lpnf
/
lovr
mirror of https://github.com/bjornbytes/lovr.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Start OBJ parser; Optimize glTF parsing;

This commit is contained in:
bjorn 2019-01-23 11:15:01 -08:00 committed by Bjorn Swenson
parent 9136c7e3c1
commit 6857b01ac0
7 changed files with 1092 additions and 885 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CMakeLists.txt
View File

@ -380,6 +380,8 @@ if(LOVR_ENABLE_DATA)
src/data/audioStream.c
src/data/blob.c
src/data/modelData.c
src/data/modelData_gltf.c
src/data/modelData_obj.c
src/data/rasterizer.c
src/data/soundData.c
src/data/textureData.c

902
src/data/modelData.c
View File

@ -1,866 +1,14 @@
#include "data/modelData.h"
#include "lib/math.h"
#include "lib/jsmn/jsmn.h"
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#define MAGIC_glTF 0x46546c67
#define MAGIC_JSON 0x4e4f534a
#define MAGIC_BIN 0x004e4942
#define STR_EQ(k, s) !strncmp(k.data, s, k.length)
#define NOM_VALUE(j, t) nomValue(j, t, 1, 0)
#define NOM_INT(j, t) strtol(j + (t++)->start, NULL, 10)
#define NOM_STR(j, t) (gltfString) { (char* )j + t->start, t->end - t->start }; t++
#define NOM_BOOL(j, t) (*(j + (t++)->start) == 't')
#define NOM_FLOAT(j, t) strtof(j + (t++)->start, NULL)
typedef struct {
char* data;
size_t length;
} gltfString;
typedef struct {
uint32_t magic;
uint32_t version;
uint32_t length;
} gltfHeader;
typedef struct {
uint32_t length;
uint32_t type;
} gltfChunkHeader;
typedef struct {
int input;
int output;
SmoothMode smoothing;
} gltfAnimationSampler;
typedef struct {
uint32_t primitiveIndex;
uint32_t primitiveCount;
} gltfMesh;
typedef struct {
TextureFilter filter;
TextureWrap wrap;
} gltfSampler;
typedef struct {
uint32_t node;
uint32_t nodeCount;
} gltfScene;
static int nomValue(const char* data, jsmntok_t* token, int count, int sum) {
if (count == 0) { return sum; }
switch (token->type) {
case JSMN_OBJECT: return nomValue(data, token + 1, count - 1 + 2 * token->size, sum + 1);
case JSMN_ARRAY: return nomValue(data, token + 1, count - 1 + token->size, sum + 1);
default: return nomValue(data, token + 1, count - 1, sum + 1);
}
}
// Kinda like total += sum(map(arr, obj => #obj[key]))
static jsmntok_t* aggregate(const char* json, jsmntok_t* token, const char* target, int* total) {
for (int i = (token++)->size; i > 0; i--) {
if (token->size > 0) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, target)) {
*total += token->size;
}
token += NOM_VALUE(json, token);
}
}
}
return token;
}
static jsmntok_t* parseTextureInfo(const char* json, jsmntok_t* token, int* dest) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "index")) {
*dest = NOM_INT(json, token);
} else if (STR_EQ(key, "texCoord")) {
lovrAssert(NOM_INT(json, token) == 0, "Only one set of texture coordinates is supported");
} else {
token += NOM_VALUE(json, token);
}
}
return token;
}
ModelData* lovrModelDataInit(ModelData* model, Blob* source, ModelDataIO io) {
uint8_t* data = source->data;
gltfHeader* header = (gltfHeader*) data;
bool glb = header->magic == MAGIC_glTF;
const char *json, *binData;
size_t jsonLength, binLength;
ptrdiff_t binOffset;
char basePath[1024];
strncpy(basePath, source->name, 1023);
char* slash = strrchr(basePath, '/');
if (slash) *slash = 0;
if (glb) {
gltfChunkHeader* jsonHeader = (gltfChunkHeader*) &header[1];
lovrAssert(jsonHeader->type == MAGIC_JSON, "Invalid JSON header");
json = (char*) &jsonHeader[1];
jsonLength = jsonHeader->length;
gltfChunkHeader* binHeader = (gltfChunkHeader*) &json[jsonLength];
lovrAssert(binHeader->type == MAGIC_BIN, "Invalid BIN header");
binData = (char*) &binHeader[1];
binLength = binHeader->length;
binOffset = (char*) binData - (char*) source->data;
} else {
json = (char*) data;
jsonLength = source->size;
binData = NULL;
binLength = 0;
binOffset = 0;
if (lovrModelDataInitGltf(model, source, io)) {
return model;
} else if (lovrModelDataInitObj(model, source, io)) {
return model;
}
jsmn_parser parser;
jsmn_init(&parser);
int tokenCount = jsmn_parse(&parser, json, jsonLength, NULL, 0);
jsmntok_t* tokens = malloc(tokenCount * sizeof(jsmntok_t));
jsmn_init(&parser);
tokenCount = jsmn_parse(&parser, json, jsonLength, tokens, tokenCount);
lovrAssert(tokenCount >= 0, "Invalid JSON");
lovrAssert(tokens[0].type == JSMN_OBJECT, "No root object");
// Preparse
struct {
size_t totalSize;
jsmntok_t* animations;
jsmntok_t* attributes;
jsmntok_t* buffers;
jsmntok_t* bufferViews;
jsmntok_t* images;
jsmntok_t* textures;
jsmntok_t* materials;
jsmntok_t* meshes;
jsmntok_t* nodes;
jsmntok_t* scenes;
jsmntok_t* skins;
int animationChannelCount;
int childCount;
int jointCount;
int charCount;
int sceneCount;
} info = { 0 };
gltfAnimationSampler* animationSamplers = NULL;
gltfMesh* meshes = NULL;
gltfSampler* samplers = NULL;
gltfScene* scenes = NULL;
int rootScene = 0;
for (jsmntok_t* token = tokens + 1; token < tokens + tokenCount;) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "accessors")) {
info.attributes = token;
model->attributeCount = token->size;
info.totalSize += token->size * sizeof(ModelAttribute);
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "animations")){
info.animations = token;
model->animationCount = token->size;
info.totalSize += token->size * sizeof(ModelAnimation);
size_t samplerCount = 0;
jsmntok_t* t = token;
for (int i = (t++)->size; i > 0; i--) {
if (t->size > 0) {
for (int k = (t++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, t);
if (STR_EQ(key, "channels")) { info.animationChannelCount += t->size; }
else if (STR_EQ(key, "samplers")) { samplerCount += t->size; }
else if (STR_EQ(key, "name")) {
info.charCount += t->end - t->start + 1;
info.totalSize += t->end - t->start + 1;
}
t += NOM_VALUE(json, t);
}
}
}
info.totalSize += info.animationChannelCount * sizeof(ModelAnimationChannel);
animationSamplers = malloc(samplerCount * sizeof(gltfAnimationSampler));
gltfAnimationSampler* sampler = animationSamplers;
for (int i = (token++)->size; i > 0; i--) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "samplers")) {
for (int j = (token++)->size; j > 0; j--, sampler++) {
sampler->input = -1;
sampler->output = -1;
sampler->smoothing = SMOOTH_LINEAR;
for (int kk = (token++)->size; kk > 0; kk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "input")) { sampler->input = NOM_INT(json, token); }
else if (STR_EQ(key, "output")) { sampler->output = NOM_INT(json, token); }
else if (STR_EQ(key, "interpolation")) {
gltfString smoothing = NOM_STR(json, token);
if (STR_EQ(smoothing, "LINEAR")) { sampler->smoothing = SMOOTH_LINEAR; }
else if (STR_EQ(smoothing, "STEP")) { sampler->smoothing = SMOOTH_STEP; }
else if (STR_EQ(smoothing, "CUBICSPLINE")) { sampler->smoothing = SMOOTH_CUBIC; }
else { lovrThrow("Unknown animation sampler interpolation"); }
} else {
token += NOM_VALUE(json, token);
}
}
}
} else {
token += NOM_VALUE(json, token);
}
}
}
} else if (STR_EQ(key, "buffers")) {
info.buffers = token;
model->blobCount = token->size;
info.totalSize += token->size * sizeof(Blob*);
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "bufferViews")) {
info.bufferViews = token;
model->bufferCount = token->size;
info.totalSize += token->size * sizeof(ModelBuffer);
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "images")) {
info.images = token;
model->imageCount = token->size;
info.totalSize += token->size * sizeof(TextureData*);
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "samplers")) {
samplers = malloc(token->size * sizeof(gltfSampler));
gltfSampler* sampler = samplers;
for (int i = (token++)->size; i > 0; i--, sampler++) {
sampler->filter.mode = FILTER_TRILINEAR;
sampler->wrap.s = sampler->wrap.t = sampler->wrap.r = WRAP_REPEAT;
int min = -1;
int mag = -1;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "minFilter")) { min = NOM_INT(json, token); }
else if (STR_EQ(key, "magFilter")) { mag = NOM_INT(json, token); }
else if (STR_EQ(key, "wrapS")) {
switch (NOM_INT(json, token)) {
case 33071: sampler->wrap.s = WRAP_CLAMP; break;
case 33648: sampler->wrap.s = WRAP_MIRRORED_REPEAT; break;
case 10497: sampler->wrap.s = WRAP_REPEAT; break;
default: lovrThrow("Unknown sampler wrapS mode for sampler %d", i);
}
} else if (STR_EQ(key, "wrapT")) {
switch (NOM_INT(json, token)) {
case 33071: sampler->wrap.t = WRAP_CLAMP; break;
case 33648: sampler->wrap.t = WRAP_MIRRORED_REPEAT; break;
