loader.LoadASCIIFromFile(&model, &err, &warn, input_filename.c_str());
@@ -910,20 +770,28 @@ int main(int argc, char **argv) {
 
   Init();
 
+  if (model.scenes.empty()) {
+    std::cerr << "glTF model does not have scenes" << std::endl;
+    return EXIT_FAILURE;
+  }
+
   // DBG
-  PrintNodes(model.scenes[model.defaultScene > -1 ? model.defaultScene : 0]);
+  size_t scene_idx = size_t(model.defaultScene);
+  if (model.defaultScene == -1) {
+    scene_idx = 0;
+  }
+
+  PrintNodes(model.scenes[scene_idx]);
 
   if (!glfwInit()) {
     std::cerr << "Failed to initialize GLFW." << std::endl;
     return -1;
   }
 
-  std::stringstream ss;
-  ss << "Simple glTF viewer: " << input_filename;
+  char title[1024];
+  sprintf(title, "Simple glTF viewer: %s", input_filename.c_str());
 
-  std::string title = ss.str();
-
-  window = glfwCreateWindow(width, height, title.c_str(), NULL, NULL);
+  window = glfwCreateWindow(width, height, title, NULL, NULL);
   if (window == NULL) {
     std::cerr << "Failed to open GLFW window. " << std::endl;
     glfwTerminate();
@@ -949,23 +817,12 @@ int main(int argc, char **argv) {
   reshapeFunc(window, width, height);
 
   GLuint vertId = 0, fragId = 0, progId = 0;
-
-#ifdef _WIN32
-#ifdef _DEBUG
-  const char *shader_frag_filename = "../shader.frag";
-  const char *shader_vert_filename = "../shader.vert";
-#endif
-#else
-  const char *shader_frag_filename = "shader.frag";
-  const char *shader_vert_filename = "shader.vert";
-#endif
-
-  if (false == LoadShader(GL_VERTEX_SHADER, vertId, shader_vert_filename)) {
+  if (false == LoadShader(GL_VERTEX_SHADER, vertId, "shader.vert")) {
     return -1;
   }
   CheckErrors("load vert shader");
 
-  if (false == LoadShader(GL_FRAGMENT_SHADER, fragId, shader_frag_filename)) {
+  if (false == LoadShader(GL_FRAGMENT_SHADER, fragId, "shader.frag")) {
     return -1;
   }
   CheckErrors("load frag shader");
@@ -1016,7 +873,7 @@ int main(int argc, char **argv) {
 
     glScalef(scale, scale, scale);
 
-    DrawModel(model);
+    DrawModel(model, scene_idx);
 
     glMatrixMode(GL_PROJECTION);
     glPopMatrix();

examples/glview/glview.sln

@@ -1,31 +0,0 @@
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-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|x64 = Debug|x64
-		Debug|x86 = Debug|x86
-		Release|x64 = Release|x64
-		Release|x86 = Release|x86
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Debug|x64.ActiveCfg = Debug|x64
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Debug|x64.Build.0 = Debug|x64
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Debug|x86.ActiveCfg = Debug|Win32
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Debug|x86.Build.0 = Debug|Win32
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Release|x64.ActiveCfg = Release|x64
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Release|x64.Build.0 = Release|x64
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Release|x86.ActiveCfg = Release|Win32
-		{D078BB24-377E-497B-8045-03AF2A0547ED}.Release|x86.Build.0 = Release|Win32
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {DB7C2F91-06C9-4BD8-95BF-04814E0C62DA}
-	EndGlobalSection
-EndGlobal

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-    <ProjectGuid>{D078BB24-377E-497B-8045-03AF2A0547ED}</ProjectGuid>
-    <RootNamespace>glview</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
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-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\packages\nupengl.core.redist.0.1.0.1\build\native\nupengl.core.redist.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\nupengl.core.redist.0.1.0.1\build\native\nupengl.core.redist.targets'))" />
-    <Error Condition="!Exists('..\packages\nupengl.core.0.1.0.1\build\native\nupengl.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\nupengl.core.0.1.0.1\build\native\nupengl.core.targets'))" />
-  </Target>
-</Project>

examples/glview/glview/glview.vcxproj.filters

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <Filter Include="Source Files">
-      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
-      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
-    </Filter>
-    <Filter Include="Header Files">
-      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
-      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
-    </Filter>
-    <Filter Include="Resource Files">
-      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
-      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
-    </Filter>
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="..\glview.cc">
-      <Filter>Source Files</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\common\trackball.cc">
-      <Filter>Source Files</Filter>
-    </ClCompile>
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="packages.config" />
-  </ItemGroup>
-</Project>

examples/glview/glview/glview.vcxproj.user

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup />
-</Project>

examples/glview/glview/packages.config

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="nupengl.core" version="0.1.0.1" targetFramework="native" />
-  <package id="nupengl.core.redist" version="0.1.0.1" targetFramework="native" />
-</packages>

examples/glview/premake5.lua

@@ -1,19 +1,34 @@
+newoption {
+   trigger = "asan",
+   description = "Enable Address Sanitizer(gcc5+ ang clang only)"
+}
+
 solution "glview"
    -- location ( "build" )
    configurations { "Debug", "Release" }
    platforms {"native", "x64", "x32"}
-   
+
    project "glview"
 
+      -- Use clang for better asan expericen
+      if _OPTIONS["asan"] then
+         toolset "clang"
+      end
+
       kind "ConsoleApp"
       language "C++"
 	  cppdialect "C++11"
-      files { "glview.cc", "../common/trackball.cc" }
+      files { "glview.cc", "trackball.cc" }
       includedirs { "./" }
       includedirs { "../../" }
-      includedirs { "../common/" }
 
       configuration { "linux" }
+
+         if _OPTIONS["asan"] then
+            buildoptions { "-fsanitize=address,undefined" }
+            linkoptions { "-fsanitize=address,undefined" }
+         end
+
          linkoptions { "`pkg-config --libs glfw3`" }
          links { "GL", "GLU", "m", "GLEW", "X11", "Xrandr", "Xinerama", "Xi", "Xxf86vm", "Xcursor", "dl" }
 

