Method EndFrame

libs/drape_frontend/postprocess_renderer.cpp:258–369

}

bool PostprocessRenderer::EndFrame(ref_ptr<dp::GraphicsContext> context, ref_ptr<gpu::ProgramManager> gpuProgramManager,
                                   dp::Viewport const & viewport)
{
  TRACE_SECTION("[drape] PostprocessRenderer::EndFrame");
  if (!IsEnabled())
    return true;

  // Subpixel Morphological Antialiasing (SMAA).
  if (m_frameStarted && CanRenderAntialiasing())
  {
    ASSERT(m_staticTextures->m_smaaAreaTexture != nullptr, ());
    ASSERT(m_staticTextures->m_smaaSearchTexture != nullptr, ());

    if (m_apiVersion == dp::ApiVersion::OpenGLES3)
    {
      ASSERT_GREATER(m_staticTextures->m_smaaAreaTexture->GetID(), 0, ());
      ASSERT_GREATER(m_staticTextures->m_smaaSearchTexture->GetID(), 0, ());
    }

    context->SetClearColor(dp::Color::Transparent());
    context->SetStencilTestEnabled(true);

    // Render edges to texture.
    {
      TRACE_SECTION("[drape][SMAA] Edges rendering");
      context->SetFramebuffer(make_ref(m_edgesFramebuffer));
      context->Clear(dp::ClearBits::ColorBit, dp::ClearBits::ColorBit | dp::ClearBits::StencilBit /* storeBits */);
      if (m_apiVersion == dp::ApiVersion::Metal || m_apiVersion == dp::ApiVersion::Vulkan)
        context->SetStencilFunction(dp::StencilFace::FrontAndBack, dp::TestFunction::Greater);
      else
        context->SetStencilFunction(dp::StencilFace::FrontAndBack, dp::TestFunction::NotEqual);
      context->SetStencilActions(dp::StencilFace::FrontAndBack, dp::StencilAction::Zero, dp::StencilAction::Zero,
                                 dp::StencilAction::Replace);
      context->SetStencilReferenceValue(1);
      context->ApplyFramebuffer("SMAA edges");
      viewport.Apply(context);

      EdgesRenderParams params;
      params.SetParams(m_mainFramebuffer->GetTexture(), m_width, m_height);

      auto program = gpuProgramManager->GetProgram(params.GetRenderState().GetProgram<gpu::Program>());
      m_screenQuadRenderer->Render(context, program, params.GetRenderState(), gpuProgramManager->GetParamsSetter(),
                                   params.GetProgramParams());
    }

    // Render blending weight to texture.
    {
      TRACE_SECTION("[drape][SMAA] Blending weight rendering");
      context->SetFramebuffer(make_ref(m_blendingWeightFramebuffer));
      context->Clear(dp::ClearBits::ColorBit, dp::ClearBits::ColorBit | dp::ClearBits::StencilBit /* storeBits */);
      context->SetStencilFunction(dp::StencilFace::FrontAndBack, dp::TestFunction::Equal);
      context->SetStencilActions(dp::StencilFace::FrontAndBack, dp::StencilAction::Keep, dp::StencilAction::Keep,
                                 dp::StencilAction::Keep);
      context->ApplyFramebuffer("SMAA blending");
      viewport.Apply(context);

      BlendingWeightRenderParams params;
      params.SetParams(m_edgesFramebuffer->GetTexture(), m_staticTextures->m_smaaAreaTexture,