RenderQueue.h

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#ifndef B_RENDERQUEUE_H
#define B_RENDERQUEUE_H

#include <memory>
#include <map>

#include "Renderer_GL.h"
#include "Shader.h"
#include "Material.h"
#include "Properties.h"
#include "IDrawable.h"

struct RenderCall
{
    DrawablePtr drawable;
    std::string instanceName;
    GLenum blendSfactor, blendDfactor;
};

class RenderQueue : public IDrawable
{
public:
    /* Typedefs */
    typedef std::multimap< std::string, RenderCall> RenderCallsOpaque;
    typedef std::multimap< GLfloat, RenderCall> RenderCallsTransparent;

    /* Functions */

    RenderQueue(){}

    virtual ~RenderQueue(){}

    virtual void submitToRenderQueue(GLuint programID, const std::string &materialName, const std::string &drawableName, const std::string &instanceName, DrawablePtr drawable, GLfloat distanceToCamera = 0.0, bool isTransparent = false, GLenum blendSfactor = GL_SRC_ALPHA, GLenum blendDfactor = GL_ONE_MINUS_SRC_ALPHA);

    virtual void draw(GLenum mode = GL_TRIANGLES) override;

    virtual void drawInstance(const std::string &instanceName, GLenum mode) override { draw(mode); }

    virtual void clear();


private:

    /* Variables */
    
    RenderCallsOpaque           _renderCallsOpaque;
    RenderCallsTransparent      _renderCallsTransparent;

};

typedef std::shared_ptr<RenderQueue> RenderQueuePtr;

#endif /* defined(B_RENDERQUEUE_H) */