examples/glview/trackball.cc

@@ -0,0 +1,292 @@
+/*
+ * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
+ * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
+ * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * US Government Users Restricted Rights
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States.  Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+ */
+/*
+ * Trackball code:
+ *
+ * Implementation of a virtual trackball.
+ * Implemented by Gavin Bell, lots of ideas from Thant Tessman and
+ *   the August '88 issue of Siggraph's "Computer Graphics," pp. 121-129.
+ *
+ * Vector manip code:
+ *
+ * Original code from:
+ * David M. Ciemiewicz, Mark Grossman, Henry Moreton, and Paul Haeberli
+ *
+ * Much mucking with by:
+ * Gavin Bell
+ */
+#include <math.h>
+#include "trackball.h"
+
+/*
+ * This size should really be based on the distance from the center of
+ * rotation to the point on the object underneath the mouse.  That
+ * point would then track the mouse as closely as possible.  This is a
+ * simple example, though, so that is left as an Exercise for the
+ * Programmer.
+ */
+#define TRACKBALLSIZE (0.8)
+
+/*
+ * Local function prototypes (not defined in trackball.h)
+ */
+static float tb_project_to_sphere(float, float, float);
+static void normalize_quat(float[4]);
+
+static void vzero(float *v) {
+  v[0] = 0.0;
+  v[1] = 0.0;
+  v[2] = 0.0;
+}
+
+static void vset(float *v, float x, float y, float z) {
+  v[0] = x;
+  v[1] = y;
+  v[2] = z;
+}
+
+static void vsub(const float *src1, const float *src2, float *dst) {
+  dst[0] = src1[0] - src2[0];
+  dst[1] = src1[1] - src2[1];
+  dst[2] = src1[2] - src2[2];
+}
+
+static void vcopy(const float *v1, float *v2) {
+  int i;
+  for (i = 0; i < 3; i++)
+    v2[i] = v1[i];
+}
+
+static void vcross(const float *v1, const float *v2, float *cross) {
+  float temp[3];
+
+  temp[0] = (v1[1] * v2[2]) - (v1[2] * v2[1]);
+  temp[1] = (v1[2] * v2[0]) - (v1[0] * v2[2]);
+  temp[2] = (v1[0] * v2[1]) - (v1[1] * v2[0]);
+  vcopy(temp, cross);
+}
+
+static float vlength(const float *v) {
+  return sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
+}
+
+static void vscale(float *v, float div) {
+  v[0] *= div;
+  v[1] *= div;
+  v[2] *= div;
+}
+
+static void vnormal(float *v) { vscale(v, 1.0 / vlength(v)); }
+
+static float vdot(const float *v1, const float *v2) {
+  return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
+}
+
+static void vadd(const float *src1, const float *src2, float *dst) {
+  dst[0] = src1[0] + src2[0];
+  dst[1] = src1[1] + src2[1];
+  dst[2] = src1[2] + src2[2];
+}
+
+/*
+ * Ok, simulate a track-ball.  Project the points onto the virtual
+ * trackball, then figure out the axis of rotation, which is the cross
+ * product of P1 P2 and O P1 (O is the center of the ball, 0,0,0)
+ * Note:  This is a deformed trackball-- is a trackball in the center,
+ * but is deformed into a hyperbolic sheet of rotation away from the
+ * center.  This particular function was chosen after trying out
+ * several variations.
+ *
+ * It is assumed that the arguments to this routine are in the range
+ * (-1.0 ... 1.0)
+ */
+void trackball(float q[4], float p1x, float p1y, float p2x, float p2y) {
+  float a[3]; /* Axis of rotation */
+  float phi;  /* how much to rotate about axis */
+  float p1[3], p2[3], d[3];
+  float t;
+
+  if (p1x == p2x && p1y == p2y) {
+    /* Zero rotation */
+    vzero(q);
+    q[3] = 1.0;
+    return;
+  }
+
+  /*
+   * First, figure out z-coordinates for projection of P1 and P2 to
+   * deformed sphere
+   */
+  vset(p1, p1x, p1y, tb_project_to_sphere(TRACKBALLSIZE, p1x, p1y));
+  vset(p2, p2x, p2y, tb_project_to_sphere(TRACKBALLSIZE, p2x, p2y));
+
+  /*
+   *  Now, we want the cross product of P1 and P2
+   */
+  vcross(p2, p1, a);
+
+  /*
+   *  Figure out how much to rotate around that axis.
+   */
+  vsub(p1, p2, d);
+  t = vlength(d) / (2.0 * TRACKBALLSIZE);
+
+  /*
+   * Avoid problems with out-of-control values...
+   */
+  if (t > 1.0)
+    t = 1.0;
+  if (t < -1.0)
+    t = -1.0;
+  phi = 2.0 * asin(t);
+
+  axis_to_quat(a, phi, q);
+}
+
+/*
+ *  Given an axis and angle, compute quaternion.
+ */
+void axis_to_quat(float a[3], float phi, float q[4]) {
+  vnormal(a);
+  vcopy(a, q);
+  vscale(q, sin(phi / 2.0));
+  q[3] = cos(phi / 2.0);
+}
+
+/*
+ * Project an x,y pair onto a sphere of radius r OR a hyperbolic sheet
+ * if we are away from the center of the sphere.
+ */
+static float tb_project_to_sphere(float r, float x, float y) {
+  float d, t, z;
+
+  d = sqrt(x * x + y * y);
+  if (d < r * 0.70710678118654752440) { /* Inside sphere */
+    z = sqrt(r * r - d * d);
+  } else { /* On hyperbola */
+    t = r / 1.41421356237309504880;
+    z = t * t / d;
+  }
+  return z;
+}
+
+/*
+ * Given two rotations, e1 and e2, expressed as quaternion rotations,
+ * figure out the equivalent single rotation and stuff it into dest.
+ *
+ * This routine also normalizes the result every RENORMCOUNT times it is
+ * called, to keep error from creeping in.
+ *
+ * NOTE: This routine is written so that q1 or q2 may be the same
+ * as dest (or each other).
+ */
+
+#define RENORMCOUNT 97
+
+void add_quats(float q1[4], float q2[4], float dest[4]) {
+  static int count = 0;
+  float t1[4], t2[4], t3[4];
+  float tf[4];
+
+  vcopy(q1, t1);
+  vscale(t1, q2[3]);
+
+  vcopy(q2, t2);
+  vscale(t2, q1[3]);
+
+  vcross(q2, q1, t3);
+  vadd(t1, t2, tf);
+  vadd(t3, tf, tf);
+  tf[3] = q1[3] * q2[3] - vdot(q1, q2);
+
+  dest[0] = tf[0];
+  dest[1] = tf[1];
+  dest[2] = tf[2];
+  dest[3] = tf[3];
+
+  if (++count > RENORMCOUNT) {
+    count = 0;
+    normalize_quat(dest);
+  }
+}
+
+/*
+ * Quaternions always obey:  a^2 + b^2 + c^2 + d^2 = 1.0
+ * If they don't add up to 1.0, dividing by their magnitued will
+ * renormalize them.
+ *
+ * Note: See the following for more information on quaternions:
+ *
+ * - Shoemake, K., Animating rotation with quaternion curves, Computer
+ *   Graphics 19, No 3 (Proc. SIGGRAPH'85), 245-254, 1985.
+ * - Pletinckx, D., Quaternion calculus as a basic tool in computer
+ *   graphics, The Visual Computer 5, 2-13, 1989.
+ */
+static void normalize_quat(float q[4]) {
+  int i;
+  float mag;
+
+  mag = (q[0] * q[0] + q[1] * q[1] + q[2] * q[2] + q[3] * q[3]);
+  for (i = 0; i < 4; i++)
+    q[i] /= mag;
+}
+
+/*
+ * Build a rotation matrix, given a quaternion rotation.
+ *
+ */
+void build_rotmatrix(float m[4][4], const float q[4]) {
+  m[0][0] = 1.0 - 2.0 * (q[1] * q[1] + q[2] * q[2]);
+  m[0][1] = 2.0 * (q[0] * q[1] - q[2] * q[3]);
+  m[0][2] = 2.0 * (q[2] * q[0] + q[1] * q[3]);
+  m[0][3] = 0.0;
+
+  m[1][0] = 2.0 * (q[0] * q[1] + q[2] * q[3]);
+  m[1][1] = 1.0 - 2.0 * (q[2] * q[2] + q[0] * q[0]);
+  m[1][2] = 2.0 * (q[1] * q[2] - q[0] * q[3]);
+  m[1][3] = 0.0;
+
+  m[2][0] = 2.0 * (q[2] * q[0] - q[1] * q[3]);
+  m[2][1] = 2.0 * (q[1] * q[2] + q[0] * q[3]);
+  m[2][2] = 1.0 - 2.0 * (q[1] * q[1] + q[0] * q[0]);
+  m[2][3] = 0.0;
+
+  m[3][0] = 0.0;
+  m[3][1] = 0.0;
+  m[3][2] = 0.0;
+  m[3][3] = 1.0;
+}

examples/glview/trackball.h

@@ -0,0 +1,75 @@
+/*
+ * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
+ * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
+ * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * US Government Users Restricted Rights
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States.  Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+ */
+/*
+ * trackball.h
+ * A virtual trackball implementation
+ * Written by Gavin Bell for Silicon Graphics, November 1988.
+ */
+
+/*
+ * Pass the x and y coordinates of the last and current positions of
+ * the mouse, scaled so they are from (-1.0 ... 1.0).
+ *
+ * The resulting rotation is returned as a quaternion rotation in the
+ * first paramater.
+ */
+void trackball(float q[4], float p1x, float p1y, float p2x, float p2y);
+
+void negate_quat(float *q, float *qn);
+
+/*
+ * Given two quaternions, add them together to get a third quaternion.
+ * Adding quaternions to get a compound rotation is analagous to adding
+ * translations to get a compound translation.  When incrementally
+ * adding rotations, the first argument here should be the new
+ * rotation, the second and third the total rotation (which will be
+ * over-written with the resulting new total rotation).
+ */
+void add_quats(float *q1, float *q2, float *dest);
+
+/*
+ * A useful function, builds a rotation matrix in Matrix based on
+ * given quaternion.
+ */
+void build_rotmatrix(float m[4][4], const float q[4]);
+
+/*
+ * This function computes a quaternion based on an axis (defined by
+ * the given vector) and an angle about which to rotate.  The angle is
+ * expressed in radians.  The result is put into the third argument.
+ */
+void axis_to_quat(float a[3], float phi, float q[4]);

examples/skinning/README.md

@@ -0,0 +1,19 @@
+# Simple glTF skinning sample with CPU skinning implementation.
+
+Example use CPU implementation of skinning for the explanation of how to process skin property in glTF format.
+
+Animation and skinning code is based on SacchaWillems' Vulkan-glTF-PBR: https://github.com/SaschaWillems/Vulkan-glTF-PBR
+
+OpenGL is still used to display renderings.
+
+## Build on Linux and macOS
+
+```
+$ premake5 gmake
+$ make
+$ ./bin/native/Debug/skinning simple-skin.gltf
+```
+
+## Note on asset
+
+`simple-skin.gltf` is grabbed from gltfTutorial https://github.com/KhronosGroup/glTF-Tutorials/blob/master/gltfTutorial/gltfTutorial_019_SimpleSkin.md

examples/skinning/morph-targets.cc

@@ -0,0 +1,22 @@
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+void MorthTargets(std::vector<float> &weights,
+  std::vector<std::vector<float>> &targets,
+  std::vector<float> *output)
+{
+  assert(weights.size() > 0);
+  assert(targets.size() > 0);
+  assert(weights.size() == targets.size());
+
+  // Assume all position has same number of vertices;
+
+  // TODO(parallelize)
+  for (size_t v = 0; v < targets[0].size(); v++) { // for each vertex
+    (*output)[v] = 0.0f;  
+    for (size_t i = 0; i < weights.size(); i++) {
+      (*output)[v] += weights[i] * targets[i][v];
+    }
+  }
+}

examples/skinning/premake5.lua

@@ -1,19 +1,34 @@
-solution "basic_viewer"
+newoption {
+   trigger = "asan",
+   description = "Enable Address Sanitizer(gcc5+ ang clang only)"
+}
+
+solution "skinning"
    -- location ( "build" )
    configurations { "Debug", "Release" }
    platforms {"native", "x64", "x32"}
    
