Started working on multiview example
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683
examples/multiview/multiview.cpp
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683
examples/multiview/multiview.cpp
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/*
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* Vulkan Example - Multiview (VK_KHR_multiview)
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*
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* VK_KHR_multiview allows rendering to multiple views of a single renderpass
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*
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* Copyright (C) 2018 by Sascha Willems - www.saschawillems.de
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*
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <vector>
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#define GLM_FORCE_RADIANS
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#define GLM_FORCE_DEPTH_ZERO_TO_ONE
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include <vulkan/vulkan.h>
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#include "vulkanexamplebase.h"
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#include "VulkanModel.hpp"
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#define ENABLE_VALIDATION false
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//#define VULKAN_1_1
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class VulkanExample : public VulkanExampleBase
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{
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public:
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// Vertex layout for the models
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vks::VertexLayout vertexLayout = vks::VertexLayout({
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vks::VERTEX_COMPONENT_POSITION,
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vks::VERTEX_COMPONENT_NORMAL,
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vks::VERTEX_COMPONENT_COLOR,
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});
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struct ColorAttachment {
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VkImage image;
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VkImageView view;
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VkDeviceMemory memory;
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} colorAttachment;
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vks::Model scene;
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struct UBOGS {
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glm::mat4 projection[2];
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glm::mat4 modelview[2];
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glm::vec4 lightPos = glm::vec4(-2.5f, -3.5f, 0.0f, 1.0f);
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} uboGS;
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vks::Buffer uniformBufferGS;
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VkPipeline pipeline;
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VkPipelineLayout pipelineLayout;
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VkDescriptorSet descriptorSet;
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VkDescriptorSetLayout descriptorSetLayout;
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// Semaphore used to synchronize blit to swapchain
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VkSemaphore blitCompleteSemaphore;
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std::vector<VkCommandBuffer> blitCommandBuffers;
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// Camera and view properties
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float eyeSeparation = 0.08f;
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const float focalLength = 0.5f;
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const float fov = 90.0f;
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const float zNear = 0.1f;
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const float zFar = 256.0f;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Multiview";
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camera.type = Camera::CameraType::firstperson;
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camera.setRotation(glm::vec3(0.0f, 90.0f, 0.0f));
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camera.setTranslation(glm::vec3(7.0f, 3.2f, 0.0f));
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camera.movementSpeed = 5.0f;
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settings.overlay = false;
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enabledDeviceExtensions.push_back(VK_KHR_MULTIVIEW_EXTENSION_NAME);
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enabledInstanceExtensions.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
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}
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~VulkanExample()
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{
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vkDestroyPipeline(device, pipeline, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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scene.destroy();
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uniformBufferGS.destroy();
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}
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/*
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Custom framebuffer setup
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Creates a color framebuffer with multiple layers rendered to in a single pass
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*/
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void setupFrameBuffer()
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{
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VkImageView attachments[2];
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{
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VkImageCreateInfo imageCI = vks::initializers::imageCreateInfo();
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imageCI.imageType = VK_IMAGE_TYPE_2D;
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imageCI.format = swapChain.colorFormat;