case 10497: sampler->wrap.t = WRAP_REPEAT; break;
default: lovrThrow("Unknown sampler wrapT mode for sampler %d", i);
}
} else {
token += NOM_VALUE(json, token);
}
}
if (min == 9728 || min == 9984 || min == 9986 || mag == 9728) {
sampler->filter.mode = FILTER_NEAREST;
} else {
switch (min) {
case 9729: sampler->filter.mode = FILTER_BILINEAR; break;
case 9985: sampler->filter.mode = FILTER_BILINEAR; break;
case 9987: sampler->filter.mode = FILTER_TRILINEAR; break;
}
}
}
} else if (STR_EQ(key, "textures")) {
info.textures = token;
model->textureCount = token->size;
info.totalSize += token->size * sizeof(ModelTexture);
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "materials")) {
info.materials = token;
model->materialCount = token->size;
info.totalSize += token->size * sizeof(ModelMaterial);
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "meshes")) {
info.meshes = token;
meshes = malloc(token->size * sizeof(gltfMesh));
gltfMesh* mesh = meshes;
model->primitiveCount = 0;
for (int i = (token++)->size; i > 0; i--, mesh++) {
mesh->primitiveCount = 0;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "primitives")) {
mesh->primitiveIndex = model->primitiveCount;
mesh->primitiveCount += token->size;
model->primitiveCount += token->size;
}
token += NOM_VALUE(json, token);
}
}
info.totalSize += model->primitiveCount * sizeof(ModelPrimitive);
} else if (STR_EQ(key, "nodes")) {
info.nodes = token;
model->nodeCount += token->size;
info.totalSize += token->size * sizeof(ModelNode);
token = aggregate(json, token, "children", &info.childCount);
info.totalSize += info.childCount * sizeof(uint32_t);
} else if (STR_EQ(key, "scene")) {
rootScene = NOM_INT(json, token);
} else if (STR_EQ(key, "scenes")) {
info.scenes = token;
info.sceneCount = token->size;
scenes = malloc(info.sceneCount * sizeof(gltfScene));
gltfScene* scene = scenes;
for (int i = (token++)->size; i > 0; i--, scene++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "nodes")) {
scene->nodeCount = token->size;
jsmntok_t* t = token + 1;
scene->node = NOM_INT(json, t);
}
token += NOM_VALUE(json, token);
}
}
} else if (STR_EQ(key, "skins")) {
info.skins = token;
model->skinCount = token->size;
info.totalSize += token->size * sizeof(ModelSkin);
token = aggregate(json, token, "joints", &info.jointCount);
info.totalSize += info.jointCount * sizeof(uint32_t);
} else {
token += NOM_VALUE(json, token);
}
}
// Make space for fake root node if the root scene has multiple root nodes
if (info.sceneCount > 0 && scenes[rootScene].nodeCount > 1) {
info.childCount += model->nodeCount;
info.totalSize += sizeof(ModelNode) + model->nodeCount * sizeof(uint32_t);
model->nodeCount++;
}
// Allocate
size_t offset = 0;
int childIndex = 0;
model->data = calloc(1, info.totalSize);
model->animations = (ModelAnimation*) (model->data + offset), offset += model->animationCount * sizeof(ModelAnimation);
model->attributes = (ModelAttribute*) (model->data + offset), offset += model->attributeCount * sizeof(ModelAttribute);
model->blobs = (Blob**) (model->data + offset), offset += model->blobCount * sizeof(Blob*);
model->buffers = (ModelBuffer*) (model->data + offset), offset += model->bufferCount * sizeof(ModelBuffer);
model->images = (TextureData**) (model->data + offset), offset += model->imageCount * sizeof(TextureData*);
model->textures = (ModelTexture*) (model->data + offset), offset += model->textureCount * sizeof(ModelTexture);
model->materials = (ModelMaterial*) (model->data + offset), offset += model->materialCount * sizeof(ModelMaterial);
model->primitives = (ModelPrimitive*) (model->data + offset), offset += model->primitiveCount * sizeof(ModelPrimitive);
model->nodes = (ModelNode*) (model->data + offset), offset += model->nodeCount * sizeof(ModelNode);
model->skins = (ModelSkin*) (model->data + offset), offset += model->skinCount * sizeof(ModelSkin);
ModelAnimationChannel* channels = (ModelAnimationChannel*) (model->data + offset); offset += info.animationChannelCount * sizeof(ModelAnimationChannel);
uint32_t* nodeChildren = (uint32_t*) (model->data + offset); offset += info.childCount * sizeof(uint32_t);
uint32_t* skinJoints = (uint32_t*) (model->data + offset); offset += info.jointCount * sizeof(uint32_t);
char* chars = (char*) (model->data + offset); offset += info.charCount * sizeof(char);
// Blobs
if (info.buffers) {
jsmntok_t* token = info.buffers;
Blob** blob = model->blobs;
for (int i = (token++)->size; i > 0; i--, blob++) {
gltfString uri = { 0 };
size_t size = 0;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "byteLength")) { size = NOM_INT(json, token); }
else if (STR_EQ(key, "uri")) { uri = NOM_STR(json, token); }
else { token += NOM_VALUE(json, token); }
}
if (uri.data) {
lovrAssert(strncmp("data:", uri.data, strlen("data:")), "Base64 URIs aren't supported yet");;
size_t bytesRead;
char filename[1024];
lovrAssert(uri.length < 1024, "Buffer filename is too long");
snprintf(filename, 1023, "%s/%.*s", basePath, (int) uri.length, uri.data);
*blob = lovrBlobCreate(io.read(filename, &bytesRead), size, NULL);
lovrAssert((*blob)->data && bytesRead == size, "Unable to read %s", filename);
} else {
lovrAssert(glb, "Buffer is missing URI");
lovrRetain(source);
*blob = source;
}
}
}
// Buffers
if (info.bufferViews) {
jsmntok_t* token = info.bufferViews;
ModelBuffer* buffer = model->buffers;
for (int i = (token++)->size; i > 0; i--, buffer++) {
size_t offset = 0;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "buffer")) { buffer->data = model->blobs[NOM_INT(json, token)]->data; }
else if (STR_EQ(key, "byteOffset")) { offset = NOM_INT(json, token); }
else if (STR_EQ(key, "byteLength")) { buffer->size = NOM_INT(json, token); }
else if (STR_EQ(key, "byteStride")) { buffer->stride = NOM_INT(json, token); }
else { token += NOM_VALUE(json, token); }
}
if (buffer->data && buffer->data == source->data && glb) {
offset += binOffset;
}
buffer->data = (char*) buffer->data + offset;
}
}
// Attributes
if (info.attributes) {
jsmntok_t* token = info.attributes;
ModelAttribute* attribute = model->attributes;
for (int i = (token++)->size; i > 0; i--, attribute++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "bufferView")) { attribute->buffer = NOM_INT(json, token); }
else if (STR_EQ(key, "count")) { attribute->count = NOM_INT(json, token); }
else if (STR_EQ(key, "byteOffset")) { attribute->offset = NOM_INT(json, token); }
else if (STR_EQ(key, "normalized")) { attribute->normalized = NOM_BOOL(json, token); }
else if (STR_EQ(key, "componentType")) {
switch (NOM_INT(json, token)) {
case 5120: attribute->type = I8; break;
case 5121: attribute->type = U8; break;
case 5122: attribute->type = I16; break;
case 5123: attribute->type = U16; break;
case 5125: attribute->type = U32; break;
case 5126: attribute->type = F32; break;
default: break;
}
} else if (STR_EQ(key, "type")) {
gltfString type = NOM_STR(json, token);
if (STR_EQ(type, "SCALAR")) {
attribute->components = 1;
} else if (type.length == 4) {
attribute->components = type.data[3] - '0';
attribute->matrix = type.data[0] == 'M';
}
} else if (STR_EQ(key, "min") && token->size <= 4) {
int count = (token++)->size;
attribute->hasMin = true;
for (int j = 0; j < count; j++) {
attribute->min[j] = NOM_FLOAT(json, token);
}
} else if (STR_EQ(key, "max") && token->size <= 4) {
int count = (token++)->size;
attribute->hasMax = true;
for (int j = 0; j < count; j++) {
attribute->max[j] = NOM_FLOAT(json, token);
}
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Animations
if (info.animations) {
int channelIndex = 0;
int baseSampler = 0;
jsmntok_t* token = info.animations;
ModelAnimation* animation = model->animations;
for (int i = (token++)->size; i > 0; i--, animation++) {
int samplerCount = 0;
animation->name = NULL;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "channels")) {
animation->channelCount = (token++)->size;
animation->channels = channels + channelIndex;
channelIndex += animation->channelCount;
for (int j = 0; j < animation->channelCount; j++) {
ModelAnimationChannel* channel = &animation->channels[j];
ModelAttribute* times = NULL;
ModelAttribute* data = NULL;
for (int kk = (token++)->size; kk > 0; kk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "sampler")) {
gltfAnimationSampler* sampler = animationSamplers + baseSampler + NOM_INT(json, token);
times = &model->attributes[sampler->input];
