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diff --git a/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class3/deferred/skyF.glsl
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-/**
- * @file class3/deferred/skyF.glsl
- *
- * $LicenseInfo:firstyear=2005&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2005, 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
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_data[3];
-#else
-#define frag_data gl_FragData
-#endif
-
-VARYING vec2 vary_frag;
-
-uniform vec3 camPosLocal;
-uniform vec3 sun_dir;
-uniform float sun_size;
-uniform float far_z;
-uniform mat4 inv_proj;
-uniform mat4 inv_modelview;
-
-uniform sampler2D transmittance_texture;
-uniform sampler3D scattering_texture;
-uniform sampler3D single_mie_scattering_texture;
-uniform sampler2D irradiance_texture;
-uniform sampler2D rainbow_map;
-uniform sampler2D halo_map;
-
-uniform float moisture_level;
-uniform float droplet_radius;
-uniform float ice_level;
-
-vec3 GetSolarLuminance();
-vec3 GetSkyLuminance(vec3 camPos, vec3 view_dir, float shadow_length, vec3 dir, out vec3 transmittance);
-vec3 GetSkyLuminanceToPoint(vec3 camPos, vec3 pos, float shadow_length, vec3 dir, out vec3 transmittance);
-
-vec3 ColorFromRadiance(vec3 radiance);
-vec3 rainbow(float d)
-{
- // d is the dot product of view and sun directions, so ranging -1.0..1.0
- // 'interesting' values of d are the range -0.75..-0.825, when view is nearly opposite of sun vec
- // Rainbox texture mode is GL_REPEAT, so tc of -.75 is equiv to 0.25, -0.825 equiv to 0.175.
-
- // SL-13629 Rainbow texture has colors within the correct .175...250 range, but order is inverted.
- // Rather than replace the texture, we mirror and translate the y tc to keep the colors within the
- // interesting range, but in reversed order: i.e. d = (1 - d) - 1.575
- d = clamp(-0.575 - d, 0.0, 1.0);
-
- // With the colors in the lower 1/4 of the texture, inverting the coords leaves most of it inaccessible.
- // So, we can stretch the texcoord above the colors (ie > 0.25) to fill the entire remaining coordinate
- // space. This improves gradation, reduces banding within the rainbow interior. (1-0.25) / (0.425/0.25) = 4.2857
- float interior_coord = max(0.0, d - 0.25) * 4.2857;
- d = clamp(d, 0.0, 0.25) + interior_coord;
-
- float rad = (droplet_radius - 5.0f) / 1024.0f;
- return pow(texture2D(rainbow_map, vec2(rad, d)).rgb, vec3(1.8)) * moisture_level;
-}
-
-vec3 halo22(float d)
-{
- float v = sqrt(max(0, 1 - (d*d)));
- return texture2D(halo_map, vec2(0, v)).rgb * ice_level;
-}
-
-void main()
-{
- vec3 pos = vec3((vary_frag * 2.0) - vec2(1.0, 1.0f), 1.0);
- vec4 view_pos = (inv_proj * vec4(pos, 1.0f));
-
- view_pos /= view_pos.w;
-
- vec3 view_ray = (inv_modelview * vec4(view_pos.xyz, 0.0f)).xyz + camPosLocal;
-
- vec3 view_direction = normalize(view_ray);
- vec3 sun_direction = normalize(sun_dir);
- vec3 earth_center = vec3(0, 0, -6360.0f);
- vec3 camPos = (camPosLocal / 1000.0f) - earth_center;
-
- vec3 transmittance;
- vec3 radiance_sun = GetSkyLuminance(camPos, view_direction, 0.0f, sun_direction, transmittance);
- vec3 solar_luminance = GetSolarLuminance();
-
- // If the view ray intersects the Sun, add the Sun radiance.
- float s = dot(view_direction, sun_direction);
-
- // cheesy solar disc...
- if (s >= (sun_size * 0.999))
- {
- radiance_sun += pow(smoothstep(0.0, 1.3, (s - (sun_size * 0.9))), 2.0) * solar_luminance * transmittance;
- }
- s = smoothstep(0.9, 1.0, s) * 16.0f;
-
- vec3 color = ColorFromRadiance(radiance_sun);
-
- float optic_d = dot(view_direction, sun_direction);
- vec3 halo_22 = halo22(optic_d);
-
- color.rgb += rainbow(optic_d) * optic_d;
- color.rgb += halo_22;
-
- color = pow(color, vec3(1.0/2.2));
-
- frag_data[0] = vec4(color, 1.0 + s);
- frag_data[1] = vec4(0.0);
- frag_data[2] = vec4(0.0, 1.0, 0.0, 1.0);
-}
-