729 lines
32 KiB
C++
729 lines
32 KiB
C++
/*
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* Vulkan Example - Conservative rasterization
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*
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* Note: Requires a device that supports the VK_EXT_conservative_rasterization extension
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*
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* Uses an offscreen buffer with lower resolution to demonstrate the effect of conservative rasterization
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*
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* Copyright 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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#define ENABLE_VALIDATION false
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#define FB_COLOR_FORMAT VK_FORMAT_R8G8B8A8_UNORM
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#define ZOOM_FACTOR 16
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class VulkanExample : public VulkanExampleBase
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{
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public:
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// Fetch and store conservative rasterization state props for display purposes
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VkPhysicalDeviceConservativeRasterizationPropertiesEXT conservativeRasterProps{};
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bool conservativeRasterEnabled = true;
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struct Vertex {
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float position[3];
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float color[3];
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};
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struct Triangle {
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vks::Buffer vertices;
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vks::Buffer indices;
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uint32_t indexCount;
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} triangle;
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vks::Buffer uniformBuffer;
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struct UniformBuffers {
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vks::Buffer scene;
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} uniformBuffers;
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struct UboScene {
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glm::mat4 projection;
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glm::mat4 model;
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} uboScene;
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struct PipelineLayouts {
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VkPipelineLayout scene;
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VkPipelineLayout fullscreen;
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} pipelineLayouts;
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struct Pipelines {
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VkPipeline triangle;
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VkPipeline triangleConservativeRaster;
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VkPipeline triangleOverlay;
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VkPipeline fullscreen;
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} pipelines;
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struct DescriptorSetLayouts {
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VkDescriptorSetLayout scene;
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VkDescriptorSetLayout fullscreen;
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} descriptorSetLayouts;
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struct DescriptorSets {
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VkDescriptorSet scene;
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VkDescriptorSet fullscreen;
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} descriptorSets;
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// Framebuffer for offscreen rendering
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struct FrameBufferAttachment {
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VkImage image;
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VkDeviceMemory mem;
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VkImageView view;
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};
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struct OffscreenPass {
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int32_t width, height;
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VkFramebuffer frameBuffer;
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FrameBufferAttachment color, depth;
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VkRenderPass renderPass;
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VkSampler sampler;
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VkDescriptorImageInfo descriptor;
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} offscreenPass;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Conservative rasterization";
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settings.overlay = true;
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camera.type = Camera::CameraType::lookat;
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 512.0f);
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camera.setRotation(glm::vec3(0.0f));
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camera.setTranslation(glm::vec3(0.0f, 0.0f, -2.0f));
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// Enable extension required for conservative rasterization
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enabledDeviceExtensions.push_back(VK_EXT_CONSERVATIVE_RASTERIZATION_EXTENSION_NAME);
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// Reading device properties of conservative rasterization requires VK_KHR_get_physical_device_properties2 to be enabled
