medfall

cgltf.h (117448B)

---

 /**
  * cgltf - a single-file glTF 2.0 parser written in C99.
  *
  * Version: 1.1
  *
  * Website: https://github.com/jkuhlmann/cgltf
  *
  * Distributed under the MIT License, see notice at the end of this file.
  *
  * Building:
  * Include this file where you need the struct and function
  * declarations. Have exactly one source file where you define
  * `CGLTF_IMPLEMENTATION` before including this file to get the
  * function definitions.
  *
  * Reference:
  * `cgltf_result cgltf_parse(const cgltf_options*, const void*,
  * cgltf_size, cgltf_data**)` parses both glTF and GLB data. If
  * this function returns `cgltf_result_success`, you have to call
  * `cgltf_free()` on the created `cgltf_data*` variable.
  * Note that contents of external files for buffers and images are not
  * automatically loaded. You'll need to read these files yourself using
  * URIs in the `cgltf_data` structure.
  *
  * `cgltf_options` is the struct passed to `cgltf_parse()` to control
  * parts of the parsing process. You can use it to force the file type
  * and provide memory allocation callbacks. Should be zero-initialized
  * to trigger default behavior.
  *
  * `cgltf_data` is the struct allocated and filled by `cgltf_parse()`.
  * It generally mirrors the glTF format as described by the spec (see
  * https://github.com/KhronosGroup/glTF/tree/master/specification/2.0).
  *
  * `void cgltf_free(cgltf_data*)` frees the allocated `cgltf_data`
  * variable.
  *
  * `cgltf_result cgltf_load_buffers(const cgltf_options*, cgltf_data*,
  * const char* gltf_path)` can be optionally called to open and read buffer
  * files using the `FILE*` APIs. The `gltf_path` argument is the path to
  * the original glTF file, which allows the parser to resolve the path to
  * buffer files.
  *
  * `cgltf_result cgltf_load_buffer_base64(const cgltf_options* options,
  * cgltf_size size, const char* base64, void** out_data)` decodes
  * base64-encoded data content. Used internally by `cgltf_load_buffers()`
  * and may be useful if you're not dealing with normal files.
  *
  * `cgltf_result cgltf_parse_file(const cgltf_options* options, const
  * char* path, cgltf_data** out_data)` can be used to open the given
  * file using `FILE*` APIs and parse the data using `cgltf_parse()`.
  *
  * `cgltf_result cgltf_validate(cgltf_data*)` can be used to do additional
  * checks to make sure the parsed glTF data is valid.
  *
  * `cgltf_node_transform_local` converts the translation / rotation / scale properties of a node
  * into a mat4.
  *
  * `cgltf_node_transform_world` calls `cgltf_node_transform_local` on every ancestor in order
  * to compute the root-to-node transformation.
  *
  * `cgltf_accessor_read_float` reads a certain element from an accessor and converts it to
  * floating point, assuming that `cgltf_load_buffers` has already been called. The passed-in element
  * size is the number of floats in the output buffer, which should be in the range [1, 16]. Returns
  * false if the passed-in element_size is too small, or if the accessor is sparse.
  *
  * `cgltf_accessor_read_index` is similar to its floating-point counterpart, but it returns size_t
  * and only works with single-component data types.
  */
 #ifndef CGLTF_H_INCLUDED__
 #define CGLTF_H_INCLUDED__
 
 #include <stddef.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 typedef size_t cgltf_size;
 typedef float cgltf_float;
 typedef int cgltf_int;
 typedef int cgltf_bool;
 
 typedef enum cgltf_file_type
 {
 	cgltf_file_type_invalid,
 	cgltf_file_type_gltf,
 	cgltf_file_type_glb,
 } cgltf_file_type;
 
 typedef struct cgltf_options
 {
 	cgltf_file_type type; /* invalid == auto detect */
 	cgltf_size json_token_count; /* 0 == auto */
 	void* (*memory_alloc)(void* user, cgltf_size size);
 	void (*memory_free) (void* user, void* ptr);
 	void* memory_user_data;
 } cgltf_options;
 
 typedef enum cgltf_result
 {
 	cgltf_result_success,
 	cgltf_result_data_too_short,
 	cgltf_result_unknown_format,
 	cgltf_result_invalid_json,
 	cgltf_result_invalid_gltf,
 	cgltf_result_invalid_options,
 	cgltf_result_file_not_found,
 	cgltf_result_io_error,
 	cgltf_result_out_of_memory,
 } cgltf_result;
 
 typedef enum cgltf_buffer_view_type
 {
 	cgltf_buffer_view_type_invalid,
 	cgltf_buffer_view_type_indices,
 	cgltf_buffer_view_type_vertices,
 } cgltf_buffer_view_type;
 
 typedef enum cgltf_attribute_type
 {
 	cgltf_attribute_type_invalid,
 	cgltf_attribute_type_position,
 	cgltf_attribute_type_normal,
 	cgltf_attribute_type_tangent,
 	cgltf_attribute_type_texcoord,
 	cgltf_attribute_type_color,
 	cgltf_attribute_type_joints,
 	cgltf_attribute_type_weights,
 } cgltf_attribute_type;
 
 typedef enum cgltf_component_type
 {
 	cgltf_component_type_invalid,
 	cgltf_component_type_r_8, /* BYTE */
 	cgltf_component_type_r_8u, /* UNSIGNED_BYTE */
 	cgltf_component_type_r_16, /* SHORT */
 	cgltf_component_type_r_16u, /* UNSIGNED_SHORT */
 	cgltf_component_type_r_32u, /* UNSIGNED_INT */
 	cgltf_component_type_r_32f, /* FLOAT */
 } cgltf_component_type;
 
 typedef enum cgltf_type
 {
 	cgltf_type_invalid,
 	cgltf_type_scalar,
 	cgltf_type_vec2,
 	cgltf_type_vec3,
 	cgltf_type_vec4,
 	cgltf_type_mat2,
 	cgltf_type_mat3,
 	cgltf_type_mat4,
 } cgltf_type;
 
 typedef enum cgltf_primitive_type
 {
 	cgltf_primitive_type_points,
 	cgltf_primitive_type_lines,
 	cgltf_primitive_type_line_loop,
 	cgltf_primitive_type_line_strip,
 	cgltf_primitive_type_triangles,
 	cgltf_primitive_type_triangle_strip,
 	cgltf_primitive_type_triangle_fan,
 } cgltf_primitive_type;
 
 typedef enum cgltf_alpha_mode
 {
 	cgltf_alpha_mode_opaque,
 	cgltf_alpha_mode_mask,
 	cgltf_alpha_mode_blend,
 } cgltf_alpha_mode;
 
 typedef enum cgltf_animation_path_type {
 	cgltf_animation_path_type_invalid,
 	cgltf_animation_path_type_translation,
 	cgltf_animation_path_type_rotation,
 	cgltf_animation_path_type_scale,
 	cgltf_animation_path_type_weights,
 } cgltf_animation_path_type;
 
 typedef enum cgltf_interpolation_type {
 	cgltf_interpolation_type_linear,
 	cgltf_interpolation_type_step,
 	cgltf_interpolation_type_cubic_spline,
 } cgltf_interpolation_type;
 
 typedef enum cgltf_camera_type {
 	cgltf_camera_type_invalid,
 	cgltf_camera_type_perspective,
 	cgltf_camera_type_orthographic,
 } cgltf_camera_type;
 
 typedef enum cgltf_light_type {
 	cgltf_light_type_invalid,
 	cgltf_light_type_directional,
 	cgltf_light_type_point,
 	cgltf_light_type_spot,
 } cgltf_light_type;
 
 typedef struct cgltf_buffer
 {
 	cgltf_size size;
 	char* uri;
 	void* data; /* loaded by cgltf_load_buffers */
 } cgltf_buffer;
 
 typedef struct cgltf_buffer_view
 {
 	cgltf_buffer* buffer;
 	cgltf_size offset;
 	cgltf_size size;
 	cgltf_size stride; /* 0 == automatically determined by accessor */
 	cgltf_buffer_view_type type;
 } cgltf_buffer_view;
 
 typedef struct cgltf_accessor_sparse
 {
 	cgltf_size count;
 	cgltf_buffer_view* indices_buffer_view;
 	cgltf_size indices_byte_offset;
 	cgltf_component_type indices_component_type;
 	cgltf_buffer_view* values_buffer_view;
 	cgltf_size values_byte_offset;
 } cgltf_accessor_sparse;
 
 typedef struct cgltf_accessor
 {
 	cgltf_component_type component_type;
 	cgltf_bool normalized;
 	cgltf_type type;
 	cgltf_size offset;
 	cgltf_size count;
 	cgltf_size stride;
 	cgltf_buffer_view* buffer_view;
 	cgltf_bool has_min;
 	cgltf_float min[16];
 	cgltf_bool has_max;
 	cgltf_float max[16];
 	cgltf_bool is_sparse;
 	cgltf_accessor_sparse sparse;
 } cgltf_accessor;
 
 typedef struct cgltf_attribute
 {
 	char* name;
 	cgltf_attribute_type type;
 	cgltf_int index;
 	cgltf_accessor* data;
 } cgltf_attribute;
 
 typedef struct cgltf_image 
 {
 	char* name;
 	char* uri;
 	cgltf_buffer_view* buffer_view;
 	char* mime_type;
 } cgltf_image;
 
 typedef struct cgltf_sampler
 {
 	cgltf_int mag_filter;
 	cgltf_int min_filter;
 	cgltf_int wrap_s;
 	cgltf_int wrap_t;
 } cgltf_sampler;
 
 typedef struct cgltf_texture
 {
 	char* name;
 	cgltf_image* image;
 	cgltf_sampler* sampler;
 } cgltf_texture;
 
 typedef struct cgltf_texture_transform
 {
 	cgltf_float offset[2];
 	cgltf_float rotation;
 	cgltf_float scale[2];
 	cgltf_int texcoord;
 } cgltf_texture_transform;
 
 typedef struct cgltf_texture_view
 {	
 	cgltf_texture* texture;
 	cgltf_int texcoord;
 	cgltf_float scale; /* equivalent to strength for occlusion_texture */
 	cgltf_bool has_transform;
 	cgltf_texture_transform transform;
 } cgltf_texture_view;
 
 typedef struct cgltf_pbr_metallic_roughness
 {
 	cgltf_texture_view base_color_texture;
 	cgltf_texture_view metallic_roughness_texture;
 
 	cgltf_float base_color_factor[4];
 	cgltf_float metallic_factor;
 	cgltf_float roughness_factor;
 } cgltf_pbr_metallic_roughness;
 
 typedef struct cgltf_pbr_specular_glossiness
 {
 	cgltf_texture_view diffuse_texture;
 	cgltf_texture_view specular_glossiness_texture;
 
 	cgltf_float diffuse_factor[4];
 	cgltf_float specular_factor[3];
 	cgltf_float glossiness_factor;
 } cgltf_pbr_specular_glossiness;
 
 typedef struct cgltf_material
 {
 	char* name;
 	cgltf_bool has_pbr_metallic_roughness;
 	cgltf_bool has_pbr_specular_glossiness;
 	cgltf_pbr_metallic_roughness pbr_metallic_roughness;
 	cgltf_pbr_specular_glossiness pbr_specular_glossiness;
 	cgltf_texture_view normal_texture;
 	cgltf_texture_view occlusion_texture;
 	cgltf_texture_view emissive_texture;
 	cgltf_float emissive_factor[3];
 	cgltf_alpha_mode alpha_mode;
 	cgltf_float alpha_cutoff;
 	cgltf_bool double_sided;
 	cgltf_bool unlit;
 } cgltf_material;
 
 typedef struct cgltf_morph_target {
 	cgltf_attribute* attributes;
 	cgltf_size attributes_count;
 } cgltf_morph_target;
 
 typedef struct cgltf_primitive {
 	cgltf_primitive_type type;
 	cgltf_accessor* indices;
 	cgltf_material* material;
 	cgltf_attribute* attributes;
 	cgltf_size attributes_count;
 	cgltf_morph_target* targets;
 	cgltf_size targets_count;
 } cgltf_primitive;
 
 typedef struct cgltf_mesh {
 	char* name;
 	cgltf_primitive* primitives;
 	cgltf_size primitives_count;
 	cgltf_float* weights;
 	cgltf_size weights_count;
 } cgltf_mesh;
 
 typedef struct cgltf_node cgltf_node;
 
 typedef struct cgltf_skin {
 	char* name;
 	cgltf_node** joints;
 	cgltf_size joints_count;
 	cgltf_node* skeleton;
 	cgltf_accessor* inverse_bind_matrices;
 } cgltf_skin;
 
 typedef struct cgltf_camera_perspective {
 	cgltf_float aspect_ratio;
 	cgltf_float yfov;
 	cgltf_float zfar;
 	cgltf_float znear;
 } cgltf_camera_perspective;
 
 typedef struct cgltf_camera_orthographic {
 	cgltf_float xmag;
 	cgltf_float ymag;
 	cgltf_float zfar;
 	cgltf_float znear;
 } cgltf_camera_orthographic;
 
 typedef struct cgltf_camera {
 	char* name;
 	cgltf_camera_type type;
 	union {
 		cgltf_camera_perspective perspective;
 		cgltf_camera_orthographic orthographic;
 	};
 } cgltf_camera;
 
 typedef struct cgltf_light {
 	char* name;
 	cgltf_float color[3];
 	cgltf_float intensity;
 	cgltf_light_type type;
 	cgltf_float range;
 	cgltf_float spot_inner_cone_angle;
 	cgltf_float spot_outer_cone_angle;
 } cgltf_light;
 
