F:/My Projects/LSEngine/Modules/LSGraphicsLib/Src/OpenGLRenderQueue/LSGOpenGlRenderQueue.h

#ifndef __LSG_OPENGLRENDERQUEUE_H__
#define __LSG_OPENGLRENDERQUEUE_H__

#include "../LSGGraphicsLib.h"
#include "../RenderQueue/LSGRenderQueueBase.h"
#include "Search/LSSTDIndexSorter.h"

#ifdef LSG_OGL

namespace lsg {

        class COpenGlRenderQueue : public CRenderQueueBase {
        public :
                // == Functions.
                LSVOID LSE_CALL                                                 Sort();
                


                // == Functions.


        protected :
                // == Various constructors.
                LSE_CALLCTOR                                                    COpenGlRenderQueue();

                
                // == Types.
                typedef struct LSG_RENDER_QUEUE_ENTRY_EX : public LSG_RENDER_QUEUE_ENTRY {
                        // == Operators.
                        LSBOOL LSE_CALL                                         operator < ( const LSG_RENDER_QUEUE_ENTRY_EX &_rqieOther ) const;

                        LSBOOL LSE_CALL                                         operator == ( const LSG_RENDER_QUEUE_ENTRY_EX &_rqieOther ) const;
                } * LPLSG_RENDER_QUEUE_ENTRY_EX, * const LPCLSG_RENDER_QUEUE_ENTRY_EX;


                // == Members.
                CIndexSorter<LSG_RENDER_QUEUE_ENTRY_EX> m_isSorter;
        };


        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // DEFINITIONS
        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // == Operators.
        LSE_INLINE LSBOOL LSE_CALL COpenGlRenderQueue::LSG_RENDER_QUEUE_ENTRY_EX::operator < ( const LSG_RENDER_QUEUE_ENTRY_EX &_rqieOther ) const {
                if ( bAlpha ) {
                        // Larger distance wins.
                        if ( fDist > _rqieOther.fDist ) { return true; }
                        // If distances are equal, use the other data to check for an order.
                        if ( fDist < _rqieOther.fDist ) { return false; }
                }
                
                // For opaque or same-distance alpha objects, texture slots first.
                for ( LSUINT32 I = 0UL; I < LSG_MAX_TEXTURE_UNITS; ++I ) {
                        if ( prqiItem->ui32Textures[I] < _rqieOther.prqiItem->ui32Textures[I] ) { return true; }
                }
                // Then shader ID.
                if ( prqiItem->ui64ShaderId < _rqieOther.prqiItem->ui64ShaderId ) { return true; }
                // Distance last.
                if ( fDist < _rqieOther.fDist ) { return true; }
                return false;
        }

        LSE_INLINE LSBOOL LSE_CALL COpenGlRenderQueue::LSG_RENDER_QUEUE_ENTRY_EX::operator == ( const LSG_RENDER_QUEUE_ENTRY_EX &_rqieOther ) const {
                if ( fDist != _rqieOther.fDist ) { return false; }
                if ( prqiItem->ui64ShaderId != _rqieOther.prqiItem->ui64ShaderId ) { return false; }
                for ( LSUINT32 I = 0UL; I < LSG_MAX_TEXTURE_UNITS; ++I ) {
                        if ( prqiItem->ui32Textures[I] != _rqieOther.prqiItem->ui32Textures[I] ) { return false; }
                }
                return true;
        }

}       // namespace lsg

#endif  // #ifdef LSG_OGL

#endif  // __LSG_OPENGLRENDERQUEUE_H__