1292 lines
No EOL
43 KiB
C++
1292 lines
No EOL
43 KiB
C++
/*
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* Vulkan Example - Text overlay rendering on-top of an existing scene using a separate render pass
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*
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* Copyright (C) 2016 by Sascha Willems - www.saschawillems.de
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*
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <vector>
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#include <sstream>
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#include <iomanip>
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#define GLM_FORCE_RADIANS
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#define GLM_FORCE_DEPTH_ZERO_TO_ONE
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#include <glm/glm.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include <glm/gtc/matrix_inverse.hpp>
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#include <vulkan/vulkan.h>
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#include "vulkanexamplebase.h"
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#include "../external/stb/stb_font_consolas_24_latin1.inl"
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#define VERTEX_BUFFER_BIND_ID 0
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#define ENABLE_VALIDATION false
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// Vertex layout for this example
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std::vector<vkMeshLoader::VertexLayout> vertexLayout =
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{
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vkMeshLoader::VERTEX_LAYOUT_POSITION,
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vkMeshLoader::VERTEX_LAYOUT_NORMAL,
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vkMeshLoader::VERTEX_LAYOUT_UV,
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vkMeshLoader::VERTEX_LAYOUT_COLOR,
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};
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// Defines for the STB font used
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// STB font files can be found at http://nothings.org/stb/font/
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#define STB_FONT_NAME stb_font_consolas_24_latin1
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#define STB_FONT_WIDTH STB_FONT_consolas_24_latin1_BITMAP_WIDTH
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#define STB_FONT_HEIGHT STB_FONT_consolas_24_latin1_BITMAP_HEIGHT
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#define STB_FIRST_CHAR STB_FONT_consolas_24_latin1_FIRST_CHAR
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#define STB_NUM_CHARS STB_FONT_consolas_24_latin1_NUM_CHARS
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// Max. number of chars the text overlay buffer can hold
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#define MAX_CHAR_COUNT 2048
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// Mostly self-contained text overlay class
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// todo : comment
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class VulkanTextOverlay
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{
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private:
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VkPhysicalDevice physicalDevice;
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VkDevice device;
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VkPhysicalDeviceMemoryProperties deviceMemoryProperties;
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VkQueue queue;
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VkFormat colorFormat;
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VkFormat depthFormat;
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uint32_t *frameBufferWidth;
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uint32_t *frameBufferHeight;
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VkSampler sampler;
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VkImage image;
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VkImageView view;
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VkBuffer buffer;
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VkDeviceMemory memory;
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VkDeviceMemory imageMemory;
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VkDescriptorPool descriptorPool;
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VkDescriptorSetLayout descriptorSetLayout;
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VkDescriptorSet descriptorSet;
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VkPipelineLayout pipelineLayout;
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VkPipelineCache pipelineCache;
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VkPipeline pipeline;
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VkRenderPass renderPass;
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VkCommandPool commandPool;
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std::vector<VkCommandBuffer> cmdBuffers;
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std::vector<VkFramebuffer*> frameBuffers;
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std::vector<VkPipelineShaderStageCreateInfo> shaderStages;
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// Pointer to mapped vertex buffer
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glm::vec4 *mapped = nullptr;
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stb_fontchar stbFontData[STB_NUM_CHARS];
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uint32_t numLetters;
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// Try to find appropriate memory type for a memory allocation
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VkBool32 getMemoryType(uint32_t typeBits, VkFlags properties, uint32_t *typeIndex)
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{
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for (int i = 0; i < 32; i++) {
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if ((typeBits & 1) == 1) {
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if ((deviceMemoryProperties.memoryTypes[i].propertyFlags & properties) == properties)
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{
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*typeIndex = i;
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return true;
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}
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}
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typeBits >>= 1;
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}
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return false;
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}
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public:
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enum TextAlign { alignLeft, alignCenter, alignRight };
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bool visible = true;
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VulkanTextOverlay(
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VkPhysicalDevice physicalDevice,
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VkDevice device,
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VkQueue queue,
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std::vector<VkFramebuffer> &framebuffers,
