NORSPEC-246 WIP fix handling of encoded normals with single FP only cards

15 files changed, 1583 insertions, 1228 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
index c030c23515..e8279241d1 100755
--- a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
@@ -64,16 +64,42 @@ vec4 getPosition(vec2 pos_screen)
 	return pos;
 }
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 void main() 
 {
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 8d89485e22..70cc884209 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -1,685 +1,705 @@
-/** 
- * @file materialF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
- 
-#define DIFFUSE_ALPHA_MODE_IGNORE 0
-#define DIFFUSE_ALPHA_MODE_BLEND 1
-#define DIFFUSE_ALPHA_MODE_MASK 2
-#define DIFFUSE_ALPHA_MODE_EMISSIVE 3
-
-uniform float emissive_brightness;
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-#if HAS_SUN_SHADOW
-
-uniform sampler2DShadow shadowMap0;
-uniform sampler2DShadow shadowMap1;
-uniform sampler2DShadow shadowMap2;
-uniform sampler2DShadow shadowMap3;
-
-uniform mat4 shadow_matrix[6];
-uniform vec4 shadow_clip;
-uniform vec2 shadow_res;
-uniform float shadow_bias;
-
-float pcfShadow(sampler2DShadow shadowMap, vec4 stc)
-{
-	stc.xyz /= stc.w;
-	stc.z += shadow_bias;
-		
-	stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here
-	
-	float cs = shadow2D(shadowMap, stc.xyz).x;
-	float shadow = cs;
-	
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
-    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
-                       
-    return shadow*0.2;
-}
-
-#endif
-
-uniform samplerCube environmentMap;
-uniform sampler2D	  lightFunc;
-
-// 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 float haze_horizon;
-uniform float haze_density;
-uniform float cloud_shadow;
-uniform float density_multiplier;
-uniform float distance_multiplier;
-uniform float max_y;
-uniform vec4 glow;
-uniform float scene_light_strength;
-uniform mat3 env_mat;
-uniform mat3 ssao_effect_mat;
-
-uniform vec3 sun_dir;
-VARYING vec2 vary_fragcoord;
-
-VARYING vec3 vary_position;
-
-vec3 vary_PositionEye;
-
-vec3 vary_SunlitColor;
-vec3 vary_AmblitColor;
-vec3 vary_AdditiveColor;
-vec3 vary_AtmosAttenuation;
-
-uniform mat4 inv_proj;
-uniform vec2 screen_res;
-
-uniform vec4 light_position[8];
-uniform vec3 light_direction[8];
-uniform vec3 light_attenuation[8]; 
-uniform vec3 light_diffuse[8];
-
-vec3 calcDirectionalLight(vec3 n, vec3 l)
-{
-	float a = max(dot(n,l),0.0);
-	return vec3(a,a,a);
-}
-
-
-vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spec, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, inout float glare)
-{
-	//get light vector
-	vec3 lv = lp.xyz-v;
-	
-	//get distance
-	float d = dot(lv,lv);
-	
-	float da = 1.0;
-
-	vec3 col = vec3(0,0,0);
-
-	if (d > 0.0 && la > 0.0 && fa > 0.0)
-	{
-		//normalize light vector
-		lv = normalize(lv);
-	
-		//distance attenuation
-		float dist2 = d/la;
-		float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
-
-		// spotlight coefficient.
-		float spot = max(dot(-ln, lv), is_pointlight);
-		da *= spot*spot; // GL_SPOT_EXPONENT=2
-
-		//angular attenuation
-		da *= max(dot(n, lv), 0.0);		
-		
-		float lit = max(da * dist_atten, 0.0);
-
-		col = light_col*lit*diffuse;
-
-		if (spec.a > 0.0)
-		{
-			//vec3 ref = dot(pos+lv, norm);
-			vec3 h = normalize(lv+npos);
-			float nh = dot(n, h);
-			float nv = dot(n, npos);
-			float vh = dot(npos, h);
-			float sa = nh;
-			float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
-
-			float gtdenom = 2 * nh;
-			float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh));
-								
-			if (nh > 0.0)
-			{
-				float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
-				vec3 speccol = lit*scol*light_col.rgb*spec.rgb;
-				col += speccol;
-
-				float cur_glare = max(speccol.r, speccol.g);
-				cur_glare = max(cur_glare, speccol.b);
-				glare = max(glare, speccol.r);
-				glare += max(cur_glare, 0.0);
-				//col += spec.rgb;
-			}
-		}
-	}
-
-	return max(col, vec3(0.0,0.0,0.0));	
-
-}
-
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
-
-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);
-	
-	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 + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
-		//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);
