diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index 7e1556ecb5..cea9fa4150 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -452,9 +452,11 @@ vec3 fullbrightScaleSoftClip(vec3 light)
 
 void main() 
 {
-	vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
-	frag *= screen_res;
-	
+	// <FS> Fix impostors failing to render with alpha correctly
+	//vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
+	//frag *= screen_res;
+	// </FS>
+
 	vec4 pos = vec4(vary_position, 1.0);
 	
 	float shadow = 1.0;
@@ -532,10 +534,12 @@ void main()
 	vec4 diff = texture2D(diffuseMap,vary_texcoord0.xy);
 #endif
 
-#ifdef FOR_IMPOSTOR
-	vec4 color;
-	color.rgb = diff.rgb;
-	color.a = 1.0;
+// <FS> Fix impostors failing to render with alpha correctly
+//#ifdef FOR_IMPOSTOR
+//	vec4 color;
+//	color.rgb = diff.rgb;
+//	color.a = 1.0;
+// </FS>
 
 #ifdef USE_VERTEX_COLOR
 	float final_alpha = diff.a * vertex_color.a;
@@ -543,6 +547,10 @@ void main()
 #else
 	float final_alpha = diff.a;
 #endif
+// <FS> Fix impostors failing to render with alpha correctly
+#ifdef FOR_IMPOSTOR
+	vec4 color = vec4(diff.rgb,final_alpha);
+// </FS>
 	
 	// Insure we don't pollute depth with invis pixels in impostor rendering
 	//
@@ -551,14 +559,15 @@ void main()
 		discard;
 	}
 #else
-	
-#ifdef USE_VERTEX_COLOR
-	float final_alpha = diff.a * vertex_color.a;
-	diff.rgb *= vertex_color.rgb;
-#else
-	float final_alpha = diff.a;
-#endif
 
+// <FS> Fix impostors failing to render with alpha correctly
+//#ifdef USE_VERTEX_COLOR
+//	float final_alpha = diff.a * vertex_color.a;
+//	diff.rgb *= vertex_color.rgb;
+//#else
+//	float final_alpha = diff.a;
+//#endif
+// </FS>
 
 	vec4 gamma_diff = diff;	
 	diff.rgb = srgb_to_linear(diff.rgb);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarV.glsl
index 1bd8fee7c9..d3b1c87084 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarV.glsl
@@ -28,6 +28,7 @@ uniform mat4 projection_matrix;
 ATTRIBUTE vec3 position;
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec2 texcoord0;
+ATTRIBUTE vec4 clothing; 
 
 mat4 getSkinnedTransform();
 
@@ -36,6 +37,15 @@ ATTRIBUTE vec4 weight;
 VARYING vec3 vary_normal;
 VARYING vec2 vary_texcoord0;
 
+// <FS> Fix avatar cloth failing to work in deferred
+uniform vec4 gWindDir;
+uniform vec4 gSinWaveParams;
+uniform vec4 gGravity;
+
+const vec4 gMinMaxConstants = vec4(1.0, 0.166666, 0.0083143, .00018542);	 // #minimax-generated coefficients
+const vec4 gPiConstants	= vec4(0.159154943, 6.28318530, 3.141592653, 1.5707963); //	# {1/2PI, 2PI, PI, PI/2}
+// </FS>
+
 void main()
 {
 	vary_texcoord0 = texcoord0;
@@ -45,16 +55,86 @@ void main()
 	
 	vec4 pos_in = vec4(position.xyz, 1.0);
 	mat4 trans = getSkinnedTransform();
-	pos.x = dot(trans[0], pos_in);
-	pos.y = dot(trans[1], pos_in);
-	pos.z = dot(trans[2], pos_in);
-	pos.w = 1.0;
+	// <FS> Fix avatar cloth failing to work in deferred
+	//pos.x = dot(trans[0], pos_in);
+	//pos.y = dot(trans[1], pos_in);
+	//pos.z = dot(trans[2], pos_in);
+	//pos.w = 1.0;
+	// </FS>
 	
 	norm.x = dot(trans[0].xyz, normal);
 	norm.y = dot(trans[1].xyz, normal);
 	norm.z = dot(trans[2].xyz, normal);
 	norm = normalize(norm);
 	
