SH-469 WIP -- get rid of LLMultiSampleBuffer and use GL_ARB_texture_multisample instead.

20 files changed, 1849 insertions, 91 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/blurLightMSF.glsl b/indra/newview/app_settings/shaders/class1/deferred/blurLightMSF.glsl
new file mode 100644
index 0000000000..113197c871
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/blurLightMSF.glsl
@@ -0,0 +1,102 @@
+/** 
+ * @file blurLightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+uniform sampler2DMS depthMap;
+uniform sampler2DMS normalMap;
+uniform sampler2DMS lightMap;
+
+uniform float dist_factor;
+uniform float blur_size;
+uniform vec2 delta;
+uniform vec3 kern[4];
+uniform float kern_scale;
+
+varying vec2 vary_fragcoord;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+vec4 texture2DMS(sampler2DMS tex, ivec2 tc)
+{
+	vec4 ret = vec4(0,0,0,0);
+	for (int i = 0; i < 4; i++)
+	{
+		ret += texelFetch(tex, tc, i);
+	}
+
+	return ret * 0.25;
+}
+
+vec4 getPosition(ivec2 pos_screen)
+{
+	float depth = texture2DMS(depthMap, pos_screen.xy).r;
+	vec2 sc = pos_screen.xy*2.0;
+	sc /= screen_res;
+	sc -= vec2(1.0,1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = inv_proj * ndc;
+	pos /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+void main() 
+{
+    vec2 tc = vary_fragcoord.xy;
+	ivec2 itc = ivec2(tc);
+
+	vec3 norm = texture2DMS(normalMap, itc).xyz;
+	norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+	vec3 pos = getPosition(itc).xyz;
+	vec4 ccol = texture2DMS(lightMap, itc).rgba;
+	
+	vec2 dlt = kern_scale * delta / (1.0+norm.xy*norm.xy);
+	dlt /= max(-pos.z*dist_factor, 1.0);
+	
+	vec2 defined_weight = kern[0].xy; // special case the first (centre) sample's weight in the blur; we have to sample it anyway so we get it for 'free'
+	vec4 col = defined_weight.xyxx * ccol;
+
+	// relax tolerance according to distance to avoid speckling artifacts, as angles and distances are a lot more abrupt within a small screen area at larger distances
+	float pointplanedist_tolerance_pow2 = pos.z*pos.z*0.00005;
+
+	// perturb sampling origin slightly in screen-space to hide edge-ghosting artifacts where smoothing radius is quite large
+	tc += ( (mod(tc.x+tc.y,2) - 0.5) * kern[1].z * dlt * 0.5 );
+
+	for (int i = 1; i < 4; i++)
+	{
+		ivec2 samptc = ivec2(tc + kern[i].z*dlt);
+		vec3 samppos = getPosition(samptc).xyz; 
+		float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
+		if (d*d <= pointplanedist_tolerance_pow2)
+		{
+			col += texture2DMS(lightMap, samptc)*kern[i].xyxx;
+			defined_weight += kern[i].xy;
+		}
+	}
+	for (int i = 1; i < 4; i++)
+	{
+		ivec2 samptc = ivec2(tc - kern[i].z*dlt);
+		vec3 samppos = getPosition(samptc).xyz; 
+		float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
+		if (d*d <= pointplanedist_tolerance_pow2)
+		{
+			col += texture2DMS(lightMap, samptc)*kern[i].xyxx;
+			defined_weight += kern[i].xy;
+		}
+	}
+
+	col /= defined_weight.xyxx;
+	col.y *= col.y;
+
+	gl_FragColor = col;
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl b/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl
new file mode 100644
index 0000000000..9e551fa976
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/cloudsF.glsl
@@ -0,0 +1,79 @@
+/** 
+ * @file WLCloudsF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+/////////////////////////////////////////////////////////////////////////
+// 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);
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
new file mode 100644
index 0000000000..267ef36d4d
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
@@ -0,0 +1,165 @@
+/** 
+ * @file WLCloudsV.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+//////////////////////////////////////////////////////////////////////////
+// The vertex shader for creating the atmospheric sky
+///////////////////////////////////////////////////////////////////////////////
+
+// Output parameters
+varying vec4 vary_CloudColorSun;
+varying vec4 vary_CloudColorAmbient;
+varying float vary_CloudDensity;
+
+// Inputs
+uniform vec3 camPosLocal;
+
+uniform vec4 lightnorm;
+uniform vec4 sunlight_color;
+uniform vec4 ambient;
+uniform vec4 blue_horizon;
+uniform vec4 blue_density;
+uniform vec4 haze_horizon;
+uniform vec4 haze_density;
+
+uniform vec4 cloud_shadow;
+uniform vec4 density_multiplier;
+uniform vec4 max_y;
+
+uniform vec4 glow;
+
+uniform vec4 cloud_color;
+
+uniform vec4 cloud_scale;
+
+void main()
+{
+
+	// World / view / projection
+	gl_Position = ftransform();
+
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+
+	// Get relative position
+	vec3 P = gl_Vertex.xyz - camPosLocal.xyz + vec3(0,50,0);
+
+	// Set altitude
+	if (P.y > 0.)
+	{
+		P *= (max_y.x / P.y);
+	}
+	else
+	{
+		P *= (-32000. / P.y);
+	}
+
+	// Can normalize then
+	vec3 Pn = normalize(P);
+	float  Plen = length(P);
+
+	// Initialize temp variables
+	vec4 temp1 = vec4(0.);
+	vec4 temp2 = vec4(0.);
+	vec4 blue_weight;
+	vec4 haze_weight;
+	vec4 sunlight = sunlight_color;
+	vec4 light_atten;
+
+
+	// Sunlight attenuation effect (hue and brightness) due to atmosphere
+	// this is used later for sunlight modulation at various altitudes
+	light_atten = (blue_density * 1.0 + haze_density.x * 0.25) * (density_multiplier.x * max_y.x);
+
+	// Calculate relative weights
+	temp1 = blue_density + haze_density.x;
+	blue_weight = blue_density / temp1;
+	haze_weight = haze_density.x / temp1;
+
+	// Compute sunlight from P & lightnorm (for long rays like sky)
+	temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
+	temp2.y = 1. / temp2.y;
+	sunlight *= exp( - light_atten * temp2.y);
+
+	// Distance
+	temp2.z = Plen * density_multiplier.x;
+
+	// Transparency (-> temp1)
+	// ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
+	// compiler gets confused.
+	temp1 = exp(-temp1 * temp2.z);
+
+
+	// Compute haze glow
+	temp2.x = dot(Pn, lightnorm.xyz);
+	temp2.x = 1. - temp2.x;
+		// temp2.x is 0 at the sun and increases away from sun
+	temp2.x = max(temp2.x, .001);	
+		// Set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
+	temp2.x *= glow.x;
+		// Higher glow.x gives dimmer glow (because next step is 1 / "angle")
+	temp2.x = pow(temp2.x, glow.z);
+		// glow.z should be negative, so we're doing a sort of (1 / "angle") function
+
+	// Add "minimum anti-solar illumination"
+	temp2.x += .25;
+
+	// Increase ambient when there are more clouds
+	vec4 tmpAmbient = ambient;
+	tmpAmbient += (1. - tmpAmbient) * cloud_shadow.x * 0.5; 
+
+	// Dim sunlight by cloud shadow percentage
+	sunlight *= (1. - cloud_shadow.x);
+
+	// Haze color below cloud
+	vec4 additiveColorBelowCloud = (	  blue_horizon * blue_weight * (sunlight + tmpAmbient)
+				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+			 );	
+
+	// CLOUDS
+
+	sunlight = sunlight_color;
+	temp2.y = max(0., lightnorm.y * 2.);
+	temp2.y = 1. / temp2.y;
+	sunlight *= exp( - light_atten * temp2.y);
+
+	// Cloud color out
+	vary_CloudColorSun = (sunlight * temp2.x) * cloud_color;
+	vary_CloudColorAmbient = tmpAmbient * cloud_color;
+	
+	// Attenuate cloud color by atmosphere
+	temp1 = sqrt(temp1);	//less atmos opacity (more transparency) below clouds
+	vary_CloudColorSun *= temp1;
+	vary_CloudColorAmbient *= temp1;
+	vec4 oHazeColorBelowCloud = additiveColorBelowCloud * (1. - temp1);
+
+	// Make a nice cloud density based on the cloud_shadow value that was passed in.
+	vary_CloudDensity = 2. * (cloud_shadow.x - 0.25);
+
+
+	// Texture coords
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+	gl_TexCoord[0].xy -= 0.5;
+	gl_TexCoord[0].xy /= cloud_scale.x;
+	gl_TexCoord[0].xy += 0.5;
+
+	gl_TexCoord[1] = gl_TexCoord[0];
+	gl_TexCoord[1].x += lightnorm.x * 0.0125;
+	gl_TexCoord[1].y += lightnorm.z * 0.0125;
+
+	gl_TexCoord[2] = gl_TexCoord[0] * 16.;
+	gl_TexCoord[3] = gl_TexCoord[1] * 16.;
+
+	// Combine these to minimize register use
+	vary_CloudColorAmbient += oHazeColorBelowCloud;
+
+	// needs this to compile on mac
+	//vary_AtmosAttenuation = vec3(0.0,0.0,0.0);
+
+	// END CLOUDS
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pointLightMSF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pointLightMSF.glsl
new file mode 100644
index 0000000000..22ed9dcd40
