save code

Command.cpp

@@ -0,0 +1,66 @@
+#include "HelloTriangleApplication.h"
+
+void HelloTriangleApplication::createCommandPool()
+{
+    QueueFamilyIndices queueFamilyIndices = findQueueFamilies(physicalDevice);
+
+    VkCommandPoolCreateInfo poolInfo{};
+    poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+    poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily.value();
+
+    if (vkCreateCommandPool(device, &poolInfo, nullptr, &commandPool) != VK_SUCCESS)
+    {
+        throw std::runtime_error("failed to create graphics command pool!");
+    }
+}
+
+void HelloTriangleApplication::createCommandBuffers()
+{
+    commandBuffers.resize(swapChainFramebuffers.size());
+
+    VkCommandBufferAllocateInfo allocInfo{};
+    allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+    allocInfo.commandPool = commandPool;
+    allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+    allocInfo.commandBufferCount = (uint32_t)commandBuffers.size();
+
+    if (vkAllocateCommandBuffers(device, &allocInfo, commandBuffers.data()) != VK_SUCCESS)
+    {
+        throw std::runtime_error("failed to allocate command buffers!");
+    }
+
+    for (size_t i = 0; i < commandBuffers.size(); i++)
+    {
+        VkCommandBufferBeginInfo beginInfo{};
+        beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+
+        if (vkBeginCommandBuffer(commandBuffers[i], &beginInfo) != VK_SUCCESS)
+        {
+            throw std::runtime_error("failed to begin recording command buffer!");
+        }
+
+        VkRenderPassBeginInfo renderPassInfo{};
+        renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+        renderPassInfo.renderPass = renderPass;
+        renderPassInfo.framebuffer = swapChainFramebuffers[i];
+        renderPassInfo.renderArea.offset = {0, 0};
+        renderPassInfo.renderArea.extent = swapChainExtent;
+
+        VkClearValue clearColor = {{{0.0f, 0.0f, 0.0f, 1.0f}}};
+        renderPassInfo.clearValueCount = 1;
+        renderPassInfo.pClearValues = &clearColor;
+
+        vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
+
+        vkCmdBindPipeline(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphicsPipeline);
+
+        vkCmdDraw(commandBuffers[i], 3, 1, 0, 0);
+
+        vkCmdEndRenderPass(commandBuffers[i]);
+
+        if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS)
+        {
+            throw std::runtime_error("failed to record command buffer!");
+        }
+    }
+}