From 93260cfeff2382dd1ffeecaef208d37bf21c2a01 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 4 May 2022 16:07:50 +0000
Subject: SL-17283 LLReflectionMapManager prototype.  Remove snapshot code
 related overhead from reflection map renders.  Add parallax correction and
 support for multiple reflection maps.

---
 indra/newview/llreflectionmap.cpp | 64 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 indra/newview/llreflectionmap.cpp

(limited to 'indra/newview/llreflectionmap.cpp')

diff --git a/indra/newview/llreflectionmap.cpp b/indra/newview/llreflectionmap.cpp
new file mode 100644
index 0000000000..b75dba877e
--- /dev/null
+++ b/indra/newview/llreflectionmap.cpp
@@ -0,0 +1,64 @@
+/**
+ * @file llreflectionmap.cpp
+ * @brief LLReflectionMap class implementation
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llreflectionmap.h"
+#include "pipeline.h"
+#include "llviewerwindow.h"
+
+LLReflectionMap::LLReflectionMap()
+{
+}
+
+void LLReflectionMap::update(const LLVector3& origin, U32 resolution)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY;
+    llassert(LLPipeline::sRenderDeferred);
+
+    // make sure resolution is < gPipeline.mDeferredScreen.getWidth()
+
+    while (resolution > gPipeline.mDeferredScreen.getWidth() ||
+        resolution > gPipeline.mDeferredScreen.getHeight())
+    {
+        resolution /= 2;
+    }
+
+    if (resolution == 0)
+    {
+        return;
+    }
+
+    mOrigin.load3(origin.mV);
+
+    mCubeMap = new LLCubeMap(false);
+    mCubeMap->initReflectionMap(resolution);
+
+    gViewerWindow->cubeSnapshot(origin, mCubeMap);
+
+    mCubeMap->generateMipMaps();
+}
+
-- 
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