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+/**
+ * @file class3/deferred/waterHazeF.glsl
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, 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
+ * $/LicenseInfo$
+ */
+
+out vec4 frag_color;
+
+// Inputs
+in vec4 vary_fragcoord;
+
+uniform sampler2D normalMap;
+
+vec4 getPositionWithDepth(vec2 pos_screen, float depth);
+float getDepth(vec2 pos_screen);
+
+vec4 getWaterFogView(vec3 pos);
+
+uniform int above_water;
+
+void main()
+{
+ vec2 tc = vary_fragcoord.xy/vary_fragcoord.w*0.5+0.5;
+ float depth = getDepth(tc.xy);
+
+ if (above_water > 0)
+ {
+ // we want to depth test when the camera is above water, but some GPUs have a hard time
+ // with depth testing against render targets that are bound for sampling in the same shader
+ // so we do it manually here
+
+ float cur_depth = vary_fragcoord.z/vary_fragcoord.w*0.5+0.5;
+ if (cur_depth > depth)
+ {
+ discard;
+ }
+ }
+
+ vec4 pos = getPositionWithDepth(tc, depth);
+ vec4 norm = texture(normalMap, tc);
+
+ vec4 fogged = getWaterFogView(pos.xyz);
+
+ frag_color = max(fogged, vec4(0)); //output linear since local lights will be added to this shader's results
+
+}