nanogui@linuxhacker.org

Kyle,
	Attached is a rewritten fblin16.c function, for speed.
It incorporates your patch, slightly rewritten.  Could you please
check that it works?

Also, from inspection it appears that fblin32.c has the same
problem.  Both of these fixes will appear in the next cut.

/* srccopy bitblt, opcode is currently ignored*/
void
linear16_blit(PSD dstpsd, COORD dstx, COORD dsty, COORD w, COORD h,
	PSD srcpsd, COORD srcx, COORD srcy, int op)
{
	ADDR16	dst = dstpsd->addr;
	ADDR16	src = srcpsd->addr;
	int	i;
	int	dlinelen = dstpsd->linelen;
	int	slinelen = srcpsd->linelen;

	assert (dst != 0);
	assert (dstx >= 0 && dstx < dstpsd->xres);
	assert (dsty >= 0 && dsty < dstpsd->yres);
	assert (w > 0);
	assert (h > 0);
	assert (src != 0);
	assert (srcx >= 0 && srcx < srcpsd->xres);
	assert (srcy >= 0 && srcy < srcpsd->yres);
	assert (dstx+w <= dstpsd->xres);
	assert (dsty+h <= dstpsd->yres);
	assert (srcx+w <= srcpsd->xres);
	assert (srcy+h <= srcpsd->yres);

	DRAWON;
	dst += dstx + dsty * dlinelen;
	src += srcx + srcy * slinelen;
	while(--h >= 0) {
#if 0
		/* a _fast_ memcpy is a _must_ in this routine*/
		wmemcpy(dst, src, w);
		dst += dlinelen;
		src += slinelen;
#else
		for(i=0; i<w; ++i)
			*dst++ = *src++;
		dst += dlinelen - w;
		src += slinelen - w;
#endif
	}
	DRAWOFF;
}