data = &model->attributes[sampler->output];
channel->smoothing = sampler->smoothing;
channel->keyframeCount = times->count;
} else if (STR_EQ(key, "target")) {
for (int kkk = (token++)->size; kkk > 0; kkk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "node")) { channel->nodeIndex = NOM_INT(json, token); }
else if (STR_EQ(key, "path")) {
gltfString property = NOM_STR(json, token);
if (STR_EQ(property, "translation")) { channel->property = PROP_TRANSLATION; }
else if (STR_EQ(property, "rotation")) { channel->property = PROP_ROTATION; }
else if (STR_EQ(property, "scale")) { channel->property = PROP_SCALE; }
else { lovrThrow("Unknown animation channel property"); }
} else {
token += NOM_VALUE(json, token);
}
}
} else {
token += NOM_VALUE(json, token);
}
}
lovrAssert(times, "Missing keyframe times");
lovrAssert(data, "Missing keyframe data");
ModelBuffer* buffer;
buffer = &model->buffers[times->buffer];
lovrAssert(times->type == F32 && (buffer->stride == 0 || buffer->stride == sizeof(float)), "Keyframe times must be tightly-packed floats");
channel->times = (float*) (buffer->data + times->offset);
buffer = &model->buffers[data->buffer];
uint8_t components = data->components;
lovrAssert(data->type == F32 && (buffer->stride == 0 || buffer->stride == sizeof(float) * components), "Keyframe data must be tightly-packed floats");
channel->data = (float*) (buffer->data + data->offset);
animation->duration = MAX(animation->duration, channel->times[channel->keyframeCount - 1]);
}
} else if (STR_EQ(key, "samplers")) {
samplerCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "name")) {
gltfString name = NOM_STR(json, token);
memcpy(chars, name.data, name.length);
chars[name.length] = '\0';
animation->name = chars;
chars += name.length;
} else {
token += NOM_VALUE(json, token);
}
}
baseSampler += samplerCount;
}
}
// Images
if (info.images) {
jsmntok_t* token = info.images;
TextureData** image = model->images;
for (int i = (token++)->size; i > 0; i--, image++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "bufferView")) {
ModelBuffer* buffer = &model->buffers[NOM_INT(json, token)];
Blob* blob = lovrBlobCreate(buffer->data, buffer->size, NULL);
*image = lovrTextureDataCreateFromBlob(blob, false);
blob->data = NULL; // FIXME
lovrRelease(blob);
} else if (STR_EQ(key, "uri")) {
size_t size = 0;
char filename[1024];
gltfString uri = NOM_STR(json, token);
lovrAssert(strncmp("data:", uri.data, strlen("data:")), "Base64 URIs aren't supported yet");;
snprintf(filename, 1024, "%s/%.*s%c", basePath, (int) uri.length, uri.data, 0);
void* data = io.read(filename, &size);
lovrAssert(data && size > 0, "Unable to read image from '%s'", filename);
Blob* blob = lovrBlobCreate(data, size, NULL);
*image = lovrTextureDataCreateFromBlob(blob, false);
lovrRelease(blob);
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Textures
if (info.textures) {
jsmntok_t* token = info.textures;
ModelTexture* texture = model->textures;
for (int i = (token++)->size; i > 0; i--, texture++) {
texture->filter.mode = FILTER_TRILINEAR;
texture->wrap.s = texture->wrap.t = WRAP_REPEAT;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "source")) {
texture->imageIndex = NOM_INT(json, token);
} else if (STR_EQ(key, "sampler")) {
gltfSampler* sampler = &samplers[NOM_INT(json, token)];
texture->filter = sampler->filter;
texture->wrap = sampler->wrap;
}
else { token += NOM_VALUE(json, token); }
}
}
}
// Materials
if (info.materials) {
jsmntok_t* token = info.materials;
ModelMaterial* material = model->materials;
for (int i = (token++)->size; i > 0; i--, material++) {
material->scalars[SCALAR_METALNESS] = 1.f;
material->scalars[SCALAR_ROUGHNESS] = 1.f;
material->colors[COLOR_DIFFUSE] = (Color) { 1.f, 1.f, 1.f, 1.f };
material->colors[COLOR_EMISSIVE] = (Color) { 1.f, 1.f, 1.f, 1.f };
for (int j = 0; j < MAX_MATERIAL_TEXTURES; j++) {
material->textures[j] = -1;
}
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "pbrMetallicRoughness")) {
for (int j = (token++)->size; j > 0; j--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "baseColorFactor")) {
token++; // Enter array
material->colors[COLOR_DIFFUSE].r = NOM_FLOAT(json, token);
material->colors[COLOR_DIFFUSE].g = NOM_FLOAT(json, token);
material->colors[COLOR_DIFFUSE].b = NOM_FLOAT(json, token);
material->colors[COLOR_DIFFUSE].a = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "baseColorTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_DIFFUSE]);
} else if (STR_EQ(key, "metallicFactor")) {
material->scalars[SCALAR_METALNESS] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "roughnessFactor")) {
material->scalars[SCALAR_ROUGHNESS] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "metallicRoughnessTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_METALNESS]);
material->textures[TEXTURE_ROUGHNESS] = material->textures[TEXTURE_METALNESS];
} else {
token += NOM_VALUE(json, token);
}
}
} else if (STR_EQ(key, "normalTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_NORMAL]);
} else if (STR_EQ(key, "occlusionTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_OCCLUSION]);
} else if (STR_EQ(key, "emissiveTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_EMISSIVE]);
} else if (STR_EQ(key, "emissiveFactor")) {
token++; // Enter array
material->colors[COLOR_EMISSIVE].r = NOM_FLOAT(json, token);
material->colors[COLOR_EMISSIVE].g = NOM_FLOAT(json, token);
material->colors[COLOR_EMISSIVE].b = NOM_FLOAT(json, token);
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Primitives
if (info.meshes) {
int primitiveIndex = 0;
jsmntok_t* token = info.meshes;
ModelPrimitive* primitive = model->primitives;
for (int i = (token++)->size; i > 0; i--) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "primitives")) {
for (uint32_t j = (token++)->size; j > 0; j--, primitive++) {
primitive->mode = DRAW_TRIANGLES;
primitive->material = -1;
for (int kk = (token++)->size; kk > 0; kk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "material")) {
primitive->material = NOM_INT(json, token);
} else if (STR_EQ(key, "indices")) {
primitive->indices = &model->attributes[NOM_INT(json, token)];
lovrAssert(primitive->indices->type != U8, "Unsigned byte indices are not supported (must be unsigned shorts or unsigned ints)");
} else if (STR_EQ(key, "mode")) {
switch (NOM_INT(json, token)) {
case 0: primitive->mode = DRAW_POINTS; break;
case 1: primitive->mode = DRAW_LINES; break;
case 2: primitive->mode = DRAW_LINE_LOOP; break;
case 3: primitive->mode = DRAW_LINE_STRIP; break;
case 4: primitive->mode = DRAW_TRIANGLES; break;
case 5: primitive->mode = DRAW_TRIANGLE_STRIP; break;
case 6: primitive->mode = DRAW_TRIANGLE_FAN; break;
default: lovrThrow("Unknown primitive mode");
}
} else if (STR_EQ(key, "attributes")) {
int attributeCount = (token++)->size;
for (int a = 0; a < attributeCount; a++) {
DefaultAttribute attributeType = -1;
gltfString name = NOM_STR(json, token);
int attributeIndex = NOM_INT(json, token);
if (STR_EQ(name, "POSITION")) { attributeType = ATTR_POSITION; }
else if (STR_EQ(name, "NORMAL")) { attributeType = ATTR_NORMAL; }
else if (STR_EQ(name, "TEXCOORD_0")) { attributeType = ATTR_TEXCOORD; }
else if (STR_EQ(name, "COLOR_0")) { attributeType = ATTR_COLOR; }
else if (STR_EQ(name, "TANGENT")) { attributeType = ATTR_TANGENT; }
else if (STR_EQ(name, "JOINTS_0")) { attributeType = ATTR_BONES; }
else if (STR_EQ(name, "WEIGHTS_0")) { attributeType = ATTR_WEIGHTS; }
if (attributeType >= 0) {
primitive->attributes[attributeType] = &model->attributes[attributeIndex];
}
}
} else {
token += NOM_VALUE(json, token);
}
}
}
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Nodes
if (info.nodes) {
jsmntok_t* token = info.nodes;
ModelNode* node = model->nodes;
for (int i = (token++)->size; i > 0; i--, node++) {
float translation[3] = { 0, 0, 0 };
float rotation[4] = { 0, 0, 0, 0 };
float scale[3] = { 1, 1, 1 };
bool matrix = false;
node->primitiveCount = 0;
node->skin = -1;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "mesh")) {
gltfMesh* mesh = &meshes[NOM_INT(json, token)];
node->primitiveIndex = mesh->primitiveIndex;
node->primitiveCount = mesh->primitiveCount;
} else if (STR_EQ(key, "skin")) {
node->skin = NOM_INT(json, token);
} else if (STR_EQ(key, "children")) {
node->children = &nodeChildren[childIndex];
node->childCount = (token++)->size;
for (uint32_t j = 0; j < node->childCount; j++) {