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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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// Frame buffer
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vkDestroyImageView(device, offscreenPass.color.view, nullptr);
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vkDestroyImage(device, offscreenPass.color.image, nullptr);
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vkFreeMemory(device, offscreenPass.color.mem, nullptr);
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vkDestroyImageView(device, offscreenPass.depth.view, nullptr);
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vkDestroyImage(device, offscreenPass.depth.image, nullptr);
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vkFreeMemory(device, offscreenPass.depth.mem, nullptr);
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vkDestroyRenderPass(device, offscreenPass.renderPass, nullptr);
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vkDestroySampler(device, offscreenPass.sampler, nullptr);
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vkDestroyFramebuffer(device, offscreenPass.frameBuffer, nullptr);
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vkDestroyPipeline(device, pipelines.triangle, nullptr);
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vkDestroyPipeline(device, pipelines.triangleOverlay, nullptr);
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vkDestroyPipeline(device, pipelines.triangleConservativeRaster, nullptr);
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vkDestroyPipeline(device, pipelines.fullscreen, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayouts.fullscreen, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayouts.scene, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.scene, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.fullscreen, nullptr);
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uniformBuffers.scene.destroy();
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triangle.vertices.destroy();
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triangle.indices.destroy();
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}
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void getEnabledFeatures()
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{
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enabledFeatures.fillModeNonSolid = deviceFeatures.fillModeNonSolid;
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enabledFeatures.wideLines = deviceFeatures.wideLines;
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}
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/*
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Setup offscreen framebuffer, attachments and render passes for lower resolution rendering of the scene
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*/
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void prepareOffscreen()
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{
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offscreenPass.width = width / ZOOM_FACTOR;
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offscreenPass.height = height / ZOOM_FACTOR;
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// Find a suitable depth format
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VkFormat fbDepthFormat;
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VkBool32 validDepthFormat = vks::tools::getSupportedDepthFormat(physicalDevice, &fbDepthFormat);
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assert(validDepthFormat);
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// Color attachment
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VkImageCreateInfo image = vks::initializers::imageCreateInfo();
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image.imageType = VK_IMAGE_TYPE_2D;
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image.format = FB_COLOR_FORMAT;
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image.extent.width = offscreenPass.width;
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image.extent.height = offscreenPass.height;
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image.extent.depth = 1;
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image.mipLevels = 1;
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image.arrayLayers = 1;
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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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// We will sample directly from the color attachment
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image.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
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VkMemoryAllocateInfo memAlloc = vks::initializers::memoryAllocateInfo();
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VkMemoryRequirements memReqs;
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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &offscreenPass.color.image));
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vkGetImageMemoryRequirements(device, offscreenPass.color.image, &memReqs);
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memAlloc.allocationSize = memReqs.size;
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memAlloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &offscreenPass.color.mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, offscreenPass.color.image, offscreenPass.color.mem, 0));
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VkImageViewCreateInfo colorImageView = vks::initializers::imageViewCreateInfo();
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colorImageView.viewType = VK_IMAGE_VIEW_TYPE_2D;
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colorImageView.format = FB_COLOR_FORMAT;
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colorImageView.subresourceRange = {};
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colorImageView.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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colorImageView.subresourceRange.baseMipLevel = 0;
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colorImageView.subresourceRange.levelCount = 1;