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imageCI.extent = { width, height, 1 };
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imageCI.mipLevels = 1;
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// Two layers for two views
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imageCI.arrayLayers = 2;
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imageCI.samples = VK_SAMPLE_COUNT_1_BIT;
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imageCI.tiling = VK_IMAGE_TILING_OPTIMAL;
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imageCI.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
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VkMemoryRequirements memReqs;
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VK_CHECK_RESULT(vkCreateImage(device, &imageCI, nullptr, &colorAttachment.image));
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vkGetImageMemoryRequirements(device, colorAttachment.image, &memReqs);
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VkMemoryAllocateInfo memoryAllocInfo = vks::initializers::memoryAllocateInfo();
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memoryAllocInfo.allocationSize = memReqs.size;
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memoryAllocInfo.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device, &memoryAllocInfo, nullptr, &colorAttachment.memory));
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VK_CHECK_RESULT(vkBindImageMemory(device, colorAttachment.image, colorAttachment.memory, 0));
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VkImageViewCreateInfo imageViewCI = vks::initializers::imageViewCreateInfo();
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imageViewCI.viewType = VK_IMAGE_VIEW_TYPE_2D_ARRAY;
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imageViewCI.format = swapChain.colorFormat;
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imageViewCI.flags = 0;
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imageViewCI.subresourceRange = {};
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imageViewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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imageViewCI.subresourceRange.baseMipLevel = 0;
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imageViewCI.subresourceRange.levelCount = 1;
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imageViewCI.subresourceRange.baseArrayLayer = 0;
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// Two layers for two views
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imageViewCI.subresourceRange.layerCount = 2;
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imageViewCI.image = colorAttachment.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &imageViewCI, nullptr, &colorAttachment.view));
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}
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// Depth/Stencil attachment is the same for all frame buffers
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attachments[0] = colorAttachment.view;
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attachments[1] = depthStencil.view;
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VkFramebufferCreateInfo frameBufferCreateInfo = {};
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frameBufferCreateInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
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frameBufferCreateInfo.pNext = NULL;
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frameBufferCreateInfo.renderPass = renderPass;
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frameBufferCreateInfo.attachmentCount = 2;
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frameBufferCreateInfo.pAttachments = attachments;
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frameBufferCreateInfo.width = width;
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frameBufferCreateInfo.height = height;
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frameBufferCreateInfo.layers = 1;
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// Create frame buffers for every swap chain image
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frameBuffers.resize(swapChain.imageCount);
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for (uint32_t i = 0; i < frameBuffers.size(); i++) {
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VK_CHECK_RESULT(vkCreateFramebuffer(device, &frameBufferCreateInfo, nullptr, &frameBuffers[i]));
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}
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}
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/*
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Custom depth/stencil setup
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Creates a depth/stencil framebuffer with multiple layers rendered to in a single pass
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*/
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void setupDepthStencil()
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{
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VkImageCreateInfo image = {};
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image.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
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image.pNext = NULL;
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image.imageType = VK_IMAGE_TYPE_2D;
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image.format = depthFormat;
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image.extent = { width, height, 1 };
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image.mipLevels = 1;
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image.arrayLayers = 2; // Two layers for two viewports
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image.samples = VK_SAMPLE_COUNT_1_BIT;
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image.tiling = VK_IMAGE_TILING_OPTIMAL;
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image.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
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image.flags = 0;
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VkMemoryAllocateInfo mem_alloc = {};
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mem_alloc.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
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mem_alloc.pNext = NULL;
