create frame buffers

Author: Piasy

app/src/main/cpp/vulkan_triangle.cpp

@@ -223,13 +223,18 @@ void HelloTriangleApplication::initVulkan() {
     createImageViews();
     createRenderPass();
     createGraphicsPipeline();
+    createFramebuffers();
 }
 
 void HelloTriangleApplication::mainLoop() {
 
 }
 
 void HelloTriangleApplication::cleanUp() {
+    for (size_t i = 0; i < swapchainFramebuffers.size(); i++) {
+        vkDestroyFramebuffer(device, swapchainFramebuffers[i], nullptr);
+    }
+
     vkDestroyPipeline(device, graphicsPipeline, nullptr);
     vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
     vkDestroyRenderPass(device, renderPass, nullptr);
@@ -606,6 +611,30 @@ void HelloTriangleApplication::createGraphicsPipeline() {
     vkDestroyShaderModule(device, fragmentShaderModule, nullptr);
 }
 
+void HelloTriangleApplication::createFramebuffers() {
+    swapchainFramebuffers.resize(swapchainImageViews.size());
+
+    for (size_t i = 0; i < swapchainImageViews.size(); i++) {
+        VkImageView attachments[] = {
+                swapchainImageViews[i]
+        };
+
+        VkFramebufferCreateInfo framebufferInfo = {};
+        framebufferInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+        framebufferInfo.renderPass = renderPass;
+        framebufferInfo.attachmentCount = 1;
+        framebufferInfo.pAttachments = attachments;
+        framebufferInfo.width = swapchainExtent.width;
+        framebufferInfo.height = swapchainExtent.height;
+        framebufferInfo.layers = 1;
+
+        if (vkCreateFramebuffer(device, &framebufferInfo, nullptr, &swapchainFramebuffers[i])
+            != VK_SUCCESS) {
+            throw std::runtime_error("failed to create framebuffer!");
+        }
+    }
+}
+
 std::vector<char> HelloTriangleApplication::readAsset(const char *name) {
     AAsset *file = AAssetManager_open(assetManager, name, AASSET_MODE_BUFFER);
     size_t len = AAsset_getLength(file);

app/src/main/cpp/vulkan_triangle.h

@@ -51,6 +51,10 @@ class HelloTriangleApplication {
 
     void initVulkan();
 
+    void mainLoop();
+
+    void cleanUp();
+
     void createInstance();
 
     void setUpDebugCallback();
@@ -69,6 +73,8 @@ class HelloTriangleApplication {
 
     void createGraphicsPipeline();
 
+    void createFramebuffers();
+
     std::vector<char> readAsset(const char *name);
 
     VkShaderModule createShaderModule(const std::vector<char> &code);
@@ -81,10 +87,6 @@ class HelloTriangleApplication {
 
     SwapchainSupportDetails querySwapchainSupport(VkPhysicalDevice device);
 
-    void mainLoop();
-
-    void cleanUp();
-
     AAssetManager *assetManager;
     const char *vertexShader;
     const char *fragmentShader;
@@ -100,6 +102,7 @@ class HelloTriangleApplication {
     VkSwapchainKHR swapchain;
     std::vector<VkImage> swapchainImages;
     std::vector<VkImageView> swapchainImageViews;
+    std::vector<VkFramebuffer> swapchainFramebuffers;
     VkFormat swapchainImageFormat;
     VkExtent2D swapchainExtent;
     VkRenderPass renderPass;