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Connect ImGui render to QOpenGLWidgets

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This commit is contained in:
Dan Paulat 2022-11-20 22:12:05 -06:00
parent 3c69ad28c6
commit dd1b4f27c8
4 changed files with 76 additions and 6 deletions
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56
scwx-qt/source/scwx/qt/manager/resource_manager.cpp
View file

@ -2,6 +2,12 @@
#include <scwx/qt/config/county_database.hpp>
#include <scwx/qt/util/font.hpp>
#include <scwx/qt/util/texture_atlas.hpp>
#include <scwx/util/logger.hpp>
#include <backends/imgui_impl_opengl3.h>
#include <imgui.h>
#include <QOffscreenSurface>
#include <QOpenGLContext>
namespace scwx
{
@ -11,20 +17,54 @@ namespace manager
{
namespace ResourceManager
{
static void LoadFonts();
static const std::string logPrefix_ = "scwx::qt::manager::ResourceManager";
static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
void PreLoad()
static void InitializeImGui();
static void LoadFonts();
static void LoadTextures();
static void ShutdownImGui();
static std::unique_ptr<QOffscreenSurface> surface_ {};
void Initialize()
{
config::CountyDatabase::Initialize();
InitializeImGui();
LoadFonts();
LoadTextures();
}
void Shutdown()
{
ShutdownImGui();
}
static void InitializeImGui()
{
// Create OpenGL Offscreen Surface
surface_ = std::make_unique<QOffscreenSurface>();
surface_->create();
if (!QOpenGLContext::globalShareContext()->makeCurrent(surface_.get()))
{
logger_->warn("Failed to initialize offscreen surface");
}
// Initialize ImGui
ImGui::CreateContext();
ImGui_ImplOpenGL3_Init();
QOpenGLContext::globalShareContext()->doneCurrent();
}
static void LoadFonts()
{
config::CountyDatabase::Initialize();
util::Font::Create(":/res/fonts/din1451alt.ttf");
util::Font::Create(":/res/fonts/din1451alt_g.ttf");
}
static void LoadTextures()
{
util::TextureAtlas& textureAtlas = util::TextureAtlas::Instance();
textureAtlas.RegisterTexture("lines/default-1x7",
":/res/textures/lines/default-1x7.png");
@ -33,6 +73,14 @@ static void LoadFonts()
textureAtlas.BuildAtlas(8, 8);
}
static void ShutdownImGui()
{
QOpenGLContext::globalShareContext()->makeCurrent(surface_.get());
ImGui_ImplOpenGL3_Shutdown();
ImGui::DestroyContext();
QOpenGLContext::globalShareContext()->doneCurrent();
}
} // namespace ResourceManager
} // namespace manager
} // namespace qt

3
scwx-qt/source/scwx/qt/manager/resource_manager.hpp
View file

@ -8,7 +8,8 @@ namespace manager
{
namespace ResourceManager
{
void PreLoad();
void Initialize();
void Shutdown();
} // namespace ResourceManager
} // namespace manager
} // namespace qt