BunnyPixel example_fragment_shader(const BunnyVertVsOut& fsin,const TinyImage& texture)
{
BunnyPixel p;
//p.color.head<3>()=fsin.color;
p.diffuse_color=texture(fsin.texcoord.x(),fsin.texcoord.y()).head<3>();
float f=fsin.p.z();
Eigen::Vector2f zrange(-0.199768,0.309477);
f-=zrange[0];
f/=(zrange[1]-zrange[0]);
//std::cerr << f << std::endl;
//p.color[3]=f;
//p.color=Eigen::Vector4f(f,f,f,f);
p.normal=(fsin.normal/fsin.normal.norm())*0.5f+Eigen::Vector3f(0.5f,0.5f,0.5f);
p.new_depth=f;
//depth is already set by rasterizer
return p;
}
int zset_range(ldb_context_t* context, const ldb_slice_t* name,
int rank_start, int rank_end, int reverse, ldb_list_t **pkeylist, ldb_list_t** pmetalist){
int retval = 0;
uint64_t offset, limit, size = 0;
retval = zset_size(context, name, &size);
if(retval != LDB_OK && retval != LDB_OK_NOT_EXIST){
goto end;
}
if(rank_start < 0){
rank_start = rank_start + size;
}
if(rank_end < 0 ){
rank_end = rank_end + size;
}
if(rank_start < 0){
rank_start = 0;
}
if(rank_start > rank_end || rank_start >= (int)size){
retval = LDB_OK_RANGE_HAVE_NONE;
goto end;
}
if(rank_end >= (int)size){
rank_end = (int)(size - 1);
limit = rank_end - rank_start + 10;
}else{
limit = rank_end - rank_start + 1;
}
offset = rank_start;
ldb_zset_iterator_t *iterator = NULL;
if(zrange(context, name, offset, limit, reverse, &iterator)<0){
retval = LDB_OK_RANGE_HAVE_NONE;
goto end;
}
ldb_list_t *keylist = ldb_list_create();
ldb_list_t *metlist = ldb_list_create();
while(1){
if(!ldb_zset_iterator_valid(iterator)){
break;
}
size_t raw_vlen = 0;
const char* raw_val = ldb_zset_iterator_val_raw(iterator, &raw_vlen);
assert(raw_vlen >= LDB_VAL_META_SIZE);
uint8_t type = leveldb_decode_fixed8(raw_val);
if((type & LDB_VALUE_TYPE_VAL)&& !(type & LDB_VALUE_TYPE_LAT)){
ldb_slice_t *key = NULL;
int64_t value = 0;
size_t raw_klen = 0;
const char* raw_key = ldb_zset_iterator_key_raw(iterator, &raw_klen);
if(decode_zscore_key( raw_key,
raw_klen,
NULL,
&key,
&value)==0){
//first node
ldb_list_node_t* key_node = ldb_list_node_create();
key_node->type_ = LDB_LIST_NODE_TYPE_SLICE;
key_node->value_ = value;
key_node->data_ = key;
rpush_ldb_list_node(keylist, key_node);
//second
uint64_t version = leveldb_decode_fixed64(raw_val + sizeof(uint8_t));
ldb_list_node_t* met_node = ldb_list_node_create();
met_node->type_ = LDB_LIST_NODE_TYPE_BASE;
met_node->value_ = version;
met_node->data_ = NULL;
rpush_ldb_list_node(metlist, met_node);
}
}
if(ldb_zset_iterator_next(iterator)){
break;
}
}
*pkeylist = keylist;
*pmetalist = metlist;
ldb_zset_iterator_destroy(iterator);
retval = LDB_OK;
end:
return retval;
}
int zset_del_range_by_rank(ldb_context_t* context, const ldb_slice_t* name,
const ldb_meta_t* meta, int rank_start, int rank_end, uint64_t *deleted){
int retval = 0;
ldb_zset_iterator_t *iterator = NULL;
uint64_t offset, limit, size = 0;
retval = zset_size(context, name, &size);
if(retval == LDB_OK_NOT_EXIST){
goto end;
}
if(retval != LDB_OK){
goto end;
}
if(rank_start < 0){
rank_start = rank_start + size;
}
if(rank_end < 0 ){
rank_end = rank_end + size;
}
if(rank_start < 0){
rank_start = 0;
}
if(rank_start > rank_end || rank_start >= (int)size){
retval = LDB_OK_RANGE_HAVE_NONE;
goto end;
}
if(rank_end >= (int)size){
rank_end = (int)(size - 1);
limit = rank_end - rank_start + 10;
}else{
limit = rank_end - rank_start ;
}
offset = rank_start;
if(zrange(context, name, offset, limit, 0, &iterator)<0){
retval = LDB_OK_RANGE_HAVE_NONE;
goto end;
}
(*deleted) = 0;
do{
if((*deleted)==limit){
break;
}
if(!ldb_zset_iterator_valid(iterator)){
break;
}
size_t raw_vlen = 0;
const char* raw_val = ldb_zset_iterator_val_raw(iterator, &raw_vlen);
uint8_t type = leveldb_decode_fixed8(raw_val);
if((type & LDB_VALUE_TYPE_VAL) && !(type & LDB_VALUE_TYPE_LAT)){
size_t raw_klen = 0;
const char* raw_key = ldb_zset_iterator_key_raw(iterator, &raw_klen);
ldb_slice_t *key = NULL;
if(decode_zscore_key( raw_key,
raw_klen,
NULL,
&key,
NULL)== 0){
if(zset_del(context, name, key, meta) == LDB_OK){
*deleted += 1;
}
ldb_slice_destroy(key);
}
}
}while(!ldb_zset_iterator_next(iterator));
retval = LDB_OK;
end:
ldb_zset_iterator_destroy(iterator);
return retval;
}