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/pointLightMSF.glsl
@@ -0,0 +1,100 @@
+/** 
+ * @file pointLightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+ #version 120
+
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect diffuseRect;
+uniform sampler2DRect specularRect;
+uniform sampler2DRect normalMap;
+uniform samplerCube environmentMap;
+uniform sampler2D noiseMap;
+uniform sampler2D lightFunc;
+uniform sampler2DRect depthMap;
+
+uniform vec3 env_mat[3];
+uniform float sun_wash;
+
+varying vec4 vary_light;
+
+varying vec4 vary_fragcoord;
+uniform vec2 screen_res;
+
+uniform mat4 inv_proj;
+uniform vec4 viewport;
+
+vec4 getPosition(vec2 pos_screen)
+{
+	float depth = texture2DRect(depthMap, pos_screen.xy).a;
+	vec2 sc = (pos_screen.xy-viewport.xy)*2.0;
+	sc /= viewport.zw;
+	sc -= vec2(1.0,1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = inv_proj * ndc;
+	pos /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+void main() 
+{
+	vec4 frag = vary_fragcoord;
+	frag.xyz /= frag.w;
+	frag.xyz = frag.xyz*0.5+0.5;
+	frag.xy *= screen_res;
+	
+	vec3 pos = getPosition(frag.xy).xyz;
+	vec3 lv = vary_light.xyz-pos;
+	float dist2 = dot(lv,lv);
+	dist2 /= vary_light.w;
+	if (dist2 > 1.0)
+	{
+		discard;
+	}
+	
+	vec3 norm = texture2DRect(normalMap, frag.xy).xyz;
+	norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+	float da = dot(norm, lv);
+	if (da < 0.0)
+	{
+		discard;
+	}
+	
+	norm = normalize(norm);
+	lv = normalize(lv);
+	da = dot(norm, lv);
+	
+	float noise = texture2D(noiseMap, frag.xy/128.0).b;
+	
+	vec3 col = texture2DRect(diffuseRect, frag.xy).rgb;
+	float fa = gl_Color.a+1.0;
+	float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+	float lit = da * dist_atten * noise;
+	
+	col = gl_Color.rgb*lit*col;
+
+	vec4 spec = texture2DRect(specularRect, frag.xy);
+	if (spec.a > 0.0)
+	{
+		float sa = dot(normalize(lv-normalize(pos)),norm);
+		if (sa > 0.0)
+		{
+			sa = texture2D(lightFunc, vec2(sa, spec.a)).a * min(dist_atten*4.0, 1.0);
+			sa *= noise;
+			col += da*sa*gl_Color.rgb*spec.rgb;
+		}
+	}
+	
+	if (dot(col, col) <= 0.0)
+	{
+		discard;
+	}
+		
+	gl_FragColor.rgb = col;	
+	gl_FragColor.a = 0.0;
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredMSF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredMSF.glsl
new file mode 100644
index 0000000000..a34f882c39
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredMSF.glsl
@@ -0,0 +1,133 @@
+/** 
+ * @file postDeferredF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+uniform sampler2DMS diffuseRect;
+uniform sampler2DMS edgeMap;
+uniform sampler2DMS depthMap;
+uniform sampler2DMS normalMap;
+uniform sampler2D bloomMap;
+
+uniform float depth_cutoff;
+uniform float norm_cutoff;
+uniform float focal_distance;
+uniform float blur_constant;
+uniform float tan_pixel_angle;
+uniform float magnification;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+varying vec2 vary_fragcoord;
+
+vec4 texture2DMS(sampler2DMS tex, ivec2 tc)
+{
+	vec4 ret = vec4(0,0,0,0);
+	for (int i = 0; i < 4; ++i)
+	{
+		ret += texelFetch(tex, tc, i);
+	}
+
+	return ret * 0.25;
+}
+
+float getDepth(ivec2 pos_screen)
+{
+	float z = texture2DMS(depthMap, pos_screen.xy).r;
+	z = z*2.0-1.0;
+	vec4 ndc = vec4(0.0, 0.0, z, 1.0);
+	vec4 p = inv_proj*ndc;
+	return p.z/p.w;
+}
+
+float calc_cof(float depth)
+{
+	float sc = abs(depth-focal_distance)/-depth*blur_constant;
+		
+	sc /= magnification;
+	
+	// tan_pixel_angle = pixel_length/-depth;
+	float pixel_length =  tan_pixel_angle*-focal_distance;
+	
+	sc = sc/pixel_length;
+	sc *= 1.414;
+	
+	return sc;
+}
+
+void dofSample(inout vec4 diff, inout float w, float min_sc, float cur_depth, ivec2 tc)
+{
+	float d = getDepth(tc);
+	
+	float sc = calc_cof(d);
+	
+	if (sc > min_sc //sampled pixel is more "out of focus" than current sample radius
+	   || d < cur_depth) //sampled pixel is further away than current pixel
+	{
+		float wg = 0.25;
+		
+		vec4 s = texture2DMS(diffuseRect, tc);
+		// de-weight dull areas to make highlights 'pop'
+		wg += s.r+s.g+s.b;
+	
+		diff += wg*s;
+		
+		w += wg;
+	}
+}
+
+
+void main() 
+{
+	ivec2 itc = ivec2(vary_fragcoord.xy);
+
+	vec3 norm = texture2DMS(normalMap, itc).xyz;
+	norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+		
+	float depth = getDepth(itc);
+	
+	vec4 diff = texture2DMS(diffuseRect, itc);
+	
+	{ 
+		float w = 1.0;
+		
+		float sc = calc_cof(depth);
+		sc = min(abs(sc), 10.0);
+		
+		float fd = depth*0.5f;
+		
+		float PI = 3.14159265358979323846264;
+
+		int isc = int(sc);
+		
+		// sample quite uniformly spaced points within a circle, for a circular 'bokeh'		
+		//if (depth < focal_distance)
+		{
+			for (int x = -isc; x <= isc; x+=2)
+			{
+				for (int y = -isc; y <= isc; y+=2)
+				{
+					ivec2 cur_samp = ivec2(x,y);
+					float cur_sc = length(vec2(cur_samp));
+					if (cur_sc < sc)
+					{
+						dofSample(diff, w, cur_sc, depth, itc+cur_samp);
+					}
+				}
+			}
+		}
+		
+		diff /= w;
+	}
+		
+	vec4 bloom = texture2D(bloomMap, vary_fragcoord.xy/screen_res);
+	gl_FragColor = diff + bloom;
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFMSF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFMSF.glsl
new file mode 100644
index 0000000000..7b14974f8b
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFMSF.glsl
@@ -0,0 +1,36 @@
+/** 
+ * @file postDeferredF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+uniform sampler2DMS diffuseRect;
+uniform sampler2D bloomMap;
+
+uniform vec2 screen_res;
+varying vec2 vary_fragcoord;
+
+vec4 texture2DMS(sampler2DMS tex, ivec2 tc)
+{
+	vec4 ret = texelFetch(tex,tc,0);
+	ret += texelFetch(tex,tc,1);
+	ret += texelFetch(tex,tc,2);
+	ret += texelFetch(tex,tc,3);
+	ret *= 0.25;
+
+	return ret;
+}
+
+void main() 
+{
+	vec4 diff = texture2DMS(diffuseRect, ivec2(vary_fragcoord.xy));
+
+	vec4 bloom = texture2D(bloomMap, vary_fragcoord.xy/screen_res);
+	gl_FragColor = diff + bloom;
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
new file mode 100644
index 0000000000..91143943b6
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
@@ -0,0 +1,44 @@
+/** 
+ * @file WLSkyF.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+/////////////////////////////////////////////////////////////////////////
+// The fragment shader for the sky
+/////////////////////////////////////////////////////////////////////////
+
+varying vec4 vary_HazeColor;
+
+uniform sampler2D cloud_noise_texture;
+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()
+{
+	// Potential Fill-rate optimization.  Add cloud calculation 
+	// back in and output alpha of 0 (so that alpha culling kills 
+	// the fragment) if the sky wouldn't show up because the clouds 
+	// are fully opaque.
+
+	vec4 color;
+	color = vary_HazeColor;
+	color *= 2.;
+
+	/// Gamma correct for WL (soft clip effect).
+	gl_FragData[0] = vec4(scaleSoftClip(color.rgb), 1.0);
+	gl_FragData[1] = vec4(0.0,0.0,0.0,0.0);
+	gl_FragData[2] = vec4(0,0,1,0);
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
new file mode 100644
index 0000000000..03bca8f27e
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
@@ -0,0 +1,140 @@
+/** 
+ * @file WLSkyV.glsl
+ *
+ * $LicenseInfo:firstyear=2005&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+// SKY ////////////////////////////////////////////////////////////////////////
+// The vertex shader for creating the atmospheric sky
+///////////////////////////////////////////////////////////////////////////////
+
+// Output parameters
+varying vec4 vary_HazeColor;
+
+// Inputs
+uniform vec3 camPosLocal;
+
+uniform vec4 lightnorm;
+uniform vec4 sunlight_color;
+uniform vec4 ambient;
+uniform vec4 blue_horizon;
+uniform vec4 blue_density;
+uniform vec4 haze_horizon;
+uniform vec4 haze_density;
+
+uniform vec4 cloud_shadow;
+uniform vec4 density_multiplier;
+uniform vec4 max_y;
+
+uniform vec4 glow;
+
+uniform vec4 cloud_color;
+
+uniform vec4 cloud_scale;
+
+void main()
+{
+
+	// World / view / projection
+	gl_Position = ftransform();
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+
+	// Get relative position
+	vec3 P = gl_Vertex.xyz - camPosLocal.xyz + vec3(0,50,0);
+	//vec3 P = gl_Vertex.xyz + vec3(0,50,0);
+
+	// Set altitude
+	if (P.y > 0.)
+	{
+		P *= (max_y.x / P.y);
