working version of glyphs rendering with example
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ohyzha
172
examples/ExampleApps/TextExampleApp.cpp
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172
examples/ExampleApps/TextExampleApp.cpp
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include "TextExampleApp.hpp"
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#include "Scene/Scene.hpp"
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#include "Scene/Shader/Shader.hpp"
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#include "Scene/Geometry.hpp"
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#include "Scene/Text.hpp"
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#include "Scene/GeometryFactory.hpp"
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#include "Scene/Material.hpp"
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#include "Scene/Vertex.hpp"
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#include "Scene/SimpleDrawable.hpp"
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#include "Scene/UI/PerformanceInfo.hpp"
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#include "Scene/UniformBuffer.hpp"
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#include "Input/InputManager.hpp"
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#include "Host/GraphicsAppManager.hpp"
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#include "Host/GLFW/WindowGLFW.hpp"
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#include "Math/Math.hpp"
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#include "Base/EngineConfiguration.hpp"
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#include "Controller/FreeCamCameraController.hpp"
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#include "Image/ImageLoaderPng.hpp"
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#ifdef _WIN32
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#undef TRANSPARENT
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#endif
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namespace OpenVulkano
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{
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using namespace Scene;
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using namespace Input;
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using namespace Math;
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class TextExampleAppImpl final : public TextExampleApp
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{
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public:
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void Init() override
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{
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auto engineConfig = OpenVulkano::EngineConfiguration::GetEngineConfiguration();
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engineConfig->SetNumThreads(4);
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engineConfig->SetPreferFramebufferFormatSRGB(false);
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std::srand(1); // Fix seed for random numbers
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m_scene.Init();
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m_cam.Init(70, 16, 9, 0.1f, 100);
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m_scene.SetCamera(&m_cam);
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m_cfg.applyBorder = true;
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//m_cfg.smoothing = 1 / 16.f;
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const std::string symbols = "Ak?";
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const int N = symbols.size();
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const std::string font = (OpenVulkano::Utils::GetFontsDirectory() / "arial.ttf").string();
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Image::ImageLoaderPng pngLoader;
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m_uniBuffer.Init(sizeof(TextConfig), &m_cfg, 3);
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m_materials.resize(N);
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m_geos.resize(N);
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m_nodesPool.resize(N);
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m_drawablesPool.resize(N);
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m_textures.resize(N);
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m_sdfs.resize(N);
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m_shader.AddShaderProgram(OpenVulkano::ShaderProgramType::VERTEX, "Shader/text");
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m_shader.AddShaderProgram(OpenVulkano::ShaderProgramType::FRAGMENT, "Shader/text");
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m_shader.AddVertexInputDescription(OpenVulkano::Vertex::GetVertexInputDescription());
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m_shader.AddDescriptorSetLayoutBinding(Texture::DESCRIPTOR_SET_LAYOUT_BINDING);
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m_shader.AddDescriptorSetLayoutBinding(UniformBuffer::DESCRIPTOR_SET_LAYOUT_BINDING);
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m_shader.alphaBlend = true;
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m_shader.cullMode = CullMode::NONE;
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static float vertices[] = {
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// positions // texture coords
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-0.5f, 0.5f, 0.0f, 1.0f,
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-0.5f, -0.5f, 0.0f, 0.0f,
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0.5f, -0.5f, 1.0f, 0.0f,
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0.5f, 0.5f, 1.0f, 1.0f
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};
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uint32_t indices[] = { 1, 2, 3, 1, 3, 0 };
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Text text = Text(m_cfg);
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for (int i = 0; i < N; i++)
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{
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m_drawablesPool[i].SetDrawPhase(OpenVulkano::Scene::DrawPhase::BACKGROUND);
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const std::string fileName = std::string("output") + std::to_string(i + 1) + ".png";
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const std::string pngOutput = (OpenVulkano::Utils::GetBuildDirectory() / fileName).string();
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auto& drawable = m_drawablesPool[i];
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auto& mat = m_materials[i];
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auto& tex = m_textures[i];
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auto& geo = m_geos[i];
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drawable.Init(&m_shader, &geo, &mat, &m_uniBuffer);
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text.Init(font, symbols[i], pngOutput);
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m_sdfs[i] = pngLoader.loadFromFile(pngOutput);
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auto& sdf = m_sdfs[i];
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tex.resolution = sdf->resolution;
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tex.textureBuffer = sdf->data.Data();
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tex.format = sdf->dataFormat;
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tex.size = sdf->data.Size();
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mat.texture = &tex;
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geo.Init(4, 6);
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for (int j = 0; j < geo.vertexCount; j++)
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{
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geo.vertices[j].position.x = vertices[j * 4];
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geo.vertices[j].position.y = vertices[j * 4 + 1];
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geo.vertices[j].position.z = 0.f;
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geo.vertices[j].textureCoordinates.x = vertices[j * 4 + 2];
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geo.vertices[j].textureCoordinates.y = vertices[j * 4 + 3];
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}
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geo.SetIndices(indices, 6);
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m_nodesPool[i].Init();
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m_nodesPool[i].SetMatrix(Math::Utils::translate(
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glm::mat4x4(1.f), Vector3f(-3 + std::rand() % 3, -2 + std::rand() % 2, 2)));
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m_nodesPool[i].AddDrawable(&drawable);
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m_scene.GetRoot()->AddChild(&m_nodesPool[i]);
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}
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GetGraphicsAppManager()->GetRenderer()->SetScene(&m_scene);
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m_camController.Init(&m_cam);
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m_camController.SetDefaultKeybindings();
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m_camController.SetPosition({ -2, -1, 5 });
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m_camController.SetBoostFactor(5);
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std::shared_ptr<OpenVulkano::Scene::UI::PerformanceInfo> m_perfInfo =
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std::make_shared<OpenVulkano::Scene::UI::PerformanceInfo>();
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m_ui.AddElement(m_perfInfo);
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GetGraphicsAppManager()->GetRenderer()->SetActiveUi(&m_ui);
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}
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void Tick() override
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{
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m_camController.Tick();
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}
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void Close() override
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{
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}
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private:
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OpenVulkano::Scene::Scene m_scene;
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PerspectiveCamera m_cam;
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UniformBuffer m_uniBuffer;
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OpenVulkano::FreeCamCameraController m_camController;
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Shader m_shader;
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TextConfig m_cfg;
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std::vector<Material> m_materials;
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std::vector<SimpleDrawable> m_drawablesPool;
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std::vector<Geometry> m_geos;
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std::vector<Node> m_nodesPool;
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std::vector<Texture> m_textures;
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std::vector<std::unique_ptr<Image::Image>> m_sdfs;
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Vector3f_SIMD m_position = { 0, 0, -10 };
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OpenVulkano::Scene::UI::SimpleUi m_ui;
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std::shared_ptr<OpenVulkano::Scene::UI::PerformanceInfo> m_perfInfo;
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};
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IGraphicsApp* TextExampleApp::Create() { return new TextExampleAppImpl(); }
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std::unique_ptr<IGraphicsApp> TextExampleApp::CreateUnique()
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{
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return std::make_unique<TextExampleAppImpl>();
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}
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}
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#pragma clang diagnostic pop
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#pragma clang diagnostic pop
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