nodeChildren[childIndex++] = NOM_INT(json, token);
}
} else if (STR_EQ(key, "matrix")) {
lovrAssert((token++)->size == 16, "Node matrix needs 16 elements");
matrix = true;
for (int j = 0; j < 16; j++) {
node->transform[j] = NOM_FLOAT(json, token);
}
} else if (STR_EQ(key, "translation")) {
lovrAssert((token++)->size == 3, "Node translation needs 3 elements");
translation[0] = NOM_FLOAT(json, token);
translation[1] = NOM_FLOAT(json, token);
translation[2] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "rotation")) {
lovrAssert((token++)->size == 4, "Node rotation needs 4 elements");
rotation[0] = NOM_FLOAT(json, token);
rotation[1] = NOM_FLOAT(json, token);
rotation[2] = NOM_FLOAT(json, token);
rotation[3] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "scale")) {
lovrAssert((token++)->size == 3, "Node scale needs 3 elements");
scale[0] = NOM_FLOAT(json, token);
scale[1] = NOM_FLOAT(json, token);
scale[2] = NOM_FLOAT(json, token);
} else {
token += NOM_VALUE(json, token);
}
}
// Fix it in post
if (!matrix) {
mat4_identity(node->transform);
mat4_translate(node->transform, translation[0], translation[1], translation[2]);
mat4_rotateQuat(node->transform, rotation);
mat4_scale(node->transform, scale[0], scale[1], scale[2]);
}
}
}
// Skins
if (info.skins) {
int jointIndex = 0;
jsmntok_t* token = info.skins;
ModelSkin* skin = model->skins;
for (int i = (token++)->size; i > 0; i--, skin++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "inverseBindMatrices")) {
ModelAttribute* attribute = &model->attributes[NOM_INT(json, token)];
ModelBuffer* buffer = &model->buffers[attribute->buffer];
skin->inverseBindMatrices = (float*) ((uint8_t*) buffer->data + attribute->offset);
} else if (STR_EQ(key, "skeleton")) {
skin->skeleton = NOM_INT(json, token);
} else if (STR_EQ(key, "joints")) {
skin->joints = &skinJoints[jointIndex];
skin->jointCount = (token++)->size;
for (uint32_t j = 0; j < skin->jointCount; j++) {
skinJoints[jointIndex++] = NOM_INT(json, token);
}
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Scenes
if (info.sceneCount == 0) {
model->rootNode = 0;
} else if (scenes[rootScene].nodeCount > 1) {
model->rootNode = model->nodeCount - 1;
ModelNode* lastNode = &model->nodes[model->rootNode];
lastNode->childCount = scenes[rootScene].nodeCount;
lastNode->children = &nodeChildren[childIndex];
mat4_identity(lastNode->transform);
lastNode->primitiveCount = 0;
lastNode->skin = -1;
jsmntok_t* token = info.scenes;
int sceneCount = (token++)->size;
for (int i = 0; i < sceneCount; i++) {
if (i == rootScene) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "nodes")) {
for (int j = (token++)->size; j > 0; j--) {
lastNode->children[lastNode->childCount - j] = NOM_INT(json, token);
}
} else {
token += NOM_VALUE(json, token);
}
}
} else {
token += NOM_VALUE(json, token);
}
}
} else {
model->rootNode = scenes[rootScene].node;
}
free(animationSamplers);
free(meshes);
free(samplers);
free(scenes);
free(tokens);
return model;
lovrThrow("Unable to load model from '%s'", source->name);
return NULL;
}
void lovrModelDataDestroy(void* ref) {
@ -873,3 +21,41 @@ void lovrModelDataDestroy(void* ref) {
}
free(model->data);
}
// Note: this code is a scary optimization
void lovrModelDataAllocate(ModelData* model) {
size_t totalSize = 0;
size_t sizes[14];
totalSize += sizes[0] = model->blobCount * sizeof(Blob*);
totalSize += sizes[1] = model->imageCount * sizeof(TextureData*);
totalSize += sizes[2] = model->animationCount * sizeof(ModelAnimation);
totalSize += sizes[3] = model->attributeCount * sizeof(ModelAttribute);
totalSize += sizes[4] = model->bufferCount * sizeof(ModelBuffer);
totalSize += sizes[5] = model->textureCount * sizeof(ModelTexture);
totalSize += sizes[6] = model->materialCount * sizeof(ModelMaterial);
totalSize += sizes[7] = model->primitiveCount * sizeof(ModelPrimitive);
totalSize += sizes[8] = model->nodeCount * sizeof(ModelNode);
totalSize += sizes[9] = model->skinCount * sizeof(ModelSkin);
totalSize += sizes[10] = model->channelCount * sizeof(ModelAnimationChannel);
totalSize += sizes[11] = model->childCount * sizeof(uint32_t);
totalSize += sizes[12] = model->jointCount * sizeof(uint32_t);
totalSize += sizes[13] = model->charCount * sizeof(char);
size_t offset = 0;
char* p = model->data = calloc(1, totalSize);
lovrAssert(model->data, "Out of memory");
model->blobs = (Blob**) (p + offset), offset += sizes[0];
model->images = (TextureData**) (p + offset), offset += sizes[1];
model->animations = (ModelAnimation*) (p + offset), offset += sizes[2];
model->attributes = (ModelAttribute*) (p + offset), offset += sizes[3];
model->buffers = (ModelBuffer*) (p + offset), offset += sizes[4];
model->textures = (ModelTexture*) (p + offset), offset += sizes[5];
model->materials = (ModelMaterial*) (p + offset), offset += sizes[6];
model->primitives = (ModelPrimitive*) (p + offset), offset += sizes[7];
model->nodes = (ModelNode*) (p + offset), offset += sizes[8];
model->skins = (ModelSkin*) (p + offset), offset += sizes[9];
model->channels = (ModelAnimationChannel*) (p + offset), offset += sizes[10];
model->children = (uint32_t*) (p + offset), offset += sizes[11];
model->joints = (uint32_t*) (p + offset), offset += sizes[12];
model->chars = (char*) (p + offset), offset += sizes[13];
}

19
src/data/modelData.h
View File

@ -97,8 +97,8 @@ typedef struct {
} ModelBuffer;
typedef struct {
uint32_t buffer;
size_t offset;
uint32_t buffer;
uint32_t count;
AttributeType type;
unsigned int components : 3;
@ -139,9 +139,9 @@ typedef struct {
} ModelMaterial;
typedef struct {
DrawMode mode;
ModelAttribute* attributes[MAX_DEFAULT_ATTRIBUTES];
ModelAttribute* indices;
DrawMode mode;
int material;
} ModelPrimitive;
@ -157,13 +157,12 @@ typedef struct {
typedef struct {
uint32_t* joints;
uint32_t jointCount;
int skeleton;
float* inverseBindMatrices;
} ModelSkin;
typedef struct {
Ref ref;
uint8_t* data;
void* data;
Blob** blobs;
TextureData** images;
ModelAnimation* animations;
@ -185,6 +184,15 @@ typedef struct {
int nodeCount;
int skinCount;
int rootNode;
ModelAnimationChannel* channels;
uint32_t* children;
uint32_t* joints;
char* chars;
int channelCount;
int childCount;
int jointCount;
int charCount;
} ModelData;
typedef struct {
@ -192,5 +200,8 @@ typedef struct {
} ModelDataIO;
ModelData* lovrModelDataInit(ModelData* model, Blob* blob, ModelDataIO io);
ModelData* lovrModelDataInitGltf(ModelData* model, Blob* blob, ModelDataIO io);
ModelData* lovrModelDataInitObj(ModelData* model, Blob* blob, ModelDataIO io);
#define lovrModelDataCreate(...) lovrModelDataInit(lovrAlloc(ModelData), __VA_ARGS__)
void lovrModelDataDestroy(void* ref);
void lovrModelDataAllocate(ModelData* model);

858
src/data/modelData_gltf.c Normal file
View File

@ -0,0 +1,858 @@
#include "data/modelData.h"
#include "lib/math.h"
#include "lib/jsmn/jsmn.h"
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#define MAX_STACK_TOKENS 1024
#define MAGIC_glTF 0x46546c67
#define MAGIC_JSON 0x4e4f534a
#define MAGIC_BIN 0x004e4942
#define STR_EQ(k, s) !strncmp(k.data, s, k.length)
#define NOM_VALUE(j, t) nomValue(j, t, 1, 0)
#define NOM_INT(j, t) nomInt(j + (t++)->start)
#define NOM_STR(j, t) (gltfString) { (char* )j + t->start, t->end - t->start }; t++
#define NOM_BOOL(j, t) (*(j + (t++)->start) == 't')
#define NOM_FLOAT(j, t) atof(j + (t++)->start)
typedef struct {
char* data;
size_t length;
} gltfString;
typedef struct {
uint32_t magic;
uint32_t version;
uint32_t length;
} gltfHeader;
typedef struct {
uint32_t length;
uint32_t type;
} gltfChunkHeader;
typedef struct {
int input;
int output;
SmoothMode smoothing;
} gltfAnimationSampler;
typedef struct {
uint32_t primitiveIndex;
uint32_t primitiveCount;
} gltfMesh;
typedef struct {
TextureFilter filter;
TextureWrap wrap;
} gltfSampler;
typedef struct {
uint32_t node;
uint32_t nodeCount;
} gltfScene;
static int nomInt(const char* s) {
int n = 0;
bool negative = (*s == '-');
s += negative;
while (isdigit(*s)) { n = 10 * n + (*s++ - '0'); }
return negative ? -n : n;
}
static int nomValue(const char* data, jsmntok_t* token, int count, int sum) {
if (count == 0) { return sum; }
switch (token->type) {
case JSMN_OBJECT: return nomValue(data, token + 1, count - 1 + 2 * token->size, sum + 1);
case JSMN_ARRAY: return nomValue(data, token + 1, count - 1 + token->size, sum + 1);
default: return nomValue(data, token + 1, count - 1, sum + 1);
