#pragma once

#include "software_global.h"

#include "SoftwareCanvasRenderer.h"

#include <memory>

namespace paysages {
namespace software {

/**
 * Software rendering using only ray tracing, not rasterization.
 *
 * Follows these steps, for each view ray :
 *  - Find a ray intersection with solid matter
 *  - Texture/light the solid matter (may need other secondary rays)
 *  - Apply medium traversal along the ray (e.g. atmosphere)
 */
class SOFTWARESHARED_EXPORT SoftwareRayRenderer : public SoftwareCanvasRenderer {
  public:
    SoftwareRayRenderer(Scenery *scenery, bool standard = true);
    virtual ~SoftwareRayRenderer();

    /**
     * Register standard scenery intersectors.
     */
    void registerStandardIntersectors();

  protected:
    /**
     * Render a single canvas portion using ray-tracing.
     */
    virtual void renderPortion(CanvasPortion *portion, RenderProgress *progress, bool *interrupt);

    virtual void prepare() override;

  private:
    class pimpl;
    unique_ptr<pimpl> impl;
};
}
}