-	blue_weight = blue_density / temp1;
-	haze_weight = vec4(haze_density) / 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;
-
-	// Transparency (-> temp1)
-	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
-	// compiler gets confused.
-	temp1 = exp(-temp1 * temp2.z * distance_multiplier);
-
-	//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 * 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) + tmpAmbient)
-	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
-		  + tmpAmbient)));
-
-	//brightness of surface both sunlight and ambient
-	setSunlitColor(pow(vec3(sunlight * .5), vec3(2.2)) * 2.2);
-	setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(2.2)) * 2.2);
-	setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(2.2)) * 2.2);
-}
-
-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 / vec3(scene_light_strength, scene_light_strength, scene_light_strength));
-}
-
-vec3 scaleUpLight(vec3 light)
-{
-	return (light * vec3(scene_light_strength, scene_light_strength, scene_light_strength));
-}
-
-vec3 atmosAmbient(vec3 light)
-{
-	return getAmblitColor() + (light * vec3(0.5f, 0.5f, 0.5f));
-}
-
-vec3 atmosAffectDirectionalLight(float lightIntensity)
-{
-	return getSunlitColor() * vec3(lightIntensity, lightIntensity, lightIntensity);
-}
-
-vec3 scaleSoftClip(vec3 light)
-{
-	//soft clip effect:
-    vec3 zeroes = vec3(0.0f, 0.0f, 0.0f);
-    vec3 ones   = vec3(1.0f, 1.0f, 1.0f);
-
-	light = ones - clamp(light, zeroes, ones);
-	light = ones - pow(light, gamma.xxx);
-
-	return light;
-}
-
-vec3 fullbrightAtmosTransport(vec3 light) {
-	float brightness = dot(light.rgb, vec3(0.33333));
-
-	return mix(atmosTransport(light.rgb), light.rgb + getAdditiveColor().rgb, brightness * brightness);
-}
-
-vec3 fullbrightScaleSoftClip(vec3 light)
-{
-	//soft clip effect:
-	return light;
-}
-
-#else
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_data[3];
-#else
-#define frag_data gl_FragData
-#endif
-#endif
-
-uniform sampler2D diffuseMap;
-
-#if HAS_NORMAL_MAP
-uniform sampler2D bumpMap;
-#endif
-
-#if HAS_SPECULAR_MAP
-uniform sampler2D specularMap;
-
-VARYING vec2 vary_texcoord2;
-#endif
-
-uniform float env_intensity;
-uniform vec4 specular_color;  // specular color RGB and specular exponent (glossiness) in alpha
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
-uniform float minimum_alpha;
-#endif
-
-#if HAS_NORMAL_MAP
-VARYING vec3 vary_mat0;
-VARYING vec3 vary_mat1;
-VARYING vec3 vary_mat2;
-VARYING vec2 vary_texcoord1;
-#else
-VARYING vec3 vary_normal;
-#endif
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-
-vec2 encode_normal(vec3 n)
-{
-	float f = sqrt(8 * n.z + 8);
-	return n.xy / f + 0.5;
-}
-
-void main() 
-{
-	vec4 diffcol = texture2D(diffuseMap, vary_texcoord0.xy);
-	diffcol.rgb *= vertex_color.rgb;
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
-	if (diffcol.a < minimum_alpha)
-	{
-		discard;
-	}
-#endif
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-	vec3 old_diffcol = diffcol.rgb;
-	diffcol.rgb = pow(diffcol.rgb, vec3(2.2));
-#endif
-
-#if HAS_SPECULAR_MAP
-	vec4 spec = texture2D(specularMap, vary_texcoord2.xy);
-	spec.rgb *= specular_color.rgb;
-#else
-	vec4 spec = vec4(specular_color.rgb, 1.0);
-#endif
-
-#if HAS_NORMAL_MAP
-	vec4 norm = texture2D(bumpMap, vary_texcoord1.xy);
-
-	norm.xyz = norm.xyz * 2 - 1;
-
-	vec3 tnorm = vec3(dot(norm.xyz,vary_mat0),
-			  dot(norm.xyz,vary_mat1),
-			  dot(norm.xyz,vary_mat2));
-#else
-	vec4 norm = vec4(0,0,0,1.0);
-	vec3 tnorm = vary_normal;
-#endif
-
-    norm.xyz = tnorm;
-    norm.xyz = normalize(norm.xyz);
-
-	vec4 final_color = diffcol;
-	
-#if (DIFFUSE_ALPHA_MODE != DIFFUSE_ALPHA_MODE_EMISSIVE)
-	final_color.a = emissive_brightness;
-#else
-	final_color.a = max(final_color.a, emissive_brightness);
-#endif
-
-	vec4 final_specular = spec;
-#if HAS_SPECULAR_MAP
-	vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity * spec.a, 0.0);
-	final_specular.a = specular_color.a * norm.a;
-#else
-	vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity, 0.0);
-	final_specular.a = specular_color.a;
-#endif
-	
-
-#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
-		//forward rendering, output just lit RGBA
-	vec3 pos = vary_position;
-
-#if HAS_SUN_SHADOW
-	float shadow = 0.0;
-	
-	vec4 spos = vec4(pos,1.0);
-		
-	if (spos.z > -shadow_clip.w)
-	{	
