turanszkij
878 lines
26 KiB
C++
878 lines
26 KiB
C++
#include "stdafx.h"
|
|
#include "wiSceneSystem.h"
|
|
#include "ModelImporter.h"
|
|
|
|
#include "Utility/stb_image.h"
|
|
|
|
#define TINYGLTF_IMPLEMENTATION
|
|
#define TINYGLTF_NO_STB_IMAGE
|
|
#define TINYGLTF_NO_STB_IMAGE_WRITE
|
|
#include "tiny_gltf.h"
|
|
|
|
#include <fstream>
|
|
#include <sstream>
|
|
|
|
using namespace std;
|
|
using namespace wiGraphicsTypes;
|
|
using namespace wiSceneSystem;
|
|
using namespace wiECS;
|
|
|
|
|
|
// Transform the data from glTF space to engine-space:
|
|
static const bool transform_to_LH = true;
|
|
|
|
|
|
namespace tinygltf
|
|
{
|
|
bool LoadImageData(Image *image, std::string *err, std::string *warn,
|
|
int req_width, int req_height, const unsigned char *bytes,
|
|
int size, void *)
|
|
{
|
|
(void)warn;
|
|
|
|
const int requiredComponents = 4;
|
|
|
|
int w, h, comp;
|
|
unsigned char *data = stbi_load_from_memory(bytes, size, &w, &h, &comp, requiredComponents);
|
|
if (!data) {
|
|
// NOTE: you can use `warn` instead of `err`
|
|
if (err) {
|
|
(*err) += "Unknown image format.\n";
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (w < 1 || h < 1) {
|
|
free(data);
|
|
if (err) {
|
|
(*err) += "Invalid image data.\n";
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (req_width > 0) {
|
|
if (req_width != w) {
|
|
free(data);
|
|
if (err) {
|
|
(*err) += "Image width mismatch.\n";
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (req_height > 0) {
|
|
if (req_height != h) {
|
|
free(data);
|
|
if (err) {
|
|
(*err) += "Image height mismatch.\n";
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
image->width = w;
|
|
image->height = h;
|
|
image->component = requiredComponents;
|
|
image->image.resize(static_cast<size_t>(w * h * image->component));
|
|
std::copy(data, data + w * h * image->component, image->image.begin());
|
|
|
|
free(data);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool WriteImageData(const std::string *basepath, const std::string *filename,
|
|
Image *image, bool embedImages, void *)
|
|
{
|
|
assert(0); // TODO
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
void RegisterTexture2D(tinygltf::Image *image)
|
|
{
|
|
// We will load the texture2d by hand here and register to the resource manager
|
|
{
|
|
int width = image->width;
|
|
int height = image->height;
|
|
int channelCount = image->component;
|
|
const unsigned char* rgb = image->image.data();
|
|
|
|
if (rgb != nullptr)
|
|
{
|
|
TextureDesc desc;
|
|
desc.ArraySize = 1;
|
|
desc.BindFlags = BIND_SHADER_RESOURCE | BIND_UNORDERED_ACCESS;
|
|
desc.CPUAccessFlags = 0;
|
|
desc.Format = FORMAT_R8G8B8A8_UNORM;
|
|
desc.Height = static_cast<uint32_t>(height);
|
|
desc.Width = static_cast<uint32_t>(width);
|
|
desc.MipLevels = (UINT)log2(max(width, height));
|
|
desc.MiscFlags = 0;
|
|
desc.Usage = USAGE_DEFAULT;
|
|
|
|
UINT mipwidth = width;
|
|
SubresourceData* InitData = new SubresourceData[desc.MipLevels];
|
|
for (UINT mip = 0; mip < desc.MipLevels; ++mip)
|
|
{
|
|
InitData[mip].pSysMem = rgb;
|
|
InitData[mip].SysMemPitch = static_cast<UINT>(mipwidth * channelCount);
|
|