 typedef struct cgltf_node {
 	char* name;
 	cgltf_node* parent;
 	cgltf_node** children;
 	cgltf_size children_count;
 	cgltf_skin* skin;
 	cgltf_mesh* mesh;
 	cgltf_camera* camera;
 	cgltf_light* light;
 	cgltf_float* weights;
 	cgltf_size weights_count;
 	cgltf_bool has_translation;
 	cgltf_bool has_rotation;
 	cgltf_bool has_scale;
 	cgltf_bool has_matrix;
 	cgltf_float translation[3];
 	cgltf_float rotation[4];
 	cgltf_float scale[3];
 	cgltf_float matrix[16];
 } cgltf_node;
 
 typedef struct cgltf_scene {
 	char* name;
 	cgltf_node** nodes;
 	cgltf_size nodes_count;
 } cgltf_scene;
 
 typedef struct cgltf_animation_sampler {
 	cgltf_accessor* input;
 	cgltf_accessor* output;
 	cgltf_interpolation_type interpolation;
 } cgltf_animation_sampler;
 
 typedef struct cgltf_animation_channel {
 	cgltf_animation_sampler* sampler;
 	cgltf_node* target_node;
 	cgltf_animation_path_type target_path;
 } cgltf_animation_channel;
 
 typedef struct cgltf_animation {
 	char* name;
 	cgltf_animation_sampler* samplers;
 	cgltf_size samplers_count;
 	cgltf_animation_channel* channels;
 	cgltf_size channels_count;
 } cgltf_animation;
 
 typedef struct cgltf_asset {
 	char* copyright;
 	char* generator;
 	char* version;
 	char* min_version;
 } cgltf_asset;
 
 typedef struct cgltf_data
 {
 	cgltf_file_type file_type;
 	void* file_data;
 
 	cgltf_asset asset;
 
 	cgltf_mesh* meshes;
 	cgltf_size meshes_count;
 
 	cgltf_material* materials;
 	cgltf_size materials_count;
 
 	cgltf_accessor* accessors;
 	cgltf_size accessors_count;
 
 	cgltf_buffer_view* buffer_views;
 	cgltf_size buffer_views_count;
 
 	cgltf_buffer* buffers;
 	cgltf_size buffers_count;
 
 	cgltf_image* images;
 	cgltf_size images_count;
 
 	cgltf_texture* textures;
 	cgltf_size textures_count;
 
 	cgltf_sampler* samplers;
 	cgltf_size samplers_count;
 
 	cgltf_skin* skins;
 	cgltf_size skins_count;
 
 	cgltf_camera* cameras;
 	cgltf_size cameras_count;
 
 	cgltf_light* lights;
 	cgltf_size lights_count;
 
 	cgltf_node* nodes;
 	cgltf_size nodes_count;
 
 	cgltf_scene* scenes;
 	cgltf_size scenes_count;
 
 	cgltf_scene* scene;
 
 	cgltf_animation* animations;
 	cgltf_size animations_count;
 
 	const void* bin;
 	cgltf_size bin_size;
 
 	void (*memory_free) (void* user, void* ptr);
 	void* memory_user_data;
 } cgltf_data;
 
 cgltf_result cgltf_parse(
 		const cgltf_options* options,
 		const void* data,
 		cgltf_size size,
 		cgltf_data** out_data);
 
 cgltf_result cgltf_parse_file(
 		const cgltf_options* options,
 		const char* path,
 		cgltf_data** out_data);
 
 cgltf_result cgltf_load_buffers(
 		const cgltf_options* options,
 		cgltf_data* data,
 		const char* gltf_path);
 
 
 cgltf_result cgltf_load_buffer_base64(const cgltf_options* options, cgltf_size size, const char* base64, void** out_data);
 
 cgltf_result cgltf_validate(
 		cgltf_data* data);
 
 void cgltf_free(cgltf_data* data);
 
 void cgltf_node_transform_local(const cgltf_node* node, cgltf_float* out_matrix);
 void cgltf_node_transform_world(const cgltf_node* node, cgltf_float* out_matrix);
 
 cgltf_bool cgltf_accessor_read_float(const cgltf_accessor* accessor, cgltf_size index, cgltf_float* out, cgltf_size element_size);
 cgltf_size cgltf_accessor_read_index(const cgltf_accessor* accessor, cgltf_size index);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* #ifndef CGLTF_H_INCLUDED__ */
 
 /*
  *
  * Stop now, if you are only interested in the API.
  * Below, you find the implementation.
  *
  */
 
 #ifdef __INTELLISENSE__
 /* This makes MSVC intellisense work. */
 #define CGLTF_IMPLEMENTATION
 #endif
 
 #ifdef CGLTF_IMPLEMENTATION
 
 #include <stdint.h> /* For uint8_t, uint32_t */
 #include <string.h> /* For strncpy */
 #include <stdlib.h> /* For malloc, free */
 #include <stdio.h>  /* For fopen */
 #include <limits.h> /* For UINT_MAX etc */
 
 /*
  * -- jsmn.h start --
  * Source: https://github.com/zserge/jsmn
  * License: MIT
  */
 typedef enum {
 	JSMN_UNDEFINED = 0,
 	JSMN_OBJECT = 1,
 	JSMN_ARRAY = 2,
 	JSMN_STRING = 3,
 	JSMN_PRIMITIVE = 4
 } jsmntype_t;
 enum jsmnerr {
 	/* Not enough tokens were provided */
 	JSMN_ERROR_NOMEM = -1,
 	/* Invalid character inside JSON string */
 	JSMN_ERROR_INVAL = -2,
 	/* The string is not a full JSON packet, more bytes expected */
 	JSMN_ERROR_PART = -3
 };
 typedef struct {
 	jsmntype_t type;
 	int start;
 	int end;
 	int size;
 #ifdef JSMN_PARENT_LINKS
 	int parent;
 #endif
 } jsmntok_t;
 typedef struct {
 	unsigned int pos; /* offset in the JSON string */
 	unsigned int toknext; /* next token to allocate */
 	int toksuper; /* superior token node, e.g parent object or array */
 } jsmn_parser;
 static void jsmn_init(jsmn_parser *parser);
 static int jsmn_parse(jsmn_parser *parser, const char *js, size_t len, jsmntok_t *tokens, size_t num_tokens);
 /*
  * -- jsmn.h end --
  */
 
 
 static const cgltf_size GlbHeaderSize = 12;
 static const cgltf_size GlbChunkHeaderSize = 8;
 static const uint32_t GlbVersion = 2;
 static const uint32_t GlbMagic = 0x46546C67;
 static const uint32_t GlbMagicJsonChunk = 0x4E4F534A;
 static const uint32_t GlbMagicBinChunk = 0x004E4942;
 
 static void* cgltf_default_alloc(void* user, cgltf_size size)
 {
 	(void)user;
 	return malloc(size);
 }
 
 static void cgltf_default_free(void* user, void* ptr)
 {
 	(void)user;
 	free(ptr);
 }
 
 static void* cgltf_calloc(cgltf_options* options, size_t element_size, cgltf_size count)
 {
 	if (SIZE_MAX / element_size < count)
 	{
 		return NULL;
 	}
 	void* result = options->memory_alloc(options->memory_user_data, element_size * count);
 	if (!result)
 	{
 		return NULL;
 	}
 	memset(result, 0, element_size * count);
 	return result;
 }
 
 static cgltf_result cgltf_parse_json(cgltf_options* options, const uint8_t* json_chunk, cgltf_size size, cgltf_data** out_data);
 
 cgltf_result cgltf_parse(const cgltf_options* options, const void* data, cgltf_size size, cgltf_data** out_data)
 {
 	if (size < GlbHeaderSize)
 	{
 		return cgltf_result_data_too_short;
 	}
 
 	if (options == NULL)
 	{
 		return cgltf_result_invalid_options;
 	}
 
 	cgltf_options fixed_options = *options;
 	if (fixed_options.memory_alloc == NULL)
 	{
 		fixed_options.memory_alloc = &cgltf_default_alloc;
 	}
 	if (fixed_options.memory_free == NULL)
 	{
 		fixed_options.memory_free = &cgltf_default_free;
 	}
 
 	uint32_t tmp;
 	// Magic
 	memcpy(&tmp, data, 4);
 	if (tmp != GlbMagic)
 	{
 		if (fixed_options.type == cgltf_file_type_invalid)
 		{
 			fixed_options.type = cgltf_file_type_gltf;
 		}
 		else if (fixed_options.type == cgltf_file_type_glb)
 		{
 			return cgltf_result_unknown_format;
 		}
 	}
 
 	if (fixed_options.type == cgltf_file_type_gltf)
 	{
 		cgltf_result json_result = cgltf_parse_json(&fixed_options, (const uint8_t*)data, size, out_data);
 		if (json_result != cgltf_result_success)
 		{
 			return json_result;
 		}
 
 		(*out_data)->file_type = cgltf_file_type_gltf;
 
 		return cgltf_result_success;
 	}
 
 	const uint8_t* ptr = (const uint8_t*)data;
 	// Version
 	memcpy(&tmp, ptr + 4, 4);
 	uint32_t version = tmp;
 	if (version != GlbVersion)
 	{
 		return cgltf_result_unknown_format;
 	}
 
 	// Total length
 	memcpy(&tmp, ptr + 8, 4);
 	if (tmp > size)
 	{
 		return cgltf_result_data_too_short;
 	}
 
 	const uint8_t* json_chunk = ptr + GlbHeaderSize;
 
 	if (GlbHeaderSize + GlbChunkHeaderSize > size)
 	{
 		return cgltf_result_data_too_short;
 	}
 
 	// JSON chunk: length
 	uint32_t json_length;
 	memcpy(&json_length, json_chunk, 4);
 	if (GlbHeaderSize + GlbChunkHeaderSize + json_length > size)
 	{
 		return cgltf_result_data_too_short;
 	}
 
 	// JSON chunk: magic
 	memcpy(&tmp, json_chunk + 4, 4);
 	if (tmp != GlbMagicJsonChunk)
 	{
 		return cgltf_result_unknown_format;
 	}
 
 	json_chunk += GlbChunkHeaderSize;
 
 	const void* bin = 0;
 	cgltf_size bin_size = 0;
 
 	if (GlbHeaderSize + GlbChunkHeaderSize + json_length + GlbChunkHeaderSize <= size)
 	{
 		// We can read another chunk
 		const uint8_t* bin_chunk = json_chunk + json_length;
 
 		// Bin chunk: length
 		uint32_t bin_length;
 		memcpy(&bin_length, bin_chunk, 4);
 		if (GlbHeaderSize + GlbChunkHeaderSize + json_length + GlbChunkHeaderSize + bin_length > size)
 		{
 			return cgltf_result_data_too_short;
 		}
 
 		// Bin chunk: magic
 		memcpy(&tmp, bin_chunk + 4, 4);
 		if (tmp != GlbMagicBinChunk)
 		{
 			return cgltf_result_unknown_format;
 		}
 
 		bin_chunk += GlbChunkHeaderSize;
 
 		bin = bin_chunk;
 		bin_size = bin_length;
 	}
 
 	cgltf_result json_result = cgltf_parse_json(&fixed_options, json_chunk, json_length, out_data);
 	if (json_result != cgltf_result_success)
 	{
 		return json_result;
 	}
 
 	(*out_data)->file_type = cgltf_file_type_glb;
 	(*out_data)->bin = bin;
 	(*out_data)->bin_size = bin_size;
 
 	return cgltf_result_success;
 }
 
 cgltf_result cgltf_parse_file(const cgltf_options* options, const char* path, cgltf_data** out_data)
 {
 	if (options == NULL)
 	{
 		return cgltf_result_invalid_options;
 	}
 
 	void* (*memory_alloc)(void*, cgltf_size) = options->memory_alloc ? options->memory_alloc : &cgltf_default_alloc;
 	void (*memory_free)(void*, void*) = options->memory_free ? options->memory_free : &cgltf_default_free;
 
 	FILE* file = fopen(path, "rb");
 	if (!file)
 	{
 		return cgltf_result_file_not_found;
 	}
 
 	fseek(file, 0, SEEK_END);
 
 	long length = ftell(file);
 	if (length < 0)
 	{
 		fclose(file);
 		return cgltf_result_io_error;
 	}
 
 	fseek(file, 0, SEEK_SET);
 
 	char* file_data = (char*)memory_alloc(options->memory_user_data, length);
 	if (!file_data)
 	{
 		fclose(file);
 		return cgltf_result_out_of_memory;
 	}
 
 	cgltf_size file_size = (cgltf_size)length;
 	cgltf_size read_size = fread(file_data, 1, file_size, file);
 
 	fclose(file);
 
 	if (read_size != file_size)
 	{
 		memory_free(options->memory_user_data, file_data);
 		return cgltf_result_io_error;
 	}
 
 	cgltf_result result = cgltf_parse(options, file_data, file_size, out_data);
 
 	if (result != cgltf_result_success)
 	{
 		memory_free(options->memory_user_data, file_data);
 		return result;
 	}
 
