/*
* Copyright (c) 2021, Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#if (defined BUFFER_0) || (defined BUFFER_1) || (defined BUFFER_2) || (defined BUFFER_3)
vector <ushort, 16> LoadMaskTemp = (TempMask0.select<1, 1, 16, 1>(0, 0) != 0);
#elif (defined BUFFER_4) || (defined BUFFER_5)
uchar sec_half_shift = (Layer_Index >> 7) * 8;
vector <ushort, 16> LoadMaskTemp = (TempMask.select<16, 1>(0) != 0);
#endif

#if defined BUFFER_0
Buffer_Index = 0;
CalculationMask = cm_pack_mask(LoadMaskTemp) & 0x000F;
#elif defined BUFFER_1
Buffer_Index = 1;
CalculationMask = (cm_pack_mask(LoadMaskTemp) >> 4) & 0x000F;
#elif defined BUFFER_2
Buffer_Index = 2;
CalculationMask = (cm_pack_mask(LoadMaskTemp) >> 8) & 0x000F;
#elif defined BUFFER_3
Buffer_Index = 3;
CalculationMask = (cm_pack_mask(LoadMaskTemp) >> 12) & 0x000F;
#elif defined BUFFER_4
CalculationMask = (cm_pack_mask(LoadMaskTemp) >> sec_half_shift) & 0x000F;
Buffer_Index = 4;
#elif defined BUFFER_5
CalculationMask = (cm_pack_mask(LoadMaskTemp) >> (4 + sec_half_shift)) & 0x000F;
Buffer_Index = 5;
#endif

if (CalculationMask != 0)
{
    // AVS Y
    {
        float StartX;
        float StartY;
        float DeltaX;
        float DeltaY;
        uint Vertical_Block_Num;
        uchar Layer_Index_45;
        uchar RotationFlag;
        bool IefBypass = true;
        int TempOffset;
        SamplerIndex Src_Sampler(MDF_FC_AVS_SI_Y);
        matrix<ushort, 4, 16> sampler_temp;

        /*
        AVS Sampler 16x4 write back buffer layout for R/V, G/Y, B/U channel, each box stands for 8x1 ushort write back pixel
        16x4 pixle deviding to 8 8x1 pixel block
        _________________________________________________
        |_______Block0__________|_______Block1__________|
        |_______Block2__________|_______Block3__________|
        |_______Block4__________|_______Block5__________|
        |_______Block6__________|_______Block7__________|

        Write back buffer layout correlate to the block number#, each box stands for 1 GRF
        _______________________________________________
        |____R0_________R2_____|____R4_________R6_____|
        |____G0_________G2_____|____G4_________G6_____|
        |____B0_________B2_____|____B4_________B6_____|
        |____A0_________A2_____|____A4_________A6_____|
        |____R1_________R3_____|____R5_________R7_____|
        |____G1_________G3_____|____G5_________G7_____|
        |____B1_________B3_____|____B5_________B7_____|
        |____A1_________A3_____|____A5_________A7_____|
        */

#ifdef BUFFER_0
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + DstY * DeltaX;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + DstX * DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }

#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = (((Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12) >> 2)) & 15;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX += DstX * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }

        TempOffset = Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12;
        TempOffset &= 0xFFFFFFC3;
        StartY = StartY + TempOffset * DeltaY;
#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12) * DeltaX;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
    }

#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = (DstY >> 2) & 15;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }

        StartY = StartY + (DstY & 0xFFC3) * DeltaY;
#endif
#endif

#ifdef BUFFER_1
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + (DstY + 4) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + DstX * DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }

#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = (((Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8) >> 2)) & 15;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX += DstX * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }

        TempOffset = Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8;
        TempOffset &= 0xFFFFFFC3;
        StartY = StartY + TempOffset * DeltaY;
#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }

#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = ((DstY >> 2) & 15) + 1;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        StartY = StartY + (DstY & 0xFFC3) * DeltaY;
#endif
#endif

#ifdef BUFFER_2
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + (DstY + 8) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + DstX * DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }

#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = (((Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 4) >> 2)) & 15;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX += DstX * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }

        TempOffset = Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 4;
        TempOffset &= 0xFFFFFFC3;
        StartY = StartY + TempOffset * DeltaY;
#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 4) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }
#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = ((DstY >> 2) & 15) + 2;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        StartY = StartY + (DstY & 0xFFC3) * DeltaY;
#endif
#endif

#ifdef BUFFER_3
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + (DstY + 12) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + DstX * DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }

#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = ((Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY) >> 2) & 15;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX += DstX * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }

        TempOffset = Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY;
        TempOffset &= 0xFFFFFFC3;
        StartY = StartY + TempOffset * DeltaY;
#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = 0;

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }
#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        Vertical_Block_Num = ((DstY >> 2) & 15) + 3;

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        StartY = StartY + (DstY & 0xFFC3) * DeltaY;
#endif
#endif

#ifdef BUFFER_4
#ifdef ROTATE_90
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = 0;

        StartX = StartX + (DstY + 8 * (Layer_Index >> 7)) * DeltaX;
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + DstX * DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }

#elif defined ROTATE_180
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = ((Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12 - 8 * (Layer_Index >> 7)) >> 2) & 15;

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX += DstX * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }

        TempOffset = Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12 - 8 * (Layer_Index >> 7);
        TempOffset &= 0xFFFFFFC3;
        StartY = StartY + TempOffset * DeltaY;
#elif defined ROTATE_270
        Layer_Index_45 = Layer_Index & 0x7f;

        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = 0;

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12 - 8 * (Layer_Index >> 7)) * DeltaX;
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }
#else
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = ((DstY >> 2) & 15) + (2 * (Layer_Index >> 7));

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        StartY = StartY + (DstY & 0xFFC3) * DeltaY;
#endif
#endif

#ifdef BUFFER_5
#ifdef ROTATE_90
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = 0;

        StartX = StartX + (DstY + 8 * (Layer_Index >> 7) + 4) * DeltaX;
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + DstX * DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }

#elif defined ROTATE_180
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = (((Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8 - 8 * (Layer_Index >> 7)) >> 2)) & 15;

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX += DstX * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        TempOffset = Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8 - 8 * (Layer_Index >> 7);
        TempOffset &= 0xFFFFFFC3;
        StartY = StartY + TempOffset * DeltaY;
#elif defined ROTATE_270
        Layer_Index_45 = Layer_Index & 0x7f;

        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = 0;

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8 - (8 * (Layer_Index >> 7))) * DeltaX;
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }
#else
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        Vertical_Block_Num = ((DstY >> 2) & 15) + (2 * (Layer_Index >> 7)) + 1;

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        StartY = StartY + (DstY & 0xFFC3) * DeltaY;
#endif
#endif


#ifdef BUFFER_0
#define WriteBackBuffer DataBuffer0
        SurfaceIndex Src_Surface(MDF_FC_INPUT_BTI_START);
        cm_avs_sampler(
            sampler_temp,
            CM_R_ENABLE,
            Src_Surface,
            Src_Sampler,
            StartX,
            StartY,
            DeltaX,
            DeltaY,
            0,
            0,
            Vertical_Block_Num,
            CM_16_FULL,
            0,
            CM_AVS_16x4,
            IefBypass);

#endif
#ifdef BUFFER_1
#define WriteBackBuffer DataBuffer1
        SurfaceIndex Src_Surface(MDF_FC_INPUT_BTI_START);
        cm_avs_sampler(
            sampler_temp,
            CM_R_ENABLE,
            Src_Surface,
            Src_Sampler,
            StartX,
            StartY,
            DeltaX,
            DeltaY,
            0,
            0,
            Vertical_Block_Num,
            CM_16_FULL,
            0,
            CM_AVS_16x4,
            IefBypass);

#endif
#ifdef BUFFER_2
#define WriteBackBuffer DataBuffer2
        SurfaceIndex Src_Surface(MDF_FC_INPUT_BTI_START);
        cm_avs_sampler(
            sampler_temp,
            CM_R_ENABLE,
            Src_Surface,
            Src_Sampler,
            StartX,
            StartY,
            DeltaX,
            DeltaY,
            0,
            0,
            Vertical_Block_Num,
            CM_16_FULL,
            0,
            CM_AVS_16x4,
            IefBypass);