-		vec4 lpos;
-		
-		vec4 near_split = shadow_clip*-0.75;
-		vec4 far_split = shadow_clip*-1.25;
-		vec4 transition_domain = near_split-far_split;
-		float weight = 0.0;
-
-		if (spos.z < near_split.z)
-		{
-			lpos = shadow_matrix[3]*spos;
-			
-			float w = 1.0;
-			w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
-			shadow += pcfShadow(shadowMap3, lpos)*w;
-			weight += w;
-			shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
-		}
-
-		if (spos.z < near_split.y && spos.z > far_split.z)
-		{
-			lpos = shadow_matrix[2]*spos;
-			
-			float w = 1.0;
-			w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
-			w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
-			shadow += pcfShadow(shadowMap2, lpos)*w;
-			weight += w;
-		}
-
-		if (spos.z < near_split.x && spos.z > far_split.y)
-		{
-			lpos = shadow_matrix[1]*spos;
-			
-			float w = 1.0;
-			w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
-			w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
-			shadow += pcfShadow(shadowMap1, lpos)*w;
-			weight += w;
-		}
-
-		if (spos.z > far_split.x)
-		{
-			lpos = shadow_matrix[0]*spos;
-							
-			float w = 1.0;
-			w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
-				
-			shadow += pcfShadow(shadowMap0, lpos)*w;
-			weight += w;
-		}
-		
-
-		shadow /= weight;
-	}
-	else
-	{
-		shadow = 1.0;
-	}
-#else
-	float shadow = 1.0;
-#endif
-
-	spec = final_specular;
-		vec4 diffuse = final_color;
-		float envIntensity = final_normal.z;
-
-    vec3 col = vec3(0.0f,0.0f,0.0f);
-
-		float bloom = 0.0;
-			calcAtmospherics(pos.xyz, 1.0);
-	
-	vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
-
-	float da =dot(norm.xyz, sun_dir.xyz);
-    float final_da = da;
-          final_da = min(final_da, shadow);
-          final_da = max(final_da, diffuse.a);
-          final_da = max(final_da, 0.0f);
-
-	col.rgb = atmosAmbient(col);
-	
-	float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
-	ambient *= 0.5;
-	ambient *= ambient;
-	ambient = (1.0-ambient);
-
-	col.rgb *= ambient;
-
-	col.rgb = col.rgb + atmosAffectDirectionalLight(final_da * 2.6);
-	col.rgb *= diffuse.rgb;
-	
-
-			float glare = 0.0;
-
-			if (spec.a > 0.0) // specular reflection
-			{
-				// the old infinite-sky shiny reflection
-				//
-				
-				float sa = dot(refnormpersp, sun_dir.xyz);
-				vec3 dumbshiny = vary_SunlitColor*shadow*(texture2D(lightFunc, vec2(sa, spec.a)).r);
-							
-				// add the two types of shiny together
-				vec3 spec_contrib = dumbshiny * spec.rgb;
-				bloom = dot(spec_contrib, spec_contrib) / 6;
-
-				glare = max(spec_contrib.r, spec_contrib.g);
-				glare = max(glare, spec_contrib.b);
-
-				col += spec_contrib;
-			}
-
-			col = mix(col.rgb, old_diffcol.rgb, diffuse.a);
-
-			if (envIntensity > 0.0)
-			{
-				//add environmentmap
-				vec3 env_vec = env_mat * refnormpersp;
-				float exponent = mix(2.2, 1.0, diffuse.a);
-
-				vec3 refcol = pow(textureCube(environmentMap, env_vec).rgb, vec3(exponent))*exponent;
-
-				col = mix(col.rgb, refcol, 
-					envIntensity);  
-
-				float cur_glare = max(refcol.r, refcol.g);
-				cur_glare = max(cur_glare, refcol.b);
-				cur_glare *= envIntensity*4.0;
-				glare += cur_glare;
-			}
-
-			float exponent = mix(1.0, 2.2, diffuse.a);
-			col = pow(col, vec3(exponent));
-				
-	
-			col = mix(atmosLighting(col), fullbrightAtmosTransport(col), diffuse.a);
-			col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);
-
-			
-		vec3 npos = normalize(-pos.xyz);
-
- #define LIGHT_LOOP(i) col.rgb = col.rgb + calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm.xyz, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, glare);
-
-		LIGHT_LOOP(1)
-		LIGHT_LOOP(2)
-		LIGHT_LOOP(3)
-		LIGHT_LOOP(4)
-		LIGHT_LOOP(5)
-		LIGHT_LOOP(6)
-		LIGHT_LOOP(7)
-
-
-	col.rgb = pow(col.rgb, vec3(1.0/2.2));
-
-	frag_color.rgb = col.rgb;
-	glare = min(glare, 1.0);
-	frag_color.a = max(diffcol.a*vertex_color.a, glare);
-#else
-
-	frag_data[0] = final_color;
-
-#ifdef UGLY_MAC_HACK
-	// magic spec exp clamp fixes rendering artifacts on older mac GF drivers
-	//
-	final_specular = min(final_specular, vec4(1.0f, 1.0f, 1.0f, 0.125f));
-#endif
-
-	frag_data[1] = final_specular; // XYZ = Specular color. W = Specular exponent.
-	frag_data[2] = final_normal; // XY = Normal.  Z = Env. intensity.
-#endif
-}
+/** 

