608 lines
30 KiB
C++
608 lines
30 KiB
C++
/*
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* Vulkan Example - Variable rate shading
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*
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* Copyright (C) 2020-2023 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 "variablerateshading.h"
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VulkanExample::VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Variable rate shading";
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apiVersion = VK_API_VERSION_1_1;
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camera.type = Camera::CameraType::firstperson;
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camera.flipY = true;
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camera.setPosition(glm::vec3(0.0f, 1.0f, 0.0f));
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camera.setRotation(glm::vec3(0.0f, -90.0f, 0.0f));
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
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camera.setRotationSpeed(0.25f);
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enabledInstanceExtensions.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
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enabledDeviceExtensions.push_back(VK_KHR_CREATE_RENDERPASS_2_EXTENSION_NAME);
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enabledDeviceExtensions.push_back(VK_KHR_FRAGMENT_SHADING_RATE_EXTENSION_NAME);
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}
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VulkanExample::~VulkanExample()
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{
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vkDestroyPipeline(device, basePipelines.masked, nullptr);
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vkDestroyPipeline(device, basePipelines.opaque, nullptr);
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vkDestroyPipeline(device, shadingRatePipelines.masked, nullptr);
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vkDestroyPipeline(device, shadingRatePipelines.opaque, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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vkDestroyImageView(device, shadingRateImage.view, nullptr);
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vkDestroyImage(device, shadingRateImage.image, nullptr);
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vkFreeMemory(device, shadingRateImage.memory, nullptr);
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shaderData.buffer.destroy();
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}
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void VulkanExample::getEnabledFeatures()
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{
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enabledFeatures.samplerAnisotropy = deviceFeatures.samplerAnisotropy;
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// POI
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enabledPhysicalDeviceShadingRateImageFeaturesKHR.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADING_RATE_FEATURES_KHR;
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enabledPhysicalDeviceShadingRateImageFeaturesKHR.attachmentFragmentShadingRate = VK_TRUE;
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enabledPhysicalDeviceShadingRateImageFeaturesKHR.pipelineFragmentShadingRate = VK_FALSE;
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enabledPhysicalDeviceShadingRateImageFeaturesKHR.primitiveFragmentShadingRate = VK_FALSE;
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deviceCreatepNextChain = &enabledPhysicalDeviceShadingRateImageFeaturesKHR;
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}
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/*
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If the window has been resized, we need to recreate the shading rate image
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*/
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void VulkanExample::handleResize()
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{
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// Delete allocated resources
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vkDestroyImageView(device, shadingRateImage.view, nullptr);
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vkDestroyImage(device, shadingRateImage.image, nullptr);
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vkFreeMemory(device, shadingRateImage.memory, nullptr);
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// Recreate image
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prepareShadingRateImage();
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resized = false;
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}
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void VulkanExample::setupFrameBuffer()
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{
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VkImageView attachments[3];
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// Depth/Stencil attachment is the same for all frame buffers
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attachments[1] = depthStencil.view;
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// Fragment shading rate attachment
