F:/My Projects/LSEngine/Modules/LSGraphicsLib/Src/DirectX/LSGDirectX9VertexBuffer.h

#ifndef __LSG_DIRECTX9VERTEXBUFFER_H__
#define __LSG_DIRECTX9VERTEXBUFFER_H__

#include "../LSGGraphicsLib.h"

#ifdef LSG_DX9

#include "../DirectX/LSGDirectX9LosableResource.h"
#include "../VertexBuffer/LSGVertexBufferBase.h"
#include "CriticalSection/LSHCriticalSection.h"
#include "Vector/LSTLVectorPoD.h"

namespace lsg {

        class CDirectX9VertexBuffer : public CVertexBufferBase, public CDirectX9LosableResource {
        public :
                // == Various constructors.
                LSE_CALLCTOR                                                                    CDirectX9VertexBuffer();
                LSE_CALLCTOR                                                                    ~CDirectX9VertexBuffer();


                // == Functions.
                LSE_INLINE D3DPRIMITIVETYPE LSE_CALL                    GetDirectX9PrimitiveType() const;

                virtual LSVOID LSE_CALL                                                 OnDeviceLost();

                virtual LSBOOL LSE_CALL                                                 OnDeviceReset();

        protected :
                // == Types.
                typedef struct LSG_DIRECTX9_PREFINED_VERT_ATT {
                        LSUINT32                                                                        ui32Mask;

                        LSUINT32                                                                        ui32Size;
                } * LPLSG_DIRECTX9_PREFINED_VERT_ATT, * const LPCLSG_DIRECTX9_PREFINED_VERT_ATT;

                typedef struct LSG_DIRECTX9_LAST_VERT_DECLS {
                        LSUINT32                                                                        ui32StreamIds[LSG_VBM_MAX_STREAMS];

                        IDirect3DVertexDeclaration9 *                           pvdVertexDeclaration;


                        // == Various constructors.
                        LSE_CALLCTOR                                                            LSG_DIRECTX9_LAST_VERT_DECLS();
                        LSE_CALLCTOR                                                            ~LSG_DIRECTX9_LAST_VERT_DECLS();
                } * LPLSG_DIRECTX9_LAST_VERT_DECLS, * const LPCLSG_DIRECTX9_LAST_VERT_DECLS;


                // == Members.
                IDirect3DVertexBuffer9 *                                                m_pvbVertexBuffer;

                D3DVERTEXELEMENT9 *                                                             m_pvdVertexDeclaration;

                CVectorPoD<LSG_DIRECTX9_LAST_VERT_DECLS, LSUINT8, 1UL>
                                                                                                                m_vVertDeclRecord;

                LSUINT32                                                                                m_ui32VertexDeclStream;

                LSUINT32                                                                                m_ui32VertexDeclLength;

                D3DPRIMITIVETYPE                                                                m_ptPrimitiveType;

                LSBOOL                                                                                  m_bFakeAlpha[LSG_VBM_MAX_USAGES];

                static LSG_DIRECTX9_PREFINED_VERT_ATT                   m_dpvaVertices[];

                static CCriticalSection                                                 m_csCrit;


                // == Functions.
                LSBOOL LSE_CALL                                                                 CreateApiVertexBuffer();

                LSVOID LSE_CALL                                                                 ResetApi( LSBOOL _bFull = true );

                LSVOID LSE_CALL                                                                 UnLockApi();
                
                LSVOID LSE_CALL                                                                 AdjustInputsToApi( LSG_VB_CONTENTS &_vcContents, LSUINT16 &_ui16UsageAndAccess );

                LSUINT32 LSE_CALL                                                               GetVertexAttributeSizeApi( const LSG_VB_CONTENTS &_vcContents );

                LSBOOL LSE_CALL                                                                 SetStreamApi( LSUINT32 _ui32Stream, LSUINT32 _ui32Offset, LSUINT32 _ui32ElementsSize );

                LSBOOL LSE_CALL                                                                 CanBufferBeDestroyedApi( LSUINT32 _ui32Elements, LSUINT32 _ui32ElementsSize, LSUINT32 _ui32UsageAndAccess );

                LSUINT32 LSE_CALL                                                               RawColorToApiColor( LSREAL _fR, LSREAL _fG, LSREAL _fB, LSVOID * _pvBuffer );