+ * @file materialF.glsl

+ *

+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$

+ * Second Life Viewer Source Code

+ * Copyright (C) 2007, 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

+ * $/LicenseInfo$

+ */

+ 

+#define DIFFUSE_ALPHA_MODE_IGNORE	0

+#define DIFFUSE_ALPHA_MODE_BLEND	1

+#define DIFFUSE_ALPHA_MODE_MASK		2

+#define DIFFUSE_ALPHA_MODE_EMISSIVE 3

+

+uniform float emissive_brightness;

+

+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)

+

+#ifdef DEFINE_GL_FRAGCOLOR

+out vec4 frag_color;

+#else

+#define frag_color gl_FragColor

+#endif

+

+#if HAS_SUN_SHADOW

+

+uniform sampler2DShadow shadowMap0;

+uniform sampler2DShadow shadowMap1;

+uniform sampler2DShadow shadowMap2;

+uniform sampler2DShadow shadowMap3;

+

+uniform mat4 shadow_matrix[6];

+uniform vec4 shadow_clip;

+uniform vec2 shadow_res;

+uniform float shadow_bias;

+

+float pcfShadow(sampler2DShadow shadowMap, vec4 stc)

+{

+	stc.xyz /= stc.w;

+	stc.z += shadow_bias;

+		

+	stc.x = floor(stc.x*shadow_res.x + fract(stc.y*shadow_res.y*12345))/shadow_res.x; // add some chaotic jitter to X sample pos according to Y to disguise the snapping going on here

+	

+	float cs = shadow2D(shadowMap, stc.xyz).x;

+	float shadow = cs;

+	

+    shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;

+    shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;

+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;

+    shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;

+                       

+    return shadow*0.2;

+}

+

+#endif

+

+uniform samplerCube environmentMap;

+uniform sampler2D	  lightFunc;

+

+// 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 float haze_horizon;

+uniform float haze_density;

+uniform float cloud_shadow;

+uniform float density_multiplier;

+uniform float distance_multiplier;

+uniform float max_y;

+uniform vec4 glow;

+uniform float scene_light_strength;

+uniform mat3 env_mat;

+uniform mat3 ssao_effect_mat;

+

+uniform vec3 sun_dir;

+VARYING vec2 vary_fragcoord;

+

+VARYING vec3 vary_position;

+

+vec3 vary_PositionEye;

+

+vec3 vary_SunlitColor;

+vec3 vary_AmblitColor;

+vec3 vary_AdditiveColor;

+vec3 vary_AtmosAttenuation;

+

+uniform mat4 inv_proj;

+uniform vec2 screen_res;

+

+uniform vec4 light_position[8];

+uniform vec3 light_direction[8];

+uniform vec3 light_attenuation[8]; 

+uniform vec3 light_diffuse[8];

+

+vec3 calcDirectionalLight(vec3 n, vec3 l)

+{

+	float a = max(dot(n,l),0.0);

+	return vec3(a,a,a);

+}

+

+

+vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spec, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, inout float glare)

+{

+	//get light vector

+	vec3 lv = lp.xyz-v;

+	

+	//get distance

+	float d = dot(lv,lv);

+	

+	float da = 1.0;

+

+	vec3 col = vec3(0,0,0);

+

+	if (d > 0.0 && la > 0.0 && fa > 0.0)

+	{

+		//normalize light vector

+		lv = normalize(lv);

+	

+		//distance attenuation

+		float dist2 = d/la;

+		float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);

+

+		// spotlight coefficient.

+		float spot = max(dot(-ln, lv), is_pointlight);

+		da *= spot*spot; // GL_SPOT_EXPONENT=2

+

+		//angular attenuation

+		da *= max(dot(n, lv), 0.0);		

+		

+		float lit = max(da * dist_atten, 0.0);

+

+		col = light_col*lit*diffuse;

+

+		if (spec.a > 0.0)

+		{

+			//vec3 ref = dot(pos+lv, norm);

+			vec3 h = normalize(lv+npos);

+			float nh = dot(n, h);

+			float nv = dot(n, npos);

+			float vh = dot(npos, h);

+			float sa = nh;

+			float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;

+

+			float gtdenom = 2 * nh;

+			float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh));

+								

+			if (nh > 0.0)

+			{

+				float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);

+				vec3 speccol = lit*scol*light_col.rgb*spec.rgb;

+				col += speccol;

+

+				float cur_glare = max(speccol.r, speccol.g);

+				cur_glare = max(cur_glare, speccol.b);

+				glare = max(glare, speccol.r);

+				glare += max(cur_glare, 0.0);

+				//col += spec.rgb;

+			}

+		}

+	}

+

+	return max(col, vec3(0.0,0.0,0.0));	

+

+}

+

+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);

+	

+	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 + vec4(haze_density * 0.25)) * (density_multiplier * max_y);

+		//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);

+	blue_weight = blue_density / temp1;

+	haze_weight = vec4(haze_density) / 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;

+

+	// Transparency (-> temp1)

+	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati

+	// compiler gets confused.