mipwidth = max(1, mipwidth / 2);
|
|
}
|
|
|
|
Texture2D* tex = new Texture2D;
|
|
tex->RequestIndependentShaderResourcesForMIPs(true);
|
|
tex->RequestIndependentUnorderedAccessResourcesForMIPs(true);
|
|
HRESULT hr = wiRenderer::GetDevice()->CreateTexture2D(&desc, InitData, &tex);
|
|
assert(SUCCEEDED(hr));
|
|
|
|
if (tex != nullptr)
|
|
{
|
|
wiRenderer::AddDeferredMIPGen(tex);
|
|
|
|
if (image->name.empty())
|
|
{
|
|
static UINT imgcounter = 0;
|
|
stringstream ss("");
|
|
ss << "gltfLoader_image" << imgcounter++;
|
|
image->name = ss.str();
|
|
}
|
|
// We loaded the texture2d, so register to the resource manager to be retrieved later:
|
|
wiResourceManager::GetGlobal()->Register(image->name, tex, wiResourceManager::IMAGE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
struct LoaderState
|
|
{
|
|
tinygltf::Model gltfModel;
|
|
Scene scene;
|
|
unordered_map<const tinygltf::Node*, Entity> entityMap;
|
|
vector<Entity> materialArray;
|
|
vector<Entity> meshArray;
|
|
vector<Entity> armatureArray;
|
|
};
|
|
|
|
// Recursively loads nodes and resolves hierarchy:
|
|
void LoadNode(tinygltf::Node* node, Entity parent, LoaderState& state)
|
|
{
|
|
if (node == nullptr)
|
|
{
|
|
return;
|
|
}
|
|
|
|
Entity entity = INVALID_ENTITY;
|
|
|
|
if(node->mesh >= 0)
|
|
{
|
|
entity = state.scene.Entity_CreateObject(node->name);
|
|
ObjectComponent& object = *state.scene.objects.GetComponent(entity);
|
|
|
|
if (node->mesh < state.meshArray.size())
|
|
{
|
|
object.meshID = state.meshArray[node->mesh];
|
|
|
|
if (node->skin >= 0)
|
|
{
|
|
MeshComponent& mesh = *state.scene.meshes.GetComponent(object.meshID);
|
|
assert(!mesh.vertex_boneindices.empty());
|
|
mesh.armatureID = state.armatureArray[node->skin];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
assert(0);
|
|
}
|
|
}
|
|
else if (node->camera >= 0)
|
|
{
|
|
if (node->name.empty())
|
|
{
|
|
static int camID = 0;
|
|
stringstream ss("");
|
|
ss << "cam" << camID++;
|
|
node->name = ss.str();
|
|
}
|
|
|
|
entity = state.scene.Entity_CreateCamera(node->name, (float)wiRenderer::GetInternalResolution().x, (float)wiRenderer::GetInternalResolution().y, 0.1f, 800);
|
|
}
|
|
|
|
if (entity == INVALID_ENTITY)
|
|
{
|
|
entity = CreateEntity();
|
|
state.scene.transforms.Create(entity);
|
|
}
|
|
|
|
state.entityMap[node] = entity;
|
|
|
|
TransformComponent& transform = *state.scene.transforms.GetComponent(entity);
|
|
if (!node->scale.empty())
|
|
{
|
|
transform.scale_local = XMFLOAT3((float)node->scale[0], (float)node->scale[1], (float)node->scale[2]);
|
|
}
|
|
if (!node->rotation.empty())
|
|
{
|
|
transform.rotation_local = XMFLOAT4((float)node->rotation[0], (float)node->rotation[1], (float)node->rotation[2], (float)node->rotation[3]);
|
|
}
|
|
if (!node->translation.empty())
|
|
{
|
|
transform.translation_local = XMFLOAT3((float)node->translation[0], (float)node->translation[1], (float)node->translation[2]);
|
|
}
|
|
|
|
// Important:
|
|
// Do NOT call UpdateTransform, because Attach will query parent world matrix, and invert it for bind matrix
|
|
// But here we load everything in bind space (relative to parent) already, so it must be IDENTITY!
