diff options
Diffstat (limited to 'indra/llmath/llvolume.cpp')
| -rw-r--r-- | indra/llmath/llvolume.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp index 567ad9a414..bd24a46e8d 100644 --- a/indra/llmath/llvolume.cpp +++ b/indra/llmath/llvolume.cpp @@ -2547,7 +2547,7 @@ bool LLVolume::unpackVolumeFaces(std::istream& is, S32 size) U16 influence = weights[idx++]; influence |= ((U16) weights[idx++] << 8); - F32 w = llclamp((F32) influence / 65535.f, 0.f, 0.99999f); + F32 w = llclamp((F32) influence / 65535.f, 0.001f, 0.999f); wght.mV[cur_influence] = w; joints[cur_influence] = joint; cur_influence++; @@ -2564,11 +2564,15 @@ bool LLVolume::unpackVolumeFaces(std::istream& is, S32 size) F32 wsum = wght.mV[VX] + wght.mV[VY] + wght.mV[VZ] + wght.mV[VW]; if (wsum <= 0.f) { - wght = LLVector4(0.99999f,0.f,0.f,0.f); + wght = LLVector4(0.999f,0.f,0.f,0.f); } for (U32 k=0; k<4; k++) { - joints_with_weights[k] = (F32) joints[k] + wght[k]; + F32 f_combined = (F32) joints[k] + wght[k]; + joints_with_weights[k] = f_combined; + // Any weights we added above should wind up non-zero and applied to a specific bone. + // A failure here would indicate a floating point precision error in the math. + llassert((k >= cur_influence) || (f_combined - S32(f_combined) > 0.0f)); } face.mWeights[cur_vertex].loadua(joints_with_weights.mV); |