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diff --git a/src/blu_cat/gra/device.hpp b/src/blu_cat/gra/device.hpp
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+++ b/src/blu_cat/gra/device.hpp
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+/*
+ * Copyright 2022-2024 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef BLU_CAT_GRA_DEVICE_H
+#define BLU_CAT_GRA_DEVICE_H 1
+
+#include <cstdlib>
+#include <vector>
+
+#include "vulkan.hpp"
+#include "queue_family.hpp"
+
+namespace BluCat::GRA
+{
+
+struct Device
+{
+  uint32_t queue_families_count;
+  QueueFamily *queue_families;
+  std::vector<QueueFamily*> queue_families_with_graphics;
+  std::vector<QueueFamily*> queue_families_with_presentation;
+
+public:
+  VkDevice device;
+  VkPhysicalDevice physical_device;
+
+  VkShaderModule vert_sprite_3d_shader_module;
+  VkShaderModule frag_sprite_3d_shader_module;
+  VkShaderModule vert3d_shader_module;
+  VkShaderModule vert3d_skeletal_shader_module;
+  VkShaderModule frag3d_shader_module;
+  VkShaderModule vert2d_solid_shader_module;
+  VkShaderModule frag2d_solid_shader_module;
+  VkShaderModule vert2d_wired_shader_module;
+  VkShaderModule frag2d_wired_shader_module;
+
+  bool with_swapchain;
+
+  Device(VkPhysicalDevice vk_physical_device, bool with_swapchain);
+  ~Device();
+
+  bool
+  select_memory_type(
+    uint32_t *memoryTypeIndex, VkMemoryRequirements *vk_memory_requirements,
+    VkMemoryPropertyFlags vk_property_flags);
+
+  QueueFamily*
+  get_queue_family_with_graphics() const;
+
+  QueueFamily*
+  get_queue_family_with_presentation() const;
+};
+
+}
+
+#endif /* BLU_CAT_GRA_DEVICE_H */