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VkFormat colorformat,
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VkFormat depthformat,
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uint32_t *framebufferwidth,
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uint32_t *framebufferheight,
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std::vector<VkPipelineShaderStageCreateInfo> shaderstages)
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{
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this->physicalDevice = physicalDevice;
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this->device = device;
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this->queue = queue;
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this->colorFormat = colorformat;
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this->depthFormat = depthformat;
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this->frameBuffers.resize(framebuffers.size());
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for (uint32_t i = 0; i < framebuffers.size(); i++)
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{
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this->frameBuffers[i] = &framebuffers[i];
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}
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this->shaderStages = shaderstages;
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this->frameBufferWidth = framebufferwidth;
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this->frameBufferHeight = framebufferheight;
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vkGetPhysicalDeviceMemoryProperties(physicalDevice, &deviceMemoryProperties);
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cmdBuffers.resize(framebuffers.size());
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prepareResources();
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prepareRenderPass();
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preparePipeline();
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}
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~VulkanTextOverlay()
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{
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// Free up all Vulkan resources requested by the text overlay
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vkDestroySampler(device, sampler, nullptr);
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vkDestroyImage(device, image, nullptr);
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vkDestroyImageView(device, view, nullptr);
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vkDestroyBuffer(device, buffer, nullptr);
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vkFreeMemory(device, memory, nullptr);
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vkFreeMemory(device, imageMemory, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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vkDestroyDescriptorPool(device, descriptorPool, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyPipelineCache(device, pipelineCache, nullptr);
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vkDestroyPipeline(device, pipeline, nullptr);
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vkDestroyRenderPass(device, renderPass, nullptr);
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vkFreeCommandBuffers(device, commandPool, cmdBuffers.size(), cmdBuffers.data());
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vkDestroyCommandPool(device, commandPool, nullptr);
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}
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// Prepare all vulkan resources required to render the font
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// The text overlay uses separate resources for descriptors (pool, sets, layouts), pipelines and command buffers
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void prepareResources()
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{
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static unsigned char font24pixels[STB_FONT_HEIGHT][STB_FONT_WIDTH];
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STB_FONT_NAME(stbFontData, font24pixels, STB_FONT_HEIGHT);
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// Command buffer
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// Pool
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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 = 0; // todo : pass from example base / swap chain
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cmdPoolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
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vkTools::checkResult(vkCreateCommandPool(device, &cmdPoolInfo, nullptr, &commandPool));
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VkCommandBufferAllocateInfo cmdBufAllocateInfo =
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vkTools::initializers::commandBufferAllocateInfo(
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commandPool,
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VK_COMMAND_BUFFER_LEVEL_PRIMARY,
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(uint32_t)cmdBuffers.size());
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vkTools::checkResult(vkAllocateCommandBuffers(device, &cmdBufAllocateInfo, cmdBuffers.data()));
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// Vertex buffer
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VkDeviceSize bufferSize = MAX_CHAR_COUNT * sizeof(glm::vec4);
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VkBufferCreateInfo bufferInfo = vkTools::initializers::bufferCreateInfo(VK_BUFFER_USAGE_VERTEX_BUFFER_BIT, bufferSize);
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vkTools::checkResult(vkCreateBuffer(device, &bufferInfo, nullptr, &buffer));
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VkMemoryRequirements memReqs;
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VkMemoryAllocateInfo allocInfo = vkTools::initializers::memoryAllocateInfo();
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vkGetBufferMemoryRequirements(device, buffer, &memReqs);
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allocInfo.allocationSize = memReqs.size;
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getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, &allocInfo.memoryTypeIndex);
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vkTools::checkResult(vkAllocateMemory(device, &allocInfo, nullptr, &memory));
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vkTools::checkResult(vkBindBufferMemory(device, buffer, memory, 0));
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// Font texture
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VkImageCreateInfo imageInfo = vkTools::initializers::imageCreateInfo();
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imageInfo.imageType = VK_IMAGE_TYPE_2D;
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imageInfo.format = VK_FORMAT_R8_UNORM;
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imageInfo.extent.width = STB_FONT_WIDTH;
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imageInfo.extent.height = STB_FONT_HEIGHT;
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imageInfo.extent.depth = 1;
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imageInfo.mipLevels = 1;
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imageInfo.arrayLayers = 1;