+	}
+	else
+	{
+		P *= (-32000. / P.y);
+	}
+
+	// Can normalize then
+	vec3 Pn = normalize(P);
+	float  Plen = length(P);
+
+	// Initialize temp variables
+	vec4 temp1 = vec4(0.);
+	vec4 temp2 = vec4(0.);
+	vec4 blue_weight;
+	vec4 haze_weight;
+	vec4 sunlight = sunlight_color;
+	vec4 light_atten;
+
+
+	// Sunlight attenuation effect (hue and brightness) due to atmosphere
+	// this is used later for sunlight modulation at various altitudes
+	light_atten = (blue_density * 1.0 + haze_density.x * 0.25) * (density_multiplier.x * max_y.x);
+
+	// Calculate relative weights
+	temp1 = blue_density + haze_density.x;
+	blue_weight = blue_density / temp1;
+	haze_weight = haze_density.x / temp1;
+
+	// Compute sunlight from P & lightnorm (for long rays like sky)
+	temp2.y = max(0., max(0., Pn.y) * 1.0 + lightnorm.y );
+	temp2.y = 1. / temp2.y;
+	sunlight *= exp( - light_atten * temp2.y);
+
+	// Distance
+	temp2.z = Plen * density_multiplier.x;
+
+	// Transparency (-> temp1)
+	// ATI Bugfix -- can't store temp1*temp2.z in a variable because the ati
+	// compiler gets confused.
+	temp1 = exp(-temp1 * temp2.z);
+
+
+	// Compute haze glow
+	temp2.x = dot(Pn, lightnorm.xyz);
+	temp2.x = 1. - temp2.x;
+		// temp2.x is 0 at the sun and increases away from sun
+	temp2.x = max(temp2.x, .001);	
+		// Set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
+	temp2.x *= glow.x;
+		// Higher glow.x gives dimmer glow (because next step is 1 / "angle")
+	temp2.x = pow(temp2.x, glow.z);
+		// glow.z should be negative, so we're doing a sort of (1 / "angle") function
+
+	// Add "minimum anti-solar illumination"
+	temp2.x += .25;
+
+
+	// Haze color above cloud
+	vary_HazeColor = (	  blue_horizon * blue_weight * (sunlight + ambient)
+				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + ambient)
+			 );	
+
+
+	// Increase ambient when there are more clouds
+	vec4 tmpAmbient = ambient;
+	tmpAmbient += (1. - tmpAmbient) * cloud_shadow.x * 0.5; 
+
+	// Dim sunlight by cloud shadow percentage
+	sunlight *= (1. - cloud_shadow.x);
+
+	// Haze color below cloud
+	vec4 additiveColorBelowCloud = (	  blue_horizon * blue_weight * (sunlight + tmpAmbient)
+				+ (haze_horizon.r * haze_weight) * (sunlight * temp2.x + tmpAmbient)
+			 );	
+
+	// Final atmosphere additive
+	vary_HazeColor *= (1. - temp1);
+	
+	// Attenuate cloud color by atmosphere
+	temp1 = sqrt(temp1);	//less atmos opacity (more transparency) below clouds
+
+	// At horizon, blend high altitude sky color towards the darker color below the clouds
+	vary_HazeColor += (additiveColorBelowCloud - vary_HazeColor) * (1. - sqrt(temp1));
+	
+	// won't compile on mac without this being set
+	//vary_AtmosAttenuation = vec3(0.0,0.0,0.0);
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightMSF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightMSF.glsl
new file mode 100644
index 0000000000..4c38d91499
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightMSF.glsl
@@ -0,0 +1,318 @@
+/** 
+ * @file softenLightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+uniform sampler2DMS diffuseRect;
+uniform sampler2DMS specularRect;
+uniform sampler2DMS normalMap;
+uniform sampler2DMS depthMap;
+uniform sampler2D	  noiseMap;
+uniform samplerCube environmentMap;
+uniform sampler2D	  lightFunc;
+
+uniform float blur_size;
+uniform float blur_fidelity;
+
+// Inputs
+uniform vec4 morphFactor;
+uniform vec3 camPosLocal;
+//uniform vec4 camPosWorld;
+uniform vec4 gamma;
+uniform vec4 lightnorm;
+uniform vec4 sunlight_color;
+uniform vec4 ambient;
+uniform vec4 blue_horizon;
+uniform vec4 blue_density;
+uniform vec4 haze_horizon;
+uniform vec4 haze_density;
+uniform vec4 cloud_shadow;
+uniform vec4 density_multiplier;
+uniform vec4 distance_multiplier;
+uniform vec4 max_y;
+uniform vec4 glow;
+uniform float scene_light_strength;
+uniform vec3 env_mat[3];
+//uniform mat4 shadow_matrix[3];
+//uniform vec4 shadow_clip;
+uniform mat3 ssao_effect_mat;
+
+varying vec4 vary_light;
+varying vec2 vary_fragcoord;
+
+vec3 vary_PositionEye;
+
+vec3 vary_SunlitColor;
+vec3 vary_AmblitColor;
+vec3 vary_AdditiveColor;
+vec3 vary_AtmosAttenuation;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+vec4 getPosition_d(vec2 pos_screen, float depth)
+{
+	vec2 sc = pos_screen.xy*2.0;
+	sc /= screen_res;
+	sc -= vec2(1.0,1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = inv_proj * ndc;
+	pos /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+vec3 getPositionEye()
+{
+	return vary_PositionEye;
+}
+vec3 getSunlitColor()
+{
+	return vary_SunlitColor;
+}
+vec3 getAmblitColor()
+{
+	return vary_AmblitColor;
+}
+vec3 getAdditiveColor()
+{
+	return vary_AdditiveColor;
+}
+vec3 getAtmosAttenuation()
+{
+	return vary_AtmosAttenuation;
+}
+
+
+void setPositionEye(vec3 v)
+{
+	vary_PositionEye = v;
+}
+
+void setSunlitColor(vec3 v)
+{
+	vary_SunlitColor = v;
+}
+
+void setAmblitColor(vec3 v)
+{
+	vary_AmblitColor = v;
+}
+
+void setAdditiveColor(vec3 v)
+{
+	vary_AdditiveColor = v;
+}
+
+void setAtmosAttenuation(vec3 v)
+{
+	vary_AtmosAttenuation = v;
+}
+
+void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
+
+	vec3 P = inPositionEye;
+	setPositionEye(P);
+	
+	//(TERRAIN) limit altitude
+	if (P.y > max_y.x) P *= (max_y.x / P.y);
+	if (P.y < -max_y.x) P *= (-max_y.x / P.y);
+
+	vec3 tmpLightnorm = lightnorm.xyz;
+
+	vec3 Pn = normalize(P);
+	float Plen = length(P);
+
+	vec4 temp1 = vec4(0);
+	vec3 temp2 = vec3(0);
+	vec4 blue_weight;
+	vec4 haze_weight;
+	vec4 sunlight = sunlight_color;
+	vec4 light_atten;
+
+	//sunlight attenuation effect (hue and brightness) due to atmosphere
+	//this is used later for sunlight modulation at various altitudes
+	light_atten = (blue_density * 1.0 + vec4(haze_density.r) * 0.25) * (density_multiplier.x * max_y.x);
+		//I had thought blue_density and haze_density should have equal weighting,
+		//but attenuation due to haze_density tends to seem too strong
+
+	temp1 = blue_density + vec4(haze_density.r);
+	blue_weight = blue_density / temp1;
+	haze_weight = vec4(haze_density.r) / temp1;
+
+	//(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
+	temp2.y = max(0.0, tmpLightnorm.y);
+	temp2.y = 1. / temp2.y;
+	sunlight *= exp( - light_atten * temp2.y);
+
+	// main atmospheric scattering line integral
+	temp2.z = Plen * density_multiplier.x;
+
+	// Transparency (-> temp1)
+	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier.x in a variable because the ati
+	// compiler gets confused.
+	temp1 = exp(-temp1 * temp2.z * distance_multiplier.x);
+
+	//final atmosphere attenuation factor
+	setAtmosAttenuation(temp1.rgb);
+	
+	//compute haze glow
+	//(can use temp2.x as temp because we haven't used it yet)
+	temp2.x = dot(Pn, tmpLightnorm.xyz);
+	temp2.x = 1. - temp2.x;
+		//temp2.x is 0 at the sun and increases away from sun
+	temp2.x = max(temp2.x, .03);	//was glow.y
+		//set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
+	temp2.x *= glow.x;
+		//higher glow.x gives dimmer glow (because next step is 1 / "angle")
+	temp2.x = pow(temp2.x, glow.z);
+		//glow.z should be negative, so we're doing a sort of (1 / "angle") function
+
+	//add "minimum anti-solar illumination"
+	temp2.x += .25;
+	
+	//increase ambient when there are more clouds
+	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow.x * 0.5;
+	
+	/*  decrease value and saturation (that in HSV, not HSL) for occluded areas
+	 * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html
+	 * // The following line of code performs the equivalent of:
+	 * float ambAlpha = tmpAmbient.a;
+	 * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis
+	 * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue);
+	 * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha);
+	 */
+	tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a);
+
+	//haze color
+	setAdditiveColor(
+		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow.x) + tmpAmbient)
+	  + (haze_horizon.r * haze_weight) * (sunlight*(1.-cloud_shadow.x) * temp2.x
+		  + tmpAmbient)));
+
+	//brightness of surface both sunlight and ambient
+	setSunlitColor(vec3(sunlight * .5));
+	setAmblitColor(vec3(tmpAmbient * .25));
+	setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1));
+}
+
+vec3 atmosLighting(vec3 light)
