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TROR/classic: fix a certain class of underdraw glitches.

Browse source 
Those were happening when wall drawing in an upper/lower layer "closed" too
much of the "curtain" (umost/dmost) for subsequent drawing in that portal.
Example: looking down the sewer manhole at the beginning of Retaliation will
now render without HOM.

git-svn-id: https://svn.eduke32.com/eduke32@2739 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-06-05 22:21:22 +00:00
parent 9f40f84cbe
commit 2fa7ccf9dd
1 changed files with 32 additions and 0 deletions
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32
polymer/eduke32/build/src/engine.c
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@ -4728,6 +4728,21 @@ static void drawalls(int32_t bunch)
if ((cz[2] >= cz[0]) && (cz[3] >= cz[1])) if ((cz[2] >= cz[0]) && (cz[3] >= cz[1]))
{ {
#ifdef YAX_ENABLE
int32_t doclip = (yax_globallev <= YAX_MAXDRAWS);
if (!doclip)
{
for (x=x1; x<=x2; x++)
if (dwall[x] < dmost[x] || uplc[x] < dmost[x])
{
doclip = 1;
break;
}
}
if (doclip)
#endif
for (x=x1; x<=x2; x++) for (x=x1; x<=x2; x++)
if (dwall[x] > umost[x]) if (dwall[x] > umost[x])
if (umost[x] <= dmost[x]) if (umost[x] <= dmost[x])
@ -4738,6 +4753,7 @@ static void drawalls(int32_t bunch)
} }
else else
{ {
// TROR: TODO: same doclip tweak as above?
for (x=x1; x<=x2; x++) for (x=x1; x<=x2; x++)
if (umost[x] <= dmost[x]) if (umost[x] <= dmost[x])
{ {
@ -4810,6 +4826,21 @@ static void drawalls(int32_t bunch)
if ((fz[2] <= fz[0]) && (fz[3] <= fz[1])) if ((fz[2] <= fz[0]) && (fz[3] <= fz[1]))
{ {
#ifdef YAX_ENABLE
int32_t doclip = (yax_globallev >= YAX_MAXDRAWS);
if (!doclip)
{
for (x=x1; x<=x2; x++)
if (uwall[x] > umost[x] || dplc[x] > umost[x])
{
doclip = 1;
break;
}
}
if (doclip)
#endif
for (x=x1; x<=x2; x++) for (x=x1; x<=x2; x++)
if (uwall[x] < dmost[x]) if (uwall[x] < dmost[x])
if (umost[x] <= dmost[x]) if (umost[x] <= dmost[x])
@ -4820,6 +4851,7 @@ static void drawalls(int32_t bunch)
} }
else else
{ {
// TROR: TODO: same doclip tweak as above?
for (x=x1; x<=x2; x++) for (x=x1; x<=x2; x++)
if (umost[x] <= dmost[x]) if (umost[x] <= dmost[x])
{ {