}
}
// Kinda like total += sum(map(arr, obj => #obj[key]))
static jsmntok_t* aggregate(const char* json, jsmntok_t* token, const char* target, int* total) {
for (int i = (token++)->size; i > 0; i--) {
if (token->size > 0) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, target)) {
*total += token->size;
}
token += NOM_VALUE(json, token);
}
}
}
return token;
}
static jsmntok_t* parseTextureInfo(const char* json, jsmntok_t* token, int* dest) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "index")) {
*dest = NOM_INT(json, token);
} else if (STR_EQ(key, "texCoord")) {
lovrAssert(NOM_INT(json, token) == 0, "Only one set of texture coordinates is supported");
} else {
token += NOM_VALUE(json, token);
}
}
return token;
}
ModelData* lovrModelDataInitGltf(ModelData* model, Blob* source, ModelDataIO io) {
uint8_t* data = source->data;
gltfHeader* header = (gltfHeader*) data;
bool glb = header->magic == MAGIC_glTF;
const char *json, *binData;
size_t jsonLength, binLength;
ptrdiff_t binOffset;
char basePath[1024];
strncpy(basePath, source->name, 1023);
char* slash = strrchr(basePath, '/');
if (slash) *slash = 0;
if (glb) {
gltfChunkHeader* jsonHeader = (gltfChunkHeader*) &header[1];
lovrAssert(jsonHeader->type == MAGIC_JSON, "Invalid JSON header");
json = (char*) &jsonHeader[1];
jsonLength = jsonHeader->length;
gltfChunkHeader* binHeader = (gltfChunkHeader*) &json[jsonLength];
lovrAssert(binHeader->type == MAGIC_BIN, "Invalid BIN header");
binData = (char*) &binHeader[1];
binLength = binHeader->length;
binOffset = (char*) binData - (char*) source->data;
} else {
json = (char*) data;
jsonLength = source->size;
binData = NULL;
binLength = 0;
binOffset = 0;
}
// Parse JSON
jsmn_parser parser;
jsmn_init(&parser);
jsmntok_t stackTokens[MAX_STACK_TOKENS];
jsmntok_t* heapTokens = NULL;
jsmntok_t* tokens = &stackTokens[0];
int tokenCount = 0;
if ((tokenCount = jsmn_parse(&parser, json, jsonLength, stackTokens, MAX_STACK_TOKENS)) == JSMN_ERROR_NOMEM) {
size_t capacity = MAX_STACK_TOKENS;
do {
capacity *= 2;
lovrAssert(heapTokens = realloc(heapTokens, capacity), "Out of memory");
tokenCount = jsmn_parse(&parser, json, jsonLength, heapTokens, capacity);
} while (tokenCount == JSMN_ERROR_NOMEM);
tokens = heapTokens;
}
if (tokenCount <= 0 || tokens[0].type != JSMN_OBJECT) {
free(heapTokens);
return NULL;
}
// Prepass: Basically we iterate over the tokens once and figure out how much memory we need and
// record the locations of tokens that we'll use later to fill in the memory once it's allocated.
struct {
jsmntok_t* animations;
jsmntok_t* attributes;
jsmntok_t* buffers;
jsmntok_t* bufferViews;
jsmntok_t* images;
jsmntok_t* textures;
jsmntok_t* materials;
jsmntok_t* meshes;
jsmntok_t* nodes;
jsmntok_t* scenes;
jsmntok_t* skins;
int sceneCount;
} info = { 0 };
gltfAnimationSampler* animationSamplers = NULL;
gltfMesh* meshes = NULL;
gltfSampler* samplers = NULL;
gltfScene* scenes = NULL;
int rootScene = 0;
for (jsmntok_t* token = tokens + 1; token < tokens + tokenCount;) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "accessors")) {
info.attributes = token;
model->attributeCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "animations")){
info.animations = token;
model->animationCount = token->size;
size_t samplerCount = 0;
jsmntok_t* t = token;
for (int i = (t++)->size; i > 0; i--) {
if (t->size > 0) {
for (int k = (t++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, t);
if (STR_EQ(key, "channels")) { model->channelCount += t->size; }
else if (STR_EQ(key, "samplers")) { samplerCount += t->size; }
else if (STR_EQ(key, "name")) { model->charCount += t->end - t->start + 1; }
t += NOM_VALUE(json, t);
}
}
}
animationSamplers = malloc(samplerCount * sizeof(gltfAnimationSampler));
lovrAssert(animationSamplers, "Out of memory");
gltfAnimationSampler* sampler = animationSamplers;
for (int i = (token++)->size; i > 0; i--) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "samplers")) {
for (int j = (token++)->size; j > 0; j--, sampler++) {
sampler->input = -1;
sampler->output = -1;
sampler->smoothing = SMOOTH_LINEAR;
for (int kk = (token++)->size; kk > 0; kk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "input")) { sampler->input = NOM_INT(json, token); }
else if (STR_EQ(key, "output")) { sampler->output = NOM_INT(json, token); }
else if (STR_EQ(key, "interpolation")) {
gltfString smoothing = NOM_STR(json, token);
if (STR_EQ(smoothing, "LINEAR")) { sampler->smoothing = SMOOTH_LINEAR; }
else if (STR_EQ(smoothing, "STEP")) { sampler->smoothing = SMOOTH_STEP; }
else if (STR_EQ(smoothing, "CUBICSPLINE")) { sampler->smoothing = SMOOTH_CUBIC; }
else { lovrThrow("Unknown animation sampler interpolation"); }
} else {
token += NOM_VALUE(json, token);
}
}
}
} else {
token += NOM_VALUE(json, token);
}
}
}
} else if (STR_EQ(key, "buffers")) {
info.buffers = token;
model->blobCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "bufferViews")) {
info.bufferViews = token;
model->bufferCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "images")) {
info.images = token;
model->imageCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "samplers")) {
samplers = malloc(token->size * sizeof(gltfSampler));
lovrAssert(samplers, "Out of memory");
gltfSampler* sampler = samplers;
for (int i = (token++)->size; i > 0; i--, sampler++) {
sampler->filter.mode = FILTER_TRILINEAR;
sampler->wrap.s = sampler->wrap.t = sampler->wrap.r = WRAP_REPEAT;
int min = -1;
int mag = -1;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "minFilter")) { min = NOM_INT(json, token); }
else if (STR_EQ(key, "magFilter")) { mag = NOM_INT(json, token); }
else if (STR_EQ(key, "wrapS")) {
switch (NOM_INT(json, token)) {
case 33071: sampler->wrap.s = WRAP_CLAMP; break;
case 33648: sampler->wrap.s = WRAP_MIRRORED_REPEAT; break;
case 10497: sampler->wrap.s = WRAP_REPEAT; break;
default: lovrThrow("Unknown sampler wrapS mode for sampler %d", i);
}
} else if (STR_EQ(key, "wrapT")) {
switch (NOM_INT(json, token)) {
case 33071: sampler->wrap.t = WRAP_CLAMP; break;
case 33648: sampler->wrap.t = WRAP_MIRRORED_REPEAT; break;
case 10497: sampler->wrap.t = WRAP_REPEAT; break;
default: lovrThrow("Unknown sampler wrapT mode for sampler %d", i);
}
} else {
token += NOM_VALUE(json, token);
}
}
if (min == 9728 || min == 9984 || min == 9986 || mag == 9728) {
sampler->filter.mode = FILTER_NEAREST;
} else {
switch (min) {
case 9729: sampler->filter.mode = FILTER_BILINEAR; break;
case 9985: sampler->filter.mode = FILTER_BILINEAR; break;
case 9987: sampler->filter.mode = FILTER_TRILINEAR; break;
}
}
}
} else if (STR_EQ(key, "textures")) {
info.textures = token;
model->textureCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "materials")) {
info.materials = token;
model->materialCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "meshes")) {
info.meshes = token;
meshes = malloc(token->size * sizeof(gltfMesh));
lovrAssert(meshes, "Out of memory");
gltfMesh* mesh = meshes;
model->primitiveCount = 0;
for (int i = (token++)->size; i > 0; i--, mesh++) {
mesh->primitiveCount = 0;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "primitives")) {
mesh->primitiveIndex = model->primitiveCount;
mesh->primitiveCount += token->size;
model->primitiveCount += token->size;
}
token += NOM_VALUE(json, token);
}
}
} else if (STR_EQ(key, "nodes")) {
info.nodes = token;
model->nodeCount = token->size;
token = aggregate(json, token, "children", &model->childCount);
} else if (STR_EQ(key, "scene")) {
rootScene = NOM_INT(json, token);
} else if (STR_EQ(key, "scenes")) {
info.scenes = token;
info.sceneCount = token->size;
scenes = malloc(info.sceneCount * sizeof(gltfScene));
lovrAssert(scenes, "Out of memory");
gltfScene* scene = scenes;
for (int i = (token++)->size; i > 0; i--, scene++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "nodes")) {
scene->nodeCount = token->size;
jsmntok_t* t = token + 1;
scene->node = NOM_INT(json, t);
}
token += NOM_VALUE(json, token);
}
}
} else if (STR_EQ(key, "skins")) {
info.skins = token;
model->skinCount = token->size;
token = aggregate(json, token, "joints", &model->jointCount);
} else {
token += NOM_VALUE(json, token);
}
}
// We only support a single root node, so if there is more than one root node in the scene then
// we create a fake "super root" node and add all the scene's root nodes as its children.