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attachments[2] = shadingRateImage.view;
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VkFramebufferCreateInfo frameBufferCreateInfo{};
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frameBufferCreateInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
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frameBufferCreateInfo.renderPass = renderPass;
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frameBufferCreateInfo.attachmentCount = 3;
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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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{
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attachments[0] = swapChain.buffers[i].view;
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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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void VulkanExample::setupRenderPass()
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{
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// Note that we need to use ...2KHR types in here, as fragment shading rate requires additional properties and structs to be passed at renderpass creation
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if (!vkCreateRenderPass2KHR) {
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vkCreateRenderPass2KHR = reinterpret_cast<PFN_vkCreateRenderPass2KHR>(vkGetInstanceProcAddr(instance, "vkCreateRenderPass2KHR"));
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}
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// Create an image with the shading rates to be used during rendering
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prepareShadingRateImage();
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std::array<VkAttachmentDescription2KHR, 3> attachments = {};
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// Color attachment
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attachments[0].sType = VK_STRUCTURE_TYPE_ATTACHMENT_DESCRIPTION_2;
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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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// Depth attachment
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attachments[1].sType = VK_STRUCTURE_TYPE_ATTACHMENT_DESCRIPTION_2;
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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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// Fragment shading rate attachment
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attachments[2].sType = VK_STRUCTURE_TYPE_ATTACHMENT_DESCRIPTION_2;
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attachments[2].format = VK_FORMAT_R8_UINT;
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attachments[2].samples = VK_SAMPLE_COUNT_1_BIT;
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attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
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attachments[2].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachments[2].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attachments[2].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachments[2].initialLayout = VK_IMAGE_LAYOUT_FRAGMENT_SHADING_RATE_ATTACHMENT_OPTIMAL_KHR;
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attachments[2].finalLayout = VK_IMAGE_LAYOUT_FRAGMENT_SHADING_RATE_ATTACHMENT_OPTIMAL_KHR;
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VkAttachmentReference2KHR colorReference = {};
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colorReference.sType = VK_STRUCTURE_TYPE_ATTACHMENT_REFERENCE_2;
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colorReference.attachment = 0;
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colorReference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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colorReference.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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VkAttachmentReference2KHR depthReference = {};
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depthReference.sType = VK_STRUCTURE_TYPE_ATTACHMENT_REFERENCE_2;
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depthReference.attachment = 1;
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depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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depthReference.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
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// Setup the attachment reference for the shading rate image attachment in slot 2
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VkAttachmentReference2 fragmentShadingRateReference{};
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fragmentShadingRateReference.sType = VK_STRUCTURE_TYPE_ATTACHMENT_REFERENCE_2;
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fragmentShadingRateReference.attachment = 2;
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fragmentShadingRateReference.layout = VK_IMAGE_LAYOUT_FRAGMENT_SHADING_RATE_ATTACHMENT_OPTIMAL_KHR;
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// Setup the attachment info for the shading rate image, which will be added to the sub pass via structure chaining (in pNext)