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mem_alloc.allocationSize = 0;
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mem_alloc.memoryTypeIndex = 0;
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VkImageViewCreateInfo depthStencilView = {};
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depthStencilView.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
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depthStencilView.pNext = NULL;
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depthStencilView.viewType = VK_IMAGE_VIEW_TYPE_2D_ARRAY;
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depthStencilView.format = depthFormat;
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depthStencilView.flags = 0;
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depthStencilView.subresourceRange = {};
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depthStencilView.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT;
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depthStencilView.subresourceRange.baseMipLevel = 0;
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depthStencilView.subresourceRange.levelCount = 1;
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depthStencilView.subresourceRange.baseArrayLayer = 0;
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depthStencilView.subresourceRange.layerCount = 1;
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VkMemoryRequirements memReqs;
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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &depthStencil.image));
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vkGetImageMemoryRequirements(device, depthStencil.image, &memReqs);
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mem_alloc.allocationSize = memReqs.size;
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mem_alloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device, &mem_alloc, nullptr, &depthStencil.mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, depthStencil.image, depthStencil.mem, 0));
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depthStencilView.image = depthStencil.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &depthStencilView, nullptr, &depthStencil.view));
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}
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/*
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Custom renderpass setup
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*/
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void setupRenderPass()
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{
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std::array<VkAttachmentDescription, 2> attachments = {};
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// Color attachment
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attachments[0].format = swapChain.colorFormat;
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attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
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attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachments[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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//attachments[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
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attachments[0].finalLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
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// Depth attachment
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attachments[1].format = depthFormat;
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attachments[1].samples = VK_SAMPLE_COUNT_1_BIT;
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attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachments[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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VkAttachmentReference colorReference = {};
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colorReference.attachment = 0;
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colorReference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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VkAttachmentReference depthReference = {};
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depthReference.attachment = 1;
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depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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VkSubpassDescription subpassDescription = {};
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subpassDescription.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
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subpassDescription.colorAttachmentCount = 1;
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subpassDescription.pColorAttachments = &colorReference;
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subpassDescription.pDepthStencilAttachment = &depthReference;
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subpassDescription.inputAttachmentCount = 0;
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subpassDescription.pInputAttachments = nullptr;
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subpassDescription.preserveAttachmentCount = 0;
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subpassDescription.pPreserveAttachments = nullptr;
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subpassDescription.pResolveAttachments = nullptr;
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// Subpass dependencies for layout transitions
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std::array<VkSubpassDependency, 2> dependencies;
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dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
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dependencies[0].dstSubpass = 0;
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dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
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dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
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dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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dependencies[1].srcSubpass = 0;
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dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