 	(*out_data)->file_data = file_data;
 
 	return cgltf_result_success;
 }
 
 static void cgltf_combine_paths(char* path, const char* base, const char* uri)
 {
 	const char* s0 = strrchr(base, '/');
 	const char* s1 = strrchr(base, '\\');
 	const char* slash = s0 ? (s1 && s1 > s0 ? s1 : s0) : s1;
 
 	if (slash)
 	{
 		size_t prefix = slash - base + 1;
 
 		strncpy(path, base, prefix);
 		strcpy(path + prefix, uri);
 	}
 	else
 	{
 		strcpy(path, base);
 	}
 }
 
 static cgltf_result cgltf_load_buffer_file(const cgltf_options* options, cgltf_size size, const char* uri, const char* gltf_path, void** out_data)
 {
 	void* (*memory_alloc)(void*, cgltf_size) = options->memory_alloc ? options->memory_alloc : &cgltf_default_alloc;
 	void (*memory_free)(void*, void*) = options->memory_free ? options->memory_free : &cgltf_default_free;
 
 	char* path = (char*)memory_alloc(options->memory_user_data, strlen(uri) + strlen(gltf_path) + 1);
 	if (!path)
 	{
 		return cgltf_result_out_of_memory;
 	}
 
 	cgltf_combine_paths(path, gltf_path, uri);
 
 	FILE* file = fopen(path, "rb");
 
 	memory_free(options->memory_user_data, path);
 
 	if (!file)
 	{
 		return cgltf_result_file_not_found;
 	}
 
 	char* file_data = (char*)memory_alloc(options->memory_user_data, size);
 	if (!file_data)
 	{
 		fclose(file);
 		return cgltf_result_out_of_memory;
 	}
 
 	cgltf_size read_size = fread(file_data, 1, size, file);
 
 	fclose(file);
 
 	if (read_size != size)
 	{
 		memory_free(options->memory_user_data, file_data);
 		return cgltf_result_io_error;
 	}
 
 	*out_data = file_data;
 
 	return cgltf_result_success;
 }
 
 cgltf_result cgltf_load_buffer_base64(const cgltf_options* options, cgltf_size size, const char* base64, void** out_data)
 {
 	void* (*memory_alloc)(void*, cgltf_size) = options->memory_alloc ? options->memory_alloc : &cgltf_default_alloc;
 	void (*memory_free)(void*, void*) = options->memory_free ? options->memory_free : &cgltf_default_free;
 
 	unsigned char* data = (unsigned char*)memory_alloc(options->memory_user_data, size);
 	if (!data)
 	{
 		return cgltf_result_out_of_memory;
 	}
 
 	unsigned int buffer = 0;
 	unsigned int buffer_bits = 0;
 
 	for (cgltf_size i = 0; i < size; ++i)
 	{
 		while (buffer_bits < 8)
 		{
 			char ch = *base64++;
 
 			int index =
 				(unsigned)(ch - 'A') < 26 ? (ch - 'A') :
 				(unsigned)(ch - 'a') < 26 ? (ch - 'a') + 26 :
 				(unsigned)(ch - '0') < 10 ? (ch - '0') + 52 :
 				ch == '+' ? 62 :
 				ch == '/' ? 63 :
 				-1;
 
 			if (index < 0)
 			{
 				memory_free(options->memory_user_data, data);
 				return cgltf_result_io_error;
 			}
 
 			buffer = (buffer << 6) | index;
 			buffer_bits += 6;
 		}
 
 		data[i] = (unsigned char)(buffer >> (buffer_bits - 8));
 		buffer_bits -= 8;
 	}
 
 	*out_data = data;
 
 	return cgltf_result_success;
 }
 
 cgltf_result cgltf_load_buffers(const cgltf_options* options, cgltf_data* data, const char* gltf_path)
 {
 	if (options == NULL)
 	{
 		return cgltf_result_invalid_options;
 	}
 
 	if (data->buffers_count && data->buffers[0].data == NULL && data->buffers[0].uri == NULL && data->bin)
 	{
 		if (data->bin_size < data->buffers[0].size)
 		{
 			return cgltf_result_data_too_short;
 		}
 
 		data->buffers[0].data = (void*)data->bin;
 	}
 
 	for (cgltf_size i = 0; i < data->buffers_count; ++i)
 	{
 		if (data->buffers[i].data)
 		{
 			continue;
 		}
 
 		const char* uri = data->buffers[i].uri;
 
 		if (uri == NULL)
 		{
 			continue;
 		}
 
 		if (strncmp(uri, "data:", 5) == 0)
 		{
 			const char* comma = strchr(uri, ',');
 
 			if (comma && comma - uri >= 7 && strncmp(comma - 7, ";base64", 7) == 0)
 			{
 				cgltf_result res = cgltf_load_buffer_base64(options, data->buffers[i].size, comma + 1, &data->buffers[i].data);
 
 				if (res != cgltf_result_success)
 				{
 					return res;
 				}
 			}
 			else
 			{
 				return cgltf_result_unknown_format;
 			}
 		}
 		else if (strstr(uri, "://") == NULL)
 		{
 			cgltf_result res = cgltf_load_buffer_file(options, data->buffers[i].size, uri, gltf_path, &data->buffers[i].data);
 
 			if (res != cgltf_result_success)
 			{
 				return res;
 			}
 		}
 		else
 		{
 			return cgltf_result_unknown_format;
 		}
 	}
 
 	return cgltf_result_success;
 }
 
 static cgltf_size cgltf_calc_size(cgltf_type type, cgltf_component_type component_type);
 
 static cgltf_size cgltf_calc_index_bound(cgltf_buffer_view* buffer_view, cgltf_size offset, cgltf_component_type component_type, cgltf_size count)
 {
 	char* data = (char*)buffer_view->buffer->data + offset + buffer_view->offset;
 	cgltf_size bound = 0;
 
 	switch (component_type)
 	{
 	case cgltf_component_type_r_8u:
 		for (size_t i = 0; i < count; ++i)
 		{
 			cgltf_size v = ((unsigned char*)data)[i];
 			bound = bound > v ? bound : v;
 		}
 		break;
 
 	case cgltf_component_type_r_16u:
 		for (size_t i = 0; i < count; ++i)
 		{
 			cgltf_size v = ((unsigned short*)data)[i];
 			bound = bound > v ? bound : v;
 		}
 		break;
 
 	case cgltf_component_type_r_32u:
 		for (size_t i = 0; i < count; ++i)
 		{
 			cgltf_size v = ((unsigned int*)data)[i];
 			bound = bound > v ? bound : v;
 		}
 		break;
 
 	default:
 		;
 	}
 
 	return bound;
 }
 
 cgltf_result cgltf_validate(cgltf_data* data)
 {
 	for (cgltf_size i = 0; i < data->accessors_count; ++i)
 	{
 		cgltf_accessor* accessor = &data->accessors[i];
 
 		cgltf_size element_size = cgltf_calc_size(accessor->type, accessor->component_type);
 
 		if (accessor->buffer_view)
 		{
 			cgltf_size req_size = accessor->offset + accessor->stride * (accessor->count - 1) + element_size;
 
 			if (accessor->buffer_view->size < req_size)
 			{
 				return cgltf_result_data_too_short;
 			}
 		}
 
 		if (accessor->is_sparse)
 		{
 			cgltf_accessor_sparse* sparse = &accessor->sparse;
 
 			cgltf_size indices_component_size = cgltf_calc_size(cgltf_type_scalar, sparse->indices_component_type);
 			cgltf_size indices_req_size = sparse->indices_byte_offset + indices_component_size * sparse->count;
 			cgltf_size values_req_size = sparse->values_byte_offset + element_size * sparse->count;
 
 			if (sparse->indices_buffer_view->size < indices_req_size ||
 				sparse->values_buffer_view->size < values_req_size)
 			{
 				return cgltf_result_data_too_short;
 			}
 
 			if (sparse->indices_component_type != cgltf_component_type_r_8u &&
 				sparse->indices_component_type != cgltf_component_type_r_16u &&
 				sparse->indices_component_type != cgltf_component_type_r_32u)
 			{
 				return cgltf_result_invalid_gltf;
 			}
 
 			if (sparse->indices_buffer_view->buffer->data)
 			{
 				cgltf_size index_bound = cgltf_calc_index_bound(sparse->indices_buffer_view, sparse->indices_byte_offset, sparse->indices_component_type, sparse->count);
 
 				if (index_bound >= accessor->count)
 				{
 					return cgltf_result_data_too_short;
 				}
 			}
 		}
 	}
 
 	for (cgltf_size i = 0; i < data->buffer_views_count; ++i)
 	{
 		cgltf_size req_size = data->buffer_views[i].offset + data->buffer_views[i].size;
 
 		if (data->buffer_views[i].buffer && data->buffer_views[i].buffer->size < req_size)
 		{
 			return cgltf_result_data_too_short;
 		}
 	}
 
 	for (cgltf_size i = 0; i < data->meshes_count; ++i)
 	{
 		if (data->meshes[i].weights)
 		{
 			if (data->meshes[i].primitives_count && data->meshes[i].primitives[0].targets_count != data->meshes[i].weights_count)
 			{
 				return cgltf_result_invalid_gltf;
 			}
 		}
 
 		for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
 		{
 			if (data->meshes[i].primitives[j].targets_count != data->meshes[i].primitives[0].targets_count)
 			{
 				return cgltf_result_invalid_gltf;
 			}
 
 			if (data->meshes[i].primitives[j].attributes_count)
 			{
 				cgltf_accessor* first = data->meshes[i].primitives[j].attributes[0].data;
 
 				for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
 				{
 					if (data->meshes[i].primitives[j].attributes[k].data->count != first->count)
 					{
 						return cgltf_result_invalid_gltf;
 					}
 				}
 
 				for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
 				{
 					for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
 					{
 						if (data->meshes[i].primitives[j].targets[k].attributes[m].data->count != first->count)
 						{
 							return cgltf_result_invalid_gltf;
 						}
 					}
 				}
 
 				cgltf_accessor* indices = data->meshes[i].primitives[j].indices;
 
 				if (indices &&
 					indices->component_type != cgltf_component_type_r_8u &&
 					indices->component_type != cgltf_component_type_r_16u &&
 					indices->component_type != cgltf_component_type_r_32u)
 				{
 					return cgltf_result_invalid_gltf;
 				}
 
 				if (indices && indices->buffer_view && indices->buffer_view->buffer->data)
 				{
 					cgltf_size index_bound = cgltf_calc_index_bound(indices->buffer_view, indices->offset, indices->component_type, indices->count);
 
 					if (index_bound >= first->count)
 					{
 						return cgltf_result_data_too_short;
 					}
 				}
 			}
 		}
 	}
 
 	for (cgltf_size i = 0; i < data->nodes_count; ++i)
 	{
 		if (data->nodes[i].weights && data->nodes[i].mesh)
 		{
 			if (data->nodes[i].mesh->primitives_count && data->nodes[i].mesh->primitives[0].targets_count != data->nodes[i].weights_count)
 			{
 				return cgltf_result_invalid_gltf;
 			}
 		}
 	}
 
 	return cgltf_result_success;
 }
 
 void cgltf_free(cgltf_data* data)
 {
 	if (!data)
 	{
 		return;
 	}
 
 	data->memory_free(data->memory_user_data, data->asset.copyright);
 	data->memory_free(data->memory_user_data, data->asset.generator);
 	data->memory_free(data->memory_user_data, data->asset.version);
 	data->memory_free(data->memory_user_data, data->asset.min_version);
 
 	data->memory_free(data->memory_user_data, data->accessors);
 	data->memory_free(data->memory_user_data, data->buffer_views);
 
 	for (cgltf_size i = 0; i < data->buffers_count; ++i)
 	{
 		if (data->buffers[i].data != data->bin)
 		{
 			data->memory_free(data->memory_user_data, data->buffers[i].data);
 		}
 
 		data->memory_free(data->memory_user_data, data->buffers[i].uri);
 	}
 
 	data->memory_free(data->memory_user_data, data->buffers);
 
 	for (cgltf_size i = 0; i < data->meshes_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->meshes[i].name);
 
 		for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
 		{
 			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
 			{
 				data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].attributes[k].name);
 			}
 
 			data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].attributes);
 
