CommandManager.cpp

#include "CommandManager.hpp"

void CommandManager::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(deviceManager.getDevice(), &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;
		beginInfo.flags = 0; // Optional
		beginInfo.pInheritanceInfo = nullptr; // Optional

		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 = renderpassManager.getRenderPass();
		renderPassInfo.framebuffer = swapChainFramebuffers[i];
		
		renderPassInfo.renderArea.offset = {0, 0};
		renderPassInfo.renderArea.extent = swapchainManager.getSwapChainExtent();
		
		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, graphicsPipelineManager.getGraphicsPipeline());
		VkBuffer vertexBuffers[] = {vertexManager.getVertexBuffer()};
		VkDeviceSize offsets[] = {0};
		vkCmdBindVertexBuffers(commandBuffers[i], 0, 1, vertexBuffers, offsets);
		vkCmdBindIndexBuffer(commandBuffers[i], vertexManager.getIndexBuffer(), 0, VK_INDEX_TYPE_UINT16);
		vkCmdBindDescriptorSets(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphicsPipelineManager.getPipelineLayout(), 0, 1, &(descriptorManager.getDescriptorSets()[i]), 0, nullptr);
		vkCmdDrawIndexed(commandBuffers[i], static_cast<uint32_t>(vertexManager.getIndices().size()), 1, 0, 0, 0);
		vkCmdEndRenderPass(commandBuffers[i]);
		
		if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS) {
			throw std::runtime_error("Failed to record command buffer!");
		}
	}
}
void CommandManager::createCommandPool() {
	QueueFamilyIndices queueFamilyIndices = deviceManager.findQueueFamilies(deviceManager.getPhysicalDevice());

	VkCommandPoolCreateInfo poolInfo = {};
	poolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
	poolInfo.queueFamilyIndex = queueFamilyIndices.graphicsFamily.value();
	poolInfo.flags = 0; // Optional
	if (vkCreateCommandPool(deviceManager.getDevice(), &poolInfo, nullptr, &commandPool) != VK_SUCCESS) {
		throw std::runtime_error("Failed to create command pool!");
	}
}