if (info.sceneCount > 0 && scenes[rootScene].nodeCount > 1) {
model->childCount += model->nodeCount;
model->nodeCount++;
}
// Allocate memory, then revisit all of the tokens that were recorded during the prepass and write
// their data into this memory.
lovrModelDataAllocate(model);
// Blobs
if (model->blobCount > 0) {
jsmntok_t* token = info.buffers;
Blob** blob = model->blobs;
for (int i = (token++)->size; i > 0; i--, blob++) {
gltfString uri = { 0 };
size_t size = 0;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "byteLength")) { size = NOM_INT(json, token); }
else if (STR_EQ(key, "uri")) { uri = NOM_STR(json, token); }
else { token += NOM_VALUE(json, token); }
}
if (uri.data) {
lovrAssert(strncmp("data:", uri.data, strlen("data:")), "Base64 URIs aren't supported yet");;
size_t bytesRead;
char filename[1024];
lovrAssert(uri.length < 1024, "Buffer filename is too long");
snprintf(filename, 1023, "%s/%.*s", basePath, (int) uri.length, uri.data);
*blob = lovrBlobCreate(io.read(filename, &bytesRead), size, NULL);
lovrAssert((*blob)->data && bytesRead == size, "Unable to read %s", filename);
} else {
lovrAssert(glb, "Buffer is missing URI");
lovrRetain(source);
*blob = source;
}
}
}
// Buffers
if (model->bufferCount > 0) {
jsmntok_t* token = info.bufferViews;
ModelBuffer* buffer = model->buffers;
for (int i = (token++)->size; i > 0; i--, buffer++) {
size_t offset = 0;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "buffer")) { buffer->data = model->blobs[NOM_INT(json, token)]->data; }
else if (STR_EQ(key, "byteOffset")) { offset = NOM_INT(json, token); }
else if (STR_EQ(key, "byteLength")) { buffer->size = NOM_INT(json, token); }
else if (STR_EQ(key, "byteStride")) { buffer->stride = NOM_INT(json, token); }
else { token += NOM_VALUE(json, token); }
}
// If this is the glb binary data, increment the offset to account for the file header
if (buffer->data && buffer->data == source->data && glb) {
offset += binOffset;
}
buffer->data = (char*) buffer->data + offset;
}
}
// Attributes
if (model->attributeCount > 0) {
jsmntok_t* token = info.attributes;
ModelAttribute* attribute = model->attributes;
for (int i = (token++)->size; i > 0; i--, attribute++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "bufferView")) { attribute->buffer = NOM_INT(json, token); }
else if (STR_EQ(key, "count")) { attribute->count = NOM_INT(json, token); }
else if (STR_EQ(key, "byteOffset")) { attribute->offset = NOM_INT(json, token); }
else if (STR_EQ(key, "normalized")) { attribute->normalized = NOM_BOOL(json, token); }
else if (STR_EQ(key, "componentType")) {
switch (NOM_INT(json, token)) {
case 5120: attribute->type = I8; break;
case 5121: attribute->type = U8; break;
case 5122: attribute->type = I16; break;
case 5123: attribute->type = U16; break;
case 5125: attribute->type = U32; break;
case 5126: attribute->type = F32; break;
default: break;
}
} else if (STR_EQ(key, "type")) {
gltfString type = NOM_STR(json, token);
if (STR_EQ(type, "SCALAR")) {
attribute->components = 1;
} else if (type.length == 4) {
attribute->components = type.data[3] - '0';
attribute->matrix = type.data[0] == 'M';
}
} else if (STR_EQ(key, "min") && token->size <= 4) {
int count = (token++)->size;
attribute->hasMin = true;
for (int j = 0; j < count; j++) {
attribute->min[j] = NOM_FLOAT(json, token);
}
} else if (STR_EQ(key, "max") && token->size <= 4) {
int count = (token++)->size;
attribute->hasMax = true;
for (int j = 0; j < count; j++) {
attribute->max[j] = NOM_FLOAT(json, token);
}
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Animations
if (model->animationCount > 0) {
int channelIndex = 0;
int baseSampler = 0;
jsmntok_t* token = info.animations;
ModelAnimation* animation = model->animations;
for (int i = (token++)->size; i > 0; i--, animation++) {
int samplerCount = 0;
animation->name = NULL;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "channels")) {
animation->channelCount = (token++)->size;
animation->channels = model->channels + channelIndex;
channelIndex += animation->channelCount;
for (int j = 0; j < animation->channelCount; j++) {
ModelAnimationChannel* channel = &animation->channels[j];
ModelAttribute* times = NULL;
ModelAttribute* data = NULL;
for (int kk = (token++)->size; kk > 0; kk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "sampler")) {
gltfAnimationSampler* sampler = animationSamplers + baseSampler + NOM_INT(json, token);
times = &model->attributes[sampler->input];
data = &model->attributes[sampler->output];
channel->smoothing = sampler->smoothing;
channel->keyframeCount = times->count;
} else if (STR_EQ(key, "target")) {
for (int kkk = (token++)->size; kkk > 0; kkk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "node")) { channel->nodeIndex = NOM_INT(json, token); }
else if (STR_EQ(key, "path")) {
gltfString property = NOM_STR(json, token);
if (STR_EQ(property, "translation")) { channel->property = PROP_TRANSLATION; }
else if (STR_EQ(property, "rotation")) { channel->property = PROP_ROTATION; }
else if (STR_EQ(property, "scale")) { channel->property = PROP_SCALE; }
else { lovrThrow("Unknown animation channel property"); }
} else {
token += NOM_VALUE(json, token);
}
}
} else {
token += NOM_VALUE(json, token);
}
}
lovrAssert(times, "Missing keyframe times");
lovrAssert(data, "Missing keyframe data");
ModelBuffer* buffer;
buffer = &model->buffers[times->buffer];
lovrAssert(times->type == F32 && (buffer->stride == 0 || buffer->stride == sizeof(float)), "Keyframe times must be tightly-packed floats");
channel->times = (float*) (buffer->data + times->offset);
buffer = &model->buffers[data->buffer];
uint8_t components = data->components;
lovrAssert(data->type == F32 && (buffer->stride == 0 || buffer->stride == sizeof(float) * components), "Keyframe data must be tightly-packed floats");
channel->data = (float*) (buffer->data + data->offset);
animation->duration = MAX(animation->duration, channel->times[channel->keyframeCount - 1]);
}
} else if (STR_EQ(key, "samplers")) {
samplerCount = token->size;
token += NOM_VALUE(json, token);
} else if (STR_EQ(key, "name")) {
gltfString name = NOM_STR(json, token);
memcpy(model->chars, name.data, name.length);
model->chars[name.length] = '\0';
animation->name = model->chars;
model->chars += name.length;
} else {
token += NOM_VALUE(json, token);
}
}
baseSampler += samplerCount;
}
}
// Images
if (model->imageCount > 0) {
jsmntok_t* token = info.images;
TextureData** image = model->images;
for (int i = (token++)->size; i > 0; i--, image++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "bufferView")) {
ModelBuffer* buffer = &model->buffers[NOM_INT(json, token)];
Blob* blob = lovrBlobCreate(buffer->data, buffer->size, NULL);
*image = lovrTextureDataCreateFromBlob(blob, false);
blob->data = NULL; // FIXME
lovrRelease(blob);
} else if (STR_EQ(key, "uri")) {
size_t size = 0;
char filename[1024];
gltfString uri = NOM_STR(json, token);
lovrAssert(strncmp("data:", uri.data, strlen("data:")), "Base64 URIs aren't supported yet");
snprintf(filename, 1024, "%s/%.*s%c", basePath, (int) uri.length, uri.data, 0);
void* data = io.read(filename, &size);
lovrAssert(data && size > 0, "Unable to read image from '%s'", filename);
Blob* blob = lovrBlobCreate(data, size, NULL);
*image = lovrTextureDataCreateFromBlob(blob, false);
lovrRelease(blob);
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Textures
if (model->textureCount > 0) {
jsmntok_t* token = info.textures;
ModelTexture* texture = model->textures;
for (int i = (token++)->size; i > 0; i--, texture++) {
texture->filter.mode = FILTER_TRILINEAR;
