Added models

src/main.cpp

@@ -1,6 +1,7 @@
 //========== Includes ==========
 // General includes
 #include <cstring>
+#include <functional>
 #include <iostream>
 #include <array>
 #include <algorithm> // std::clamp
@@ -16,6 +17,7 @@
 #include <vector>
 #include <stdexcept>
 #include <cstdlib>
+#include <unordered_map>
 // Vulkan Includes
 #include "vulkan/vulkan.hpp"
 #include <vulkan/vulkan_core.h>
@@ -32,6 +34,8 @@ import vulkan_hpp;
 #define GLM_FORCE_DEPTH_ZERO_TO_ONE
 #include <glm/glm.hpp>
 #include <glm/gtc/matrix_transform.hpp>
+#define GLM_ENABLE_EXPERIMENTAL
+#include <glm/gtx/hash.hpp>
 #include <chrono>
 // Images
 #define STB_IMAGE_IMPLEMENTATION
@@ -74,6 +78,18 @@ struct Vertex {
       vk::VertexInputAttributeDescription( 2, 0, vk::Format::eR32G32Sfloat, offsetof(Vertex, texCoord) )
     };
   }
+
+  bool operator==(const Vertex& other) const {
+    return pos == other.pos && color == other.color && texCoord == other.texCoord;
+  }
+};
+
+template <> struct std::hash<Vertex> {
+  size_t operator() (Vertex const& vertex) const noexcept {
+    return ((hash<glm::vec3>() (vertex.pos) ^
+            (hash<glm::vec3>() (vertex.color) << 1 )) >> 1) ^
+            (hash<glm::vec2>() (vertex.texCoord) << 1 );
+  }
 };
 
 /*
@@ -95,8 +111,6 @@ const std::vector<uint16_t> indices = {
 };
 */
 
-
-
 //Uniform buffer
 struct UniformBufferObject {
   glm::mat4 model;
@@ -832,9 +846,11 @@ class HelloTriangleApplication {
       throw std::runtime_error(warn + err);
     }
 
+    std::unordered_map<Vertex, uint32_t> uniqueVertices{};
+
     for (const auto& shape : shapes) {
       for (const auto& index : shape.mesh.indices) {
-        Vertex  vertex;
+        Vertex  vertex{};
 
         vertex.pos = {
           attrib.vertices[3 * index.vertex_index + 0],
@@ -849,13 +865,18 @@ class HelloTriangleApplication {
 
         vertex.color = {1.0f, 1.0f, 1.0f};
 
+        if (uniqueVertices.count(vertex) == 0) {
+          uniqueVertices[vertex] = static_cast<uint32_t>(vertices.size());
           vertices.push_back(vertex);
-        indices.push_back(indices.size());
+        }
+
+        indices.push_back(uniqueVertices[vertex]);
       }
     }
 
     #ifndef NDEBUG
     std::cout << "3D model loaded !\n";
+    std::cout << "3D model has " << vertices.size() << " vertices and " << indices.size() << " index \n";
     #endif
   }
 
@@ -1274,7 +1295,7 @@ class HelloTriangleApplication {
     float time              = std::chrono::duration<float, std::chrono::seconds::period>(currentTime - startTime).count();
 
     UniformBufferObject ubo {};
-    ubo.model = rotate(glm::mat4(1.0f), time * glm::radians(90.0f), glm::vec3(0.0f, 0.0f, 1.0f));
+    ubo.model = rotate(glm::mat4(1.0f), time/10 * glm::radians(90.0f), glm::vec3(0.0f, 0.0f, 1.0f));
     ubo.view = lookAt(glm::vec3(2.0f, 2.0f, 2.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 0.0f, 1.0f));
     ubo.proj = glm::perspective(glm::radians(45.0f), static_cast<float>(swapChainExtent.width) / static_cast<float>(swapChainExtent.height), 0.1f, 10.0f);
     ubo.proj[1][1] *= -1;