+{
+	light *= getAtmosAttenuation().r;
+	light += getAdditiveColor();
+	return (2.0 * light);
+}
+
+vec3 atmosTransport(vec3 light) {
+	light *= getAtmosAttenuation().r;
+	light += getAdditiveColor() * 2.0;
+	return light;
+}
+vec3 atmosGetDiffuseSunlightColor()
+{
+	return getSunlitColor();
+}
+
+vec3 scaleDownLight(vec3 light)
+{
+	return (light / scene_light_strength );
+}
+
+vec3 scaleUpLight(vec3 light)
+{
+	return (light * scene_light_strength);
+}
+
+vec3 atmosAmbient(vec3 light)
+{
+	return getAmblitColor() + light / 2.0;
+}
+
+vec3 atmosAffectDirectionalLight(float lightIntensity)
+{
+	return getSunlitColor() * lightIntensity;
+}
+
+vec3 scaleSoftClip(vec3 light)
+{
+	//soft clip effect:
+	light = 1. - clamp(light, vec3(0.), vec3(1.));
+	light = 1. - pow(light, gamma.xxx);
+
+	return light;
+}
+
+vec4 texture2DMS(sampler2DMS tex, ivec2 tc)
+{
+	vec4 ret = texelFetch(tex,tc,0);
+	ret += texelFetch(tex,tc,1);
+	ret += texelFetch(tex,tc,2);
+	ret += texelFetch(tex,tc,3);
+	ret *= 0.25;
+
+	return ret;
+}
+
+void main() 
+{
+	int samples = 4;
+	vec2 tc = vary_fragcoord.xy;
+	ivec2 itc = ivec2(tc);
+
+	vec3 fcol = vec3(0,0,0);
+
+	for (int i = 0; i < samples; ++i)
+	{
+		float depth = texelFetch(depthMap, itc, i).r;
+		vec3 pos = getPosition_d(tc, depth).xyz;
+		vec3 norm = texelFetch(normalMap, itc, i).xyz;
+
+		norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+		//vec3 nz = texture2D(noiseMap, vary_fragcoord.xy/128.0).xyz;
+	
+		float da = max(dot(norm.xyz, vary_light.xyz), 0.0);
+	
+		vec4 diffuse = texelFetch(diffuseRect, itc, i);
+		if (diffuse.a >= 1.0)
+		{
+			fcol += diffuse.rgb;
+		}
+		else
+		{
+			vec4 spec = texelFetch(specularRect, itc, i);
+	
+			calcAtmospherics(pos.xyz, 1.0);
+	
+			vec3 col = atmosAmbient(vec3(0));
+			col += atmosAffectDirectionalLight(max(min(da, 1.0), diffuse.a));
+	
+			col *= diffuse.rgb;
+	
+			if (spec.a > 0.0) // specular reflection
+			{
+				// the old infinite-sky shiny reflection
+				//
+				vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
+				float sa = dot(refnormpersp, vary_light.xyz);
+				vec3 dumbshiny = vary_SunlitColor*texture2D(lightFunc, vec2(sa, spec.a)).a;
+
+				// add the two types of shiny together
+				col += dumbshiny * spec.rgb;
+			}
+
+			col = atmosLighting(col);
+			col = scaleSoftClip(col);
+			fcol += col;
+		}
+	}
+				
+	gl_FragColor.rgb = fcol.rgb/samples;
+	gl_FragColor.a = 0.0;
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/sunLightMSF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightMSF.glsl
new file mode 100644
index 0000000000..00093836a2
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightMSF.glsl
@@ -0,0 +1,17 @@
+/** 
+ * @file sunLightF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+//class 1, no shadow, no SSAO, should never be called
+
+#extension GL_ARB_texture_rectangle : enable
+
+void main() 
+{
+	gl_FragColor = vec4(0,0,0,0);
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOMSF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOMSF.glsl
new file mode 100644
index 0000000000..49b45dedd6
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOMSF.glsl
@@ -0,0 +1,125 @@
+/** 
+ * @file sunLightSSAOF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+//class 1 -- no shadow, SSAO only
+
+uniform sampler2DMS depthMap;
+uniform sampler2DMS normalMap;
+uniform sampler2D noiseMap;
+
+
+// Inputs
+uniform mat4 shadow_matrix[6];
+uniform vec4 shadow_clip;
+uniform float ssao_radius;
+uniform float ssao_max_radius;
+uniform float ssao_factor;
+uniform float ssao_factor_inv;
+
+varying vec2 vary_fragcoord;
+varying vec4 vary_light;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+uniform float shadow_bias;
+uniform float shadow_offset;
+
+vec4 getPosition(ivec2 pos_screen, int sample)
+{
+	float depth = texelFetch(depthMap, pos_screen, sample).r;
+	vec2 sc = pos_screen.xy*2.0;
+	sc /= screen_res;
+	sc -= vec2(1.0,1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = inv_proj * ndc;
+	pos /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+//calculate decreases in ambient lighting when crowded out (SSAO)
+float calcAmbientOcclusion(vec4 pos, vec3 norm, int sample)
+{
+	float ret = 1.0;
+	
+	vec2 kern[8];
+	// exponentially (^2) distant occlusion samples spread around origin
+	kern[0] = vec2(-1.0, 0.0) * 0.125*0.125;
+	kern[1] = vec2(1.0, 0.0) * 0.250*0.250;
+	kern[2] = vec2(0.0, 1.0) * 0.375*0.375;
+	kern[3] = vec2(0.0, -1.0) * 0.500*0.500;
+	kern[4] = vec2(0.7071, 0.7071) * 0.625*0.625;
+	kern[5] = vec2(-0.7071, -0.7071) * 0.750*0.750;
+	kern[6] = vec2(-0.7071, 0.7071) * 0.875*0.875;
+	kern[7] = vec2(0.7071, -0.7071) * 1.000*1.000;
+
+	vec2 pos_screen = vary_fragcoord.xy;
+	vec3 pos_world = pos.xyz;
+	vec2 noise_reflect = texture2D(noiseMap, vary_fragcoord.xy/128.0).xy;
+		
+	float angle_hidden = 0.0;
+	int points = 0;
+		
+	float scale = min(ssao_radius / -pos_world.z, ssao_max_radius);
+		
+	// it was found that keeping # of samples a constant was the fastest, probably due to compiler optimizations unrolling?)
+	for (int i = 0; i < 8; i++)
+	{
+		ivec2 samppos_screen = ivec2(pos_screen + scale * reflect(kern[i], noise_reflect));
+		vec3 samppos_world = getPosition(samppos_screen, sample).xyz; 
+			
+		vec3 diff = pos_world - samppos_world;
+		float dist2 = dot(diff, diff);
+			
+		// assume each sample corresponds to an occluding sphere with constant radius, constant x-sectional area
+		// --> solid angle shrinking by the square of distance
+		//radius is somewhat arbitrary, can approx with just some constant k * 1 / dist^2
+		//(k should vary inversely with # of samples, but this is taken care of later)
+			
+		angle_hidden = angle_hidden + float(dot((samppos_world - 0.05*norm - pos_world), norm) > 0.0) * min(1.0/dist2, ssao_factor_inv);
+			
+		// 'blocked' samples (significantly closer to camera relative to pos_world) are "no data", not "no occlusion" 
+		points = points + int(diff.z > -1.0);
+	}
+		
+	angle_hidden = min(ssao_factor*angle_hidden/float(points), 1.0);
+		
+	ret = (1.0 - (float(points != 0) * angle_hidden));
+	
+	return min(ret, 1.0);
+}
+
+void main() 
+{
+	int samples = 4;
+
+	vec2 pos_screen = vary_fragcoord.xy;
+	ivec2 itc = ivec2(pos_screen);
+		
+	float col = 0;
+
+	for (int i = 0; i < samples; i++)
+	{
+		vec4 pos = getPosition(itc, i);
+		vec3 norm = texelFetch(normalMap, itc, i).xyz;
+		norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+		col += calcAmbientOcclusion(pos,norm,i);
+	}
+
+	col /= samples;
+
+	gl_FragColor[0] = 1.0;
+	gl_FragColor[1] = col;
+	gl_FragColor[2] = 1.0; 
+	gl_FragColor[3] = 1.0;
+}
diff --git a/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl
new file mode 100644
index 0000000000..a47ee678f6
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl
@@ -0,0 +1,74 @@
+/** 
+ * @file edgeF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+uniform sampler2DMS depthMap;
+uniform sampler2DMS normalMap;
+
+varying vec2 vary_fragcoord;
+
+uniform float depth_cutoff;
+uniform float norm_cutoff;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+float getDepth(float z)
+{
+	z = z*2.0-1.0;
+	vec4 ndc = vec4(0.0, 0.0, z, 1.0);
+	vec4 p = inv_proj*ndc;
+	return p.z/p.w;
+}
+
+void main() 
+{
+
+	float e = 0;
+	
+	ivec2 itc = ivec2(vary_fragcoord.xy);
+
+	for (int i = 0; i < samples; i++)
+	{	
+		vec3 norm = texelFetch(normalMap, itc, i).xyz;
+		norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+		float depth = getDepth(texelFetch(depthMap, itc, i).r);
+	
+		vec2 tc = vary_fragcoord.xy;
+	
+		float sc = 0.75;
+	
+		vec2 de;
+		de.x = (depth-getDepth(tc+vec2(sc, sc))) + (depth-getDepth(tc+vec2(-sc, -sc)));
+		de.y = (depth-getDepth(tc+vec2(-sc, sc))) + (depth-getDepth(tc+vec2(sc, -sc)));
+		de /= depth;
+		de *= de;
+		de = step(depth_cutoff, de);
+	
+		vec2 ne;
+		vec3 nexnorm = texture2DRect(normalMap, tc+vec2(-sc,-sc)).rgb;
+		nexnorm = vec3((nexnorm.xy-0.5)*2.0,nexnorm.z); // unpack norm
+		ne.x = dot(nexnorm, norm);
+		vec3 neynorm = texture2DRect(normalMap, tc+vec2(sc,sc)).rgb;
+		neynorm = vec3((neynorm.xy-0.5)*2.0,neynorm.z); // unpack norm
+		ne.y = dot(neynorm, norm);
+	
+		ne = 1.0-ne;
+	
+		ne = step(norm_cutoff, ne);
+
+		e += dot(de,de)+dot(ne,ne);
