Method OnPostRender

Source/Engine/Engine/Base/GameBase.cpp:204–260

}

void GameBaseImpl::OnPostRender(GPUContext* context, RenderContext& renderContext)
{
    // Handle missing splash screen texture case
    if (SplashScreen == nullptr)
    {
        OnSplashScreenEnd();
        return;
    }

    // Wait for texture loaded before showing splash screen
    if (!SplashScreen->IsLoaded() || SplashScreen.Get()->GetResidentMipLevels() != SplashScreen.Get()->GetMipLevels())
    {
        return;
    }
    const auto splashScreen = SplashScreen.Get()->GetTexture();

    // Configuration
    const float fadeTime = 0.5f;
    const float showTime = 1.0f;
    const float totalTime = fadeTime + showTime + fadeTime;

    // Update animation
    const auto deltaTime = static_cast<float>(Time::Draw.UnscaledDeltaTime.GetTotalSeconds());
    SplashScreenTime += deltaTime;
    if (SplashScreenTime >= totalTime)
    {
        OnSplashScreenEnd();
        return;
    }

    PROFILE_GPU_CPU_NAMED("Splash Screen");

    // Calculate visibility
    float fade = 1.0f;
    if (SplashScreenTime < fadeTime)
        fade = SplashScreenTime / fadeTime;
    else if (SplashScreenTime > fadeTime + showTime)
        fade = 1.0f - (SplashScreenTime - fadeTime - showTime) / fadeTime;

    // Calculate image area (fill screen, keep aspect ratio, and snap to pixels)
    const auto viewport = renderContext.Task->GetViewport();
    const Rectangle screenRect(viewport.X, viewport.Y, viewport.Width, viewport.Height);
    Rectangle imageArea = screenRect;
    imageArea.Scale(0.6f);
    const float aspectRatio = static_cast<float>(splashScreen->Width()) / static_cast<float>(splashScreen->Height());
    const float height = imageArea.GetWidth() / aspectRatio;
    imageArea.Location.Y += (imageArea.GetHeight() - height) * 0.5f;
    imageArea.Size.Y = height;
    imageArea.Location = Float2::Ceil(imageArea.Location);
    imageArea.Size = Float2::Ceil(imageArea.Size);

    // Draw
    Render2D::Begin(GPUDevice::Instance->GetMainContext(), renderContext.Task->GetOutputView(), nullptr, viewport);
    Render2D::FillRectangle(screenRect, Color::Black);
    Render2D::DrawTexture(splashScreen, imageArea, Color(1.0f, 1.0f, 1.0f, fade));
    Render2D::End();
}