Method OnContextCreate

libs/drape_frontend/frontend_renderer.cpp:2320–2376

}

void FrontendRenderer::OnContextCreate()
{
  TRACE_SECTION("[drape] OnContextCreate (FrontendRenderer)");
  LOG(LINFO, ("On context create."));

  m_context = make_ref(m_contextFactory->GetDrawContext());
  m_contextFactory->WaitForInitialization(m_context.get());

  m_context->MakeCurrent();

  m_context->Init(m_apiVersion);

  // Render empty frame here to avoid black initialization screen.
  RenderEmptyFrame();

  dp::SupportManager::Instance().Init(m_context);

  m_gpuProgramManager = make_unique_dp<gpu::ProgramManager>();
  m_gpuProgramManager->Init(m_context);

  dp::AlphaBlendingState::Apply(m_context);

  m_debugRectRenderer = make_unique_dp<DebugRectRenderer>(
      m_context, m_gpuProgramManager->GetProgram(gpu::Program::DebugRect), m_gpuProgramManager->GetParamsSetter());
  m_debugRectRenderer->SetEnabled(m_isDebugRectRenderingEnabled);

  m_overlayTree->SetDebugRectRenderer(make_ref(m_debugRectRenderer));
  m_overlayTree->SetVisualScale(VisualParams::Instance().GetVisualScale());

  // Resources recovering.
  m_screenQuadRenderer = make_unique_dp<ScreenQuadRenderer>(m_context);

  m_postprocessRenderer->Init(m_context, [this]()
  {
    CHECK(m_context != nullptr, ());
    if (!m_context->Validate())
      return false;
    m_context->SetFramebuffer(nullptr /* default */);
    return true;
  }, [this](ScreenBase const & modelView) { PreRender3dLayer(modelView); });

#ifndef OMIM_OS_IPHONE_SIMULATOR
  for (auto const & effect : m_enabledOnStartEffects)
    m_postprocessRenderer->SetEffectEnabled(m_context, effect, true /* enabled */);
  m_enabledOnStartEffects.clear();

  if (dp::SupportManager::Instance().IsAntialiasingEnabledByDefault() || m_screenshotMode)
    m_postprocessRenderer->SetEffectEnabled(m_context, PostprocessRenderer::Antialiasing, true);
#endif

  m_buildingsFramebuffer =
      make_unique_dp<dp::Framebuffer>(dp::TextureFormat::RGBA8, true /* depthEnabled */, false /* stencilEnabled */);
  m_buildingsFramebuffer->SetFramebufferFallback([this]()
  { return m_postprocessRenderer->OnFramebufferFallback(m_context); });

  m_transitBackground = make_unique_dp<ScreenQuadRenderer>(m_context);
}