|
|
|
|
if (parent != INVALID_ENTITY)
|
|
{
|
|
state.scene.Component_Attach(entity, parent);
|
|
}
|
|
|
|
if (!node->children.empty())
|
|
{
|
|
for (int child : node->children)
|
|
{
|
|
LoadNode(&state.gltfModel.nodes[child], entity, state);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ImportModel_GLTF(const std::string& fileName)
|
|
{
|
|
string directory, name;
|
|
wiHelper::SplitPath(fileName, directory, name);
|
|
string extension = wiHelper::toUpper(wiHelper::GetExtensionFromFileName(name));
|
|
wiHelper::RemoveExtensionFromFileName(name);
|
|
|
|
|
|
tinygltf::TinyGLTF loader;
|
|
std::string err;
|
|
std::string warn;
|
|
|
|
loader.SetImageLoader(tinygltf::LoadImageData, nullptr);
|
|
loader.SetImageWriter(tinygltf::WriteImageData, nullptr);
|
|
|
|
LoaderState state;
|
|
|
|
bool ret;
|
|
if (!extension.compare("GLTF"))
|
|
{
|
|
ret = loader.LoadASCIIFromFile(&state.gltfModel, &err, &warn, fileName);
|
|
}
|
|
else
|
|
{
|
|
ret = loader.LoadBinaryFromFile(&state.gltfModel, &err, &warn, fileName); // for binary glTF(.glb)
|
|
}
|
|
if (!ret) {
|
|
wiHelper::messageBox(err, "GLTF error!");
|
|
}
|
|
|
|
Entity rootEntity = CreateEntity();
|
|
state.scene.transforms.Create(rootEntity);
|
|
|
|
// Create materials:
|
|
for (auto& x : state.gltfModel.materials)
|
|
{
|
|
Entity materialEntity = state.scene.Entity_CreateMaterial(x.name);
|
|
|
|
state.materialArray.push_back(materialEntity);
|
|
|
|
MaterialComponent& material = *state.scene.materials.GetComponent(materialEntity);
|
|
|
|
material.baseColor = XMFLOAT4(1, 1, 1, 1);
|
|
material.roughness = 1.0f;
|
|
material.metalness = 1.0f;
|
|
material.reflectance = 0.02f;
|
|
material.emissive = 0;
|
|
|
|
auto& baseColorTexture = x.values.find("baseColorTexture");
|
|
auto& metallicRoughnessTexture = x.values.find("metallicRoughnessTexture");
|
|
auto& normalTexture = x.additionalValues.find("normalTexture");
|
|
auto& emissiveTexture = x.additionalValues.find("emissiveTexture");
|
|
auto& occlusionTexture = x.additionalValues.find("occlusionTexture");
|
|
|
|
auto& baseColorFactor = x.values.find("baseColorFactor");
|
|
auto& roughnessFactor = x.values.find("roughnessFactor");
|
|
auto& metallicFactor = x.values.find("metallicFactor");
|
|
auto& emissiveFactor = x.additionalValues.find("emissiveFactor");
|
|
auto& alphaCutoff = x.additionalValues.find("alphaCutoff");
|
|
|
|
if (baseColorTexture != x.values.end())
|
|
{
|
|
auto& tex = state.gltfModel.textures[baseColorTexture->second.TextureIndex()];
|
|
auto& img = state.gltfModel.images[tex.source];
|
|
RegisterTexture2D(&img);
|
|
material.baseColorMapName = img.name;
|
|
}
|
|
else if(!state.gltfModel.images.empty())
|
|
{
|
|
// For some reason, we don't have diffuse texture, but have other textures
|
|
// I have a problem, because one model viewer displays textures on a model which has no basecolor set in its material...
|
|
// This is probably not how it should be (todo)
|
|
RegisterTexture2D(&state.gltfModel.images[0]);
|
|
material.baseColorMapName = state.gltfModel.images[0].name;
|
|
}
|
|
|
|
tinygltf::Image* img_nor = nullptr;
|
|
tinygltf::Image* img_met_rough = nullptr;
|
|
tinygltf::Image* img_emissive = nullptr;
|
|
|
|
if (normalTexture != x.additionalValues.end())
|
|
{
|
|
auto& tex = state.gltfModel.textures[normalTexture->second.TextureIndex()];
|
|
img_nor = &state.gltfModel.images[tex.source];
|
|
}
|
|
if (metallicRoughnessTexture != x.values.end())
|
|
{
|
|
auto& tex = state.gltfModel.textures[metallicRoughnessTexture->second.TextureIndex()];
|
|
img_met_rough = &state.gltfModel.images[tex.source];
|
|
}
|
|
if (emissiveTexture != x.additionalValues.end())
|
|
{
|
|
auto& tex = state.gltfModel.textures[emissiveTexture->second.TextureIndex()];
|
|
img_emissive = &state.gltfModel.images[tex.source];
|
|
}
|
|
|
|
// Now we will begin interleaving texture data to match engine layout:
|
|
|
|
if (img_nor != nullptr)
|
|
{
|
|
uint32_t* data32_roughness = nullptr;
|
|
if (img_met_rough != nullptr && img_met_rough->width == img_nor->width && img_met_rough->height == img_nor->height)
|
|
{
|
|
data32_roughness = (uint32_t*)img_met_rough->image.data();
|
|
}
|
|
else if (img_met_rough != nullptr)
|
|
{
|
|
wiBackLog::post("[gltf] Warning: there is a normalmap and roughness texture, but not the same size! Roughness will not be baked in!");
|
|
}
|
|
|
|
// Convert normal map:
|
|
uint32_t* data32 = (uint32_t*)img_nor->image.data();
|
|
for (int i = 0; i < img_nor->width * img_nor->height; ++i)
|
|
{
|
|
uint32_t pixel = data32[i];
|
|
float r = ((pixel >> 0) & 255) / 255.0f;
|
|
float g = ((pixel >> 8) & 255) / 255.0f;
|
|
float b = ((pixel >> 16) & 255) / 255.0f;
|
|
float a = ((pixel >> 24) & 255) / 255.0f;
|
|
|
|
// swap normal y direction:
|
|
g = 1 - g;
|
|
|
|
// reset roughness:
|
|
a = 1;
|
|
|
|
if (data32_roughness != nullptr)
|
|
{
|
|
// add roughness from texture (G):
|
|
a = ((data32_roughness[i] >> 8) & 255) / 255.0f;
|
|
a = max(1.0f / 255.0f, a); // disallow 0 roughness (but is it really a good idea to do it here???)
