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diff --git a/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl b/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl
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+/**
+ * @file WLCloudsF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+
+
+
+/////////////////////////////////////////////////////////////////////////
+// The fragment shader for the sky
+/////////////////////////////////////////////////////////////////////////
+
+varying vec4 vary_CloudColorSun;
+varying vec4 vary_CloudColorAmbient;
+varying float vary_CloudDensity;
+
+uniform sampler2D cloud_noise_texture;
+uniform vec4 cloud_pos_density1;
+uniform vec4 cloud_pos_density2;
+uniform vec4 gamma;
+
+/// Soft clips the light with a gamma correction
+vec3 scaleSoftClip(vec3 light) {
+ //soft clip effect:
+ light = 1. - clamp(light, vec3(0.), vec3(1.));
+ light = 1. - pow(light, gamma.xxx);
+
+ return light;
+}
+
+void main()
+{
+ // Set variables
+ vec2 uv1 = gl_TexCoord[0].xy;
+ vec2 uv2 = gl_TexCoord[1].xy;
+
+ vec4 cloudColorSun = vary_CloudColorSun;
+ vec4 cloudColorAmbient = vary_CloudColorAmbient;
+ float cloudDensity = vary_CloudDensity;
+ vec2 uv3 = gl_TexCoord[2].xy;
+ vec2 uv4 = gl_TexCoord[3].xy;
+
+ // Offset texture coords
+ uv1 += cloud_pos_density1.xy; //large texture, visible density
+ uv2 += cloud_pos_density1.xy; //large texture, self shadow
+ uv3 += cloud_pos_density2.xy; //small texture, visible density
+ uv4 += cloud_pos_density2.xy; //small texture, self shadow
+
+
+ // Compute alpha1, the main cloud opacity
+ float alpha1 = (texture2D(cloud_noise_texture, uv1).x - 0.5) + (texture2D(cloud_noise_texture, uv3).x - 0.5) * cloud_pos_density2.z;
+ alpha1 = min(max(alpha1 + cloudDensity, 0.) * 10. * cloud_pos_density1.z, 1.);
+
+ // And smooth
+ alpha1 = 1. - alpha1 * alpha1;
+ alpha1 = 1. - alpha1 * alpha1;
+
+
+ // Compute alpha2, for self shadowing effect
+ // (1 - alpha2) will later be used as percentage of incoming sunlight
+ float alpha2 = (texture2D(cloud_noise_texture, uv2).x - 0.5);
+ alpha2 = min(max(alpha2 + cloudDensity, 0.) * 2.5 * cloud_pos_density1.z, 1.);
+
+ // And smooth
+ alpha2 = 1. - alpha2;
+ alpha2 = 1. - alpha2 * alpha2;
+
+ // Combine
+ vec4 color;
+ color = (cloudColorSun*(1.-alpha2) + cloudColorAmbient);
+ color *= 2.;
+
+ /// Gamma correct for WL (soft clip effect).
+ gl_FragData[0] = vec4(scaleSoftClip(color.rgb), alpha1);
+ gl_FragData[1] = vec4(0.0,0.0,0.0,0.0);
+ gl_FragData[2] = vec4(0,0,1,0);
+}
+