Merge branch 'devel' into Selmar-generic_extension_support

small bugfix, serializer skipped texture samplers refering to first index.

README.md

@@ -50,7 +50,9 @@ If you are looking for old, C++03 version, please use `devel-picojson` branch.
 ## Projects using TinyGLTF
 
 * Physical based rendering with Vulkan using glTF 2.0 models https://github.com/SaschaWillems/Vulkan-glTF-PBR
-* Your projects here!(Plese send PR)
+* 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.
+* Your projects here! (Please send PR)
 
 ## TODOs
 
@@ -70,12 +72,13 @@ TinyGLTF uses the following third party libraries.
 
 * json.hpp : Copyright (c) 2013-2017 Niels Lohmann. MIT license.
 * base64 : Copyright (C) 2004-2008 René Nyffenegger
-* stb_image.h : v2.08 - public domain image loader - http://nothings.org/stb_image.h
+* stb_image.h : v2.08 - public domain image loader - [Github link](https://github.com/nothings/stb/blob/master/stb_image.h)
+* stb_image_write.h : v1.09 - public domain image writer - [Github link](https://github.com/nothings/stb/blob/master/stb_image_write.h)
 
 
 ## Build and example
 
-Copy `stb_image.h`, `json.hpp` and `tiny_gltf.h` to your project.
+Copy `stb_image.h`, `stb_image_write.h`, `json.hpp` and `tiny_gltf.h` to your project.
 
 ### Loading glTF 2.0 model
 
@@ -83,6 +86,7 @@ Copy `stb_image.h`, `json.hpp` and `tiny_gltf.h` to your project.
 // Define these only in *one* .cc file.
 #define TINYGLTF_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_IMPLEMENTATION
 // #define TINYGLTF_NOEXCEPTION // optional. disable exception handling.
 #include "tiny_gltf.h"
 
@@ -108,10 +112,17 @@ 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.
 
 ### Saving gltTF 2.0 model
-
-T.B.W.
+* [ ] Buffers.
+  * [x] To file
+  * [x] Embedded
+  * [ ] Draco compressed?
+* [x] Images
+  * [x] To file
+  * [x] Embedded
+* [ ] Binary(.glb)
 
 ## Running tests.
 

examples/raytrace/gltf-loader.cc

@@ -3,6 +3,7 @@
 #include <iostream>
 #include <memory>  // c++11
 #define TINYGLTF_IMPLEMENTATION
+#define TINYGLTF_NO_STB_IMAGE_WRITE
 #include <tiny_gltf.h>
 
 namespace example {

examples/saver/main.cc

@@ -3,11 +3,21 @@
 
 #define TINYGLTF_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
+
+//#define TINYGLTF_NO_STB_IMAGE_WRITE
+
+#ifndef TINYGLTF_NO_STB_IMAGE_WRITE
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#endif
+
+// If using a modern Microsoft Compiler, this define supress compilation
+// warnings in stb_image_write
+//#define STBI_MSC_SECURE_CRT
+
 #include "tiny_gltf.h"
 
-int main(int argc, char *argv[])
-{
-	if (argc != 3) {
+int main(int argc, char *argv[]) {
+  if (argc != 3) {
     std::cout << "Needs input.gltf output.gltf" << std::endl;
     return EXIT_FAILURE;
   }
@@ -17,6 +27,8 @@ int main(int argc, char *argv[])
   std::string err;
   std::string input_filename(argv[1]);
   std::string output_filename(argv[2]);
+  std::string embedded_filename =
+      output_filename.substr(0, output_filename.size() - 5) + "-Embedded.gltf";
 
   // assume ascii glTF.
   bool ret = loader.LoadASCIIFromFile(&model, &err, input_filename.c_str());
@@ -28,6 +40,10 @@ int main(int argc, char *argv[])
   }
   loader.WriteGltfSceneToFile(&model, output_filename);
 
-  return EXIT_SUCCESS;
+  // Embedd buffers and images
+#ifndef TINYGLTF_NO_STB_IMAGE_WRITE
+  loader.WriteGltfSceneToFile(&model, embedded_filename, true, true);
+#endif
 
+  return EXIT_SUCCESS;
 }

loader_example.cc

@@ -1,5 +1,6 @@
 #define TINYGLTF_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_IMPLEMENTATION
 #include "tiny_gltf.h"
 
 #include <cstdio>
@@ -210,6 +211,19 @@ static std::string PrintParameterValue(const tinygltf::Parameter &param) {
   }
 }
 
+#if 0
+static std::string PrintParameterMap(const tinygltf::ParameterMap &pmap) {
+  std::stringstream ss;
+
+  ss << pmap.size() << std::endl;
+  for (auto &kv : pmap) {
+    ss << kv.first << " : " << PrintParameterValue(kv.second) << std::endl;
+  }
+
+  return ss.str();
+}
+#endif
+
 static std::string PrintValue(const std::string &name,
                               const tinygltf::Value &value, const int indent) {
   std::stringstream ss;
@@ -287,6 +301,15 @@ static void DumpPrimitive(const tinygltf::Primitive &primitive, int indent) {
             << PrintValue("extras", primitive.extras, indent + 1) << std::endl;
 }
 
+static void DumpExtensions(const tinygltf::ExtensionMap &extension, const int indent)
+{
+  // TODO(syoyo): Print extensions
+  for (auto &e : extension) {
+    std::cout << Indent(indent) << e.first << std::endl;
+    //std::cout << Indent(indent+1) << PrintParameterMap(e.second);
+  }  
+}
+
 static void Dump(const tinygltf::Model &model) {
   std::cout << "=== Dump glTF ===" << std::endl;
   std::cout << "asset.copyright          : " << model.asset.copyright
@@ -307,6 +330,7 @@ static void Dump(const tinygltf::Model &model) {
     for (size_t i = 0; i < model.scenes.size(); i++) {
       std::cout << Indent(1) << "scene[" << i
                 << "] name  : " << model.scenes[i].name << std::endl;
+      DumpExtensions(model.scenes[i].extensions, 1);
     }
   }
 
@@ -530,6 +554,12 @@ static void Dump(const tinygltf::Model &model) {
       }
     }
   }
+  
+  // toplevel extensions
+  {
+    std::cout << "extensions(items=" << model.extensions.size() << ")" << std::endl;
+    DumpExtensions(model.extensions, 1);
+  }
 }
 
 int main(int argc, char **argv) {