Implemented Maximal MSAA

CMakeLists.txt

@@ -7,9 +7,55 @@ set(GLFW_USE_WAYLAND ON)
 find_package(Vulkan REQUIRED)
 find_package(glfw3 3.3 REQUIRED)
 
+find_program(GLSLC glslc)
+if(NOT GLSLC)
+    message(FATAL_ERROR "glslc compiler not found. Please install the Vulkan SDK.")
+endif()
+
+# Copy textures into cmake output
+file(GLOB TEXTURE_FILES
+        "${CMAKE_CURRENT_SOURCE_DIR}/textures/*"
+)
+foreach(TEXTURE ${TEXTURE_FILES})
+    file(COPY ${TEXTURE_FILES} DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/textures/")
+endforeach()
+
+# Copy models into cmake output
+file(GLOB MODEL_FILES
+        "${CMAKE_CURRENT_SOURCE_DIR}/models/*"
+)
+foreach(MODEL ${MODEL_FILES})
+    file(COPY ${MODEL_FILES} DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/models/")
+endforeach()
+
+# Copy shaders into cmake output
+file(GLOB SHADER_FILES
+        "${CMAKE_CURRENT_SOURCE_DIR}/shaders/*.vert"
+        "${CMAKE_CURRENT_SOURCE_DIR}/shaders/*.frag"
+)
+
+foreach(SHADER ${SHADER_FILES})
+    get_filename_component(SHADER_NAME ${SHADER} NAME)
+    set(SPIRV "${CMAKE_CURRENT_BINARY_DIR}/shaders/${SHADER_NAME}.spv")
+
+    add_custom_command(
+            OUTPUT ${SPIRV}
+            COMMAND ${GLSLC} ${SHADER} -o ${SPIRV}
+            DEPENDS ${SHADER}
+            COMMENT "Compiling ${SHADER_NAME}"
+    )
+
+    list(APPEND SPIRV_SHADERS ${SPIRV})
+endforeach()
+
+add_custom_target(compile_shaders ALL DEPENDS ${SPIRV_SHADERS})
+
 add_executable(vulkan_test
         main.cpp
         vulkan/vulkan_app.cpp
-        vulkan/vulkan_app.hpp)
+        vulkan/vulkan_app.hpp
+)
 
 target_link_libraries(vulkan_test PRIVATE Vulkan::Vulkan glfw)
+
+add_dependencies(vulkan_test compile_shaders)

README.md

@@ -1,3 +1,3 @@
 # Vulkan_TestApp
 
-Triangle Test App with Vulkan API strictly following documentation. 
+Test App with Vulkan API strictly following documentation. 

main.cpp

@@ -1,12 +1,25 @@
-#define DEBUG
+/**
+ * Required external Libraries:
+ * - Vulkan
+ * - glfw
+ * - glm
+ * - stb
+ * - tinyobjloader
+ */
+
+#define DEBUG 1
 
-#include <iostream>
 #include "vulkan/vulkan_app.hpp"
 
-int main(){
+int main(int argc, char **argv){
+    std::cout << "Program path: " << argv[0] << std::endl;
     try{
         vapp::Vulkan app;
-        app.run("Vulkan", 1200, 900);
+
+        app.MODEL_PATH = "models/viking_room.obj";
+        app.TEXTURE_PATH = "textures/viking_room.png";
+
+        app.run("Vulkan", 800, 800);
     }
     catch(const std::exception& e){
         std::cerr << e.what() << std::endl;

shaders/compile.sh

@@ -1,2 +1,2 @@
-glslc shader.vert -o vert.spv
-glslc shader.frag -o frag.spv
+glslc shader.vert -o shader.vert.spv
+glslc shader.frag -o shader.frag.spv

shaders/shader.frag

@@ -1,9 +1,13 @@
 #version 450
 
 layout(location = 0) in vec3 fragColor;
+layout(location = 1) in vec2 fragTexCoord;
 
 layout(location = 0) out vec4 outColor;
 
