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-rw-r--r--indra/newview/llvosky.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/indra/newview/llvosky.cpp b/indra/newview/llvosky.cpp
index 66ba6249d3..3a94b03a84 100644
--- a/indra/newview/llvosky.cpp
+++ b/indra/newview/llvosky.cpp
@@ -754,7 +754,7 @@ void LLVOSky::calcSkyColorWLVert(LLVector3 & Pn, LLColor3 & vary_HazeColor, LLCo
{
// project the direction ray onto the sky dome.
F32 phi = acos(Pn[1]);
- F32 sinA = sin(F_PI - phi);
+ F32 sinA = llmax(sin(F_PI - phi), 0.01f);
F32 Plen = dome_radius * sin(F_PI + phi + asin(dome_offset_ratio * sinA)) / sinA;
Pn *= Plen;