Method checkTileCount

src/layers/DisplayList.cpp:363–387

}

void DisplayList::checkTileCount(Surface* renderSurface) {
  DEBUG_ASSERT(renderSurface != nullptr);
  auto tileCountX =
      ceilf(static_cast<float>(renderSurface->width()) / static_cast<float>(_tileSize));
  auto tileCountY =
      ceilf(static_cast<float>(renderSurface->height()) / static_cast<float>(_tileSize));
  auto minTileCount = static_cast<int>(tileCountX + 1) * static_cast<int>(tileCountY + 1);
  if (totalTileCount > 0) {
    if (totalTileCount >= minTileCount) {
      return;
    }
    resetCaches();
  }
  totalTileCount = std::max(minTileCount, _maxTileCount);
  auto maxTileCountPerAtlas = getMaxTileCountPerAtlas(renderSurface->getContext());
  if (maxTileCountPerAtlas <= 0) {
    return;
  }
  auto remainingTileCount = totalTileCount % maxTileCountPerAtlas;
  totalTileCount -= remainingTileCount;
  int width = static_cast<int>(sqrtf(static_cast<float>(remainingTileCount)));
  int height =
      static_cast<int>(ceilf(static_cast<float>(remainingTileCount) / static_cast<float>(width)));
  totalTileCount += width * height;
}

std::vector<DrawTask> DisplayList::invalidateTileCaches(const std::vector<Rect>& dirtyRegions) {
  if (dirtyRegions.empty()) {