-   project "basic_viewer"
+   project "skinning"
+
+      -- Use clang for better asan expericen
+      if _OPTIONS["asan"] then
+         toolset "clang"
+      end
 
       kind "ConsoleApp"
       language "C++"
 	  cppdialect "C++11"
-      files { "main.cpp", "shaders.cpp", "window.cpp" }
+      files { "main.cc", "skinning.cc", "morph-targets.cc", "../common/trackball.cc", "../common/matrix.cc" }
       includedirs { "./" }
       includedirs { "../../" }
-      includedirs { "../common/glm" }
 
       configuration { "linux" }
+
+         if _OPTIONS["asan"] then
+            buildoptions { "-fsanitize=address" }
+            linkoptions { "-fsanitize=address" }
+         end
+
          linkoptions { "`pkg-config --libs glfw3`" }
          links { "GL", "GLU", "m", "GLEW", "X11", "Xrandr", "Xinerama", "Xi", "Xxf86vm", "Xcursor", "dl" }
 

examples/skinning/shader.frag

@@ -0,0 +1,16 @@
+uniform sampler2D diffuseTex;
+uniform int uIsCurve;
+
+varying vec3 normal;
+varying vec2 texcoord;
+
+void main(void)
+{
+    //gl_FragColor = vec4(0.5 * normalize(normal) + 0.5, 1.0);
+    //gl_FragColor = vec4(texcoord, 0.0, 1.0);
+    if (uIsCurve > 0) {
+        gl_FragColor = texture2D(diffuseTex, texcoord);
+    } else {
+        gl_FragColor = vec4(0.5 * normalize(normal) + 0.5, 1.0);
+    }
+}

examples/skinning/shader.vert

@@ -0,0 +1,16 @@
+attribute vec3    in_vertex;
+attribute vec3    in_normal;
+attribute vec2    in_texcoord;
+
+varying vec3      normal;
+varying vec2      texcoord;
+
+void main(void)
+{
+	vec4 p = gl_ModelViewProjectionMatrix * vec4(in_vertex, 1);
+	gl_Position = p;
+	vec4 nn = gl_ModelViewMatrixInverseTranspose * vec4(normalize(in_normal), 0);
+	normal = nn.xyz;
+
+	texcoord = in_texcoord;
+}

examples/skinning/simple-skin.gltf

@@ -0,0 +1,148 @@
+{
+  "scenes" : [ {
+    "nodes" : [ 0 ]
+  } ],
+  
+  "nodes" : [ {
+    "skin" : 0,
+    "mesh" : 0,
+    "children" : [ 1 ]
+  }, {
+    "children" : [ 2 ],
+    "translation" : [ 0.0, 1.0, 0.0 ]
+  }, {
+    "rotation" : [ 0.0, 0.0, 0.0, 1.0 ]
+  } ],
+  
+  "meshes" : [ {
+    "primitives" : [ {
+      "attributes" : {
+        "POSITION" : 1,
+        "JOINTS_0" : 2,
+        "WEIGHTS_0" : 3
+      },
+      "indices" : 0
+    } ]
+  } ],
+
+  "skins" : [ {
+    "inverseBindMatrices" : 4,
+    "joints" : [ 1, 2 ]
+  } ],
+  
+  "animations" : [ {
+    "channels" : [ {
+      "sampler" : 0,
+      "target" : {
+        "node" : 2,
+        "path" : "rotation"
+      }
+    } ],
+    "samplers" : [ {
+      "input" : 5,
+      "interpolation" : "LINEAR",
+      "output" : 6
+    } ]
+  } ],
+  
+  "buffers" : [ {
+    "uri" : "data:application/gltf-buffer;base64,AAABAAMAAAADAAIAAgADAAUAAgAFAAQABAAFAAcABAAHAAYABgAHAAkABgAJAAgAAAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAAAAAAAAAAD8AAAAAAACAPwAAAD8AAAAAAAAAAAAAgD8AAAAAAACAPwAAgD8AAAAAAAAAAAAAwD8AAAAAAACAPwAAwD8AAAAAAAAAAAAAAEAAAAAAAACAPwAAAEAAAAAA",
+    "byteLength" : 168
+  }, {
+    "uri" : "data:application/gltf-buffer;base64,AAABAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAgD8AAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAABAPwAAgD4AAAAAAAAAAAAAQD8AAIA+AAAAAAAAAAAAAAA/AAAAPwAAAAAAAAAAAAAAPwAAAD8AAAAAAAAAAAAAgD4AAEA/AAAAAAAAAAAAAIA+AABAPwAAAAAAAAAAAAAAAAAAgD8AAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAA=",
+    "byteLength" : 320
+  }, {
+    "uri" : "data:application/gltf-buffer;base64,AACAPwAAAAAAAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAAAAAAAAgD8AAAAAAAAAvwAAgL8AAAAAAACAPwAAgD8AAAAAAAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAAAAAAAAAAAAAAIA/AAAAAAAAAL8AAIC/AAAAAAAAgD8=",
+    "byteLength" : 128
+  }, {
+    "uri" : "data:application/gltf-buffer;base64,AAAAAAAAAD8AAIA/AADAPwAAAEAAACBAAABAQAAAYEAAAIBAAACQQAAAoEAAALBAAAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAkxjEPkSLbD8AAAAAAAAAAPT9ND/0/TQ/AAAAAAAAAAD0/TQ/9P00PwAAAAAAAAAAkxjEPkSLbD8AAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAkxjEvkSLbD8AAAAAAAAAAPT9NL/0/TQ/AAAAAAAAAAD0/TS/9P00PwAAAAAAAAAAkxjEvkSLbD8AAAAAAAAAAAAAAAAAAIA/",
+    "byteLength" : 240
+  } ],
+  
+  "bufferViews" : [ {
+    "buffer" : 0,
+    "byteOffset" : 0,
+    "byteLength" : 48,
+    "target" : 34963
+  }, {
+    "buffer" : 0,
+    "byteOffset" : 48,
+    "byteLength" : 120,
+    "target" : 34962
+  }, {
+    "buffer" : 1,
+    "byteOffset" : 0,
+    "byteLength" : 320,
+    "byteStride" : 16
+  }, {
+    "buffer" : 2,
+    "byteOffset" : 0,
+    "byteLength" : 128
+  }, {
+    "buffer" : 3,
+    "byteOffset" : 0,
+    "byteLength" : 240
+  } ],
+
+  "accessors" : [ {
+    "bufferView" : 0,
+    "byteOffset" : 0,
+    "componentType" : 5123,
+    "count" : 24,
+    "type" : "SCALAR",
+    "max" : [ 9 ],
+    "min" : [ 0 ]
+  }, {
+    "bufferView" : 1,
+    "byteOffset" : 0,
+    "componentType" : 5126,
+    "count" : 10,
+    "type" : "VEC3",
+    "max" : [ 1.0, 2.0, 0.0 ],
+    "min" : [ 0.0, 0.0, 0.0 ]
+  }, {
+    "bufferView" : 2,
+    "byteOffset" : 0,
+    "componentType" : 5123,
+    "count" : 10,
+    "type" : "VEC4",
+    "max" : [ 0, 1, 0, 0 ],
+    "min" : [ 0, 1, 0, 0 ]
+  }, {
+    "bufferView" : 2,
+    "byteOffset" : 160,
+    "componentType" : 5126,
+    "count" : 10,
+    "type" : "VEC4",
+    "max" : [ 1.0, 1.0, 0.0, 0.0 ],
+    "min" : [ 0.0, 0.0, 0.0, 0.0 ]
+  }, {
+    "bufferView" : 3,
+    "byteOffset" : 0,
+    "componentType" : 5126,
+    "count" : 2,
+    "type" : "MAT4",
+    "max" : [ 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, -0.5, -1.0, 0.0, 1.0 ],
+    "min" : [ 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, -0.5, -1.0, 0.0, 1.0 ]
+  }, {
+    "bufferView" : 4,
+    "byteOffset" : 0,
+    "componentType" : 5126,
+    "count" : 12,
+    "type" : "SCALAR",
+    "max" : [ 5.5 ],
+    "min" : [ 0.0 ]
+  }, {
+    "bufferView" : 4,
+    "byteOffset" : 48,
+    "componentType" : 5126,
+    "count" : 12,
+    "type" : "VEC4",
+    "max" : [ 0.0, 0.0, 0.707, 1.0 ],
+    "min" : [ 0.0, 0.0, -0.707, 0.707 ]
+  } ],
+  
+  "asset" : {
+    "version" : "2.0"
+  }
+}