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VkFragmentShadingRateAttachmentInfoKHR fragmentShadingRateAttachmentInfo{};
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fragmentShadingRateAttachmentInfo.sType = VK_STRUCTURE_TYPE_FRAGMENT_SHADING_RATE_ATTACHMENT_INFO_KHR;
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fragmentShadingRateAttachmentInfo.pFragmentShadingRateAttachment = &fragmentShadingRateReference;
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fragmentShadingRateAttachmentInfo.shadingRateAttachmentTexelSize.width = physicalDeviceShadingRateImageProperties.maxFragmentShadingRateAttachmentTexelSize.width;
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fragmentShadingRateAttachmentInfo.shadingRateAttachmentTexelSize.height = physicalDeviceShadingRateImageProperties.maxFragmentShadingRateAttachmentTexelSize.height;
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VkSubpassDescription2KHR subpassDescription = {};
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subpassDescription.sType = VK_STRUCTURE_TYPE_SUBPASS_DESCRIPTION_2;
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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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subpassDescription.pNext = &fragmentShadingRateAttachmentInfo;
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// Subpass dependencies for layout transitions
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std::array<VkSubpassDependency2KHR, 2> dependencies = {};
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dependencies[0].sType = VK_STRUCTURE_TYPE_SUBPASS_DEPENDENCY_2;
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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 | VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_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 | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
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dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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dependencies[1].sType = VK_STRUCTURE_TYPE_SUBPASS_DEPENDENCY_2;
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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 | VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_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 | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_DEPTH_STENCIL_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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VkRenderPassCreateInfo2KHR renderPassCI = {};
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renderPassCI.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO_2;
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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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VK_CHECK_RESULT(vkCreateRenderPass2KHR(device, &renderPassCI, nullptr, &renderPass));
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}
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void VulkanExample::buildCommandBuffers()
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{
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if (resized)
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{
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handleResize();
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}
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// As this is an extension, we need to manually load the extension pointers
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if (!vkCmdSetFragmentShadingRateKHR) {
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vkCmdSetFragmentShadingRateKHR = reinterpret_cast<PFN_vkCmdSetFragmentShadingRateKHR>(vkGetDeviceProcAddr(device, "vkCmdSetFragmentShadingRateKHR"));
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}
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[3];
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clearValues[0].color = { { 0.25f, 0.25f, 0.25f, 1.0f } };;
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clearValues[1].depthStencil = { 1.0f, 0 };
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clearValues[2].color = { {0.0f, 0.0f, 0.0f, 0.0f} };
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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 = 3;
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renderPassBeginInfo.pClearValues = clearValues;
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const VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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const VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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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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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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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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// Set the fragment shading rate state for the current pipeline
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VkExtent2D fragmentSize = { 1, 1 };
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VkFragmentShadingRateCombinerOpKHR combinerOps[2];