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colorImageView.subresourceRange.baseArrayLayer = 0;
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colorImageView.subresourceRange.layerCount = 1;
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colorImageView.image = offscreenPass.color.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &colorImageView, nullptr, &offscreenPass.color.view));
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// Create sampler to sample from the attachment in the fragment shader
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VkSamplerCreateInfo samplerInfo = vks::initializers::samplerCreateInfo();
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samplerInfo.magFilter = VK_FILTER_NEAREST;
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samplerInfo.minFilter = VK_FILTER_NEAREST;
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samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
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samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
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samplerInfo.addressModeV = samplerInfo.addressModeU;
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samplerInfo.addressModeW = samplerInfo.addressModeU;
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samplerInfo.mipLodBias = 0.0f;
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samplerInfo.maxAnisotropy = 1.0f;
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samplerInfo.minLod = 0.0f;
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samplerInfo.maxLod = 1.0f;
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samplerInfo.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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VK_CHECK_RESULT(vkCreateSampler(device, &samplerInfo, nullptr, &offscreenPass.sampler));
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// Depth stencil attachment
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image.format = fbDepthFormat;
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image.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &offscreenPass.depth.image));
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vkGetImageMemoryRequirements(device, offscreenPass.depth.image, &memReqs);
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memAlloc.allocationSize = memReqs.size;
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memAlloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &offscreenPass.depth.mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, offscreenPass.depth.image, offscreenPass.depth.mem, 0));
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VkImageViewCreateInfo depthStencilView = vks::initializers::imageViewCreateInfo();
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depthStencilView.viewType = VK_IMAGE_VIEW_TYPE_2D;
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depthStencilView.format = fbDepthFormat;
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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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depthStencilView.image = offscreenPass.depth.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &depthStencilView, nullptr, &offscreenPass.depth.view));
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// Create a separate render pass for the offscreen rendering as it may differ from the one used for scene rendering
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std::array<VkAttachmentDescription, 2> attchmentDescriptions = {};
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// Color attachment
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attchmentDescriptions[0].format = FB_COLOR_FORMAT;
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attchmentDescriptions[0].samples = VK_SAMPLE_COUNT_1_BIT;
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attchmentDescriptions[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attchmentDescriptions[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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attchmentDescriptions[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attchmentDescriptions[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attchmentDescriptions[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attchmentDescriptions[0].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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// Depth attachment
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attchmentDescriptions[1].format = fbDepthFormat;
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attchmentDescriptions[1].samples = VK_SAMPLE_COUNT_1_BIT;
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attchmentDescriptions[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attchmentDescriptions[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attchmentDescriptions[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attchmentDescriptions[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attchmentDescriptions[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attchmentDescriptions[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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VkAttachmentReference colorReference = { 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL };
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VkAttachmentReference depthReference = { 1, 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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// Use 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_FRAGMENT_SHADER_BIT;
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dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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dependencies[0].srcAccessMask = VK_ACCESS_SHADER_READ_BIT;
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dependencies[0].dstAccessMask = 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_FRAGMENT_SHADER_BIT;
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dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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dependencies[1].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
