Пример #1
0
//Return space from the top of the hunk
void *Hunk_TempAlloc (int size) {
    void *buf;

    size = (size + 15) & ~15;

    if (hunk_tempactive) {
        Hunk_FreeToHighMark (hunk_tempmark);
        hunk_tempactive = false;
    }

    hunk_tempmark = Hunk_HighMark ();

    buf = Hunk_HighAllocName (size, "temp");

    hunk_tempactive = true;

    return buf;
}
Пример #2
0
/*
================
VID_AllocBuffers
================
*/
static qboolean VID_AllocBuffers (int width, int height)
{
	int		tsize, tbuffersize;

	tbuffersize = width * height * sizeof (*d_pzbuffer);

	tsize = D_SurfaceCacheForRes (width, height);

	tbuffersize += tsize;

// see if there's enough memory, allowing for the normal mode 0x13 pixel,
// z, and surface buffers
	//if ((host_parms->memsize - tbuffersize + SURFCACHE_SIZE_AT_320X200 +
	//	 0x10000 * 3) < MINIMUM_MEMORY)
	// Pa3PyX: using hopefully better estimation now
	// if total memory < needed surface cache + (minimum operational memory
	// less surface cache for 320x200 and typical hunk state after init)
	if (host_parms->memsize < tbuffersize + 0x180000 + 0xC00000)
	{
		Con_SafePrintf ("Not enough memory for video mode\n");
		return false;		// not enough memory for mode
	}

	vid_surfcachesize = tsize;

	if (d_pzbuffer)
	{
		D_FlushCaches ();
		Hunk_FreeToHighMark (VID_highhunkmark);
		d_pzbuffer = NULL;
	}

	VID_highhunkmark = Hunk_HighMark ();

	d_pzbuffer = (short *) Hunk_HighAllocName (tbuffersize, "video");

	vid_surfcache = (byte *)d_pzbuffer +
			width * height * sizeof (*d_pzbuffer);
	
	return true;
}