ATI Sample Display Driver Optimization

Artigo
08/12/2009

Windows Mobile Not Supported Windows Embedded CE Supported

9/8/2008

O driver ATI exemplo possui um emitir desempenho com vídeo memória para vídeo memória bloco bit transfere que também usar TRANPARENCY.

O seguinte mostra exemplo de código como resolver essa emitir usando este codificar para substituir o ATI::AcceleratedSrcCopyBlt função no Diretório de %_WINCEROOT%\Public\Common\OAK\Drivers\Display\ATI.

SCODE
ATI::AcceleratedSrcCopyBlt (GPEBltParms *pBltParms)
{
   DWORD  DstCntl = DST_Y_TOP_TO_BOTTOM | DST_X_LEFT_TO_RIGHT;
   int    srcX = pBltParms->prclSrc->left + ((ATISurf *) (pBltParms->pSrc))->Left(); // left of source rect
   int    srcY = pBltParms->prclSrc->top + ((ATISurf *) (pBltParms->pSrc))->Top();   // top of source rect
   int    dstX = pBltParms->prclDst->left + ((ATISurf *) (pBltParms->pDst))->Left(); // left of dest rect
   int    dstY = pBltParms->prclDst->top + ((ATISurf *) (pBltParms->pDst))->Top();   // top of dest rect
   int    width = pBltParms->prclDst->right  - pBltParms->prclDst->left;             // Rectangle Width Data Store
   int    height = pBltParms->prclDst->bottom - pBltParms->prclDst->top;             // Rectangle Height Data Store

   RETAILMSG (ATI_FUNCTION_MSGS, (TEXT("ATI::AcceleratedSrcCopyBlt()\r\n")));
 
   // check for negative x or y direction and correct values accordingly

   if (!pBltParms->xPositive)
   {
          srcX += (width - 1);
          dstX += (width - 1);
          DstCntl &= ~DST_X_LEFT_TO_RIGHT;
   }
 
   if (!pBltParms->yPositive)
   {
          srcY += (height - 1);
          dstY += (height - 1);
          DstCntl &= ~DST_Y_TOP_TO_BOTTOM;
   }
 
   WaitForFIFO(10);           // wait for max number of possibly used registers to be available
 
   if (pBltParms->bltFlags & BLT_TRANSPARENT)
   {
          _memwD_reg (CLR_CMP_CNTL, COMPARE_SOURCE | COMPARE_EQUAL);    // turn on transparency
          _memwD_reg (CLR_CMP_CLR, pBltParms->solidColor);              // set comparison color
   }
 
   switch (pBltParms->rop4)
   {
          case   0x6666:       // SRCINVERT
                 _memwD_reg (DP_MIX, FRGD_MIX_D_XOR_S | BKGD_MIX_D);
                 break;
 
          case   0x8888:       // SRCAND
                 _memwD_reg (DP_MIX, FRGD_MIX_D_AND_S | BKGD_MIX_D);
                 break;
 
          default:

          case   0xCCCC:       // SRCCOPY
                 _memwD_reg (DP_MIX, FRGD_MIX_S | BKGD_MIX_D);
                 break;
 
          case   0xEEEE:       // SRCPAINT
                 _memwD_reg (DP_MIX, FRGD_MIX_D_OR_S | BKGD_MIX_D);
                 break;
   }
 
   _memwD_reg (DP_SRC, FRGD_SRC_BLIT);
   _memwD_reg (SRC_Y_X, (srcX << 16) | srcY);
   _memwD_reg (SRC_HEIGHT1_WIDTH1, (width << 16) | height);
   _memwD_reg (DST_CNTL, DstCntl);
   _memwD_reg (DST_Y_X, (dstX << 16) | dstY);
   _memwD_reg (DST_HEIGHT_WIDTH, (width << 16) | height);
 
   if (pBltParms->bltFlags & BLT_TRANSPARENT)
   {
          _memwD_reg (CLR_CMP_CNTL, COMPARE_DESTINATION | COMPARE_FALSE);      // turn off Transparency

   }
 
   return S_OK;
}

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ATI Sample Display Driver Optimization

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