F:/My Projects/LSEngine/Modules/LSGraphicsLib/Src/IndexBuffer/LSGIndexBufferBase.h

#ifndef __LSG_INDEXBUFFERBASE_H__
#define __LSG_INDEXBUFFERBASE_H__

#include "../LSGGraphicsLib.h"
#include "../VertexBuffer/LSGVertexBuffer.h"
#include "Allocator/LSTLAllocator.h"
#include "Vector/LSTLVectorPoD.h"

namespace lsg {

#ifdef _DEBUG
#define LSG_IB_INTERFACE        virtual
#else   // #ifdef _DEBUG
#define LSG_IB_INTERFACE
#endif  // #ifdef _DEBUG

        // == Enumerations.
        enum LSG_INDEX_BUFFER_USAGE_TYPES {
                LSG_IBUT_SETONLY                                                                = (1 << 0),                                                             // Vertex data is never read or written to.
                LSG_IBUT_STANDARD                                                               = (1 << 1),                                                             // Vertex data is not read or written to often by the CPU.
                LSG_IBUT_DYNAMIC                                                                = (1 << 2),                                                             // Vertex data is updated frequently.

                LSG_IBUT_MASK                                                                   = (LSG_IBUT_SETONLY | LSG_IBUT_STANDARD | LSG_IBUT_DYNAMIC),
                LSG_IBUT_FORCE_DWORD                                                    = 0x7FFFFFFF
        };


        class CIndexBufferBase {
        public :
                // == Various constructors.
                LSE_CALLCTOR                                                                    CIndexBufferBase();
                LSE_CALLCTOR                                                                    ~CIndexBufferBase();


        protected :
                // == Members.
                CVectorPoD<LSUINT8, LSUINT32>                                   m_vBuffer;

                LSUINT32                                                                                m_ui32ElementSize;

                LSUINT32                                                                                m_ui32Usage;

                LSUINT32                                                                                m_ui32LockCount;

                LSUINT32                                                                                m_ui32AddedPrimitives;

                LSUINT32                                                                                m_ui32TotalIndices;

                LSBOOL                                                                                  m_bFinalized;

#ifdef _DEBUG
                // == Functions.
                LSG_IB_INTERFACE LSVOID LSE_CALL                                InitApi( CAllocator * _paAllocator ) = 0;

                LSG_IB_INTERFACE LSBOOL LSE_CALL                                CreateApiIndexBuffer() = 0;

                LSG_IB_INTERFACE LSVOID LSE_CALL                                ResetApi() = 0;

                LSG_IB_INTERFACE LSVOID LSE_CALL                                RenderApi( const CVertexBuffer &_vbBuffer, LSUINT32 _ui32TotalPrimitives ) const = 0;
                
                LSG_IB_INTERFACE LSVOID LSE_CALL                                SetApiStripType( LSG_VERTEX_BUFFER_PRIMITIVES _vbpType ) = 0;

#endif  // #ifdef _DEBUG
        };

}       // namespace lsg

#endif  // __LSG_INDEXBUFFERBASE_H__