Add basic functionality to draw instances

Allows creation of instances of meshes and drawing all of them with
single draw call. Instances can have their own transformation data
(location, rotation and scale).

graphics/src/rse_graphics.cpp

@@ -2,6 +2,8 @@
 #include "window.hpp"
 #include "vulkan_base.hpp"
 
+#include "mesh_controller.hpp"
+#include "vulkan_commons.hpp"
 namespace rse::graphics
 {
 
@@ -26,11 +28,34 @@ RseGraphics::RseGraphics()
     };
 }
 
+
 uint8_t RseGraphics::graphics_run(void)
 {
 
     window::windowInit();
 
+    // FIXME: Temporary array of vertices, for testing purposes
+    const std::vector<rse::graphics::vulkanbase::Vertex> vertices = {{{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 1.0f}},
+                                        {{0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 1.0f}},
+                                        {{0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}},
+                                        {{-0.5f, 0.5f, 0.0f}, {1.0f, 0.0f, 1.0f}}};
+
+    // FIXME: Temporary array of vertices, for testing purposes
+    std::vector<uint16_t> indices = {0, 1, 2, 2, 3, 0};
+
+    uint16_t mesh_id = rse::graphics::mesh::create_mesh(vertices, indices);
+    rse::graphics::mesh::create_mesh_instance(mesh_id, rse::graphics::mesh::InstanceData(
+        glm::vec3(0.0f, 0.0f, 0.0f),
+        glm::vec3(0.0f, 0.0f, glm::radians(45.0f)),
+        1.0f
+    ));
+
+    rse::graphics::mesh::create_mesh_instance(mesh_id, rse::graphics::mesh::InstanceData(
+        glm::vec3(-1.0f, 0.0f, 0.0f),
+        glm::vec3(0.0f, 0.0f, 0.0f),
+        1.0f
+    ));
+
     if (0 != vulkanbase::initVulkan(vulkan_state))
         return -1;