From 7b1d83753f87f6fad8bf0931447b1d0984010dd4 Mon Sep 17 00:00:00 2001
From: InkSoul <qingci30@163.com>
Date: Mon, 4 Mar 2024 00:08:40 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E6=88=90render=20pass=20=E5=88=9B?=
 =?UTF-8?q?=E5=BB=BA?=
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---
 VulkanTutorial.cpp | 42 +++++++++++++++++++++++++++++++++++++++++-
 VulkanTutorial.h   |  2 ++
 2 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/VulkanTutorial.cpp b/VulkanTutorial.cpp
index 55b7fa8..cb3dc3e 100644
--- a/VulkanTutorial.cpp
+++ b/VulkanTutorial.cpp
@@ -112,6 +112,7 @@ void HelloTriangleApplication::initVulkan() {
 
 	creatImageView();
 
+	createRenderPass();
 	createGraphicPipeline();
 }
 
@@ -130,9 +131,10 @@ void HelloTriangleApplication::mainLoop(GLFWwindow* window){
 
 void HelloTriangleApplication::cleanup(GLFWwindow* window) {
 
-	std::cout << "start to destroy resource" << std::endl;
+	std::cout << "\nstart to destroy resource\n" << std::endl;
 
 	vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
+	vkDestroyRenderPass(device, renderPass, nullptr);
 
 	for (auto imageView : swapChainImageViews)
 	{
@@ -603,6 +605,44 @@ VkShaderModule HelloTriangleApplication::createShaderModule(const std::vector<ch
 }
 
 
+void HelloTriangleApplication::createRenderPass()
+{
+	VkAttachmentDescription colorAttachment{};
+	colorAttachment.format = swapChainImageFormat;
+	colorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
+	//颜色和深度数据
+	colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; // 开始时清除附件数据
+	colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;// 存储渲染内容到内存
+	//stencil数据
+	colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;// just dont care
+	colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+
+	colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;// render pass 开始前图形具有的布局
+	colorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;// render pass 完成时自动转换到的布局，此处为准备用交换链进行呈现
+
+	VkAttachmentReference colorAttachmentRef{};
+	colorAttachmentRef.attachment = 0;
+	colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+
+	VkSubpassDescription subpass{};
+	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+	subpass.colorAttachmentCount = 1;
+	subpass.pColorAttachments = &colorAttachmentRef;
+
+	VkRenderPassCreateInfo renderPassInfo{};
+	renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+	renderPassInfo.attachmentCount = 1;
+	renderPassInfo.pAttachments = &colorAttachment;
+	renderPassInfo.subpassCount = 1;
+	renderPassInfo.pSubpasses = &subpass;
+
+	if (vkCreateRenderPass(device,&renderPassInfo,nullptr,&renderPass) != VK_SUCCESS)
+	{
+		throw std::runtime_error("failed to create render pass in createRenderPass");
+	}
+
+}
+
 void HelloTriangleApplication::createGraphicPipeline()
 {
 	auto vertShaderCode = readFile("../../../shaders/triangleVert.spv");
diff --git a/VulkanTutorial.h b/VulkanTutorial.h
index 1189014..d49b886 100644
--- a/VulkanTutorial.h
+++ b/VulkanTutorial.h
@@ -63,6 +63,7 @@ private:
 
 	std::vector<VkImageView> swapChainImageViews;
 
+	VkRenderPass renderPass;
 	VkPipelineLayout pipelineLayout;
 
 	struct QueueFamilyIndices
@@ -128,6 +129,7 @@ private:
 
 	void creatImageView();
 
+	void createRenderPass();
 	void createGraphicPipeline();
 
 	static std::vector<char> readFile(const std::string& filename);