texture->wrap.s = texture->wrap.t = WRAP_REPEAT;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "source")) {
texture->imageIndex = NOM_INT(json, token);
} else if (STR_EQ(key, "sampler")) {
gltfSampler* sampler = &samplers[NOM_INT(json, token)];
texture->filter = sampler->filter;
texture->wrap = sampler->wrap;
}
else { token += NOM_VALUE(json, token); }
}
}
}
// Materials
if (model->materialCount > 0) {
jsmntok_t* token = info.materials;
ModelMaterial* material = model->materials;
for (int i = (token++)->size; i > 0; i--, material++) {
material->scalars[SCALAR_METALNESS] = 1.f;
material->scalars[SCALAR_ROUGHNESS] = 1.f;
material->colors[COLOR_DIFFUSE] = (Color) { 1.f, 1.f, 1.f, 1.f };
material->colors[COLOR_EMISSIVE] = (Color) { 0.f, 0.f, 0.f, 0.f };
memset(material->textures, 0xff, MAX_MATERIAL_TEXTURES * sizeof(int));
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "pbrMetallicRoughness")) {
for (int j = (token++)->size; j > 0; j--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "baseColorFactor")) {
token++; // Enter array
material->colors[COLOR_DIFFUSE].r = NOM_FLOAT(json, token);
material->colors[COLOR_DIFFUSE].g = NOM_FLOAT(json, token);
material->colors[COLOR_DIFFUSE].b = NOM_FLOAT(json, token);
material->colors[COLOR_DIFFUSE].a = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "baseColorTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_DIFFUSE]);
} else if (STR_EQ(key, "metallicFactor")) {
material->scalars[SCALAR_METALNESS] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "roughnessFactor")) {
material->scalars[SCALAR_ROUGHNESS] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "metallicRoughnessTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_METALNESS]);
material->textures[TEXTURE_ROUGHNESS] = material->textures[TEXTURE_METALNESS];
} else {
token += NOM_VALUE(json, token);
}
}
} else if (STR_EQ(key, "normalTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_NORMAL]);
} else if (STR_EQ(key, "occlusionTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_OCCLUSION]);
} else if (STR_EQ(key, "emissiveTexture")) {
token = parseTextureInfo(json, token, &material->textures[TEXTURE_EMISSIVE]);
} else if (STR_EQ(key, "emissiveFactor")) {
token++; // Enter array
material->colors[COLOR_EMISSIVE].r = NOM_FLOAT(json, token);
material->colors[COLOR_EMISSIVE].g = NOM_FLOAT(json, token);
material->colors[COLOR_EMISSIVE].b = NOM_FLOAT(json, token);
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Primitives
if (model->primitiveCount > 0) {
int primitiveIndex = 0;
jsmntok_t* token = info.meshes;
ModelPrimitive* primitive = model->primitives;
for (int i = (token++)->size; i > 0; i--) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "primitives")) {
for (uint32_t j = (token++)->size; j > 0; j--, primitive++) {
primitive->mode = DRAW_TRIANGLES;
primitive->material = -1;
for (int kk = (token++)->size; kk > 0; kk--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "material")) {
primitive->material = NOM_INT(json, token);
} else if (STR_EQ(key, "indices")) {
primitive->indices = &model->attributes[NOM_INT(json, token)];
lovrAssert(primitive->indices->type != U8, "Unsigned byte indices are not supported (must be unsigned shorts or unsigned ints)");
} else if (STR_EQ(key, "mode")) {
switch (NOM_INT(json, token)) {
case 0: primitive->mode = DRAW_POINTS; break;
case 1: primitive->mode = DRAW_LINES; break;
case 2: primitive->mode = DRAW_LINE_LOOP; break;
case 3: primitive->mode = DRAW_LINE_STRIP; break;
case 4: primitive->mode = DRAW_TRIANGLES; break;
case 5: primitive->mode = DRAW_TRIANGLE_STRIP; break;
case 6: primitive->mode = DRAW_TRIANGLE_FAN; break;
default: lovrThrow("Unknown primitive mode");
}
} else if (STR_EQ(key, "attributes")) {
int attributeCount = (token++)->size;
for (int a = 0; a < attributeCount; a++) {
DefaultAttribute attributeType = -1;
gltfString name = NOM_STR(json, token);
int attributeIndex = NOM_INT(json, token);
if (STR_EQ(name, "POSITION")) { attributeType = ATTR_POSITION; }
else if (STR_EQ(name, "NORMAL")) { attributeType = ATTR_NORMAL; }
else if (STR_EQ(name, "TEXCOORD_0")) { attributeType = ATTR_TEXCOORD; }
else if (STR_EQ(name, "COLOR_0")) { attributeType = ATTR_COLOR; }
else if (STR_EQ(name, "TANGENT")) { attributeType = ATTR_TANGENT; }
else if (STR_EQ(name, "JOINTS_0")) { attributeType = ATTR_BONES; }
else if (STR_EQ(name, "WEIGHTS_0")) { attributeType = ATTR_WEIGHTS; }
if (attributeType >= 0) {
primitive->attributes[attributeType] = &model->attributes[attributeIndex];
}
}
} else {
token += NOM_VALUE(json, token);
}
}
}
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Nodes
int childIndex = 0;
if (model->nodeCount > 0) {
jsmntok_t* token = info.nodes;
ModelNode* node = model->nodes;
for (int i = (token++)->size; i > 0; i--, node++) {
float translation[3] = { 0, 0, 0 };
float rotation[4] = { 0, 0, 0, 0 };
float scale[3] = { 1, 1, 1 };
bool matrix = false;
node->primitiveCount = 0;
node->skin = -1;
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "mesh")) {
gltfMesh* mesh = &meshes[NOM_INT(json, token)];
node->primitiveIndex = mesh->primitiveIndex;
node->primitiveCount = mesh->primitiveCount;
} else if (STR_EQ(key, "skin")) {
node->skin = NOM_INT(json, token);
} else if (STR_EQ(key, "children")) {
node->children = &model->children[childIndex];
node->childCount = (token++)->size;
for (uint32_t j = 0; j < node->childCount; j++) {
model->children[childIndex++] = NOM_INT(json, token);
}
} else if (STR_EQ(key, "matrix")) {
lovrAssert((token++)->size == 16, "Node matrix needs 16 elements");
matrix = true;
for (int j = 0; j < 16; j++) {
node->transform[j] = NOM_FLOAT(json, token);
}
} else if (STR_EQ(key, "translation")) {
lovrAssert((token++)->size == 3, "Node translation needs 3 elements");
translation[0] = NOM_FLOAT(json, token);
translation[1] = NOM_FLOAT(json, token);
translation[2] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "rotation")) {
lovrAssert((token++)->size == 4, "Node rotation needs 4 elements");
rotation[0] = NOM_FLOAT(json, token);
rotation[1] = NOM_FLOAT(json, token);
rotation[2] = NOM_FLOAT(json, token);
rotation[3] = NOM_FLOAT(json, token);
} else if (STR_EQ(key, "scale")) {
lovrAssert((token++)->size == 3, "Node scale needs 3 elements");
scale[0] = NOM_FLOAT(json, token);
scale[1] = NOM_FLOAT(json, token);
scale[2] = NOM_FLOAT(json, token);
} else {
token += NOM_VALUE(json, token);
}
}
// Fix it in post
if (!matrix) {
mat4_identity(node->transform);
mat4_translate(node->transform, translation[0], translation[1], translation[2]);
mat4_rotateQuat(node->transform, rotation);
mat4_scale(node->transform, scale[0], scale[1], scale[2]);
}
}
}
// Skins
if (model->skinCount > 0) {
int jointIndex = 0;
jsmntok_t* token = info.skins;
ModelSkin* skin = model->skins;
for (int i = (token++)->size; i > 0; i--, skin++) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "inverseBindMatrices")) {
ModelAttribute* attribute = &model->attributes[NOM_INT(json, token)];
ModelBuffer* buffer = &model->buffers[attribute->buffer];
skin->inverseBindMatrices = (float*) ((uint8_t*) buffer->data + attribute->offset);
} else if (STR_EQ(key, "joints")) {
skin->joints = &model->joints[jointIndex];
skin->jointCount = (token++)->size;
for (uint32_t j = 0; j < skin->jointCount; j++) {
model->joints[jointIndex++] = NOM_INT(json, token);
}
} else {
token += NOM_VALUE(json, token);
}
}
}
}
// Scenes
if (info.sceneCount == 0) {
model->rootNode = 0;
} else if (scenes[rootScene].nodeCount > 1) {
model->rootNode = model->nodeCount - 1;
ModelNode* lastNode = &model->nodes[model->rootNode];
lastNode->childCount = scenes[rootScene].nodeCount;