|
|
}
|
|
|
|
uint32_t rgba8 = 0;
|
|
rgba8 |= (uint32_t)(r * 255.0f) << 0;
|
|
rgba8 |= (uint32_t)(g * 255.0f) << 8;
|
|
rgba8 |= (uint32_t)(b * 255.0f) << 16;
|
|
rgba8 |= (uint32_t)(a * 255.0f) << 24;
|
|
|
|
data32[i] = rgba8;
|
|
}
|
|
|
|
RegisterTexture2D(img_nor);
|
|
material.normalMapName = img_nor->name;
|
|
}
|
|
|
|
if (img_met_rough != nullptr)
|
|
{
|
|
uint32_t* data32_emissive = nullptr;
|
|
if (img_emissive != nullptr && img_emissive->width == img_met_rough->width && img_emissive->height == img_met_rough->height)
|
|
{
|
|
data32_emissive = (uint32_t*)img_emissive->image.data();
|
|
}
|
|
|
|
uint32_t* data32 = (uint32_t*)img_met_rough->image.data();
|
|
for (int i = 0; i < img_met_rough->width * img_met_rough->height; ++i)
|
|
{
|
|
uint32_t pixel = data32[i];
|
|
float r = ((pixel >> 0) & 255) / 255.0f;
|
|
float g = ((pixel >> 8) & 255) / 255.0f;
|
|
float b = ((pixel >> 16) & 255) / 255.0f;
|
|
float a = ((pixel >> 24) & 255) / 255.0f;
|
|
|
|
float reflectance = 1;
|
|
float metalness = b;
|
|
float emissive = 0;
|
|
float sss = 1;
|
|
|
|
if (data32_emissive != nullptr)
|
|
{
|
|
// add emissive from texture (R):
|
|
// (Currently only supporting single channel emissive)
|
|
emissive = ((data32_emissive[i] >> 0) & 255) / 255.0f;
|
|
}
|
|
|
|
uint32_t rgba8 = 0;
|
|
rgba8 |= (uint32_t)(reflectance * 255.0f) << 0;
|
|
rgba8 |= (uint32_t)(metalness * 255.0f) << 8;
|
|
rgba8 |= (uint32_t)(emissive * 255.0f) << 16;
|
|
rgba8 |= (uint32_t)(sss * 255.0f) << 24;
|
|
|
|
data32[i] = rgba8;
|
|
}
|
|
|
|
RegisterTexture2D(img_met_rough);
|
|
material.surfaceMapName = img_met_rough->name;
|
|
}
|
|
else if (img_emissive != nullptr)
|
|
{
|
|
// No metalness texture, just emissive...