+	}
+
+	e /= samples;
+	
+	gl_FragColor.a = e;
+}
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl
new file mode 100644
index 0000000000..7d4548d6d9
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl
@@ -0,0 +1,307 @@
+/** 
+ * @file softenLightMSF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+uniform sampler2DMS diffuseRect;
+uniform sampler2DMS specularRect;
+uniform sampler2DMS normalMap;
+uniform sampler2DMS lightMap;
+uniform sampler2DMS depthMap;
+uniform sampler2D	  noiseMap;
+uniform samplerCube environmentMap;
+uniform sampler2D	  lightFunc;
+uniform vec3 gi_quad;
+
+uniform float blur_size;
+uniform float blur_fidelity;
+
+// Inputs
+uniform vec4 morphFactor;
+uniform vec3 camPosLocal;
+//uniform vec4 camPosWorld;
+uniform vec4 gamma;
+uniform vec4 lightnorm;
+uniform vec4 sunlight_color;
+uniform vec4 ambient;
+uniform vec4 blue_horizon;
+uniform vec4 blue_density;
+uniform vec4 haze_horizon;
+uniform vec4 haze_density;
+uniform vec4 cloud_shadow;
+uniform vec4 density_multiplier;
+uniform vec4 distance_multiplier;
+uniform vec4 max_y;
+uniform vec4 glow;
+uniform float scene_light_strength;
+uniform vec3 env_mat[3];
+uniform vec4 shadow_clip;
+uniform mat3 ssao_effect_mat;
+
+uniform mat4 inv_proj;
+uniform vec2 screen_res;
+
+varying vec4 vary_light;
+varying vec2 vary_fragcoord;
+
+vec3 vary_PositionEye;
+
+vec3 vary_SunlitColor;
+vec3 vary_AmblitColor;
+vec3 vary_AdditiveColor;
+vec3 vary_AtmosAttenuation;
+
+vec4 getPosition_d(vec2 pos_screen, float depth)
+{
+	vec2 sc = pos_screen.xy*2.0;
+	sc /= screen_res;
+	sc -= vec2(1.0,1.0);
+	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
+	vec4 pos = inv_proj * ndc;
+	pos /= pos.w;
+	pos.w = 1.0;
+	return pos;
+}
+
+vec3 getPositionEye()
+{
+	return vary_PositionEye;
+}
+vec3 getSunlitColor()
+{
+	return vary_SunlitColor;
+}
+vec3 getAmblitColor()
+{
+	return vary_AmblitColor;
+}
+vec3 getAdditiveColor()
+{
+	return vary_AdditiveColor;
+}
+vec3 getAtmosAttenuation()
+{
+	return vary_AtmosAttenuation;
+}
+
+
+void setPositionEye(vec3 v)
+{
+	vary_PositionEye = v;
+}
+
+void setSunlitColor(vec3 v)
+{
+	vary_SunlitColor = v;
+}
+
+void setAmblitColor(vec3 v)
+{
+	vary_AmblitColor = v;
+}
+
+void setAdditiveColor(vec3 v)
+{
+	vary_AdditiveColor = v;
+}
+
+void setAtmosAttenuation(vec3 v)
+{
+	vary_AtmosAttenuation = v;
+}
+
+void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
+
+	vec3 P = inPositionEye;
+	setPositionEye(P);
+	
+	//(TERRAIN) limit altitude
+	if (P.y > max_y.x) P *= (max_y.x / P.y);
+	if (P.y < -max_y.x) P *= (-max_y.x / P.y);
+
+	vec3 tmpLightnorm = lightnorm.xyz;
+
+	vec3 Pn = normalize(P);
+	float Plen = length(P);
+
+	vec4 temp1 = vec4(0);
+	vec3 temp2 = vec3(0);
+	vec4 blue_weight;
+	vec4 haze_weight;
+	vec4 sunlight = sunlight_color;
+	vec4 light_atten;
+
+	//sunlight attenuation effect (hue and brightness) due to atmosphere
+	//this is used later for sunlight modulation at various altitudes
+	light_atten = (blue_density * 1.0 + vec4(haze_density.r) * 0.25) * (density_multiplier.x * max_y.x);
+		//I had thought blue_density and haze_density should have equal weighting,
+		//but attenuation due to haze_density tends to seem too strong
+
+	temp1 = blue_density + vec4(haze_density.r);
+	blue_weight = blue_density / temp1;
+	haze_weight = vec4(haze_density.r) / temp1;
+
+	//(TERRAIN) compute sunlight from lightnorm only (for short rays like terrain)
+	temp2.y = max(0.0, tmpLightnorm.y);
+	temp2.y = 1. / temp2.y;
+	sunlight *= exp( - light_atten * temp2.y);
+
+	// main atmospheric scattering line integral
+	temp2.z = Plen * density_multiplier.x;
+
+	// Transparency (-> temp1)
+	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier.x in a variable because the ati
+	// compiler gets confused.
+	temp1 = exp(-temp1 * temp2.z * distance_multiplier.x);
+
+	//final atmosphere attenuation factor
+	setAtmosAttenuation(temp1.rgb);
+	
+	//compute haze glow
+	//(can use temp2.x as temp because we haven't used it yet)
+	temp2.x = dot(Pn, tmpLightnorm.xyz);
+	temp2.x = 1. - temp2.x;
+		//temp2.x is 0 at the sun and increases away from sun
+	temp2.x = max(temp2.x, .03);	//was glow.y
+		//set a minimum "angle" (smaller glow.y allows tighter, brighter hotspot)
+	temp2.x *= glow.x;
+		//higher glow.x gives dimmer glow (because next step is 1 / "angle")
+	temp2.x = pow(temp2.x, glow.z);
+		//glow.z should be negative, so we're doing a sort of (1 / "angle") function
+
+	//add "minimum anti-solar illumination"
+	temp2.x += .25;
+	
+	//increase ambient when there are more clouds
+	vec4 tmpAmbient = ambient + (vec4(1.) - ambient) * cloud_shadow.x * 0.5;
+	
+	/*  decrease value and saturation (that in HSV, not HSL) for occluded areas
+	 * // for HSV color/geometry used here, see http://gimp-savvy.com/BOOK/index.html?node52.html
+	 * // The following line of code performs the equivalent of:
+	 * float ambAlpha = tmpAmbient.a;
+	 * float ambValue = dot(vec3(tmpAmbient), vec3(0.577)); // projection onto <1/rt(3), 1/rt(3), 1/rt(3)>, the neutral white-black axis
+	 * vec3 ambHueSat = vec3(tmpAmbient) - vec3(ambValue);
+	 * tmpAmbient = vec4(RenderSSAOEffect.valueFactor * vec3(ambValue) + RenderSSAOEffect.saturationFactor *(1.0 - ambFactor) * ambHueSat, ambAlpha);
+	 */
+	tmpAmbient = vec4(mix(ssao_effect_mat * tmpAmbient.rgb, tmpAmbient.rgb, ambFactor), tmpAmbient.a);
+
+	//haze color
+	setAdditiveColor(
+		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow.x) + tmpAmbient)
+	  + (haze_horizon.r * haze_weight) * (sunlight*(1.-cloud_shadow.x) * temp2.x
+		  + tmpAmbient)));
+
+	//brightness of surface both sunlight and ambient
+	setSunlitColor(vec3(sunlight * .5));
+	setAmblitColor(vec3(tmpAmbient * .25));
+	setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1));
+}
+
+vec3 atmosLighting(vec3 light)
+{
+	light *= getAtmosAttenuation().r;
+	light += getAdditiveColor();
+	return (2.0 * light);
+}
+
+vec3 atmosTransport(vec3 light) {
+	light *= getAtmosAttenuation().r;
+	light += getAdditiveColor() * 2.0;
+	return light;
+}
+vec3 atmosGetDiffuseSunlightColor()
+{
+	return getSunlitColor();
+}
+
+vec3 scaleDownLight(vec3 light)
+{
+	return (light / scene_light_strength );
+}
+
+vec3 scaleUpLight(vec3 light)
+{
+	return (light * scene_light_strength);
+}
+
+vec3 atmosAmbient(vec3 light)
+{
+	return getAmblitColor() + light / 2.0;
+}
+
+vec3 atmosAffectDirectionalLight(float lightIntensity)
+{
+	return getSunlitColor() * lightIntensity;
+}
+
+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() 
+{
+	int samples = 4;
+	vec2 tc = vary_fragcoord.xy;
+	ivec2 itc = ivec2(tc);
+
+	vec3 fcol = vec3(0,0,0);
+
+	float amb = 0;
+
+	for (int i = 0; i < samples; ++i)
+	{
+		float depth = texelFetch(depthMap, itc.xy, i).r;
+		vec3 pos = getPosition_d(tc, depth).xyz;
+		vec3 norm = texelFetch(normalMap, itc, i).xyz;
+		norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
+			
+		float da = max(dot(norm.xyz, vary_light.xyz), 0.0);
+	
+		vec4 diffuse = texelFetch(diffuseRect, itc, i);
+		vec4 spec = texelFetch(specularRect, itc, i);
+	
+		vec2 scol_ambocc = texelFetch(lightMap, itc, i).rg;
+		float scol = max(scol_ambocc.r, diffuse.a); 
+		float ambocc = scol_ambocc.g;
+		amb += ambocc;
+
+		calcAtmospherics(pos.xyz, ambocc);
+	
+		vec3 col = atmosAmbient(vec3(0));
+		col += atmosAffectDirectionalLight(max(min(da, scol), diffuse.a));
+	
+		col *= diffuse.rgb;
+	
+		if (spec.a > 0.0) // specular reflection
+		{
+			// the old infinite-sky shiny reflection
+			//
+			vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
+			float sa = dot(refnormpersp, vary_light.xyz);
+			vec3 dumbshiny = vary_SunlitColor*scol_ambocc.r*texture2D(lightFunc, vec2(sa, spec.a)).a;
+
+			// add the two types of shiny together
+			col += dumbshiny * spec.rgb;
+		}
+	
+		col = atmosLighting(col);
+		col = scaleSoftClip(col);
+
+		fcol += col;
+	}
+		
+	gl_FragColor.rgb = fcol/samples; 
+	gl_FragColor.a = 0.0;
+}
diff --git a/indra/newview/lldrawpoolwlsky.cpp b/indra/newview/lldrawpoolwlsky.cpp
index 696c2d1abd..66b834ab11 100644
--- a/indra/newview/lldrawpoolwlsky.cpp
+++ b/indra/newview/lldrawpoolwlsky.cpp
@@ -44,6 +44,8 @@ LLPointer<LLViewerTexture> LLDrawPoolWLSky::sCloudNoiseTexture = NULL;
 
