Mobile versionMein Problem
I Erstellen Sie einen Renderpass mit zwei Unterpassen zum Rendern von 3D-Objekten und Imgui. Ich verweise auf die offizielle Dokumentation und beende das Programm, aber das Ergebnis ist falsch. Im glfw-Fenster werden nur 3D-Objekte angezeigt. Ich habe überprüft und festgestellt, dass der Befehl zum Rendern von Imgui geschrieben wurde korrekt in den Befehlspuffer einfügen. Ich möchte wissen, wie man das Problem löst Es gibt einige Codes wie folgt.
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void createRenderPass() {
VkAttachmentDescription colorAttachment = {};
colorAttachment.format = swapChainImageFormat;
colorAttachment.samples = msaaSamples;//
colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
colorAttachment.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentDescription depthAttachment = {};
depthAttachment.format = findDepthFormat();
depthAttachment.samples = msaaSamples;//
depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkAttachmentDescription colorAttachmentResolve = {};
colorAttachmentResolve.format = swapChainImageFormat;
colorAttachmentResolve.samples = VK_SAMPLE_COUNT_1_BIT;
colorAttachmentResolve.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
colorAttachmentResolve.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
colorAttachmentResolve.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
colorAttachmentResolve.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
colorAttachmentResolve.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
colorAttachmentResolve.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; //VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
VkAttachmentDescription imguiColorAttachment = {};
imguiColorAttachment.format = swapChainImageFormat;
imguiColorAttachment.samples = VK_SAMPLE_COUNT_1_BIT;
imguiColorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
imguiColorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
imguiColorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
imguiColorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
imguiColorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
imguiColorAttachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
VkAttachmentReference colorAttachmentRef = {};
colorAttachmentRef.attachment = 0;
colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentReference depthAttachmentRef = {};
depthAttachmentRef.attachment = 1;
depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkAttachmentReference colorAttachmentResolveRef = {};
colorAttachmentResolveRef.attachment = 2;
colorAttachmentResolveRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkAttachmentReference imguiColorAttachmentRef = {};
colorAttachmentResolveRef.attachment = 3;
colorAttachmentResolveRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkSubpassDescription subpass = {};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = 1;
subpass.pColorAttachments = &colorAttachmentRef;
subpass.pDepthStencilAttachment = &depthAttachmentRef;
subpass.pResolveAttachments = &colorAttachmentResolveRef;
VkSubpassDescription subpassImGui = {};
subpassImGui.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpassImGui.colorAttachmentCount = 1;
subpassImGui.pColorAttachments = &imguiColorAttachmentRef;
std::array attachments = { colorAttachment, depthAttachment, colorAttachmentResolve ,imguiColorAttachment};
std::arraysubpasses = { subpass, subpassImGui };
VkRenderPassCreateInfo renderPassInfo = {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
renderPassInfo.attachmentCount = static_cast(attachments.size());
renderPassInfo.pAttachments = attachments.data();
renderPassInfo.subpassCount = subpasses.size();
renderPassInfo.pSubpasses = subpasses.data();
VkSubpassDependency dependency = {};
dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
dependency.dstSubpass = 0;
dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.srcAccessMask = 0;
dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
VkSubpassDependency dependency1 = {};
dependency1.srcSubpass = 0,
dependency1.dstSubpass = 1,
dependency1.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency1.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependency1.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependency1.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
std::arraydependencys = {dependency, dependency1};
renderPassInfo.dependencyCount = dependencys.size();
renderPassInfo.pDependencies = dependencys.data();
if (vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass) != VK_SUCCESS) {
throw std::runtime_error("failed to create render pass!");
}
}
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void recordCommandBuffer(int i){
vkResetCommandBuffer(commandBuffers[i], 0);
auto draw_data=xgImgui->startFrame();
VkCommandBufferBeginInfo beginInfo = {};
beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
beginInfo.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT;
beginInfo.pInheritanceInfo = nullptr; // Optional
vkBeginCommandBuffer(commandBuffers[i], &beginInfo);
VkRenderPassBeginInfo renderPassInfo = {};
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
renderPassInfo.renderPass = renderPass;
renderPassInfo.framebuffer = swapChainFramebuffers[i];
renderPassInfo.renderArea.offset = { 0, 0 };
renderPassInfo.renderArea.extent = swapChainExtent;
std::array clearValues = {};
clearValues[0].color = { 0.1f, 0.1f, 0.3f, 0.5f };
clearValues[1].depthStencil = { 1.0f, 0 }; //
clearValues[2].color = { 0.0f, 0.0f, 0.0f, 0.0f }; //
clearValues[3].color = { 0.0f, 0.0f, 0.0f, 0.0f }; //
renderPassInfo.clearValueCount = static_cast(clearValues.size());
renderPassInfo.pClearValues = clearValues.data();
vkCmdBeginRenderPass(commandBuffers[i], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
//渲染期间绑定缓冲区
vkCmdBindPipeline(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphicsPipeline);
VkBuffer vertexBuffers[] = { vertexBuffer };
VkDeviceSize offsets[] = { 0 };
//绑定顶点缓冲区
vkCmdBindVertexBuffers(commandBuffers[i], 0, 1, vertexBuffers, offsets);
vkCmdBindIndexBuffer(commandBuffers[i], indexBuffer, 0, VK_INDEX_TYPE_UINT32);
vkCmdBindDescriptorSets(commandBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
vkCmdDrawIndexed(commandBuffers[i], static_cast(indices.size()), 1, 0, 0, 0);
//vkCmdDraw(commandBuffers[i], static_cast(vertices.size()), 1, 0, 0);
vkCmdNextSubpass(commandBuffers[i], VK_SUBPASS_CONTENTS_INLINE);
xgImgui->recordRenderCommandBuffer(commandBuffers[i],draw_data);
vkCmdEndRenderPass(commandBuffers[i]);
if (vkEndCommandBuffer(commandBuffers[i]) != VK_SUCCESS) {
throw std::runtime_error("failed to record command buffer!");
}
};
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ImDrawData* XgImgui::startFrame()
{
// Start the Dear ImGui frame
ImGui_ImplVulkan_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
static float f = 0.0f;
static int counter = 0;
// Our state
bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
ImGui::End();
ImGui::Render();
ImDrawData* draw_data = ImGui::GetDrawData();
return draw_data;
}
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void XgImgui::recordRenderCommandBuffer(const VkCommandBuffer& commandBuffer, ImDrawData* draw_data)
{
// Record dear imgui primitives into command buffer
ImGui_ImplVulkan_RenderDrawData(draw_data, commandBuffer);
}