examples/skinning/skinning.cc

@@ -0,0 +1,252 @@
+#include "skinning.h"
+
+#include "../common/matrix.h"
+#include "../common/trackball.h"  // for quaternion
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Weverything"
+#endif
+
+#define HANDMADE_MATH_IMPLEMENTATION
+#include "HandmadeMath.h"
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+#include <cassert>
+#include <cstring>
+
+namespace example {
+
+struct Node {
+
+  float translation[3] = {0.0f, 0.0f, 0.0f};
+  float scale[4] = {1.0f, 1.0f, 1.0f};
+  float rotation[4] = {0.0f, 0.0f, 0.0f, 1.0f};
+
+
+  void update() {
+  }
+};
+
+static inline vec4 mix(vec4 x, vec4 y, float a) {
+  vec4 v;
+  v.f[0] = (1.0f - a) * x.f[0] + a * y.f[0];
+  v.f[1] = (1.0f - a) * x.f[1] + a * y.f[1];
+  v.f[2] = (1.0f - a) * x.f[2] + a * y.f[2];
+  v.f[3] = (1.0f - a) * x.f[3] + a * y.f[3];
+
+  return v;
+}
+
+void BuildTransofrmMatrix(const float translate[3],
+                          const float rotation[4],  // as quaternion in glTF
+                          const float scale[3], mat4 *transform_matrix) {
+  float T[4][4];
+  T[0][0] = 1.0f;
+  T[0][1] = 0.0f;
+  T[0][2] = 0.0f;
+  T[0][3] = 0.0f;
+
+  T[1][0] = 0.0f;
+  T[1][1] = 1.0f;
+  T[1][2] = 0.0f;
+  T[1][3] = 0.0f;
+
+  T[2][0] = 0.0f;
+  T[2][1] = 0.0f;
+  T[2][2] = 1.0f;
+  T[2][3] = 0.0f;
+
+  T[3][0] = translate[0];
+  T[3][1] = translate[1];
+  T[3][2] = translate[2];
+  T[3][3] = 1.0f;
+
+  float R[4][4];
+
+  build_rotmatrix(R, rotation);
+
+  float S[4][4];
+  S[0][0] = scale[0];
+  S[0][1] = 0.0f;
+  S[0][2] = 0.0f;
+  S[0][3] = 0.0f;
+
+  S[1][0] = 0.0f;
+  S[1][1] = scale[1];
+  S[1][2] = 0.0f;
+  S[1][3] = 0.0f;
+
+  S[2][0] = 0.0f;
+  S[2][1] = 0.0f;
+  S[2][2] = scale[2];
+  S[2][3] = 0.0f;
+
+  S[3][0] = 0.0f;
+  S[3][1] = 0.0f;
+  S[3][2] = 0.0f;
+  S[3][3] = 1.0f;
+
+  float RS[4][4];
+
+  Matrix::Mult(RS, R, S);
+
+  Matrix::Mult(transform_matrix->m, T, RS);
+}
+
+void ComputeJointMatrices(
+    const std::vector<mat4> global_transform_of_nodes,
+    const std::vector<mat4> global_transform_of_joint_nodes,
+    const std::vector<mat4> inverse_bind_matrix_for_joints,
+    std::vector<mat4> *output_joint_matrices) {
+  const size_t n = global_transform_of_nodes.size();
+
+  output_joint_matrices->resize(n);
+
+  for (size_t i = 0; i < n; i++) {
+    mat4 g_inv = global_transform_of_nodes[i];
+    Matrix::Inverse(g_inv.m);
+
+    mat4 g_joint = global_transform_of_joint_nodes[i];
+    mat4 inverse_bind_matrix = inverse_bind_matrix_for_joints[i];
+
+    float a[4][4];  // temp matrix
+    Matrix::Mult(a, g_joint.m, inverse_bind_matrix.m);
+
+    Matrix::Mult((*output_joint_matrices)[i].m, g_inv.m, a);
+  }
+}
+
+void Skining(const std::vector<float> vertices,
+             const std::vector<float> weights, const std::vector<size_t> joints,
+             const size_t num_skinning_weights,
+             const std::vector<mat4> joint_matrices, const float t,
+             std::vector<float> *skinned_vertices) {
+  assert((vertices.size() % 4) == 0);
+  const size_t num_vertices = vertices.size() / 4;
+
+  skinned_vertices->resize(vertices.size());
+
+  // TODO(syoyo): Ensure sum(weights) = 1.0;
+
+  for (size_t v = 0; v < num_vertices; v++) {
+    const float *w_p = weights.data() + v * num_skinning_weights;
+    const size_t *j_p = joints.data() + v * num_skinning_weights;
+
+    mat4 skin_mat;
+    memset(skin_mat.m, 0, sizeof(float) * 4 * 4);
+
+    for (size_t k = 0; k < num_skinning_weights; k++) {
+      const float w = w_p[k];
+      const mat4 &m = joint_matrices[j_p[k]];
+
+      for (size_t j = 0; j < 4; j++) {
+        for (size_t i = 0; i < 4; i++) {
+          skin_mat.m[j][i] += w * m.m[j][i];
+        }
+      }
+    }
+
+    // M = lerp I and skin_mat
+    mat4 M;
+
+    mat4 I;
+    Matrix::Identity(I.m);
+
+    for (size_t j = 0; j < 4; j++) {
+      for (size_t i = 0; i < 4; i++) {
+        M.m[j][i] = I.m[j][i] * t + (1.0f - t) * skin_mat.m[j][i];
+      }
+    }
+
+    float vtx[4];
+    vtx[0] = vertices[4 * v + 0];
+    vtx[1] = vertices[4 * v + 1];
+    vtx[2] = vertices[4 * v + 2];
+    vtx[3] = vertices[4 * v + 3];
+
+    float ret[4];
+    Matrix::MultV4(ret, M.m, vtx);
+  }
+}
+
+void UpdateAnimation(std::vector<Animation> &animations, uint32_t index,
+                     float time, std::vector<Node*> &nodes) {
+  if (index > uint32_t(animations.size() - 1)) {
+    return;
+  }
+
+  const Animation &animation = animations[index];
+
+  bool updated = false;
+  for (auto &channel : animation.channels) {
+    const AnimationSampler &sampler = animation.samplers[channel.samplerIndex];
+    if (sampler.inputs.size() > sampler.outputsVec4.size()) {
+      continue;
+    }
+
+    // TODO(LTE): support interpolation other than LINEAR
+    for (size_t i = 0; i < sampler.inputs.size() - 1; i++) {
+      if ((time >= sampler.inputs[i]) && (time <= sampler.inputs[i + 1])) {
+        float u = std::max(0.0f, time - sampler.inputs[i]) /
+                  (sampler.inputs[i + 1] - sampler.inputs[i]);
+        if (u <= 1.0f) {
+          switch (channel.path) {
+            case AnimationChannel::PathType::TRANSLATION: {
+              example::vec4 trans =
+                  mix(sampler.outputsVec4[i], sampler.outputsVec4[i + 1], u);
+              channel.node->translation[0] = trans.f[0];
+              channel.node->translation[1] = trans.f[1];
+              channel.node->translation[2] = trans.f[2];
+              // drop w
+              break;
+            }
+            case AnimationChannel::PathType::SCALE: {
+              example::vec4 scale =
+                  mix(sampler.outputsVec4[i], sampler.outputsVec4[i + 1], u);
+              channel.node->scale[0] = scale.f[0];
+              channel.node->scale[1] = scale.f[1];
+              channel.node->scale[2] = scale.f[2];
+              break;
+            }
+            case AnimationChannel::PathType::ROTATION: {
+
+              hmm_quaternion q1 = HMM_Quaternion(
+               sampler.outputsVec4[i].f[0],
+               sampler.outputsVec4[i].f[1],
+               sampler.outputsVec4[i].f[2],
+               sampler.outputsVec4[i].f[3]);
+
+              hmm_quaternion q2 = HMM_Quaternion(
+               sampler.outputsVec4[i + 1].f[0],
+               sampler.outputsVec4[i + 1].f[1],
+               sampler.outputsVec4[i + 1].f[2],
+               sampler.outputsVec4[i + 1].f[3]);
+
+              hmm_quaternion q = HMM_NormalizeQuaternion(HMM_Slerp(q1, u, q2));
+
+              channel.node->rotation[0] = q.Elements[0];
+              channel.node->rotation[1] = q.Elements[1];
+              channel.node->rotation[2] = q.Elements[2];
+              channel.node->rotation[3] = q.Elements[3];
+
+              break;
+            }
+          }
+          updated = true;
+        }
+      }
+    }
+  }
+
+  if (updated) {
+    for (auto &node : nodes) {
+      node->update();
+    }
+  }
+}
+
+}  // namespace example

