1 files changed, 59 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/gbufferUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/gbufferUtil.glsl
new file mode 100644
index 0000000000..1ccc6e9fbc
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/gbufferUtil.glsl
@@ -0,0 +1,59 @@
+/**
+ * @file class1/deferred/gbufferUtil.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, 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
+ * $/LicenseInfo$
+ */
+
+uniform sampler2D diffuseRect;
+uniform sampler2D specularRect;
+
+#if defined(HAS_EMISSIVE)
+uniform sampler2D emissiveRect;
+#endif
+
+vec4 getNormRaw(vec2 screenpos);
+vec4 decodeNormal(vec4 norm);
+
+GBufferInfo getGBuffer(vec2 screenpos)
+{
+    GBufferInfo ret;
+    vec4 diffInfo = vec4(0);
+    vec4 specInfo = vec4(0);
+    vec4 emissInfo = vec4(0);
+
+    diffInfo = texture(diffuseRect, screenpos.xy);
+    specInfo = texture(specularRect, screenpos.xy);
+    vec4 normInfo = getNormRaw(screenpos);
+
+#if defined(HAS_EMISSIVE)
+    emissInfo = texture(emissiveRect, screenpos.xy);
+#endif
+
+    ret.albedo = diffInfo;
+    ret.normal = decodeNormal(normInfo).xyz;
+    ret.specular = specInfo;
+    ret.envIntensity = normInfo.b;
+    ret.gbufferFlag = normInfo.w;
+    ret.emissive = emissInfo;
+
+    return ret;
+}