EnvironmentSystem.cpp

#include <algorithm>
#include "EnvironmentSystem.h"
#include "Resources/TextureManager.h"
 
namespace {
  using namespace Cogs::Core;
 
  void updateLod(unsigned& lods, TextureHandle tex)
  {
    if (tex) {
      if ((tex->description.flags & Cogs::TextureFlags::GenerateMipMaps) != 0) {
        lods = 1 + static_cast<uint32_t>(std::floor(std::log2((double)std::max(tex->description.width, tex->description.height))));
      }
      else {
        lods = tex->description.levels;
      }
    }
  }
 
 
}
 
void Cogs::Core::EnvironmentSystem::update(Context * /*context*/)
{
  for (auto & envComp : pool) {
    auto & envData = getData(&envComp);
 
    updateLod(envData.radianceLods, envComp.radiance);
    updateLod(envData.irradianceLods, envComp.irradiance);
    updateLod(envData.ambientIrradianceLods, envComp.ambientIrradiance);
  }
}