examples/skinning/skinning.h

@@ -0,0 +1,95 @@
+#ifndef EXAMPLE_SKINNING_H_
+#define EXAMPLE_SKINNING_H_
+
+#include <vector>
+#include <cstddef>
+#include <cstdint>
+#include <string>
+#include <limits>
+
+namespace example {
+
+struct mat4 {
+  float m[4][4];
+};
+
+struct vec4 {
+  float f[4];
+};
+
+// glTF node
+struct Node;
+
+
+struct AnimationChannel {
+  enum PathType { TRANSLATION, ROTATION, SCALE };
+  PathType path;
+  Node *node;
+  uint32_t samplerIndex;
+};
+
+struct AnimationSampler {
+  enum InterpolationType { LINEAR, STEP, CUBICSPLINE };
+  InterpolationType interpolation;
+  std::vector<float> inputs;
+  std::vector<example::vec4> outputsVec4;
+};
+
+struct Animation {
+  std::string name;
+  std::vector<AnimationSampler> samplers;
+  std::vector<AnimationChannel> channels;
+  float start = std::numeric_limits<float>::max();
+  float end = std::numeric_limits<float>::min();
+};
+
+///
+/// Utility function to build transformation matrix from translate/rotation/scale
+///
+/// https://github.com/KhronosGroup/glTF-Tutorials/blob/master/gltfTutorial/gltfTutorial_004_ScenesNodes.md
+///
+/// M = T * R * S
+///
+void BuildTransofrmMatrix(
+  const float translate[3],
+  const float rotation[4], // as quaternion in glTF
+  const float scale[3],
+  mat4 *transform_matrix);
+  
+
+///
+/// Compute joint matrices.
+///
+/// jointMatrix(j) =
+///   globalTransformOfNodeThatTheMeshIsAttachedTo^-1 *
+///   globalTransformOfJointNode(j) *
+///   inverseBindMatrixForJoint(j);
+///
+
+void ComputeJointMatrices(
+  const std::vector<mat4> global_transform_of_nodes,
+  const std::vector<mat4> global_transform_of_joint_nodes,
+  const std::vector<mat4> inverse_bind_matrix_for_joints,
+  std::vector<mat4> output_joint_matrices);
+
+
+///
+///
+/// @param[in] vertices Input vertices(# of elements = num_vertices * 4(xyzw))
+/// @param[in] weights Linearized weights(# of elements = num_vertices * num_skinning_weights)
+/// @param[in] weights Linearized weights(# of elements = num_vertices * num_skinning_weights)
+/// @param[in] num_weights Linearized weights(# of elements = num_vertices * 
+/// @param[in] joint_matrices Array of joint matricies.
+/// @param[in] t Interpolator. [0.0, 1.0]
+/// @param[in] skinned_vertices Resulting skinned vertices
+///
+void Skining(const std::vector<float> vertices,
+             const std::vector<float> weights, const std::vector<size_t> joints,
+             const size_t num_skinning_weights,
+             const std::vector<mat4> joint_matrices,
+             const float t,
+             std::vector<float> *skinned_vertices);
+
+}  // namespace example
+
+#endif  // EXAMPLE_SKINNING_H_

examples/validator/CMakeLists.txt

@@ -45,9 +45,3 @@ endif()
 
 # test-zone
 # enable_testing()
-
-install ( TARGETS
-  tinygltf-validator
-  DESTINATION
-  bin
-  )

loader_example.cc

@@ -30,7 +30,8 @@ static std::string PrintMode(int mode) {
   } else if (mode == TINYGLTF_MODE_TRIANGLE_STRIP) {
     return "TRIANGLE_STRIP";
   }
-  return "**UNKNOWN**";
+
+  return "**UNKNOWN**(" + std::to_string(mode) + ")";
 }
 
 static std::string PrintTarget(int target) {
@@ -39,7 +40,7 @@ static std::string PrintTarget(int target) {
   } else if (target == 34963) {
     return "GL_ELEMENT_ARRAY_BUFFER";
   } else {
-    return "**UNKNOWN**";
+    return "**UNKNOWN**(" + std::to_string(target) + ")";
   }
 }
 
@@ -63,7 +64,7 @@ static std::string PrintType(int ty) {
   } else if (ty == TINYGLTF_TYPE_MAT4) {
     return "MAT4";
   }
-  return "**UNKNOWN**";
+  return "**UNKNOWN**(" + std::to_string(ty) + ")";
 }
 
 static std::string PrintComponentType(int ty) {
@@ -85,7 +86,7 @@ static std::string PrintComponentType(int ty) {
     return "DOUBLE";
   }
 
-  return "**UNKNOWN**";
+  return "**UNKNOWN**(" + std::to_string(ty) + ")";
 }
 
 #if 0
@@ -147,7 +148,7 @@ static std::string PrintWrapMode(int mode) {
     return "MIRRORED_REPEAT";
   }
 
-  return "**UNKNOWN**";
+  return "**UNKNOWN**(" + std::to_string(mode) + ")";
 }
 
 static std::string PrintFilterMode(int mode) {
@@ -164,7 +165,7 @@ static std::string PrintFilterMode(int mode) {
   } else if (mode == TINYGLTF_TEXTURE_FILTER_LINEAR_MIPMAP_LINEAR) {
     return "LINEAR_MIPMAP_LINEAR";
   }
-  return "**UNKNOWN**";
+  return "**UNKNOWN**(" + std::to_string(mode) + ")";
 }
 
 static std::string PrintIntArray(const std::vector<int> &arr) {
@@ -175,10 +176,7 @@ static std::string PrintIntArray(const std::vector<int> &arr) {
   std::stringstream ss;
   ss << "[ ";
   for (size_t i = 0; i < arr.size(); i++) {
-    ss << arr[i];
-    if (i != arr.size() - 1) {
-      ss << ", ";
-    }
+    ss << arr[i] << ((i != arr.size() - 1) ? ", " : "");
   }
   ss << " ]";
 
@@ -193,10 +191,7 @@ static std::string PrintFloatArray(const std::vector<double> &arr) {
   std::stringstream ss;
   ss << "[ ";
   for (size_t i = 0; i < arr.size(); i++) {
-    ss << arr[i];
-    if (i != arr.size() - 1) {
-      ss << ", ";
-    }
+    ss << arr[i] << ((i != arr.size() - 1) ? ", " : "");
   }
   ss << " ]";
 
@@ -234,8 +229,7 @@ static std::string PrintParameterMap(const tinygltf::ParameterMap &pmap) {
 #endif
 
 static std::string PrintValue(const std::string &name,
-                              const tinygltf::Value &value, const int indent,
-                              const bool tag = true) {
+                              const tinygltf::Value &value, const int indent, const bool tag = true) {
   std::stringstream ss;
 
   if (value.IsObject()) {
@@ -249,36 +243,36 @@ static std::string PrintValue(const std::string &name,
     if (tag) {
       ss << Indent(indent) << name << " : " << value.Get<std::string>();
     } else {
-      ss << Indent(indent) << value.Get<std::string>() << " ";
+      ss << " " << value.Get<std::string>() << " ";
     }
   } else if (value.IsBool()) {
     if (tag) {
       ss << Indent(indent) << name << " : " << value.Get<bool>();
     } else {
-      ss << Indent(indent) << value.Get<bool>() << " ";
+      ss << " " << value.Get<bool>() << " ";
     }
   } else if (value.IsNumber()) {
     if (tag) {
       ss << Indent(indent) << name << " : " << value.Get<double>();
     } else {
-      ss << Indent(indent) << value.Get<double>() << " ";
+      ss << " " << value.Get<double>() << " ";
     }
   } else if (value.IsInt()) {
     if (tag) {
       ss << Indent(indent) << name << " : " << value.Get<int>();
     } else {
-      ss << Indent(indent) << value.Get<int>() << " ";
+      ss << " " << value.Get<int>() << " ";
     }
   } else if (value.IsArray()) {
-    // TODO(syoyo): Better pretty printing of array item
-    ss << Indent(indent) << name << " [ \n";
+    ss << Indent(indent) << name << " [ ";
     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 << PrintValue("", value.Get(int(i)), indent + 1, /* tag */false);
+      if (i != (value.ArrayLen()-1)) {
+        ss << ", ";
       }
+
     }
-    ss << "\n" << Indent(indent) << "] ";
+    ss << Indent(indent) << "] ";
   }
 
   // @todo { binary }
@@ -322,15 +316,6 @@ static void DumpStringIntMap(const std::map<std::string, int> &m, int indent) {
   }
 }
 
-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;
@@ -342,80 +327,17 @@ static void DumpPrimitive(const tinygltf::Primitive &primitive, int indent) {
             << 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 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 Dump(const tinygltf::Model &model) {
@@ -488,30 +410,6 @@ static void Dump(const tinygltf::Model &model) {
         }
         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;
-      }
     }
   }
 
@@ -570,21 +468,6 @@ static void Dump(const tinygltf::Model &model) {
       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";
-      }
     }
   }
 
@@ -595,21 +478,6 @@ static void Dump(const tinygltf::Model &model) {
       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";
-      }
     }
   }
 
@@ -618,55 +486,16 @@ static void Dump(const tinygltf::Model &model) {
               << 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) << "name         : " << material.name << std::endl;
       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";
-      }
     }
   }
 
@@ -690,18 +519,6 @@ static void Dump(const tinygltf::Model &model) {
       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";
-      }
     }
   }
 
@@ -714,18 +531,6 @@ static void Dump(const tinygltf::Model &model) {
       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";
-      }
     }
   }
 
@@ -747,20 +552,6 @@ static void Dump(const tinygltf::Model &model) {
       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";
-      }
     }
   }
 
