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Cache the distrecip[] table

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Patch from Nuke.YKT.

git-svn-id: https://svn.eduke32.com/eduke32@7866 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2019-08-01 06:50:26 +00:00 committed by Christoph Oelckers
parent 0091acc858
commit acc0b527a9
1 changed files with 39 additions and 10 deletions
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49
source/build/src/engine.cpp
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@ -126,6 +126,13 @@ static int32_t ggxinc[MAXXSIZ+1], ggyinc[MAXXSIZ+1];
static int32_t lowrecip[1024], nytooclose; static int32_t lowrecip[1024], nytooclose;
static const int32_t nytoofar = DISTRECIPSIZ*16384ull - 1048576; static const int32_t nytoofar = DISTRECIPSIZ*16384ull - 1048576;
static uint32_t *distrecip; static uint32_t *distrecip;
#define DISTRECIPCACHESIZE 3
static struct {
uint32_t *distrecip;
int32_t xdimen;
int32_t age;
} distrecipcache[DISTRECIPCACHESIZE];
static int32_t distrecipagecnt = 0;
static int32_t *lookups = NULL; static int32_t *lookups = NULL;
static int32_t beforedrawrooms = 1; static int32_t beforedrawrooms = 1;
@ -7532,18 +7539,38 @@ static void dosetaspect(void)
if (xdimen != oxdimen && (playing_blood || voxoff[0][0])) if (xdimen != oxdimen && (playing_blood || voxoff[0][0]))
{ {
if (distrecip == NULL) distrecip = NULL;
distrecip = (uint32_t *)Xaligned_alloc(16, DISTRECIPSIZ * sizeof(uint32_t)); for (i = 0; i < DISTRECIPCACHESIZE; i++)
if (xdimen < 1 << 11)
{ {
for (i = 1; i < DISTRECIPSIZ; i++) if (distrecipcache[i].xdimen == xdimen)
distrecip[i] = tabledivide32(xdimen << 20, i); distrecip = distrecipcache[i].distrecip;
} }
else if (distrecip == NULL)
{ {
for (i = 1; i < DISTRECIPSIZ; i++) int32_t minAge = 0;
distrecip[i] = tabledivide64((uint64_t)xdimen << 20, i); for (i = 1; i < DISTRECIPCACHESIZE; i++)
{
if (distrecipcache[i].age < distrecipcache[minAge].age)
minAge = i;
}
if (distrecipcache[minAge].distrecip == NULL)
distrecipcache[minAge].distrecip = (uint32_t *)Xaligned_alloc(16, DISTRECIPSIZ * sizeof(uint32_t));
distrecipcache[minAge].age = ++distrecipagecnt;
distrecipcache[minAge].xdimen = xdimen;
distrecip = distrecipcache[minAge].distrecip;
if (xdimen < 1 << 11)
{
for (i = 1; i < DISTRECIPSIZ; i++)
distrecip[i] = tabledivide32(xdimen << 20, i);
}
else
{
for (i = 1; i < DISTRECIPSIZ; i++)
distrecip[i] = tabledivide64((uint64_t)xdimen << 20, i);
}
} }
nytooclose = xdimen*2100; nytooclose = xdimen*2100;
@ -8212,7 +8239,9 @@ void engineUnInit(void)
Buninitart(); Buninitart();
DO_FREE_AND_NULL(lookups); DO_FREE_AND_NULL(lookups);
ALIGNED_FREE_AND_NULL(distrecip); for (bssize_t i=0; i<DISTRECIPCACHESIZE; i++)
ALIGNED_FREE_AND_NULL(distrecipcache[i].distrecip);
Bmemset(distrecipcache, 0, sizeof(distrecipcache));
paletteloaded = 0; paletteloaded = 0;