//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;
}
/*
================
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;
}