                LSUINT32 LSE_CALL                                                               RawColorToApiColor( LSREAL _fR, LSREAL _fG, LSREAL _fB, LSREAL _fA, LSVOID * _pvBuffer );

                LSVOID LSE_CALL                                                                 SetColorApi( LSREAL _fR, LSREAL _fG, LSREAL _fB, LSVOID * _pvBuffer );

                LSVOID LSE_CALL                                                                 SetAlphaApi( LSREAL _fA, LSVOID * _pvBuffer );

                LSVOID LSE_CALL                                                                 PrepareToRenderApi();

                LSVOID LSE_CALL                                                                 EndRenderApi();

                LSVOID LSE_CALL                                                                 RenderApi( LSUINT32 _ui32TotalPrimitives );

                LSUINT32 LSE_CALL                                                               BestStrideApi( LSUINT32 _ui32Size );

        private :
                LSBOOL LSE_CALL                                                                 GenerateVertexDeclaration( const LSG_VB_CONTENTS &_vcContents );
        };


        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // DEFINITIONS
        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // == Functions.
        LSE_INLINE D3DPRIMITIVETYPE LSE_CALL CDirectX9VertexBuffer::GetDirectX9PrimitiveType() const {
                return m_ptPrimitiveType;
        }

        LSE_INLINE LSUINT32 LSE_CALL CDirectX9VertexBuffer::RawColorToApiColor( LSREAL _fR, LSREAL _fG, LSREAL _fB, LSVOID * _pvBuffer ) {
                LSUINT32 * pui32Dest = static_cast<LSUINT32 *>(_pvBuffer);
                // 0xAARRGGBB.
                (*pui32Dest) = 0xFF |                                                                                                                                                                                   // Alpha.
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fR, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 16) |       // Red.
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fG, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 8) |        // Green.
                        static_cast<LSUINT32>((CMathLib::Clamp( _fB, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0)));                        // Blue.
                return sizeof( LSUINT32 );
        }

        LSE_INLINE LSUINT32 LSE_CALL CDirectX9VertexBuffer::RawColorToApiColor( LSREAL _fR, LSREAL _fG, LSREAL _fB, LSREAL _fA, LSVOID * _pvBuffer ) {
                LSUINT32 * pui32Dest = static_cast<LSUINT32 *>(_pvBuffer);
                // 0xAARRGGBB.
                (*pui32Dest) =
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fA, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 24) |       // Alpha.
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fR, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 16) |       // Red.
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fG, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 8) |        // Green.
                        static_cast<LSUINT32>((CMathLib::Clamp( _fB, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0)));                        // Blue.
                return sizeof( LSUINT32 );
        }

        LSE_INLINE LSVOID LSE_CALL CDirectX9VertexBuffer::SetColorApi( LSREAL _fR, LSREAL _fG, LSREAL _fB, LSVOID * _pvBuffer ) {
                LSUINT32 * pui32Dest = static_cast<LSUINT32 *>(_pvBuffer);
                LSUINT32 ui32Temp = 
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fR, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 16) |       // Red.
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fG, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 8) |        // Green.
                        static_cast<LSUINT32>((CMathLib::Clamp( _fB, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0)));                        // Blue.
                ui32Temp |= (*pui32Dest) & 0xFF000000;  // Keep the existing alpha.
                (*pui32Dest) = ui32Temp;
        }

        LSE_INLINE LSVOID LSE_CALL CDirectX9VertexBuffer::SetAlphaApi( LSREAL _fA, LSVOID * _pvBuffer ) {
                LSUINT32 * pui32Dest = static_cast<LSUINT32 *>(_pvBuffer);
                LSUINT32 ui32Temp = 
                        (static_cast<LSUINT32>((CMathLib::Clamp( _fA, LSM_ZERO, LSM_ONE ) * static_cast<LSREAL>(255.0))) << 24);        // Alpha.
                ui32Temp |= (*pui32Dest) & 0x00FFFFFF;  // Keep the existing color.
                (*pui32Dest) = ui32Temp;
        }

}       // namespace lsg

#endif  // #ifdef LSG_DX9

#endif  // __LSG_DIRECTX9VERTEXBUFFER_H__