basic sponza import

src/Editor/Asset/MeshLoader.cpp

@@ -536,7 +536,7 @@ void MeshLoader::loadGlobalMeshes(const aiScene* scene, const Array<PMaterialIns
             }
             Array<StaticMeshVertexData::NormalType> normals(mesh->mNumVertices);
             Array<StaticMeshVertexData::TangentType> tangents(mesh->mNumVertices);
-            Array<StaticMeshVertexData::BiTangentType> biTangents(mesh->mNumVertices);
+            //Array<StaticMeshVertexData::BiTangentType> biTangents(mesh->mNumVertices);
             Array<StaticMeshVertexData::ColorType> colors(mesh->mNumVertices);
 
             for (uint32 i = 0; i < mesh->mNumVertices; ++i) {
@@ -555,10 +555,15 @@ void MeshLoader::loadGlobalMeshes(const aiScene* scene, const Array<PMaterialIns
                     tangent = Vector(mesh->mTangents[i].x, mesh->mTangents[i].y, mesh->mTangents[i].z);
                     biTangent = Vector(mesh->mBitangents[i].x, mesh->mBitangents[i].y, mesh->mBitangents[i].z);
                 }
-                normals[i] = normal; // encodeQTangent(Matrix3(tangent, biTangent, normal));
-                tangents[i] = tangent;
-                biTangents[i] = biTangent;
 
+                normals[i] = normal; // encodeQTangent(Matrix3(tangent, biTangent, normal));
+                // the fourth component encodes the sign of the bitangent.
+                // in the shader we calc n x t, and b = (n x t) * sign
+                // so we try to cross the two, and see what is the result, and if it is 
+                // the same as b, the dot product is 1, and if they are inverse, the dot product is 
+                // -1, which is the sign we need
+                tangents[i] = Vector4(tangent, dot(glm::cross(normal, tangent), biTangent));
+                
                 if (mesh->HasVertexColors(0)) {
                     colors[i] = StaticMeshVertexData::ColorType(mesh->mColors[0][i].r * 65535, mesh->mColors[0][i].g * 65535, mesh->mColors[0][i].b * 65535);
                 } else {
@@ -572,7 +577,7 @@ void MeshLoader::loadGlobalMeshes(const aiScene* scene, const Array<PMaterialIns
             }
             vertexData->loadNormals(offset, normals);
             vertexData->loadTangents(offset, tangents);
-            vertexData->loadBitangents(offset, biTangents);
+            //vertexData->loadBitangents(offset, biTangents);
             vertexData->loadColors(offset, colors);
 
             Array<uint32> indices(mesh->mNumFaces * 3);

src/Editor/Asset/TextureLoader.cpp

@@ -42,7 +42,7 @@ void TextureLoader::importAsset(TextureImportArgs args) {
     PTextureAsset ref = asset;
     asset->setStatus(Asset::Status::Loading);
     AssetRegistry::get().registerTexture(std::move(asset));
-    import(args, ref);
+    getThreadPool().runAsync([=]() { import(args, ref); });
 }
 
 PTextureAsset TextureLoader::getPlaceholderTexture() { return placeholderAsset; }
@@ -111,13 +111,13 @@ void TextureLoader::import(TextureImportArgs args, PTextureAsset textureAsset) {
     ktxBasisParams basisParams = {
         .structSize = sizeof(ktxBasisParams),
         .uastc = true,
-        .threadCount = 14,
-        .compressionLevel = 3,
-        .uastcFlags = KTX_PACK_UASTC_LEVEL_FASTEST,
+        .threadCount = 1,
+        .compressionLevel = 2,
+        .uastcFlags = KTX_PACK_UASTC_LEVEL_FASTER,
         .uastcRDO = true,
     };
     KTX_ASSERT(ktxTexture2_CompressBasisEx(kTexture, &basisParams));
-    KTX_ASSERT(ktxTexture2_DeflateZstd(kTexture, 20));
+    KTX_ASSERT(ktxTexture2_DeflateZstd(kTexture, 10));
 
     char writer[100];
     snprintf(writer, sizeof(writer), "%s version %s", "SeeleEngine", "0.0.1");

src/Editor/main.cpp

@@ -124,10 +124,10 @@ int main() {
             .filePath = sourcePath / "import/models/rttest.glb",
             .importPath = "",
         });
-        //AssetImporter::importMesh(MeshImportArgs{
-        //    .filePath = sourcePath / "import/models/main1_sponza/sponza.gltf",
-        //    .importPath = "sponza",
-        //});
+        AssetImporter::importMesh(MeshImportArgs{
+            .filePath = sourcePath / "import/models/main1_sponza/sponza.gltf",
+            .importPath = "sponza",
+        });
         // AssetImporter::importMesh(MeshImportArgs{
         //     .filePath = sourcePath / "import/models/town_hall.glb",
         //     .importPath = "",