9a562a5426
* Configure MoltenVK to use a dedicated compute queue for compute[*] examples with sync barriers * Modify descriptorindexing example for iOS and variable descriptor count limitations on MoltenVK * Remove obsolete macOS #ifdefs no longer needed for modern MoltenVK versions * Update iOS project to fix missing vkloader.c reference and revise example list * Set required features and API version for VVL in debugprintf example * Remove unnecessary Apple-specific code from descriptorindexing example * Add Layer Settings capability to VulkanExampleBase::createInstance() * Replace setenv() in examples with Layer Settings configuration for macOS/iOS * Update comments in examples.h and fix missing initializer in computeraytracing example * Update imgui overlay and example to support iOS Simulator * Update more comments in examples.h and remove redundant initializers in deferred* examples * Separate variable descriptor count declarations for apple and non-apple platforms * Consolidate variable descriptor count declarations for apple vs. non-apple platforms * Configure MoltenVK with a dedicated compute queue in VulkanExampleBase() and remove from samples
841 lines
33 KiB
C++
841 lines
33 KiB
C++
/*
|
|
* Vulkan Example - imGui (https://github.com/ocornut/imgui)
|
|
*
|
|
* Copyright (C) 2017-2024 by Sascha Willems - www.saschawillems.de
|
|
*
|
|
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
|
|
*/
|
|
|
|
#include <imgui.h>
|
|
#include "vulkanexamplebase.h"
|
|
#include "VulkanglTFModel.h"
|
|
|
|
// Options and values to display/toggle from the UI
|
|
struct UISettings {
|
|
bool displayModels = true;
|
|
bool displayLogos = true;
|
|
bool displayBackground = true;
|
|
bool animateLight = false;
|
|
float lightSpeed = 0.25f;
|
|
std::array<float, 50> frameTimes{};
|
|
float frameTimeMin = 9999.0f, frameTimeMax = 0.0f;
|
|
float lightTimer = 0.0f;
|
|
} uiSettings;
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ImGUI class
|
|
// ----------------------------------------------------------------------------
|
|
class ImGUI {
|
|
private:
|
|
// Vulkan resources for rendering the UI
|
|
VkSampler sampler;
|
|
vks::Buffer vertexBuffer;
|
|
vks::Buffer indexBuffer;
|
|
int32_t vertexCount = 0;
|
|
int32_t indexCount = 0;
|
|
VkDeviceMemory fontMemory = VK_NULL_HANDLE;
|
|
VkImage fontImage = VK_NULL_HANDLE;
|
|
VkImageView fontView = VK_NULL_HANDLE;
|
|
VkPipelineCache pipelineCache;
|
|
VkPipelineLayout pipelineLayout;
|
|
VkPipeline pipeline;
|
|
VkDescriptorPool descriptorPool;
|
|
VkDescriptorSetLayout descriptorSetLayout;
|
|
VkDescriptorSet descriptorSet;
|
|
vks::VulkanDevice *device;
|
|
VkPhysicalDeviceDriverProperties driverProperties = {};
|
|
VulkanExampleBase *example;
|
|
ImGuiStyle vulkanStyle;
|
|
int selectedStyle = 0;
|
|
public:
|
|
// UI params are set via push constants
|
|
struct PushConstBlock {
|
|
glm::vec2 scale;
|
|
glm::vec2 translate;
|
|
} pushConstBlock;
|
|
|
|
ImGUI(VulkanExampleBase *example) : example(example)
|
|
{
|
|
device = example->vulkanDevice;
|
|
ImGui::CreateContext();
|
|
|
|
//SRS - Set ImGui font and style scale factors to handle retina and other HiDPI displays
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
io.FontGlobalScale = example->ui.scale;
|
|
ImGuiStyle& style = ImGui::GetStyle();
|
|
style.ScaleAllSizes(example->ui.scale);
|
|
};
|
|
|
|
~ImGUI()
|
|
{
|
|
ImGui::DestroyContext();
|
|
// Release all Vulkan resources required for rendering imGui
|
|
vertexBuffer.destroy();
|
|
indexBuffer.destroy();
|
|
vkDestroyImage(device->logicalDevice, fontImage, nullptr);
|
|
vkDestroyImageView(device->logicalDevice, fontView, nullptr);
|
|
vkFreeMemory(device->logicalDevice, fontMemory, nullptr);
|
|
vkDestroySampler(device->logicalDevice, sampler, nullptr);
|
|
vkDestroyPipelineCache(device->logicalDevice, pipelineCache, nullptr);
|
|
vkDestroyPipeline(device->logicalDevice, pipeline, nullptr);
|
|
vkDestroyPipelineLayout(device->logicalDevice, pipelineLayout, nullptr);
|
|
vkDestroyDescriptorPool(device->logicalDevice, descriptorPool, nullptr);
|
|
vkDestroyDescriptorSetLayout(device->logicalDevice, descriptorSetLayout, nullptr);
|
|
}
|
|
|
|
// Initialize styles, keys, etc.