@@ -793,61 +584,12 @@ static void Dump(const tinygltf::Model &model) {
                   << "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;
+    std::cout << "extensions(items=" << model.extensions.size() << ")" << std::endl;
     DumpExtensions(model.extensions, 1);
   }
 }
@@ -858,39 +600,29 @@ int main(int argc, char **argv) {
     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 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());
+    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());
+    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());
   }

models/BoundsChecking/integer-out-of-bounds.gltf

@@ -1,67 +0,0 @@
-{
-  "scenes": [
-    {
-      "nodes": [0]
-    }
-  ],
-  "nodes": [
-    {
-      "mesh": 0
-    }
-  ],
-  "meshes": [
-    {
-      "primitives": [
-        {
-          "attributes": {
-            "POSITION": 1
-          },
-          "indices": 0
-        }
-      ]
-    }
-  ],
-  "buffers": [
-    {
-      "uri": "simpleTriangle.bin",
-      "byteLength": 44
-    }
-  ],
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteOffset": 0,
-      "byteLength": 1e300,
-      "target": 34963
-    },
-    {
-      "buffer": 0,
-      "byteOffset": 8,
-      "byteLength": 36,
-      "target": 34962
-    }
-  ],
-  "accessors": [
-    {
-      "bufferView": 0,
-      "byteOffset": 0,
-      "componentType": 5123,
-      "count": 3,
-      "type": "SCALAR",
-      "max": [2],
-      "min": [0]
-    },
-    {
-      "bufferView": 1,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 3,
-      "type": "VEC3",
-      "max": [1, 1, 0],
-      "min": [0, 0, 0]
-    }
-  ],
-  "asset": {
-    "version": "2.0"
-  }
-}

models/BoundsChecking/invalid-buffer-index.gltf

@@ -1,53 +0,0 @@
-{
-  "scenes": [],
-  "nodes": [],
-  "meshes": [
-    {
-      "primitives": [
-        {
-          "attributes": {},
-          "indices": 0
-        }
-      ]
-    }
-  ],
-  "buffers": [
-    {
-      "uri": "simpleTriangle.bin",
-      "byteLength": 44
-    }
-  ],
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteOffset": 0,
-      "byteLength": 6,
-      "target": 34963
-    },
-    {
-      "buffer": 1,
-      "byteOffset": 0,
-      "byteLength": 6,
-      "target": 34963
-    }
-  ],
-  "images": [
-    {
-      "bufferView": 1,
-      "mimeType": "image/png"
-    }
-  ],
-  "accessors": [
-    {
-      "bufferView": 0,
-      "componentType": 5123,
-      "count": 3,
-      "type": "SCALAR",
-      "max": [2],
-      "min": [0]
-    }
-  ],
-  "asset": {
-    "version": "2.0"
-  }
-}

models/BoundsChecking/invalid-buffer-view-index.gltf

@@ -1,36 +0,0 @@
-{
-  "scenes": [],
-  "nodes": [],
-  "buffers": [],
-  "meshes": [
-    {
-      "primitives": [
-        {
-          "attributes": {},
-          "indices": 0
-        }
-      ]
-    }
-  ],
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteOffset": 0,
-      "byteLength": 6,
-      "target": 34963
-    }
-  ],
-  "accessors": [
-    {
-      "bufferView": 1,
-      "componentType": 5123,
-      "count": 3,
-      "type": "SCALAR",
-      "max": [2],
-      "min": [0]
-    }
-  ],
-  "asset": {
-    "version": "2.0"
-  }
-}

models/BoundsChecking/invalid-primitive-indices.gltf

@@ -1,36 +0,0 @@
-{
-  "scenes": [],
-  "nodes": [],
-  "buffers": [],
-  "meshes": [
-    {
-      "primitives": [
-        {
-          "attributes": {},
-          "indices": 1
-        }
-      ]
-    }
-  ],
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteOffset": 0,
-      "byteLength": 6,
-      "target": 34963
-    }
-  ],
-  "accessors": [
-    {
-      "bufferView": 1,
-      "componentType": 5123,
-      "count": 3,
-      "type": "SCALAR",
-      "max": [2],
-      "min": [0]
-    }
-  ],
-  "asset": {
-    "version": "2.0"
-  }
-}

models/Cube-texture-ext/Cube-textransform.gltf

@@ -1,224 +0,0 @@
-{
-  "accessors": [
-    {
-      "bufferView": 0,
-      "byteOffset": 0,
-      "componentType": 5123,
-      "count": 36,
-      "max": [
-        35
-      ],
-      "min": [
-        0
-      ],
-      "type": "SCALAR"
-    },
-    {
-      "bufferView": 1,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 36,
-      "max": [
-        1,
-        1,
-        1.000001
-      ],
-      "min": [
-        -1,
-        -1,
-        -1
-      ],
-      "type": "VEC3"
-    },
-    {
-      "bufferView": 2,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 36,
-      "max": [
-        1,
-        1,
-        1
-      ],
-      "min": [
-        -1,
-        -1,
-        -1
-      ],
-      "type": "VEC3"
-    },
-    {
-      "bufferView": 3,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 36,
-      "max": [
-        1,
-        -0,
-        -0,
-        1
-      ],
-      "min": [
-        0,
-        -0,
-        -1,
-        -1
-      ],
-      "type": "VEC4"
-    },
-    {
-      "bufferView": 4,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 36,
-      "max": [
-        1,
-        1
-      ],
-      "min": [
-        -1,
-        -1
-      ],
-      "type": "VEC2"
-    }
-  ],
-  "asset": {
-    "generator": "VKTS glTF 2.0 exporter",
-    "version": "2.0"
-  },
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteLength": 72,
-      "byteOffset": 0,
-      "target": 34963
-    },
-    {
-      "buffer": 0,
-      "byteLength": 432,
-      "byteOffset": 72,
-      "target": 34962
-    },
-    {
-      "buffer": 0,
-      "byteLength": 432,
-      "byteOffset": 504,
-      "target": 34962
-    },
-    {
-      "buffer": 0,
-      "byteLength": 576,
-      "byteOffset": 936,
-      "target": 34962
-    },
-    {
-      "buffer": 0,
-      "byteLength": 288,
-      "byteOffset": 1512,
-      "target": 34962
-    }
-  ],
-  "buffers": [
-    {
-      "byteLength": 1800,
-      "uri": "Cube.bin"
-    }
-  ],
-  "images": [
-    {
-      "0comment": "Use Cube_MetallicRoughness.png to reduce scene filesize",
-      "uri": "Cube_MetallicRoughness.png"
-    },
-    {
-      "uri": "Cube_MetallicRoughness.png"
-    }
-  ],
-  "materials": [
-    {
-      "emissiveTexture": {
-        "index": 0,
-        "extensions": {
-          "KHR_texture_transform": {
-            "offset": [
-              0,
-              1
-            ],
-            "scale": [
-              1,
-              -1
-            ]
-          }
-        }
-      }
-    },
-    {
-      "name": "Cube",
-      "pbrMetallicRoughness": {
-        "baseColorTexture": {
-          "index": 0
-        },
-        "metallicRoughnessTexture": {
-          "index": 1,
-          "extensions": {
-            "KHR_texture_transform": {
-              "offset": [
-                0,
-                1
-              ],
-              "rotation": 1.57079632679,
-              "scale": [
-                0.5,
-                0.5
-              ]
-            }
-          }
-        }
-      }
-    }
-  ],
-  "meshes": [
-    {
-      "name": "Cube",
-      "primitives": [
-        {
-          "attributes": {
-            "NORMAL": 2,
-            "POSITION": 1,
-            "TANGENT": 3,
-            "TEXCOORD_0": 4
-          },
-          "indices": 0,
-          "material": 0,
-          "mode": 4
-        }
-      ]
-    }
-  ],
-  "nodes": [
-    {
-      "mesh": 0,
-      "name": "Cube"
-    }
-  ],
-  "samplers": [
-    {}
-  ],
-  "scene": 0,
-  "scenes": [
-    {
-      "nodes": [
-        0
-      ]
-    }
-  ],
-  "textures": [
-    {
-      "sampler": 0,
-      "source": 0
-    },
-    {
-      "sampler": 0,
-      "source": 1
-    }
-  ]
-}

models/Cube-texture-ext/README.md

@@ -1,6 +0,0 @@
-Added KHR_texture_transform property to Cube scene.
-
-License: Donated by Norbert Nopper for glTF testing.
-
-https://github.com/KhronosGroup/glTF-Sample-Models/tree/master/2.0/Cube
-

