skip not used materials

engine/src/renderer/3d/mesh/mesh.cpp

@@ -20,7 +20,15 @@ Mesh::Mesh(const MeshBuilderData& data) {
               "Materials count must be greater than 0");
 
   for (u32 i = 0; i < data.materials.size(); i++) {
-    materials.push_back(new MeshMaterial(data, i));
+    auto* material = new MeshMaterial(data, i);
+
+    if (material->frames.size() == 0) {
+      TYRA_WARN("Found empty material: ", material->name, ". Skipping...");
+      delete material;
+      continue;
+    }
+
+    materials.push_back(material);
   }
 
   isMother = true;

engine/src/renderer/3d/mesh/mesh_material.cpp

@@ -45,14 +45,22 @@ MeshMaterial::MeshMaterial(const MeshBuilderData& data,
   u32 lastVertexCount = 0;
 
   for (u32 i = 0; i < material->frames.size(); i++) {
-    frames.push_back(new MeshMaterialFrame(data, i, materialIndex));
+    if (material->frames[i]->count > 0) {
+      frames.push_back(new MeshMaterialFrame(data, i, materialIndex));
 
-    if (i > 0) {
-      TYRA_ASSERT(frames[i]->count == lastVertexCount,
-                  "Vertex count must be the same for all frames");
+      if (i > 0) {
+        TYRA_ASSERT(frames[i]->count == lastVertexCount,
+                    "Vertex count must be the same for all frames");
+      }
+
+      lastVertexCount = frames[i]->count;
+    } else {  // We will not use it, lets clean it up
+      auto* frame = material->frames[i];
+      if (frame->vertices != nullptr) delete[] frame->vertices;
+      if (frame->normals != nullptr) delete[] frame->normals;
+      if (frame->textureCoords != nullptr) delete[] frame->textureCoords;
+      if (frame->colors != nullptr) delete[] frame->colors;
     }
-
-    lastVertexCount = frames[i]->count;
   }
 
   isMother = true;

engine/src/renderer/3d/mesh/mesh_material_frame.cpp

@@ -21,17 +21,20 @@ namespace Tyra {
 MeshMaterialFrame::MeshMaterialFrame(const MeshBuilderData& data,
                                      const u32& frameIndex,
                                      const u32& materialIndex) {
+  auto* material = data.materials[materialIndex];
+
   TYRA_ASSERT(materialIndex < data.materials.size(), "Provided index \"",
               materialIndex, "\" is out of range");
 
-  TYRA_ASSERT(frameIndex < data.materials[materialIndex]->frames.size(),
-              "Provided index \"", frameIndex, "\" is out of range");
+  TYRA_ASSERT(frameIndex < material->frames.size(), "Provided index \"",
+              frameIndex, "\" is out of range");
 
   id = rand() % 1000000;
 
-  auto* frame = data.materials[materialIndex]->frames[frameIndex];
+  auto* frame = material->frames[frameIndex];
 
-  TYRA_ASSERT(frame->count > 0, "Vertex count must be greater than 0");
+  TYRA_ASSERT(frame->count > 0, "Vertex count must be greater than 0",
+              "Material name: ", material->name);
   TYRA_ASSERT(frame->vertices != nullptr, "Vertex array can't be null");
   TYRA_ASSERT(!data.normalsEnabled || frame->normals != nullptr,
               "Normal array can't be null");