|
|
void init(float width, float height)
|
|
{
|
|
// Color scheme
|
|
vulkanStyle = ImGui::GetStyle();
|
|
vulkanStyle.Colors[ImGuiCol_TitleBg] = ImVec4(1.0f, 0.0f, 0.0f, 0.6f);
|
|
vulkanStyle.Colors[ImGuiCol_TitleBgActive] = ImVec4(1.0f, 0.0f, 0.0f, 0.8f);
|
|
vulkanStyle.Colors[ImGuiCol_MenuBarBg] = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
|
|
vulkanStyle.Colors[ImGuiCol_Header] = ImVec4(1.0f, 0.0f, 0.0f, 0.4f);
|
|
vulkanStyle.Colors[ImGuiCol_CheckMark] = ImVec4(0.0f, 1.0f, 0.0f, 1.0f);
|
|
|
|
setStyle(0);
|
|
|
|
// Dimensions
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
io.DisplaySize = ImVec2(width, height);
|
|
io.DisplayFramebufferScale = ImVec2(1.0f, 1.0f);
|
|
#if defined(_WIN32)
|
|
// If we directly work with os specific key codes, we need to map special key types like tab
|
|
io.KeyMap[ImGuiKey_Tab] = VK_TAB;
|
|
io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT;
|
|
io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
|
|
io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
|
|
io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN;
|
|
io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
|
|
io.KeyMap[ImGuiKey_Enter] = VK_RETURN;
|
|
io.KeyMap[ImGuiKey_Space] = VK_SPACE;
|
|
io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
|
|
#endif
|
|
}
|
|
|
|
void setStyle(uint32_t index)
|
|
{
|
|
switch (index)
|
|
{
|
|
case 0:
|
|
{
|
|
ImGuiStyle& style = ImGui::GetStyle();
|
|
style = vulkanStyle;
|
|
break;
|
|
}
|
|
case 1:
|
|
ImGui::StyleColorsClassic();
|
|
break;
|
|
case 2:
|
|
ImGui::StyleColorsDark();
|
|
break;
|
|
case 3:
|
|
ImGui::StyleColorsLight();
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Initialize all Vulkan resources used by the ui
|
|
void initResources(VkRenderPass renderPass, VkQueue copyQueue, const std::string& shadersPath)
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
// Create font texture
|
|
unsigned char* fontData;
|
|
int texWidth, texHeight;
|
|
io.Fonts->GetTexDataAsRGBA32(&fontData, &texWidth, &texHeight);
|
|
VkDeviceSize uploadSize = texWidth*texHeight * 4 * sizeof(char);
|
|
|
|
//SRS - Get Vulkan device driver information if available, use later for display
|
|
if (device->extensionSupported(VK_KHR_DRIVER_PROPERTIES_EXTENSION_NAME))
|
|
{
|
|
VkPhysicalDeviceProperties2 deviceProperties2 = {};
|
|
deviceProperties2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
|
|
deviceProperties2.pNext = &driverProperties;
|
|
driverProperties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRIVER_PROPERTIES;
|
|
vkGetPhysicalDeviceProperties2(device->physicalDevice, &deviceProperties2);
|
|
}
|
|
|
|
// Create target image for copy
|
|
VkImageCreateInfo imageInfo = vks::initializers::imageCreateInfo();
|
|
imageInfo.imageType = VK_IMAGE_TYPE_2D;
|
|
imageInfo.format = VK_FORMAT_R8G8B8A8_UNORM;
|
|
imageInfo.extent.width = texWidth;
|
|
imageInfo.extent.height = texHeight;
|
|
imageInfo.extent.depth = 1;
|
|
imageInfo.mipLevels = 1;
|
|
imageInfo.arrayLayers = 1;
|
|
imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
|
|
imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
|
|
imageInfo.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
|
|
imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
|
|
imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
|
|
VK_CHECK_RESULT(vkCreateImage(device->logicalDevice, &imageInfo, nullptr, &fontImage));
|
|
VkMemoryRequirements memReqs;
|
|
vkGetImageMemoryRequirements(device->logicalDevice, fontImage, &memReqs);
|
|
VkMemoryAllocateInfo memAllocInfo = vks::initializers::memoryAllocateInfo();
|
|
memAllocInfo.allocationSize = memReqs.size;
|
|
memAllocInfo.memoryTypeIndex = device->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
|
|
VK_CHECK_RESULT(vkAllocateMemory(device->logicalDevice, &memAllocInfo, nullptr, &fontMemory));
|
|
VK_CHECK_RESULT(vkBindImageMemory(device->logicalDevice, fontImage, fontMemory, 0));
|
|
|
|