 LLPointer<LLImageRaw> LLDrawPoolWLSky::sCloudNoiseRawImage = NULL;
 
+static LLGLSLShader* cloud_shader = NULL;
+static LLGLSLShader* sky_shader = NULL;
 
 
 LLDrawPoolWLSky::LLDrawPoolWLSky(void) :
@@ -83,12 +85,32 @@ LLViewerTexture *LLDrawPoolWLSky::getDebugTexture()
 
 void LLDrawPoolWLSky::beginRenderPass( S32 pass )
 {
+	sky_shader =
+		LLPipeline::sUnderWaterRender ?
+			&gObjectSimpleWaterProgram :
+			&gWLSkyProgram;
+
+	cloud_shader =
+			LLPipeline::sUnderWaterRender ?
+				&gObjectSimpleWaterProgram :
+				&gWLCloudProgram;
 }
 
 void LLDrawPoolWLSky::endRenderPass( S32 pass )
 {
 }
 
+void LLDrawPoolWLSky::beginDeferredPass(S32 pass)
+{
+	sky_shader = &gDeferredWLSkyProgram;
+	cloud_shader = &gDeferredWLCloudProgram;
+}
+
+void LLDrawPoolWLSky::endDeferredPass(S32 pass)
+{
+
+}
+
 void LLDrawPoolWLSky::renderDome(F32 camHeightLocal, LLGLSLShader * shader) const
 {
 	LLVector3 const & origin = LLViewerCamera::getInstance()->getOrigin();
@@ -128,19 +150,14 @@ void LLDrawPoolWLSky::renderSkyHaze(F32 camHeightLocal) const
 {
 	if (gPipeline.canUseWindLightShaders() && gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY))
 	{
-		LLGLSLShader* shader =
-			LLPipeline::sUnderWaterRender ?
-				&gObjectSimpleWaterProgram :
-				&gWLSkyProgram;
-
 		LLGLDisable blend(GL_BLEND);
 
-		shader->bind();
+		sky_shader->bind();
 
 		/// Render the skydome
-		renderDome(camHeightLocal, shader);	
+		renderDome(camHeightLocal, sky_shader);	
 
-		shader->unbind();
+		sky_shader->unbind();
 	}
 }
 
@@ -186,23 +203,18 @@ void LLDrawPoolWLSky::renderSkyClouds(F32 camHeightLocal) const
 {
 	if (gPipeline.canUseWindLightShaders() && gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLOUDS))
 	{
-		LLGLSLShader* shader =
-			LLPipeline::sUnderWaterRender ?
-				&gObjectSimpleWaterProgram :
-				&gWLCloudProgram;
-
 		LLGLEnable blend(GL_BLEND);
 		gGL.setSceneBlendType(LLRender::BT_ALPHA);
 		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 
 		gGL.getTexUnit(0)->bind(sCloudNoiseTexture);
 
-		shader->bind();
+		cloud_shader->bind();
 
 		/// Render the skydome
-		renderDome(camHeightLocal, shader);
+		renderDome(camHeightLocal, cloud_shader);
 
-		shader->unbind();
+		cloud_shader->unbind();
 	}
 }
 
@@ -246,6 +258,50 @@ void LLDrawPoolWLSky::renderHeavenlyBodies()
 	}
 }
 
+void LLDrawPoolWLSky::renderDeferred(S32 pass)
+{
+	if (!gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY))
+	{
+		return;
+	}
+	LLFastTimer ftm(FTM_RENDER_WL_SKY);
+
+	const F32 camHeightLocal = LLWLParamManager::instance()->getDomeOffset() * LLWLParamManager::instance()->getDomeRadius();
+
+	LLGLSNoFog disableFog;
+	LLGLDepthTest depth(GL_TRUE, GL_FALSE);
+	LLGLDisable clip(GL_CLIP_PLANE0);
+
+	gGL.setColorMask(true, false);
+
+	LLGLSquashToFarClip far_clip(glh_get_current_projection());
+
+	renderSkyHaze(camHeightLocal);
+
+	/*LLVector3 const & origin = LLViewerCamera::getInstance()->getOrigin();
+	glPushMatrix();
+
+		glTranslatef(origin.mV[0], origin.mV[1], origin.mV[2]);
+
+		// *NOTE: have to bind a texture here since register combiners blending in
+		// renderStars() requires something to be bound and we might as well only
+		// bind the moon's texture once.		
+		gGL.getTexUnit(0)->bind(gSky.mVOSkyp->mFace[LLVOSky::FACE_MOON]->getTexture());
+
+		renderHeavenlyBodies();
+
+		renderStars();
+		
+
+	glPopMatrix();*/
+
+	renderSkyClouds(camHeightLocal);
+
+	gGL.setColorMask(true, true);
+	//gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+
+}
+
 void LLDrawPoolWLSky::render(S32 pass)
 {
 	if (!gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY))
diff --git a/indra/newview/lldrawpoolwlsky.h b/indra/newview/lldrawpoolwlsky.h
index 8ca1ebb942..cd15c991ee 100644
--- a/indra/newview/lldrawpoolwlsky.h
+++ b/indra/newview/lldrawpoolwlsky.h
@@ -44,10 +44,10 @@ public:
 
 	/*virtual*/ BOOL isDead() { return FALSE; }
 
-	/*virtual*/ S32 getNumPostDeferredPasses() { return getNumPasses(); }
-	/*virtual*/ void beginPostDeferredPass(S32 pass) { beginRenderPass(pass); }
-	/*virtual*/ void endPostDeferredPass(S32 pass) { endRenderPass(pass); }
-	/*virtual*/ void renderPostDeferred(S32 pass) { render(pass); }
+	/*virtual*/ S32 getNumDeferredPasses() { return 1; }
+	/*virtual*/ void beginDeferredPass(S32 pass);
+	/*virtual*/ void endDeferredPass(S32 pass);
+	/*virtual*/ void renderDeferred(S32 pass);
 
 	/*virtual*/ LLViewerTexture *getDebugTexture();
 	/*virtual*/ void beginRenderPass( S32 pass );
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index e41773d273..10e96525ce 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -836,7 +836,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 			if (LLPipeline::sRenderDeferred && !LLPipeline::sUnderWaterRender)
 			{
 				gPipeline.mDeferredScreen.bindTarget();
-				glClearColor(0,0,0,0);
+				glClearColor(1,0,1,1);
 				gPipeline.mDeferredScreen.clear();
 			}
 			else
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 3e85802ba6..84fb1eb5d0 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -138,7 +138,8 @@ LLGLSLShader			gDeferredGIFinalProgram;
 LLGLSLShader			gDeferredPostGIProgram;
 LLGLSLShader			gDeferredPostProgram;
 LLGLSLShader			gDeferredPostNoDoFProgram;
-
+LLGLSLShader			gDeferredWLSkyProgram;
+LLGLSLShader			gDeferredWLCloudProgram;
 LLGLSLShader			gLuminanceGatherProgram;
 