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// The combiners determine how the different shading rate values for the pipeline, primitives and attachment are combined
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if (enableShadingRate)
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{
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// If shading rate from attachment is enabled, we set the combiner, so that the values from the attachment are used
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// Combiner for pipeline (A) and primitive (B) - Not used in this sample
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combinerOps[0] = VK_FRAGMENT_SHADING_RATE_COMBINER_OP_KEEP_KHR;
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// Combiner for pipeline (A) and attachment (B), replace the pipeline default value (fragment_size) with the fragment sizes stored in the attachment
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combinerOps[1] = VK_FRAGMENT_SHADING_RATE_COMBINER_OP_REPLACE_KHR;
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}
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else
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{
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// If shading rate from attachment is disabled, we keep the value set via the dynamic state
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combinerOps[0] = VK_FRAGMENT_SHADING_RATE_COMBINER_OP_KEEP_KHR;
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combinerOps[1] = VK_FRAGMENT_SHADING_RATE_COMBINER_OP_KEEP_KHR;
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}
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vkCmdSetFragmentShadingRateKHR(drawCmdBuffers[i], &fragmentSize, combinerOps);
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// Render the scene
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Pipelines& pipelines = enableShadingRate ? shadingRatePipelines : basePipelines;
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.opaque);
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scene.draw(drawCmdBuffers[i], vkglTF::RenderFlags::BindImages | vkglTF::RenderFlags::RenderOpaqueNodes, pipelineLayout);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.masked);
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scene.draw(drawCmdBuffers[i], vkglTF::RenderFlags::BindImages | vkglTF::RenderFlags::RenderAlphaMaskedNodes, pipelineLayout);
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drawUI(drawCmdBuffers[i]);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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}
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void VulkanExample::loadAssets()
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{
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vkglTF::descriptorBindingFlags = vkglTF::DescriptorBindingFlags::ImageBaseColor | vkglTF::DescriptorBindingFlags::ImageNormalMap;
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scene.loadFromFile(getAssetPath() + "models/sponza/sponza.gltf", vulkanDevice, queue, vkglTF::FileLoadingFlags::PreTransformVertices);
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}
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void VulkanExample::setupDescriptors()
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{
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// Pool
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const std::vector<VkDescriptorPoolSize> poolSizes = {
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 1);
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VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
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// Descriptor set layout
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const std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0),
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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
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// Pipeline layout
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const std::vector<VkDescriptorSetLayout> setLayouts = {
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descriptorSetLayout,
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vkglTF::descriptorSetLayoutImage,
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};
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VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(setLayouts.data(), 2);
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VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
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// Descriptor set
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VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
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std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
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vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &shaderData.buffer.descriptor),
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};
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vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
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}
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// [POI]
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void VulkanExample::prepareShadingRateImage()