 			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
 			{
 				for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
 				{
 					data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].targets[k].attributes[m].name);
 				}
 
 				data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].targets[k].attributes);
 			}
 
 			data->memory_free(data->memory_user_data, data->meshes[i].primitives[j].targets);
 		}
 
 		data->memory_free(data->memory_user_data, data->meshes[i].primitives);
 		data->memory_free(data->memory_user_data, data->meshes[i].weights);
 	}
 
 	data->memory_free(data->memory_user_data, data->meshes);
 
 	for (cgltf_size i = 0; i < data->materials_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->materials[i].name);
 	}
 
 	data->memory_free(data->memory_user_data, data->materials);
 
 	for (cgltf_size i = 0; i < data->images_count; ++i) 
 	{
 		data->memory_free(data->memory_user_data, data->images[i].name);
 		data->memory_free(data->memory_user_data, data->images[i].uri);
 		data->memory_free(data->memory_user_data, data->images[i].mime_type);
 	}
 
 	data->memory_free(data->memory_user_data, data->images);
 
 	for (cgltf_size i = 0; i < data->textures_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->textures[i].name);
 	}
 
 	data->memory_free(data->memory_user_data, data->textures);
 
 	data->memory_free(data->memory_user_data, data->samplers);
 
 	for (cgltf_size i = 0; i < data->skins_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->skins[i].name);
 		data->memory_free(data->memory_user_data, data->skins[i].joints);
 	}
 
 	data->memory_free(data->memory_user_data, data->skins);
 
 	for (cgltf_size i = 0; i < data->cameras_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->cameras[i].name);
 	}
 
 	data->memory_free(data->memory_user_data, data->cameras);
 
 	for (cgltf_size i = 0; i < data->lights_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->lights[i].name);
 	}
 
 	data->memory_free(data->memory_user_data, data->lights);
 
 	for (cgltf_size i = 0; i < data->nodes_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->nodes[i].name);
 		data->memory_free(data->memory_user_data, data->nodes[i].children);
 		data->memory_free(data->memory_user_data, data->nodes[i].weights);
 	}
 
 	data->memory_free(data->memory_user_data, data->nodes);
 
 	for (cgltf_size i = 0; i < data->scenes_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->scenes[i].name);
 		data->memory_free(data->memory_user_data, data->scenes[i].nodes);
 	}
 
 	data->memory_free(data->memory_user_data, data->scenes);
 
 	for (cgltf_size i = 0; i < data->animations_count; ++i)
 	{
 		data->memory_free(data->memory_user_data, data->animations[i].name);
 		data->memory_free(data->memory_user_data, data->animations[i].samplers);
 		data->memory_free(data->memory_user_data, data->animations[i].channels);
 	}
 
 	data->memory_free(data->memory_user_data, data->animations);
 
 	data->memory_free(data->memory_user_data, data->file_data);
 
 	data->memory_free(data->memory_user_data, data);
 }
 
 void cgltf_node_transform_local(const cgltf_node* node, cgltf_float* out_matrix)
 {
 	cgltf_float* lm = out_matrix;
 
 	if (node->has_matrix)
 	{
 		memcpy(lm, node->matrix, sizeof(float) * 16);
 	}
 	else
 	{
 		float tx = node->translation[0];
 		float ty = node->translation[1];
 		float tz = node->translation[2];
 
 		float qx = node->rotation[0];
 		float qy = node->rotation[1];
 		float qz = node->rotation[2];
 		float qw = node->rotation[3];
 
 		float sx = node->scale[0];
 		float sy = node->scale[1];
 		float sz = node->scale[2];
 
 		lm[0] = (1 - 2 * qy*qy - 2 * qz*qz) * sx;
 		lm[1] = (2 * qx*qy + 2 * qz*qw) * sy;
 		lm[2] = (2 * qx*qz - 2 * qy*qw) * sz;
 		lm[3] = 0.f;
 
 		lm[4] = (2 * qx*qy - 2 * qz*qw) * sx;
 		lm[5] = (1 - 2 * qx*qx - 2 * qz*qz) * sy;
 		lm[6] = (2 * qy*qz + 2 * qx*qw) * sz;
 		lm[7] = 0.f;
 
 		lm[8] = (2 * qx*qz + 2 * qy*qw) * sx;
 		lm[9] = (2 * qy*qz - 2 * qx*qw) * sy;
 		lm[10] = (1 - 2 * qx*qx - 2 * qy*qy) * sz;
 		lm[11] = 0.f;
 
 		lm[12] = tx;
 		lm[13] = ty;
 		lm[14] = tz;
 		lm[15] = 1.f;
 	}
 }
 
 void cgltf_node_transform_world(const cgltf_node* node, cgltf_float* out_matrix)
 {
 	cgltf_float* lm = out_matrix;
 	cgltf_node_transform_local(node, lm);
 
 	const cgltf_node* parent = node->parent;
 
 	while (parent)
 	{
 		float pm[16];
 		cgltf_node_transform_local(parent, pm);
 
 		for (int i = 0; i < 4; ++i)
 		{
 			float l0 = lm[i * 4 + 0];
 			float l1 = lm[i * 4 + 1];
 			float l2 = lm[i * 4 + 2];
 
 			float r0 = l0 * pm[0] + l1 * pm[4] + l2 * pm[8];
 			float r1 = l0 * pm[1] + l1 * pm[5] + l2 * pm[9];
 			float r2 = l0 * pm[2] + l1 * pm[6] + l2 * pm[10];
 
 			lm[i * 4 + 0] = r0;
 			lm[i * 4 + 1] = r1;
 			lm[i * 4 + 2] = r2;
 		}
 
 		lm[12] += pm[12];
 		lm[13] += pm[13];
 		lm[14] += pm[14];
 
 		parent = parent->parent;
 	}
 }
 
 static cgltf_size cgltf_component_read_index(const void* in, cgltf_component_type component_type)
 {
 	switch (component_type)
 	{
 		case cgltf_component_type_r_16:
 			return *((const int16_t*) in);
 		case cgltf_component_type_r_16u:
 			return *((const uint16_t*) in);
 		case cgltf_component_type_r_32u:
 			return *((const uint32_t*) in);
 		case cgltf_component_type_r_32f:
 			return *((const float*) in);
 		case cgltf_component_type_r_8:
 			return *((const int8_t*) in);
 		case cgltf_component_type_r_8u:
 		case cgltf_component_type_invalid:
 		default:
 			return *((const uint8_t*) in);
 	}
 }
 
 static cgltf_float cgltf_component_read_float(const void* in, cgltf_component_type component_type, cgltf_bool normalized)
 {
 	if (component_type == cgltf_component_type_r_32f)
 	{
 		return *((const float*) in);
 	}
 
 	if (normalized)
 	{
 		switch (component_type)
 		{
 			case cgltf_component_type_r_32u:
 				return *((const uint32_t*) in) / (float) UINT_MAX;
 			case cgltf_component_type_r_16:
 				return *((const int16_t*) in) / (float) SHRT_MAX;
 			case cgltf_component_type_r_16u:
 				return *((const uint16_t*) in) / (float) USHRT_MAX;
 			case cgltf_component_type_r_8:
 				return *((const int8_t*) in) / (float) SCHAR_MAX;
 			case cgltf_component_type_r_8u:
 			case cgltf_component_type_invalid:
 			default:
 				return *((const uint8_t*) in) / (float) CHAR_MAX;
 		}
 	}
 
 	return cgltf_component_read_index(in, component_type);
 }
 
 static cgltf_size cgltf_num_components(cgltf_type type);
 static cgltf_size cgltf_component_size(cgltf_component_type component_type);
 
 static cgltf_bool cgltf_element_read_float(const uint8_t* element, cgltf_type type, cgltf_component_type component_type, cgltf_bool normalized, cgltf_float* out, cgltf_size element_size)
 {
 	cgltf_size num_components = cgltf_num_components(type);
 
 	if (element_size < num_components) {
 		return 0;
 	}
 
 	// There are three special cases for component extraction, see #data-alignment in the 2.0 spec.
 
 	cgltf_size component_size = cgltf_component_size(component_type);
 
 	if (type == cgltf_type_mat2 && component_size == 1)
 	{
 		out[0] = cgltf_component_read_float(element, component_type, normalized);
 		out[1] = cgltf_component_read_float(element + 1, component_type, normalized);
 		out[2] = cgltf_component_read_float(element + 4, component_type, normalized);
 		out[3] = cgltf_component_read_float(element + 5, component_type, normalized);
 		return 1;
 	}
 
 	if (type == cgltf_type_mat3 && component_size == 1)
 	{
 		out[0] = cgltf_component_read_float(element, component_type, normalized);
 		out[1] = cgltf_component_read_float(element + 1, component_type, normalized);
 		out[2] = cgltf_component_read_float(element + 2, component_type, normalized);
 		out[3] = cgltf_component_read_float(element + 4, component_type, normalized);
 		out[4] = cgltf_component_read_float(element + 5, component_type, normalized);
 		out[5] = cgltf_component_read_float(element + 6, component_type, normalized);
 		out[6] = cgltf_component_read_float(element + 8, component_type, normalized);
 		out[7] = cgltf_component_read_float(element + 9, component_type, normalized);
 		out[8] = cgltf_component_read_float(element + 10, component_type, normalized);
 		return 1;
 	}
 
 	if (type == cgltf_type_mat3 && component_size == 2)
 	{
 		out[0] = cgltf_component_read_float(element, component_type, normalized);
 		out[1] = cgltf_component_read_float(element + 2, component_type, normalized);
 		out[2] = cgltf_component_read_float(element + 4, component_type, normalized);
 		out[3] = cgltf_component_read_float(element + 8, component_type, normalized);
 		out[4] = cgltf_component_read_float(element + 10, component_type, normalized);
 		out[5] = cgltf_component_read_float(element + 12, component_type, normalized);
 		out[6] = cgltf_component_read_float(element + 16, component_type, normalized);
 		out[7] = cgltf_component_read_float(element + 18, component_type, normalized);
 		out[8] = cgltf_component_read_float(element + 20, component_type, normalized);
 		return 1;
 	}
 
 	for (cgltf_size i = 0; i < num_components; ++i)
 	{
 		out[i] = cgltf_component_read_float(element + component_size * i, component_type, normalized);
 	}
 	return 1;
 }
 
 
 cgltf_bool cgltf_accessor_read_float(const cgltf_accessor* accessor, cgltf_size index, cgltf_float* out, cgltf_size element_size)
 {
 	if (accessor->is_sparse || accessor->buffer_view == NULL)
 	{
 		return 0;
 	}
 
 	cgltf_size offset = accessor->offset + accessor->buffer_view->offset;
 	const uint8_t* element = (const uint8_t*) accessor->buffer_view->buffer->data;
 	element += offset + accessor->stride * index;
 	return cgltf_element_read_float(element, accessor->type, accessor->component_type, accessor->normalized, out, element_size);
 }
 
 cgltf_size cgltf_accessor_read_index(const cgltf_accessor* accessor, cgltf_size index)
 {
 	if (accessor->buffer_view)
 	{
 		cgltf_size offset = accessor->offset + accessor->buffer_view->offset;
 		const uint8_t* element = (const uint8_t*) accessor->buffer_view->buffer->data;
 		element += offset + accessor->stride * index;
 		return cgltf_component_read_index(element, accessor->component_type);
 	}
 
 	return 0;
 }
 
 #define CGLTF_ERROR_JSON -1
 #define CGLTF_ERROR_NOMEM -2
 
 #define CGLTF_CHECK_TOKTYPE(tok_, type_) if ((tok_).type != (type_)) { return CGLTF_ERROR_JSON; }
 #define CGLTF_CHECK_KEY(tok_) if ((tok_).type != JSMN_STRING || (tok_).size == 0) { return CGLTF_ERROR_JSON; } /* checking size for 0 verifies that a value follows the key */
 
 #define CGLTF_PTRINDEX(type, idx) (type*)(cgltf_size)(idx + 1)
 #define CGLTF_PTRFIXUP(var, data, size) if (var) { if ((cgltf_size)var > size) { return CGLTF_ERROR_JSON; } var = &data[(cgltf_size)var-1]; }
 #define CGLTF_PTRFIXUP_REQ(var, data, size) if (!var || (cgltf_size)var > size) { return CGLTF_ERROR_JSON; } var = &data[(cgltf_size)var-1];
 
 static int cgltf_json_strcmp(jsmntok_t const* tok, const uint8_t* json_chunk, const char* str)
 {
 	CGLTF_CHECK_TOKTYPE(*tok, JSMN_STRING);
 	size_t const str_len = strlen(str);
 	size_t const name_length = tok->end - tok->start;
 	return (str_len == name_length) ? strncmp((const char*)json_chunk + tok->start, str, str_len) : 128;
 }
 
 static int cgltf_json_to_int(jsmntok_t const* tok, const uint8_t* json_chunk)
 {
 	CGLTF_CHECK_TOKTYPE(*tok, JSMN_PRIMITIVE);
 	char tmp[128];
 	int size = (cgltf_size)(tok->end - tok->start) < sizeof(tmp) ? tok->end - tok->start : sizeof(tmp) - 1;
 	strncpy(tmp, (const char*)json_chunk + tok->start, size);
 	tmp[size] = 0;
 	return atoi(tmp);
 }
 
 static cgltf_float cgltf_json_to_float(jsmntok_t const* tok, const uint8_t* json_chunk)
 {
 	CGLTF_CHECK_TOKTYPE(*tok, JSMN_PRIMITIVE);
 	char tmp[128];
 	int size = (cgltf_size)(tok->end - tok->start) < sizeof(tmp) ? tok->end - tok->start : sizeof(tmp) - 1;
 	strncpy(tmp, (const char*)json_chunk + tok->start, size);
 	tmp[size] = 0;
 	return (cgltf_float)atof(tmp);
 }
 
 static cgltf_bool cgltf_json_to_bool(jsmntok_t const* tok, const uint8_t* json_chunk)
 {
 	int size = tok->end - tok->start;
 	return size == 4 && memcmp(json_chunk + tok->start, "true", 4) == 0;
 }
 
 static int cgltf_skip_json(jsmntok_t const* tokens, int i)
 {
 	if (tokens[i].type == JSMN_ARRAY)
 	{
 		int size = tokens[i].size;
 		++i;
 		for (int j = 0; j < size; ++j)
 		{
 			i = cgltf_skip_json(tokens, i);
 			if (i < 0)
 			{
 				return i;
 			}
 		}
 	}
 	else if (tokens[i].type == JSMN_OBJECT)
 	{
 		int size = tokens[i].size;
 		++i;
 		for (int j = 0; j < size; ++j)
 		{
 			CGLTF_CHECK_KEY(tokens[i]);
 			++i;
 			i = cgltf_skip_json(tokens, i);
 			if (i < 0)
 			{
 				return i;
 			}
 		}
 	}
 	else if (tokens[i].type == JSMN_PRIMITIVE
 		 || tokens[i].type == JSMN_STRING)
 	{
 		return i + 1;
 	}
 	return i;
 }
 