+	temp1 = exp(-temp1 * temp2.z * distance_multiplier);

+

+	//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 * 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) + tmpAmbient)

+	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x

+		  + tmpAmbient)));

+

+	//brightness of surface both sunlight and ambient

+	setSunlitColor(pow(vec3(sunlight * .5), vec3(2.2)) * 2.2);

+	setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(2.2)) * 2.2);

+	setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(2.2)) * 2.2);

+}

+

+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 / vec3(scene_light_strength, scene_light_strength, scene_light_strength));

+}

+

+vec3 scaleUpLight(vec3 light)

+{

+	return (light * vec3(scene_light_strength, scene_light_strength, scene_light_strength));

+}

+

+vec3 atmosAmbient(vec3 light)

+{

+	return getAmblitColor() + (light * vec3(0.5f, 0.5f, 0.5f));

+}

+

+vec3 atmosAffectDirectionalLight(float lightIntensity)

+{

+	return getSunlitColor() * vec3(lightIntensity, lightIntensity, lightIntensity);

+}

+

+vec3 scaleSoftClip(vec3 light)

+{

+	//soft clip effect:

+    vec3 zeroes = vec3(0.0f, 0.0f, 0.0f);

+    vec3 ones   = vec3(1.0f, 1.0f, 1.0f);

+

+	light = ones - clamp(light, zeroes, ones);

+	light = ones - pow(light, gamma.xxx);

+

+	return light;

+}

+

+vec3 fullbrightAtmosTransport(vec3 light) {

+	float brightness = dot(light.rgb, vec3(0.33333));

+

+	return mix(atmosTransport(light.rgb), light.rgb + getAdditiveColor().rgb, brightness * brightness);

+}

+

+vec3 fullbrightScaleSoftClip(vec3 light)

+{

+	//soft clip effect:

+	return light;

+}

+

+#else

+#ifdef DEFINE_GL_FRAGCOLOR

+out vec4 frag_data[3];

+#else

+#define frag_data gl_FragData

+#endif

+#endif

+

+uniform sampler2D diffuseMap;

+

+#if HAS_NORMAL_MAP

+uniform sampler2D bumpMap;

+#endif

+

+#if HAS_SPECULAR_MAP

+uniform sampler2D specularMap;

+

+VARYING vec2 vary_texcoord2;

+#endif

+

+uniform float env_intensity;

+uniform vec4 specular_color;  // specular color RGB and specular exponent (glossiness) in alpha

+

+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)

+uniform float minimum_alpha;

+#endif

+

+#if HAS_NORMAL_MAP

+VARYING vec3 vary_mat0;

+VARYING vec3 vary_mat1;

+VARYING vec3 vary_mat2;

+VARYING vec2 vary_texcoord1;

+#else

+VARYING vec3 vary_normal;

+#endif

+

+VARYING vec4 vertex_color;

+VARYING vec2 vary_texcoord0;

+

+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif

+

+void main() 

+{

+	vec4 diffcol = texture2D(diffuseMap, vary_texcoord0.xy);

+	diffcol.rgb *= vertex_color.rgb;

+

+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)

+	if (diffcol.a < minimum_alpha)

+	{

+		discard;

+	}

+#endif

+

+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)

+	vec3 old_diffcol = diffcol.rgb;

+	diffcol.rgb = pow(diffcol.rgb, vec3(2.2));

+#endif

+

+#if HAS_SPECULAR_MAP

+	vec4 spec = texture2D(specularMap, vary_texcoord2.xy);

+	spec.rgb *= specular_color.rgb;

+#else

+	vec4 spec = vec4(specular_color.rgb, 1.0);

+#endif

+

+#if HAS_NORMAL_MAP

+	vec4 norm = texture2D(bumpMap, vary_texcoord1.xy);

+

+	norm.xyz = norm.xyz * 2 - 1;

+

+	vec3 tnorm = vec3(dot(norm.xyz,vary_mat0),

+			  dot(norm.xyz,vary_mat1),

+			  dot(norm.xyz,vary_mat2));

+#else

+	vec4 norm = vec4(0,0,0,1.0);

+	vec3 tnorm = vary_normal;

+#endif

+

+    norm.xyz = tnorm;

+    norm.xyz = normalize(norm.xyz);

+

+	vec4 final_color = diffcol;

+	

+#if (DIFFUSE_ALPHA_MODE != DIFFUSE_ALPHA_MODE_EMISSIVE)

+	final_color.a = emissive_brightness;

+#else

+	final_color.a = max(final_color.a, emissive_brightness);

+#endif

+

+	vec4 final_specular = spec;

+#if HAS_SPECULAR_MAP

+	vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity * spec.a, 0.0);

+	final_specular.a = specular_color.a * norm.a;

+#else

+	vec4 final_normal = vec4(encode_normal(normalize(tnorm)), env_intensity, 0.0);

