730 lines
32 KiB
C++
730 lines
32 KiB
C++
/*
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* Vulkan Example - Implements a separable two-pass fullscreen blur (also known as bloom)
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*
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* Copyright (C) 2016 - 2023 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 "vulkanexamplebase.h"
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#include "VulkanglTFModel.h"
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#define ENABLE_VALIDATION false
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// Offscreen frame buffer properties
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#define FB_DIM 256
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#define FB_COLOR_FORMAT VK_FORMAT_R8G8B8A8_UNORM
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class VulkanExample : public VulkanExampleBase
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{
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public:
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bool bloom = true;
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vks::TextureCubeMap cubemap;
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struct {
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vkglTF::Model ufo;
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vkglTF::Model ufoGlow;
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vkglTF::Model skyBox;
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} models;
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struct {
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vks::Buffer scene;
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vks::Buffer skyBox;
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vks::Buffer blurParams;
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} uniformBuffers;
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struct UBO {
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glm::mat4 projection;
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glm::mat4 view;
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glm::mat4 model;
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};
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struct UBOBlurParams {
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float blurScale = 1.0f;
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float blurStrength = 1.5f;
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};
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struct {
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UBO scene, skyBox;
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UBOBlurParams blurParams;
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} ubos;
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struct {
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VkPipeline blurVert;
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VkPipeline blurHorz;
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VkPipeline glowPass;
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VkPipeline phongPass;
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VkPipeline skyBox;
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} pipelines;
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struct {
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VkPipelineLayout blur;
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VkPipelineLayout scene;
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} pipelineLayouts;
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struct {
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VkDescriptorSet blurVert;
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VkDescriptorSet blurHorz;
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VkDescriptorSet scene;
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VkDescriptorSet skyBox;
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} descriptorSets;
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struct {
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VkDescriptorSetLayout blur;
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VkDescriptorSetLayout scene;
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} descriptorSetLayouts;
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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 FrameBuffer {
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VkFramebuffer framebuffer;
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FrameBufferAttachment color, depth;
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VkDescriptorImageInfo descriptor;
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};
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struct OffscreenPass {
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int32_t width, height;
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VkRenderPass renderPass;
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VkSampler sampler;
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std::array<FrameBuffer, 2> framebuffers;
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} offscreenPass;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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title = "Bloom (offscreen rendering)";
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timerSpeed *= 0.5f;
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camera.type = Camera::CameraType::lookat;
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camera.setPosition(glm::vec3(0.0f, 0.0f, -10.25f));
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camera.setRotation(glm::vec3(7.5f, -343.0f, 0.0f));
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camera.setPerspective(45.0f, (float)width / (float)height, 0.1f, 256.0f);
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}
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~VulkanExample()
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{
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// Clean up used Vulkan resources
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// Note : Inherited destructor cleans up resources stored in base class
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vkDestroySampler(device, offscreenPass.sampler, nullptr);
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// Frame buffer
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for (auto& framebuffer : offscreenPass.framebuffers)
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{
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// Attachments
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vkDestroyImageView(device, framebuffer.color.view, nullptr);
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vkDestroyImage(device, framebuffer.color.image, nullptr);
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vkFreeMemory(device, framebuffer.color.mem, nullptr);
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vkDestroyImageView(device, framebuffer.depth.view, nullptr);
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vkDestroyImage(device, framebuffer.depth.image, nullptr);
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vkFreeMemory(device, framebuffer.depth.mem, nullptr);
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vkDestroyFramebuffer(device, framebuffer.framebuffer, nullptr);
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}
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vkDestroyRenderPass(device, offscreenPass.renderPass, nullptr);
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vkDestroyPipeline(device, pipelines.blurHorz, nullptr);
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vkDestroyPipeline(device, pipelines.blurVert, nullptr);