// Image view
|
|
VkImageViewCreateInfo viewInfo = vks::initializers::imageViewCreateInfo();
|
|
viewInfo.image = fontImage;
|
|
viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
|
|
viewInfo.format = VK_FORMAT_R8G8B8A8_UNORM;
|
|
viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
|
|
viewInfo.subresourceRange.levelCount = 1;
|
|
viewInfo.subresourceRange.layerCount = 1;
|
|
VK_CHECK_RESULT(vkCreateImageView(device->logicalDevice, &viewInfo, nullptr, &fontView));
|
|
|
|
// Staging buffers for font data upload
|
|
vks::Buffer stagingBuffer;
|
|
|
|
VK_CHECK_RESULT(device->createBuffer(
|
|
VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&stagingBuffer,
|
|
uploadSize));
|
|
|
|
stagingBuffer.map();
|
|
memcpy(stagingBuffer.mapped, fontData, uploadSize);
|
|
stagingBuffer.unmap();
|
|
|
|
// Copy buffer data to font image
|
|
VkCommandBuffer copyCmd = device->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
|
|
|
// Prepare for transfer
|
|
vks::tools::setImageLayout(
|
|
copyCmd,
|
|
fontImage,
|
|
VK_IMAGE_ASPECT_COLOR_BIT,
|
|
VK_IMAGE_LAYOUT_UNDEFINED,
|
|
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
|
VK_PIPELINE_STAGE_HOST_BIT,
|
|
VK_PIPELINE_STAGE_TRANSFER_BIT);
|
|
|
|
// Copy
|
|
VkBufferImageCopy bufferCopyRegion = {};
|
|
bufferCopyRegion.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
|
|
bufferCopyRegion.imageSubresource.layerCount = 1;
|
|
bufferCopyRegion.imageExtent.width = texWidth;
|
|
bufferCopyRegion.imageExtent.height = texHeight;
|
|
bufferCopyRegion.imageExtent.depth = 1;
|
|
|
|
vkCmdCopyBufferToImage(
|
|
copyCmd,
|
|
stagingBuffer.buffer,
|
|
fontImage,
|
|
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
|
1,
|
|
&bufferCopyRegion
|
|
);
|
|
|
|
// Prepare for shader read
|
|
vks::tools::setImageLayout(
|
|
copyCmd,
|
|
fontImage,
|
|
VK_IMAGE_ASPECT_COLOR_BIT,
|
|
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
|
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
|
|
VK_PIPELINE_STAGE_TRANSFER_BIT,
|
|
VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT);
|
|
|
|
device->flushCommandBuffer(copyCmd, copyQueue, true);
|
|
|
|
stagingBuffer.destroy();
|
|
|
|
// Font texture Sampler
|
|
VkSamplerCreateInfo samplerInfo = vks::initializers::samplerCreateInfo();
|
|
samplerInfo.magFilter = VK_FILTER_LINEAR;
|
|
samplerInfo.minFilter = VK_FILTER_LINEAR;
|
|
samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
|
|
samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
|
|
samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
|
|
samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
|
|
samplerInfo.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
|
|
VK_CHECK_RESULT(vkCreateSampler(device->logicalDevice, &samplerInfo, nullptr, &sampler));
|
|
|
|
// Descriptor pool
|
|
std::vector<VkDescriptorPoolSize> poolSizes = {
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1)
|
|
};
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device->logicalDevice, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
|
|
// Descriptor set layout
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0),
|
|
};
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device->logicalDevice, &descriptorLayout, nullptr, &descriptorSetLayout));
|
|
|
|
// Descriptor set
|
|
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device->logicalDevice, &allocInfo, &descriptorSet));
|
|
VkDescriptorImageInfo fontDescriptor = vks::initializers::descriptorImageInfo(
|
|
sampler,
|
|
fontView,
|
|
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
|
|
);
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &fontDescriptor)
|
|
};
|
|
vkUpdateDescriptorSets(device->logicalDevice, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
|
|
// Pipeline cache
|
|
VkPipelineCacheCreateInfo pipelineCacheCreateInfo = {};
|
|
pipelineCacheCreateInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
|
|