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dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
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dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
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dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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VkRenderPassCreateInfo renderPassCI{};
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renderPassCI.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
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renderPassCI.attachmentCount = static_cast<uint32_t>(attachments.size());
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renderPassCI.pAttachments = attachments.data();
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renderPassCI.subpassCount = 1;
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renderPassCI.pSubpasses = &subpassDescription;
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renderPassCI.dependencyCount = static_cast<uint32_t>(dependencies.size());
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renderPassCI.pDependencies = dependencies.data();
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/*
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Setup multiview info for the renderpass
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*/
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/*
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Bit mask that specifies which view rendering is broadcast to
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0011 = Broadcast to first and second view (layer)
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*/
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const uint32_t viewMask = 0b00000011;
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/*
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Bit mask that specifices correlation between views
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An implementation may use this for optimizations (concurrent render)
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*/
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const uint32_t correlationMask = 0b00000011;
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VkRenderPassMultiviewCreateInfo renderPassMultiviewCI{};
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renderPassMultiviewCI.sType = VK_STRUCTURE_TYPE_RENDER_PASS_MULTIVIEW_CREATE_INFO;
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renderPassMultiviewCI.subpassCount = 1;
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renderPassMultiviewCI.pViewMasks = &viewMask;
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renderPassMultiviewCI.correlationMaskCount = 1;
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renderPassMultiviewCI.pCorrelationMasks = &correlationMask;
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renderPassCI.pNext = &renderPassMultiviewCI;
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VK_CHECK_RESULT(vkCreateRenderPass(device, &renderPassCI, nullptr, &renderPass));
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}
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void buildCommandBuffers()
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{
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/*
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Scene rendering
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*/
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = defaultClearColor;
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i) {
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &scene.vertices.buffer, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], scene.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
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vkCmdDrawIndexed(drawCmdBuffers[i], scene.indexCount, 1, 0, 0, 0);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VkImageSubresourceRange subresourceRange{};
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subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS;
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subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS;
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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/*
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Blits
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*/
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blitCommandBuffers.resize(drawCmdBuffers.size());
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VkCommandBufferAllocateInfo cmdBufAllocateInfo = vks::initializers::commandBufferAllocateInfo(cmdPool, VK_COMMAND_BUFFER_LEVEL_PRIMARY, static_cast<uint32_t>(drawCmdBuffers.size()));
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VK_CHECK_RESULT(vkAllocateCommandBuffers(device, &cmdBufAllocateInfo, blitCommandBuffers.data()));
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for (int32_t i = 0; i < blitCommandBuffers.size(); ++i) {
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VK_CHECK_RESULT(vkBeginCommandBuffer(blitCommandBuffers[i], &cmdBufInfo));
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VkImageSubresourceRange subresourceRange{};
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subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS;
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subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS;
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vks::tools::setImageLayout(
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blitCommandBuffers[i],
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swapChain.images[i],
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VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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subresourceRange);
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//vks::tools::setImageLayout(
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// blitCommandBuffers[i],
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// colorAttachment.image,
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// VK_IMAGE_LAYOUT_UNDEFINED,
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// VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
