GLScalerFactory.cc

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#include "GLScalerFactory.hh"
#include "GLSimpleScaler.hh"
#include "GLRGBScaler.hh"
#include "GLSaIScaler.hh"
#include "GLScaleNxScaler.hh"
#include "GLTVScaler.hh"
#include "GLHQScaler.hh"
#include "GLHQLiteScaler.hh"
#include "RenderSettings.hh"
#include "EnumSetting.hh"
#include "memory.hh"
#include "unreachable.hh"

using std::unique_ptr;

namespace openmsx {
namespace GLScalerFactory {

unique_ptr<GLScaler> createScaler(RenderSettings& renderSettings)
{
        switch (renderSettings.getScaleAlgorithm().getValue()) {
        case RenderSettings::SCALER_SAI:
                // disabled for now:
                //   - it doesn't work (yet) on ATI cards
                //   - it probably has some bugs because (on nvidia cards)
                //     it does not give the same result as the SW SaI scaler,
                //     although it's reasonably close
                //return make_unique<GLSaIScaler>();
        case RenderSettings::SCALER_SIMPLE:
                return make_unique<GLSimpleScaler>(renderSettings);
        case RenderSettings::SCALER_RGBTRIPLET:
                return make_unique<GLRGBScaler>(renderSettings);
        case RenderSettings::SCALER_SCALE:
                return make_unique<GLScaleNxScaler>();
        case RenderSettings::SCALER_TV:
                return make_unique<GLTVScaler>(renderSettings);
        case RenderSettings::SCALER_HQ:
                return make_unique<GLHQScaler>();
        case RenderSettings::SCALER_MLAA: // fallback
        case RenderSettings::SCALER_HQLITE:
                return make_unique<GLHQLiteScaler>();
        default:
                UNREACHABLE;
        }
        return nullptr; // avoid warning
}

} // namespace GLScalerFactory
} // namespace openmsx