 static void cgltf_fill_float_array(float* out_array, int size, float value)
 {
 	for (int j = 0; j < size; ++j)
 	{
 		out_array[j] = value;
 	}
 }
 
 static int cgltf_parse_json_float_array(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, float* out_array, int size)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_ARRAY);
 	if (tokens[i].size != size)
 	{
 		return CGLTF_ERROR_JSON;
 	}
 	++i;
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
 		out_array[j] = cgltf_json_to_float(tokens + i, json_chunk);
 		++i;
 	}
 	return i;
 }
 
 static int cgltf_parse_json_string(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, char** out_string)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_STRING);
 	if (*out_string)
 	{
 		return CGLTF_ERROR_JSON;
 	}
 	int size = tokens[i].end - tokens[i].start;
 	char* result = (char*)options->memory_alloc(options->memory_user_data, size + 1);
 	if (!result)
 	{
 		return CGLTF_ERROR_NOMEM;
 	}
 	strncpy(result, (const char*)json_chunk + tokens[i].start, size);
 	result[size] = 0;
 	*out_string = result;
 	return i + 1;
 }
 
 static int cgltf_parse_json_array(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, size_t element_size, void** out_array, cgltf_size* out_size)
 {
 	(void)json_chunk;
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_ARRAY);
 	if (*out_array)
 	{
 		return CGLTF_ERROR_JSON;
 	}
 	int size = tokens[i].size;
 	void* result = cgltf_calloc(options, element_size, size);
 	if (!result)
 	{
 		return CGLTF_ERROR_NOMEM;
 	}
 	*out_array = result;
 	*out_size = size;
 	return i + 1;
 }
 
 static void cgltf_parse_attribute_type(const char* name, cgltf_attribute_type* out_type, int* out_index)
 {
 	const char* us = strchr(name, '_');
 	size_t len = us ? us - name : strlen(name);
 
 	if (len == 8 && strncmp(name, "POSITION", 8) == 0)
 	{
 		*out_type = cgltf_attribute_type_position;
 	}
 	else if (len == 6 && strncmp(name, "NORMAL", 6) == 0)
 	{
 		*out_type = cgltf_attribute_type_normal;
 	}
 	else if (len == 7 && strncmp(name, "TANGENT", 7) == 0)
 	{
 		*out_type = cgltf_attribute_type_tangent;
 	}
 	else if (len == 8 && strncmp(name, "TEXCOORD", 8) == 0)
 	{
 		*out_type = cgltf_attribute_type_texcoord;
 	}
 	else if (len == 5 && strncmp(name, "COLOR", 5) == 0)
 	{
 		*out_type = cgltf_attribute_type_color;
 	}
 	else if (len == 6 && strncmp(name, "JOINTS", 6) == 0)
 	{
 		*out_type = cgltf_attribute_type_joints;
 	}
 	else if (len == 7 && strncmp(name, "WEIGHTS", 7) == 0)
 	{
 		*out_type = cgltf_attribute_type_weights;
 	}
 	else
 	{
 		*out_type = cgltf_attribute_type_invalid;
 	}
 
 	if (us && *out_type != cgltf_attribute_type_invalid)
 	{
 		*out_index = atoi(us + 1);
 	}
 }
 
 static int cgltf_parse_json_attribute_list(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_attribute** out_attributes, cgltf_size* out_attributes_count)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	if (*out_attributes)
 	{
 		return CGLTF_ERROR_JSON;
 	}
 
 	*out_attributes_count = tokens[i].size;
 	*out_attributes = (cgltf_attribute*)cgltf_calloc(options, sizeof(cgltf_attribute), *out_attributes_count);
 	++i;
 
 	if (!*out_attributes)
 	{
 		return CGLTF_ERROR_NOMEM;
 	}
 
 	for (cgltf_size j = 0; j < *out_attributes_count; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		i = cgltf_parse_json_string(options, tokens, i, json_chunk, &(*out_attributes)[j].name);
 		if (i < 0)
 		{
 			return CGLTF_ERROR_JSON;
 		}
 
 		cgltf_parse_attribute_type((*out_attributes)[j].name, &(*out_attributes)[j].type, &(*out_attributes)[j].index);
 
 		(*out_attributes)[j].data = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
 		++i;
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_primitive(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_primitive* out_prim)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	out_prim->type = cgltf_primitive_type_triangles;
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "mode") == 0)
 		{
 			++i;
 			out_prim->type
 					= (cgltf_primitive_type)
 					cgltf_json_to_int(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "indices") == 0)
 		{
 			++i;
 			out_prim->indices = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "material") == 0)
 		{
 			++i;
 			out_prim->material = CGLTF_PTRINDEX(cgltf_material, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "attributes") == 0)
 		{
 			i = cgltf_parse_json_attribute_list(options, tokens, i + 1, json_chunk, &out_prim->attributes, &out_prim->attributes_count);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "targets") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_morph_target), (void**)&out_prim->targets, &out_prim->targets_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			for (cgltf_size k = 0; k < out_prim->targets_count; ++k)
 			{
 				i = cgltf_parse_json_attribute_list(options, tokens, i, json_chunk, &out_prim->targets[k].attributes, &out_prim->targets[k].attributes_count);
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_mesh(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_mesh* out_mesh)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_mesh->name);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "primitives") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_primitive), (void**)&out_mesh->primitives, &out_mesh->primitives_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			for (cgltf_size prim_index = 0; prim_index < out_mesh->primitives_count; ++prim_index)
 			{
 				i = cgltf_parse_json_primitive(options, tokens, i, json_chunk, &out_mesh->primitives[prim_index]);
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "weights") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_float), (void**)&out_mesh->weights, &out_mesh->weights_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			i = cgltf_parse_json_float_array(tokens, i - 1, json_chunk, out_mesh->weights, (int)out_mesh->weights_count);
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_meshes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_mesh), (void**)&out_data->meshes, &out_data->meshes_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->meshes_count; ++j)
 	{
 		i = cgltf_parse_json_mesh(options, tokens, i, json_chunk, &out_data->meshes[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static cgltf_component_type cgltf_json_to_component_type(jsmntok_t const* tok, const uint8_t* json_chunk)
 {
 	int type = cgltf_json_to_int(tok, json_chunk);
 
 	switch (type)
 	{
 	case 5120:
 		return cgltf_component_type_r_8;
 	case 5121:
 		return cgltf_component_type_r_8u;
 	case 5122:
 		return cgltf_component_type_r_16;
 	case 5123:
 		return cgltf_component_type_r_16u;
 	case 5125:
 		return cgltf_component_type_r_32u;
 	case 5126:
 		return cgltf_component_type_r_32f;
 	default:
 		return cgltf_component_type_invalid;
 	}
 }
 
 static int cgltf_parse_json_accessor_sparse(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_accessor_sparse* out_sparse)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "count") == 0)
 		{
 			++i;
 			out_sparse->count = cgltf_json_to_int(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "indices") == 0)
 		{
 			++i;
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int indices_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < indices_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
 				{
 					++i;
 					out_sparse->indices_buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
 				{
 					++i;
 					out_sparse->indices_byte_offset = cgltf_json_to_int(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "componentType") == 0)
 				{
 					++i;
 					out_sparse->indices_component_type = cgltf_json_to_component_type(tokens + i, json_chunk);
 					++i;
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "values") == 0)
 		{
 			++i;
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int values_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < values_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
 				{
 					++i;
 					out_sparse->values_buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
 				{
 					++i;
 					out_sparse->values_byte_offset = cgltf_json_to_int(tokens + i, json_chunk);
 					++i;
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_accessor(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_accessor* out_accessor)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
 		{
 			++i;
 			out_accessor->buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
 		{
 			++i;
 			out_accessor->offset =
 					cgltf_json_to_int(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "componentType") == 0)
 		{
 			++i;
 			out_accessor->component_type = cgltf_json_to_component_type(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "normalized") == 0)
 		{
 			++i;
 			out_accessor->normalized = cgltf_json_to_bool(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "count") == 0)
 		{
 			++i;
 			out_accessor->count =
 					cgltf_json_to_int(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
 		{
 			++i;
 			if (cgltf_json_strcmp(tokens+i, json_chunk, "SCALAR") == 0)
 			{
 				out_accessor->type = cgltf_type_scalar;
 			}
 			else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC2") == 0)
 			{
 				out_accessor->type = cgltf_type_vec2;
 			}
 			else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC3") == 0)
 			{
 				out_accessor->type = cgltf_type_vec3;
 			}
 			else if (cgltf_json_strcmp(tokens+i, json_chunk, "VEC4") == 0)
 			{
 				out_accessor->type = cgltf_type_vec4;
 			}
 			else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT2") == 0)
 			{
 				out_accessor->type = cgltf_type_mat2;
 			}
 			else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT3") == 0)
 			{
 				out_accessor->type = cgltf_type_mat3;
 			}
 			else if (cgltf_json_strcmp(tokens+i, json_chunk, "MAT4") == 0)
 			{
 				out_accessor->type = cgltf_type_mat4;
 			}
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "min") == 0)
 		{
 			++i;
 			out_accessor->has_min = 1;
 			// note: we can't parse the precise number of elements since type may not have been computed yet
 			int min_size = tokens[i].size > 16 ? 16 : tokens[i].size;
 			i = cgltf_parse_json_float_array(tokens, i, json_chunk, out_accessor->min, min_size);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "max") == 0)
 		{
 			++i;
 			out_accessor->has_max = 1;
 			// note: we can't parse the precise number of elements since type may not have been computed yet
 			int max_size = tokens[i].size > 16 ? 16 : tokens[i].size;
 			i = cgltf_parse_json_float_array(tokens, i, json_chunk, out_accessor->max, max_size);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "sparse") == 0)
 		{
 			out_accessor->is_sparse = 1;
 			i = cgltf_parse_json_accessor_sparse(tokens, i + 1, json_chunk, &out_accessor->sparse);
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_texture_transform(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture_transform* out_texture_transform)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens + i, json_chunk, "offset") == 0)
 		{
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_texture_transform->offset, 2);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "rotation") == 0)
 		{
 			++i;
 			out_texture_transform->rotation = cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scale") == 0)
 		{
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_texture_transform->scale, 2);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "texCoord") == 0)
 		{
 			++i;
 			out_texture_transform->texcoord = cgltf_json_to_int(tokens + i, json_chunk);
 			++i;
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i + 1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_texture_view(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture_view* out_texture_view)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	out_texture_view->scale = 1.0f;
 	cgltf_fill_float_array(out_texture_view->transform.scale, 2, 1.0f);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens + i, json_chunk, "index") == 0)
 		{
 			++i;
 			out_texture_view->texture = CGLTF_PTRINDEX(cgltf_texture, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "texCoord") == 0)
 		{
 			++i;
 			out_texture_view->texcoord = cgltf_json_to_int(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scale") == 0) 
 		{
 			++i;
 			out_texture_view->scale = cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "strength") == 0)
 		{
 			++i;
 			out_texture_view->scale = cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int extensions_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < extensions_size; ++k)
 			{
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_texture_transform") == 0)
 				{
 					out_texture_view->has_transform = 1;
 					i = cgltf_parse_json_texture_transform(tokens, i + 1, json_chunk, &out_texture_view->transform);
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i + 1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_pbr_metallic_roughness(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_pbr_metallic_roughness* out_pbr)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "metallicFactor") == 0)
 		{
 			++i;
 			out_pbr->metallic_factor = 
 				cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "roughnessFactor") == 0) 
 		{
 			++i;
 			out_pbr->roughness_factor =
 				cgltf_json_to_float(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "baseColorFactor") == 0)
 		{
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->base_color_factor, 4);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "baseColorTexture") == 0)
 		{
 			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
 				&out_pbr->base_color_texture);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "metallicRoughnessTexture") == 0)
 		{
 			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
 				&out_pbr->metallic_roughness_texture);
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_pbr_specular_glossiness(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_pbr_specular_glossiness* out_pbr)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "diffuseFactor") == 0)
 		{
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->diffuse_factor, 4);
 			if (i < 0)
 			{
 				return i;
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularFactor") == 0)
 		{
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_pbr->specular_factor, 3);
 			if (i < 0)
 			{
 				return i;
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "glossinessFactor") == 0)
 		{
 			++i;
 			out_pbr->glossiness_factor = cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "diffuseTexture") == 0)
 		{
 			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk, &out_pbr->diffuse_texture);
 			if (i < 0)
 			{
 				return i;
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "specularGlossinessTexture") == 0)
 		{
 			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk, &out_pbr->specular_glossiness_texture);
 			if (i < 0)
 			{
 				return i;
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_image(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_image* out_image)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j) 
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens + i, json_chunk, "uri") == 0) 
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->uri);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "bufferView") == 0)
 		{
 			++i;
 			out_image->buffer_view = CGLTF_PTRINDEX(cgltf_buffer_view, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "mimeType") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->mime_type);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_image->name);
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i + 1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_sampler(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_sampler* out_sampler)
 {
 	(void)options;
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	out_sampler->wrap_s = 10497;
 	out_sampler->wrap_t = 10497;
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens + i, json_chunk, "magFilter") == 0) 
 		{
 			++i;
 			out_sampler->mag_filter
 				= cgltf_json_to_int(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "minFilter") == 0)
 		{
 			++i;
 			out_sampler->min_filter
 				= cgltf_json_to_int(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "wrapS") == 0)
 		{
 			++i;
 			out_sampler->wrap_s
 				= cgltf_json_to_int(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "wrapT") == 0) 
 		{
 			++i;
 			out_sampler->wrap_t
 				= cgltf_json_to_int(tokens + i, json_chunk);
 			++i;
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i + 1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 
 static int cgltf_parse_json_texture(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_texture* out_texture)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_texture->name);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "sampler") == 0)
 		{
 			++i;
 			out_texture->sampler = CGLTF_PTRINDEX(cgltf_sampler, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "source") == 0) 
 		{
 			++i;
 			out_texture->image = CGLTF_PTRINDEX(cgltf_image, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i + 1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_material(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_material* out_material)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	cgltf_fill_float_array(out_material->pbr_metallic_roughness.base_color_factor, 4, 1.0f);
 	out_material->pbr_metallic_roughness.metallic_factor = 1.0f;
 	out_material->pbr_metallic_roughness.roughness_factor = 1.0f;
 