models/CubeImageUriSpaces/CubeImageUriMultipleSpaces.gltf

@@ -1,171 +0,0 @@
-{
-  "asset": {
-    "version": "2.0"
-  },
-  "scenes": [
-    {
-      "nodes": [
-        0
-      ]
-    }
-  ],
-  "scene": 0,
-  "nodes": [
-    {
-      "mesh": 0
-    }
-  ],
-  "meshes": [
-    {
-      "primitives": [
-        {
-          "attributes": {
-            "NORMAL": 2,
-            "POSITION": 1,
-            "TEXCOORD_0": 3
-          },
-          "indices": 0,
-          "mode": 4,
-          "material": 0
-        }
-      ]
-    }
-  ],
-  "materials": [
-    {
-      "pbrMetallicRoughness": {
-        "baseColorTexture": {
-          "index": 0,
-          "texCoord": 0
-        },
-        "baseColorFactor": [
-          1,
-          1,
-          1,
-          1
-        ],
-        "metallicFactor": 1,
-        "roughnessFactor": 1
-      },
-      "emissiveFactor": [
-        0,
-        0,
-        0
-      ],
-      "alphaMode": "OPAQUE"
-    }
-  ],
-  "textures": [
-    {
-      "source": 0,
-      "sampler": 0
-    }
-  ],
-  "samplers": [
-    {
-      "wrapS": 33071,
-      "wrapT": 33071
-    }
-  ],
-  "images": [
-    {
-      "uri": " 2x2 image  has multiple      spaces.png"
-    }
-  ],
-  "accessors": [
-    {
-      "bufferView": 0,
-      "byteOffset": 0,
-      "componentType": 5121,
-      "count": 36,
-      "normalized": false,
-      "max": [
-        23
-      ],
-      "min": [
-        0
-      ],
-      "type": "SCALAR"
-    },
-    {
-      "bufferView": 1,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 24,
-      "normalized": false,
-      "max": [
-        0.5,
-        0.5,
-        0.5
-      ],
-      "min": [
-        -0.5,
-        -0.5,
-        -0.5
-      ],
-      "type": "VEC3"
-    },
-    {
-      "bufferView": 2,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 24,
-      "normalized": false,
-      "max": [
-        1,
-        1,
-        1
-      ],
-      "min": [
-        -1,
-        -1,
-        -1
-      ],
-      "type": "VEC3"
-    },
-    {
-      "bufferView": 3,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 24,
-      "normalized": false,
-      "max": [
-        1,
-        1
-      ],
-      "min": [
-        0,
-        0
-      ],
-      "type": "VEC2"
-    }
-  ],
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteOffset": 0,
-      "byteLength": 36
-    },
-    {
-      "buffer": 0,
-      "byteOffset": 36,
-      "byteLength": 288
-    },
-    {
-      "buffer": 0,
-      "byteOffset": 324,
-      "byteLength": 288
-    },
-    {
-      "buffer": 0,
-      "byteOffset": 612,
-      "byteLength": 192
-    }
-  ],
-  "buffers": [
-    {
-      "byteLength": 804,
-      "uri": "CubeImageUriSpaces.bin"
-    }
-  ]
-}

models/CubeImageUriSpaces/CubeImageUriSpaces.gltf

@@ -1,171 +0,0 @@
-{
-  "asset": {
-    "version": "2.0"
-  },
-  "scenes": [
-    {
-      "nodes": [
-        0
-      ]
-    }
-  ],
-  "scene": 0,
-  "nodes": [
-    {
-      "mesh": 0
-    }
-  ],
-  "meshes": [
-    {
-      "primitives": [
-        {
-          "attributes": {
-            "NORMAL": 2,
-            "POSITION": 1,
-            "TEXCOORD_0": 3
-          },
-          "indices": 0,
-          "mode": 4,
-          "material": 0
-        }
-      ]
-    }
-  ],
-  "materials": [
-    {
-      "pbrMetallicRoughness": {
-        "baseColorTexture": {
-          "index": 0,
-          "texCoord": 0
-        },
-        "baseColorFactor": [
-          1,
-          1,
-          1,
-          1
-        ],
-        "metallicFactor": 1,
-        "roughnessFactor": 1
-      },
-      "emissiveFactor": [
-        0,
-        0,
-        0
-      ],
-      "alphaMode": "OPAQUE"
-    }
-  ],
-  "textures": [
-    {
-      "source": 0,
-      "sampler": 0
-    }
-  ],
-  "samplers": [
-    {
-      "wrapS": 33071,
-      "wrapT": 33071
-    }
-  ],
-  "images": [
-    {
-      "uri": "2x2 image has spaces.png"
-    }
-  ],
-  "accessors": [
-    {
-      "bufferView": 0,
-      "byteOffset": 0,
-      "componentType": 5121,
-      "count": 36,
-      "normalized": false,
-      "max": [
-        23
-      ],
-      "min": [
-        0
-      ],
-      "type": "SCALAR"
-    },
-    {
-      "bufferView": 1,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 24,
-      "normalized": false,
-      "max": [
-        0.5,
-        0.5,
-        0.5
-      ],
-      "min": [
-        -0.5,
-        -0.5,
-        -0.5
-      ],
-      "type": "VEC3"
-    },
-    {
-      "bufferView": 2,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 24,
-      "normalized": false,
-      "max": [
-        1,
-        1,
-        1
-      ],
-      "min": [
-        -1,
-        -1,
-        -1
-      ],
-      "type": "VEC3"
-    },
-    {
-      "bufferView": 3,
-      "byteOffset": 0,
-      "componentType": 5126,
-      "count": 24,
-      "normalized": false,
-      "max": [
-        1,
-        1
-      ],
-      "min": [
-        0,
-        0
-      ],
-      "type": "VEC2"
-    }
-  ],
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteOffset": 0,
-      "byteLength": 36
-    },
-    {
-      "buffer": 0,
-      "byteOffset": 36,
-      "byteLength": 288
-    },
-    {
-      "buffer": 0,
-      "byteOffset": 324,
-      "byteLength": 288
-    },
-    {
-      "buffer": 0,
-      "byteOffset": 612,
-      "byteLength": 192
-    }
-  ],
-  "buffers": [
-    {
-      "byteLength": 804,
-      "uri": "CubeImageUriSpaces.bin"
-    }
-  ]
-}

models/Extensions-issue97/test.gltf

@@ -1,66 +0,0 @@
-
-{
-  "scenes" : [
-    {
-      "nodes" : [ 0 ]
-    }
-  ],
-  
-  "nodes" : [
-    {
-      "mesh" : 0
-    }
-  ],
-
-  "meshes" : [
-    {
-      "primitives" : [ {
-        "attributes" : {
-          "POSITION" : 0
-        }
-      } ]
-    }
-  ],
-
-  "buffers" : [
-    {
-      "uri" : "data:application/octet-stream;base64,AAAAAAAAAAAAAAAAAACAPwAAAAAAAAAAAAAAAAAAgD8AAAAA",
-      "byteLength" : 36
-    }
-  ],
-  "bufferViews" : [
-    {
-      "buffer" : 0,
-      "byteOffset" : 0,
-      "byteLength" : 36,
-      "target" : 34962
-    }
-  ],
-  "accessors" : [
-    {
-      "bufferView" : 0,
-      "byteOffset" : 0,
-      "componentType" : 5126,
-      "count" : 3,
-      "type" : "VEC3",
-      "max" : [ 1.0, 1.0, 0.0 ],
-      "min" : [ 0.0, 0.0, 0.0 ]
-    }
-  ],
-  
-  "asset" : {
-    "version" : "2.0"
-  },
-
-  "materials" : [
-    { "name" : "WHITE",
-      "extensions": {
-        "VENDOR_material_some_ext" : { }
-      }
-    }
-  ],
-  
-  "extensionsUsed" : [
-    "VENDOR_material_some_ext"
-  ]
-}