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// subresourceRange);
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VkImageBlit imageBlit{};
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imageBlit.srcOffsets[0] = { 0, 0, 0 };
|
||||
imageBlit.srcOffsets[1] = { static_cast<int32_t>(width), static_cast<int32_t>(height), 1 };
|
||||
imageBlit.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
|
||||
imageBlit.srcSubresource.layerCount = 1;
|
||||
imageBlit.dstSubresource = imageBlit.srcSubresource;
|
||||
|
||||
// Left
|
||||
imageBlit.dstOffsets[0] = { 0, 0, 0 };
|
||||
imageBlit.dstOffsets[1] = { static_cast<int32_t>(width) / 2, static_cast<int32_t>(height), 1 };
|
||||
imageBlit.srcSubresource.baseArrayLayer = 0;
|
||||
vkCmdBlitImage(
|
||||
blitCommandBuffers[i],
|
||||
colorAttachment.image,
|
||||
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
|
||||
swapChain.images[i],
|
||||
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
||||
1,
|
||||
&imageBlit,
|
||||
VK_FILTER_NEAREST);
|
||||
|
||||
// Right
|
||||
imageBlit.dstOffsets[0] = { static_cast<int32_t>(width) / 2, 0, 0 };
|
||||
imageBlit.dstOffsets[1] = { static_cast<int32_t>(width), static_cast<int32_t>(height), 1 };
|
||||
imageBlit.srcSubresource.baseArrayLayer = 1;
|
||||
vkCmdBlitImage(
|
||||
blitCommandBuffers[i],
|
||||
colorAttachment.image,
|
||||
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
|
||||
swapChain.images[i],
|
||||
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
||||
1,
|
||||
&imageBlit,
|
||||
VK_FILTER_NEAREST);
|
||||
|
||||
vks::tools::setImageLayout(
|
||||
blitCommandBuffers[i],
|
||||
swapChain.images[i],
|
||||
VK_IMAGE_LAYOUT_UNDEFINED,
|
||||
VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
|
||||
subresourceRange);
|
||||
|
||||
VK_CHECK_RESULT(vkEndCommandBuffer(blitCommandBuffers[i]));
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void loadAssets()
|
||||
{
|
||||
scene.loadFromFile(getAssetPath() + "models/sampleroom.dae", vertexLayout, 0.25f, vulkanDevice, queue);
|
||||
}
|
||||
|
||||
void prepareDescriptors()
|
||||
{
|
||||
/*
|
||||
Pool
|
||||
*/
|
||||
std::vector<VkDescriptorPoolSize> poolSizes = {
|
||||
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
|
||||
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1)
|
||||
};
|
||||
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(static_cast<uint32_t>(poolSizes.size()), poolSizes.data(), 1);
|
||||
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
||||
|
||||
/*
|
||||
Layouts
|
||||
*/
|
||||
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1)
|
||||
};
|
||||
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
||||
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
|
||||
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
|
||||
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
|
||||
|
||||
/*
|
||||
Descriptors
|
||||
*/
|
||||
VkDescriptorSetAllocateInfo allocateInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
|
||||
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocateInfo, &descriptorSet));
|
||||
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
||||
// Binding 0: Vertex shader UBO
|
||||
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBufferGS.descriptor),
|
||||
};
|
||||
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
||||
}
|
||||
|
||||
void preparePipelines()
|
||||
{
|
||||
|
||||
VkSemaphoreCreateInfo semaphoreCI = vks::initializers::semaphoreCreateInfo();
|
||||
VK_CHECK_RESULT(vkCreateSemaphore(device, &semaphoreCI, nullptr, &blitCompleteSemaphore));
|
||||
|
||||
/*
|
||||
Display multi view features and properties
|
||||
*/
|
||||
|
||||
VkPhysicalDeviceFeatures2KHR deviceFeatures2{};
|
||||
VkPhysicalDeviceMultiviewFeaturesKHR extFeatures{};
|
||||
extFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MULTIVIEW_FEATURES_KHR;
|
||||
deviceFeatures2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR;
|
||||
deviceFeatures2.pNext = &extFeatures;
|
||||
PFN_vkGetPhysicalDeviceFeatures2KHR vkGetPhysicalDeviceFeatures2KHR = reinterpret_cast<PFN_vkGetPhysicalDeviceFeatures2KHR>(vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceFeatures2KHR"));
|
||||
vkGetPhysicalDeviceFeatures2KHR(physicalDevice, &deviceFeatures2);
|
||||
std::cout << "Multiview features:" << std::endl;
|
||||
std::cout << "\tmultiview = " << extFeatures.multiview << std::endl;
|
||||
std::cout << "\tmultiviewGeometryShader = " << extFeatures.multiviewGeometryShader << std::endl;
|
||||
std::cout << "\tmultiviewTessellationShader = " << extFeatures.multiviewTessellationShader << std::endl;
|
||||
std::cout << std::endl;
|
||||
|
||||
VkPhysicalDeviceProperties2KHR deviceProps2{};
|
||||
VkPhysicalDeviceMultiviewPropertiesKHR extProps{};
|
||||
extProps.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MULTIVIEW_PROPERTIES_KHR;
|
||||
deviceProps2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR;
|
||||
deviceProps2.pNext = &extProps;
|
||||
PFN_vkGetPhysicalDeviceProperties2KHR vkGetPhysicalDeviceProperties2KHR = reinterpret_cast<PFN_vkGetPhysicalDeviceProperties2KHR>(vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceProperties2KHR"));
|
||||
vkGetPhysicalDeviceProperties2KHR(physicalDevice, &deviceProps2);
|
||||
std::cout << "Multiview properties:" << std::endl;
|
||||
std::cout << "\tmaxMultiviewViewCount = " << extProps.maxMultiviewViewCount << std::endl;
|
||||
std::cout << "\tmaxMultiviewInstanceIndex = " << extProps.maxMultiviewInstanceIndex << std::endl;
|
||||
|
||||
/*
|
||||
Create graphics pipeline
|
||||
*/
|
||||
|
||||
VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
|
||||
VkPipelineRasterizationStateCreateInfo rasterizationStateCI = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_CLOCKWISE);
|
||||
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
||||
VkPipelineColorBlendStateCreateInfo colorBlendStateCI = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
||||
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
|
||||
VkPipelineViewportStateCreateInfo viewportStateCI = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
||||
VkPipelineMultisampleStateCreateInfo multisampleStateCI = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT);
|
||||
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
|
||||
VkPipelineDynamicStateCreateInfo dynamicStateCI = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