|
|
uint32_t* data32 = (uint32_t*)img_emissive->image.data();
|
|
|
|
if (data32 != nullptr)
|
|
{
|
|
for (int i = 0; i < img_emissive->width * img_emissive->height; ++i)
|
|
{
|
|
uint32_t pixel = data32[i];
|
|
float r = ((pixel >> 0) & 255) / 255.0f;
|
|
float g = ((pixel >> 8) & 255) / 255.0f;
|
|
float b = ((pixel >> 16) & 255) / 255.0f;
|
|
float a = ((pixel >> 24) & 255) / 255.0f;
|
|
|
|
float reflectance = 1;
|
|
float metalness = 1;
|
|
float emissive = r;
|
|
float sss = 1;
|
|
|
|
uint32_t rgba8 = 0;
|
|
rgba8 |= (uint32_t)(reflectance * 255.0f) << 0;
|
|
rgba8 |= (uint32_t)(metalness * 255.0f) << 8;
|
|
rgba8 |= (uint32_t)(emissive * 255.0f) << 16;
|
|
rgba8 |= (uint32_t)(sss * 255.0f) << 24;
|
|
|
|
data32[i] = rgba8;
|
|
}
|
|
|
|
RegisterTexture2D(img_emissive);
|
|
material.surfaceMapName = img_emissive->name;
|
|
}
|
|
}
|
|
|
|
// Retrieve textures by name:
|
|
if (!material.baseColorMapName.empty())
|
|
material.baseColorMap = (Texture2D*)wiResourceManager::GetGlobal()->add(material.baseColorMapName);
|
|
if (!material.normalMapName.empty())
|
|
material.normalMap = (Texture2D*)wiResourceManager::GetGlobal()->add(material.normalMapName);
|
|
if (!material.surfaceMapName.empty())
|
|
material.surfaceMap = (Texture2D*)wiResourceManager::GetGlobal()->add(material.surfaceMapName);
|
|
|
|
if (baseColorFactor != x.values.end())
|
|
{
|
|
material.baseColor.x = static_cast<float>(baseColorFactor->second.ColorFactor()[0]);
|
|
material.baseColor.y = static_cast<float>(baseColorFactor->second.ColorFactor()[1]);
|
|
material.baseColor.z = static_cast<float>(baseColorFactor->second.ColorFactor()[2]);
|
|
}
|
|
if (roughnessFactor != x.values.end())
|
|
{
|
|
material.roughness = static_cast<float>(roughnessFactor->second.Factor());
|
|
}
|
|
if (metallicFactor != x.values.end())
|
|
{
|
|
material.metalness = static_cast<float>(metallicFactor->second.Factor());
|
|
}
|
|
if (emissiveFactor != x.additionalValues.end())
|
|
{
|
|
material.emissive = static_cast<float>(emissiveFactor->second.ColorFactor()[0]);
|
|
}
|
|
if (alphaCutoff != x.additionalValues.end())
|
|
{
|
|
material.alphaRef = 1 - static_cast<float>(alphaCutoff->second.Factor());
|
|
}
|
|
|
|
}
|
|
|
|
if (state.materialArray.empty())
|
|
{
|
|
Entity materialEntity = state.scene.Entity_CreateMaterial("GLTFImport_defaultMaterial");
|
|
state.materialArray.push_back(materialEntity);
|
|
}
|
|
|
|
// Create meshes:
|
|
for (auto& x : state.gltfModel.meshes)
|
|
{
|
|
Entity meshEntity = state.scene.Entity_CreateMesh(x.name);
|
|
|
|
state.meshArray.push_back(meshEntity);
|
|
|
|
MeshComponent& mesh = *state.scene.meshes.GetComponent(meshEntity);
|
|
|
|
for (auto& prim : x.primitives)
|
|
{
|
|
assert(prim.indices >= 0);
|
|
|
|
// Fill indices:
|
|
const tinygltf::Accessor& accessor = state.gltfModel.accessors[prim.indices];
|
|
const tinygltf::BufferView& bufferView = state.gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer& buffer = state.gltfModel.buffers[bufferView.buffer];
|
|
|
|
int stride = accessor.ByteStride(bufferView);
|
|
size_t indexCount = accessor.count;
|
|
size_t indexOffset = mesh.indices.size();
|
|
mesh.indices.resize(indexOffset + indexCount);
|
|
|
|
mesh.subsets.push_back(MeshComponent::MeshSubset());
|
|
mesh.subsets.back().indexOffset = (uint32_t)indexOffset;
|
|
mesh.subsets.back().indexCount = (uint32_t)indexCount;
|
|
|
|
mesh.subsets.back().materialID = state.materialArray[max(0, prim.material)];
|
|
|
|
uint32_t vertexOffset = (uint32_t)mesh.vertex_positions.size();
|
|
|
|
const unsigned char* data = buffer.data.data() + accessor.byteOffset + bufferView.byteOffset;
|
|
|
|
if (stride == 1)
|
|
{
|
|
