695 lines
No EOL
21 KiB
C++
695 lines
No EOL
21 KiB
C++
/*
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* Vulkan Example - Font rendering using signed distance fields
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*
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* Font generated using https://github.com/libgdx/libgdx/wiki/Hiero
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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 <sstream>
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#include <assert.h>
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#include <vector>
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#include <array>
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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 <vulkan/vulkan.h>
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#include "vulkanexamplebase.h"
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#include "VulkanTexture.hpp"
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#include "VulkanBuffer.hpp"
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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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struct Vertex {
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float pos[3];
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float uv[2];
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};
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// AngelCode .fnt format structs and classes
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struct bmchar {
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uint32_t x, y;
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uint32_t width;
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uint32_t height;
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int32_t xoffset;
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int32_t yoffset;
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int32_t xadvance;
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uint32_t page;
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};
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// Quick and dirty : complete ASCII table
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// Only chars present in the .fnt are filled with data!
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std::array<bmchar, 255> fontChars;
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int32_t nextValuePair(std::stringstream *stream)
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{
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std::string pair;
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*stream >> pair;
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uint32_t spos = pair.find("=");
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std::string value = pair.substr(spos + 1);
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int32_t val = std::stoi(value);
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return val;
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}
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class VulkanExample : public VulkanExampleBase
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{
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public:
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bool splitScreen = true;
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struct {
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vks::Texture2D fontSDF;
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vks::Texture2D fontBitmap;
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} textures;
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struct {
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VkPipelineVertexInputStateCreateInfo inputState;
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std::vector<VkVertexInputBindingDescription> bindingDescriptions;
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std::vector<VkVertexInputAttributeDescription> attributeDescriptions;
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} vertices;
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vks::Buffer vertexBuffer;
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vks::Buffer indexBuffer;
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uint32_t indexCount;
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struct {
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vks::Buffer vs;
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vks::Buffer fs;
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} uniformBuffers;
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struct UBOVS {
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glm::mat4 projection;
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glm::mat4 model;
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} uboVS;
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struct UBOFS {
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glm::vec4 outlineColor = glm::vec4(1.0f, 0.0f, 0.0f, 0.0f);
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float outlineWidth = 0.6f;
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float outline = true;
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} uboFS;
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struct {
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VkPipeline sdf;
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VkPipeline bitmap;
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} pipelines;
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struct {
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VkDescriptorSet sdf;
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VkDescriptorSet bitmap;
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} descriptorSets;
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VkPipelineLayout pipelineLayout;
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VkDescriptorSetLayout descriptorSetLayout;
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VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
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{
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zoom = -2.0f;
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title = "Distance field font rendering";
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settings.overlay = true;
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}
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~VulkanExample()
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{
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// Clean up used Vulkan resources
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// Note : Inherited destructor cleans up resources stored in base class
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// Clean up texture resources
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textures.fontSDF.destroy();
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textures.fontBitmap.destroy();
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vkDestroyPipeline(device, pipelines.sdf, nullptr);
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vkDestroyPipeline(device, pipelines.bitmap, nullptr);
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vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
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vertexBuffer.destroy();
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indexBuffer.destroy();
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uniformBuffers.vs.destroy();
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uniformBuffers.fs.destroy();
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}
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// Basic parser fpr AngelCode bitmap font format files
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// See http://www.angelcode.com/products/bmfont/doc/file_format.html for details
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void parsebmFont()
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{
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std::string fileName = getAssetPath() + "font.fnt";
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#if defined(__ANDROID__)
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// Font description file is stored inside the apk
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// So we need to load it using the asset manager
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AAsset* asset = AAssetManager_open(androidApp->activity->assetManager, fileName.c_str(), AASSET_MODE_STREAMING);
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assert(asset);