#endif
#ifdef BUFFER_3
#define WriteBackBuffer DataBuffer3
        SurfaceIndex Src_Surface(MDF_FC_INPUT_BTI_START);
        cm_avs_sampler(
            sampler_temp,
            CM_R_ENABLE,
            Src_Surface,
            Src_Sampler,
            StartX,
            StartY,
            DeltaX,
            DeltaY,
            0,
            0,
            Vertical_Block_Num,
            CM_16_FULL,
            0,
            CM_AVS_16x4,
            IefBypass);

#endif
#ifdef BUFFER_4
#define WriteBackBuffer DataBuffer4
        SurfaceIndex Src_Surface(MDF_FC_INPUT_BTI_START + MDF_FC_INPUT_BTI_PER_LAYER * Layer_Index_45);

        cm_avs_sampler(
            sampler_temp,
            CM_R_ENABLE,
            Src_Surface,
            Src_Sampler,
            StartX,
            StartY,
            DeltaX,
            DeltaY,
            0,
            0,
            Vertical_Block_Num,
            CM_16_FULL,
            0,
            CM_AVS_16x4,
            IefBypass);

#endif
#ifdef BUFFER_5
#define WriteBackBuffer DataBuffer5
        SurfaceIndex Src_Surface(MDF_FC_INPUT_BTI_START + MDF_FC_INPUT_BTI_PER_LAYER * Layer_Index_45);

        cm_avs_sampler(
            sampler_temp,
            CM_R_ENABLE,
            Src_Surface,
            Src_Sampler,
            StartX,
            StartY,
            DeltaX,
            DeltaY,
            0,
            0,
            Vertical_Block_Num,
            CM_16_FULL,
            0,
            CM_AVS_16x4,
            IefBypass);

#endif

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(2, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(10, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
    }

    // sampler unorm uv
    {
        float StartX;
        float StartY;
        float StartX1;
        float StartY1;
        float DeltaX;
        float DeltaY;
        uchar RotationFlag;
        matrix<ushort, 4, 16> sampler_temp;

        /*
        AVS Sampler 16x4 write back buffer layout for R/V, G/Y, B/U channel, each box stands for 8x1 ushort write back pixel
        16x4 pixle deviding to 8 8x1 pixel block
        _________________________________________________
        |_______Block0__________|_______Block1__________|
        |_______Block2__________|_______Block3__________|
        |_______Block4__________|_______Block5__________|
        |_______Block6__________|_______Block7__________|

        Write back buffer layout correlate to the block number#, each box stands for 1 GRF
        _______________________________________________
        |____R0_________R2_____|____R4_________R6_____|
        |____G0_________G2_____|____G4_________G6_____|
        |____B0_________B2_____|____B4_________B6_____|
        |____A0_________A2_____|____A4_________A6_____|
        |____R1_________R3_____|____R5_________R7_____|
        |____G1_________G3_____|____G5_________G7_____|
        |____B1_________B3_____|____B5_________B7_____|
        |____A1_________A3_____|____A5_________A7_____|
        */
        matrix <float, 2, 8> mesg;
        mesg.select<1, 1, 8, 1>(0, 0).format<uint>() = cm_get_r0<uint>();
        mesg.select<1, 1, 8, 1>(1, 0).format<uint>() = cm_get_r0<uint>();
        uint desc_y;
        uchar Layer_Index_45;

#ifdef BUFFER_0
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        StartX = StartX + DstY * DeltaX;

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + (DstX + MDF_FC_SAMPLER_UNORM_WIDTH)* DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaY;
        }

        StartY1 = StartY - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;

        //StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;

        StartX1 = StartX;
#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX = StartX + DeltaX * (MDF_FC_SAMPLER_UNORM_WIDTH + DstX);
            StartX1 = StartX - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaX;
            StartX1 = StartX - DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        }

        //StartX = StartX + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        StartY = StartY + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12) * DeltaY;

        StartY1 = StartY;
#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12) * DeltaX;
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }

        StartY1 = StartY + MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;
        //StartY = StartY + DstX * DeltaY;
        StartX1 = StartX;
#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }

        StartX1 = StartX + MDF_FC_SAMPLER_UNORM_WIDTH * DeltaX;

        StartY += DstY * DeltaY;
        StartY1 = StartY;
#endif
#endif

#ifdef BUFFER_1
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        StartX = StartX + (DstY + 4) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + (DstX + MDF_FC_SAMPLER_UNORM_WIDTH)* DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaY;
        }

        //StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;

#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX = StartX + DeltaX * (MDF_FC_SAMPLER_UNORM_WIDTH + DstX);
            StartX1 = StartX - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaX;
            StartX1 = StartX - DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        }

        //StartX = StartX + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        StartY = StartY + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8) * DeltaY;

        //StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;

#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8) * DeltaX;

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }

        //StartY = StartY + DstX * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY + MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;
#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        //StartX += DstX * DeltaX;
        StartY += (DstY + MDF_FC_SAMPLER_UNORM_HEIGHT)* DeltaY;

        StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#endif
#endif

#ifdef BUFFER_2
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        StartX = StartX + (DstY + 8) * DeltaX;
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + (DstX + MDF_FC_SAMPLER_UNORM_WIDTH)* DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaY;
        }

        //StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;

#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX = StartX + DeltaX * (MDF_FC_SAMPLER_UNORM_WIDTH + DstX);
            StartX1 = StartX - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaX;
            StartX1 = StartX - DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        }

        //StartX = StartX + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        StartY = StartY + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 4) * DeltaY;

        //StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 4) * DeltaX;
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }

        //StartY = StartY + DstX * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY + MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;
#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);
        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        //StartX += DstX * DeltaX;
        StartY += (DstY + 2 * MDF_FC_SAMPLER_UNORM_HEIGHT)* DeltaY;
        StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#endif
#endif

#ifdef BUFFER_3
#ifdef ROTATE_90
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        StartX = StartX + (DstY + 12) * DeltaX;

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + (DstX + MDF_FC_SAMPLER_UNORM_WIDTH)* DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaY;
        }

        //StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;

#elif defined ROTATE_180
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX = StartX + DeltaX * (MDF_FC_SAMPLER_UNORM_WIDTH + DstX);
            StartX1 = StartX - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaX;
            StartX1 = StartX - DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        }
        //StartX = StartX + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        StartY = StartY + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY) * DeltaY;

        //StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#elif defined ROTATE_270
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY) * DeltaX;
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }

        //StartY = StartY + DstX * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY + MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;
#else
        StartX = Start_X(0);
        StartY = Start_Y(0);
        DeltaX = Delta_X(0);
        DeltaY = Delta_Y(0);

        RotationFlag = (uchar)(RotationChromaSitingFlag & 0x07);

        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        //StartX += DstX * DeltaX;
        StartY += (DstY + 3 * MDF_FC_SAMPLER_UNORM_HEIGHT)* DeltaY;
        StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#endif
#endif

#ifdef BUFFER_4
#ifdef ROTATE_90
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);

        StartX = StartX + (DstY + 8 * (Layer_Index >> 7)) * DeltaX;
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + (DstX + MDF_FC_SAMPLER_UNORM_WIDTH)* DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaY;
        }

        //StartY = StartY + (Dst_Width - MDF_FC_BLOCK_HEIGHT - DstX) * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;

#elif defined ROTATE_180
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX = StartX + DeltaX * (MDF_FC_SAMPLER_UNORM_WIDTH + DstX);
            StartX1 = StartX - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaX;
            StartX1 = StartX - DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        }

        //StartX = StartX + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        StartY = StartY + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12 - 8 * (Layer_Index >> 7)) * DeltaY;

        //StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#elif defined ROTATE_270
        Layer_Index_45 = Layer_Index & 0x7f;

        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 12 - 8 * (Layer_Index >> 7)) * DeltaX;
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }
        //StartY = StartY + DstX * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY + MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;
#else
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }

        //StartX += DstX * DeltaX;
        StartY = StartY + (DstY + 2 * (Layer_Index >> 7) * MDF_FC_SAMPLER_UNORM_HEIGHT) * DeltaY;
        StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#endif
#endif