+layout(binding = 1) uniform sampler2D texSampler;
+
 void main(){
-    outColor = vec4(fragColor, 1.0);
+    // outColor = vec4(fragTexCoord, 0.0, 1.0);
+    outColor = texture(texSampler, fragTexCoord);
 }

shaders/shader.vert

@@ -1,20 +1,20 @@
 #version 450
 
+layout(set = 0, binding = 0) uniform UniformBufferObject{
+    mat4 model;
+    mat4 view;
+    mat4 proj;
+}ubo;
+
+layout(location = 0) in vec3 inPosition;
+layout(location = 1) in vec3 inColor;
+layout(location = 2) in vec2 inTexCoord;
+
 layout(location = 0) out vec3 fragColor;
-
-vec2 positions[3] = vec2[](
-    vec2(0.0, -0.5),
-    vec2(0.5, 0.5),
-    vec2(-0.5, 0.5)
-);
-
-vec3 colors[3] = vec3[](
-    vec3(1.0, 0.0, 0.0),
-    vec3(0.0, 1.0, 0.0),
-    vec3(0.0, 0.0, 1.0)
-);
+layout(location = 1) out vec2 fragTexCoord;
 
 void main(){
-    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
-    fragColor = colors[gl_VertexIndex];
+    gl_Position = ubo.proj * ubo.view * ubo.model * vec4(inPosition, 1.0);
+    fragColor = inColor;
+    fragTexCoord = inTexCoord;
 }

vulkan/vulkan_app.hpp

@@ -8,43 +8,119 @@
 #define GLFW_INCLUDE_VULKAN
 #include <GLFW/glfw3.h>
 
+#define GLM_FORCE_RADIANS
+#define GLM_FORCE_DEFAULT_ALIGNED_GENTYPES
+#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 <iostream>
-#include <stdexcept>
-#include <cstdlib>
 #include <cstring>
 #include <cstdint>
 #include <vector>
 #include <optional>
 #include <set>
-#include <limits>
-#include <algorithm>
 #include <fstream>
+#include <array>
+#include <chrono>
+#include <unordered_map>
 
 namespace vapp{
-
     // Change here for other presentMode
     const VkPresentModeKHR WISHED_PRESENT_MODE = VK_PRESENT_MODE_MAILBOX_KHR;
 
-typedef struct _QueueFamilyIndices{
+    struct Vertex{
+        glm::vec3 pos;
+        glm::vec3 color;
+        glm::vec2 texCoord;
+
+        static VkVertexInputBindingDescription getBindingDescription(){
+            VkVertexInputBindingDescription bindingDescription{};
+
+            bindingDescription.binding = 0;
+            bindingDescription.stride = sizeof(Vertex);
+            bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
+
+            return bindingDescription;
+        }
+
+        static std::array<VkVertexInputAttributeDescription, 3> getAttributeDescriptions(){
+            std::array<VkVertexInputAttributeDescription, 3> attributeDescriptions{};
+
+            attributeDescriptions[0].binding = 0;
+            attributeDescriptions[0].location = 0;
+            attributeDescriptions[0].format = VK_FORMAT_R32G32B32_SFLOAT;
+            attributeDescriptions[0].offset = offsetof(Vertex, pos);
+
+            attributeDescriptions[1].binding = 0;
+            attributeDescriptions[1].location = 1;
+            attributeDescriptions[1].format = VK_FORMAT_R32G32B32_SFLOAT;
+            attributeDescriptions[1].offset = offsetof(Vertex, color);
+
+            attributeDescriptions[2].binding = 0;
+            attributeDescriptions[2].location = 2;
+            attributeDescriptions[2].format = VK_FORMAT_R32G32_SFLOAT;
+            attributeDescriptions[2].offset = offsetof(Vertex, texCoord);
+
+            return attributeDescriptions;
+        }
+
+        bool operator==(const Vertex &other) const{
+            return pos == other.pos && color == other.color && texCoord == other.texCoord;
+        }
+    };
+
+    /*
+    const std::vector<Vertex> vertices = {
+        {{-0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {0.0f, 0.0f}},
+        {{0.5f, -0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
+        {{0.5f, 0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
+        {{-0.5f, 0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}},
+
+        {{-0.5f, -0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}, {0.0f, 0.0f}},
+        {{0.5f, -0.5f, -0.5f}, {0.0f, 0.0f, 1.0f}, {1.0f, 0.0f}},
+        {{0.5f, 0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}, {1.0f, 1.0f}},
+        {{-0.5f, 0.5f, -0.5f}, {1.0f, 0.0f, 0.0f}, {0.0f, 1.0f}}
+    };
+
+    // uint16_t also possible -> change in vkCmdBindIndexBuffer also
+    const std::vector<uint32_t> indices = {
+        0, 1, 2, 2, 3, 0,
+        4, 5, 6, 6, 7, 4
+    };
+    */
+    // END Remove
+
+    struct UniformBufferObject{
+        alignas(16) glm::mat4 model;
+        alignas(16) glm::mat4 view;
+        alignas(16) glm::mat4 proj;
+    };
+
+    struct QueueFamilyIndices{
         std::optional<uint32_t> graphicsFamily;
         std::optional<uint32_t> presentFamily;
 
