projects
/
carveJwlIkooP6JGAAIwe30JlM.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
POWER
[carveJwlIkooP6JGAAIwe30JlM.git]
/
bvh.h
diff --git
a/bvh.h
b/bvh.h
index 9fdbe985040f51e0cadfd0a183b921240c82a036..84f4c6b7d675c7b1cfdf9f914722b572424aa347 100644
(file)
--- a/
bvh.h
+++ b/
bvh.h
@@
-137,6
+137,15
@@
VG_STATIC void bh_subdivide( bh_tree *bh, u32 inode )
VG_STATIC bh_tree *bh_create( void *lin_alloc, bh_system *system,
void *user, u32 item_count )
{
VG_STATIC bh_tree *bh_create( void *lin_alloc, bh_system *system,
void *user, u32 item_count )
{
+ if( item_count == 0 )
+ {
+ bh_tree *bh = vg_linear_alloc( lin_alloc, sizeof(bh_tree) );
+ bh->node_count = 0;
+ bh->system = system;
+ bh->user = user;
+ return bh;
+ }
+
u32 totsize = sizeof(bh_tree) + sizeof(bh_node)*(item_count*2-1);
bh_tree *bh = vg_linear_alloc( lin_alloc, totsize );
bh->system = system;
u32 totsize = sizeof(bh_tree) + sizeof(bh_node)*(item_count*2-1);
bh_tree *bh = vg_linear_alloc( lin_alloc, totsize );
bh->system = system;
@@
-192,6
+201,9
@@
VG_STATIC void bh_debug_node( bh_tree *bh, u32 inode, v3f pos, u32 colour )
VG_STATIC int bh_ray( bh_tree *bh, v3f co, v3f dir, ray_hit *hit )
{
VG_STATIC int bh_ray( bh_tree *bh, v3f co, v3f dir, ray_hit *hit )
{
+ if( bh->node_count < 2 )
+ return 0;
+
int count = 0;
u32 stack[100];
u32 depth = 2;
int count = 0;
u32 stack[100];
u32 depth = 2;
@@
-243,6
+255,9
@@
VG_STATIC int bh_ray( bh_tree *bh, v3f co, v3f dir, ray_hit *hit )
VG_STATIC int bh_select( bh_tree *bh, boxf box, u32 *buffer, int len )
{
VG_STATIC int bh_select( bh_tree *bh, boxf box, u32 *buffer, int len )
{
+ if( bh->node_count < 2 )
+ return 0;
+
int count = 0;
u32 stack[100];
u32 depth = 2;
int count = 0;
u32 stack[100];
u32 depth = 2;