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dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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// Create the actual renderpass
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VkRenderPassCreateInfo renderPassInfo = {};
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renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
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renderPassInfo.attachmentCount = static_cast<uint32_t>(attchmentDescriptions.size());
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renderPassInfo.pAttachments = attchmentDescriptions.data();
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renderPassInfo.subpassCount = 1;
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renderPassInfo.pSubpasses = &subpassDescription;
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renderPassInfo.dependencyCount = static_cast<uint32_t>(dependencies.size());
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renderPassInfo.pDependencies = dependencies.data();
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VK_CHECK_RESULT(vkCreateRenderPass(device, &renderPassInfo, nullptr, &offscreenPass.renderPass));
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VkImageView attachments[2];
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attachments[0] = offscreenPass.color.view;
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attachments[1] = offscreenPass.depth.view;
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VkFramebufferCreateInfo fbufCreateInfo = vks::initializers::framebufferCreateInfo();
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fbufCreateInfo.renderPass = offscreenPass.renderPass;
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fbufCreateInfo.attachmentCount = 2;
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fbufCreateInfo.pAttachments = attachments;
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fbufCreateInfo.width = offscreenPass.width;
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fbufCreateInfo.height = offscreenPass.height;
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fbufCreateInfo.layers = 1;
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VK_CHECK_RESULT(vkCreateFramebuffer(device, &fbufCreateInfo, nullptr, &offscreenPass.frameBuffer));
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// Fill a descriptor for later use in a descriptor set
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offscreenPass.descriptor.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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offscreenPass.descriptor.imageView = offscreenPass.color.view;
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offscreenPass.descriptor.sampler = offscreenPass.sampler;
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}
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void buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i) {
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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/*
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First render pass: Render a low res triangle to an offscreen framebuffer to use for visualization in second pass
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*/
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{
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VkClearValue clearValues[2];
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clearValues[0].color = { { 0.25f, 0.25f, 0.25f, 0.0f } };
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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 = offscreenPass.renderPass;
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renderPassBeginInfo.framebuffer = offscreenPass.frameBuffer;
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renderPassBeginInfo.renderArea.extent.width = offscreenPass.width;
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renderPassBeginInfo.renderArea.extent.height = offscreenPass.height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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VkViewport viewport = vks::initializers::viewport((float)offscreenPass.width, (float)offscreenPass.height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D(offscreenPass.width, offscreenPass.height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.scene, 0, nullptr);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, conservativeRasterEnabled ? pipelines.triangleConservativeRaster : pipelines.triangle);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &triangle.vertices.buffer, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], triangle.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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vkCmdDrawIndexed(drawCmdBuffers[i], triangle.indexCount, 1, 0, 0, 0);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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}
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/*
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Note: Explicit synchronization is not required between the render pass, as this is done implicit via sub pass dependencies
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*/
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/*
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Second render pass: Render scene with conservative rasterization
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*/
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{
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VkClearValue clearValues[2];
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clearValues[0].color = { { 0.25f, 0.25f, 0.25f, 0.25f } };
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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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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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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// Low-res triangle from offscreen framebuffer
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.fullscreen);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.fullscreen, 0, 1, &descriptorSets.fullscreen, 0, nullptr);