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imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
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imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
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imageInfo.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
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imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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imageInfo.initialLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
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vkTools::checkResult(vkCreateImage(device, &imageInfo, nullptr, &image));
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allocInfo.allocationSize = STB_FONT_WIDTH * STB_NUM_CHARS;
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getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &allocInfo.memoryTypeIndex);
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vkTools::checkResult(vkAllocateMemory(device, &allocInfo, nullptr, &imageMemory));
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vkTools::checkResult(vkBindImageMemory(device, image, imageMemory, 0));
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// Staging
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struct {
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VkDeviceMemory memory;
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VkBuffer buffer;
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} stagingBuffer;
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VkBufferCreateInfo bufferCreateInfo = vkTools::initializers::bufferCreateInfo();
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bufferCreateInfo.size = allocInfo.allocationSize;
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bufferCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
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bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
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vkTools::checkResult(vkCreateBuffer(device, &bufferCreateInfo, nullptr, &stagingBuffer.buffer));
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// Get memory requirements for the staging buffer (alignment, memory type bits)
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vkGetBufferMemoryRequirements(device, stagingBuffer.buffer, &memReqs);
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allocInfo.allocationSize = memReqs.size;
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// Get memory type index for a host visible buffer
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getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, &allocInfo.memoryTypeIndex);
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vkTools::checkResult(vkAllocateMemory(device, &allocInfo, nullptr, &stagingBuffer.memory));
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vkTools::checkResult(vkBindBufferMemory(device, stagingBuffer.buffer, stagingBuffer.memory, 0));
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uint8_t *data;
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vkTools::checkResult(vkMapMemory(device, stagingBuffer.memory, 0, allocInfo.allocationSize, 0, (void **)&data));
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memcpy(data, &font24pixels[0][0], STB_FONT_WIDTH * STB_FONT_HEIGHT);
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vkUnmapMemory(device, stagingBuffer.memory);
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// Copy to image
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VkCommandBuffer copyCmd;
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cmdBufAllocateInfo.commandBufferCount = 1;
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vkTools::checkResult(vkAllocateCommandBuffers(device, &cmdBufAllocateInfo, ©Cmd));
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VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
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vkTools::checkResult(vkBeginCommandBuffer(copyCmd, &cmdBufInfo));
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// Prepare for transfer
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vkTools::setImageLayout(
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copyCmd,
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image,
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VK_IMAGE_ASPECT_COLOR_BIT,
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VK_IMAGE_LAYOUT_PREINITIALIZED,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
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VkBufferImageCopy bufferCopyRegion = {};
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bufferCopyRegion.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
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bufferCopyRegion.imageSubresource.mipLevel = 0;
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bufferCopyRegion.imageSubresource.layerCount = 1;
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bufferCopyRegion.imageExtent.width = STB_FONT_WIDTH;
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bufferCopyRegion.imageExtent.height = STB_FONT_HEIGHT;
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bufferCopyRegion.imageExtent.depth = 1;
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vkCmdCopyBufferToImage(
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copyCmd,
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stagingBuffer.buffer,
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image,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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1,
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&bufferCopyRegion
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);
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// Prepare for shader read
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vkTools::setImageLayout(
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copyCmd,
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image,
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VK_IMAGE_ASPECT_COLOR_BIT,
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VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
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VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
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vkTools::checkResult(vkEndCommandBuffer(copyCmd));
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VkSubmitInfo submitInfo = vkTools::initializers::submitInfo();
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submitInfo.commandBufferCount = 1;
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submitInfo.pCommandBuffers = ©Cmd;
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vkTools::checkResult(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
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vkTools::checkResult(vkQueueWaitIdle(queue));
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vkFreeCommandBuffers(device, commandPool, 1, ©Cmd);
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vkFreeMemory(device, stagingBuffer.memory, nullptr);
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vkDestroyBuffer(device, stagingBuffer.buffer, nullptr);
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VkImageViewCreateInfo imageViewInfo = vkTools::initializers::imageViewCreateInfo();
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imageViewInfo.image = image;
