//
//  Copyright(C) Renesas Technology Corp. 1998-2003. All rights reserved.
//  Portions Copyright (c) 1995-2000 Microsoft Corporation.
//
//  NCG Display Driver for ITS-DS7
//
//  FILE      : blt.cpp
//  CREATED   : 2003.08.28
//  MODIFIED  : 2003.11.28
//  AUTHOR    : Renesas Technology Corp.
//  HARDWARE  : RENESAS ITS-DS7
//  HISTORY   : 
//              2003.08.28
//              - Created prototype code.
//                (based on Q2SD Display Driver for PFM-DS6C Ver.3.1.0)
//

#include "precomp.h"

SCODE NCG::BltPrepare(
    GPEBltParms *pBltParms )
{
    NCGSurf* pSrc = (NCGSurf*)(pBltParms->pSrc);
    NCGSurf* pDst = (NCGSurf*)(pBltParms->pDst);

    DWORD srcLeft, srcTop, srcRight, srcBottom;
    DWORD dstLeft, dstTop, dstRight, dstBottom;

    if (pBltParms->prclDst) {
        dstLeft = pBltParms->prclDst->left;
        dstTop = pBltParms->prclDst->top;
        dstRight = pBltParms->prclDst->right;
        dstBottom = pBltParms->prclDst->bottom;
    }
    else {
        dstLeft = 0;
        dstTop = 0;
        dstRight = pDst->Width();
        dstBottom = pDst->Height();
    }

    DEBUGMSG(GPE_ZONE_BLT_HI,
        (TEXT("BltPrepare: Dest is (%d, %d) - (%d, %d)\r\n"),
        dstLeft, dstTop, dstRight, dstBottom));
    if (pDst->InVideoMemory())
        DEBUGMSG(GPE_ZONE_BLT_HI,
            (TEXT("BltPrepare: %dbpp, VideoMemory, offset=%x.\r\n"),
            EGPEFormatToBpp[pDst->Format()], pDst->OffsetInVideoMemory()));
    else
        DEBUGMSG(GPE_ZONE_BLT_HI,
            (TEXT("BltPrepare: %dbpp, SystemMemory, address=%x.\r\n"),
            EGPEFormatToBpp[pDst->Format()], pDst->Buffer()));

    if (pSrc) {
        if (pBltParms->prclSrc) {
            srcLeft = pBltParms->prclSrc->left;
            srcTop = pBltParms->prclSrc->top;
            srcRight = pBltParms->prclSrc->right;
            srcBottom = pBltParms->prclSrc->bottom;
        }
        else {
            srcLeft = 0;
            srcTop = 0;
            srcRight = pSrc->Width();
            srcBottom = pSrc->Height();
        }
        DEBUGMSG(GPE_ZONE_BLT_HI,
            (TEXT("BltPrepare: Src is (%d, %d) - (%d, %d)\r\n"),
            srcLeft, srcTop, srcRight, srcBottom));

        if (pSrc->InVideoMemory())
            DEBUGMSG(GPE_ZONE_BLT_HI,
                (TEXT("BltPrepare: %dbpp, VideoMemory, offset=%x.\r\n"),
                EGPEFormatToBpp[pSrc->Format()], pSrc->OffsetInVideoMemory()));
        else
            DEBUGMSG(GPE_ZONE_BLT_HI,
                (TEXT("BltPrepare: %dbpp, SystemMemory, address=%x.\r\n"),
                EGPEFormatToBpp[pSrc->Format()], pSrc->Buffer()));
    }
    DEBUGMSG(GPE_ZONE_BLT_HI,
        (TEXT("BltPrepare: ROP4=%04x\r\n"), pBltParms->rop4));
    DEBUGWAIT(GPE_ZONE_BLT_LO);

    /* currently no GDI BitBlt acceleration */
    pBltParms->pBlt = EmulatedBlt;

#ifdef ENABLE_EMULATION
    /* This part is copied from S3Virge DDGPE display driver. */

#define FUNCNAME(basename) \
    (SCODE (GPE::*)(struct GPEBltParms *))Emulator::Emulated##basename

    // If there wasn't any accelerated function available, let's see if there
    // is an emulated function that will be a little faster.