+	final_specular.a = specular_color.a;

+#endif

+	

+

+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)

+		//forward rendering, output just lit RGBA

+	vec3 pos = vary_position;

+

+#if HAS_SUN_SHADOW

+	float shadow = 0.0;

+	

+	vec4 spos = vec4(pos,1.0);

+		

+	if (spos.z > -shadow_clip.w)

+	{	

+		vec4 lpos;

+		

+		vec4 near_split = shadow_clip*-0.75;

+		vec4 far_split = shadow_clip*-1.25;

+		vec4 transition_domain = near_split-far_split;

+		float weight = 0.0;

+

+		if (spos.z < near_split.z)

+		{

+			lpos = shadow_matrix[3]*spos;

+			

+			float w = 1.0;

+			w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;

+			shadow += pcfShadow(shadowMap3, lpos)*w;

+			weight += w;

+			shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);

+		}

+

+		if (spos.z < near_split.y && spos.z > far_split.z)

+		{

+			lpos = shadow_matrix[2]*spos;

+			

+			float w = 1.0;

+			w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;

+			w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;

+			shadow += pcfShadow(shadowMap2, lpos)*w;

+			weight += w;

+		}

+

+		if (spos.z < near_split.x && spos.z > far_split.y)

+		{

+			lpos = shadow_matrix[1]*spos;

+			

+			float w = 1.0;

+			w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;

+			w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;

+			shadow += pcfShadow(shadowMap1, lpos)*w;

+			weight += w;

+		}

+

+		if (spos.z > far_split.x)

+		{

+			lpos = shadow_matrix[0]*spos;

+							

+			float w = 1.0;

+			w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;

+				

+			shadow += pcfShadow(shadowMap0, lpos)*w;

+			weight += w;

+		}

+		

+

+		shadow /= weight;

+	}

+	else

+	{

+		shadow = 1.0;

+	}

+#else

+	float shadow = 1.0;

+#endif

+

+	spec = final_specular;

+	vec4 diffuse = final_color;

+	float envIntensity = final_normal.z;

+

+    vec3 col = vec3(0.0f,0.0f,0.0f);

+

+	float bloom = 0.0;

+	calcAtmospherics(pos.xyz, 1.0);

+	

+	vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));

+

+	float da =dot(norm.xyz, sun_dir.xyz);

+    float final_da = da;

+          final_da = min(final_da, shadow);

+          final_da = max(final_da, diffuse.a);

+          final_da = max(final_da, 0.0f);

+

+	col.rgb = atmosAmbient(col);

+	

+	float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);

+	ambient *= 0.5;

+	ambient *= ambient;

+	ambient = (1.0-ambient);

+

+	col.rgb *= ambient;

+

+	col.rgb = col.rgb + atmosAffectDirectionalLight(final_da * 2.6);

+	col.rgb *= diffuse.rgb;

+	

+

+	float glare = 0.0;

+

+	if (spec.a > 0.0) // specular reflection

+	{

+		// the old infinite-sky shiny reflection

+		//

+				

+		float sa = dot(refnormpersp, sun_dir.xyz);

+		vec3 dumbshiny = vary_SunlitColor*shadow*(texture2D(lightFunc, vec2(sa, spec.a)).r);

+							

+		// add the two types of shiny together

+		vec3 spec_contrib = dumbshiny * spec.rgb;

+		bloom = dot(spec_contrib, spec_contrib) / 6;

+

+		glare = max(spec_contrib.r, spec_contrib.g);

+		glare = max(glare, spec_contrib.b);

+

+		col += spec_contrib;

+	}

+

+	col = mix(col.rgb, old_diffcol.rgb, diffuse.a);

+

+	if (envIntensity > 0.0)

+	{

+		//add environmentmap

+		vec3 env_vec = env_mat * refnormpersp;

+		float exponent = mix(2.2, 1.0, diffuse.a);

+

+		vec3 refcol = pow(textureCube(environmentMap, env_vec).rgb, vec3(exponent))*exponent;

+

+		col = mix(col.rgb, refcol, 

+			envIntensity);  

+

+		float cur_glare = max(refcol.r, refcol.g);

+		cur_glare = max(cur_glare, refcol.b);

+		cur_glare *= envIntensity*4.0;

+		glare += cur_glare;

+	}

+

+	float exponent = mix(1.0, 2.2, diffuse.a);

+	col = pow(col, vec3(exponent));

+				

+	

+	col = mix(atmosLighting(col), fullbrightAtmosTransport(col), diffuse.a);

+	col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);

+

+			

+	vec3 npos = normalize(-pos.xyz);

+

+ #define LIGHT_LOOP(i) col.rgb = col.rgb + calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm.xyz, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z, glare);

+

+		LIGHT_LOOP(1)

+		LIGHT_LOOP(2)

+		LIGHT_LOOP(3)

+		LIGHT_LOOP(4)

+		LIGHT_LOOP(5)

+		LIGHT_LOOP(6)

+		LIGHT_LOOP(7)

+

+

+	col.rgb = pow(col.rgb, vec3(1.0/2.2));

+

+	frag_color.rgb = col.rgb;

+	glare = min(glare, 1.0);

+	frag_color.a = max(diffcol.a,glare)*vertex_color.a;

+

+#else

+	frag_data[0] = final_color;

+

+#ifdef SINGLE_FP_ONLY

+	// "Not so HD" range on older cards; make it fit!