#ifdef BUFFER_5
#ifdef ROTATE_90
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);

        StartX = StartX + (DstY + 8 * (Layer_Index >> 7) + 4) * DeltaX;
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_HORIZONTAL)
        {
            StartY = StartY + (DstX + MDF_FC_SAMPLER_UNORM_WIDTH)* DeltaY;
        }
        else
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaY;
        }

        //StartY = StartY + (Dst_Width - MDF_FC_BLOCK_HEIGHT - DstX) * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;

#elif defined ROTATE_180
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_VERTICAL)
        {
            StartX = StartX + DeltaX * (MDF_FC_SAMPLER_UNORM_WIDTH + DstX);
            StartX1 = StartX - MDF_FC_SAMPLER_UNORM_WIDTH * DeltaX;
        }
        else
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX + MDF_FC_SAMPLER_UNORM_WIDTH) * DeltaX;
            StartX1 = StartX - DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        }

        //StartX = StartX + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        StartY = StartY + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8 - 8 * (Layer_Index >> 7)) * DeltaY;

        //StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#elif defined ROTATE_270
        Layer_Index_45 = Layer_Index & 0x7f;

        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);

        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);

        StartX = StartX + (Dst_Height - MDF_FC_BLOCK_HEIGHT - DstY + 8 - 8 * (Layer_Index >> 7)) * DeltaX;
        if (RotationFlag == MDF_FC_ROTATE_90_MIRROR_VERTICAL)
        {
            StartY = StartY + (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaY;
        }
        else
        {
            StartY = StartY + DstX * DeltaY;
        }
        //StartY = StartY + DstX * DeltaY;

        StartX1 = StartX;
        StartY1 = StartY + MDF_FC_SAMPLER_UNORM_WIDTH * DeltaY;
#else
        Layer_Index_45 = Layer_Index & 0x7f;
        StartX = Start_X(Layer_Index_45);
        StartY = Start_Y(Layer_Index_45);
        DeltaX = Delta_X(Layer_Index_45);
        DeltaY = Delta_Y(Layer_Index_45);
        RotationFlag = (uchar)((RotationChromaSitingFlag >> (3 * Layer_Index_45)) & 0x07);
        if (RotationFlag == MDF_FC_MIRROR_HORIZONTAL)
        {
            StartX += (Dst_Width - MDF_FC_BLOCK_WIDTH - DstX) * DeltaX;
        }
        else
        {
            StartX += DstX * DeltaX;
        }
        //StartX += DstX * DeltaX;
        StartY = StartY + (DstY + (2 * (Layer_Index >> 7) + 1) * MDF_FC_SAMPLER_UNORM_HEIGHT) * DeltaY;
        StartX1 = StartX + DeltaX * MDF_FC_SAMPLER_UNORM_WIDTH;
        StartY1 = StartY;
#endif
#endif
        // GA channel
        mesg.format<uint, 2, 8>().select<1, 1, 1, 1>(0, 2) = nSMPL_UNORM_ALPHA_GREEN_CHANNEL_444_16;

#ifdef BUFFER_0
#define WriteBackBuffer DataBuffer0
        mesg.select<1, 1, 1, 1>(1, 2) = StartX;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;

        desc_y = nSMPL_UNORM_444_16BITS_MSGDSC_2CH + (MDF_FC_3D_SAMPLER_SI_Y << 8) + MDF_FC_INPUT_BTI_START + MDF_FC_UV_PLANE_BTI_OFFSET;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(0, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(4, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

        mesg.select<1, 1, 1, 1>(1, 2) = StartX1;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY1;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;

        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(8, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(12, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

#endif
#ifdef BUFFER_1
#define WriteBackBuffer DataBuffer1
        mesg.select<1, 1, 1, 1>(1, 2) = StartX;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;

        desc_y = nSMPL_UNORM_444_16BITS_MSGDSC_2CH + (MDF_FC_3D_SAMPLER_SI_Y << 8) + MDF_FC_INPUT_BTI_START + MDF_FC_UV_PLANE_BTI_OFFSET;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(0, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(4, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

        mesg.select<1, 1, 1, 1>(1, 2) = StartX1;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY1;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(8, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(12, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

