From 126582e0f6b3cf568664db6f3bc771084fa4a90b Mon Sep 17 00:00:00 2001
From: Beq <BeqJanus@vcs.firestormviewer.org>
Date: Sat, 16 Apr 2022 01:36:05 +0100
Subject: [PATCH] don't render invisible stuff.

---
 indra/newview/llvovolume.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 63ab827303..8fa0913702 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -6586,6 +6586,14 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
 		LLFace* facep = *face_iter;
 		LLViewerTexture* tex = facep->getTexture();
         const LLTextureEntry* te = facep->getTextureEntry();
+		// <FS:Beq> Don't batch fully transparent faces
+		if (te && ( te->getAlpha() == 0.f ) && ( te->getGlow() == 0.0 ) && !LLDrawPoolAlpha::sShowDebugAlpha)
+		{
+			facep->setSize(0,0);
+			++face_iter;
+			continue;
+		}
+		// </FS:Beq>
 		LLMaterialPtr mat = te->getMaterialParams();
         LLMaterialID matId = te->getMaterialID();