Method BatchGeometry

libs/drape_frontend/route_shape.cpp:593–632

}

void RouteShape::BatchGeometry(ref_ptr<dp::GraphicsContext> context, dp::RenderState const & state,
                               ref_ptr<void> geometry, uint32_t geomSize, ref_ptr<void> joinsGeometry,
                               uint32_t joinsGeomSize, m2::RectD const & boundingBox,
                               dp::BindingInfo const & bindingInfo, RouteRenderProperty & property)
{
  auto verticesCount = geomSize + joinsGeomSize;
  if (verticesCount == 0)
    return;

  uint32_t constexpr kMinBatchSize = 100;
  uint32_t constexpr kMaxBatchSize = 65000;
  uint32_t constexpr kIndicesScalar = 2;

  verticesCount = math::Clamp(verticesCount, kMinBatchSize, kMaxBatchSize);
  auto const indicesCount = math::Clamp(verticesCount * kIndicesScalar, kMinBatchSize, kMaxBatchSize);

  dp::Batcher batcher(indicesCount, verticesCount);
  batcher.SetBatcherHash(static_cast<uint64_t>(BatcherBucket::Routing));
  dp::SessionGuard guard(context, batcher,
                         [&property, &boundingBox](dp::RenderState const & state, drape_ptr<dp::RenderBucket> && b)
  {
    property.m_buckets.push_back(std::move(b));
    property.m_boundingBoxes.push_back(boundingBox);
    property.m_state = state;
  });

  if (geomSize != 0)
  {
    dp::AttributeProvider provider(1 /* stream count */, geomSize);
    provider.InitStream(0 /* stream index */, bindingInfo, geometry);
    batcher.InsertListOfStrip(context, state, make_ref(&provider), 4);
  }

  if (joinsGeomSize != 0)
  {
    dp::AttributeProvider joinsProvider(1 /* stream count */, joinsGeomSize);
    joinsProvider.InitStream(0 /* stream index */, bindingInfo, joinsGeometry);
    batcher.InsertTriangleList(context, state, make_ref(&joinsProvider));
  }
}
}  // namespace df