|
||||
|
||||
std::vector<VkVertexInputBindingDescription> vertexInputBindings = {
|
||||
vks::initializers::vertexInputBindingDescription(0, vertexLayout.stride(), VK_VERTEX_INPUT_RATE_VERTEX),
|
||||
};
|
||||
std::vector<VkVertexInputAttributeDescription> vertexInputAttributes = {
|
||||
vks::initializers::vertexInputAttributeDescription(0, 0, VK_FORMAT_R32G32B32_SFLOAT, 0), // Location 0: Position
|
||||
vks::initializers::vertexInputAttributeDescription(0, 1, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 3), // Location 1: Normals
|
||||
vks::initializers::vertexInputAttributeDescription(0, 2, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 6), // Location 2: Color
|
||||
|
||||
};
|
||||
VkPipelineVertexInputStateCreateInfo vertexInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
||||
vertexInputState.vertexBindingDescriptionCount = static_cast<uint32_t>(vertexInputBindings.size());
|
||||
vertexInputState.pVertexBindingDescriptions = vertexInputBindings.data();
|
||||
vertexInputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertexInputAttributes.size());
|
||||
vertexInputState.pVertexAttributeDescriptions = vertexInputAttributes.data();
|
||||
|
||||
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass);
|
||||
pipelineCI.pVertexInputState = &vertexInputState;
|
||||
pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;
|
||||
pipelineCI.pRasterizationState = &rasterizationStateCI;
|
||||
pipelineCI.pColorBlendState = &colorBlendStateCI;
|
||||
pipelineCI.pMultisampleState = &multisampleStateCI;
|
||||
pipelineCI.pViewportState = &viewportStateCI;
|
||||
pipelineCI.pDepthStencilState = &depthStencilStateCI;
|
||||
pipelineCI.pDynamicState = &dynamicStateCI;
|
||||
pipelineCI.renderPass = renderPass;
|
||||
|
||||
/*
|
||||
Load shaders
|
||||
Contrary to the viewport array example we don't need a geometry shader for broadcasting
|
||||
*/
|
||||
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
||||
shaderStages[0] = loadShader(getAssetPath() + "shaders/multiview/multiview.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
||||
shaderStages[1] = loadShader(getAssetPath() + "shaders/multiview/multiview.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
||||
pipelineCI.stageCount = 2;
|
||||
pipelineCI.pStages = shaderStages.data();
|
||||
|
||||
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipeline));
|
||||
}
|
||||
|
||||
// Prepare and initialize uniform buffer containing shader uniforms
|
||||
void prepareUniformBuffers()
|
||||
{
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&uniformBufferGS,
|
||||
sizeof(uboGS)));
|
||||
VK_CHECK_RESULT(uniformBufferGS.map());
|
||||
updateUniformBuffers();
|
||||
}
|
||||
|
||||
void updateUniformBuffers()
|
||||
{
|
||||
// Matrices for the two viewports
|
||||
// See http://paulbourke.net/stereographics/stereorender/
|
||||
|
||||
// Calculate some variables
|
||||
float aspectRatio = (float)(width * 0.5f) / (float)height;
|
||||
float wd2 = zNear * tan(glm::radians(fov / 2.0f));
|
||||
float ndfl = zNear / focalLength;
|
||||
float left, right;
|
||||
float top = wd2;
|
||||
float bottom = -wd2;
|
||||
|
||||
glm::vec3 camFront;
|
||||
camFront.x = -cos(glm::radians(rotation.x)) * sin(glm::radians(rotation.y));
|
||||
camFront.y = sin(glm::radians(rotation.x));
|
||||
camFront.z = cos(glm::radians(rotation.x)) * cos(glm::radians(rotation.y));
|
||||
camFront = glm::normalize(camFront);
|
||||
glm::vec3 camRight = glm::normalize(glm::cross(camFront, glm::vec3(0.0f, 1.0f, 0.0f)));
|
||||
|
||||
glm::mat4 rotM = glm::mat4(1.0f);
|
||||
glm::mat4 transM;
|
||||
|
||||
rotM = glm::rotate(rotM, glm::radians(camera.rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
|
||||
rotM = glm::rotate(rotM, glm::radians(camera.rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
|
||||
rotM = glm::rotate(rotM, glm::radians(camera.rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
|
||||
|
||||
// Left eye
|
||||
left = -aspectRatio * wd2 + 0.5f * eyeSeparation * ndfl;
|
||||
right = aspectRatio * wd2 + 0.5f * eyeSeparation * ndfl;
|
||||
|
||||
transM = glm::translate(glm::mat4(1.0f), camera.position - camRight * (eyeSeparation / 2.0f));
|
||||
|
||||
uboGS.projection[0] = glm::frustum(left, right, bottom, top, zNear, zFar);
|
||||
uboGS.modelview[0] = rotM * transM;
|
||||
|
||||
// Right eye
|
||||
left = -aspectRatio * wd2 - 0.5f * eyeSeparation * ndfl;
|
||||
right = aspectRatio * wd2 - 0.5f * eyeSeparation * ndfl;
|
||||
|
||||
transM = glm::translate(glm::mat4(1.0f), camera.position + camRight * (eyeSeparation / 2.0f));
|
||||
|
||||
uboGS.projection[1] = glm::frustum(left, right, bottom, top, zNear, zFar);
|
||||
uboGS.modelview[1] = rotM * transM;
|
||||
|
||||
memcpy(uniformBufferGS.mapped, &uboGS, sizeof(uboGS));
|
||||
}
|
||||
|
||||
void draw()
|
||||
{
|
||||
// TODO: blit after render, needs changes in base clase (fixed semaphores in submitFrame)
|
||||
|
||||
VulkanExampleBase::prepareFrame();
|
||||
|
||||
submitInfo.pWaitSemaphores = &semaphores.presentComplete;
|
||||
submitInfo.pSignalSemaphores = &blitCompleteSemaphore;
|
||||
submitInfo.commandBufferCount = 1;
|
||||
submitInfo.pCommandBuffers = &blitCommandBuffers[currentBuffer];
|
||||
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
||||
|
||||
submitInfo.pWaitSemaphores = &blitCompleteSemaphore;
|
||||
submitInfo.pSignalSemaphores = &semaphores.renderComplete;
|
||||
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
||||
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
||||
|
||||
VulkanExampleBase::submitFrame();
|
||||
}
|
||||
|
||||
void prepare()
|
||||
{
|
||||
VulkanExampleBase::prepare();
|
||||
loadAssets();
|
||||
prepareUniformBuffers();
|
||||
prepareDescriptors();
|
||||
preparePipelines();
|
||||
buildCommandBuffers();
|
||||
prepared = true;
|
||||
}
|
||||
|
||||
virtual void render()
|
||||
{
|
||||
if (!prepared)
|
||||
return;
|
||||
draw();
|
||||
if (camera.updated) {
|
||||
updateUniformBuffers();
|
||||
}
|
||||
}
|
||||
|
||||
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
||||
{
|
||||
if (overlay->header("Settings")) {
|
||||
if (overlay->sliderFloat("Eye separation", &eyeSeparation, -1.0f, 1.0f)) {
|
||||
updateUniformBuffers();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
VULKAN_EXAMPLE_MAIN()
|
||||
Loading…
Add table
Add a link
Reference in a new issue