turanszkij
824 lines
25 KiB
C++
824 lines
25 KiB
C++
#include "stdafx.h"
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#include "wiSceneSystem.h"
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#include "ModelImporter.h"
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#include "wiRandom.h"
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#include "Utility/stb_image.h"
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#define TINYGLTF_IMPLEMENTATION
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#define TINYGLTF_NO_STB_IMAGE
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#define TINYGLTF_NO_STB_IMAGE_WRITE
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#include "tiny_gltf.h"
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#include <fstream>
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#include <sstream>
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#include <unordered_map>
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using namespace std;
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using namespace wiGraphicsTypes;
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using namespace wiSceneSystem;
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using namespace wiECS;
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// Transform the data from glTF space to engine-space:
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static const bool transform_to_LH = true;
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namespace tinygltf
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{
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bool LoadImageData(Image *image, std::string *err, std::string *warn,
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int req_width, int req_height, const unsigned char *bytes,
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int size, void *)
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{
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(void)warn;
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const int requiredComponents = 4;
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int w, h, comp;
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unsigned char *data = stbi_load_from_memory(bytes, size, &w, &h, &comp, requiredComponents);
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if (!data) {
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// NOTE: you can use `warn` instead of `err`
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if (err) {
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(*err) += "Unknown image format.\n";
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}
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return false;
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}
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if (w < 1 || h < 1) {
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free(data);
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if (err) {
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(*err) += "Invalid image data.\n";
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}
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return false;
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}
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if (req_width > 0) {
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if (req_width != w) {
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free(data);
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if (err) {
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(*err) += "Image width mismatch.\n";
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}
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return false;
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}
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}
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if (req_height > 0) {
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if (req_height != h) {
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free(data);
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if (err) {
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(*err) += "Image height mismatch.\n";
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}
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return false;
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}
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}
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image->width = w;
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image->height = h;
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image->component = requiredComponents;
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image->image.resize(static_cast<size_t>(w * h * image->component));
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std::copy(data, data + w * h * image->component, image->image.begin());
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free(data);
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return true;
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}
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bool WriteImageData(const std::string *basepath, const std::string *filename,
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Image *image, bool embedImages, void *)
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{
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assert(0); // TODO
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return false;
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}
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}
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void RegisterTexture2D(tinygltf::Image *image, const string& type_name)
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{
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// We will load the texture2d by hand here and register to the resource manager (if it was not already registered)
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if (wiResourceManager::GetGlobal().get(wiHashString(image->uri)).data == nullptr)
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{
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int width = image->width;
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int height = image->height;
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int channelCount = image->component;
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if (!image->image.empty())
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{
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TextureDesc desc;
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desc.ArraySize = 1;
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desc.BindFlags = BIND_SHADER_RESOURCE | BIND_UNORDERED_ACCESS;
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desc.CPUAccessFlags = 0;
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desc.Format = FORMAT_R8G8B8A8_UNORM;
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desc.Height = static_cast<uint32_t>(height);
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desc.Width = static_cast<uint32_t>(width);
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desc.MipLevels = (UINT)log2(max(width, height));
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desc.MiscFlags = 0;
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desc.Usage = USAGE_DEFAULT;
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UINT mipwidth = width;
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vector<SubresourceData> InitData(desc.MipLevels);
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for (UINT mip = 0; mip < desc.MipLevels; ++mip)
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{
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InitData[mip].pSysMem = image->image.data();
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InitData[mip].SysMemPitch = static_cast<UINT>(mipwidth * channelCount);
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mipwidth = max(1, mipwidth / 2);
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}
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Texture2D* tex = new Texture2D;
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tex->RequestIndependentShaderResourcesForMIPs(true);
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tex->RequestIndependentUnorderedAccessResourcesForMIPs(true);
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HRESULT hr = wiRenderer::GetDevice()->CreateTexture2D(&desc, InitData.data(), tex);
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assert(SUCCEEDED(hr));
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if (tex != nullptr)
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{
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wiRenderer::AddDeferredMIPGen(tex);
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if (image->uri.empty())
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{