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vkCmdDraw(drawCmdBuffers[i], 3, 1, 0, 0);
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// Overlay actual triangle
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &triangle.vertices.buffer, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], triangle.indices.buffer, 0, VK_INDEX_TYPE_UINT32);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.triangleOverlay);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.scene, 0, nullptr);
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vkCmdDraw(drawCmdBuffers[i], 3, 1, 0, 0);
|
|
|
|
drawUI(drawCmdBuffers[i]);
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
}
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
void loadAssets()
|
|
{
|
|
// Create a single triangle
|
|
struct Vertex {
|
|
float position[3];
|
|
float color[3];
|
|
};
|
|
|
|
std::vector<Vertex> vertexBuffer = {
|
|
{ { 1.0f, 1.0f, 0.0f }, { 1.0f, 0.0f, 0.0f } },
|
|
{ { -1.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 0.0f } },
|
|
{ { 0.0f, -1.0f, 0.0f }, { 0.0f, 0.0f, 1.0f } }
|
|
};
|
|
uint32_t vertexBufferSize = static_cast<uint32_t>(vertexBuffer.size()) * sizeof(Vertex);
|
|
std::vector<uint32_t> indexBuffer = { 0, 1, 2 };
|
|
triangle.indexCount = static_cast<uint32_t>(indexBuffer.size());
|
|
uint32_t indexBufferSize = triangle.indexCount * sizeof(uint32_t);
|
|
|
|
struct StagingBuffers {
|
|
vks::Buffer vertices;
|
|
vks::Buffer indices;
|
|
} stagingBuffers;
|
|
|
|
// Host visible source buffers (staging)
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&stagingBuffers.vertices,
|
|
vertexBufferSize,
|
|
vertexBuffer.data()));
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&stagingBuffers.indices,
|
|
indexBufferSize,
|
|
indexBuffer.data()));
|
|
|
|
// Device local destination buffers
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
|
|
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
|
|
&triangle.vertices,
|
|
vertexBufferSize));
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_INDEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT,
|
|
VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
|
|
&triangle.indices,
|
|
indexBufferSize));
|
|
|
|
// Copy from host do device
|
|
vulkanDevice->copyBuffer(&stagingBuffers.vertices, &triangle.vertices, queue);
|
|
vulkanDevice->copyBuffer(&stagingBuffers.indices, &triangle.indices, queue);
|
|
|
|
// Clean up
|
|
stagingBuffers.vertices.destroy();
|
|
stagingBuffers.indices.destroy();
|
|
}
|
|
|
|
void setupDescriptorPool()
|
|
{
|
|
std::vector<VkDescriptorPoolSize> poolSizes = {
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 3),
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2)
|
|
};
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo =
|
|
vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
}
|
|
|
|
void setupDescriptorSetLayout()
|
|
{
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings;
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout;
|
|
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo;
|
|
|
|
// Scene rendering
|
|
setLayoutBindings = {
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0), // Binding 0: Vertex shader uniform buffer
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1), // Binding 1: Fragment shader image sampler
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_FRAGMENT_BIT, 2) // Binding 2: Fragment shader uniform buffer
|
|
};
|
|
descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings.data(), static_cast<uint32_t>(setLayoutBindings.size()));
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayouts.scene));
|
|
pPipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayouts.scene, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.scene));
|
|
|
|
// Fullscreen pass
|
|
setLayoutBindings = {
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0), // Binding 0: Vertex shader uniform buffer
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1) // Binding 1: Fragment shader image sampler
|
|
};
|
|
descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings.data(), static_cast<uint32_t>(setLayoutBindings.size()));
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayouts.fullscreen));
|
|
pPipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayouts.fullscreen, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayouts.fullscreen));
|
|
}
|
|
|
|
void setupDescriptorSet()
|
|
{
|
|
VkDescriptorSetAllocateInfo descriptorSetAllocInfo;
|
|
|
|
// Scene rendering
|
|
descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.scene, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.scene));
|
|
std::vector<VkWriteDescriptorSet> offScreenWriteDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSets.scene, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.scene.descriptor),
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(offScreenWriteDescriptorSets.size()), offScreenWriteDescriptorSets.data(), 0, nullptr);
|
|
|
|
// Fullscreen pass
|
|
descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.fullscreen, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.fullscreen));
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSets.fullscreen, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &offscreenPass.descriptor),
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI =
|
|
vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
|
|
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState =
|
|
vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
|
|
|
VkPipelineColorBlendStateCreateInfo colorBlendStateCI =
|
|
vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
|
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI =
|
|
vks::initializers::pipelineDepthStencilStateCreateInfo(VK_FALSE, VK_FALSE, 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);
|
|
|
|
std::vector<VkDynamicState> dynamicStateEnables = {
|
|
VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR,
|
|
};
|
|
VkPipelineDynamicStateCreateInfo dynamicStateCI =
|
|
vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
|
|
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vks::initializers::pipelineCreateInfo(pipelineLayouts.fullscreen, renderPass, 0);