for (size_t i = 0; i < indexCount; i += 3)
|
|
{
|
|
mesh.indices[indexOffset + i + 0] = vertexOffset + data[i + 0];
|
|
mesh.indices[indexOffset + i + 1] = vertexOffset + data[i + 1];
|
|
mesh.indices[indexOffset + i + 2] = vertexOffset + data[i + 2];
|
|
}
|
|
}
|
|
else if (stride == 2)
|
|
{
|
|
for (size_t i = 0; i < indexCount; i += 3)
|
|
{
|
|
mesh.indices[indexOffset + i + 0] = vertexOffset + ((uint16_t*)data)[i + 0];
|
|
mesh.indices[indexOffset + i + 1] = vertexOffset + ((uint16_t*)data)[i + 1];
|
|
mesh.indices[indexOffset + i + 2] = vertexOffset + ((uint16_t*)data)[i + 2];
|
|
}
|
|
}
|
|
else if (stride == 4)
|
|
{
|
|
for (size_t i = 0; i < indexCount; i += 3)
|
|
{
|
|
mesh.indices[indexOffset + i + 0] = vertexOffset + ((uint32_t*)data)[i + 0];
|
|
mesh.indices[indexOffset + i + 1] = vertexOffset + ((uint32_t*)data)[i + 1];
|
|
mesh.indices[indexOffset + i + 2] = vertexOffset + ((uint32_t*)data)[i + 2];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
assert(0 && "unsupported index stride!");
|
|
}
|
|
|
|
for (auto& attr : prim.attributes)
|
|
{
|
|
const string& attr_name = attr.first;
|
|
int attr_data = attr.second;
|
|
|
|
const tinygltf::Accessor& accessor = state.gltfModel.accessors[attr_data];
|
|
const tinygltf::BufferView& bufferView = state.gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer& buffer = state.gltfModel.buffers[bufferView.buffer];
|
|
|
|
int stride = accessor.ByteStride(bufferView);
|
|
size_t vertexCount = accessor.count;
|
|
|
|
const unsigned char* data = buffer.data.data() + accessor.byteOffset + bufferView.byteOffset;
|
|
|
|
if (!attr_name.compare("POSITION"))
|
|
{
|
|
mesh.vertex_positions.resize(vertexOffset + vertexCount);
|
|
assert(stride == 12);
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
mesh.vertex_positions[vertexOffset + i] = ((XMFLOAT3*)data)[i];
|
|
}
|
|
}
|
|
else if (!attr_name.compare("NORMAL"))
|
|
{
|
|
mesh.vertex_normals.resize(vertexOffset + vertexCount);
|
|
assert(stride == 12);
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
mesh.vertex_normals[vertexOffset + i] = ((XMFLOAT3*)data)[i];
|
|
}
|
|
}
|
|
else if (!attr_name.compare("TEXCOORD_0"))
|
|
{
|
|
mesh.vertex_texcoords.resize(vertexOffset + vertexCount);
|
|
assert(stride == 8);
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
const XMFLOAT2& tex = ((XMFLOAT2*)data)[i];
|
|
|
|
mesh.vertex_texcoords[vertexOffset + i].x = tex.x;
|
|
mesh.vertex_texcoords[vertexOffset + i].y = tex.y;
|
|
}
|
|
}
|
|
else if (!attr_name.compare("JOINTS_0"))
|
|
{
|
|
mesh.vertex_boneindices.resize(vertexOffset + vertexCount);
|
|
if (stride == 4)
|
|
{
|
|
struct JointTmp
|
|
{
|
|
uint8_t ind[4];
|
|
};
|
|
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
const JointTmp& joint = ((JointTmp*)data)[i];
|
|
|
|
mesh.vertex_boneindices[vertexOffset + i].x = joint.ind[0];
|
|
mesh.vertex_boneindices[vertexOffset + i].y = joint.ind[1];
|
|
mesh.vertex_boneindices[vertexOffset + i].z = joint.ind[2];
|
|
mesh.vertex_boneindices[vertexOffset + i].w = joint.ind[3];
|
|
}
|
|
}
|
|
else if (stride == 8)
|
|
{
|
|
struct JointTmp
|
|
{
|
|
uint16_t ind[4];
|
|
};
|
|
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
const JointTmp& joint = ((JointTmp*)data)[i];
|
|
|
|
mesh.vertex_boneindices[vertexOffset + i].x = joint.ind[0];
|
|
mesh.vertex_boneindices[vertexOffset + i].y = joint.ind[1];
|
|
mesh.vertex_boneindices[vertexOffset + i].z = joint.ind[2];
|
|
mesh.vertex_boneindices[vertexOffset + i].w = joint.ind[3];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
assert(0);
|
|
}
|
|
}
|
|
else if (!attr_name.compare("WEIGHTS_0"))
|
|
{
|
|
mesh.vertex_boneweights.resize(vertexOffset + vertexCount);