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{
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// As this is an extension, we need to manually load the extension pointers
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if (!vkGetPhysicalDeviceFragmentShadingRatesKHR) {
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vkGetPhysicalDeviceFragmentShadingRatesKHR = reinterpret_cast<PFN_vkGetPhysicalDeviceFragmentShadingRatesKHR>(vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceFragmentShadingRatesKHR"));
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}
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// Get properties of this extensions, which also contains texel sizes required to setup the image
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physicalDeviceShadingRateImageProperties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADING_RATE_PROPERTIES_KHR;
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VkPhysicalDeviceProperties2 deviceProperties2{};
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deviceProperties2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
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deviceProperties2.pNext = &physicalDeviceShadingRateImageProperties;
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vkGetPhysicalDeviceProperties2(physicalDevice, &deviceProperties2);
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// We need to check if the requested format for the shading rate attachment supports the required flag
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const VkFormat imageFormat = VK_FORMAT_R8_UINT;
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VkFormatProperties formatProperties;
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vkGetPhysicalDeviceFormatProperties(physicalDevice, imageFormat, &formatProperties);
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if (!(formatProperties.optimalTilingFeatures & VK_FORMAT_FEATURE_FRAGMENT_SHADING_RATE_ATTACHMENT_BIT_KHR))
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{
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throw std::runtime_error("Selected shading rate attachment image format does not fragment shading rate");
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}
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// Shading rate image size depends on shading rate texel size
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// For each texel in the target image, there is a corresponding shading texel size width x height block in the shading rate image
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VkExtent3D imageExtent{};
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imageExtent.width = static_cast<uint32_t>(ceil(width / (float)physicalDeviceShadingRateImageProperties.maxFragmentShadingRateAttachmentTexelSize.width));
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imageExtent.height = static_cast<uint32_t>(ceil(height / (float)physicalDeviceShadingRateImageProperties.maxFragmentShadingRateAttachmentTexelSize.height));
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imageExtent.depth = 1;
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VkImageCreateInfo imageCI{};
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imageCI.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
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imageCI.imageType = VK_IMAGE_TYPE_2D;
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imageCI.format = imageFormat;
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imageCI.extent = imageExtent;
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imageCI.mipLevels = 1;
|
|
imageCI.arrayLayers = 1;
|
|
imageCI.samples = VK_SAMPLE_COUNT_1_BIT;
|
|
imageCI.tiling = VK_IMAGE_TILING_OPTIMAL;
|
|
imageCI.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
|
|
imageCI.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
|
|
imageCI.usage = VK_IMAGE_USAGE_FRAGMENT_SHADING_RATE_ATTACHMENT_BIT_KHR | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
|
|
VK_CHECK_RESULT(vkCreateImage(device, &imageCI, nullptr, &shadingRateImage.image));
|
|
VkMemoryRequirements memReqs{};
|
|
vkGetImageMemoryRequirements(device, shadingRateImage.image, &memReqs);
|
|
|
|
VkMemoryAllocateInfo memAllloc{};
|
|
memAllloc.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
|
|
memAllloc.allocationSize = memReqs.size;
|
|
memAllloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
|
|
VK_CHECK_RESULT(vkAllocateMemory(device, &memAllloc, nullptr, &shadingRateImage.memory));
|
|
VK_CHECK_RESULT(vkBindImageMemory(device, shadingRateImage.image, shadingRateImage.memory, 0));
|
|
|
|
VkImageViewCreateInfo imageViewCI{};
|
|
imageViewCI.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
|
|
imageViewCI.viewType = VK_IMAGE_VIEW_TYPE_2D;
|
|
imageViewCI.image = shadingRateImage.image;
|
|
imageViewCI.format = VK_FORMAT_R8_UINT;
|
|
imageViewCI.subresourceRange.baseMipLevel = 0;
|
|
imageViewCI.subresourceRange.levelCount = 1;
|
|
imageViewCI.subresourceRange.baseArrayLayer = 0;
|
|
imageViewCI.subresourceRange.layerCount = 1;
|
|
imageViewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
|
|
VK_CHECK_RESULT(vkCreateImageView(device, &imageViewCI, nullptr, &shadingRateImage.view));
|
|
|
|
