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gallium: fix broken hashing for vertex translation

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It seems we get hash collisions fairly easily and the code as it was didn't
deal with that properly.

I think we need a simpler hashing interface...
This commit is contained in:
Brian Paul 2008-04-23 10:29:52 -06:00
parent 43be7a4819
commit 333976c90a
1 changed files with 13 additions and 5 deletions
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18
src/gallium/auxiliary/draw/draw_pt_fetch.c
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@ -70,13 +70,21 @@ static struct translate *cached_translate(struct pt_fetch *fetch,
struct cso_hash_iter iter = cso_hash_find(fetch->hash, hash_key);
struct translate *translate = 0;
if (cso_hash_iter_is_null(iter)) {
while (!cso_hash_iter_is_null(iter)) {
void *iter_data = cso_hash_iter_data(iter);
if (memcmp(iter_data, key, sizeof(*key)) == 0) {
/* found */
translate = cso_hash_iter_data(iter);
break;
}
iter = cso_hash_iter_next(iter);
/*debug_printf("\tOK with %d\n", hash_key);*/
}
if (!translate) {
/* create/insert */
translate = translate_create(key);
cso_hash_insert(fetch->hash, hash_key, translate);
/*debug_printf("\tCREATED with %d\n", hash_key);*/
} else {
translate = cso_hash_iter_data(iter);
/*debug_printf("\tOK with %d\n", hash_key);*/
}
return translate;