//-----------------------------------------------------------------------------
//
// This file contains color blend functions.
//
// Copyright (C) Microsoft Corporation, 1997.
//
// WARNING WARNING WARNING
// This cpp file generated from mcp file.
// EDIT THE MCP FILE.
// I warned you.
// WARNING WARNING WARNING
//
//-----------------------------------------------------------------------------

include(`m4hdr.mh')dnl
#include "rgb_pch.h"
#pragma hdrstop
#include "ccrbd_mh.h"

define(`d_ColorBlend', `
void C_ColorBlend_$1_$2(PD3DI_RASTCTX pCtx, PD3DI_RASTPRIM pP,
                         PD3DI_RASTSPAN pS)
{
dnl if (($1 == AllBlend) || ($2 == AllROP))
ifelse(eval((d_index(`$1', `AllBlend') == 0) || (d_index(`$2', `AllROP') == 0)), `1', `
    D3DCOLOR DestColor = pCtx->pfnBufRead(pS->pSurface);')
dnl
ifelse(`$1', `AllBlend', `
    {
        numeric_limits< UINT16> Dummy;
        UINT16 uSR, uSG, uSB, uSA;
        UINT16 uBR, uBG, uBB, uBA;
        UINT32 u2R, u2G, u2B, u2A;
        pCtx->pfnSrcBlend (&uSR, &uSG, &uSB, &uSA, DestColor, pCtx);
        pCtx->pfnDestBlend(&uBR, &uBG, &uBB, &uBA, DestColor, pCtx);

        u2B= uSB;  u2G= uSG;  u2R= uSR;  u2A= uSA;
        clamp_max< UINT32>( u2B+= uBB, Dummy.max());
        clamp_max< UINT32>( u2G+= uBG, Dummy.max());
        clamp_max< UINT32>( u2R+= uBR, Dummy.max());
        clamp_max< UINT32>( u2A+= uBA, Dummy.max());
        pCtx->SI.uBB = static_cast<UINT16>(u2B);
        pCtx->SI.uBG = static_cast<UINT16>(u2G);
        pCtx->SI.uBR = static_cast<UINT16>(u2R);
        pCtx->SI.uBA = static_cast<UINT16>(u2A);
    }')
dnl
dnl
ifelse(`$2', `AllROP', `
    {
        // It might be faster to do this in conjunction with the write.
        // It might be faster to do this through a function pointer too.
        UINT16 uBB = (UINT16)RGBA_GETBLUE(DestColor)<<8;
        UINT16 uBG = (UINT16)RGBA_GETGREEN(DestColor)<<8;
        UINT16 uBR = (UINT16)RGBA_GETRED(DestColor)<<8;
        UINT16 uBA = (UINT16)RGBA_GETALPHA(DestColor)<<8;

        switch (pCtx->pdwRenderState[D3DRENDERSTATE_ROP2]) {
//        case R2_BLACK      : d_RepStr(`pCtx->SI.XX = 0; ',                  XX, uBB, uBG, uBR, uBA)break;
//        case R2_NOTMERGEPEN: d_RepStr(`pCtx->SI.XX = ~(pCtx->SI.XX | XX); ',XX, uBB, uBG, uBR, uBA)break;
//        case R2_MASKNOTPEN : d_RepStr(`pCtx->SI.XX = ~pCtx->SI.XX & XX; ',  XX, uBB, uBG, uBR, uBA)break;
//        case R2_NOTCOPYPEN : d_RepStr(`pCtx->SI.XX = ~pCtx->SI.XX; ',       XX, uBB, uBG, uBR, uBA)break;
//        case R2_MASKPENNOT : d_RepStr(`pCtx->SI.XX = pCtx->SI.XX & ~XX; ',  XX, uBB, uBG, uBR, uBA)break;
//        case R2_NOT        : d_RepStr(`pCtx->SI.XX = ~XX; ',                XX, uBB, uBG, uBR, uBA)break;
//        case R2_XORPEN     : d_RepStr(`pCtx->SI.XX = pCtx->SI.XX ^ XX; ',   XX, uBB, uBG, uBR, uBA)break;
//        case R2_NOTMASKPEN : d_RepStr(`pCtx->SI.XX = ~(pCtx->SI.XX & XX); ',XX, uBB, uBG, uBR, uBA)break;
//        case R2_MASKPEN    : d_RepStr(`pCtx->SI.XX = pCtx->SI.XX & XX; ',   XX, uBB, uBG, uBR, uBA)break;
//        case R2_NOTXORPEN  : d_RepStr(`pCtx->SI.XX = ~(pCtx->SI.XX ^ XX); ',XX, uBB, uBG, uBR, uBA)break;
//        case R2_NOP        : d_RepStr(`pCtx->SI.XX = XX; ',                 XX, uBB, uBG, uBR, uBA)break;
//        case R2_MERGENOTPEN: d_RepStr(`pCtx->SI.XX = ~pCtx->SI.XX | XX; ',  XX, uBB, uBG, uBR, uBA)break;
        case R2_COPYPEN    : d_RepStr(`pCtx->SI.XX = pCtx->SI.XX; ',        XX, uBB, uBG, uBR, uBA)break;
//        case R2_MERGEPENNOT: d_RepStr(`pCtx->SI.XX = pCtx->SI.XX | ~XX; ',  XX, uBB, uBG, uBR, uBA)break;
//        case R2_MERGEPEN   : d_RepStr(`pCtx->SI.XX = pCtx->SI.XX | XX; ',   XX, uBB, uBG, uBR, uBA)break;
//        case R2_WHITE      : d_RepStr(`pCtx->SI.XX = 0xffff; ',             XX, uBB, uBG, uBR, uBA)break;
        }
    }')
dnl
    pCtx->pfnColorBlendEnd(pCtx, pP, pS);
}')
dnl

d_RepStr(`d_RepStr(`d_ColorBlend(AA, BB)',
        `AA', `SrcOne_DestZero', `AllBlend')',
        `BB', `SrcCopy', `AllROP')