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size_t size = AAsset_getLength(asset);
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assert(size > 0);
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void *fileData = malloc(size);
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AAsset_read(asset, fileData, size);
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AAsset_close(asset);
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std::stringbuf sbuf((const char*)fileData);
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std::istream istream(&sbuf);
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#else
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std::filebuf fileBuffer;
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fileBuffer.open(fileName, std::ios::in);
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std::istream istream(&fileBuffer);
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#endif
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assert(istream.good());
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while (!istream.eof())
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{
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std::string line;
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std::stringstream lineStream;
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std::getline(istream, line);
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lineStream << line;
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std::string info;
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lineStream >> info;
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if (info == "char")
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{
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// char id
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uint32_t charid = nextValuePair(&lineStream);
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// Char properties
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fontChars[charid].x = nextValuePair(&lineStream);
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fontChars[charid].y = nextValuePair(&lineStream);
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fontChars[charid].width = nextValuePair(&lineStream);
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fontChars[charid].height = nextValuePair(&lineStream);
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fontChars[charid].xoffset = nextValuePair(&lineStream);
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fontChars[charid].yoffset = nextValuePair(&lineStream);
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fontChars[charid].xadvance = nextValuePair(&lineStream);
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fontChars[charid].page = nextValuePair(&lineStream);
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}
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}
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}
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void loadAssets()
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{
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textures.fontSDF.loadFromFile(getAssetPath() + "textures/font_sdf_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
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textures.fontBitmap.loadFromFile(getAssetPath() + "textures/font_bitmap_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
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}
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void reBuildCommandBuffers()
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{
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if (!checkCommandBuffers())
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{
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destroyCommandBuffers();
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createCommandBuffers();
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}
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buildCommandBuffers();
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}
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void buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = defaultClearColor;
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vks::initializers::viewport((float)width, (splitScreen) ? (float)height / 2.0f : (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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VkDeviceSize offsets[1] = { 0 };
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// Signed distance field font
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.sdf, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.sdf);
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vkCmdBindVertexBuffers(drawCmdBuffers[i], VERTEX_BUFFER_BIND_ID, 1, &vertexBuffer.buffer, offsets);
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vkCmdBindIndexBuffer(drawCmdBuffers[i], indexBuffer.buffer, 0, VK_INDEX_TYPE_UINT32);
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vkCmdDrawIndexed(drawCmdBuffers[i], indexCount, 1, 0, 0, 0);
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// Linear filtered bitmap font
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if (splitScreen)
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{
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viewport.y = (float)height / 2.0f;
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSets.bitmap, 0, NULL);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.bitmap);
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vkCmdDrawIndexed(drawCmdBuffers[i], indexCount, 1, 0, 0, 0);
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}
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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}
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// Creates a vertex buffer containing quads for the passed text
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void generateText(std:: string text)
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{
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std::vector<Vertex> vertices;
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std::vector<uint32_t> indices;
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uint32_t indexOffset = 0;
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float w = textures.fontSDF.width;
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float posx = 0.0f;
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float posy = 0.0f;
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for (uint32_t i = 0; i < text.size(); i++)
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{
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bmchar *charInfo = &fontChars[(int)text[i]];
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if (charInfo->width == 0)
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charInfo->width = 36;
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float charw = ((float)(charInfo->width) / 36.0f);
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float dimx = 1.0f * charw;
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float charh = ((float)(charInfo->height) / 36.0f);
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float dimy = 1.0f * charh;
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posy = 1.0f - charh;
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float us = charInfo->x / w;
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float ue = (charInfo->x + charInfo->width) / w;
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float ts = charInfo->y / w;
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float te = (charInfo->y + charInfo->height) / w;
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float xo = charInfo->xoffset / 36.0f;
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float yo = charInfo->yoffset / 36.0f;
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vertices.push_back({ { posx + dimx + xo, posy + dimy, 0.0f }, { ue, te } });
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vertices.push_back({ { posx + xo, posy + dimy, 0.0f }, { us, te } });
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vertices.push_back({ { posx + xo, posy, 0.0f }, { us, ts } });
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vertices.push_back({ { posx + dimx + xo, posy, 0.0f }, { ue, ts } });
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std::array<uint32_t, 6> letterIndices = { 0,1,2, 2,3,0 };
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for (auto& index : letterIndices)
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{
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indices.push_back(indexOffset + index);