lastNode->children = &model->children[childIndex];
mat4_identity(lastNode->transform);
lastNode->primitiveCount = 0;
lastNode->skin = -1;
jsmntok_t* token = info.scenes;
int sceneCount = (token++)->size;
for (int i = 0; i < sceneCount; i++) {
if (i == rootScene) {
for (int k = (token++)->size; k > 0; k--) {
gltfString key = NOM_STR(json, token);
if (STR_EQ(key, "nodes")) {
for (int j = (token++)->size; j > 0; j--) {
lastNode->children[lastNode->childCount - j] = NOM_INT(json, token);
}
} else {
token += NOM_VALUE(json, token);
}
}
} else {
token += NOM_VALUE(json, token);
}
}
} else {
model->rootNode = scenes[rootScene].node;
}
free(animationSamplers);
free(meshes);
free(samplers);
free(scenes);
free(heapTokens);
return model;
}

165
src/data/modelData_obj.c Normal file
View File

@ -0,0 +1,165 @@
#include "data/modelData.h"
#include "lib/math.h"
#include <stdio.h>
#define STARTS_WITH(a, b) !strncmp(a, b, strlen(b))
ModelData* lovrModelDataInitObj(ModelData* model, Blob* source, ModelDataIO io) {
char* data = (char*) source->data;
size_t length = source->size;
vec_float_t vertexBuffer;
vec_int_t indexBuffer;
map_int_t vertexMap;
vec_float_t vertices;
vec_float_t normals;
vec_float_t uvs;
vec_init(&vertexBuffer);
vec_init(&indexBuffer);
map_init(&vertexMap);
vec_init(&vertices);
vec_init(&normals);
vec_init(&uvs);
while (length > 0) {
int lineLength = 0;
if (STARTS_WITH(data, "v ")) {
float x, y, z;
int count = sscanf(data + 2, "%f %f %f\n%n", &x, &y, &z, &lineLength);
lovrAssert(count == 3, "Bad OBJ: Expected 3 coordinates for vertex position");
vec_pusharr(&vertices, ((float[3]) { x, y, z }), 3);
} else if (STARTS_WITH(data, "vn ")) {
float x, y, z;
int count = sscanf(data + 3, "%f %f %f\n%n", &x, &y, &z, &lineLength);
lovrAssert(count == 3, "Bad OBJ: Expected 3 coordinates for vertex normal");
vec_pusharr(&normals, ((float[3]) { x, y, z }), 3);
} else if (STARTS_WITH(data, "vt ")) {
float u, v;
int count = sscanf(data + 3, "%f %f\n%n", &u, &v, &lineLength);
lovrAssert(count == 2, "Bad OBJ: Expected 2 coordinates for texture coordinate");
vec_pusharr(&uvs, ((float[2]) { u, v }), 2);
} else if (STARTS_WITH(data, "f ")) {
char* s = data + 2;
for (int i = 0; i < 3; i++) {
char terminator = i == 2 ? '\n' : ' ';
char* space = strchr(s, terminator);
if (space) {
*space = '\0'; // I'll be back
int* index = map_get(&vertexMap, s);
if (index) {
vec_push(&indexBuffer, *index);
} else {
int v, vt, vn;
int newIndex = vertexBuffer.length / 8;
vec_push(&indexBuffer, newIndex);
map_set(&vertexMap, s, newIndex);
// Can be improved
if (sscanf(s, "%d/%d/%d", &v, &vt, &vn) == 3) {
vec_pusharr(&vertexBuffer, vertices.data + 3 * (v - 1), 3);
vec_pusharr(&vertexBuffer, normals.data + 3 * (vn - 1), 3);
vec_pusharr(&vertexBuffer, uvs.data + 2 * (vt - 1), 2);
} else if (sscanf(s, "%d//%d", &v, &vn) == 2) {
vec_pusharr(&vertexBuffer, vertices.data + 3 * (v - 1), 3);
vec_pusharr(&vertexBuffer, normals.data + 3 * (vn - 1), 3);
vec_pusharr(&vertexBuffer, ((float[2]) { 0 }), 2);
} else if (sscanf(s, "%d", &v) == 1) {
vec_pusharr(&vertexBuffer, vertices.data + 3 * (v - 1), 3);
vec_pusharr(&vertexBuffer, ((float[5]) { 0 }), 5);
} else {
lovrThrow("Bad OBJ: Unknown face format");
}
}
*space = terminator;
s = space + 1;
}
}
lineLength = s - data;
} else {
char* newline = memchr(data, '\n', length);
lineLength = newline - data + 1;
}
data += lineLength;
length -= lineLength;
}
model->blobCount = 2;
model->bufferCount = 2;
model->attributeCount = 4;
model->primitiveCount = 1;
model->nodeCount = 1;
lovrModelDataAllocate(model);
model->blobs[0] = lovrBlobCreate(vertexBuffer.data, vertexBuffer.length * sizeof(float), "obj vertex data");
model->blobs[1] = lovrBlobCreate(indexBuffer.data, indexBuffer.length * sizeof(int), "obj index data");
model->buffers[0] = (ModelBuffer) {
.data = model->blobs[0]->data,
.size = model->blobs[0]->size,
.stride = 8 * sizeof(float)
};
model->buffers[1] = (ModelBuffer) {
.data = model->blobs[1]->data,
.size = model->blobs[1]->size,
.stride = sizeof(int)
};
model->attributes[0] = (ModelAttribute) {
.buffer = 0,
.offset = 0,
.count = vertexBuffer.length / 8,
.type = F32,
.components = 3
};
model->attributes[1] = (ModelAttribute) {
.buffer = 0,
.offset = 3 * sizeof(float),
.count = vertexBuffer.length / 8,
.type = F32,
.components = 3
};
model->attributes[2] = (ModelAttribute) {
.buffer = 0,
.offset = 6 * sizeof(float),
.count = vertexBuffer.length / 8,
.type = F32,
.components = 2
};
model->attributes[3] = (ModelAttribute) {
.buffer = 1,
.offset = 0,
.count = indexBuffer.length,
.type = U32,
.components = 1
};
model->primitives[0] = (ModelPrimitive) {
.mode = DRAW_TRIANGLES,
.attributes = {
[ATTR_POSITION] = &model->attributes[0],
[ATTR_NORMAL] = &model->attributes[1],
[ATTR_TEXCOORD] = &model->attributes[2]
},
.indices = &model->attributes[3],
.material = -1
};
model->nodes[0] = (ModelNode) {
.transform = MAT4_IDENTITY,
.primitiveIndex = 0,
.primitiveCount = 1
};
map_deinit(&vertexMap);
vec_deinit(&vertices);
vec_deinit(&normals);
vec_deinit(&uvs);
return model;
}

30
src/headset/openvr.c
View File

@ -403,9 +403,14 @@ static ModelData* openvrControllerNewModelData(Controller* controller) {
ModelData* model = lovrAlloc(ModelData);
size_t vertexSize = sizeof(RenderModel_Vertex_t);
// Buffers
model->bufferCount = 2;
model->buffers = calloc(model->bufferCount, sizeof(ModelBuffer));
model->attributeCount = 4;
model->imageCount = 1;
model->textureCount = 1;
model->materialCount = 1;
model->primitiveCount = 1;
model->nodeCount = 1;
lovrModelDataAllocate(model);
model->buffers[0] = (ModelBuffer) {
.data = (char*) vrModel->rVertexData,
@ -419,10 +424,6 @@ static ModelData* openvrControllerNewModelData(Controller* controller) {
.stride = sizeof(uint16_t)
};
// Attributes
model->attributeCount = 4;
model->attributes = calloc(model->attributeCount, sizeof(ModelAttribute));
model->attributes[0] = (ModelAttribute) {
.buffer = 0,
.offset = offsetof(RenderModel_Vertex_t, vPosition),
@ -455,32 +456,20 @@ static ModelData* openvrControllerNewModelData(Controller* controller) {
.components = 1
};
// Images
RenderModel_TextureMap_t* vrTexture = state.deviceTextures[id];
model->imageCount = 1;
model->images = calloc(model->imageCount, sizeof(TextureData**));
model->images[0] = lovrTextureDataCreate(vrTexture->unWidth, vrTexture->unHeight, 0, FORMAT_RGBA);
memcpy(model->images[0]->blob.data, vrTexture->rubTextureMapData, vrTexture->unWidth * vrTexture->unHeight * 4);
// Textures
model->textureCount = 1;
model->textures = calloc(model->textureCount, sizeof(ModelTexture));
model->textures[0] = (ModelTexture) {
.imageIndex = 0,
.filter = lovrGraphicsGetDefaultFilter()
};
// Material
model->materialCount = 1;
model->materials = calloc(model->materialCount, sizeof(ModelMaterial));
model->materials[0] = (ModelMaterial) {
.colors[COLOR_DIFFUSE] = { 1.f, 1.f, 1.f, 1.f },
.textures[TEXTURE_DIFFUSE] = 0
};
// Primitives
model->primitiveCount = 1;
model->primitives = calloc(model->primitiveCount, sizeof(ModelPrimitive));
model->primitives[0] = (ModelPrimitive) {
.mode = DRAW_TRIANGLES,
.attributes = {
@ -492,17 +481,12 @@ static ModelData* openvrControllerNewModelData(Controller* controller) {
.material = 0
};
// Nodes
model->nodeCount = 1;
model->nodes = calloc(model->nodeCount, sizeof(ModelNode));
model->nodes[0] = (ModelNode) {
.transform = MAT4_IDENTITY,
.primitiveIndex = 0,
.primitiveCount = 1
};
model->rootNode = 0;
return model;
}

1
src/lib/jsmn/jsmn.h
View File

@ -2,6 +2,7 @@
#define __JSMN_H_
#define JSMN_PARENT_LINKS
#define JSMN_STRICT
#include <stddef.h>