+	//

+	final_specular = final_specular * vec4(0.25f);

+#endif

+

+	frag_data[1] = final_specular; // XYZ = Specular color. W = Specular exponent.

+	frag_data[2] = final_normal; // XY = Normal.  Z = Env. intensity.

+#endif

+}

diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
index 338532e71d..0d86840c1c 100755
--- a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
@@ -56,16 +56,42 @@ uniform float far_z;
 
 uniform mat4 inv_proj;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 getPosition(vec2 pos_screen)
 {
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index 79f94fb131..f4d174729d 100755
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -67,16 +67,42 @@ uniform vec2 screen_res;
 
 uniform mat4 inv_proj;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 correctWithGamma(vec4 col)
 {
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
index 69cdb2ce71..1313ba582f 100755
--- a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
@@ -54,16 +54,42 @@ uniform vec2 screen_res;
 uniform mat4 inv_proj;
 uniform vec4 viewport;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 getPosition(vec2 pos_screen)
 {
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
index 2d6bce02c9..d4803f9aed 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredGammaCorrect.glsl
@@ -1,46 +1,46 @@
-/** 
- * @file postDeferredGammaCorrect.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
- 
-#extension GL_ARB_texture_rectangle : enable
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform sampler2DRect diffuseRect;
-
-uniform vec2 screen_res;
-VARYING vec2 vary_fragcoord;
-
-uniform float texture_gamma;
-
-void main() 
-{
-	vec4 diff = texture2DRect(diffuseRect, vary_fragcoord);
-	frag_color = pow(diff, vec4(texture_gamma, texture_gamma, texture_gamma, 1.0));
-}
-
+/** 

+ * @file postDeferredGammaCorrect.glsl

+ *

+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$

+ * Second Life Viewer Source Code

+ * Copyright (C) 2007, 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

+ * $/LicenseInfo$

+ */

+ 

+#extension GL_ARB_texture_rectangle : enable

+

+#ifdef DEFINE_GL_FRAGCOLOR

+out vec4 frag_color;

+#else

+#define frag_color gl_FragColor

+#endif

+

+uniform sampler2DRect diffuseRect;

+

+uniform vec2 screen_res;

+VARYING vec2 vary_fragcoord;

+

+uniform float texture_gamma;

+

+void main() 

+{

+	vec4 diff = texture2DRect(diffuseRect, vary_fragcoord);

+	frag_color = pow(diff, vec4(texture_gamma, texture_gamma, texture_gamma, 1.0f));