// The shading rates are stored in a buffer that'll be copied to the shading rate image
|
|
VkDeviceSize bufferSize = imageExtent.width * imageExtent.height * sizeof(uint8_t);
|
|
|
|
// Fragment sizes are encoded in a single texel as follows:
|
|
// size(w) = 2^((texel/4) & 3)
|
|
// size(h)h = 2^(texel & 3)
|
|
|
|
// Populate it with the lowest possible shading rate
|
|
uint8_t val = (4 >> 1) | (4 << 1);
|
|
uint8_t* shadingRatePatternData = new uint8_t[bufferSize];
|
|
memset(shadingRatePatternData, val, bufferSize);
|
|
|
|
// Get a list of available shading rate patterns
|
|
std::vector<VkPhysicalDeviceFragmentShadingRateKHR> fragmentShadingRates{};
|
|
uint32_t fragmentShadingRatesCount = 0;
|
|
vkGetPhysicalDeviceFragmentShadingRatesKHR(physicalDevice, &fragmentShadingRatesCount, nullptr);
|
|
if (fragmentShadingRatesCount > 0) {
|
|
fragmentShadingRates.resize(fragmentShadingRatesCount);
|
|
for (VkPhysicalDeviceFragmentShadingRateKHR& fragmentShadingRate : fragmentShadingRates) {
|
|
// In addition to the value, we also need to set the sType for each rate to comply with the spec or else the call to vkGetPhysicalDeviceFragmentShadingRatesKHR will result in undefined behaviour
|
|
fragmentShadingRate.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADING_RATE_KHR;
|
|
}
|
|
vkGetPhysicalDeviceFragmentShadingRatesKHR(physicalDevice, &fragmentShadingRatesCount, fragmentShadingRates.data());
|
|
}
|
|
// Create a circular pattern from the available list of fragment shading rates with decreasing sampling rates outwards (max. range, pattern)
|
|
// Shading rates returned by vkGetPhysicalDeviceFragmentShadingRatesKHR are ordered from largest to smallest
|
|
std::map<float, uint8_t> patternLookup{};
|
|
float range = 25.0f / static_cast<uint32_t>(fragmentShadingRates.size());
|
|
float currentRange = 8.0f;
|
|
for (size_t i = fragmentShadingRates.size() - 1; i > 0; i--) {
|
|
uint32_t rate_v = fragmentShadingRates[i].fragmentSize.width == 1 ? 0 : (fragmentShadingRates[i].fragmentSize.width >> 1);
|
|
uint32_t rate_h = fragmentShadingRates[i].fragmentSize.height == 1 ? 0 : (fragmentShadingRates[i].fragmentSize.height << 1);
|
|
patternLookup[currentRange] = rate_v | rate_h;
|
|
currentRange += range;
|
|
}
|
|
|
|
uint8_t* ptrData = shadingRatePatternData;
|
|
for (uint32_t y = 0; y < imageExtent.height; y++) {
|
|
for (uint32_t x = 0; x < imageExtent.width; x++) {
|
|
const float deltaX = (static_cast<float>(imageExtent.width) / 2.0f - static_cast<float>(x)) / imageExtent.width * 100.0f;
|
|
const float deltaY = (static_cast<float>(imageExtent.height) / 2.0f - static_cast<float>(y)) / imageExtent.height * 100.0f;
|
|
const float dist = std::sqrt(deltaX * deltaX + deltaY * deltaY);
|
|
for (auto pattern : patternLookup) {
|
|
if (dist < pattern.first) {
|
|
*ptrData = pattern.second;
|
|
break;
|
|
}
|
|
}
|
|
ptrData++;
|
|
}
|
|
}
|
|
|
|
// Copy the shading rate pattern to the shading rate image
|
|
|
|
VkBuffer stagingBuffer;
|
|
VkDeviceMemory stagingMemory;
|
|
|
|
VkBufferCreateInfo bufferCreateInfo{};
|
|
bufferCreateInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
|
|
bufferCreateInfo.size = bufferSize;
|
|
bufferCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
|
|
bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
|
|
VK_CHECK_RESULT(vkCreateBuffer(device, &bufferCreateInfo, nullptr, &stagingBuffer));
|
|
VkMemoryAllocateInfo memAllocInfo{};
|
|
memAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
|
|
memReqs = {};
|
|
vkGetBufferMemoryRequirements(device, stagingBuffer, &memReqs);
|
|
memAllocInfo.allocationSize = memReqs.size;
|
|
memAllocInfo.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
|
|
VK_CHECK_RESULT(vkAllocateMemory(device, &memAllocInfo, nullptr, &stagingMemory));
|
|
VK_CHECK_RESULT(vkBindBufferMemory(device, stagingBuffer, stagingMemory, 0));
|
|
|
|
uint8_t* mapped;
|
|
VK_CHECK_RESULT(vkMapMemory(device, stagingMemory, 0, memReqs.size, 0, (void**)&mapped));
|
|
memcpy(mapped, shadingRatePatternData, bufferSize);
|
|
vkUnmapMemory(device, stagingMemory);
|
|
|
|
delete[] shadingRatePatternData;
|
|
|
|
// Upload
|
|
VkCommandBuffer copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
|
VkImageSubresourceRange subresourceRange = {};
|
|
subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
|
|
subresourceRange.levelCount = 1;
|
|
subresourceRange.layerCount = 1;
|
|
{
|
|
VkImageMemoryBarrier imageMemoryBarrier{};
|
|
imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
|
|
imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
|
|
imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
|
|
imageMemoryBarrier.srcAccessMask = 0;
|
|
imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
|
|
imageMemoryBarrier.image = shadingRateImage.image;
|
|
imageMemoryBarrier.subresourceRange = subresourceRange;
|
|
vkCmdPipelineBarrier(copyCmd, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
|
|
}
|
|
VkBufferImageCopy bufferCopyRegion{};
|
|
bufferCopyRegion.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
|
|
bufferCopyRegion.imageSubresource.layerCount = 1;
|
|
bufferCopyRegion.imageExtent.width = imageExtent.width;
|
|
bufferCopyRegion.imageExtent.height = imageExtent.height;
|
|
bufferCopyRegion.imageExtent.depth = 1;
|
|
vkCmdCopyBufferToImage(copyCmd, stagingBuffer, shadingRateImage.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &bufferCopyRegion);