|
|
|
|
VkPipelineRasterizationStateCreateInfo rasterizationStateCI =
|
|
vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_CLOCKWISE, 0);
|
|
|
|
/*
|
|
Conservative rasterization setup
|
|
*/
|
|
|
|
/*
|
|
Get device properties for conservative rasterization
|
|
Requires VK_KHR_get_physical_device_properties2 and manual function pointer creation
|
|
*/
|
|
PFN_vkGetPhysicalDeviceProperties2KHR vkGetPhysicalDeviceProperties2KHR = reinterpret_cast<PFN_vkGetPhysicalDeviceProperties2KHR>(vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceProperties2KHR"));
|
|
assert(vkGetPhysicalDeviceProperties2KHR);
|
|
VkPhysicalDeviceProperties2KHR deviceProps2{};
|
|
conservativeRasterProps.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_CONSERVATIVE_RASTERIZATION_PROPERTIES_EXT;
|
|
deviceProps2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2_KHR;
|
|
deviceProps2.pNext = &conservativeRasterProps;
|
|
vkGetPhysicalDeviceProperties2KHR(physicalDevice, &deviceProps2);
|
|
|
|
// Vertex bindings and attributes
|
|
std::vector<VkVertexInputBindingDescription> vertexInputBindings = {
|
|
vks::initializers::vertexInputBindingDescription(0, sizeof(Vertex), 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: 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();
|
|
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyStateCI;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationStateCI;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendStateCI;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleStateCI;
|
|
pipelineCreateInfo.pViewportState = &viewportStateCI;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilStateCI;
|
|
pipelineCreateInfo.pDynamicState = &dynamicStateCI;
|
|
pipelineCreateInfo.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
|
|
// Full screen pass
|
|
shaderStages[0] = loadShader(getShadersPath() + "conservativeraster/fullscreen.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "conservativeraster/fullscreen.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
// Empty vertex input state (full screen triangle generated in vertex shader)
|
|
VkPipelineVertexInputStateCreateInfo emptyInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
pipelineCreateInfo.pVertexInputState = &emptyInputState;
|
|
pipelineCreateInfo.layout = pipelineLayouts.fullscreen;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.fullscreen));
|
|
|
|
pipelineCreateInfo.pVertexInputState = &vertexInputState;
|
|
pipelineCreateInfo.layout = pipelineLayouts.scene;
|
|
|
|
// Original triangle outline
|
|
// TODO: Check support for lines
|
|
rasterizationStateCI.lineWidth = 2.0f;
|
|
rasterizationStateCI.polygonMode = VK_POLYGON_MODE_LINE;
|
|
shaderStages[0] = loadShader(getShadersPath() + "conservativeraster/triangle.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "conservativeraster/triangleoverlay.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.triangleOverlay));
|
|
|
|
pipelineCreateInfo.renderPass = offscreenPass.renderPass;
|
|
|
|
/*
|
|
Triangle rendering
|
|
*/
|
|
rasterizationStateCI.polygonMode = VK_POLYGON_MODE_FILL;
|
|
shaderStages[0] = loadShader(getShadersPath() + "conservativeraster/triangle.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "conservativeraster/triangle.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
/*
|
|
Basic pipeline
|
|
*/
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.triangle));
|
|
|
|
/*
|
|
Pipeline with conservative rasterization enabled
|
|
*/
|
|
VkPipelineRasterizationConservativeStateCreateInfoEXT conservativeRasterStateCI{};
|
|
conservativeRasterStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_CONSERVATIVE_STATE_CREATE_INFO_EXT;
|
|
conservativeRasterStateCI.conservativeRasterizationMode = VK_CONSERVATIVE_RASTERIZATION_MODE_OVERESTIMATE_EXT;
|
|
conservativeRasterStateCI.extraPrimitiveOverestimationSize = conservativeRasterProps.maxExtraPrimitiveOverestimationSize;
|
|
|
|
// Conservative rasterization state has to be chained into the pipeline rasterization state create info structure
|
|
rasterizationStateCI.pNext = &conservativeRasterStateCI;
|
|
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.triangleConservativeRaster));
|
|
}
|
|
|
|
// 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,
|
|
&uniformBuffers.scene,
|
|
sizeof(uboScene)));
|
|
VK_CHECK_RESULT(uniformBuffers.scene.map());
|
|
updateUniformBuffersScene();
|
|
}
|
|
|
|
void updateUniformBuffersScene()
|
|
{
|
|
uboScene.projection = camera.matrices.perspective;
|
|
uboScene.model = camera.matrices.view;
|
|
memcpy(uniformBuffers.scene.mapped, &uboScene, sizeof(uboScene));
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadAssets();
|
|
prepareOffscreen();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
if (camera.updated)
|
|
updateUniformBuffersScene();
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Settings")) {
|
|
if (overlay->checkBox("Conservative rasterization", &conservativeRasterEnabled)) {
|
|
buildCommandBuffers();
|
|
}
|
|
}
|
|
if (overlay->header("Device properties")) {
|
|
overlay->text("maxExtraPrimitiveOverestimationSize: %f", conservativeRasterProps.maxExtraPrimitiveOverestimationSize);
|
|
overlay->text("extraPrimitiveOverestimationSizeGranularity: %f", conservativeRasterProps.extraPrimitiveOverestimationSizeGranularity);
|
|
overlay->text("primitiveUnderestimation: %s", conservativeRasterProps.primitiveUnderestimation ? "yes" : "no");
|
|
overlay->text("conservativePointAndLineRasterization: %s", conservativeRasterProps.conservativePointAndLineRasterization ? "yes" : "no");
|
|
overlay->text("degenerateTrianglesRasterized: %s", conservativeRasterProps.degenerateTrianglesRasterized ? "yes" : "no");
|
|
overlay->text("degenerateLinesRasterized: %s", conservativeRasterProps.degenerateLinesRasterized ? "yes" : "no");
|
|
overlay->text("fullyCoveredFragmentShaderInputVariable: %s", conservativeRasterProps.fullyCoveredFragmentShaderInputVariable ? "yes" : "no");
|
|
overlay->text("conservativeRasterizationPostDepthCoverage: %s", conservativeRasterProps.conservativeRasterizationPostDepthCoverage ? "yes" : "no");
|
|
}
|
|
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|