+// <FS> Fix avatar cloth failing to work in deferred
+#if AVATAR_CLOTH
+	//wind
+	vec4 windEffect;
+	windEffect = vec4(dot(norm, gWindDir.xyz));	
+	pos.x = dot(trans[2], pos_in);
+	windEffect.xyz = pos.x * vec3(0.015, 0.015, 0.015)
+						+ windEffect.xyz;
+	windEffect.w = windEffect.w * 2.0 + 1.0;				// move wind offset value to [-1, 3]
+	windEffect.w = windEffect.w*gWindDir.w;					// modulate wind strength 
+	
+	windEffect.xyz = windEffect.xyz*gSinWaveParams.xyz
+						+vec3(gSinWaveParams.w);			// use sin wave params to scale and offset input
+
+	//reduce to period of 2 PI
+	vec4 temp1, temp0, temp2, offsetPos;
+	temp1.xyz = windEffect.xyz * gPiConstants.x;			// change input as multiple of [0-2PI] to [0-1]
+	temp0.y = mod(temp1.x,1.0);	
+	windEffect.x = temp0.y * gPiConstants.y;				// scale from [0,1] to [0, 2PI]
+	temp1.z = temp1.z - gPiConstants.w;						// shift normal oscillation by PI/2
+	temp0.y = mod(temp1.z,1.0);
+	
+	windEffect.z = temp0.y * gPiConstants.y;				// scale from [0,1] to [0, 2PI]
+	windEffect.xyz = windEffect.xyz + vec3(-3.141592);		// offset to [-PI, PI]
+
+	//calculate sinusoid
+	vec4 sinWave;
+	temp1 = windEffect*windEffect;
+	sinWave = -temp1 * gMinMaxConstants.w 
+				+ vec4(gMinMaxConstants.z);					// y = -(x^2)/7! + 1/5!
+	sinWave = sinWave * -temp1 + vec4(gMinMaxConstants.y);	// y = -(x^2) * (-(x^2)/7! + 1/5!) + 1/3!
+	sinWave = sinWave * -temp1 + vec4(gMinMaxConstants.x);	// y = -(x^2) * (-(x^2) * (-(x^2)/7! + 1/5!) + 1/3!) + 1
+	sinWave = sinWave * windEffect;							// y = x * (-(x^2) * (-(x^2) * (-(x^2)/7! + 1/5!) + 1/3!) + 1)
+	
+	// sinWave.x holds sin(norm . wind_direction) with primary frequency
+	// sinWave.y holds sin(norm . wind_direction) with secondary frequency
+	// sinWave.z hold cos(norm . wind_direction) with primary frequency
+	sinWave.xyz = sinWave.xyz * gWindDir.w 
+				+ vec3(windEffect.w);						// multiply by wind strength in gWindDir.w [-wind, wind]
+
+	// add normal facing bias offset [-wind,wind] -> [-wind - .25, wind + 1]
+	temp1 = vec4(dot(norm, gGravity.xyz));					// how much is this normal facing in direction of gGravity?
+	temp1 = min(temp1, vec4(0.2,0.0,0.0,0.0));				// clamp [-1, 1] to [-1, 0.2]
+	temp1 = temp1*vec4(1.5,0.0,0.0,0.0);					// scale from [-1,0.2] to [-1.5, 0.3]
+	sinWave.x = sinWave.x + temp1.x;						// add gGravity effect to sinwave (only primary frequency)
+	sinWave.xyz = sinWave.xyz * clothing.w;					// modulate by clothing coverage
+	
+	sinWave.xyz = max(sinWave.xyz, vec3(-1.0, -1.0, -1.0));	// clamp to underlying body shape
+	offsetPos = clothing * sinWave.x;						// multiply wind effect times clothing displacement
+	temp2 = gWindDir*sinWave.z + vec4(norm,0);				// calculate normal offset due to wind oscillation
+	offsetPos = vec4(1.0,1.0,1.0,0.0)*offsetPos+pos_in;		// add to offset vertex position, and zero out effect from w
+	norm += temp2.xyz*2.0;									// add sin wave effect on normals (exaggerated)
+
+	//renormalize normal (again)
+	norm = normalize(norm);
+
+	pos.x = dot(trans[0], offsetPos);
+	pos.y = dot(trans[1], offsetPos);
+	pos.z = dot(trans[2], offsetPos);
+	pos.w = 1.0;
+#else
+	pos.x = dot(trans[0], pos_in);
+	pos.y = dot(trans[1], pos_in);
+	pos.z = dot(trans[2], pos_in);
+	pos.w = 1.0;
+#endif
+// </FS>
+
 	vary_normal = norm;
 	
 	gl_Position = projection_matrix * pos;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index 830dc8af57..9fe89bdf31 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -40,6 +40,10 @@ VARYING vec3 vary_position;
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
 
+// <FS> Fix fullbright fog failing
+vec3 fullbrightAtmosTransport(vec3 light);
+vec3 fullbrightScaleSoftClip(vec3 light);
+// </FS>
 
 vec3 srgb_to_linear(vec3 cs)
 {
@@ -78,16 +82,18 @@ vec3 linear_to_srgb(vec3 cl)
 