    if (pBltParms->pBlt == EmulatedBlt) 
    {
		if (pBltParms->rop4 == 0xAAF0)    // Special PATCOPY rop for text output -- fill where mask is set.
        {		// Not a pattern brush?
        		if( (pBltParms->solidColor != -1) &&
        			(pBltParms->pDst->Format() == gpe16Bpp) )
        		{
        			WaitForNotBusy();
        			if (pBltParms->pMask->Format() == gpe1Bpp)
        			{
						pBltParms->pBlt = FUNCNAME(BltText16);
        			}
        			else   // Anti-aliased text
        			{
        				pBltParms->pBlt = FUNCNAME(BltAlphaText16);
        			}
        		}
		}
        //
        // Bail on any parameter values that would make this
        // blt non-emulatable
        //
        if (!(EGPEFormatToBpp[pBltParms->pDst->Format()] != 8        ||
             (pBltParms->bltFlags & (BLT_TRANSPARENT | BLT_STRETCH)) ||
             pBltParms->pLookup                                      ||  
             pBltParms->pConvert))
        {
            switch (pBltParms->rop4)
            {
                case 0x0000:    // BLACKNESS
                    DEBUGMSG(GPE_ZONE_BLT_LO,
                        (TEXT("NCG::Blt - BLACKNESS\r\n")));
                    pBltParms->solidColor = 0;
                    pBltParms->pBlt = FUNCNAME(BltFill08);
                    break;

                case 0xFFFF:    // WHITENESS
                    DEBUGMSG(GPE_ZONE_BLT_LO,
                        (TEXT("NCG::Blt - WHITENESS\r\n")));
                    pBltParms->solidColor = 0x00ffffff;
                    pBltParms->pBlt = FUNCNAME(BltFill08);
                    break;

                case 0xF0F0:    // PATCOPY
                    if( pBltParms->solidColor != -1 )
                    {
                        DEBUGMSG(GPE_ZONE_BLT_LO,
                            (TEXT("NCG::Blt - PATCOPY - solid brush\r\n")));
                        pBltParms->pBlt = FUNCNAME(BltFill08);
                    }
                    break;
                case 0xCCCC:    // SRCCOPY
                    if (pBltParms->pSrc->Format() == gpe8Bpp)
                    {
                        WaitForNotBusy();
                        pBltParms->pBlt = FUNCNAME(BltSrcCopy0808);
                    }
                    break;
                    
#if 0
                case 0xAAF0:    // Special PATCOPY rop for text output -- 
                                // fill where mask is set.
                    // Not a pattern brush?
                    if( pBltParms->solidColor != -1 )
                    {
                        WaitForNotBusy();
                        pBltParms->pBlt = FUNCNAME(BltText08);
                    }
					break;
#endif
                case 0x5A5A :   // PATINVERT
                    if( pBltParms->solidColor != -1 )
                    {
                        DEBUGMSG(GPE_ZONE_BLT_LO,
                          (TEXT("NCG::Blt - PATINVERT - solid brush\r\n")));
                        pBltParms->pBlt = FUNCNAME(BltPatInvert08);
                    }
                    break;
                case 0x5555:    // DSTINVERT
                    DEBUGMSG(GPE_ZONE_BLT_LO,
                        (TEXT("NCG::Blt - DSTINVERT\r\n")));
                    pBltParms->pBlt = FUNCNAME(BltDstInvert08);
                    break;
                case 0x8888:    // SRCAND
                    DEBUGMSG(GPE_ZONE_BLT_LO,
                        (TEXT("NCG::Blt - SRCAND\r\n")));
                    if (pBltParms->pSrc->Format() == gpe8Bpp)
                    {
                        pBltParms->pBlt = FUNCNAME(BltSrcAnd0808);
                    }
                    break;
                case 0xEEEE:    // SRCPAINT
                    DEBUGMSG(GPE_ZONE_BLT_LO,
                        (TEXT("NCG::Blt - SRCPAINT\r\n")));
                    if (pBltParms->pSrc->Format() == gpe8Bpp)
                    {
                        pBltParms->pBlt = FUNCNAME(BltSrcPaint0808);
                    }
                    break;
                case 0x6666:    // SRCINVERT
                    DEBUGMSG(GPE_ZONE_BLT_LO,
                        (TEXT("NCG::Blt - SRCINVERT\r\n")));
                    if (pBltParms->pSrc->Format() == gpe8Bpp)
                    {
                        pBltParms->pBlt = FUNCNAME(BltSrcInvert0808);
                    }
                    break;

                default:        // some random ROP4
                    ;
            }
        }
    }
#endif

	return S_OK;
}


SCODE NCG::BltComplete( GPEBltParms *pBltParms )
{
    return S_OK;
}