|
|
assert(stride == 16);
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
mesh.vertex_boneweights[vertexOffset + i] = ((XMFLOAT4*)data)[i];
|
|
}
|
|
}
|
|
else if (!attr_name.compare("COLOR_0"))
|
|
{
|
|
mesh.vertex_colors.resize(vertexOffset + vertexCount);
|
|
assert(stride == 16);
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
const XMFLOAT4& color = ((XMFLOAT4*)data)[i];
|
|
uint32_t rgba = wiMath::CompressColor(color);
|
|
|
|
mesh.vertex_colors[vertexOffset + i] = rgba;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
mesh.CreateRenderData();
|
|
}
|
|
|
|
// Create armatures:
|
|
for (auto& skin : state.gltfModel.skins)
|
|
{
|
|
Entity armatureEntity = CreateEntity();
|
|
state.scene.names.Create(armatureEntity) = skin.name;
|
|
state.scene.layers.Create(armatureEntity);
|
|
TransformComponent& transform = state.scene.transforms.Create(armatureEntity);
|
|
ArmatureComponent& armature = state.scene.armatures.Create(armatureEntity);
|
|
|
|
state.armatureArray.push_back(armatureEntity);
|
|
|
|
if (transform_to_LH)
|
|
{
|
|
XMStoreFloat4x4(&armature.remapMatrix, XMMatrixScaling(1, 1, -1));
|
|
}
|
|
|
|
if (skin.inverseBindMatrices >= 0)
|
|
{
|
|
const tinygltf::Accessor &accessor = state.gltfModel.accessors[skin.inverseBindMatrices];
|
|
const tinygltf::BufferView &bufferView = state.gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer &buffer = state.gltfModel.buffers[bufferView.buffer];
|
|
armature.inverseBindMatrices.resize(accessor.count);
|
|
memcpy(armature.inverseBindMatrices.data(), &buffer.data[accessor.byteOffset + bufferView.byteOffset], accessor.count * sizeof(XMFLOAT4X4));
|
|
}
|
|
else
|
|
{
|
|
assert(0);
|
|
}
|
|
}
|
|
|
|
// Create transform hierarchy, assign objects, meshes, armatures, cameras:
|
|
const tinygltf::Scene &gltfScene = state.gltfModel.scenes[max(0, state.gltfModel.defaultScene)];
|
|
for (size_t i = 0; i < gltfScene.nodes.size(); i++)
|
|
{
|
|
LoadNode(&state.gltfModel.nodes[gltfScene.nodes[i]], rootEntity, state);
|
|
}
|
|
|
|
// Create armature-bone mappings:
|
|
int armatureIndex = 0;
|
|
for (auto& skin : state.gltfModel.skins)
|
|
{
|
|
Entity entity = state.armatureArray[armatureIndex++];
|
|
ArmatureComponent& armature = *state.scene.armatures.GetComponent(entity);
|
|
|
|
const size_t jointCount = skin.joints.size();
|
|
|
|
armature.boneCollection.resize(jointCount);
|
|
|
|
// Create bone collection:
|
|
for (size_t i = 0; i < jointCount; ++i)
|
|
{
|
|
int jointIndex = skin.joints[i];
|
|
const tinygltf::Node& joint_node = state.gltfModel.nodes[jointIndex];
|
|
|
|
Entity boneEntity = state.entityMap[&joint_node];
|
|
|
|
armature.boneCollection[i] = boneEntity;
|
|
}
|
|
}
|
|
|
|
// Create animations:
|
|
for (auto& anim : state.gltfModel.animations)
|
|
{
|
|
Entity entity = CreateEntity();
|
|
state.scene.names.Create(entity) = anim.name;
|
|
AnimationComponent& animationcomponent = state.scene.animations.Create(entity);
|
|
animationcomponent.samplers.resize(anim.samplers.size());
|
|
animationcomponent.channels.resize(anim.channels.size());
|
|
|
|
for (size_t i = 0; i < anim.samplers.size(); ++i)
|
|
{
|
|
auto& sam = anim.samplers[i];
|
|
|
|
if (!sam.interpolation.compare("LINEAR"))
|
|
{
|
|
animationcomponent.samplers[i].mode = AnimationComponent::AnimationSampler::Mode::LINEAR;
|
|
}
|
|
else if (!sam.interpolation.compare("STEP"))
|
|
{
|
|
animationcomponent.samplers[i].mode = AnimationComponent::AnimationSampler::Mode::STEP;
|
|
}
|
|
|
|
// AnimationSampler input = keyframe times
|
|
{
|
|
const tinygltf::Accessor& accessor = state.gltfModel.accessors[sam.input];
|
|