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vkDestroyPipeline(device, pipelines.phongPass, nullptr);
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vkDestroyPipeline(device, pipelines.glowPass, nullptr);
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vkDestroyPipeline(device, pipelines.skyBox, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayouts.blur , nullptr);
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vkDestroyPipelineLayout(device, pipelineLayouts.scene, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.blur, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayouts.scene, nullptr);
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// Uniform buffers
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uniformBuffers.scene.destroy();
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uniformBuffers.skyBox.destroy();
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uniformBuffers.blurParams.destroy();
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cubemap.destroy();
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}
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// Setup the offscreen framebuffer for rendering the mirrored scene
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// The color attachment of this framebuffer will then be sampled from
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void prepareOffscreenFramebuffer(FrameBuffer *frameBuf, VkFormat colorFormat, VkFormat depthFormat)
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{
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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 = colorFormat;
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image.extent.width = FB_DIM;
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image.extent.height = FB_DIM;
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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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VkImageViewCreateInfo colorImageView = vks::initializers::imageViewCreateInfo();
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colorImageView.viewType = VK_IMAGE_VIEW_TYPE_2D;
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colorImageView.format = colorFormat;
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colorImageView.flags = 0;
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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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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &frameBuf->color.image));
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vkGetImageMemoryRequirements(device, frameBuf->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, &frameBuf->color.mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, frameBuf->color.image, frameBuf->color.mem, 0));
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colorImageView.image = frameBuf->color.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &colorImageView, nullptr, &frameBuf->color.view));
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// Depth stencil attachment
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image.format = depthFormat;
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image.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
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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 = depthFormat;
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depthStencilView.flags = 0;
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depthStencilView.subresourceRange = {};
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depthStencilView.subresourceRange.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
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if (vks::tools::formatHasStencil(depthFormat)) {
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depthStencilView.subresourceRange.aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
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}
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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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VK_CHECK_RESULT(vkCreateImage(device, &image, nullptr, &frameBuf->depth.image));
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vkGetImageMemoryRequirements(device, frameBuf->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, &frameBuf->depth.mem));
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VK_CHECK_RESULT(vkBindImageMemory(device, frameBuf->depth.image, frameBuf->depth.mem, 0));
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depthStencilView.image = frameBuf->depth.image;
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VK_CHECK_RESULT(vkCreateImageView(device, &depthStencilView, nullptr, &frameBuf->depth.view));
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VkImageView attachments[2];
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attachments[0] = frameBuf->color.view;
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attachments[1] = frameBuf->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 = FB_DIM;
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fbufCreateInfo.height = FB_DIM;
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fbufCreateInfo.layers = 1;
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VK_CHECK_RESULT(vkCreateFramebuffer(device, &fbufCreateInfo, nullptr, &frameBuf->framebuffer));
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// Fill a descriptor for later use in a descriptor set
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frameBuf->descriptor.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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frameBuf->descriptor.imageView = frameBuf->color.view;
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frameBuf->descriptor.sampler = offscreenPass.sampler;
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}
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// Prepare the offscreen framebuffers used for the vertical- and horizontal blur
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void prepareOffscreen()
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{
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offscreenPass.width = FB_DIM;
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offscreenPass.height = FB_DIM;
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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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// 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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// Create sampler to sample from the color attachments
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VkSamplerCreateInfo sampler = vks::initializers::samplerCreateInfo();
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sampler.magFilter = VK_FILTER_LINEAR;
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sampler.minFilter = VK_FILTER_LINEAR;
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sampler.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
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sampler.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
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sampler.addressModeV = sampler.addressModeU;
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sampler.addressModeW = sampler.addressModeU;
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sampler.mipLodBias = 0.0f;
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sampler.maxAnisotropy = 1.0f;
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sampler.minLod = 0.0f;
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sampler.maxLod = 1.0f;