|
|
{
|
|
VkImageMemoryBarrier imageMemoryBarrier{};
|
|
imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
|
|
imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
|
|
imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_FRAGMENT_SHADING_RATE_ATTACHMENT_OPTIMAL_KHR;
|
|
imageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
|
|
imageMemoryBarrier.dstAccessMask = 0;
|
|
imageMemoryBarrier.image = shadingRateImage.image;
|
|
imageMemoryBarrier.subresourceRange = subresourceRange;
|
|
vkCmdPipelineBarrier(copyCmd, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
|
|
}
|
|
vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
|
|
|
|
vkFreeMemory(device, stagingMemory, nullptr);
|
|
vkDestroyBuffer(device, stagingBuffer, nullptr);
|
|
}
|
|
|
|
void VulkanExample::preparePipelines()
|
|
{
|
|
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_COUNTER_CLOCKWISE, 0);
|
|
VkPipelineColorBlendAttachmentState blendAttachmentStateCI = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
|
VkPipelineColorBlendStateCreateInfo colorBlendStateCI = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentStateCI);
|
|
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, 0);
|
|
const std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR, VK_DYNAMIC_STATE_FRAGMENT_SHADING_RATE_KHR };
|
|
VkPipelineDynamicStateCreateInfo dynamicStateCI = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables.data(), static_cast<uint32_t>(dynamicStateEnables.size()), 0);
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass, 0);
|
|
pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;
|
|
pipelineCI.pRasterizationState = &rasterizationStateCI;
|
|
pipelineCI.pColorBlendState = &colorBlendStateCI;
|
|
pipelineCI.pMultisampleState = &multisampleStateCI;
|
|
pipelineCI.pViewportState = &viewportStateCI;
|
|
pipelineCI.pDepthStencilState = &depthStencilStateCI;
|
|
pipelineCI.pDynamicState = &dynamicStateCI;
|
|
pipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCI.pStages = shaderStages.data();
|
|
pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({ vkglTF::VertexComponent::Position, vkglTF::VertexComponent::Normal, vkglTF::VertexComponent::UV, vkglTF::VertexComponent::Color, vkglTF::VertexComponent::Tangent });
|
|
|
|
shaderStages[0] = loadShader(getShadersPath() + "variablerateshading/scene.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "variablerateshading/scene.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
// Properties for alpha masked materials will be passed via specialization constants
|
|
struct SpecializationData {
|
|
VkBool32 alphaMask;
|
|
float alphaMaskCutoff;
|
|
} specializationData;
|
|
specializationData.alphaMask = false;
|
|
specializationData.alphaMaskCutoff = 0.5f;
|
|
const std::vector<VkSpecializationMapEntry> specializationMapEntries = {
|
|
vks::initializers::specializationMapEntry(0, offsetof(SpecializationData, alphaMask), sizeof(SpecializationData::alphaMask)),
|
|
vks::initializers::specializationMapEntry(1, offsetof(SpecializationData, alphaMaskCutoff), sizeof(SpecializationData::alphaMaskCutoff)),
|
|
};
|
|
VkSpecializationInfo specializationInfo = vks::initializers::specializationInfo(specializationMapEntries, sizeof(specializationData), &specializationData);
|
|
shaderStages[1].pSpecializationInfo = &specializationInfo;
|
|
|
|
// Create pipeline without shading rate
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &basePipelines.opaque));
|
|
specializationData.alphaMask = true;
|
|
rasterizationStateCI.cullMode = VK_CULL_MODE_NONE;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &basePipelines.masked));
|
|
rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT;
|
|
specializationData.alphaMask = false;
|
|
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &shadingRatePipelines.opaque));
|
|
specializationData.alphaMask = true;
|
|
rasterizationStateCI.cullMode = VK_CULL_MODE_NONE;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &shadingRatePipelines.masked));
|
|
}
|
|
|
|
void VulkanExample::prepareUniformBuffers()
|
|
{
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&shaderData.buffer,
|
|
sizeof(shaderData.values)));
|
|
VK_CHECK_RESULT(shaderData.buffer.map());
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void VulkanExample::updateUniformBuffers()
|
|
{
|
|
shaderData.values.projection = camera.matrices.perspective;
|
|
shaderData.values.view = camera.matrices.view;
|
|
shaderData.values.viewPos = camera.viewPos;
|
|
shaderData.values.colorShadingRate = colorShadingRate;
|
|
memcpy(shaderData.buffer.mapped, &shaderData.values, sizeof(shaderData.values));
|
|
}
|
|
|
|
void VulkanExample::prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadAssets();
|
|
prepareUniformBuffers();
|
|
setupDescriptors();
|
|
preparePipelines();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
void VulkanExample::render()
|
|
{
|
|
renderFrame();
|
|
if (camera.updated) {
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
|
|
void VulkanExample::OnUpdateUIOverlay(vks::UIOverlay* overlay)
|
|
{
|
|
if (overlay->checkBox("Enable shading rate", &enableShadingRate)) {
|
|
buildCommandBuffers();
|
|
}
|
|
if (overlay->checkBox("Color shading rates", &colorShadingRate)) {
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|