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// If the texture was embedded, export it as a file:
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stringstream ss;
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do {
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ss.str("");
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ss << "gltfimport_" << type_name << "_" << wiRandom::getRandom(INT_MAX) << ".png";
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} while (wiHelper::FileExists(ss.str())); // this is to avoid overwriting an existing exported image
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image->uri = ss.str();
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bool success = wiHelper::saveTextureToFile(image->image, desc, ss.str());
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assert(success);
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}
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// We loaded the texture2d, so register to the resource manager to be retrieved later:
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wiResourceManager::GetGlobal().Register(image->uri, tex, wiResourceManager::IMAGE_2D);
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}
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}
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}
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}
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struct LoaderState
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{
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tinygltf::Model gltfModel;
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Scene scene;
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unordered_map<const tinygltf::Node*, Entity> entityMap;
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vector<Entity> materialArray;
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vector<Entity> meshArray;
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vector<Entity> armatureArray;
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};
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// Recursively loads nodes and resolves hierarchy:
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void LoadNode(tinygltf::Node* node, Entity parent, LoaderState& state)
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{
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if (node == nullptr)
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{
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return;
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}
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Entity entity = INVALID_ENTITY;
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if(node->mesh >= 0)
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{
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entity = state.scene.Entity_CreateObject(node->name);
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ObjectComponent& object = *state.scene.objects.GetComponent(entity);
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if (node->mesh < (int)state.meshArray.size())
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{
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object.meshID = state.meshArray[node->mesh];
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if (node->skin >= 0)
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{
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MeshComponent& mesh = *state.scene.meshes.GetComponent(object.meshID);
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assert(!mesh.vertex_boneindices.empty());
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mesh.armatureID = state.armatureArray[node->skin];
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}
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}
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else
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{
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assert(0);
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}
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}
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else if (node->camera >= 0)
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{
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if (node->name.empty())
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{
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static int camID = 0;
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stringstream ss("");
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ss << "cam" << camID++;
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node->name = ss.str();
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}
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entity = state.scene.Entity_CreateCamera(node->name, (float)wiRenderer::GetInternalResolution().x, (float)wiRenderer::GetInternalResolution().y, 0.1f, 800);
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}
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if (entity == INVALID_ENTITY)
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{
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entity = CreateEntity();
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state.scene.transforms.Create(entity);
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}
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state.entityMap[node] = entity;
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TransformComponent& transform = *state.scene.transforms.GetComponent(entity);
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if (!node->scale.empty())
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{
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transform.scale_local = XMFLOAT3((float)node->scale[0], (float)node->scale[1], (float)node->scale[2]);
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}
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if (!node->rotation.empty())
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{
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transform.rotation_local = XMFLOAT4((float)node->rotation[0], (float)node->rotation[1], (float)node->rotation[2], (float)node->rotation[3]);
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}
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if (!node->translation.empty())
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{
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transform.translation_local = XMFLOAT3((float)node->translation[0], (float)node->translation[1], (float)node->translation[2]);
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}
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if (!node->matrix.empty())
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{
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transform.world._11 = (float)node->matrix[0];
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transform.world._12 = (float)node->matrix[1];
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transform.world._13 = (float)node->matrix[2];
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transform.world._14 = (float)node->matrix[3];
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transform.world._21 = (float)node->matrix[4];
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transform.world._22 = (float)node->matrix[5];
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transform.world._23 = (float)node->matrix[6];
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transform.world._24 = (float)node->matrix[7];
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transform.world._31 = (float)node->matrix[8];
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transform.world._32 = (float)node->matrix[9];
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transform.world._33 = (float)node->matrix[10];
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transform.world._34 = (float)node->matrix[11];
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transform.world._41 = (float)node->matrix[12];
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transform.world._42 = (float)node->matrix[13];
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transform.world._43 = (float)node->matrix[14];
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transform.world._44 = (float)node->matrix[15];
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transform.ApplyTransform(); // this creates S, R, T vectors from world matrix
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}
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// Important:
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// Do NOT call UpdateTransform, because Attach will query parent world matrix, and invert it for bind matrix
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// But here we load everything in bind space (relative to parent) already, so it must be IDENTITY!
