From e7474eb48d3f5627a781cc25c96d721aa08b9629 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 27 Jul 2011 00:25:45 -0500
Subject: [PATCH] SH-2120 Better fix for water being very dark when basic
shaders disabled (sinA might be negative)
---
indra/newview/llvosky.cpp | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/indra/newview/llvosky.cpp b/indra/newview/llvosky.cpp
index 3a94b03a84d..ef21e7373e4 100644
--- a/indra/newview/llvosky.cpp
+++ b/indra/newview/llvosky.cpp
@@ -754,7 +754,12 @@ void LLVOSky::calcSkyColorWLVert(LLVector3 & Pn, LLColor3 & vary_HazeColor, LLCo
{
// project the direction ray onto the sky dome.
F32 phi = acos(Pn[1]);
- F32 sinA = llmax(sin(F_PI - phi), 0.01f);
+ F32 sinA = sin(F_PI - phi);
+ if (fabsf(sinA) < 0.01f)
+ { //avoid division by zero
+ sinA = 0.01f;
+ }
+
F32 Plen = dome_radius * sin(F_PI + phi + asin(dome_offset_ratio * sinA)) / sinA;
Pn *= Plen;
--
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