Method buildUI

Rtxpt/SampleUI.cpp:382–1990

void SampleUI::buildUI(void)
{
    if (!m_ui.ShowUI)
        return;

    RAII_SCOPE( ImGui::PushFont(m_defaultFont->GetScaledFont());, ImGui::PopFont(); );

    // Ideally we'd want to rework UI scaling so that it is not based on m_currentScale but on ImGui::GetFontSize() so we can freely change fonts
    auto& io = ImGui::GetIO();
    float scaledWidth = io.DisplaySize.x; 
    float scaledHeight = io.DisplaySize.y;

    const float defWindowWidth = 335.0f * m_currentScale;
    const float defItemWidth = defWindowWidth * 0.3f * m_currentScale;

    auto imGuiCheckboxUInt32 = [ & ](const char* label, uint32_t* v)
    {
        bool pv = (*v) != 0;
        bool ret = ImGui::Checkbox(label, &pv);
        *v = pv ? (1) : (0);
        return ret;
    };

    {
        ImGui::SetNextWindowPos(ImVec2(10.f, 10.f), ImGuiCond_Appearing);
        ImGui::SetNextWindowSize(ImVec2(defWindowWidth, scaledHeight - 20), ImGuiCond_Appearing);

        RAII_SCOPE( ImGui::Begin("Settings", 0, ImGuiWindowFlags_None /*AlwaysAutoResize*/); , ImGui::End(); );
        RAII_SCOPE( ImGui::PushItemWidth(defItemWidth); , ImGui::PopItemWidth(); );
            
        const float indent = (int)ImGui::GetStyle().IndentSpacing*0.4f;

        ImGui::Text("%s, %s", GetDeviceManager()->GetRendererString(), m_app.GetResolutionInfo().c_str() );
        ImGui::Text(m_app.GetFPSInfo().c_str());

        if (BuildUIScriptsAndEtc())
        {
            return;
        }

        if (ImGui::CollapsingHeader("Display and performance")) //, ImGuiTreeNodeFlags_DefaultOpen))
        {
            RAII_SCOPE(ImGui::Indent(indent);, ImGui::Unindent(indent); );
            
            {
                if (ImGui::Button(StringFormat("Resolution:  %dx%d (click to change)", m_app.GetDisplaySize().x, m_app.GetDisplaySize().y, m_app.GetRenderSize().x, m_app.GetRenderSize().y).c_str(), { -1, 0 }))
                    ImGui::OpenPopup("Resolution Picker");
                BuildUIResolutionPicker();
            }

            {
                const char* currentPresetName = "Custom";
                for (const auto& preset : s_performancePresets)
                    if (MatchesPreset(m_ui, preset)) { currentPresetName = preset.Name; break; }
                if (ImGui::Button(StringFormat("Perf. preset: %s (click to change)", currentPresetName).c_str(), { -1, 0 }))
                    ImGui::OpenPopup("Performance Preset");
                BuildUIPerformancePresets();
            }