 	cgltf_fill_float_array(out_material->pbr_specular_glossiness.diffuse_factor, 4, 1.0f);
 	cgltf_fill_float_array(out_material->pbr_specular_glossiness.specular_factor, 3, 1.0f);
 	out_material->pbr_specular_glossiness.glossiness_factor = 1.0f;
 
 	out_material->alpha_cutoff = 0.5f;
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_material->name);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "pbrMetallicRoughness") == 0)
 		{
 			out_material->has_pbr_metallic_roughness = 1;
 			i = cgltf_parse_json_pbr_metallic_roughness(tokens, i + 1, json_chunk, &out_material->pbr_metallic_roughness);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "emissiveFactor") == 0)
 		{
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_material->emissive_factor, 3);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "normalTexture") == 0)
 		{
 			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
 				&out_material->normal_texture);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "occlusionTexture") == 0)
 		{
 			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
 				&out_material->occlusion_texture);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "emissiveTexture") == 0)
 		{
 			i = cgltf_parse_json_texture_view(tokens, i + 1, json_chunk,
 				&out_material->emissive_texture);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "alphaMode") == 0)
 		{
 			++i;
 			if (cgltf_json_strcmp(tokens + i, json_chunk, "OPAQUE") == 0)
 			{
 				out_material->alpha_mode = cgltf_alpha_mode_opaque;
 			}
 			else if (cgltf_json_strcmp(tokens + i, json_chunk, "MASK") == 0)
 			{
 				out_material->alpha_mode = cgltf_alpha_mode_mask;
 			}
 			else if (cgltf_json_strcmp(tokens + i, json_chunk, "BLEND") == 0)
 			{
 				out_material->alpha_mode = cgltf_alpha_mode_blend;
 			}
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "alphaCutoff") == 0)
 		{
 			++i;
 			out_material->alpha_cutoff = cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "doubleSided") == 0)
 		{
 			++i;
 			out_material->double_sided =
 				cgltf_json_to_bool(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int extensions_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < extensions_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_pbrSpecularGlossiness") == 0)
 				{
 					out_material->has_pbr_specular_glossiness = 1;
 					i = cgltf_parse_json_pbr_specular_glossiness(tokens, i + 1, json_chunk, &out_material->pbr_specular_glossiness);
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_materials_unlit") == 0)
 				{
 					out_material->unlit = 1;
 					i = cgltf_skip_json(tokens, i+1);
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_accessors(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_accessor), (void**)&out_data->accessors, &out_data->accessors_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->accessors_count; ++j)
 	{
 		i = cgltf_parse_json_accessor(tokens, i, json_chunk, &out_data->accessors[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_materials(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_material), (void**)&out_data->materials, &out_data->materials_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->materials_count; ++j)
 	{
 		i = cgltf_parse_json_material(options, tokens, i, json_chunk, &out_data->materials[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_images(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_image), (void**)&out_data->images, &out_data->images_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->images_count; ++j)
 	{
 		i = cgltf_parse_json_image(options, tokens, i, json_chunk, &out_data->images[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_textures(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_texture), (void**)&out_data->textures, &out_data->textures_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->textures_count; ++j)
 	{
 		i = cgltf_parse_json_texture(options, tokens, i, json_chunk, &out_data->textures[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_samplers(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_sampler), (void**)&out_data->samplers, &out_data->samplers_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->samplers_count; ++j)
 	{
 		i = cgltf_parse_json_sampler(options, tokens, i, json_chunk, &out_data->samplers[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_buffer_view(jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_buffer_view* out_buffer_view)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "buffer") == 0)
 		{
 			++i;
 			out_buffer_view->buffer = CGLTF_PTRINDEX(cgltf_buffer, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteOffset") == 0)
 		{
 			++i;
 			out_buffer_view->offset =
 					cgltf_json_to_int(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteLength") == 0)
 		{
 			++i;
 			out_buffer_view->size =
 					cgltf_json_to_int(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "byteStride") == 0)
 		{
 			++i;
 			out_buffer_view->stride =
 					cgltf_json_to_int(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "target") == 0)
 		{
 			++i;
 			int type = cgltf_json_to_int(tokens+i, json_chunk);
 			switch (type)
 			{
 			case 34962:
 				type = cgltf_buffer_view_type_vertices;
 				break;
 			case 34963:
 				type = cgltf_buffer_view_type_indices;
 				break;
 			default:
 				type = cgltf_buffer_view_type_invalid;
 				break;
 			}
 			out_buffer_view->type = (cgltf_buffer_view_type)type;
 			++i;
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_buffer_views(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_buffer_view), (void**)&out_data->buffer_views, &out_data->buffer_views_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->buffer_views_count; ++j)
 	{
 		i = cgltf_parse_json_buffer_view(tokens, i, json_chunk, &out_data->buffer_views[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_buffer(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_buffer* out_buffer)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "byteLength") == 0)
 		{
 			++i;
 			out_buffer->size =
 					cgltf_json_to_int(tokens+i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "uri") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_buffer->uri);
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_buffers(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_buffer), (void**)&out_data->buffers, &out_data->buffers_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->buffers_count; ++j)
 	{
 		i = cgltf_parse_json_buffer(options, tokens, i, json_chunk, &out_data->buffers[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_skin(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_skin* out_skin)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_skin->name);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "joints") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_skin->joints, &out_skin->joints_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			for (cgltf_size k = 0; k < out_skin->joints_count; ++k)
 			{
 				out_skin->joints[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
 				++i;
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "skeleton") == 0)
 		{
 			++i;
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
 			out_skin->skeleton = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "inverseBindMatrices") == 0)
 		{
 			++i;
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
 			out_skin->inverse_bind_matrices = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_skins(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_skin), (void**)&out_data->skins, &out_data->skins_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->skins_count; ++j)
 	{
 		i = cgltf_parse_json_skin(options, tokens, i, json_chunk, &out_data->skins[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_camera(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_camera* out_camera)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_camera->name);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
 		{
 			++i;
 			if (cgltf_json_strcmp(tokens + i, json_chunk, "perspective") == 0)
 			{
 				out_camera->type = cgltf_camera_type_perspective;
 			}
 			else if (cgltf_json_strcmp(tokens + i, json_chunk, "orthographic") == 0)
 			{
 				out_camera->type = cgltf_camera_type_orthographic;
 			}
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "perspective") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int data_size = tokens[i].size;
 			++i;
 
 			out_camera->type = cgltf_camera_type_perspective;
 
 			for (int k = 0; k < data_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "aspectRatio") == 0)
 				{
 					++i;
 					out_camera->perspective.aspect_ratio = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "yfov") == 0)
 				{
 					++i;
 					out_camera->perspective.yfov = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "zfar") == 0)
 				{
 					++i;
 					out_camera->perspective.zfar = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "znear") == 0)
 				{
 					++i;
 					out_camera->perspective.znear = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "orthographic") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int data_size = tokens[i].size;
 			++i;
 
 			out_camera->type = cgltf_camera_type_orthographic;
 
 			for (int k = 0; k < data_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "xmag") == 0)
 				{
 					++i;
 					out_camera->orthographic.xmag = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "ymag") == 0)
 				{
 					++i;
 					out_camera->orthographic.ymag = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "zfar") == 0)
 				{
 					++i;
 					out_camera->orthographic.zfar = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "znear") == 0)
 				{
 					++i;
 					out_camera->orthographic.znear = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_cameras(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_camera), (void**)&out_data->cameras, &out_data->cameras_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->cameras_count; ++j)
 	{
 		i = cgltf_parse_json_camera(options, tokens, i, json_chunk, &out_data->cameras[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_light(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_light* out_light)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_light->name);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "color") == 0)
 		{
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_light->color, 3);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "intensity") == 0)
 		{
 			++i;
 			out_light->intensity = cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "type") == 0)
 		{
 			++i;
 			if (cgltf_json_strcmp(tokens + i, json_chunk, "directional") == 0)
 			{
 				out_light->type = cgltf_light_type_directional;
 			}
 			else if (cgltf_json_strcmp(tokens + i, json_chunk, "point") == 0)
 			{
 				out_light->type = cgltf_light_type_point;
 			}
 			else if (cgltf_json_strcmp(tokens + i, json_chunk, "spot") == 0)
 			{
 				out_light->type = cgltf_light_type_spot;
 			}
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "range") == 0)
 		{
 			++i;
 			out_light->range = cgltf_json_to_float(tokens + i, json_chunk);
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "spot") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int data_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < data_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "innerConeAngle") == 0)
 				{
 					++i;
 					out_light->spot_inner_cone_angle = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "outerConeAngle") == 0)
 				{
 					++i;
 					out_light->spot_outer_cone_angle = cgltf_json_to_float(tokens + i, json_chunk);
 					++i;
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_lights(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_light), (void**)&out_data->lights, &out_data->lights_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->lights_count; ++j)
 	{
 		i = cgltf_parse_json_light(options, tokens, i, json_chunk, &out_data->lights[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_node(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_node* out_node)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	out_node->rotation[3] = 1.0f;
 	out_node->scale[0] = 1.0f;
 	out_node->scale[1] = 1.0f;
 	out_node->scale[2] = 1.0f;
 	out_node->matrix[0] = 1.0f;
 	out_node->matrix[5] = 1.0f;
 	out_node->matrix[10] = 1.0f;
 	out_node->matrix[15] = 1.0f;
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_node->name);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "children") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_node->children, &out_node->children_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			for (cgltf_size k = 0; k < out_node->children_count; ++k)
 			{
 				out_node->children[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
 				++i;
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "mesh") == 0)
 		{
 			++i;
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
 			out_node->mesh = CGLTF_PTRINDEX(cgltf_mesh, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "skin") == 0)
 		{
 			++i;
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
 			out_node->skin = CGLTF_PTRINDEX(cgltf_skin, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "camera") == 0)
 		{
 			++i;
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
 			out_node->camera = CGLTF_PTRINDEX(cgltf_camera, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "translation") == 0)
 		{
 			out_node->has_translation = 1;
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->translation, 3);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "rotation") == 0)
 		{
 			out_node->has_rotation = 1;
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->rotation, 4);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "scale") == 0)
 		{
 			out_node->has_scale = 1;
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->scale, 3);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "matrix") == 0)
 		{
 			out_node->has_matrix = 1;
 			i = cgltf_parse_json_float_array(tokens, i + 1, json_chunk, out_node->matrix, 16);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "weights") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_float), (void**)&out_node->weights, &out_node->weights_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			i = cgltf_parse_json_float_array(tokens, i - 1, json_chunk, out_node->weights, (int)out_node->weights_count);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int extensions_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < extensions_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_lights_punctual") == 0)
 				{
 					++i;
 
 					CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 					int data_size = tokens[i].size;
 					++i;
 
 					for (int m = 0; m < data_size; ++m)
 					{
 						CGLTF_CHECK_KEY(tokens[i]);
 
 						if (cgltf_json_strcmp(tokens + i, json_chunk, "light") == 0)
 						{
 							++i;
 							CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_PRIMITIVE);
 							out_node->light = CGLTF_PTRINDEX(cgltf_light, cgltf_json_to_int(tokens + i, json_chunk));
 							++i;
 						}
 						else
 						{
 							i = cgltf_skip_json(tokens, i + 1);
 						}
 