VK_CHECK_RESULT(vkCreatePipelineCache(device->logicalDevice, &pipelineCacheCreateInfo, nullptr, &pipelineCache));
|
|
|
|
// Pipeline layout
|
|
// Push constants for UI rendering parameters
|
|
VkPushConstantRange pushConstantRange = vks::initializers::pushConstantRange(VK_SHADER_STAGE_VERTEX_BIT, sizeof(PushConstBlock), 0);
|
|
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
|
|
pipelineLayoutCreateInfo.pushConstantRangeCount = 1;
|
|
pipelineLayoutCreateInfo.pPushConstantRanges = &pushConstantRange;
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device->logicalDevice, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
|
|
|
|
// Setup graphics pipeline for UI rendering
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
|
|
vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
|
|
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState =
|
|
vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_NONE, VK_FRONT_FACE_COUNTER_CLOCKWISE);
|
|
|
|
// Enable blending
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState{};
|
|
blendAttachmentState.blendEnable = VK_TRUE;
|
|
blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
|
|
blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
|
|
blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
|
|
blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
|
|
blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
|
|
blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD;
|
|
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState =
|
|
vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
|
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState =
|
|
vks::initializers::pipelineDepthStencilStateCreateInfo(VK_FALSE, VK_FALSE, VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
|
|
VkPipelineViewportStateCreateInfo viewportState =
|
|
vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
|
|
VkPipelineMultisampleStateCreateInfo multisampleState =
|
|
vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT);
|
|
|
|
std::vector<VkDynamicState> dynamicStateEnables = {
|
|
VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR
|
|
};
|
|
VkPipelineDynamicStateCreateInfo dynamicState =
|
|
vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
|
|
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages{};
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass);
|
|
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
|
|
// Vertex bindings an attributes based on ImGui vertex definition
|
|
std::vector<VkVertexInputBindingDescription> vertexInputBindings = {
|
|
vks::initializers::vertexInputBindingDescription(0, sizeof(ImDrawVert), VK_VERTEX_INPUT_RATE_VERTEX),
|
|
};
|
|
std::vector<VkVertexInputAttributeDescription> vertexInputAttributes = {
|
|
vks::initializers::vertexInputAttributeDescription(0, 0, VK_FORMAT_R32G32_SFLOAT, offsetof(ImDrawVert, pos)), // Location 0: Position
|
|
vks::initializers::vertexInputAttributeDescription(0, 1, VK_FORMAT_R32G32_SFLOAT, offsetof(ImDrawVert, uv)), // Location 1: UV
|
|
vks::initializers::vertexInputAttributeDescription(0, 2, VK_FORMAT_R8G8B8A8_UNORM, offsetof(ImDrawVert, col)), // Location 0: Color
|
|
};
|
|
VkPipelineVertexInputStateCreateInfo vertexInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
vertexInputState.vertexBindingDescriptionCount = static_cast<uint32_t>(vertexInputBindings.size());
|
|
vertexInputState.pVertexBindingDescriptions = vertexInputBindings.data();
|
|
vertexInputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertexInputAttributes.size());
|
|
vertexInputState.pVertexAttributeDescriptions = vertexInputAttributes.data();
|
|
|
|
pipelineCreateInfo.pVertexInputState = &vertexInputState;
|
|
|
|
shaderStages[0] = example->loadShader(shadersPath + "imgui/ui.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = example->loadShader(shadersPath + "imgui/ui.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device->logicalDevice, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipeline));