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transform.world = IDENTITYMATRIX;
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if (parent != INVALID_ENTITY)
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{
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state.scene.Component_Attach(entity, parent);
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}
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if (!node->children.empty())
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{
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for (int child : node->children)
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{
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LoadNode(&state.gltfModel.nodes[child], entity, state);
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}
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}
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}
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void ImportModel_GLTF(const std::string& fileName)
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{
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string directory, name;
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wiHelper::SplitPath(fileName, directory, name);
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string extension = wiHelper::toUpper(wiHelper::GetExtensionFromFileName(name));
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wiHelper::RemoveExtensionFromFileName(name);
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tinygltf::TinyGLTF loader;
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std::string err;
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std::string warn;
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loader.SetImageLoader(tinygltf::LoadImageData, nullptr);
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loader.SetImageWriter(tinygltf::WriteImageData, nullptr);
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LoaderState state;
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bool ret;
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if (!extension.compare("GLTF"))
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{
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ret = loader.LoadASCIIFromFile(&state.gltfModel, &err, &warn, fileName);
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}
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else
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{
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ret = loader.LoadBinaryFromFile(&state.gltfModel, &err, &warn, fileName); // for binary glTF(.glb)
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}
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if (!ret) {
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wiHelper::messageBox(err, "GLTF error!");
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}
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Entity rootEntity = CreateEntity();
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state.scene.transforms.Create(rootEntity);
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// Create materials:
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for (auto& x : state.gltfModel.materials)
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{
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Entity materialEntity = state.scene.Entity_CreateMaterial(x.name);
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state.materialArray.push_back(materialEntity);
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MaterialComponent& material = *state.scene.materials.GetComponent(materialEntity);
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material.baseColor = XMFLOAT4(1, 1, 1, 1);
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material.roughness = 1.0f;
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material.metalness = 1.0f;
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material.reflectance = 0.02f;
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auto& baseColorTexture = x.values.find("baseColorTexture");
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auto& metallicRoughnessTexture = x.values.find("metallicRoughnessTexture");
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auto& normalTexture = x.additionalValues.find("normalTexture");
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auto& emissiveTexture = x.additionalValues.find("emissiveTexture");
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auto& occlusionTexture = x.additionalValues.find("occlusionTexture");
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auto& baseColorFactor = x.values.find("baseColorFactor");
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auto& roughnessFactor = x.values.find("roughnessFactor");
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auto& metallicFactor = x.values.find("metallicFactor");
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auto& emissiveFactor = x.additionalValues.find("emissiveFactor");
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auto& alphaCutoff = x.additionalValues.find("alphaCutoff");
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auto& alphaMode = x.additionalValues.find("alphaMode");
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if (baseColorTexture != x.values.end())
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{
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auto& tex = state.gltfModel.textures[baseColorTexture->second.TextureIndex()];
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auto& img = state.gltfModel.images[tex.source];
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RegisterTexture2D(&img, "basecolor");
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material.baseColorMapName = img.uri;
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}
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else if(!state.gltfModel.images.empty())
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{
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// For some reason, we don't have diffuse texture, but have other textures
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// I have a problem, because one model viewer displays textures on a model which has no basecolor set in its material...
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// This is probably not how it should be (todo)
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RegisterTexture2D(&state.gltfModel.images[0], "basecolor");
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material.baseColorMapName = state.gltfModel.images[0].uri;
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}
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if (normalTexture != x.additionalValues.end())
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{
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auto& tex = state.gltfModel.textures[normalTexture->second.TextureIndex()];
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auto& img = state.gltfModel.images[tex.source];
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RegisterTexture2D(&img, "normal");
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material.normalMapName = img.uri;
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material.SetFlipNormalMap(true);
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}
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if (metallicRoughnessTexture != x.values.end())
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{
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auto& tex = state.gltfModel.textures[metallicRoughnessTexture->second.TextureIndex()];
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auto& img = state.gltfModel.images[tex.source];
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RegisterTexture2D(&img, "roughness_metallic");
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material.surfaceMapName = img.uri;
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}
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if (emissiveTexture != x.additionalValues.end())
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{
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auto& tex = state.gltfModel.textures[emissiveTexture->second.TextureIndex()];
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auto& img = state.gltfModel.images[tex.source];
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RegisterTexture2D(&img, "emissive");
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material.emissiveMapName = img.uri;
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}
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// Retrieve textures by name:
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if (!material.baseColorMapName.empty())
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material.baseColorMap = (Texture2D*)wiResourceManager::GetGlobal().add(material.baseColorMapName);
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if (!material.normalMapName.empty())
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material.normalMap = (Texture2D*)wiResourceManager::GetGlobal().add(material.normalMapName);
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if (!material.surfaceMapName.empty())
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material.surfaceMap = (Texture2D*)wiResourceManager::GetGlobal().add(material.surfaceMapName);
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if (!material.emissiveMapName.empty())
