diff options
Diffstat (limited to 'indra/llmath/llvector4a.h')
| -rwxr-xr-x[-rw-r--r--] | indra/llmath/llvector4a.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/indra/llmath/llvector4a.h b/indra/llmath/llvector4a.h index 596082509d..79d0a44551 100644..100755 --- a/indra/llmath/llvector4a.h +++ b/indra/llmath/llvector4a.h @@ -32,6 +32,7 @@ class LLRotation; #include <assert.h> #include "llpreprocessor.h" +#include "llmemory.h" /////////////////////////////////// // FIRST TIME USERS PLEASE READ @@ -45,7 +46,9 @@ class LLRotation; // of this writing, July 08, 2010) about getting it implemented before you resort to // LLVector3/LLVector4. ///////////////////////////////// +class LLVector4a; +LL_ALIGN_PREFIX(16) class LLVector4a { public: @@ -82,6 +85,7 @@ public: } // Copy words 16-byte blocks from src to dst. Source and destination must not overlap. + // Source and dest must be 16-byte aligned and size must be multiple of 16. static void memcpyNonAliased16(F32* __restrict dst, const F32* __restrict src, size_t bytes); //////////////////////////////////// @@ -90,6 +94,7 @@ public: LLVector4a() { //DO NOT INITIALIZE -- The overhead is completely unnecessary + ll_assert_aligned(this,16); } LLVector4a(F32 x, F32 y, F32 z, F32 w = 0.f) @@ -232,6 +237,11 @@ public: // Note that this does not consider zero length vectors! inline void normalize3fast(); + // Normalize this vector with respect to the x, y, and z components only. Accurate only to 10-12 bits of precision. W component is destroyed + // Same as above except substitutes default vector contents if the vector is non-finite or degenerate due to zero length. + // + inline void normalize3fast_checked(LLVector4a* d = 0); + // Return true if this vector is normalized with respect to x,y,z up to tolerance inline LLBool32 isNormalized3( F32 tolerance = 1e-3 ) const; @@ -313,7 +323,7 @@ public: private: LLQuad mQ; -}; +} LL_ALIGN_POSTFIX(16); inline void update_min_max(LLVector4a& min, LLVector4a& max, const LLVector4a& p) { |