#endif
#ifdef BUFFER_2
#define WriteBackBuffer DataBuffer2
        mesg.select<1, 1, 1, 1>(1, 2) = StartX;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;

        desc_y = nSMPL_UNORM_444_16BITS_MSGDSC_2CH + (MDF_FC_3D_SAMPLER_SI_Y << 8) + MDF_FC_INPUT_BTI_START + MDF_FC_UV_PLANE_BTI_OFFSET;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(0, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(4, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

        mesg.select<1, 1, 1, 1>(1, 2) = StartX1;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY1;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(8, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(12, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

#endif
#ifdef BUFFER_3
#define WriteBackBuffer DataBuffer3
        mesg.select<1, 1, 1, 1>(1, 2) = StartX;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;

        desc_y = nSMPL_UNORM_444_16BITS_MSGDSC_2CH + (MDF_FC_3D_SAMPLER_SI_Y << 8) + MDF_FC_INPUT_BTI_START + MDF_FC_UV_PLANE_BTI_OFFSET;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(0, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(4, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

        mesg.select<1, 1, 1, 1>(1, 2) = StartX1;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY1;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(8, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(12, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

#endif
#ifdef BUFFER_4
#define WriteBackBuffer DataBuffer4
        mesg.select<1, 1, 1, 1>(1, 2) = StartX;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;

        desc_y = nSMPL_UNORM_444_16BITS_MSGDSC_2CH + (MDF_FC_3D_SAMPLER_SI_Y << 8) + MDF_FC_INPUT_BTI_START + MDF_FC_INPUT_BTI_PER_LAYER * Layer_Index_45 + MDF_FC_UV_PLANE_BTI_OFFSET;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(0, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(4, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

        mesg.select<1, 1, 1, 1>(1, 2) = StartX1;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY1;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(8, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(12, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);;

#endif
#ifdef BUFFER_5
#define WriteBackBuffer DataBuffer5
        mesg.select<1, 1, 1, 1>(1, 2) = StartX;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;

        desc_y = nSMPL_UNORM_444_16BITS_MSGDSC_2CH + (MDF_FC_3D_SAMPLER_SI_Y << 8) + MDF_FC_INPUT_BTI_START + MDF_FC_INPUT_BTI_PER_LAYER * Layer_Index_45 + MDF_FC_UV_PLANE_BTI_OFFSET;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(0, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(4, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

        mesg.select<1, 1, 1, 1>(1, 2) = StartX1;
        mesg.select<1, 1, 1, 1>(1, 3) = StartY1;
        mesg.select<1, 1, 1, 1>(1, 4) = DeltaX;
        mesg.select<1, 1, 1, 1>(1, 5) = DeltaY;
        cm_send(sampler_temp,
            mesg.format<ushort, 2, 16>(),
            nSMPL_ENGINE,
            desc_y,
            0);

        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(8, 0) = sampler_temp.select<2, 1, 16, 1>(2, 0);
        WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(12, 0) = sampler_temp.select<2, 1, 16, 1>(0, 0);

#endif
    }

    WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(6, 0) = 0xffff;
    WriteBackBuffer.format<ushort, 16, 16>().select<2, 1, 16, 1>(14, 0) = 0xffff;

    // Shuffle the write back of sampler
    /*
    Buffer layout after shuffle
    _________________________________________________
    |_______Block0__________|_______Block1__________|
    |_______Block2__________|_______Block3__________|
    |_______Block4__________|_______Block5__________|
    |_______Block6__________|_______Block7__________|

    Write back buffer layout correlate to the block number#, each box stands for 1 GRF
    _______________________________________________
    |____R0_________R1_____|____R2_________R3_____|
    |____G0_________G1_____|____G2_________G3_____|
    |____B0_________B1_____|____B2_________B3_____|
    |____A0_________A1_____|____A2_________A3_____|
    |____R4_________R5_____|____R6_________R7_____|
    |____G4_________G5_____|____G6_________G7_____|
    |____B4_________B5_____|____B6_________B7_____|
    |____A4_________A5_____|____A6_________A7_____|
    */

#undef WriteBackBuffer
}