         bool isComplete(){
             return graphicsFamily.has_value();
         }
-} QueueFamilyIndices;
+    };
 
-typedef struct{
+    struct SwapChainSupportDetails{
         VkSurfaceCapabilitiesKHR capabilities;
         std::vector<VkSurfaceFormatKHR> formats;
         std::vector<VkPresentModeKHR> presentModes;
-} SwapChainSupportDetails;
+    };
 
     static std::vector<char> readFile(const std::string& filename);
+    static std::array<VkVertexInputAttributeDescription, 2> getAttributeDescription();
+
 
     class Vulkan{
     private:
-#pragma region Fields
+#pragma region PrivateFields
         GLFWwindow *window;
         uint32_t _width, _height;
 
@@ -67,21 +143,55 @@ private:
         std::vector<VkImageView> swapChainImageViews;
 
         VkRenderPass renderPass;
+        VkDescriptorSetLayout descriptorSetLayout;
         VkPipelineLayout pipelineLayout;
 
         VkPipeline graphicsPipeline;
 
         VkCommandPool commandPool;
-    VkCommandBuffer commandBuffer;
+        std::vector<VkCommandBuffer> commandBuffers;
 
-    VkSemaphore imageAvailableSemaphore, renderFinishedSemaphore;
-    VkFence inFlightFence;
+        std::vector<VkSemaphore> imageAvailableSemaphores, renderFinishedSemaphores;
+        std::vector<VkFence> inFlightFences;
 
         std::vector<VkFramebuffer> swapChainFramebuffers;
-#pragma endregion
 
+        const int MAX_FRAMES_IN_FLIGHT = 2;
+        uint32_t currentFrame = 0;
+
+        std::vector<Vertex> vertices;
+        std::vector<uint32_t> indices;
+        VkBuffer vertexBuffer;
+        VkDeviceMemory vertexBufferMemory;
+        VkBuffer indexBuffer;
+        VkDeviceMemory indexBufferMemory;
+
+        std::vector<VkBuffer> uniformBuffers;
+        std::vector<VkDeviceMemory> uniformBuffersMemory;
+        std::vector<void*> uniformBuffersMapped;
+
+        VkDescriptorPool descriptorPool;
+        std::vector<VkDescriptorSet> descriptorSets;
+
+        int32_t mipLevels;
+        VkImage textureImage;
+        VkDeviceMemory textureImageMemory;
+
+        VkImageView textureImageView;
+        VkSampler textureSampler;
+
+        VkImage depthImage;
+        VkDeviceMemory depthImageMemory;
+        VkImageView depthImageView;
+
+        VkImage colorImage;
+        VkDeviceMemory colorImageMemory;
+        VkImageView colorImageView;
+#pragma endregion
+#pragma region PrivateFunctions
         bool checkValidationLayerSupport();
         std::vector<const char*> getRequiredExtensions();
+        VkSampleCountFlagBits getMaxUsableSampleCount();
 