const tinygltf::BufferView& bufferView = state.gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer& buffer = state.gltfModel.buffers[bufferView.buffer];
|
|
|
|
assert(accessor.componentType == TINYGLTF_COMPONENT_TYPE_FLOAT);
|
|
|
|
int stride = accessor.ByteStride(bufferView);
|
|
size_t count = accessor.count;
|
|
|
|
animationcomponent.samplers[i].keyframe_times.resize(count);
|
|
|
|
const unsigned char* data = buffer.data.data() + accessor.byteOffset + bufferView.byteOffset;
|
|
|
|
assert(stride == 4);
|
|
|
|
for (size_t j = 0; j < count; ++j)
|
|
{
|
|
float time = ((float*)data)[j];
|
|
animationcomponent.samplers[i].keyframe_times[j] = time;
|
|
animationcomponent.start = min(animationcomponent.start, time);
|
|
animationcomponent.end = max(animationcomponent.end, time);
|
|
}
|
|
|
|
}
|
|
|
|
// AnimationSampler output = keyframe data
|
|
{
|
|
const tinygltf::Accessor& accessor = state.gltfModel.accessors[sam.output];
|
|
const tinygltf::BufferView& bufferView = state.gltfModel.bufferViews[accessor.bufferView];
|
|
const tinygltf::Buffer& buffer = state.gltfModel.buffers[bufferView.buffer];
|
|
|
|
int stride = accessor.ByteStride(bufferView);
|
|
size_t count = accessor.count;
|
|
|
|
const unsigned char* data = buffer.data.data() + accessor.byteOffset + bufferView.byteOffset;
|
|
|
|
switch (accessor.type)
|
|
{
|
|
case TINYGLTF_TYPE_VEC3:
|
|
{
|
|
assert(stride == sizeof(XMFLOAT3));
|
|
animationcomponent.samplers[i].keyframe_data.resize(count * 3);
|
|
for (size_t j = 0; j < count; ++j)
|
|
{
|
|
((XMFLOAT3*)animationcomponent.samplers[i].keyframe_data.data())[j] = ((XMFLOAT3*)data)[j];
|
|
}
|
|
}
|
|
break;
|
|
case TINYGLTF_TYPE_VEC4:
|
|
{
|
|
assert(stride == sizeof(XMFLOAT4));
|
|
animationcomponent.samplers[i].keyframe_data.resize(count * 4);
|
|
for (size_t j = 0; j < count; ++j)
|
|
{
|
|
((XMFLOAT4*)animationcomponent.samplers[i].keyframe_data.data())[j] = ((XMFLOAT4*)data)[j];
|
|
}
|
|
}
|
|
break;
|
|
default: assert(0); break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
for (size_t i = 0; i < anim.channels.size(); ++i)
|
|
{
|
|
auto& channel = anim.channels[i];
|
|
|
|
animationcomponent.channels[i].target = state.entityMap[&state.gltfModel.nodes[channel.target_node]];
|
|
assert(channel.sampler >= 0);
|
|
animationcomponent.channels[i].samplerIndex = (uint32_t)channel.sampler;
|
|
|
|
if (!channel.target_path.compare("scale"))
|
|
{
|
|
animationcomponent.channels[i].path = AnimationComponent::AnimationChannel::Path::SCALE;
|
|
}
|
|
else if (!channel.target_path.compare("rotation"))
|
|
{
|
|
animationcomponent.channels[i].path = AnimationComponent::AnimationChannel::Path::ROTATION;
|
|
}
|
|
else if (!channel.target_path.compare("translation"))
|
|
{
|
|
animationcomponent.channels[i].path = AnimationComponent::AnimationChannel::Path::TRANSLATION;
|
|
}
|
|
else
|
|
{
|
|
animationcomponent.channels[i].path = AnimationComponent::AnimationChannel::Path::UNKNOWN;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if (transform_to_LH)
|
|
{
|
|
TransformComponent& transform = *state.scene.transforms.GetComponent(rootEntity);
|
|
transform.scale_local.z = -transform.scale_local.z;
|
|
transform.SetDirty();
|
|
}
|
|
|
|
// We parented everything to a root transform, but we actually don't need that after loading model.
|
|
// Apply every transformation according to root transform, then remove root all together.
|
|
// We could also keep it, but right now, it seems better to delete and have less hierarchy
|
|
state.scene.Update(0);
|
|
state.scene.Component_DetachChildren(rootEntity);
|
|
state.scene.Entity_Remove(rootEntity);
|
|
|
|
wiRenderer::GetScene().Merge(state.scene);
|
|
|
|
}
|