models/Extensions-overwrite-issue261/issue-261.gltf

@@ -1,376 +0,0 @@
-{
-  "accessors": [
-    {
-      "bufferView": 0,
-      "componentType": 5126,
-      "count": 8,
-      "max": [
-        0.5,
-        0.5,
-        0.5
-      ],
-      "min": [
-        -0.5,
-        -0.5,
-        -0.5
-      ],
-      "type": "VEC3"
-    },
-    {
-      "bufferView": 1,
-      "componentType": 5125,
-      "count": 36,
-      "type": "SCALAR"
-    }
-  ],
-  "asset": {
-    "copyright": "NVIDIA Corporation",
-    "generator": "Iray glTF plugin",
-    "version": "2.0"
-  },
-  "bufferViews": [
-    {
-      "buffer": 0,
-      "byteLength": 96,
-      "byteStride": 12
-    },
-    {
-      "buffer": 0,
-      "byteLength": 144,
-      "byteOffset": 96
-    }
-  ],
-  "buffers": [
-    {
-      "byteLength": 240,
-      "uri": "issue-261.bin"
-    }
-  ],
-  "cameras": [
-    {
-      "extensions": {
-        "NV_Iray": {
-          "mip_burn_highlights": 0.699999988079071,
-          "mip_burn_highlights_per_component": false,
-          "mip_camera_shutter": 4.0,
-          "mip_cm2_factor": 1.0,
-          "mip_crush_blacks": 0.5,
-          "mip_f_number": 1.0,
-          "mip_film_iso": 100.0,
-          "mip_gamma": 2.200000047683716,
-          "mip_saturation": 1.0,
-          "mip_vignetting": 0.00019999999494757503,
-          "mip_whitepoint": [
-            1.0,
-            1.0,
-            1.0,
-            1.0
-          ],
-          "tm_enable_tonemapper": true,
-          "tm_tonemapper": "mia_exposure_photographic"
-        }
-      },
-      "extras": {
-        "resolution": [
-          640,
-          480
-        ]
-      },
-      "name": "default",
-      "perspective": {
-        "aspectRatio": 1.3333333730697632,
-        "yfov": 0.9272952079772949,
-        "zfar": 1000.0,
-        "znear": 0.1
-      },
-      "type": "perspective"
-    }
-  ],
-  "extensions": {
-    "KHR_lights_punctual": {
-      "lights": [
-        {
-          "color": [
-            1.0,
-            1.0,
-            1.0
-          ],
-          "intensity": 1000.0,
-          "name": "light",
-          "type": "point"
-        }
-      ]
-    },
-    "NV_MDL": {
-      "modules": [
-        "mdl::base",
-        "mdl::nvidia::core_definitions",
-        "mdl::state"
-      ],
-      "shaders": [
-        {
-          "definition": "mdl::base::environment_spherical(texture_2d)",
-          "name": "env_shd"
-        },
-        {
-          "arguments": {
-            "base_color": [
-              0.0055217444896698,
-              0.36859095096588135,
-              0.0041161770932376385
-            ],
-            "normal=": 2
-          },
-          "definition": "mdl::nvidia::core_definitions::flex_material",
-          "name": "cube_instance_material"
-        },
-        {
-          "definition": "mdl::state::normal()",
-          "name": "mdl::state::normal_341"
-        },
-        {
-          "arguments": {
-            "base_color": [
-              0.0055217444896698,
-              0.36859095096588135,
-              0.0041161770932376385
-            ],
-            "normal=": 4
-          },
-          "definition": "mdl::nvidia::core_definitions::flex_material",
-          "name": "cube_instance_material"
-        },
-        {
-          "definition": "mdl::state::normal()",
-          "name": "mdl::state::normal_341"
-        }
-      ]
-    }
-  },
-  "extensionsUsed": [
-    "NV_MDL",
-    "NV_Iray",
-    "KHR_lights_punctual"
-  ],
-  "materials": [
-    {
-      "doubleSided": true,
-      "extras": {
-        "mdl_shader": 1
-      },
-      "name": "cube_instance_material",
-      "pbrMetallicRoughness": {
-        "baseColorFactor": [
-          0.0055217444896698,
-          0.36859095096588135,
-          0.0041161770932376385,
-          1.0
-        ]
-      }
-    }
-  ],
-  "meshes": [
-    {
-      "name": "cube",
-      "primitives": [
-        {
-          "attributes": {
-            "POSITION": 0
-          },
-          "indices": 1,
-          "material": 0,
-          "mode": 4
-        }
-      ]
-    }
-  ],
-  "nodes": [
-    {
-      "camera": 0,
-      "extensions": {
-        "NV_Iray": {
-          "iview:fkey": -1,
-          "iview:fov": 53.130104064941406,
-          "iview:interest": [
-            0.1342654824256897,
-            -0.14356137812137604,
-            0.037264324724674225
-          ],
-          "iview:position": [
-            0.9729073643684387,
-            1.2592438459396362,
-            2.4199187755584717
-          ],
-          "iview:roll": 0.0,
-          "iview:up": [
-            0.0,
-            1.0,
-            0.0
-          ]
-        }
-      },
-      "matrix": [
-        0.9432751389105357,
-        -1.1769874756875739e-16,
-        -0.3320120665176343,
-        0.0,
-        -0.16119596696756341,
-        0.8742297945345237,
-        -0.45797175303889276,
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-        0.290254840694694,
-        0.48551237507207207,
-        0.8246392308792816,
-        0.0,
-        0.9729073377709113,
-        1.2592438262175363,
-        2.419918748461627,
-        1.0
-      ],
-      "name": "CamInst"
-    },
-    {
-      "extensions": {
-        "NV_Iray": {
-          "caustic": true,
-          "caustic_cast": true,
-          "caustic_recv": true,
-          "face_back": true,
-          "face_front": true,
-          "finalgather": true,
-          "finalgather_cast": true,
-          "finalgather_recv": true,
-          "globillum": true,
-          "globillum_cast": true,
-          "globillum_recv": true,
-          "material=": 3,
-          "pickable": true,
-          "reflection_cast": true,
-          "reflection_recv": true,
-          "refraction_cast": true,
-          "refraction_recv": true,
-          "shadow_cast": true,
-          "shadow_recv": true,
-          "transparency_cast": true,
-          "transparency_recv": true,
-          "visible": true
-        }
-      },
-      "mesh": 0,
-      "name": "cube_instance"
-    },
-    {
-      "extensions": {
-        "KHR_lights_punctual": {
-          "light": 0
-        },
-        "NV_Iray": {
-          "shadow_cast": true,
-          "visible": false
-        }
-      },
-      "matrix": [
-        0.6988062355563571,
-        -7.76042172309776e-17,
-        -0.7153110128800992,
-        -0.0,
-        -0.4276881690736487,
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-        0.5601398979107212,
-        0.0,
-        2.3640632834071384,
-        2.465226204472449,
-        2.309515908392224,
-        1.0
-      ],
-      "name": "light_inst"
-    }
-  ],
-  "scene": 0,
-  "scenes": [
-    {
-      "extensions": {
-        "NV_Iray": {
-          "CP_canny_threshold1": 40,
-          "CP_canny_threshold2": 120,
-          "CP_color_quantization": 8,
-          "IVP_color": [
-            1.0,
-            0.0,
-            0.0,
-            1.0
-          ],
-          "TM_drago_bias": 0.8500000238418579,
-          "TM_drago_gamma2": 2.200000047683716,
-          "TM_drago_saturation": 1.0,
-          "TM_durand_contrast": 4.0,
-          "TM_durand_gamma": 2.200000047683716,
-          "TM_durand_saturation": 1.0,
-          "TM_durand_sigma_color": 2.0,
-          "TM_durand_sigma_space": 2.0,
-          "TM_linear_gamma": 2.200000047683716,
-          "TM_reinhard_color_adapt": 0.8999999761581421,
-          "TM_reinhard_gamma": 1.0,
-          "TM_reinhard_intensity": 0.0,
-          "TM_reinhard_light_adapt": 1.0,
-          "TM_reye_Ywhite": 1000000.0,
-          "TM_reye_bsize": 2,
-          "TM_reye_bthres": 3.0,
-          "TM_reye_gamma": 2.200000047683716,
-          "TM_reye_key": 0.5,
-          "TM_reye_saturation": 1.0,
-          "TM_reye_whitebalance": [
-            1.0,
-            0.9965101480484009,
-            0.9805564880371094,
-            0.0
-          ],
-          "environment_dome_depth": 200.0,
-          "environment_dome_height": 200.0,
-          "environment_dome_mode": "infinite",
-          "environment_dome_position": [
-            0.0,
-            0.0,
-            0.0
-          ],
-          "environment_dome_radius": 100.0,
-          "environment_dome_rotation_angle": 0.0,
-          "environment_dome_width": 200.0,
-          "environment_function=": 0,
-          "environment_function_intensity": 1.9900000095367432,
-          "iray_instancing": "off",
-          "iview::inline_color": [
-            1.0,
-            0.0,
-            0.0,
-            1.0
-          ],
-          "iview::inline_width": 1.0,
-          "iview::magnifier_size": 300,
-          "iview::offset": 10.0,
-          "iview::outline_color": [
-            0.0,
-            0.0,
-            0.0,
-            1.0
-          ],
-          "iview::outline_width": 2.0,
-          "iview::overview": true,
-          "iview::zoom_factor": 1.0,
-          "samples": 4.0,
-          "shadow_cast": true,
-          "shadow_recv": true
-        }
-      },
-      "nodes": [
-        0,
-        1,
-        2
-      ]
-    }
-  ]
-}

test_runner.py

@@ -14,7 +14,6 @@ import subprocess
 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"]
 # ---------------------------------
 

tests/fuzzer/README.md

@@ -1,46 +0,0 @@
-# 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
-```
-

tests/fuzzer/fuzz_gltf.cc

@@ -1,33 +0,0 @@
-#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;
-}
-

tests/fuzzer/meson.build

@@ -1,9 +0,0 @@
-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' )
-

tests/tester.cc

@@ -13,14 +13,6 @@
 #include <sstream>
 #include <fstream>
 
-static JsonDocument JsonConstruct(const char* str)
-{
-  JsonDocument doc;
-  JsonParse(doc, str, strlen(str));
-  return doc;
-}
-
-
 TEST_CASE("parse-error", "[parse]") {
 
   tinygltf::Model model;
@@ -28,7 +20,7 @@ TEST_CASE("parse-error", "[parse]") {
   std::string err;
   std::string warn;
 
-  bool ret = ctx.LoadASCIIFromString(&model, &err, &warn, "bora", static_cast<int>(strlen("bora")), /* basedir*/ "");
+  bool ret = ctx.LoadASCIIFromString(&model, &err, &warn, "bora", strlen("bora"), /* basedir*/ "");
 
   REQUIRE(false == ret);
 
@@ -45,370 +37,8 @@ TEST_CASE("datauri-in-glb", "[issue-79]") {
   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();
-    {
-      JsonDocument o;
-      double nan = std::numeric_limits<double>::quiet_NaN();
-      tinygltf::JsonAddMember(o, "int", 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();
-    {
-      JsonDocument o;
-      double nan = std::numeric_limits<double>::quiet_NaN();
-      tinygltf::JsonAddMember(o, "int", 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::Model model;
-  tinygltf::TinyGLTF ctx;
-  std::string err;
-  std::string warn;
-
-  // Test image file with single spaces.
-  bool ret = ctx.LoadASCIIFromFile(&model, &err, &warn, "../models/CubeImageUriSpaces/CubeImageUriSpaces.gltf");
-  if (!err.empty()) {
-    std::cerr << err << std::endl;
-  }
-
-  REQUIRE(true == ret);
-
-  // Test image file with a beginning space, trailing space, and greater than
-  // one consecutive spaces.
-  ret = ctx.LoadASCIIFromFile(&model, &err, &warn, "../models/CubeImageUriSpaces/CubeImageUriMultipleSpaces.gltf");
-  if (!err.empty()) {
-    std::cerr << err << std::endl;
-  }
-
-  REQUIRE(true == ret);
-}