 						if (i < 0)
 						{
 							return i;
 						}
 					}
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_nodes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_node), (void**)&out_data->nodes, &out_data->nodes_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->nodes_count; ++j)
 	{
 		i = cgltf_parse_json_node(options, tokens, i, json_chunk, &out_data->nodes[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_scene(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_scene* out_scene)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_scene->name);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "nodes") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_node*), (void**)&out_scene->nodes, &out_scene->nodes_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			for (cgltf_size k = 0; k < out_scene->nodes_count; ++k)
 			{
 				out_scene->nodes[k] = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
 				++i;
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_scenes(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_scene), (void**)&out_data->scenes, &out_data->scenes_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->scenes_count; ++j)
 	{
 		i = cgltf_parse_json_scene(options, tokens, i, json_chunk, &out_data->scenes[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_animation_sampler(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation_sampler* out_sampler)
 {
 	(void)options;
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "input") == 0)
 		{
 			++i;
 			out_sampler->input = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "output") == 0)
 		{
 			++i;
 			out_sampler->output = CGLTF_PTRINDEX(cgltf_accessor, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "interpolation") == 0)
 		{
 			++i;
 			if (cgltf_json_strcmp(tokens + i, json_chunk, "LINEAR") == 0)
 			{
 				out_sampler->interpolation = cgltf_interpolation_type_linear;
 			}
 			else if (cgltf_json_strcmp(tokens + i, json_chunk, "STEP") == 0)
 			{
 				out_sampler->interpolation = cgltf_interpolation_type_step;
 			}
 			else if (cgltf_json_strcmp(tokens + i, json_chunk, "CUBICSPLINE") == 0)
 			{
 				out_sampler->interpolation = cgltf_interpolation_type_cubic_spline;
 			}
 			++i;
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_animation_channel(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation_channel* out_channel)
 {
 	(void)options;
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "sampler") == 0)
 		{
 			++i;
 			out_channel->sampler = CGLTF_PTRINDEX(cgltf_animation_sampler, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "target") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int target_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < target_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "node") == 0)
 				{
 					++i;
 					out_channel->target_node = CGLTF_PTRINDEX(cgltf_node, cgltf_json_to_int(tokens + i, json_chunk));
 					++i;
 				}
 				else if (cgltf_json_strcmp(tokens+i, json_chunk, "path") == 0)
 				{
 					++i;
 					if (cgltf_json_strcmp(tokens+i, json_chunk, "translation") == 0)
 					{
 						out_channel->target_path = cgltf_animation_path_type_translation;
 					}
 					else if (cgltf_json_strcmp(tokens+i, json_chunk, "rotation") == 0)
 					{
 						out_channel->target_path = cgltf_animation_path_type_rotation;
 					}
 					else if (cgltf_json_strcmp(tokens+i, json_chunk, "scale") == 0)
 					{
 						out_channel->target_path = cgltf_animation_path_type_scale;
 					}
 					else if (cgltf_json_strcmp(tokens+i, json_chunk, "weights") == 0)
 					{
 						out_channel->target_path = cgltf_animation_path_type_weights;
 					}
 					++i;
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_animation(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_animation* out_animation)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "name") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_animation->name);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "samplers") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_animation_sampler), (void**)&out_animation->samplers, &out_animation->samplers_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			for (cgltf_size k = 0; k < out_animation->samplers_count; ++k)
 			{
 				i = cgltf_parse_json_animation_sampler(options, tokens, i, json_chunk, &out_animation->samplers[k]);
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "channels") == 0)
 		{
 			i = cgltf_parse_json_array(options, tokens, i + 1, json_chunk, sizeof(cgltf_animation_channel), (void**)&out_animation->channels, &out_animation->channels_count);
 			if (i < 0)
 			{
 				return i;
 			}
 
 			for (cgltf_size k = 0; k < out_animation->channels_count; ++k)
 			{
 				i = cgltf_parse_json_animation_channel(options, tokens, i, json_chunk, &out_animation->channels[k]);
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static int cgltf_parse_json_animations(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	i = cgltf_parse_json_array(options, tokens, i, json_chunk, sizeof(cgltf_animation), (void**)&out_data->animations, &out_data->animations_count);
 	if (i < 0)
 	{
 		return i;
 	}
 
 	for (cgltf_size j = 0; j < out_data->animations_count; ++j)
 	{
 		i = cgltf_parse_json_animation(options, tokens, i, json_chunk, &out_data->animations[j]);
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 	return i;
 }
 
 static int cgltf_parse_json_asset(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_asset* out_asset)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens+i, json_chunk, "copyright") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->copyright);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "generator") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->generator);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "version") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->version);
 		}
 		else if (cgltf_json_strcmp(tokens+i, json_chunk, "minVersion") == 0)
 		{
 			i = cgltf_parse_json_string(options, tokens, i + 1, json_chunk, &out_asset->min_version);
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i+1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 static cgltf_size cgltf_num_components(cgltf_type type) {
 	switch (type)
 	{
 	case cgltf_type_vec2:
 		return 2;
 	case cgltf_type_vec3:
 		return 3;
 	case cgltf_type_vec4:
 		return 4;
 	case cgltf_type_mat2:
 		return 4;
 	case cgltf_type_mat3:
 		return 9;
 	case cgltf_type_mat4:
 		return 16;
 	case cgltf_type_invalid:
 	case cgltf_type_scalar:
 	default:
 		return 1;
 	}
 }
 
 static cgltf_size cgltf_component_size(cgltf_component_type component_type) {
 	switch (component_type)
 	{
 	case cgltf_component_type_r_8:
 	case cgltf_component_type_r_8u:
 		return 1;
 	case cgltf_component_type_r_16:
 	case cgltf_component_type_r_16u:
 		return 2;
 	case cgltf_component_type_r_32u:
 	case cgltf_component_type_r_32f:
 		return 4;
 	case cgltf_component_type_invalid:
 	default:
 		return 0;
 	}
 }
 
 static cgltf_size cgltf_calc_size(cgltf_type type, cgltf_component_type component_type)
 {
 	cgltf_size component_size = cgltf_component_size(component_type);
 	if (type == cgltf_type_mat2 && component_size == 1)
 	{
 		return 8 * component_size;
 	}
 	else if (type == cgltf_type_mat3 && (component_size == 1 || component_size == 2))
 	{
 		return 12 * component_size;
 	}
 	return component_size * cgltf_num_components(type);
 }
 
 static int cgltf_fixup_pointers(cgltf_data* out_data);
 
 static int cgltf_parse_json_root(cgltf_options* options, jsmntok_t const* tokens, int i, const uint8_t* json_chunk, cgltf_data* out_data)
 {
 	CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 	int size = tokens[i].size;
 	++i;
 
 	for (int j = 0; j < size; ++j)
 	{
 		CGLTF_CHECK_KEY(tokens[i]);
 
 		if (cgltf_json_strcmp(tokens + i, json_chunk, "asset") == 0)
 		{
 			i = cgltf_parse_json_asset(options, tokens, i + 1, json_chunk, &out_data->asset);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "meshes") == 0)
 		{
 			i = cgltf_parse_json_meshes(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "accessors") == 0)
 		{
 			i = cgltf_parse_json_accessors(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "bufferViews") == 0)
 		{
 			i = cgltf_parse_json_buffer_views(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "buffers") == 0)
 		{
 			i = cgltf_parse_json_buffers(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "materials") == 0)
 		{
 			i = cgltf_parse_json_materials(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "images") == 0)
 		{
 			i = cgltf_parse_json_images(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "textures") == 0)
 		{
 			i = cgltf_parse_json_textures(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "samplers") == 0)
 		{
 			i = cgltf_parse_json_samplers(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "skins") == 0)
 		{
 			i = cgltf_parse_json_skins(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "cameras") == 0)
 		{
 			i = cgltf_parse_json_cameras(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "nodes") == 0)
 		{
 			i = cgltf_parse_json_nodes(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scenes") == 0)
 		{
 			i = cgltf_parse_json_scenes(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "scene") == 0)
 		{
 			++i;
 			out_data->scene = CGLTF_PTRINDEX(cgltf_scene, cgltf_json_to_int(tokens + i, json_chunk));
 			++i;
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "animations") == 0)
 		{
 			i = cgltf_parse_json_animations(options, tokens, i + 1, json_chunk, out_data);
 		}
 		else if (cgltf_json_strcmp(tokens + i, json_chunk, "extensions") == 0)
 		{
 			++i;
 
 			CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 			int extensions_size = tokens[i].size;
 			++i;
 
 			for (int k = 0; k < extensions_size; ++k)
 			{
 				CGLTF_CHECK_KEY(tokens[i]);
 
 				if (cgltf_json_strcmp(tokens+i, json_chunk, "KHR_lights_punctual") == 0)
 				{
 					++i;
 
 					CGLTF_CHECK_TOKTYPE(tokens[i], JSMN_OBJECT);
 
 					int data_size = tokens[i].size;
 					++i;
 
 					for (int m = 0; m < data_size; ++m)
 					{
 						CGLTF_CHECK_KEY(tokens[i]);
 
 						if (cgltf_json_strcmp(tokens + i, json_chunk, "lights") == 0)
 						{
 							i = cgltf_parse_json_lights(options, tokens, i + 1, json_chunk, out_data);
 						}
 						else
 						{
 							i = cgltf_skip_json(tokens, i + 1);
 						}
 
 						if (i < 0)
 						{
 							return i;
 						}
 					}
 				}
 				else
 				{
 					i = cgltf_skip_json(tokens, i+1);
 				}
 
 				if (i < 0)
 				{
 					return i;
 				}
 			}
 		}
 		else
 		{
 			i = cgltf_skip_json(tokens, i + 1);
 		}
 
 		if (i < 0)
 		{
 			return i;
 		}
 	}
 
 	return i;
 }
 
 cgltf_result cgltf_parse_json(cgltf_options* options, const uint8_t* json_chunk, cgltf_size size, cgltf_data** out_data)
 {
 	jsmn_parser parser = { 0, 0, 0 };
 
 	if (options->json_token_count == 0)
 	{
 		int token_count = jsmn_parse(&parser, (const char*)json_chunk, size, NULL, 0);
 
 		if (token_count <= 0)
 		{
 			return cgltf_result_invalid_json;
 		}
 
 		options->json_token_count = token_count;
 	}
 
 	jsmntok_t* tokens = (jsmntok_t*)options->memory_alloc(options->memory_user_data, sizeof(jsmntok_t) * options->json_token_count);
 
 	if (!tokens)
 	{
 		return cgltf_result_out_of_memory;
 	}
 
 	jsmn_init(&parser);
 
 	int token_count = jsmn_parse(&parser, (const char*)json_chunk, size, tokens, options->json_token_count);
 
 	if (token_count <= 0)
 	{
 		options->memory_free(options->memory_user_data, tokens);
 		return cgltf_result_invalid_json;
 	}
 
 	cgltf_data* data = (cgltf_data*)options->memory_alloc(options->memory_user_data, sizeof(cgltf_data));
 
 	if (!data)
 	{
 		options->memory_free(options->memory_user_data, tokens);
 		return cgltf_result_out_of_memory;
 	}
 
 	memset(data, 0, sizeof(cgltf_data));
 	data->memory_free = options->memory_free;
 	data->memory_user_data = options->memory_user_data;
 
 	int i = cgltf_parse_json_root(options, tokens, 0, json_chunk, data);
 
 	options->memory_free(options->memory_user_data, tokens);
 
 	if (i < 0)
 	{
 		cgltf_free(data);
 		return (i == CGLTF_ERROR_NOMEM) ? cgltf_result_out_of_memory : cgltf_result_invalid_gltf;
 	}
 
 	if (cgltf_fixup_pointers(data) < 0)
 	{
 		cgltf_free(data);
 		return cgltf_result_invalid_gltf;
 	}
 
 	*out_data = data;
 
 	return cgltf_result_success;
 }
 
 static int cgltf_fixup_pointers(cgltf_data* data)
 {
 	for (cgltf_size i = 0; i < data->meshes_count; ++i)
 	{
 		for (cgltf_size j = 0; j < data->meshes[i].primitives_count; ++j)
 		{
 			CGLTF_PTRFIXUP(data->meshes[i].primitives[j].indices, data->accessors, data->accessors_count);
 			CGLTF_PTRFIXUP(data->meshes[i].primitives[j].material, data->materials, data->materials_count);
 
 			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].attributes_count; ++k)
 			{
 				CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].attributes[k].data, data->accessors, data->accessors_count);
 			}
 
 			for (cgltf_size k = 0; k < data->meshes[i].primitives[j].targets_count; ++k)
 			{
 				for (cgltf_size m = 0; m < data->meshes[i].primitives[j].targets[k].attributes_count; ++m)
 				{
 					CGLTF_PTRFIXUP_REQ(data->meshes[i].primitives[j].targets[k].attributes[m].data, data->accessors, data->accessors_count);
 				}
 			}
 		}
 	}
 
 	for (cgltf_size i = 0; i < data->accessors_count; ++i)
 	{
 		CGLTF_PTRFIXUP(data->accessors[i].buffer_view, data->buffer_views, data->buffer_views_count);
 
 		if (data->accessors[i].is_sparse)
 		{
 			CGLTF_PTRFIXUP_REQ(data->accessors[i].sparse.indices_buffer_view, data->buffer_views, data->buffer_views_count);
 			CGLTF_PTRFIXUP_REQ(data->accessors[i].sparse.values_buffer_view, data->buffer_views, data->buffer_views_count);
 		}
 
 		if (data->accessors[i].buffer_view)
 		{
 			data->accessors[i].stride = data->accessors[i].buffer_view->stride;
 		}
 
 		if (data->accessors[i].stride == 0)
 		{
 			data->accessors[i].stride = cgltf_calc_size(data->accessors[i].type, data->accessors[i].component_type);
 		}
 	}
 
 	for (cgltf_size i = 0; i < data->textures_count; ++i)
 	{
 		CGLTF_PTRFIXUP(data->textures[i].image, data->images, data->images_count);
 		CGLTF_PTRFIXUP(data->textures[i].sampler, data->samplers, data->samplers_count);
 	}
 
 	for (cgltf_size i = 0; i < data->images_count; ++i)
 	{
 		CGLTF_PTRFIXUP(data->images[i].buffer_view, data->buffer_views, data->buffer_views_count);
 	}
 
 	for (cgltf_size i = 0; i < data->materials_count; ++i)
 	{
 		CGLTF_PTRFIXUP(data->materials[i].normal_texture.texture, data->textures, data->textures_count);
 		CGLTF_PTRFIXUP(data->materials[i].emissive_texture.texture, data->textures, data->textures_count);
 		CGLTF_PTRFIXUP(data->materials[i].occlusion_texture.texture, data->textures, data->textures_count);
 
 		CGLTF_PTRFIXUP(data->materials[i].pbr_metallic_roughness.base_color_texture.texture, data->textures, data->textures_count);
 		CGLTF_PTRFIXUP(data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture, data->textures, data->textures_count);
 
