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Make R_SplitEntityOnNode easier to read.

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This commit is contained in:
Bill Currie 2012-01-03 23:19:21 +09:00
parent 454047ab92
commit d0a0440056
1 changed files with 25 additions and 17 deletions
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42
libs/video/renderer/r_efrag.c
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@ -62,7 +62,26 @@ init_efrag_list (t_efrag_list *efl)
for (i = 0; i < MAX_EFRAGS - 1; i++) for (i = 0; i < MAX_EFRAGS - 1; i++)
efl->efrags[i].entnext = &efl->efrags[i + 1]; efl->efrags[i].entnext = &efl->efrags[i + 1];
efl->efrags[i].entnext = NULL; efl->efrags[i].entnext = 0;
}
static efrag_t *
new_efrag (void)
{
efrag_t *ef;
if (__builtin_expect (!r_free_efrags, 0)) {
t_efrag_list *efl = calloc (1, sizeof (t_efrag_list));
SYS_CHECKMEM (efl);
efl->next = efrag_list;
efrag_list = efl;
init_efrag_list (efl);
r_free_efrags = &efl->efrags[0];
}
ef = r_free_efrags;
r_free_efrags = ef->entnext;
ef->entnext = 0;
return ef;
} }
void void
@ -114,7 +133,7 @@ R_RemoveEfrags (entity_t *ent)
r_free_efrags = old; r_free_efrags = old;
} }
ent->efrag = NULL; ent->efrag = 0;
} }
#define NODE_STACK_SIZE 1024 #define NODE_STACK_SIZE 1024
@ -139,25 +158,14 @@ R_SplitEntityOnNode (mnode_t *node)
leaf = (mleaf_t *) node; leaf = (mleaf_t *) node;
// grab an efrag off the free list ef = new_efrag (); // ensures ef->entnext is 0
ef = r_free_efrags;
if (__builtin_expect (!ef, 0)) {
t_efrag_list *efl = calloc (1, sizeof (t_efrag_list));
SYS_CHECKMEM (efl);
efl->next = efrag_list;
efrag_list = efl;
ef = r_free_efrags = &efl->efrags[0];
}
r_free_efrags = r_free_efrags->entnext;
// add the link to the chain of links on the entity
ef->entity = r_addent; ef->entity = r_addent;
// add the entity link
*lastlink = ef; *lastlink = ef;
lastlink = &ef->entnext; lastlink = &ef->entnext;
ef->entnext = NULL;
// set the leaf links // add the link too the chain of links on the leaf
ef->leaf = leaf; ef->leaf = leaf;
ef->leafnext = leaf->efrags; ef->leafnext = leaf->efrags;
leaf->efrags = ef; leaf->efrags = ef;
@ -203,7 +211,7 @@ R_AddEfrags (entity_t *ent)
r_addent = ent; r_addent = ent;
lastlink = &ent->efrag; lastlink = &ent->efrag;
r_pefragtopnode = NULL; r_pefragtopnode = 0;
entmodel = ent->model; entmodel = ent->model;