|
|
}
|
|
|
|
// Starts a new imGui frame and sets up windows and ui elements
|
|
void newFrame(VulkanExampleBase *example, bool updateFrameGraph)
|
|
{
|
|
ImGui::NewFrame();
|
|
|
|
// Init imGui windows and elements
|
|
|
|
// Debug window
|
|
ImGui::SetWindowPos(ImVec2(20 * example->ui.scale, 20 * example->ui.scale), ImGuiSetCond_FirstUseEver);
|
|
ImGui::SetWindowSize(ImVec2(300 * example->ui.scale, 300 * example->ui.scale), ImGuiSetCond_Always);
|
|
ImGui::TextUnformatted(example->title.c_str());
|
|
ImGui::TextUnformatted(device->properties.deviceName);
|
|
|
|
//SRS - Display Vulkan API version and device driver information if available (otherwise blank)
|
|
ImGui::Text("Vulkan API %i.%i.%i", VK_API_VERSION_MAJOR(device->properties.apiVersion), VK_API_VERSION_MINOR(device->properties.apiVersion), VK_API_VERSION_PATCH(device->properties.apiVersion));
|
|
ImGui::Text("%s %s", driverProperties.driverName, driverProperties.driverInfo);
|
|
|
|
// Update frame time display
|
|
if (updateFrameGraph) {
|
|
std::rotate(uiSettings.frameTimes.begin(), uiSettings.frameTimes.begin() + 1, uiSettings.frameTimes.end());
|
|
float frameTime = 1000.0f / (example->frameTimer * 1000.0f);
|
|
uiSettings.frameTimes.back() = frameTime;
|
|
if (frameTime < uiSettings.frameTimeMin) {
|
|
uiSettings.frameTimeMin = frameTime;
|
|
}
|
|
if (frameTime > uiSettings.frameTimeMax) {
|
|
uiSettings.frameTimeMax = frameTime;
|
|
}
|
|
}
|
|
|
|
ImGui::PlotLines("Frame Times", &uiSettings.frameTimes[0], 50, 0, "", uiSettings.frameTimeMin, uiSettings.frameTimeMax, ImVec2(0, 80));
|
|
|
|
ImGui::Text("Camera");
|
|
ImGui::InputFloat3("position", &example->camera.position.x, 2);
|
|
ImGui::InputFloat3("rotation", &example->camera.rotation.x, 2);
|
|
|
|
// Example settings window
|
|
ImGui::SetNextWindowPos(ImVec2(20 * example->ui.scale, 360 * example->ui.scale), ImGuiSetCond_FirstUseEver);
|
|
ImGui::SetNextWindowSize(ImVec2(300 * example->ui.scale, 200 * example->ui.scale), ImGuiSetCond_FirstUseEver);
|
|
ImGui::Begin("Example settings");
|
|
ImGui::Checkbox("Render models", &uiSettings.displayModels);
|
|
ImGui::Checkbox("Display logos", &uiSettings.displayLogos);
|
|
ImGui::Checkbox("Display background", &uiSettings.displayBackground);
|
|
ImGui::Checkbox("Animate light", &uiSettings.animateLight);
|
|
ImGui::SliderFloat("Light speed", &uiSettings.lightSpeed, 0.1f, 1.0f);
|
|
//ImGui::ShowStyleSelector("UI style");
|
|
|
|
if (ImGui::Combo("UI style", &selectedStyle, "Vulkan\0Classic\0Dark\0Light\0")) {
|
|
setStyle(selectedStyle);
|
|
}
|
|
|
|
ImGui::End();
|
|
|
|
//SRS - ShowDemoWindow() sets its own initial position and size, cannot override here
|
|
ImGui::ShowDemoWindow();
|
|
|
|
// Render to generate draw buffers
|
|
ImGui::Render();
|
|
}
|
|
|
|
// Update vertex and index buffer containing the imGui elements when required
|
|
void updateBuffers()
|
|
{
|
|
ImDrawData* imDrawData = ImGui::GetDrawData();
|
|
|
|
// Note: Alignment is done inside buffer creation
|
|
VkDeviceSize vertexBufferSize = imDrawData->TotalVtxCount * sizeof(ImDrawVert);
|
|
VkDeviceSize indexBufferSize = imDrawData->TotalIdxCount * sizeof(ImDrawIdx);
|
|
|
|
if ((vertexBufferSize == 0) || (indexBufferSize == 0)) {
|
|
return;
|
|
}
|
|
|
|
// Update buffers only if vertex or index count has been changed compared to current buffer size
|
|
|
|
// Vertex buffer
|
|
if ((vertexBuffer.buffer == VK_NULL_HANDLE) || (vertexCount != imDrawData->TotalVtxCount)) {
|
|
vertexBuffer.unmap();
|
|
vertexBuffer.destroy();
|
|
VK_CHECK_RESULT(device->createBuffer(VK_BUFFER_USAGE_VERTEX_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, &vertexBuffer, vertexBufferSize));
|
|
vertexCount = imDrawData->TotalVtxCount;
|
|
vertexBuffer.map();
|
|
}
|
|
|
|
// Index buffer
|
|
if ((indexBuffer.buffer == VK_NULL_HANDLE) || (indexCount < imDrawData->TotalIdxCount)) {
|
|
indexBuffer.unmap();
|
|
indexBuffer.destroy();
|
|
VK_CHECK_RESULT(device->createBuffer(VK_BUFFER_USAGE_INDEX_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, &indexBuffer, indexBufferSize));
|
|
indexCount = imDrawData->TotalIdxCount;
|
|
indexBuffer.map();
|
|
}
|
|
|
|
// Upload data
|
|
ImDrawVert* vtxDst = (ImDrawVert*)vertexBuffer.mapped;
|
|
ImDrawIdx* idxDst = (ImDrawIdx*)indexBuffer.mapped;
|
|
|
|
for (int n = 0; n < imDrawData->CmdListsCount; n++) {
|
|
const ImDrawList* cmd_list = imDrawData->CmdLists[n];
|
|
memcpy(vtxDst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
|
|
memcpy(idxDst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
|
|
vtxDst += cmd_list->VtxBuffer.Size;
|
|
idxDst += cmd_list->IdxBuffer.Size;
|
|
}
|
|
|
|
// Flush to make writes visible to GPU
|
|
vertexBuffer.flush();
|
|
indexBuffer.flush();
|
|
}
|
|
|
|
// Draw current imGui frame into a command buffer
|
|
void drawFrame(VkCommandBuffer commandBuffer)
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
vkCmdBindDescriptorSets(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
|
|
vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
|
|
|
|
VkViewport viewport = vks::initializers::viewport(ImGui::GetIO().DisplaySize.x, ImGui::GetIO().DisplaySize.y, 0.0f, 1.0f);
|
|
vkCmdSetViewport(commandBuffer, 0, 1, &viewport);
|
|
|
|
// UI scale and translate via push constants
|
|
pushConstBlock.scale = glm::vec2(2.0f / io.DisplaySize.x, 2.0f / io.DisplaySize.y);
|
|
pushConstBlock.translate = glm::vec2(-1.0f);
|
|
vkCmdPushConstants(commandBuffer, pipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(PushConstBlock), &pushConstBlock);
|
|
|
|
// Render commands
|
|
ImDrawData* imDrawData = ImGui::GetDrawData();
|
|
int32_t vertexOffset = 0;
|
|
int32_t indexOffset = 0;
|
|
|
|
if (imDrawData->CmdListsCount > 0) {
|
|
|
|
VkDeviceSize offsets[1] = { 0 };
|
|
vkCmdBindVertexBuffers(commandBuffer, 0, 1, &vertexBuffer.buffer, offsets);
|
|
vkCmdBindIndexBuffer(commandBuffer, indexBuffer.buffer, 0, VK_INDEX_TYPE_UINT16);
|
|
|
|
for (int32_t i = 0; i < imDrawData->CmdListsCount; i++)
|
|
{
|
|
const ImDrawList* cmd_list = imDrawData->CmdLists[i];
|
|
for (int32_t j = 0; j < cmd_list->CmdBuffer.Size; j++)
|
|
{
|
|
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[j];
|
|
VkRect2D scissorRect;
|
|
scissorRect.offset.x = std::max((int32_t)(pcmd->ClipRect.x), 0);
|
|
scissorRect.offset.y = std::max((int32_t)(pcmd->ClipRect.y), 0);
|
|
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;
|
|
}
|
|
#if (defined(VK_USE_PLATFORM_IOS_MVK) || defined(VK_USE_PLATFORM_METAL_EXT)) && TARGET_OS_SIMULATOR
|
|
// Apple Device Simulator does not support vkCmdDrawIndexed() with vertexOffset > 0, so rebind vertex buffer instead
|
|
offsets[0] += cmd_list->VtxBuffer.Size * sizeof(ImDrawVert);
|
|
vkCmdBindVertexBuffers(commandBuffer, 0, 1, &vertexBuffer.buffer, offsets);
|
|
#else
|
|
vertexOffset += cmd_list->VtxBuffer.Size;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// VulkanExample
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class VulkanExample : public VulkanExampleBase
|
|
{
|
|
public:
|
|
ImGUI *imGui = nullptr;
|
|
|
|
struct Models {
|
|
vkglTF::Model models;
|
|
vkglTF::Model logos;
|
|
vkglTF::Model background;
|
|
} models;
|
|
|
|
vks::Buffer uniformBufferVS;
|
|
|
|
struct UBOVS {
|
|
glm::mat4 projection;
|
|
glm::mat4 modelview;
|
|
glm::vec4 lightPos;
|
|
} uboVS;
|
|
|
|
VkPipelineLayout pipelineLayout;
|
|
VkPipeline pipeline;
|
|
VkDescriptorSetLayout descriptorSetLayout;
|
|
VkDescriptorSet descriptorSet;
|
|
|
|
VulkanExample() : VulkanExampleBase()
|
|
{
|
|
title = "Vulkan Example - ImGui";
|
|
camera.type = Camera::CameraType::lookat;
|
|
camera.setPosition(glm::vec3(0.0f, 0.0f, -4.8f));
|
|
camera.setRotation(glm::vec3(4.5f, -380.0f, 0.0f));
|
|
camera.setPerspective(45.0f, (float)width / (float)height, 0.1f, 256.0f);
|
|
|
|
//SRS - Enable VK_KHR_get_physical_device_properties2 to retrieve device driver information for display