 		CGLTF_PTRFIXUP(data->materials[i].pbr_specular_glossiness.diffuse_texture.texture, data->textures, data->textures_count);
 		CGLTF_PTRFIXUP(data->materials[i].pbr_specular_glossiness.specular_glossiness_texture.texture, data->textures, data->textures_count);
 	}
 
 	for (cgltf_size i = 0; i < data->buffer_views_count; ++i)
 	{
 		CGLTF_PTRFIXUP_REQ(data->buffer_views[i].buffer, data->buffers, data->buffers_count);
 	}
 
 	for (cgltf_size i = 0; i < data->skins_count; ++i)
 	{
 		for (cgltf_size j = 0; j < data->skins[i].joints_count; ++j)
 		{
 			CGLTF_PTRFIXUP_REQ(data->skins[i].joints[j], data->nodes, data->nodes_count);
 		}
 
 		CGLTF_PTRFIXUP(data->skins[i].skeleton, data->nodes, data->nodes_count);
 		CGLTF_PTRFIXUP(data->skins[i].inverse_bind_matrices, data->accessors, data->accessors_count);
 	}
 
 	for (cgltf_size i = 0; i < data->nodes_count; ++i)
 	{
 		for (cgltf_size j = 0; j < data->nodes[i].children_count; ++j)
 		{
 			CGLTF_PTRFIXUP_REQ(data->nodes[i].children[j], data->nodes, data->nodes_count);
 
 			if (data->nodes[i].children[j]->parent)
 			{
 				return CGLTF_ERROR_JSON;
 			}
 
 			data->nodes[i].children[j]->parent = &data->nodes[i];
 		}
 
 		CGLTF_PTRFIXUP(data->nodes[i].mesh, data->meshes, data->meshes_count);
 		CGLTF_PTRFIXUP(data->nodes[i].skin, data->skins, data->skins_count);
 		CGLTF_PTRFIXUP(data->nodes[i].camera, data->cameras, data->cameras_count);
 		CGLTF_PTRFIXUP(data->nodes[i].light, data->lights, data->lights_count);
 	}
 
 	for (cgltf_size i = 0; i < data->scenes_count; ++i)
 	{
 		for (cgltf_size j = 0; j < data->scenes[i].nodes_count; ++j)
 		{
 			CGLTF_PTRFIXUP_REQ(data->scenes[i].nodes[j], data->nodes, data->nodes_count);
 
 			if (data->scenes[i].nodes[j]->parent)
 			{
 				return CGLTF_ERROR_JSON;
 			}
 		}
 	}
 
 	CGLTF_PTRFIXUP(data->scene, data->scenes, data->scenes_count);
 
 	for (cgltf_size i = 0; i < data->animations_count; ++i)
 	{
 		for (cgltf_size j = 0; j < data->animations[i].samplers_count; ++j)
 		{
 			CGLTF_PTRFIXUP_REQ(data->animations[i].samplers[j].input, data->accessors, data->accessors_count);
 			CGLTF_PTRFIXUP_REQ(data->animations[i].samplers[j].output, data->accessors, data->accessors_count);
 		}
 
 		for (cgltf_size j = 0; j < data->animations[i].channels_count; ++j)
 		{
 			CGLTF_PTRFIXUP_REQ(data->animations[i].channels[j].sampler, data->animations[i].samplers, data->animations[i].samplers_count);
 			CGLTF_PTRFIXUP(data->animations[i].channels[j].target_node, data->nodes, data->nodes_count);
 		}
 	}
 
 	return 0;
 }
 
 /*
  * -- jsmn.c start --
  * Source: https://github.com/zserge/jsmn
  * License: MIT
  *
  * Copyright (c) 2010 Serge A. Zaitsev
 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
 
 /**
  * Allocates a fresh unused token from the token pull.
  */
 static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser,
 				   jsmntok_t *tokens, size_t num_tokens) {
 	jsmntok_t *tok;
 	if (parser->toknext >= num_tokens) {
 		return NULL;
 	}
 	tok = &tokens[parser->toknext++];
 	tok->start = tok->end = -1;
 	tok->size = 0;
 #ifdef JSMN_PARENT_LINKS
 	tok->parent = -1;
 #endif
 	return tok;
 }
 
 /**
  * Fills token type and boundaries.
  */
 static void jsmn_fill_token(jsmntok_t *token, jsmntype_t type,
 			    int start, int end) {
 	token->type = type;
 	token->start = start;
 	token->end = end;
 	token->size = 0;
 }
 
 /**
  * Fills next available token with JSON primitive.
  */
 static int jsmn_parse_primitive(jsmn_parser *parser, const char *js,
 				size_t len, jsmntok_t *tokens, size_t num_tokens) {
 	jsmntok_t *token;
 	int start;
 
 	start = parser->pos;
 
 	for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
 		switch (js[parser->pos]) {
 #ifndef JSMN_STRICT
 		/* In strict mode primitive must be followed by "," or "}" or "]" */
 		case ':':
 #endif
 		case '\t' : case '\r' : case '\n' : case ' ' :
 		case ','  : case ']'  : case '}' :
 			goto found;
 		}
 		if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
 			parser->pos = start;
 			return JSMN_ERROR_INVAL;
 		}
 	}
 #ifdef JSMN_STRICT
 	/* In strict mode primitive must be followed by a comma/object/array */
 	parser->pos = start;
 	return JSMN_ERROR_PART;
 #endif
 
 found:
 	if (tokens == NULL) {
 		parser->pos--;
 		return 0;
 	}
 	token = jsmn_alloc_token(parser, tokens, num_tokens);
 	if (token == NULL) {
 		parser->pos = start;
 		return JSMN_ERROR_NOMEM;
 	}
 	jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
 #ifdef JSMN_PARENT_LINKS
 	token->parent = parser->toksuper;
 #endif
 	parser->pos--;
 	return 0;
 }
 
 /**
  * Fills next token with JSON string.
  */
 static int jsmn_parse_string(jsmn_parser *parser, const char *js,
 			     size_t len, jsmntok_t *tokens, size_t num_tokens) {
 	jsmntok_t *token;
 
 	int start = parser->pos;
 
 	parser->pos++;
 
 	/* Skip starting quote */
 	for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
 		char c = js[parser->pos];
 
 		/* Quote: end of string */
 		if (c == '\"') {
 			if (tokens == NULL) {
 				return 0;
 			}
 			token = jsmn_alloc_token(parser, tokens, num_tokens);
 			if (token == NULL) {
 				parser->pos = start;
 				return JSMN_ERROR_NOMEM;
 			}
 			jsmn_fill_token(token, JSMN_STRING, start+1, parser->pos);
 #ifdef JSMN_PARENT_LINKS
 			token->parent = parser->toksuper;
 #endif
 			return 0;
 		}
 
 		/* Backslash: Quoted symbol expected */
 		if (c == '\\' && parser->pos + 1 < len) {
 			int i;
 			parser->pos++;
 			switch (js[parser->pos]) {
 			/* Allowed escaped symbols */
 			case '\"': case '/' : case '\\' : case 'b' :
 			case 'f' : case 'r' : case 'n'  : case 't' :
 				break;
 				/* Allows escaped symbol \uXXXX */
 			case 'u':
 				parser->pos++;
 				for(i = 0; i < 4 && parser->pos < len && js[parser->pos] != '\0'; i++) {
 					/* If it isn't a hex character we have an error */
 					if(!((js[parser->pos] >= 48 && js[parser->pos] <= 57) || /* 0-9 */
 					     (js[parser->pos] >= 65 && js[parser->pos] <= 70) || /* A-F */
 					     (js[parser->pos] >= 97 && js[parser->pos] <= 102))) { /* a-f */
 						parser->pos = start;
 						return JSMN_ERROR_INVAL;
 					}
 					parser->pos++;
 				}
 				parser->pos--;
 				break;
 				/* Unexpected symbol */
 			default:
 				parser->pos = start;
 				return JSMN_ERROR_INVAL;
 			}
 		}
 	}
 	parser->pos = start;
 	return JSMN_ERROR_PART;
 }
 
 /**
  * Parse JSON string and fill tokens.
  */
 static int jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
 	       jsmntok_t *tokens, size_t num_tokens) {
 	int r;
 	int i;
 	jsmntok_t *token;
 	int count = parser->toknext;
 
 	for (; parser->pos < len && js[parser->pos] != '\0'; parser->pos++) {
 		char c;
 		jsmntype_t type;
 
 		c = js[parser->pos];
 		switch (c) {
 		case '{': case '[':
 			count++;
 			if (tokens == NULL) {
 				break;
 			}
 			token = jsmn_alloc_token(parser, tokens, num_tokens);
 			if (token == NULL)
 				return JSMN_ERROR_NOMEM;
 			if (parser->toksuper != -1) {
 				tokens[parser->toksuper].size++;
 #ifdef JSMN_PARENT_LINKS
 				token->parent = parser->toksuper;
 #endif
 			}
 			token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
 			token->start = parser->pos;
 			parser->toksuper = parser->toknext - 1;
 			break;
 		case '}': case ']':
 			if (tokens == NULL)
 				break;
 			type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
 #ifdef JSMN_PARENT_LINKS
 			if (parser->toknext < 1) {
 				return JSMN_ERROR_INVAL;
 			}
 			token = &tokens[parser->toknext - 1];
 			for (;;) {
 				if (token->start != -1 && token->end == -1) {
 					if (token->type != type) {
 						return JSMN_ERROR_INVAL;
 					}
 					token->end = parser->pos + 1;
 					parser->toksuper = token->parent;
 					break;
 				}
 				if (token->parent == -1) {
 					if(token->type != type || parser->toksuper == -1) {
 						return JSMN_ERROR_INVAL;
 					}
 					break;
 				}
 				token = &tokens[token->parent];
 			}
 #else
 			for (i = parser->toknext - 1; i >= 0; i--) {
 				token = &tokens[i];
 				if (token->start != -1 && token->end == -1) {
 					if (token->type != type) {
 						return JSMN_ERROR_INVAL;
 					}
 					parser->toksuper = -1;
 					token->end = parser->pos + 1;
 					break;
 				}
 			}
 			/* Error if unmatched closing bracket */
 			if (i == -1) return JSMN_ERROR_INVAL;
 			for (; i >= 0; i--) {
 				token = &tokens[i];
 				if (token->start != -1 && token->end == -1) {
 					parser->toksuper = i;
 					break;
 				}
 			}
 #endif
 			break;
 		case '\"':
 			r = jsmn_parse_string(parser, js, len, tokens, num_tokens);
 			if (r < 0) return r;
 			count++;
 			if (parser->toksuper != -1 && tokens != NULL)
 				tokens[parser->toksuper].size++;
 			break;
 		case '\t' : case '\r' : case '\n' : case ' ':
 			break;
 		case ':':
 			parser->toksuper = parser->toknext - 1;
 			break;
 		case ',':
 			if (tokens != NULL && parser->toksuper != -1 &&
 					tokens[parser->toksuper].type != JSMN_ARRAY &&
 					tokens[parser->toksuper].type != JSMN_OBJECT) {
 #ifdef JSMN_PARENT_LINKS
 				parser->toksuper = tokens[parser->toksuper].parent;
 #else
 				for (i = parser->toknext - 1; i >= 0; i--) {
 					if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT) {
 						if (tokens[i].start != -1 && tokens[i].end == -1) {
 							parser->toksuper = i;
 							break;
 						}
 					}
 				}
 #endif
 			}
 			break;
 #ifdef JSMN_STRICT
 			/* In strict mode primitives are: numbers and booleans */
 		case '-': case '0': case '1' : case '2': case '3' : case '4':
 		case '5': case '6': case '7' : case '8': case '9':
 		case 't': case 'f': case 'n' :
 			/* And they must not be keys of the object */
 			if (tokens != NULL && parser->toksuper != -1) {
 				jsmntok_t *t = &tokens[parser->toksuper];
 				if (t->type == JSMN_OBJECT ||
 						(t->type == JSMN_STRING && t->size != 0)) {
 					return JSMN_ERROR_INVAL;
 				}
 			}
 #else
 			/* In non-strict mode every unquoted value is a primitive */
 		default:
 #endif
 			r = jsmn_parse_primitive(parser, js, len, tokens, num_tokens);
 			if (r < 0) return r;
 			count++;
 			if (parser->toksuper != -1 && tokens != NULL)
 				tokens[parser->toksuper].size++;
 			break;
 
 #ifdef JSMN_STRICT
 			/* Unexpected char in strict mode */
 		default:
 			return JSMN_ERROR_INVAL;
 #endif
 		}
 	}
 
 	if (tokens != NULL) {
 		for (i = parser->toknext - 1; i >= 0; i--) {
 			/* Unmatched opened object or array */
 			if (tokens[i].start != -1 && tokens[i].end == -1) {
 				return JSMN_ERROR_PART;
 			}
 		}
 	}
 
 	return count;
 }
 
 /**
  * Creates a new parser based over a given  buffer with an array of tokens
  * available.
  */
 static void jsmn_init(jsmn_parser *parser) {
 	parser->pos = 0;
 	parser->toknext = 0;
 	parser->toksuper = -1;
 }
 /*
  * -- jsmn.c end --
  */
 
 #endif /* #ifdef CGLTF_IMPLEMENTATION */
 
 /* cgltf is distributed under MIT license:
  *
  * Copyright (c) 2018 Johannes Kuhlmann
 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
 
  * The above copyright notice and this permission notice shall be included in all
  * copies or substantial portions of the Software.
 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */