Reworked UI overlay class (no longer using separate render pass + submits)
Updated to support ImGui 1.62 Refs #496
This commit is contained in:
saschawillems
parent
3bbf0d8f29
commit
8a61105ec6
4 changed files with 76 additions and 288 deletions
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@ -13,7 +13,6 @@ namespace vks
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UIOverlay::UIOverlay(vks::UIOverlayCreateInfo createInfo)
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{
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this->createInfo = createInfo;
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this->renderPass = createInfo.renderPass;
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#if defined(__ANDROID__)
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if (vks::android::screenDensity >= ACONFIGURATION_DENSITY_XXHIGH) {
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@ -28,6 +27,7 @@ namespace vks
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#endif
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// Init ImGui
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ImGui::CreateContext();
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// Color scheme
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ImGuiStyle& style = ImGui::GetStyle();
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style.Colors[ImGuiCol_TitleBg] = ImVec4(1.0f, 0.0f, 0.0f, 1.0f);
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@ -43,17 +43,13 @@ namespace vks
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io.DisplaySize = ImVec2((float)(createInfo.width), (float)(createInfo.height));
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io.FontGlobalScale = scale;
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cmdBuffers.resize(createInfo.framebuffers.size());
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prepareResources();
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if (createInfo.renderPass == VK_NULL_HANDLE) {
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prepareRenderPass();
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}
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preparePipeline();
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}
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/** Free up all Vulkan resources acquired by the UI overlay */
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UIOverlay::~UIOverlay()
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{
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ImGui::DestroyContext();
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vertexBuffer.destroy();
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indexBuffer.destroy();
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vkDestroyImageView(createInfo.device->logicalDevice, fontView, nullptr);
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@ -63,14 +59,7 @@ namespace vks
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vkDestroyDescriptorSetLayout(createInfo.device->logicalDevice, descriptorSetLayout, nullptr);
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vkDestroyDescriptorPool(createInfo.device->logicalDevice, descriptorPool, nullptr);
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vkDestroyPipelineLayout(createInfo.device->logicalDevice, pipelineLayout, nullptr);
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vkDestroyPipelineCache(createInfo.device->logicalDevice, pipelineCache, nullptr);
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vkDestroyPipeline(createInfo.device->logicalDevice, pipeline, nullptr);
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if (createInfo.renderPass == VK_NULL_HANDLE) {
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vkDestroyRenderPass(createInfo.device->logicalDevice, renderPass, nullptr);
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}
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vkFreeCommandBuffers(createInfo.device->logicalDevice, commandPool, static_cast<uint32_t>(cmdBuffers.size()), cmdBuffers.data());
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vkDestroyCommandPool(createInfo.device->logicalDevice, commandPool, nullptr);
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vkDestroyFence(createInfo.device->logicalDevice, fence, nullptr);
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}
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/** Prepare all vulkan resources required to render the UI overlay */
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@ -185,17 +174,6 @@ namespace vks
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samplerInfo.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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VK_CHECK_RESULT(vkCreateSampler(createInfo.device->logicalDevice, &samplerInfo, nullptr, &sampler));
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// Command buffer
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VkCommandPoolCreateInfo cmdPoolInfo = {};
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cmdPoolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
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cmdPoolInfo.queueFamilyIndex = createInfo.device->queueFamilyIndices.graphics;
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cmdPoolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
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VK_CHECK_RESULT(vkCreateCommandPool(createInfo.device->logicalDevice, &cmdPoolInfo, nullptr, &commandPool));
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VkCommandBufferAllocateInfo cmdBufAllocateInfo =
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vks::initializers::commandBufferAllocateInfo(commandPool, VK_COMMAND_BUFFER_LEVEL_PRIMARY, static_cast<uint32_t>(cmdBuffers.size()));
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VK_CHECK_RESULT(vkAllocateCommandBuffers(createInfo.device->logicalDevice, &cmdBufAllocateInfo, cmdBuffers.data()));
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// Descriptor pool
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std::vector<VkDescriptorPoolSize> poolSizes = {
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1)
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@ -222,12 +200,11 @@ namespace vks
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vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &fontDescriptor)
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};
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vkUpdateDescriptorSets(createInfo.device->logicalDevice, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
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}
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// Pipeline cache
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VkPipelineCacheCreateInfo pipelineCacheCreateInfo = {};
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pipelineCacheCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
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VK_CHECK_RESULT(vkCreatePipelineCache(createInfo.device->logicalDevice, &pipelineCacheCreateInfo, nullptr, &pipelineCache));
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/** Prepare a separate pipeline for the UI overlay rendering decoupled from the main application */
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void UIOverlay::preparePipeline(const VkPipelineCache pipelineCache, const VkRenderPass renderPass)
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{
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// Pipeline layout
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// Push constants for UI rendering parameters
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VkPushConstantRange pushConstantRange = vks::initializers::pushConstantRange(VK_SHADER_STAGE_VERTEX_BIT, sizeof(PushConstBlock), 0);
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@ -236,14 +213,6 @@ namespace vks
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pipelineLayoutCreateInfo.pPushConstantRanges = &pushConstantRange;
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VK_CHECK_RESULT(vkCreatePipelineLayout(createInfo.device->logicalDevice, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
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// Command buffer execution fence
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VkFenceCreateInfo fenceCreateInfo = vks::initializers::fenceCreateInfo();
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VK_CHECK_RESULT(vkCreateFence(createInfo.device->logicalDevice, &fenceCreateInfo, nullptr, &fence));
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}
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/** Prepare a separate pipeline for the UI overlay rendering decoupled from the main application */
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void UIOverlay::preparePipeline()
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{
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// Setup graphics pipeline for UI rendering
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VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
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vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
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@ -278,7 +247,7 @@ namespace vks
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vks::initializers::pipelineColorBlendStateCreateInfo(static_cast<uint32_t>(blendStates.size()), blendStates.data());
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VkPipelineDepthStencilStateCreateInfo depthStencilState =
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vks::initializers::pipelineDepthStencilStateCreateInfo(VK_FALSE, VK_FALSE, VK_COMPARE_OP_LESS_OR_EQUAL);
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vks::initializers::pipelineDepthStencilStateCreateInfo(VK_FALSE, VK_FALSE, VK_COMPARE_OP_ALWAYS);
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VkPipelineViewportStateCreateInfo viewportState =
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vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
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@ -326,183 +295,22 @@ namespace vks
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VK_CHECK_RESULT(vkCreateGraphicsPipelines(createInfo.device->logicalDevice, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipeline));
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}
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/** Prepare a separate render pass for rendering the UI as an overlay */
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void UIOverlay::prepareRenderPass()
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{
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VkAttachmentDescription attachments[2] = {};
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// Color attachment
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attachments[0].format = createInfo.colorformat;
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attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
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attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
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attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachments[0].initialLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
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attachments[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
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// Depth attachment
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attachments[1].format = createInfo.depthformat;
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attachments[1].samples = VK_SAMPLE_COUNT_1_BIT;
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attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachments[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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VkAttachmentReference colorReference = {};
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colorReference.attachment = 0;
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colorReference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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VkAttachmentReference depthReference = {};
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depthReference.attachment = 1;
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depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
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VkSubpassDependency subpassDependencies[2] = {};
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// Transition from final to initial (VK_SUBPASS_EXTERNAL refers to all commmands executed outside of the actual renderpass)
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subpassDependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
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subpassDependencies[0].dstSubpass = 0;
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subpassDependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
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subpassDependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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subpassDependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
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subpassDependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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subpassDependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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// Transition from initial to final
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subpassDependencies[1].srcSubpass = 0;
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subpassDependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
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subpassDependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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subpassDependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
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subpassDependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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subpassDependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
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subpassDependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
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VkSubpassDescription subpassDescription = {};
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subpassDescription.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
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subpassDescription.flags = 0;
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subpassDescription.inputAttachmentCount = 0;
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subpassDescription.pInputAttachments = NULL;
