Function UpdateDHiResCell

source/RGBMonitor.cpp:618–647

#define VALUE  (dwordval >> (4 + PIXEL - COLOR))

void UpdateDHiResCell(int x, int y, uint16_t addr, bgra_t* pVideoAddress, bool updateAux, bool updateMain)
{
	const int xpixel = x * 14;

	uint8_t* pAux = MemGetAuxPtr(addr);
	uint8_t* pMain = MemGetMainPtr(addr);

	BYTE byteval1 = (x > 0) ? *(pMain - 1) : 0;
	BYTE byteval2 = *pAux;
	BYTE byteval3 = *pMain;
	BYTE byteval4 = (x < 39) ? *(pAux + 1) : 0;

	uint32_t dwordval = (byteval1 & 0x70) | ((byteval2 & 0x7F) << 7) |
		((byteval3 & 0x7F) << 14) | ((byteval4 & 0x07) << 21);

#define PIXEL  0
	if (updateAux)
	{
		CopySource(7, 2, SRCOFFS_DHIRES + 10 * HIBYTE(VALUE) + COLOR, LOBYTE(VALUE), pVideoAddress);
		pVideoAddress += 7;
	}
#undef PIXEL

#define PIXEL  7
	if (updateMain)
	{
		CopySource(7, 2, SRCOFFS_DHIRES + 10 * HIBYTE(VALUE) + COLOR, LOBYTE(VALUE), pVideoAddress);
	}
#undef PIXEL
}

//===========================================================================
// RGB videocards HGR