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imageViewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
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imageViewInfo.format = imageInfo.format;
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imageViewInfo.components = { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A };
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imageViewInfo.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
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vkTools::checkResult(vkCreateImageView(device, &imageViewInfo, nullptr, &view));
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// Sampler
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VkSamplerCreateInfo samplerInfo = vkTools::initializers::samplerCreateInfo();
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samplerInfo.magFilter = VK_FILTER_LINEAR;
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samplerInfo.minFilter = VK_FILTER_LINEAR;
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samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
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samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
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samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
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samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
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samplerInfo.mipLodBias = 0.0f;
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samplerInfo.compareOp = VK_COMPARE_OP_NEVER;
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samplerInfo.minLod = 0.0f;
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samplerInfo.maxLod = 1.0f;
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samplerInfo.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
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vkTools::checkResult(vkCreateSampler(device, &samplerInfo, nullptr, &sampler));
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// Descriptor
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// Font uses a separate descriptor pool
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std::array<VkDescriptorPoolSize, 1> poolSizes;
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poolSizes[0] = vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1);
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VkDescriptorPoolCreateInfo descriptorPoolInfo =
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vkTools::initializers::descriptorPoolCreateInfo(
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poolSizes.size(),
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poolSizes.data(),
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1);
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vkTools::checkResult(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
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// Descriptor set layout
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std::array<VkDescriptorSetLayoutBinding, 1> setLayoutBindings;
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setLayoutBindings[0] = vkTools::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0);
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VkDescriptorSetLayoutCreateInfo descriptorSetLayoutInfo =
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vkTools::initializers::descriptorSetLayoutCreateInfo(
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setLayoutBindings.data(),
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setLayoutBindings.size());
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vkTools::checkResult(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutInfo, nullptr, &descriptorSetLayout));
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// Pipeline layout
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VkPipelineLayoutCreateInfo pipelineLayoutInfo =
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vkTools::initializers::pipelineLayoutCreateInfo(
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&descriptorSetLayout,
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1);
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vkTools::checkResult(vkCreatePipelineLayout(device, &pipelineLayoutInfo, nullptr, &pipelineLayout));
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// Descriptor set
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VkDescriptorSetAllocateInfo descriptorSetAllocInfo =
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vkTools::initializers::descriptorSetAllocateInfo(
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descriptorPool,
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&descriptorSetLayout,
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1);
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vkTools::checkResult(vkAllocateDescriptorSets(device, &descriptorSetAllocInfo, &descriptorSet));
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VkDescriptorImageInfo texDescriptor =
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vkTools::initializers::descriptorImageInfo(
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sampler,
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view,
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VK_IMAGE_LAYOUT_GENERAL);
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std::array<VkWriteDescriptorSet, 1> writeDescriptorSets;
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writeDescriptorSets[0] = vkTools::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &texDescriptor);
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vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
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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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vkTools::checkResult(vkCreatePipelineCache(device, &pipelineCacheCreateInfo, nullptr, &pipelineCache));
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}
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// Prepare a separate pipeline for the font rendering decoupled from the main application
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void preparePipeline()
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{
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VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
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vkTools::initializers::pipelineInputAssemblyStateCreateInfo(
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VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,
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0,
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VK_FALSE);
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VkPipelineRasterizationStateCreateInfo rasterizationState =
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vkTools::initializers::pipelineRasterizationStateCreateInfo(
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VK_POLYGON_MODE_FILL,
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VK_CULL_MODE_BACK_BIT,
|
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VK_FRONT_FACE_CLOCKWISE,
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0);
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// Enable blending
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VkPipelineColorBlendAttachmentState blendAttachmentState =
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vkTools::initializers::pipelineColorBlendAttachmentState(0xf, VK_TRUE);
