From b81aadae1b5026195103a5ae20404daf858ded0c Mon Sep 17 00:00:00 2001
From: RunitaiLinden <davep@lindenlab.com>
Date: Tue, 13 Jun 2023 15:36:51 -0500
Subject: [PATCH] SL-19835 Fix for inaccurate water fog on transparent objects
when camera is above water.
---
indra/newview/lldrawpoolalpha.cpp | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/indra/newview/lldrawpoolalpha.cpp b/indra/newview/lldrawpoolalpha.cpp
index 6aa23165896..060129d275d 100644
--- a/indra/newview/lldrawpoolalpha.cpp
+++ b/indra/newview/lldrawpoolalpha.cpp
@@ -243,11 +243,13 @@ void LLDrawPoolAlpha::forwardRender(bool rigged)
//enable writing to alpha for emissive effects
gGL.setColorMask(true, true);
- bool write_depth = rigged ||
+ bool write_depth = rigged ||
LLDrawPoolWater::sSkipScreenCopy
// we want depth written so that rendered alpha will
// contribute to the alpha mask used for impostors
- || LLPipeline::sImpostorRenderAlphaDepthPass;
+ || LLPipeline::sImpostorRenderAlphaDepthPass
+ || getType() == LLDrawPoolAlpha::POOL_ALPHA_PRE_WATER; // needed for accurate water fog
+
LLGLDepthTest depth(GL_TRUE, write_depth ? GL_TRUE : GL_FALSE);
--
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