         void createInstance();
         void setupDebugMessenger();
@@ -97,29 +207,76 @@ private:
         VkExtent2D chooseSwapExtent(const VkSurfaceCapabilitiesKHR& capabilities);
         void createSwapChain();
         void createImageViews();
+        void createDescriptorSetLayout();
         void createGraphicsPipeline();
         VkShaderModule createShaderModule(const std::vector<char>& code);
         void createRenderPass();
-    void createFrameBuffers();
+        void createFramebuffers();
         void createCommandPool();
-    void createCommandBuffer();
+        VkFormat findSupportedFormat(const std::vector<VkFormat> &candidates, VkImageTiling tiling, VkFormatFeatureFlags features);
+        VkFormat findDepthFormat();
+        void createColorResources();
+        void createDepthResources();
+        VkCommandBuffer beginSingleTimeCommands();
+        void endSingleTimeCommands(VkCommandBuffer commandBuffer);
+        void transitionImageLayout(VkImage image, VkFormat format, VkImageLayout oldLayout, VkImageLayout newLayout, uint32_t mipLevels);
+        void copyBufferToImage(VkBuffer buffer, VkImage image, uint32_t width, uint32_t height);
+        void createImage(uint32_t width, uint32_t height, uint32_t mipLevels, VkSampleCountFlagBits numSamples, VkFormat format, VkImageTiling tiling, VkImageUsageFlags usage, VkMemoryPropertyFlags properties, VkImage& image, VkDeviceMemory &imageMemory);
+        void generateMipmaps(VkImage image, VkFormat imageFormat, int32_t texWidth, int32_t texHeight, uint32_t mipLevels);
+        void createTextureImage();
+        VkImageView createImageView(VkImage image, VkFormat format, VkImageAspectFlags aspectFlags, uint32_t mipLevels);
+        void createTextureImageView();
+        void createTextureSampler();
+        uint32_t findMemoryType(uint32_t typeFilter, VkMemoryPropertyFlags properties);
+        void createBuffer(VkDeviceSize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags properties, VkBuffer &buffer, VkDeviceMemory &bufferMemory);
+        void copyBuffer(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize size);
+        void copyBufferOld(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize size);
+        void loadModel();
+        void createVertexBuffer();
+        void createIndexBuffer();
+        void createUniformBuffers();
+        void createDescriptorPool();
+        void createDescriptorSets();
+        void createCommandBuffers();
         void recordCommandBuffer(VkCommandBuffer commandBuffer, uint32_t imageIndex);
         void createSyncObjects();
+        void updateUniformBuffer(uint32_t currentFrame);
         void drawFrame();
+        void cleanupSwapChain();
+        void recreateSwapChain();
         void initWindow(const char *windowName);
         void initVulkan();
         void mainLoop();
         void cleanup();
-
+#pragma endregion
     public:
+#pragma region PublicFields
 #ifdef DEBUG
         const bool enableValidationLayers = true;
 #else
         const bool enableValidationLayers = false;
 #endif
 
+        bool framebufferResized = false;
+        std::string MODEL_PATH;
+        std::string TEXTURE_PATH;
+
+        VkSampleCountFlagBits msaaSamples = VK_SAMPLE_COUNT_1_BIT;
+#pragma endregion
+#pragma region PublicFunctions
         void run(const char *windowName, const uint32_t width = 800, const uint32_t height = 600);
+#pragma endregion
     };
 } // vapp
 
+namespace std{
+    template<> struct hash<vapp::Vertex>{
+        size_t operator()(vapp::Vertex const &vertex) const{
+            return ((hash<glm::vec3>()(vertex.pos) ^
+                    (hash<glm::vec3>()(vertex.color) << 1)) >> 1) ^
+                    (hash<glm::vec2>()(vertex.texCoord) << 1);
+        }
+    };
+}
+
 #endif //VULKAN_APP_H