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subpassDescription.colorAttachmentCount = 1;
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subpassDescription.pColorAttachments = &colorReference;
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subpassDescription.pResolveAttachments = NULL;
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subpassDescription.pDepthStencilAttachment = &depthReference;
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subpassDescription.preserveAttachmentCount = 0;
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subpassDescription.pPreserveAttachments = NULL;
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VkRenderPassCreateInfo renderPassInfo = {};
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renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
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renderPassInfo.pNext = NULL;
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renderPassInfo.attachmentCount = 2;
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renderPassInfo.pAttachments = attachments;
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renderPassInfo.subpassCount = 1;
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renderPassInfo.pSubpasses = &subpassDescription;
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renderPassInfo.dependencyCount = 2;
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renderPassInfo.pDependencies = subpassDependencies;
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VK_CHECK_RESULT(vkCreateRenderPass(createInfo.device->logicalDevice, &renderPassInfo, nullptr, &renderPass));
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}
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/** Update the command buffers to reflect UI changes */
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void UIOverlay::updateCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.extent.width = createInfo.width;
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renderPassBeginInfo.renderArea.extent.height = createInfo.height;
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renderPassBeginInfo.clearValueCount = static_cast<uint32_t>(createInfo.clearValues.size());
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renderPassBeginInfo.pClearValues = createInfo.clearValues.data();
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ImGuiIO& io = ImGui::GetIO();
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for (size_t i = 0; i < cmdBuffers.size(); ++i) {
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renderPassBeginInfo.framebuffer = createInfo.framebuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(cmdBuffers[i], &cmdBufInfo));
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if (vks::debugmarker::active) {
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vks::debugmarker::beginRegion(cmdBuffers[i], "UI overlay", glm::vec4(1.0f, 0.94f, 0.3f, 1.0f));
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}
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vkCmdBeginRenderPass(cmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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if (createInfo.targetSubpass > 0) {
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for (uint32_t j = 0; j < createInfo.targetSubpass; j++) {
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vkCmdNextSubpass(cmdBuffers[i], VK_SUBPASS_CONTENTS_INLINE);
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}
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}
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vkCmdBindPipeline(cmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
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vkCmdBindDescriptorSets(cmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(cmdBuffers[i], 0, 1, &vertexBuffer.buffer, offsets);
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vkCmdBindIndexBuffer(cmdBuffers[i], indexBuffer.buffer, 0, VK_INDEX_TYPE_UINT16);
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VkViewport viewport = vks::initializers::viewport(ImGui::GetIO().DisplaySize.x, ImGui::GetIO().DisplaySize.y, 0.0f, 1.0f);
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vkCmdSetViewport(cmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D((int32_t)ImGui::GetIO().DisplaySize.x, (int32_t)ImGui::GetIO().DisplaySize.y, 0, 0);
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vkCmdSetScissor(cmdBuffers[i], 0, 1, &scissor);
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// UI scale and translate via push constants
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pushConstBlock.scale = glm::vec2(2.0f / io.DisplaySize.x, 2.0f / io.DisplaySize.y);
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pushConstBlock.translate = glm::vec2(-1.0f);
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vkCmdPushConstants(cmdBuffers[i], pipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(PushConstBlock), &pushConstBlock);
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// Render commands
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ImDrawData* imDrawData = ImGui::GetDrawData();
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int32_t vertexOffset = 0;
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int32_t indexOffset = 0;
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for (int32_t j = 0; j < imDrawData->CmdListsCount; j++) {
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const ImDrawList* cmd_list = imDrawData->CmdLists[j];
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for (int32_t k = 0; k < cmd_list->CmdBuffer.Size; k++) {
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const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[k];
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VkRect2D scissorRect;
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scissorRect.offset.x = std::max((int32_t)(pcmd->ClipRect.x), 0);
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scissorRect.offset.y = std::max((int32_t)(pcmd->ClipRect.y), 0);
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scissorRect.extent.width = (uint32_t)(pcmd->ClipRect.z - pcmd->ClipRect.x);
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scissorRect.extent.height = (uint32_t)(pcmd->ClipRect.w - pcmd->ClipRect.y);
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vkCmdSetScissor(cmdBuffers[i], 0, 1, &scissorRect);
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vkCmdDrawIndexed(cmdBuffers[i], pcmd->ElemCount, 1, indexOffset, vertexOffset, 0);
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indexOffset += pcmd->ElemCount;
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}
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vertexOffset += cmd_list->VtxBuffer.Size;
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}
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// Add empty subpasses if requested
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if (createInfo.subpassCount > 1) {
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for (uint32_t j = createInfo.targetSubpass+1; j < createInfo.subpassCount; j++) {
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vkCmdNextSubpass(cmdBuffers[i], VK_SUBPASS_CONTENTS_INLINE);
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}
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}
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vkCmdEndRenderPass(cmdBuffers[i]);