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sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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VK_CHECK_RESULT(vkCreateSampler(device, &sampler, nullptr, &offscreenPass.sampler));
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// Create two frame buffers
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prepareOffscreenFramebuffer(&offscreenPass.framebuffers[0], FB_COLOR_FORMAT, fbDepthFormat);
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prepareOffscreenFramebuffer(&offscreenPass.framebuffers[1], FB_COLOR_FORMAT, fbDepthFormat);
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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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VkClearValue clearValues[2];
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VkViewport viewport;
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VkRect2D scissor;
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/*
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The blur method used in this example is multi pass and renders the vertical blur first and then the horizontal one
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While it's possible to blur in one pass, this method is widely used as it requires far less samples to generate the blur
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*/
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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if (bloom) {
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clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
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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.framebuffers[0].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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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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scissor = vks::initializers::rect2D(offscreenPass.width, offscreenPass.height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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/*
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First render pass: Render glow parts of the model (separate mesh) to an offscreen frame buffer
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*/
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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, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.glowPass);
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models.ufoGlow.draw(drawCmdBuffers[i]);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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/*
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Second render pass: Vertical blur
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Render contents of the first pass into a second framebuffer and apply a vertical blur
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This is the first blur pass, the horizontal blur is applied when rendering on top of the scene
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*/
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renderPassBeginInfo.framebuffer = offscreenPass.framebuffers[1].framebuffer;
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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.blur, 0, 1, &descriptorSets.blurVert, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.blurVert);
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vkCmdDraw(drawCmdBuffers[i], 3, 1, 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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Third render pass: Scene rendering with applied vertical blur
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Renders the scene and the (vertically blurred) contents of the second framebuffer and apply a horizontal blur
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*/
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{
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clearValues[0].color = defaultClearColor;
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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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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// Skybox
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.skyBox, 0, NULL);
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skyBox);
|
|
models.skyBox.draw(drawCmdBuffers[i]);
|
|
|
|
// 3D scene
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.scene, 0, 1, &descriptorSets.scene, 0, NULL);
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.phongPass);
|
|
models.ufo.draw(drawCmdBuffers[i]);
|
|
|
|
if (bloom)
|
|
{
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayouts.blur, 0, 1, &descriptorSets.blurHorz, 0, NULL);
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.blurHorz);
|
|
vkCmdDraw(drawCmdBuffers[i], 3, 1, 0, 0);
|
|
}
|
|
|
|
drawUI(drawCmdBuffers[i]);
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
|
|
}
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
void loadAssets()
|
|
{
|
|
const uint32_t glTFLoadingFlags = vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY;
|
|
models.ufo.loadFromFile(getAssetPath() + "models/retroufo.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
|
models.ufoGlow.loadFromFile(getAssetPath() + "models/retroufo_glow.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
|
models.skyBox.loadFromFile(getAssetPath() + "models/cube.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
|
cubemap.loadFromFile(getAssetPath() + "textures/cubemap_space.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
|
|
}
|
|
|
|
void setupDescriptorPool()
|
|
{
|
|
std::vector<VkDescriptorPoolSize> poolSizes = {
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 8),
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 6)
|
|
};
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 5);
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
}
|
|
|
|
void setupDescriptorSetLayout()
|
|
{
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings;
|
|
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCreateInfo;
|
|
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo;
|
|
|
|
// Fullscreen blur
|
|
setLayoutBindings = {
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_FRAGMENT_BIT, 0), // Binding 0: Fragment shader uniform buffer
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1) // Binding 1: Fragment shader image sampler
|
|
};
|
|
descriptorSetLayoutCreateInfo = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings.data(), static_cast<uint32_t>(setLayoutBindings.size()));
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCreateInfo, nullptr, &descriptorSetLayouts.blur));
|
|
pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayouts.blur, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayouts.blur));
|
|
|
|
// 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 image sampler
|
|
};
|
|
|
|
descriptorSetLayoutCreateInfo = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCreateInfo, nullptr, &descriptorSetLayouts.scene));
|
|
pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayouts.scene, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayouts.scene));
|
|
}
|
|
|
|
void setupDescriptorSet()
|
|
{
|
|
VkDescriptorSetAllocateInfo descriptorSetAllocInfo;
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets;
|
|
|
|
// Full screen blur
|
|
// Vertical
|
|
descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.blur, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.blurVert));
|
|
writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSets.blurVert, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.blurParams.descriptor), // Binding 0: Fragment shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(descriptorSets.blurVert, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &offscreenPass.framebuffers[0].descriptor), // Binding 1: Fragment shader texture sampler
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
// Horizontal
|
|
descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.blur, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.blurHorz));
|
|
writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSets.blurHorz, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.blurParams.descriptor), // Binding 0: Fragment shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(descriptorSets.blurHorz, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &offscreenPass.framebuffers[1].descriptor), // Binding 1: Fragment shader texture sampler
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
|
|
// Scene rendering
|
|
descriptorSetAllocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayouts.scene, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.scene));
|
|
writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSets.scene, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.scene.descriptor) // Binding 0: Vertex shader uniform buffer
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
|
|
// Skybox
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSets.skyBox));
|
|
writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSets.skyBox, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffers.skyBox.descriptor), // Binding 0: Vertex shader uniform buffer
|
|
vks::initializers::writeDescriptorSet(descriptorSets.skyBox, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &cubemap.descriptor), // Binding 1: Fragment shader texture sampler
|
|
};
|
|
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);
|
|
VkPipelineRasterizationStateCreateInfo rasterizationStateCI = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_NONE, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
|
VkPipelineColorBlendStateCreateInfo colorBlendStateCI = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
VkPipelineViewportStateCreateInfo viewportStateCI = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
VkPipelineMultisampleStateCreateInfo multisampleStateCI = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 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 pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayouts.blur, 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();
|
|
|
|
// Blur pipelines
|
|
shaderStages[0] = loadShader(getShadersPath() + "bloom/gaussblur.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "bloom/gaussblur.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
// Empty vertex input state
|
|
VkPipelineVertexInputStateCreateInfo emptyInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
pipelineCI.pVertexInputState = &emptyInputState;
|
|
pipelineCI.layout = pipelineLayouts.blur;
|
|
// Additive blending
|
|
blendAttachmentState.colorWriteMask = 0xF;
|
|
blendAttachmentState.blendEnable = VK_TRUE;
|
|
blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
|
|
blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_DST_ALPHA;
|
|
|
|
// Use specialization constants to select between horizontal and vertical blur
|
|
uint32_t blurdirection = 0;
|
|
VkSpecializationMapEntry specializationMapEntry = vks::initializers::specializationMapEntry(0, 0, sizeof(uint32_t));
|
|
VkSpecializationInfo specializationInfo = vks::initializers::specializationInfo(1, &specializationMapEntry, sizeof(uint32_t), &blurdirection);
|
|
shaderStages[1].pSpecializationInfo = &specializationInfo;
|
|
// Vertical blur pipeline
|
|
pipelineCI.renderPass = offscreenPass.renderPass;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.blurVert));
|
|
// Horizontal blur pipeline
|
|
blurdirection = 1;
|
|
pipelineCI.renderPass = renderPass;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.blurHorz));
|
|
|
|
// Phong pass (3D model)
|
|
pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({vkglTF::VertexComponent::Position, vkglTF::VertexComponent::UV, vkglTF::VertexComponent::Color, vkglTF::VertexComponent::Normal});
|
|
pipelineCI.layout = pipelineLayouts.scene;
|
|
shaderStages[0] = loadShader(getShadersPath() + "bloom/phongpass.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "bloom/phongpass.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
blendAttachmentState.blendEnable = VK_FALSE;
|
|
depthStencilStateCI.depthWriteEnable = VK_TRUE;
|
|
rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT;
|
|
pipelineCI.renderPass = renderPass;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.phongPass));
|
|
|
|
// Color only pass (offscreen blur base)
|
|
shaderStages[0] = loadShader(getShadersPath() + "bloom/colorpass.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "bloom/colorpass.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
pipelineCI.renderPass = offscreenPass.renderPass;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.glowPass));
|
|
|
|
// Skybox (cubemap)
|
|
shaderStages[0] = loadShader(getShadersPath() + "bloom/skybox.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "bloom/skybox.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
depthStencilStateCI.depthWriteEnable = VK_FALSE;
|
|
rasterizationStateCI.cullMode = VK_CULL_MODE_FRONT_BIT;
|
|
pipelineCI.renderPass = renderPass;
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipelines.skyBox));
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Phong and color pass vertex shader uniform buffer
|
|
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(ubos.scene)));
|
|
|
|
// Blur parameters uniform buffers
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBuffers.blurParams,
|
|
sizeof(ubos.blurParams)));
|
|
|
|
// Skybox
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBuffers.skyBox,
|
|
sizeof(ubos.skyBox)));
|
|
|
|
// Map persistent
|
|
VK_CHECK_RESULT(uniformBuffers.scene.map());
|
|
VK_CHECK_RESULT(uniformBuffers.blurParams.map());
|
|
VK_CHECK_RESULT(uniformBuffers.skyBox.map());
|
|
|
|
// Initialize uniform buffers
|
|
updateUniformBuffersScene();
|
|
updateUniformBuffersBlur();
|
|
}
|
|
|
|
// Update uniform buffers for rendering the 3D scene
|
|
void updateUniformBuffersScene()
|
|
{
|
|
// UFO
|
|
ubos.scene.projection = camera.matrices.perspective;
|
|
ubos.scene.view = camera.matrices.view;
|
|
|
|
ubos.scene.model = glm::translate(glm::mat4(1.0f), glm::vec3(sin(glm::radians(timer * 360.0f)) * 0.25f, -1.0f, cos(glm::radians(timer * 360.0f)) * 0.25f));
|
|
ubos.scene.model = glm::rotate(ubos.scene.model, -sinf(glm::radians(timer * 360.0f)) * 0.15f, glm::vec3(1.0f, 0.0f, 0.0f));
|
|
ubos.scene.model = glm::rotate(ubos.scene.model, glm::radians(timer * 360.0f), glm::vec3(0.0f, 1.0f, 0.0f));
|
|
|
|
memcpy(uniformBuffers.scene.mapped, &ubos.scene, sizeof(ubos.scene));
|
|
|
|
// Skybox
|
|
ubos.skyBox.projection = glm::perspective(glm::radians(45.0f), (float)width / (float)height, 0.1f, 256.0f);
|
|
ubos.skyBox.view = glm::mat4(glm::mat3(camera.matrices.view));
|
|
ubos.skyBox.model = glm::mat4(1.0f);
|
|
|
|
memcpy(uniformBuffers.skyBox.mapped, &ubos.skyBox, sizeof(ubos.skyBox));
|
|
}
|
|
|
|
// Update blur pass parameter uniform buffer
|
|
void updateUniformBuffersBlur()
|
|
{
|
|
memcpy(uniformBuffers.blurParams.mapped, &ubos.blurParams, sizeof(ubos.blurParams));
|
|
}
|
|
|
|
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();
|
|
prepareUniformBuffers();
|
|
prepareOffscreen();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
if (!paused || camera.updated)
|
|
{
|
|
updateUniformBuffersScene();
|
|
}
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Settings")) {
|
|
if (overlay->checkBox("Bloom", &bloom)) {
|
|
buildCommandBuffers();
|
|
}
|
|
if (overlay->inputFloat("Scale", &ubos.blurParams.blurScale, 0.1f, 2)) {
|
|
updateUniformBuffersBlur();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|