 
@@ -190,6 +191,8 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
 	mShaderList.push_back(&gDeferredGIFinalProgram);
 	mShaderList.push_back(&gDeferredWaterProgram);
 	mShaderList.push_back(&gDeferredAvatarAlphaProgram);
+	mShaderList.push_back(&gDeferredWLSkyProgram);
+	mShaderList.push_back(&gDeferredWLCloudProgram);
 }
 
 LLViewerShaderMgr::~LLViewerShaderMgr()
@@ -952,6 +955,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredGIProgram.unload();
 		gDeferredGIFinalProgram.unload();
 		gDeferredWaterProgram.unload();
+		gDeferredWLSkyProgram.unload();
+		gDeferredWLCloudProgram.unload();
 		return TRUE;
 	}
 
@@ -959,6 +964,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	BOOL success = TRUE;
 
+	bool multisample = gSavedSettings.getU32("RenderFSAASamples") > 0 && gGLManager.mHasTextureMultisample;
+
 	if (success)
 	{
 		gDeferredDiffuseProgram.mName = "Deferred Diffuse Shader";
@@ -1083,11 +1090,25 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 		if (gSavedSettings.getBOOL("RenderDeferredSSAO"))
 		{
-			fragment = "deferred/sunLightSSAOF.glsl";
+			if (multisample)
+			{
+				fragment = "deferred/sunlightSSAOMSF.glsl";
+			}
+			else
+			{
+				fragment = "deferred/sunLightSSAOF.glsl";
+			}
 		}
 		else
 		{
-			fragment = "deferred/sunLightF.glsl";
+			if (multisample)
+			{
+				fragment = "deferred/sunlightMSF.glsl";
+			}
+			else
+			{
+				fragment = "deferred/sunLightF.glsl";
+			}
 		}
 
 		gDeferredSunProgram.mName = "Deferred Sun Shader";
@@ -1100,10 +1121,21 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (success)
 	{
+		std::string fragment;
+
+		if (multisample)
+		{
+			fragment = "deferred/blurLightMSF.glsl";
+		}
+		else
+		{
+			fragment = "deferred/blurLightF.glsl";
+		}
+
 		gDeferredBlurLightProgram.mName = "Deferred Blur Light Shader";
 		gDeferredBlurLightProgram.mShaderFiles.clear();
 		gDeferredBlurLightProgram.mShaderFiles.push_back(make_pair("deferred/blurLightV.glsl", GL_VERTEX_SHADER_ARB));
-		gDeferredBlurLightProgram.mShaderFiles.push_back(make_pair("deferred/blurLightF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredBlurLightProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER_ARB));
 		gDeferredBlurLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredBlurLightProgram.createShader(NULL, NULL);
 	}
@@ -1153,10 +1185,21 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (success)
 	{
+		std::string fragment;
+
+		if (multisample)
+		{
+			fragment = "deferred/softenLightMSF.glsl";
+		}
+		else
+		{
+			fragment = "deferred/softenLightF.glsl";
+		}
+
 		gDeferredSoftenProgram.mName = "Deferred Soften Shader";
 		gDeferredSoftenProgram.mShaderFiles.clear();
 		gDeferredSoftenProgram.mShaderFiles.push_back(make_pair("deferred/softenLightV.glsl", GL_VERTEX_SHADER_ARB));
-		gDeferredSoftenProgram.mShaderFiles.push_back(make_pair("deferred/softenLightF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredSoftenProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER_ARB));
 
 		gDeferredSoftenProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
@@ -1239,32 +1282,85 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (success)
 	{
+		std::string fragment;
+		if (multisample)
+		{
+			fragment = "deferred/postDeferredMSF.glsl";
+		}
+		else
+		{
+			fragment = "deferred/postDeferredF.glsl";
+		}
+
 		gDeferredPostProgram.mName = "Deferred Post Shader";
 		gDeferredPostProgram.mShaderFiles.clear();
 		gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredV.glsl", GL_VERTEX_SHADER_ARB));
-		gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredPostProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER_ARB));
 		gDeferredPostProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredPostProgram.createShader(NULL, NULL);
 	}
 
 	if (success)
 	{
+		std::string fragment;
+		if (multisample)
+		{
+			fragment = "deferred/postDeferredNoDoFMSF.glsl";
+		}
+		else
+		{
+			fragment = "deferred/postDeferredNoDoFF.glsl";
+		}
+
 		gDeferredPostNoDoFProgram.mName = "Deferred Post Shader";
 		gDeferredPostNoDoFProgram.mShaderFiles.clear();
 		gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredV.glsl", GL_VERTEX_SHADER_ARB));
-		gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoDoFF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER_ARB));
 		gDeferredPostNoDoFProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredPostNoDoFProgram.createShader(NULL, NULL);
 	}
 
+	if (success)
+	{
+		gDeferredWLSkyProgram.mName = "Deferred Windlight Sky Shader";
+		//gWLSkyProgram.mFeatures.hasGamma = true;
+		gDeferredWLSkyProgram.mShaderFiles.clear();
+		gDeferredWLSkyProgram.mShaderFiles.push_back(make_pair("deferred/skyV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredWLSkyProgram.mShaderFiles.push_back(make_pair("deferred/skyF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredWLSkyProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+		gDeferredWLSkyProgram.mShaderGroup = LLGLSLShader::SG_SKY;
+		success = gDeferredWLSkyProgram.createShader(NULL, &mWLUniforms);
+	}
+
+	if (success)
+	{
+		gDeferredWLCloudProgram.mName = "Deferred Windlight Cloud Program";
+		gDeferredWLCloudProgram.mShaderFiles.clear();
+		gDeferredWLCloudProgram.mShaderFiles.push_back(make_pair("deferred/cloudsV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredWLCloudProgram.mShaderFiles.push_back(make_pair("deferred/cloudsF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredWLCloudProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+		gDeferredWLCloudProgram.mShaderGroup = LLGLSLShader::SG_SKY;
+		success = gDeferredWLCloudProgram.createShader(NULL, &mWLUniforms);
+	}
+
 	if (mVertexShaderLevel[SHADER_DEFERRED] > 1)
 	{
 		if (success)
 		{
+			std::string fragment;
+			if (multisample)
+			{
+				fragment = "deferred/edgeMSF.glsl";
+			}
+			else
+			{
+				fragment = "deferred/edgeF.glsl";
+			}
+
 			gDeferredEdgeProgram.mName = "Deferred Edge Shader";
 			gDeferredEdgeProgram.mShaderFiles.clear();
 			gDeferredEdgeProgram.mShaderFiles.push_back(make_pair("deferred/edgeV.glsl", GL_VERTEX_SHADER_ARB));
-			gDeferredEdgeProgram.mShaderFiles.push_back(make_pair("deferred/edgeF.glsl", GL_FRAGMENT_SHADER_ARB));
+			gDeferredEdgeProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER_ARB));
 			gDeferredEdgeProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 			success = gDeferredEdgeProgram.createShader(NULL, NULL);
 		}
@@ -1272,8 +1368,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (mVertexShaderLevel[SHADER_DEFERRED] > 2)
 	{
-		
-
 		if (success)
 		{
 			gDeferredPostGIProgram.mName = "Deferred Post GI Shader";
diff --git a/indra/newview/llviewershadermgr.h b/indra/newview/llviewershadermgr.h
index 72ac5e02ee..b13775742b 100644
--- a/indra/newview/llviewershadermgr.h
+++ b/indra/newview/llviewershadermgr.h
@@ -374,6 +374,8 @@ extern LLGLSLShader			gDeferredAttachmentShadowProgram;
 extern LLGLSLShader			gDeferredAlphaProgram;
 extern LLGLSLShader			gDeferredFullbrightProgram;
 extern LLGLSLShader			gDeferredAvatarAlphaProgram;
+extern LLGLSLShader			gDeferredWLSkyProgram;
+extern LLGLSLShader			gDeferredWLCloudProgram;
 
 extern LLGLSLShader			gLuminanceGatherProgram;
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index f64eb89866..964836ff90 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -580,11 +580,6 @@ void LLPipeline::allocatePhysicsBuffer()
 	if (mPhysicsDisplay.getWidth() != resX || mPhysicsDisplay.getHeight() != resY)
 	{
 		mPhysicsDisplay.allocate(resX, resY, GL_RGBA, TRUE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE);
-		if (mSampleBuffer.getWidth() == mPhysicsDisplay.getWidth() && 
-			mSampleBuffer.getHeight() == mPhysicsDisplay.getHeight())
-		{
-			mPhysicsDisplay.setSampleBuffer(&mSampleBuffer);
-		}
 	}
 }
 
@@ -621,16 +616,16 @@ void LLPipeline::allocateScreenBuffer(U32 resX, U32 resY)
 		bool gi = LLViewerShaderMgr::instance()->getVertexShaderLevel(LLViewerShaderMgr::SHADER_DEFERRED);
 