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}
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indexOffset += 4;
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float advance = ((float)(charInfo->xadvance) / 36.0f);
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posx += advance;
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}
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indexCount = indices.size();
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// Center
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for (auto& v : vertices)
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{
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v.pos[0] -= posx / 2.0f;
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v.pos[1] -= 0.5f;
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}
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// Generate host accesible buffers for the text vertices and indices and upload the data
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VK_CHECK_RESULT(vulkanDevice->createBuffer(
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VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
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VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
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&vertexBuffer,
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vertices.size() * sizeof(Vertex),
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vertices.data()));
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VK_CHECK_RESULT(vulkanDevice->createBuffer(
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VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
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VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
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&indexBuffer,
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indices.size() * sizeof(uint32_t),
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indices.data()));
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}
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void setupVertexDescriptions()
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{
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// Binding description
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vertices.bindingDescriptions.resize(1);
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vertices.bindingDescriptions[0] =
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vks::initializers::vertexInputBindingDescription(
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VERTEX_BUFFER_BIND_ID,
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sizeof(Vertex),
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VK_VERTEX_INPUT_RATE_VERTEX);
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// Attribute descriptions
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// Describes memory layout and shader positions
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vertices.attributeDescriptions.resize(2);
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// Location 0 : Position
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vertices.attributeDescriptions[0] =
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vks::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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0,
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VK_FORMAT_R32G32B32_SFLOAT,
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0);
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// Location 1 : Texture coordinates
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vertices.attributeDescriptions[1] =
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vks::initializers::vertexInputAttributeDescription(
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VERTEX_BUFFER_BIND_ID,
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1,
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VK_FORMAT_R32G32_SFLOAT,
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sizeof(float) * 3);
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vertices.inputState = vks::initializers::pipelineVertexInputStateCreateInfo();
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vertices.inputState.vertexBindingDescriptionCount = vertices.bindingDescriptions.size();
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vertices.inputState.pVertexBindingDescriptions = vertices.bindingDescriptions.data();
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vertices.inputState.vertexAttributeDescriptionCount = vertices.attributeDescriptions.size();
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vertices.inputState.pVertexAttributeDescriptions = vertices.attributeDescriptions.data();
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}
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void setupDescriptorPool()
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{
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std::vector<VkDescriptorPoolSize> poolSizes =
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{
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 4),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2)
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo =
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vks::initializers::descriptorPoolCreateInfo(
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poolSizes.size(),
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poolSizes.data(),
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2);
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VkResult vkRes = vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool);
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assert(!vkRes);
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}
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void setupDescriptorSetLayout()
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{
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std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings =
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{
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// Binding 0 : Vertex shader uniform buffer
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vks::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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VK_SHADER_STAGE_VERTEX_BIT,
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0),
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// Binding 1 : Fragment shader image sampler
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vks::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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1),
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// Binding 2 : Fragment shader uniform buffer
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vks::initializers::descriptorSetLayoutBinding(
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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VK_SHADER_STAGE_FRAGMENT_BIT,
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2)
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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout =
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vks::initializers::descriptorSetLayoutCreateInfo(
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setLayoutBindings.data(),
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setLayoutBindings.size());
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
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VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo =
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vks::initializers::pipelineLayoutCreateInfo(
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&descriptorSetLayout,
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1);
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VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
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}
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void setupDescriptorSet()
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{
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VkDescriptorSetAllocateInfo allocInfo =
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vks::initializers::descriptorSetAllocateInfo(
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descriptorPool,
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&descriptorSetLayout,
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1);
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// Signed distance front descriptor set
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.sdf));