|
|
enabledInstanceExtensions.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
|
|
|
|
// Don't use the ImGui overlay of the base framework in this sample
|
|
settings.overlay = false;
|
|
}
|
|
|
|
~VulkanExample()
|
|
{
|
|
vkDestroyPipeline(device, pipeline, nullptr);
|
|
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
|
|
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
|
|
|
|
uniformBufferVS.destroy();
|
|
|
|
delete imGui;
|
|
}
|
|
|
|
void buildCommandBuffers()
|
|
{
|
|
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
|
|
|
|
VkClearValue clearValues[2];
|
|
clearValues[0].color = { { 0.2f, 0.2f, 0.2f, 1.0f} };
|
|
clearValues[1].depthStencil = { 1.0f, 0 };
|
|
|
|
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
|
|
renderPassBeginInfo.renderPass = renderPass;
|
|
renderPassBeginInfo.renderArea.offset.x = 0;
|
|
renderPassBeginInfo.renderArea.offset.y = 0;
|
|
renderPassBeginInfo.renderArea.extent.width = width;
|
|
renderPassBeginInfo.renderArea.extent.height = height;
|
|
renderPassBeginInfo.clearValueCount = 2;
|
|
renderPassBeginInfo.pClearValues = clearValues;
|
|
|
|
imGui->newFrame(this, (frameCounter == 0));
|
|
imGui->updateBuffers();
|
|
|
|
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
|
|
{
|
|
// Set target frame buffer
|
|
renderPassBeginInfo.framebuffer = frameBuffers[i];
|
|
|
|
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
|
|
|
|
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
|
|
|
|
VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
|
|
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
|
|
|
|
VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
|
|
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
|
|
|
|
// Render scene
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
|
|
|
|
VkDeviceSize offsets[1] = { 0 };
|
|
if (uiSettings.displayBackground) {
|
|
models.background.draw(drawCmdBuffers[i]);
|
|
}
|
|
|
|
if (uiSettings.displayModels) {
|
|
models.models.draw(drawCmdBuffers[i]);
|
|
}
|
|
|
|
if (uiSettings.displayLogos) {
|
|
models.logos.draw(drawCmdBuffers[i]);
|
|
}
|
|
|
|
// Render imGui
|
|
if (ui.visible) {
|
|
imGui->drawFrame(drawCmdBuffers[i]);
|
|
}
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
|
|
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
void setupLayoutsAndDescriptors()
|
|
{
|
|
// descriptor pool
|
|
std::vector<VkDescriptorPoolSize> poolSizes = {
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
|
|
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1)
|
|
};
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
|
|
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
|
|
// Set layout
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
|
|
};
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout =
|
|
vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
|
|
|
|
// Pipeline layout
|
|
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
|
|
|
|
// Descriptor set
|
|
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBufferVS.descriptor),
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
// Rendering
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE);
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
VkPipelineViewportStateCreateInfo viewportState = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
VkPipelineMultisampleStateCreateInfo multisampleState = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT);
|
|
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
|
|
VkPipelineDynamicStateCreateInfo dynamicState = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
|
|
|
|
std::array<VkPipelineShaderStageCreateInfo,2> shaderStages;
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass);
|
|
pipelineCI.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCI.pRasterizationState = &rasterizationState;
|
|
pipelineCI.pColorBlendState = &colorBlendState;
|
|
pipelineCI.pMultisampleState = &multisampleState;
|
|
pipelineCI.pViewportState = &viewportState;
|
|
pipelineCI.pDepthStencilState = &depthStencilState;
|
|
pipelineCI.pDynamicState = &dynamicState;
|
|
pipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCI.pStages = shaderStages.data();
|
|
pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({ vkglTF::VertexComponent::Position, vkglTF::VertexComponent::Normal, vkglTF::VertexComponent::Color });;
|
|
|
|
shaderStages[0] = loadShader(getShadersPath() + "imgui/scene.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "imgui/scene.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipeline));
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Vertex shader uniform buffer block
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBufferVS,
|
|
sizeof(uboVS),
|
|
&uboVS));
|
|
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void updateUniformBuffers()
|
|
{
|
|
// Vertex shader
|
|
uboVS.projection = camera.matrices.perspective;
|
|
uboVS.modelview = camera.matrices.view * glm::mat4(1.0f);
|
|
|
|
// Light source
|
|
if (uiSettings.animateLight) {
|
|
uiSettings.lightTimer += frameTimer * uiSettings.lightSpeed;
|
|
uboVS.lightPos.x = sin(glm::radians(uiSettings.lightTimer * 360.0f)) * 15.0f;
|
|
uboVS.lightPos.z = cos(glm::radians(uiSettings.lightTimer * 360.0f)) * 15.0f;
|
|
};
|
|
|
|
VK_CHECK_RESULT(uniformBufferVS.map());
|
|
memcpy(uniformBufferVS.mapped, &uboVS, sizeof(uboVS));
|
|
uniformBufferVS.unmap();
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
buildCommandBuffers();
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
void loadAssets()
|
|
{
|
|
const uint32_t glTFLoadingFlags = vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY;
|
|
models.models.loadFromFile(getAssetPath() + "models/vulkanscenemodels.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
|
models.background.loadFromFile(getAssetPath() + "models/vulkanscenebackground.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
|
models.logos.loadFromFile(getAssetPath() + "models/vulkanscenelogos.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
|
}
|
|
|
|
void prepareImGui()
|
|
{
|
|
imGui = new ImGUI(this);
|
|
imGui->init((float)width, (float)height);
|
|
imGui->initResources(renderPass, queue, getShadersPath());
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadAssets();
|
|
prepareUniformBuffers();
|
|
setupLayoutsAndDescriptors();
|
|
preparePipelines();
|
|
prepareImGui();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
|
|
updateUniformBuffers();
|
|
|
|
// Update imGui
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
|
|
io.DisplaySize = ImVec2((float)width, (float)height);
|
|
io.DeltaTime = frameTimer;
|
|
|
|
io.MousePos = ImVec2(mouseState.position.x, mouseState.position.y);
|
|
io.MouseDown[0] = mouseState.buttons.left && ui.visible;
|
|
io.MouseDown[1] = mouseState.buttons.right && ui.visible;
|
|
io.MouseDown[2] = mouseState.buttons.middle && ui.visible;
|
|
|
|
draw();
|
|
}
|
|
|
|
virtual void mouseMoved(double x, double y, bool &handled)
|
|
{
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
handled = io.WantCaptureMouse && ui.visible;
|
|
}
|
|
|
|
// Input handling is platform specific, to show how it's basically done this sample implements it for Windows
|
|
#if defined(_WIN32)
|
|
virtual void OnHandleMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
|
|
ImGuiIO& io = ImGui::GetIO();
|
|
// Only react to keyboard input if ImGui is active
|
|
if (io.WantCaptureKeyboard) {
|
|
// Character input
|
|
if (uMsg == WM_CHAR) {
|
|
if (wParam > 0 && wParam < 0x10000) {
|
|
io.AddInputCharacter((unsigned short)wParam);
|
|
}
|
|
}
|
|
// Special keys (tab, cursor, etc.)
|
|
if ((wParam < 256) && (uMsg == WM_KEYDOWN || uMsg == WM_SYSKEYDOWN)) {
|
|
io.KeysDown[wParam] = true;
|
|
}
|
|
if ((wParam < 256) && (uMsg == WM_KEYUP || uMsg == WM_SYSKEYUP)) {
|
|
io.KeysDown[wParam] = false;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|