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blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
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blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
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blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD;
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blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
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blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
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blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD;
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blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
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|
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VkPipelineColorBlendStateCreateInfo colorBlendState =
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vkTools::initializers::pipelineColorBlendStateCreateInfo(
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1,
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&blendAttachmentState);
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|
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VkPipelineDepthStencilStateCreateInfo depthStencilState =
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vkTools::initializers::pipelineDepthStencilStateCreateInfo(
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VK_TRUE,
|
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VK_TRUE,
|
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VK_COMPARE_OP_LESS_OR_EQUAL);
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VkPipelineViewportStateCreateInfo viewportState =
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vkTools::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
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VkPipelineMultisampleStateCreateInfo multisampleState =
|
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vkTools::initializers::pipelineMultisampleStateCreateInfo(
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VK_SAMPLE_COUNT_1_BIT,
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0);
|
|
|
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std::vector<VkDynamicState> dynamicStateEnables = {
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VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR
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};
|
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|
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VkPipelineDynamicStateCreateInfo dynamicState =
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vkTools::initializers::pipelineDynamicStateCreateInfo(
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dynamicStateEnables.data(),
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dynamicStateEnables.size(),
|
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0);
|
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|
|
std::array<VkVertexInputBindingDescription, 2> vertexBindings = {};
|
|
vertexBindings[0] = vkTools::initializers::vertexInputBindingDescription(0, sizeof(glm::vec4), VK_VERTEX_INPUT_RATE_VERTEX);
|
|
vertexBindings[1] = vkTools::initializers::vertexInputBindingDescription(1, sizeof(glm::vec4), VK_VERTEX_INPUT_RATE_VERTEX);
|
|
|
|
std::array<VkVertexInputAttributeDescription, 2> vertexAttribs = {};
|
|
// Position
|
|
vertexAttribs[0] = vkTools::initializers::vertexInputAttributeDescription(0, 0, VK_FORMAT_R32G32_SFLOAT, 0);
|
|
// UV
|
|
vertexAttribs[1] = vkTools::initializers::vertexInputAttributeDescription(1, 1, VK_FORMAT_R32G32_SFLOAT, sizeof(glm::vec2));
|
|
|
|
VkPipelineVertexInputStateCreateInfo inputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
|
|
inputState.vertexBindingDescriptionCount = vertexBindings.size();
|
|
inputState.pVertexBindingDescriptions = vertexBindings.data();
|
|
inputState.vertexAttributeDescriptionCount = vertexAttribs.size();
|
|
inputState.pVertexAttributeDescriptions = vertexAttribs.data();
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vkTools::initializers::pipelineCreateInfo(
|
|
pipelineLayout,
|
|
renderPass,
|
|
0);
|
|
|
|
pipelineCreateInfo.pVertexInputState = &inputState;
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = shaderStages.size();
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
|
|
vkTools::checkResult(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipeline));
|
|
}
|
|
|
|
// Prepare a separate render pass for rendering the text as an overlay
|
|
void prepareRenderPass()
|
|
{
|
|
VkAttachmentDescription attachments[2] = {};
|
|
|
|
// Color attachment
|
|
attachments[0].format = colorFormat;
|
|
attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
|
|
// Don't clear the framebuffer (like the renderpass from the example does)
|
|
attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
|
|
attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
|
|
attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
|
|
attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
|
|
attachments[0].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
|
|
attachments[0].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
|
|
|
|
// Depth attachment
|
|
attachments[1].format = depthFormat;
|
|
attachments[1].samples = VK_SAMPLE_COUNT_1_BIT;
|
|
attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
|
|
attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
|
|
attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
|
|
attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
|
|
attachments[1].initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
|
|
attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
|
|
|
|
VkAttachmentReference colorReference = {};
|
|
colorReference.attachment = 0;
|
|
colorReference.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
|
|
|
|
VkAttachmentReference depthReference = {};
|
|
depthReference.attachment = 1;
|
|
depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
|
|
|
|
VkSubpassDescription subpass = {};
|
|
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
|
|
subpass.flags = 0;
|
|
subpass.inputAttachmentCount = 0;
|
|
subpass.pInputAttachments = NULL;
|
|
subpass.colorAttachmentCount = 1;
|
|
subpass.pColorAttachments = &colorReference;
|
|
subpass.pResolveAttachments = NULL;
|
|
subpass.pDepthStencilAttachment = &depthReference;
|
|
subpass.preserveAttachmentCount = 0;
|
|
subpass.pPreserveAttachments = NULL;
|
|
|
|
VkRenderPassCreateInfo renderPassInfo = {};
|
|
renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
|
|
renderPassInfo.pNext = NULL;
|
|
renderPassInfo.attachmentCount = 2;
|
|
renderPassInfo.pAttachments = attachments;
|
|
renderPassInfo.subpassCount = 1;
|
|
renderPassInfo.pSubpasses = &subpass;
|
|
renderPassInfo.dependencyCount = 0;
|
|
renderPassInfo.pDependencies = NULL;
|
|
|
|
vkTools::checkResult(vkCreateRenderPass(device, &renderPassInfo, nullptr, &renderPass));
|
|
}
|
|
|
|
// Map buffer
|
|
void beginTextUpdate()
|
|
{
|
|
vkTools::checkResult(vkMapMemory(device, memory, 0, VK_WHOLE_SIZE, 0, (void **)&mapped));
|
|
numLetters = 0;
|
|
}
|
|
|
|
// Add text to the current buffer
|
|
// todo : drop shadow? color attribute?
|
|
void addText(std::string text, float x, float y, TextAlign align)
|
|
{
|
|
assert(mapped != nullptr);
|
|
|
|
const float charW = 1.5f / *frameBufferWidth;
|
|
const float charH = 1.5f / *frameBufferHeight;
|
|
|
|
float fbW = (float)*frameBufferWidth;
|
|
float fbH = (float)*frameBufferHeight;
|
|
x = (x / fbW * 2.0f) - 1.0f;
|
|
y = (y / fbH * 2.0f) - 1.0f;
|
|
|
|
// Calculate text width
|
|
float textWidth = 0;
|
|
for (auto letter : text)
|
|
{
|
|
stb_fontchar *charData = &stbFontData[(uint32_t)letter - STB_FIRST_CHAR];
|
|
textWidth += charData->advance * charW;
|
|
}
|
|
|
|
switch (align)
|
|
{
|
|
case alignRight:
|
|
x -= textWidth;
|
|
break;
|
|
case alignCenter:
|
|
x -= textWidth / 2.0f;
|
|
break;
|
|
}
|
|
|
|
// Generate a uv mapped quad per char in the new text
|
|
for (auto letter : text)
|
|
{
|
|
stb_fontchar *charData = &stbFontData[(uint32_t)letter - STB_FIRST_CHAR];
|
|
|
|
mapped->x = (x + (float)charData->x0 * charW);
|
|
mapped->y = (y + (float)charData->y0 * charH);
|
|
mapped->z = charData->s0;
|
|
mapped->w = charData->t0;
|
|
mapped++;
|
|
|
|
mapped->x = (x + (float)charData->x1 * charW);
|
|
mapped->y = (y + (float)charData->y0 * charH);
|
|
mapped->z = charData->s1;
|
|
mapped->w = charData->t0;
|
|
mapped++;
|
|
|
|
mapped->x = (x + (float)charData->x0 * charW);
|
|
mapped->y = (y + (float)charData->y1 * charH);
|
|
mapped->z = charData->s0;
|
|
mapped->w = charData->t1;
|
|
mapped++;
|
|
|
|
mapped->x = (x + (float)charData->x1 * charW);
|
|
mapped->y = (y + (float)charData->y1 * charH);
|
|
mapped->z = charData->s1;
|
|
mapped->w = charData->t1;
|
|
mapped++;
|
|
|
|
x += charData->advance * charW;
|
|
|
|
numLetters++;
|
|
}
|
|
}
|
|
|
|
// Unmap buffer and update command buffers
|
|
void endTextUpdate()
|
|
{
|
|
vkUnmapMemory(device, memory);
|
|
mapped = nullptr;
|
|
updateCommandBuffers();
|
|
}
|
|
|
|
// Needs to be called by the application
|
|
void updateCommandBuffers()
|
|
{
|
|
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
|
|
|
|
VkClearValue clearValues[1];
|
|
clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 0.0f } };
|
|
|
|
VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo();
|
|
renderPassBeginInfo.renderPass = renderPass;
|
|
renderPassBeginInfo.renderArea.extent.width = *frameBufferWidth;
|
|
renderPassBeginInfo.renderArea.extent.height = *frameBufferHeight;
|
|
renderPassBeginInfo.clearValueCount = 1;
|
|
renderPassBeginInfo.pClearValues = clearValues;
|
|
|
|
for (int32_t i = 0; i < cmdBuffers.size(); ++i)
|
|
{
|
|
renderPassBeginInfo.framebuffer = *frameBuffers[i];
|
|
|
|
vkTools::checkResult(vkBeginCommandBuffer(cmdBuffers[i], &cmdBufInfo));
|
|
|
|
vkCmdBeginRenderPass(cmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
|
|
|
|
VkViewport viewport = vkTools::initializers::viewport((float)*frameBufferWidth, (float)*frameBufferHeight, 0.0f, 1.0f);
|
|
vkCmdSetViewport(cmdBuffers[i], 0, 1, &viewport);
|
|
|
|
VkRect2D scissor = vkTools::initializers::rect2D(*frameBufferWidth, *frameBufferHeight, 0, 0);
|
|
vkCmdSetScissor(cmdBuffers[i], 0, 1, &scissor);
|
|
|
|
vkCmdBindPipeline(cmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
|
|
vkCmdBindDescriptorSets(cmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, NULL);
|
|
|
|
VkDeviceSize offsets = 0;
|
|
vkCmdBindVertexBuffers(cmdBuffers[i], 0, 1, &buffer, &offsets);
|
|
vkCmdBindVertexBuffers(cmdBuffers[i], 1, 1, &buffer, &offsets);
|
|
for (uint32_t j = 0; j < numLetters; j++)
|
|
{
|
|
vkCmdDraw(cmdBuffers[i], 4, 1, j * 4, 0);
|
|
}
|
|
|
|
|
|
vkCmdEndRenderPass(cmdBuffers[i]);
|
|
|
|
vkTools::checkResult(vkEndCommandBuffer(cmdBuffers[i]));
|
|
}
|
|
}
|
|
|
|
// Submit the text command buffers to a queue
|
|
// Does a queue wait idle
|
|
void submit(VkQueue queue, uint32_t bufferindex)
|
|
{
|
|
if (!visible)
|
|
{
|
|
return;
|
|
}
|
|
|
|
VkSubmitInfo submitInfo = {};
|
|
submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &cmdBuffers[bufferindex];
|
|
|
|
vkTools::checkResult(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
vkTools::checkResult(vkQueueWaitIdle(queue));
|
|
}
|
|
|
|
};
|
|
|
|
class VulkanExample : public VulkanExampleBase
|
|
{
|
|
public:
|
|
VulkanTextOverlay *textOverlay = nullptr;
|
|
|
|
struct {
|
|
vkTools::VulkanTexture background;
|
|
vkTools::VulkanTexture cube;
|
|
} textures;
|
|
|
|
struct {
|
|
VkPipelineVertexInputStateCreateInfo inputState;
|
|
std::vector<VkVertexInputBindingDescription> bindingDescriptions;
|
|
std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
|
|
} vertices;
|
|
|
|
struct {
|
|
vkMeshLoader::MeshBuffer cube;
|
|
} meshes;
|
|
|
|
struct {
|
|
vkTools::UniformData vsScene;
|
|
} uniformData;
|
|
|
|
struct {
|
|
glm::mat4 projection;
|
|
glm::mat4 model;
|
|
glm::vec4 lightPos = glm::vec4(0.0f, 0.0f, 0.0f, 1.0f);
|
|
} uboVS;
|
|
|
|
struct {
|
|
VkPipeline solid;
|
|
VkPipeline background;
|
|
} pipelines;
|
|
|
|
VkPipelineLayout pipelineLayout;
|
|
VkDescriptorSetLayout descriptorSetLayout;
|
|
|
|
struct {
|
|
VkDescriptorSet background;
|
|
VkDescriptorSet cube;
|
|
} descriptorSets;
|
|
|
|
|
|
VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
|
|
{
|
|
zoom = -4.5f;
|
|
zoomSpeed = 2.5f;
|
|
rotation = { -25.0f, 0.0f, 0.0f };
|
|
title = "Vulkan Example - Text overlay";
|
|
}
|
|
|
|
~VulkanExample()
|
|
{
|
|
vkDestroyPipeline(device, pipelines.solid, nullptr);
|
|
vkDestroyPipeline(device, pipelines.background, nullptr);
|
|
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
|
|
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
|
|
vkMeshLoader::freeMeshBufferResources(device, &meshes.cube);
|
|
textureLoader->destroyTexture(textures.background);
|
|
textureLoader->destroyTexture(textures.cube);
|
|
vkTools::destroyUniformData(device, &uniformData.vsScene);
|
|
delete(textOverlay);
|
|
}
|
|
|
|
void buildCommandBuffers()
|
|
{
|
|
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
|
|
|
|
VkClearValue clearValues[3];
|
|
|
|
clearValues[0].color = { { 0.0f, 0.0f, 0.0f, 1.0f } };
|
|
clearValues[1].depthStencil = { 1.0f, 0 };
|
|
|
|
VkRenderPassBeginInfo renderPassBeginInfo = vkTools::initializers::renderPassBeginInfo();
|
|
renderPassBeginInfo.renderPass = renderPass;
|
|
renderPassBeginInfo.renderArea.extent.width = width;
|
|
renderPassBeginInfo.renderArea.extent.height = height;
|
|
renderPassBeginInfo.clearValueCount = 3;
|
|
renderPassBeginInfo.pClearValues = clearValues;
|
|
|
|
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
|
|
{
|
|
// Set target frame buffer
|
|
renderPassBeginInfo.framebuffer = frameBuffers[i];
|
|
|
|
vkTools::checkResult(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
|
|
|
|
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
|
|
|
|
VkViewport viewport = vkTools::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
|
|
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
|
|
|
|
VkRect2D scissor = vkTools::initializers::rect2D(width, height, 0, 0);
|
|
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
|
|
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.background, 0, NULL);
|
|
|
|
VkDeviceSize offsets[1] = { 0 };
|
|
vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &meshes.cube.vertices.buf, offsets);
|
|
vkCmdBindIndexBuffer(drawCmdBuffers[i], meshes.cube.indices.buf, 0, VK_INDEX_TYPE_UINT32);
|
|
|
|
// Background
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.background);
|
|
// Vertices are generated by the vertex shader
|
|
vkCmdDraw(drawCmdBuffers[i], 4, 1, 0, 0);
|
|
|
|
// Cube
|
|
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.solid);
|
|
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.cube, 0, NULL);
|
|
vkCmdDrawIndexed(drawCmdBuffers[i], meshes.cube.indexCount, 1, 0, 0, 0);
|
|
|
|
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
|
|
|
vkTools::checkResult(vkEndCommandBuffer(drawCmdBuffers[i]));
|
|
}
|
|
|
|
vkQueueWaitIdle(queue);
|
|
}
|
|
|
|
// Update the text buffer displayed by the text overlay
|
|
void updateTextOverlay(void)
|
|
{
|
|
textOverlay->beginTextUpdate();
|
|
|
|
textOverlay->addText(title, 5.0f, 5.0f, VulkanTextOverlay::alignLeft);
|
|
|
|
std::stringstream ss;
|
|
ss << std::fixed << std::setprecision(2) << (frameTimer * 1000.0f) << "ms (" << lastFPS << " fps)";
|
|
textOverlay->addText(ss.str(), 5.0f, 25.0f, VulkanTextOverlay::alignLeft);
|
|
|
|
textOverlay->addText(deviceProperties.deviceName, 5.0f, 45.0f, VulkanTextOverlay::alignLeft);
|
|
|
|
textOverlay->addText("Press \"space\" to toggle text overlay", 5.0f, height - 20.0f, VulkanTextOverlay::alignLeft);
|
|
|
|
// Display projected cube vertices
|
|
for (int32_t x = -1; x <= 1; x += 2)
|
|
{
|
|
for (int32_t y = -1; y <= 1; y += 2)
|
|
{
|
|
for (int32_t z = -1; z <= 1; z += 2)
|
|
{
|
|
glm::vec3 projected = glm::project(glm::vec3((float)x, (float)z, (float)y), uboVS.model, uboVS.projection, glm::vec4(0, 0, (float)width, (float)height));
|
|
textOverlay->addText(std::to_string(x) + "/" + std::to_string(y), projected.x, projected.y, VulkanTextOverlay::alignCenter);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Display current model view matrix
|
|
textOverlay->addText("model view matrix", width, 5.0f, VulkanTextOverlay::alignRight);
|
|
|
|
for (uint32_t i = 0; i < 4; i++)
|
|
{
|
|
ss.str("");
|
|
ss << std::fixed << std::setprecision(2) << std::showpos;
|
|
ss << uboVS.model[0][i] << " " << uboVS.model[1][i] << " " << uboVS.model[2][i] << " " << uboVS.model[3][i];
|
|
textOverlay->addText(ss.str(), width, 25.0f + (float)i * 20.0f, VulkanTextOverlay::alignRight);
|
|
}
|
|
|
|
glm::vec3 projected = glm::project(glm::vec3(0.0f), uboVS.model, uboVS.projection, glm::vec4(0, 0, (float)width, (float)height));
|
|
textOverlay->addText("Uniform cube", projected.x, projected.y, VulkanTextOverlay::alignCenter);
|
|
|
|
#if defined(__ANDROID__)
|
|
// toto
|
|
#else
|
|
textOverlay->addText("Hold middle mouse button and drag to move", 5.0f, height - 40.0f, VulkanTextOverlay::alignLeft);
|
|
#endif
|
|
textOverlay->endTextUpdate();
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
// Get next image in the swap chain (back/front buffer)
|
|
vkTools::checkResult(swapChain.acquireNextImage(semaphores.presentComplete, ¤tBuffer));
|
|
|
|
submitPostPresentBarrier(swapChain.buffers[currentBuffer].image);
|
|
|
|
// Command buffer to be sumitted to the queue
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
|
|
// Submit to queue
|
|
vkTools::checkResult(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
// Submit text overlay to queue
|
|
textOverlay->submit(queue, currentBuffer);
|
|
|
|
submitPrePresentBarrier(swapChain.buffers[currentBuffer].image);
|
|
|
|
vkTools::checkResult(swapChain.queuePresent(queue, currentBuffer, semaphores.renderComplete));
|
|
|
|
vkTools::checkResult(vkQueueWaitIdle(queue));
|
|
}
|
|
|
|
void loadTextures()
|
|
{
|
|
textureLoader->loadTexture(getAssetPath() + "textures/skysphere_bc3.ktx", VK_FORMAT_BC3_UNORM_BLOCK, &textures.background);
|
|
textureLoader->loadTexture(getAssetPath() + "textures/round_window_bc3.ktx", VK_FORMAT_BC3_UNORM_BLOCK, &textures.cube);
|
|
}
|
|
|
|
void loadMeshes()
|
|
{
|
|
loadMesh(getAssetPath() + "models/cube.dae", &meshes.cube, vertexLayout, 1.0f);
|
|
}
|
|
|
|
void setupVertexDescriptions()
|
|
{
|
|
// Binding description
|
|
vertices.bindingDescriptions.resize(1);
|
|
vertices.bindingDescriptions[0] =
|
|
vkTools::initializers::vertexInputBindingDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
vkMeshLoader::vertexSize(vertexLayout),
|
|
VK_VERTEX_INPUT_RATE_VERTEX);
|
|
|
|
// Attribute descriptions
|
|
vertices.attributeDescriptions.resize(4);
|
|
// Location 0 : Position
|
|
vertices.attributeDescriptions[0] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
0,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
0);
|
|
// Location 1 : Normal
|
|
vertices.attributeDescriptions[1] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
1,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
sizeof(float) * 3);
|
|
// Location 2 : Texture coordinates
|
|
vertices.attributeDescriptions[2] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
2,
|
|
VK_FORMAT_R32G32_SFLOAT,
|
|
sizeof(float) * 6);
|
|
// Location 3 : Color
|
|
vertices.attributeDescriptions[3] =
|
|
vkTools::initializers::vertexInputAttributeDescription(
|
|
VERTEX_BUFFER_BIND_ID,
|
|
3,
|
|
VK_FORMAT_R32G32B32_SFLOAT,
|
|
sizeof(float) * 8);
|
|
|
|
vertices.inputState = vkTools::initializers::pipelineVertexInputStateCreateInfo();
|
|
vertices.inputState.vertexBindingDescriptionCount = vertices.bindingDescriptions.size();
|
|
vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
|
|
vertices.inputState.vertexAttributeDescriptionCount = vertices.attributeDescriptions.size();
|
|
vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
|
|
}
|
|
|
|
void setupDescriptorPool()
|
|
{
|
|
std::vector<VkDescriptorPoolSize> poolSizes =
|
|
{
|
|
vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
|
|
vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2),
|
|
};
|
|
|
|
VkDescriptorPoolCreateInfo descriptorPoolInfo =
|
|
vkTools::initializers::descriptorPoolCreateInfo(
|
|
poolSizes.size(),
|
|
poolSizes.data(),
|
|
2);
|
|
|
|
vkTools::checkResult(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
|
}
|
|
|
|
void setupDescriptorSetLayout()
|
|
{
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
|
|
{
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
vkTools::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
VK_SHADER_STAGE_VERTEX_BIT,
|
|
0),
|
|
// Binding 1 : Fragment shader combined sampler
|
|
vkTools::initializers::descriptorSetLayoutBinding(
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
VK_SHADER_STAGE_FRAGMENT_BIT,
|
|
1),
|
|
};
|
|
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout =
|
|
vkTools::initializers::descriptorSetLayoutCreateInfo(
|
|
setLayoutBindings.data(),
|
|
setLayoutBindings.size());
|
|
|
|
vkTools::checkResult(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
|
|
|
|
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
|
|
vkTools::initializers::pipelineLayoutCreateInfo(
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
vkTools::checkResult(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
|
|
}
|
|
|
|
void setupDescriptorSet()
|
|
{
|
|
VkDescriptorSetAllocateInfo allocInfo =
|
|
vkTools::initializers::descriptorSetAllocateInfo(
|
|
descriptorPool,
|
|
&descriptorSetLayout,
|
|
1);
|
|
|
|
// Background
|
|
vkTools::checkResult(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.background));
|
|
|
|
VkDescriptorImageInfo texDescriptor =
|
|
vkTools::initializers::descriptorImageInfo(
|
|
textures.background.sampler,
|
|
textures.background.view,
|
|
VK_IMAGE_LAYOUT_GENERAL);
|
|
|
|
std::vector<VkWriteDescriptorSet> writeDescriptorSets;
|
|
|
|
// Binding 0 : Vertex shader uniform buffer
|
|
writeDescriptorSets.push_back(
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSets.background,
|
|
VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
|
|
0,
|
|
&uniformData.vsScene.descriptor));
|
|
|
|
// Binding 1 : Color map
|
|
writeDescriptorSets.push_back(
|
|
vkTools::initializers::writeDescriptorSet(
|
|
descriptorSets.background,
|
|
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
|
|
1,
|
|
&texDescriptor));
|
|
|
|
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
|
|
|
|
// Cube
|
|
vkTools::checkResult(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.cube));
|
|
texDescriptor.sampler = textures.cube.sampler;
|
|
texDescriptor.imageView = textures.cube.view;
|
|
writeDescriptorSets[0].dstSet = descriptorSets.cube;
|
|
writeDescriptorSets[1].dstSet = descriptorSets.cube;
|
|
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
|
|
}
|
|
|
|
void preparePipelines()
|
|
{
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
|
|
vkTools::initializers::pipelineInputAssemblyStateCreateInfo(
|
|
VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
|
|
0,
|
|
VK_FALSE);
|
|
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState =
|
|
vkTools::initializers::pipelineRasterizationStateCreateInfo(
|
|
VK_POLYGON_MODE_FILL,
|
|
VK_CULL_MODE_BACK_BIT,
|
|
VK_FRONT_FACE_CLOCKWISE,
|
|
0);
|
|
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState =
|
|
vkTools::initializers::pipelineColorBlendAttachmentState(
|
|
0xf,
|
|
VK_FALSE);
|
|
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState =
|
|
vkTools::initializers::pipelineColorBlendStateCreateInfo(
|
|
1,
|
|
&blendAttachmentState);
|
|
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState =
|
|
vkTools::initializers::pipelineDepthStencilStateCreateInfo(
|
|
VK_TRUE,
|
|
VK_TRUE,
|
|
VK_COMPARE_OP_LESS_OR_EQUAL);
|
|
|
|
VkPipelineViewportStateCreateInfo viewportState =
|
|
vkTools::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
|
|
VkPipelineMultisampleStateCreateInfo multisampleState =
|
|
vkTools::initializers::pipelineMultisampleStateCreateInfo(
|
|
VK_SAMPLE_COUNT_1_BIT,
|
|
0);
|
|
|
|
std::vector<VkDynamicState> dynamicStateEnables = {
|
|
VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR
|
|
};
|
|
VkPipelineDynamicStateCreateInfo dynamicState =
|
|
vkTools::initializers::pipelineDynamicStateCreateInfo(
|
|
dynamicStateEnables.data(),
|
|
dynamicStateEnables.size(),
|
|
0);
|
|
|
|
// Wire frame rendering pipeline
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
shaderStages[0] = loadShader(getAssetPath() + "shaders/textoverlay/mesh.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getAssetPath() + "shaders/textoverlay/mesh.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vkTools::initializers::pipelineCreateInfo(
|
|
pipelineLayout,
|
|
renderPass,
|
|
0);
|
|
|
|
pipelineCreateInfo.pVertexInputState = &vertices.inputState;
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = shaderStages.size();
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
|
|
vkTools::checkResult(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.solid));
|
|
|
|
// Background rendering pipeline
|
|
depthStencilState.depthTestEnable = VK_FALSE;
|
|
depthStencilState.depthWriteEnable = VK_FALSE;
|
|
|
|
rasterizationState.polygonMode = VK_POLYGON_MODE_FILL;
|
|
|
|
shaderStages[0] = loadShader(getAssetPath() + "shaders/textoverlay/background.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getAssetPath() + "shaders/textoverlay/background.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
vkTools::checkResult(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.background));
|
|
}
|
|
|
|
// Prepare and initialize uniform buffer containing shader uniforms
|
|
void prepareUniformBuffers()
|
|
{
|
|
// Vertex shader uniform buffer block
|
|
createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
sizeof(uboVS),
|
|
&uboVS,
|
|
&uniformData.vsScene.buffer,
|
|
&uniformData.vsScene.memory,
|
|
&uniformData.vsScene.descriptor);
|
|
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
void updateUniformBuffers()
|
|
{
|
|
// Vertex shader
|
|
uboVS.projection = glm::perspective(glm::radians(60.0f), (float)width / (float)height, 0.1f, 256.0f);
|
|
|
|
glm::mat4 viewMatrix = glm::translate(glm::mat4(), glm::vec3(0.0f, 0.0f, zoom));
|
|
|
|
uboVS.model = viewMatrix * glm::translate(glm::mat4(), cameraPos);
|
|
uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
|
|
uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
|
|
uboVS.model = glm::rotate(uboVS.model, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
|
|
|
|
uint8_t *pData;
|
|
vkTools::checkResult(vkMapMemory(device, uniformData.vsScene.memory, 0, sizeof(uboVS), 0, (void **)&pData));
|
|
memcpy(pData, &uboVS, sizeof(uboVS));
|
|
vkUnmapMemory(device, uniformData.vsScene.memory);
|
|
}
|
|
|
|
void prepareTextOverlay()
|
|
{
|
|
// Load the text rendering shaders
|
|
std::vector<VkPipelineShaderStageCreateInfo> shaderStages;
|
|
shaderStages.push_back(loadShader(getAssetPath() + "shaders/textoverlay/text.vert.spv", VK_SHADER_STAGE_VERTEX_BIT));
|
|
shaderStages.push_back(loadShader(getAssetPath() + "shaders/textoverlay/text.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT));
|
|
|
|
textOverlay = new VulkanTextOverlay(
|
|
physicalDevice,
|
|
device,
|
|
queue,
|
|
frameBuffers,
|
|
colorformat,
|
|
depthFormat,
|
|
&width,
|
|
&height,
|
|
shaderStages
|
|
);
|
|
updateTextOverlay();
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
loadTextures();
|
|
loadMeshes();
|
|
setupVertexDescriptions();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepareTextOverlay();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
// todo
|
|
if (frameCounter == 0)
|
|
{
|
|
updateTextOverlay();
|
|
}
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
vkDeviceWaitIdle(device);
|
|
updateUniformBuffers();
|
|
updateTextOverlay();
|
|
}
|
|
|
|
virtual void windowResized()
|
|
{
|
|
updateTextOverlay();
|
|
}
|
|
|
|
virtual void keyPressed(uint32_t keyCode)
|
|
{
|
|
switch (keyCode)
|
|
{
|
|
case 0x6B:
|
|
case 0x20:
|
|
textOverlay->visible = !textOverlay->visible;
|
|
}
|
|
}
|
|
};
|
|
|
|
VulkanExample *vulkanExample;
|
|
|
|
#if defined(_WIN32)
|
|
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
if (vulkanExample != NULL)
|
|
{
|
|
vulkanExample->handleMessages(hWnd, uMsg, wParam, lParam);
|
|
}
|
|
return (DefWindowProc(hWnd, uMsg, wParam, lParam));
|
|
}
|
|
#elif defined(__linux__) && !defined(__ANDROID__)
|
|
static void handleEvent(const xcb_generic_event_t *event)
|
|
{
|
|
if (vulkanExample != NULL)
|
|
{
|
|
vulkanExample->handleEvent(event);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Main entry point
|
|
#if defined(_WIN32)
|
|
// Windows entry point
|
|
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, int nCmdShow)
|
|
#elif defined(__ANDROID__)
|
|
// Android entry point
|
|
void android_main(android_app* state)
|
|
#elif defined(__linux__)
|
|
// Linux entry point
|
|
int main(const int argc, const char *argv[])
|
|
#endif
|
|
{
|
|
#if defined(__ANDROID__)
|
|
// Removing this may cause the compiler to omit the main entry point
|
|
// which would make the application crash at start
|
|
app_dummy();
|
|
#endif
|
|
vulkanExample = new VulkanExample();
|
|
#if defined(_WIN32)
|
|
vulkanExample->setupWindow(hInstance, WndProc);
|
|
#elif defined(__ANDROID__)
|
|
// Attach vulkan example to global android application state
|
|
state->userData = vulkanExample;
|
|
state->onAppCmd = VulkanExample::handleAppCommand;
|
|
state->onInputEvent = VulkanExample::handleAppInput;
|
|
vulkanExample->androidApp = state;
|
|
#elif defined(__linux__)
|
|
vulkanExample->setupWindow();
|
|
#endif
|
|
#if !defined(__ANDROID__)
|
|
vulkanExample->initSwapchain();
|
|
vulkanExample->prepare();
|
|
#endif
|
|
vulkanExample->renderLoop();
|
|
delete(vulkanExample);
|
|
#if !defined(__ANDROID__)
|
|
return 0;
|
|
#endif
|
|
} |