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if (vks::debugmarker::active) {
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vks::debugmarker::endRegion(cmdBuffers[i]);
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}
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VK_CHECK_RESULT(vkEndCommandBuffer(cmdBuffers[i]));
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}
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}
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/** Update vertex and index buffer containing the imGui elements when required */
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void UIOverlay::update()
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bool UIOverlay::update()
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{
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ImDrawData* imDrawData = ImGui::GetDrawData();
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bool updateCmdBuffers = false;
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if (!imDrawData) { return; };
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if (!imDrawData) { return false; };
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// Note: Alignment is done inside buffer creation
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VkDeviceSize vertexBufferSize = imDrawData->TotalVtxCount * sizeof(ImDrawVert);
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VkDeviceSize indexBufferSize = imDrawData->TotalIdxCount * sizeof(ImDrawIdx);
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// Update buffers only if vertex or index count has been changed compared to current buffer size
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if ((vertexBufferSize == 0) || (indexBufferSize == 0)) {
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return false;
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}
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// Vertex buffer
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if ((vertexBuffer.buffer == VK_NULL_HANDLE) || (vertexCount != imDrawData->TotalVtxCount)) {
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@ -542,35 +350,55 @@ namespace vks
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vertexBuffer.flush();
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indexBuffer.flush();
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if (updateCmdBuffers) {
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updateCommandBuffers();
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}
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return updateCmdBuffers;
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}
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void UIOverlay::resize(uint32_t width, uint32_t height, std::vector<VkFramebuffer> framebuffers)
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void UIOverlay::draw(const VkCommandBuffer commandBuffer)
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{
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ImGuiIO& io = ImGui::GetIO();
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io.DisplaySize = ImVec2((float)(width), (float)(height));
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createInfo.width = width;
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createInfo.height = height;
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createInfo.framebuffers = framebuffers;
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updateCommandBuffers();
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}
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ImDrawData* imDrawData = ImGui::GetDrawData();
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int32_t vertexOffset = 0;
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int32_t indexOffset = 0;
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/** Submit the overlay command buffers to a queue */
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void UIOverlay::submit(VkQueue queue, uint32_t bufferindex, VkSubmitInfo submitInfo)
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{
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if (!visible) {
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if ((!imDrawData) || (imDrawData->CmdListsCount == 0)) {
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return;
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}
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submitInfo.pCommandBuffers = &cmdBuffers[bufferindex];
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submitInfo.commandBufferCount = 1;
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ImGuiIO& io = ImGui::GetIO();
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VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, fence));
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pushConstBlock.scale = glm::vec2(2.0f / io.DisplaySize.x, 2.0f / io.DisplaySize.y);
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pushConstBlock.translate = glm::vec2(-1.0f);
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vkCmdPushConstants(commandBuffer, pipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(PushConstBlock), &pushConstBlock);
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VK_CHECK_RESULT(vkWaitForFences(createInfo.device->logicalDevice, 1, &fence, VK_TRUE, UINT64_MAX));
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VK_CHECK_RESULT(vkResetFences(createInfo.device->logicalDevice, 1, &fence));
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vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
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vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(commandBuffer, 0, 1, &vertexBuffer.buffer, offsets);
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vkCmdBindIndexBuffer(commandBuffer, indexBuffer.buffer, 0, VK_INDEX_TYPE_UINT16);
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for (int32_t i = 0; i < imDrawData->CmdListsCount; i++)
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{
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const ImDrawList* cmd_list = imDrawData->CmdLists[i];
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for (int32_t j = 0; j < cmd_list->CmdBuffer.Size; j++)
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{
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const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[j];
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VkRect2D scissorRect;
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scissorRect.offset.x = std::max((int32_t)(pcmd->ClipRect.x), 0);
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scissorRect.offset.y = std::max((int32_t)(pcmd->ClipRect.y), 0);
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scissorRect.extent.width = (uint32_t)(pcmd->ClipRect.z - pcmd->ClipRect.x);
|
||||
scissorRect.extent.height = (uint32_t)(pcmd->ClipRect.w - pcmd->ClipRect.y);
|
||||
vkCmdSetScissor(commandBuffer, 0, 1, &scissorRect);
|
||||
vkCmdDrawIndexed(commandBuffer, pcmd->ElemCount, 1, indexOffset, vertexOffset, 0);
|
||||
indexOffset += pcmd->ElemCount;
|
||||
}
|
||||
vertexOffset += cmd_list->VtxBuffer.Size;
|
||||
}
|
||||
}
|
||||
|
||||
void UIOverlay::resize(uint32_t width, uint32_t height)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.DisplaySize = ImVec2((float)(width), (float)(height));
|
||||
}
|
||||
|
||||
bool UIOverlay::header(const char *caption)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue