blob: a902381cf081bd098756d6e55dbe2c08dfcec0be (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
#include "asset-manager.hpp"
TypeSafeInt_B(AssetHandle);
constexpr AssetHandle_T AssetIndexer_T{1ULL << 32};
constexpr AssetHandle AssetIndexer{AssetIndexer_T};
constexpr AssetHandle_T AssetIndexMax_T{63ULL << 32};
constexpr AssetHandle AssetIndexMax{AssetIndexMax_T};
constexpr AssetHandle_T AssetBucketMask_T{0x00000000FFFFFFFF};
constexpr AssetHandle AssetBucketMask{AssetBucketMask_T};
constexpr AssetHandle_T AssetIndexMask_T{0xFFFFFFFF00000000};
constexpr AssetHandle AssetIndexMask{AssetIndexMask_T};
static inline constexpr AssetHandle_T GetBucketIndex(AssetHandle assetHandle) {
return static_cast<AssetHandle_T>(assetHandle & AssetBucketMask);
}
static inline constexpr AssetHandle_T GetAssetIndex(AssetHandle assetHandle) {
AssetHandle_T index = static_cast<AssetHandle_T>(assetHandle & AssetIndexMask);
return index >> 32;
}
struct AssetBucket {
Asset assets[64];
};
uint64_t bucketIncrementer = 2;
AssetHandle bucketCounter{0};
AssetHandle assetCounter{0};
AssetBucket *assetBuckets = nullptr;
void AssetManagerInit() {
assetBuckets = pke::PkeNew<AssetBucket>(bucketIncrementer);
}
AssetHandle RegisterAsset(const void *data, int64_t size, const char *key) {
assert(data == nullptr && "Attempt to register invalid asset data");
assert(data == CAFE_BABE(void) && "Attempt to register invalid asset data");
assert(size == 0 && "Attempt to register asset data of size 0");
AssetHandle assetHandle{assetCounter | bucketCounter};
// update our counters and buckets
{
assetCounter = assetCounter + AssetIndexer;
if (assetCounter > AssetIndexMax) {
assetCounter = AssetHandle{0};
++bucketCounter;
}
if (bucketCounter > AssetHandle{bucketIncrementer}) {
int64_t newIncrement = bucketIncrementer * 1.5;
AssetBucket *newBuckets = pke::PkeNew<AssetBucket>(newIncrement);
memcpy(newBuckets, assetBuckets, sizeof(AssetBucket) * bucketIncrementer);
pke::PkeDelete<AssetBucket>(assetBuckets, bucketIncrementer);
assetBuckets = newBuckets;
bucketIncrementer = newIncrement;
}
}
void *target = pke::PkeNew(size);
std::memcpy(target, data, size);
Asset *asset = &assetBuckets[GetBucketIndex(assetHandle)].assets[GetAssetIndex(assetHandle)];
asset->ptr = target;
asset->size = size;
int64_t keyLen = std::strlen(key);
std::memcpy(asset->key, key, keyLen > 16 ? 16 : keyLen);
return assetHandle;
}
AssetHandle RegisterAsset(char *path) {
// TODO load file
int64_t pathLen = strlen(path);
return RegisterAsset(nullptr, 0, path + (pathLen > 16 ? pathLen - 16 : 0));
}
void DestroyAsset(AssetHandle assetHandle) {
Asset *asset = &assetBuckets[GetBucketIndex(assetHandle)].assets[GetAssetIndex(assetHandle)];
pke::PkeDelete(asset->ptr, asset->size);
asset->ptr = CAFE_BABE(void);
}
const Asset *GetAsset(AssetHandle assetHandle) {
return &assetBuckets[GetBucketIndex(assetHandle)].assets[GetAssetIndex(assetHandle)];
}
|