 }
 
-vec3 fullbrightAtmosTransportDeferred(vec3 light)
-{
-	return light;
-}
+// <FS> Fix fullbright fog failing
+//vec3 fullbrightAtmosTransportDeferred(vec3 light)
+//{
+//	return light;
+//}
 
-vec3 fullbrightScaleSoftClipDeferred(vec3 light)
-{
-	//soft clip effect:
-	return light;
-}
+//vec3 fullbrightScaleSoftClipDeferred(vec3 light)
+//{
+//	//soft clip effect:
+//	return light;
+//}
+// </FS>
 
 #ifdef HAS_ALPHA_MASK
 uniform float minimum_alpha;
@@ -157,22 +163,32 @@ void main()
 #endif
 
 	color.rgb *= vertex_color.rgb;
-	color.rgb = srgb_to_linear(color.rgb);
-	color.rgb = fullbrightAtmosTransportDeferred(color.rgb);
-	color.rgb = fullbrightScaleSoftClipDeferred(color.rgb);
+	// <FS> Fix fullbright fog failing
+	//color.rgb = srgb_to_linear(color.rgb);
+	//color.rgb = fullbrightAtmosTransportDeferred(color.rgb);
+	//color.rgb = fullbrightScaleSoftClipDeferred(color.rgb);
 	
-	color.rgb = linear_to_srgb(color.rgb);
+	//color.rgb = linear_to_srgb(color.rgb);
+	color.rgb = fullbrightAtmosTransport(color.rgb);
+	color.rgb = fullbrightScaleSoftClip(color.rgb);
+	// </FS>
 
 #ifdef WATER_FOG
 	vec3 pos = vary_position;
-	vec4 fogged = applyWaterFogDeferred(pos, vec4(color.rgb, final_alpha));
-	color.rgb = fogged.rgb;
-	color.a   = fogged.a;
+	// <FS> Fix fullbright fog failing
+	//vec4 fogged = applyWaterFogDeferred(pos, vec4(color.rgb, final_alpha));
+	//color.rgb = fogged.rgb;
+	//color.a   = fogged.a;
+	color = applyWaterFogDeferred(pos, vec4(color.rgb, final_alpha));
+	// </FS>
 #else
 	color.a   = final_alpha;
 #endif
 
-	frag_color.rgb = color.rgb;
-	frag_color.a   = color.a;
+	// <FS> Fix fullbright fog failing
+	//frag_color.rgb = color.rgb;
+	//frag_color.a   = color.a;
+	frag_color = color;
+	// </FS>
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/underWaterF.glsl b/indra/newview/app_settings/shaders/class1/deferred/underWaterF.glsl
index 78f841c733..4362414e14 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/underWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/underWaterF.glsl
@@ -151,7 +151,10 @@ void main()
 		
 	vec4 fb = texture2D(screenTex, distort);
 
-	frag_data[0] = vec4(linear_to_srgb(fb.rgb), 1.0); // diffuse
+	// <FS> Fix gamma in underwater
+	//frag_data[0] = vec4(linear_to_srgb(fb.rgb), 1.0); // diffuse
+	frag_data[0] = vec4(fb.rgb, 1.0); // diffuse
+	// </FS>
 	frag_data[1] = vec4(0.5,0.5,0.5, 0.95); // speccolor*spec, spec
 	frag_data[2] = vec4(encode_normal(wavef), 0.0, 0.0); // normalxyz, displace
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
index a2b193de4d..c6475b10cb 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/waterF.glsl
@@ -197,7 +197,10 @@ void main()
 
 	vec3 screenspacewavef = normalize((norm_mat*vec4(wavef, 1.0)).xyz);
 	
-	frag_data[0] = vec4(color.rgb, color); // diffuse
+	// <FS> Fix weird water glow on edge of land due to broken alpha value
+	//frag_data[0] = vec4(color.rgb, color); // diffuse
+	frag_data[0] = vec4(color.rgb, color.a); // diffuse
+	// </FS>
 	frag_data[1] = vec4(0);		// speccolor, spec
 	frag_data[2] = vec4(encode_normal(screenspacewavef.xyz*0.5+0.5), 0.05, 0);// normalxy, 0, 0
 }
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index a8c0571d0b..789f5dc8ec 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -1882,6 +1882,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAvatarProgram.mShaderFiles.clear();
 		gDeferredAvatarProgram.mShaderFiles.push_back(make_pair("deferred/avatarV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredAvatarProgram.mShaderFiles.push_back(make_pair("deferred/avatarF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredAvatarProgram.addPermutation("AVATAR_CLOTH", (mVertexShaderLevel[SHADER_AVATAR] == 3) ? "1" : "0"); // <FS> Fix avatar cloth failing to work in deferred
 		gDeferredAvatarProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredAvatarProgram.createShader(NULL, NULL);
 	}