 		//allocate deferred rendering color buffers
-		mDeferredScreen.allocate(resX, resY, GL_RGBA, TRUE, TRUE, LLTexUnit::TT_RECT_TEXTURE, FALSE);
-		mDeferredDepth.allocate(resX, resY, 0, TRUE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE);
+		mDeferredScreen.allocate(resX, resY, GL_RGBA, TRUE, TRUE, LLTexUnit::TT_RECT_TEXTURE, FALSE, samples);
+		mDeferredDepth.allocate(resX, resY, 0, TRUE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE, samples);
 		addDeferredAttachments(mDeferredScreen);
 	
-		mScreen.allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE);		
+		mScreen.allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE, samples);		
 		mEdgeMap.allocate(resX, resY, GL_ALPHA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE);
 
 		if (shadow_detail > 0 || ssao)
 		{ //only need mDeferredLight[0] for shadows OR ssao
-			mDeferredLight[0].allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE);
+			mDeferredLight[0].allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE, samples);
 		}
 		else
 		{
@@ -639,7 +634,7 @@ void LLPipeline::allocateScreenBuffer(U32 resX, U32 resY)
 
 		if (ssao)
 		{ //only need mDeferredLight[1] for ssao
-			mDeferredLight[1].allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE);
+			mDeferredLight[1].allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE, false, samples);
 		}
 		else
 		{
@@ -648,7 +643,7 @@ void LLPipeline::allocateScreenBuffer(U32 resX, U32 resY)
 
 		if (gi)
 		{ //only need mDeferredLight[2] and mGIMapPost for gi
-			mDeferredLight[2].allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE);
+			mDeferredLight[2].allocate(resX, resY, GL_RGBA, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE, false);
 			for (U32 i = 0; i < 2; i++)
 			{
 				mGIMapPost[i].allocate(resX,resY, GL_RGB, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE);
@@ -729,25 +724,6 @@ void LLPipeline::allocateScreenBuffer(U32 resX, U32 resY)
 		mScreen.allocate(resX, resY, GL_RGBA, TRUE, TRUE, LLTexUnit::TT_RECT_TEXTURE, FALSE);		
 	}
 	
-	if (LLRenderTarget::sUseFBO && samples > 1)
-	{ 
-		mSampleBuffer.allocate(resX,resY,GL_RGBA,TRUE,TRUE,LLTexUnit::TT_RECT_TEXTURE,FALSE,samples);
-		if (LLPipeline::sRenderDeferred)
-		{
-			addDeferredAttachments(mSampleBuffer);
-			mDeferredScreen.setSampleBuffer(&mSampleBuffer);
-			mEdgeMap.setSampleBuffer(&mSampleBuffer);
-		}
-
-		mScreen.setSampleBuffer(&mSampleBuffer);
-
-		stop_glerror();
-	}
-	else
-	{
-		mSampleBuffer.release();
-	}
-	
 	if (LLPipeline::sRenderDeferred)
 	{ //share depth buffer between deferred targets
 		mDeferredScreen.shareDepthBuffer(mScreen);
@@ -826,7 +802,6 @@ void LLPipeline::releaseGLBuffers()
 	mScreen.release();
 	mPhysicsDisplay.release();
 	mUIScreen.release();
-	mSampleBuffer.release();
 	mDeferredScreen.release();
 	mDeferredDepth.release();
 	for (U32 i = 0; i < 3; i++)
@@ -6420,11 +6395,10 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 			shader->uniform1f("magnification", magnification);
 		}
 
-		S32 channel = shader->enableTexture(LLViewerShaderMgr::DEFERRED_DIFFUSE, LLTexUnit::TT_RECT_TEXTURE);
+		S32 channel = shader->enableTexture(LLViewerShaderMgr::DEFERRED_DIFFUSE, mScreen.getUsage());
 		if (channel > -1)
 		{
 			mScreen.bindTexture(0, channel);
-			gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_BILINEAR);
 		}
 		//channel = shader->enableTexture(LLViewerShaderMgr::DEFERRED_DEPTH, LLTexUnit::TT_RECT_TEXTURE);
 		//if (channel > -1)
@@ -6567,21 +6541,21 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, U32 light_index, LLRen
 
 	shader.bind();
 	S32 channel = 0;
-	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_DIFFUSE, LLTexUnit::TT_RECT_TEXTURE);
+	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_DIFFUSE, mDeferredScreen.getUsage());
 	if (channel > -1)
 	{
 		mDeferredScreen.bindTexture(0,channel);
 		gGL.getTexUnit(channel)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 	}
 
-	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_SPECULAR, LLTexUnit::TT_RECT_TEXTURE);
+	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_SPECULAR, mDeferredScreen.getUsage());
 	if (channel > -1)
 	{
 		mDeferredScreen.bindTexture(1, channel);
 		gGL.getTexUnit(channel)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 	}
 
-	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_NORMAL, LLTexUnit::TT_RECT_TEXTURE);
+	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_NORMAL, mDeferredScreen.getUsage());
 	if (channel > -1)
 	{
 		mDeferredScreen.bindTexture(2, channel);
@@ -6704,22 +6678,16 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, U32 light_index, LLRen
 			shader.uniformMatrix4fv("gi_norm_mat", 1, FALSE, mGINormalMatrix.m);
 		}
 	}
-	
-	/*channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_POSITION, LLTexUnit::TT_RECT_TEXTURE);
-	if (channel > -1)
-	{
-		mDeferredScreen.bindTexture(3, channel);
-	}*/
+	stop_glerror();
 
-	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_DEPTH, LLTexUnit::TT_RECT_TEXTURE);
+	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_DEPTH, mDeferredDepth.getUsage());
 	if (channel > -1)
 	{
 		gGL.getTexUnit(channel)->bind(&mDeferredDepth, TRUE);
-		gGL.getTexUnit(channel)->setTextureFilteringOption(LLTexUnit::TFO_POINT);
 		stop_glerror();
 		
-		glTexParameteri(LLTexUnit::getInternalType(mDeferredDepth.getUsage()), GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);		
-		glTexParameteri(LLTexUnit::getInternalType(mDeferredDepth.getUsage()), GL_DEPTH_TEXTURE_MODE_ARB, GL_ALPHA);		
+		//glTexParameteri(LLTexUnit::getInternalType(mDeferredDepth.getUsage()), GL_TEXTURE_COMPARE_MODE_ARB, GL_NONE);		
+		//glTexParameteri(LLTexUnit::getInternalType(mDeferredDepth.getUsage()), GL_DEPTH_TEXTURE_MODE_ARB, GL_ALPHA);		
 
 		stop_glerror();
 
@@ -6748,7 +6716,7 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, U32 light_index, LLRen
 
 	stop_glerror();
 
-	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_LIGHT, LLTexUnit::TT_RECT_TEXTURE);
+	channel = shader.enableTexture(LLViewerShaderMgr::DEFERRED_LIGHT, mDeferredLight[light_index].getUsage());
 	if (channel > -1)
 	{
 		mDeferredLight[light_index].bindTexture(0, channel);
@@ -6968,9 +6936,9 @@ void LLPipeline::renderDeferredLighting()
 		}
 
 		//ati doesn't seem to love actually using the stencil buffer on FBO's
-		LLGLEnable stencil(GL_STENCIL_TEST);
-		glStencilFunc(GL_EQUAL, 1, 0xFFFFFFFF);
-		glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+		LLGLDisable stencil(GL_STENCIL_TEST);
+		//glStencilFunc(GL_EQUAL, 1, 0xFFFFFFFF);
+		//glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
 
 		gGL.setColorMask(true, true);
 		
@@ -7789,16 +7757,15 @@ void LLPipeline::setupSpotLight(LLGLSLShader& shader, LLDrawable* drawablep)
 void LLPipeline::unbindDeferredShader(LLGLSLShader &shader)
 {
 	stop_glerror();
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_POSITION, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_NORMAL, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_DIFFUSE, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_SPECULAR, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_DEPTH, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_LIGHT, LLTexUnit::TT_RECT_TEXTURE);
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_NORMAL, mDeferredScreen.getUsage());
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_DIFFUSE, mDeferredScreen.getUsage());
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_SPECULAR, mDeferredScreen.getUsage());
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_DEPTH, mDeferredScreen.getUsage());
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_LIGHT, mDeferredLight[0].getUsage());
 	shader.disableTexture(LLViewerShaderMgr::DEFERRED_GI_LIGHT, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_EDGE, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_SUN_LIGHT, LLTexUnit::TT_RECT_TEXTURE);
-	shader.disableTexture(LLViewerShaderMgr::DEFERRED_LOCAL_LIGHT, LLTexUnit::TT_RECT_TEXTURE);
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_EDGE, mEdgeMap.getUsage());
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_SUN_LIGHT, mDeferredLight[1].getUsage());
+	shader.disableTexture(LLViewerShaderMgr::DEFERRED_LOCAL_LIGHT, mDeferredLight[2].getUsage());
 	shader.disableTexture(LLViewerShaderMgr::DEFERRED_LUMINANCE);
 	shader.disableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
 	shader.disableTexture(LLViewerShaderMgr::DEFERRED_GI_MIP);
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index e9a250cd6d..ed4a803e7e 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -524,7 +524,6 @@ public:
 	LLRenderTarget			mEdgeMap;
 	LLRenderTarget			mDeferredDepth;
 	LLRenderTarget			mDeferredLight[3];
-	LLMultisampleBuffer		mSampleBuffer;
 	LLRenderTarget			mGIMap;
 	LLRenderTarget			mGIMapPost[2];
 	LLRenderTarget			mLuminanceMap;