diff options
| -rw-r--r-- | src/gallium/state_trackers/d3d1x/d3d1xstutil/include/d3d1xstutil.h | 40 |
1 files changed, 33 insertions, 7 deletions
diff --git a/src/gallium/state_trackers/d3d1x/d3d1xstutil/include/d3d1xstutil.h b/src/gallium/state_trackers/d3d1x/d3d1xstutil/include/d3d1xstutil.h index f79cc72a5d..ab195f1af8 100644 --- a/src/gallium/state_trackers/d3d1x/d3d1xstutil/include/d3d1xstutil.h +++ b/src/gallium/state_trackers/d3d1x/d3d1xstutil/include/d3d1xstutil.h @@ -748,21 +748,48 @@ static inline bool operator !=(const c_string& a, const c_string& b) return strcmp(a.p, b.p); } -#ifdef __GLIBCXX__ +static inline size_t raw_hash(const char* p, size_t size) +{ + size_t res; + if(sizeof(size_t) >= 8) + res = (size_t)14695981039346656037ULL; + else + res = (size_t)2166136261UL; + const char* end = p + size; + for(; p != end; ++p) + { + res ^= (size_t)*p++; + if(sizeof(size_t) >= 8) + res *= (size_t)1099511628211ULL; + else + res *= (size_t)16777619UL; + } + return res; +}; + +template<typename T> +static inline size_t raw_hash(const T& t) +{ + return raw_hash((const char*)&t, sizeof(t)); +} + +// TODO: only tested with the gcc libstdc++, might not work elsewhere namespace std { +#ifndef _MSC_VER namespace tr1 { +#endif template<> inline size_t hash<GUID>::operator()(GUID __val) const { - return _Fnv_hash::hash(__val); + return raw_hash(__val); } template<> inline size_t hash<c_string>::operator()(c_string __val) const { - return _Fnv_hash::hash(__val.p, strlen(__val.p)); + return raw_hash(__val.p, strlen(__val.p)); } template<typename T, typename U> @@ -777,13 +804,12 @@ namespace std std::pair<size_t, size_t> p; p.first = hash<T>()(__val.first); p.second = hash<U>()(__val.second); - return _Fnv_hash::hash(p); + return raw_hash(p); } +#ifndef _MSC_VER } -} -#else -#warning "You probably need to add a pair, C string and GUID hash implementation for your C++ library" #endif +} template<typename Base, typename RefCnt = refcnt_t> struct GalliumPrivateDataComObject : public GalliumComObject<Base, RefCnt> |