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material.emissiveMap = (Texture2D*)wiResourceManager::GetGlobal().add(material.emissiveMapName);
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if (baseColorFactor != x.values.end())
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{
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material.baseColor.x = static_cast<float>(baseColorFactor->second.ColorFactor()[0]);
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material.baseColor.y = static_cast<float>(baseColorFactor->second.ColorFactor()[1]);
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material.baseColor.z = static_cast<float>(baseColorFactor->second.ColorFactor()[2]);
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material.baseColor.w = static_cast<float>(baseColorFactor->second.ColorFactor()[3]);
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}
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if (roughnessFactor != x.values.end())
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{
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material.roughness = static_cast<float>(roughnessFactor->second.Factor());
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}
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if (metallicFactor != x.values.end())
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{
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material.metalness = static_cast<float>(metallicFactor->second.Factor());
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}
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if (emissiveFactor != x.additionalValues.end())
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{
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material.emissiveColor.x = static_cast<float>(emissiveFactor->second.ColorFactor()[0]);
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material.emissiveColor.y = static_cast<float>(emissiveFactor->second.ColorFactor()[1]);
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material.emissiveColor.z = static_cast<float>(emissiveFactor->second.ColorFactor()[2]);
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material.emissiveColor.w = static_cast<float>(emissiveFactor->second.ColorFactor()[3]);
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}
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if (alphaCutoff != x.additionalValues.end())
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{
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material.alphaRef = 1 - static_cast<float>(alphaCutoff->second.Factor());
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}
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if (alphaMode != x.additionalValues.end())
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{
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if (alphaMode->second.string_value.compare("BLEND") == 0)
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{
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material.blendMode = BLENDMODE_ALPHA;
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}
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}
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}
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if (state.materialArray.empty())
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{
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Entity materialEntity = state.scene.Entity_CreateMaterial("GLTFImport_defaultMaterial");
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state.materialArray.push_back(materialEntity);
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}
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// Create meshes:
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for (auto& x : state.gltfModel.meshes)
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{
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Entity meshEntity = state.scene.Entity_CreateMesh(x.name);
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state.meshArray.push_back(meshEntity);
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MeshComponent& mesh = *state.scene.meshes.GetComponent(meshEntity);
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for (auto& prim : x.primitives)
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{
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assert(prim.indices >= 0);
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// Fill indices:
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const tinygltf::Accessor& accessor = state.gltfModel.accessors[prim.indices];
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const tinygltf::BufferView& bufferView = state.gltfModel.bufferViews[accessor.bufferView];
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const tinygltf::Buffer& buffer = state.gltfModel.buffers[bufferView.buffer];
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int stride = accessor.ByteStride(bufferView);
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size_t indexCount = accessor.count;
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size_t indexOffset = mesh.indices.size();
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mesh.indices.resize(indexOffset + indexCount);
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mesh.subsets.push_back(MeshComponent::MeshSubset());
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mesh.subsets.back().indexOffset = (uint32_t)indexOffset;
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mesh.subsets.back().indexCount = (uint32_t)indexCount;
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mesh.subsets.back().materialID = state.materialArray[max(0, prim.material)];
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uint32_t vertexOffset = (uint32_t)mesh.vertex_positions.size();
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const unsigned char* data = buffer.data.data() + accessor.byteOffset + bufferView.byteOffset;
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int index_remap[3];
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if (transform_to_LH)
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{
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index_remap[0] = 0;
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index_remap[1] = 1;
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index_remap[2] = 2;
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}
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else
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{
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index_remap[0] = 0;
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index_remap[1] = 2;
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index_remap[2] = 1;
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}
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if (stride == 1)
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{
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for (size_t i = 0; i < indexCount; i += 3)
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{
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mesh.indices[indexOffset + i + 0] = vertexOffset + data[i + index_remap[0]];
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mesh.indices[indexOffset + i + 1] = vertexOffset + data[i + index_remap[1]];
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mesh.indices[indexOffset + i + 2] = vertexOffset + data[i + index_remap[2]];
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}
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}
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else if (stride == 2)
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{
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for (size_t i = 0; i < indexCount; i += 3)
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{
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mesh.indices[indexOffset + i + 0] = vertexOffset + ((uint16_t*)data)[i + index_remap[0]];
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mesh.indices[indexOffset + i + 1] = vertexOffset + ((uint16_t*)data)[i + index_remap[1]];
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mesh.indices[indexOffset + i + 2] = vertexOffset + ((uint16_t*)data)[i + index_remap[2]];
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}
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}
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else if (stride == 4)
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{
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for (size_t i = 0; i < indexCount; i += 3)
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{
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mesh.indices[indexOffset + i + 0] = vertexOffset + ((uint32_t*)data)[i + index_remap[0]];
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|
mesh.indices[indexOffset + i + 1] = vertexOffset + ((uint32_t*)data)[i + index_remap[1]];
|
|
mesh.indices[indexOffset + i + 2] = vertexOffset + ((uint32_t*)data)[i + index_remap[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("TEXCOORD_1"))
|
|
{
|
|
mesh.vertex_atlas.resize(vertexOffset + vertexCount);
|
|
assert(stride == 8);
|
|
for (size_t i = 0; i < vertexCount; ++i)
|
|
{
|
|
const XMFLOAT2& tex = ((XMFLOAT2*)data)[i];
|
|
|
|
mesh.vertex_atlas[vertexOffset + i].x = tex.x;
|
|
mesh.vertex_atlas[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);
|
|
|
|
}
|