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// Image descriptor for the color map texture
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VkDescriptorImageInfo texDescriptor =
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vks::initializers::descriptorImageInfo(
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textures.fontSDF.sampler,
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textures.fontSDF.view,
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VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
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std::vector<VkWriteDescriptorSet> writeDescriptorSets =
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{
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// Binding 0 : Vertex shader uniform buffer
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vks::initializers::writeDescriptorSet(
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descriptorSets.sdf,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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0,
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&uniformBuffers.vs.descriptor),
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// Binding 1 : Fragment shader texture sampler
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vks::initializers::writeDescriptorSet(
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descriptorSets.sdf,
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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1,
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&texDescriptor),
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// Binding 2 : Fragment shader uniform buffer
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vks::initializers::writeDescriptorSet(
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descriptorSets.sdf,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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2,
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&uniformBuffers.fs.descriptor)
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};
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vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
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// Default font rendering descriptor set
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSets.bitmap));
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// Image descriptor for the color map texture
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texDescriptor.sampler = textures.fontBitmap.sampler;
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texDescriptor.imageView = textures.fontBitmap.view;
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writeDescriptorSets =
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{
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// Binding 0 : Vertex shader uniform buffer
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vks::initializers::writeDescriptorSet(
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descriptorSets.bitmap,
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VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
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0,
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&uniformBuffers.vs.descriptor),
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// Binding 1 : Fragment shader texture sampler
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vks::initializers::writeDescriptorSet(
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descriptorSets.bitmap,
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VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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1,
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&texDescriptor)
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};
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vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
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}
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void preparePipelines()
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{
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VkPipelineInputAssemblyStateCreateInfo inputAssemblyState =
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vks::initializers::pipelineInputAssemblyStateCreateInfo(
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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,
|
|
0);
|
|
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState =
|
|
vks::initializers::pipelineColorBlendAttachmentState(
|
|
0xf,
|
|
VK_TRUE);
|
|
|
|
blendAttachmentState.blendEnable = VK_TRUE;
|
|
blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
|
|
blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
|
|
blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
|
|
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState =
|
|
vks::initializers::pipelineColorBlendStateCreateInfo(
|
|
1,
|
|
&blendAttachmentState);
|
|
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState =
|
|
vks::initializers::pipelineDepthStencilStateCreateInfo(
|
|
VK_FALSE,
|
|
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,
|
|
0);
|
|
|
|
std::vector<VkDynamicState> dynamicStateEnables = {
|
|
VK_DYNAMIC_STATE_VIEWPORT,
|
|
VK_DYNAMIC_STATE_SCISSOR
|
|
};
|
|
VkPipelineDynamicStateCreateInfo dynamicState =
|
|
vks::initializers::pipelineDynamicStateCreateInfo(
|
|
dynamicStateEnables.data(),
|
|
dynamicStateEnables.size(),
|
|
0);
|
|
|
|
// Load shaders
|
|
std::array<VkPipelineShaderStageCreateInfo,2> shaderStages;
|
|
|
|
shaderStages[0] = loadShader(getAssetPath() + "shaders/distancefieldfonts/sdf.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getAssetPath() + "shaders/distancefieldfonts/sdf.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo =
|
|
vks::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();
|
|
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.sdf));
|
|
|
|
// Default bitmap font rendering pipeline
|
|
shaderStages[0] = loadShader(getAssetPath() + "shaders/distancefieldfonts/bitmap.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getAssetPath() + "shaders/distancefieldfonts/bitmap.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.bitmap));
|
|
}
|
|
|
|
// 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,
|
|
&uniformBuffers.vs,
|
|
sizeof(uboVS)));
|
|
|
|
// Fragment sahder uniform buffer block (Contains font rendering parameters)
|
|
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
|
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
|
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
|
&uniformBuffers.fs,
|
|
sizeof(uboFS)));
|
|
|
|
// Map persistent
|
|
VK_CHECK_RESULT(uniformBuffers.vs.map());
|
|
VK_CHECK_RESULT(uniformBuffers.fs.map());
|
|
|
|
updateUniformBuffers();
|
|
updateFontSettings();
|
|
}
|
|
|
|
void updateUniformBuffers()
|
|
{
|
|
// Vertex shader
|
|
glm::mat4 viewMatrix = glm::mat4(1.0f);
|
|
uboVS.projection = glm::perspective(glm::radians(splitScreen ? 30.0f : 45.0f), (float)width / (float)(height * ((splitScreen) ? 0.5f : 1.0f)), 0.001f, 256.0f);
|
|
viewMatrix = glm::translate(viewMatrix, glm::vec3(0.0f, 0.0f, splitScreen ? zoom : zoom - 2.0f));
|
|
|
|
uboVS.model = glm::mat4(1.0f);
|
|
uboVS.model = viewMatrix * glm::translate(uboVS.model, 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));
|
|
|
|
memcpy(uniformBuffers.vs.mapped, &uboVS, sizeof(uboVS));
|
|
}
|
|
|
|
void updateFontSettings()
|
|
{
|
|
// Fragment shader
|
|
memcpy(uniformBuffers.fs.mapped, &uboFS, sizeof(uboFS));
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
VulkanExampleBase::prepareFrame();
|
|
|
|
// Command buffer to be sumitted to the queue
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
|
|
// Submit to queue
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
parsebmFont();
|
|
loadAssets();
|
|
generateText("Vulkan");
|
|
setupVertexDescriptions();
|
|
prepareUniformBuffers();
|
|
setupDescriptorSetLayout();
|
|
preparePipelines();
|
|
setupDescriptorPool();
|
|
setupDescriptorSet();
|
|
buildCommandBuffers();
|
|
prepared = true;
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
draw();
|
|
}
|
|
|
|
virtual void viewChanged()
|
|
{
|
|
updateUniformBuffers();
|
|
}
|
|
|
|
virtual void OnUpdateUIOverlay(vks::UIOverlay *overlay)
|
|
{
|
|
if (overlay->header("Settings")) {
|
|
bool outline = (uboFS.outline == 1.0f);
|
|
if (overlay->checkBox("Outline", &outline)) {
|
|
uboFS.outline = outline ? 1.0f : 0.0f;
|
|
updateFontSettings();
|
|
}
|
|
if (overlay->checkBox("Splitscreen", &splitScreen)) {
|
|
buildCommandBuffers();
|
|
updateUniformBuffers();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN() |