+}

+

diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 45d672c290..3e3e0a5a5d 100755
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -1,379 +1,393 @@
-/** 
- * @file softenLightF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
- 
-#extension GL_ARB_texture_rectangle : enable
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform sampler2DRect diffuseRect;
-uniform sampler2DRect specularRect;
-uniform sampler2DRect positionMap;
-uniform sampler2DRect normalMap;
-uniform sampler2DRect lightMap;
-uniform sampler2DRect depthMap;
-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 float haze_horizon;
-uniform float haze_density;
-uniform float cloud_shadow;
-uniform float density_multiplier;
-uniform float distance_multiplier;
-uniform float max_y;
-uniform vec4 glow;
-uniform float global_gamma;
-uniform float scene_light_strength;
-uniform mat3 env_mat;
-uniform mat3 ssao_effect_mat;
-
-uniform vec3 sun_dir;
-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;
-
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
-
-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;
-}
-
-vec4 getPosition(vec2 pos_screen)
-{ //get position in screen space (world units) given window coordinate and depth map
-	float depth = texture2DRect(depthMap, pos_screen.xy).a;
-	return getPosition_d(pos_screen, depth);
-}
-
-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);
-	
-	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 + vec4(haze_density * 0.25)) * (density_multiplier * max_y);
-		//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);
-	blue_weight = blue_density / temp1;
-	haze_weight = vec4(haze_density) / 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;
-
-	// Transparency (-> temp1)
-	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati
-	// compiler gets confused.
-	temp1 = exp(-temp1 * temp2.z * distance_multiplier);
-
-	//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 * 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) + tmpAmbient)
-	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
-		  + tmpAmbient)));
-
-	//brightness of surface both sunlight and ambient
-	setSunlitColor(pow(vec3(sunlight * .5), vec3(global_gamma)) * global_gamma);
-	setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(global_gamma)) * global_gamma);
-	setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(global_gamma)) * global_gamma);
-}
-
-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 fullbrightAtmosTransport(vec3 light) {
-	float brightness = dot(light.rgb, vec3(0.33333));
-
-	return mix(atmosTransport(light.rgb), light.rgb + getAdditiveColor().rgb, brightness * brightness);
-}
-
-
-
-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;
-}
-
-
-vec3 fullbrightScaleSoftClip(vec3 light)
-{
-	//soft clip effect:
-	return light;
-}
-
-void main() 
-{
-	vec2 tc = vary_fragcoord.xy;
-	float depth = texture2DRect(depthMap, tc.xy).r;
-	vec3 pos = getPosition_d(tc, depth).xyz;
-	vec4 norm = texture2DRect(normalMap, tc);
-	float envIntensity = norm.z;
-	norm.xyz = decode_normal(norm.xy); // unpack norm
-		
-	float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
-
-	vec4 diffuse = texture2DRect(diffuseRect, tc);
-	vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);
-	vec3 col;
-	float bloom = 0.0;
-	{
-		calcAtmospherics(pos.xyz, 1.0);
-	
-		col = atmosAmbient(vec3(0));
-		float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);
-		ambient *= 0.5;
-		ambient *= ambient;
-		ambient = (1.0-ambient);
-
-		col.rgb *= ambient;
-
-		col += atmosAffectDirectionalLight(max(min(da, 1.0) * 2.6, 0.0));
-	
-		col *= diffuse.rgb;
-	
-		vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
-
-		if (spec.a > 0.0) // specular reflection
-		{
-			// the old infinite-sky shiny reflection
-			//
-			
-			float sa = dot(refnormpersp, sun_dir.xyz);
-			vec3 dumbshiny = vary_SunlitColor*(texture2D(lightFunc, vec2(sa, spec.a)).r);
-			
-			// add the two types of shiny together
-			vec3 spec_contrib = dumbshiny * spec.rgb;
-			bloom = dot(spec_contrib, spec_contrib) / 6;
-			col += spec_contrib;
-		}
-	
-		
-		col = mix(col.rgb, pow(diffuse.rgb, vec3(1.0/2.2)), diffuse.a);
-		
-		
-		if (envIntensity > 0.0)
-		{ //add environmentmap
-			vec3 env_vec = env_mat * refnormpersp;
-			
-			float exponent = mix(2.2, 1.0, diffuse.a);
-			vec3 refcol = pow(textureCube(environmentMap, env_vec).rgb, vec3(exponent))*exponent;
-
-			col = mix(col.rgb, refcol, 
-				envIntensity);  
-
-		}
-
-		float exponent = mix(1.0, 2.2, diffuse.a);
-		col = pow(col, vec3(exponent));
-				
-		if (norm.w < 0.5)
-		{
-			col = mix(atmosLighting(col), fullbrightAtmosTransport(col), diffuse.a);
-			col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);
-		}
-
-		//col = vec3(1,0,1);
-		//col.g = envIntensity;
-	}
-	
-	frag_color.rgb = col;
-
-	frag_color.a = bloom;
-}
+/** 

+ * @file softenLightF.glsl

+ *

+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$

+ * Second Life Viewer Source Code

+ * Copyright (C) 2007, 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

+ * $/LicenseInfo$

+ */

+ 

+#extension GL_ARB_texture_rectangle : enable

+

+#ifdef DEFINE_GL_FRAGCOLOR

+out vec4 frag_color;

+#else

+#define frag_color gl_FragColor

+#endif

+

+uniform sampler2DRect diffuseRect;

+uniform sampler2DRect specularRect;

+uniform sampler2DRect positionMap;

+uniform sampler2DRect normalMap;

+uniform sampler2DRect lightMap;

+uniform sampler2DRect depthMap;

+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 float haze_horizon;

+uniform float haze_density;

+uniform float cloud_shadow;

+uniform float density_multiplier;

+uniform float distance_multiplier;

+uniform float max_y;

+uniform vec4 glow;

+uniform float global_gamma;

+uniform float scene_light_strength;

+uniform mat3 env_mat;

+uniform mat3 ssao_effect_mat;

+

+uniform vec3 sun_dir;

+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;

+

+#ifdef SINGLE_FP_ONLY

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return normalize(n);

+}

+#else

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif

+

+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;

+}

+

+vec4 getPosition(vec2 pos_screen)

+{ //get position in screen space (world units) given window coordinate and depth map

+	float depth = texture2DRect(depthMap, pos_screen.xy).a;

+	return getPosition_d(pos_screen, depth);

+}

+

+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);

+	

+	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 + vec4(haze_density * 0.25)) * (density_multiplier * max_y);

+		//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);

+	blue_weight = blue_density / temp1;

+	haze_weight = vec4(haze_density) / 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;

+

+	// Transparency (-> temp1)

+	// ATI Bugfix -- can't store temp1*temp2.z*distance_multiplier in a variable because the ati

+	// compiler gets confused.

+	temp1 = exp(-temp1 * temp2.z * distance_multiplier);

+

+	//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 * 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) + tmpAmbient)

+	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x

+		  + tmpAmbient)));

+

+	//brightness of surface both sunlight and ambient

+	setSunlitColor(pow(vec3(sunlight * .5), vec3(global_gamma)) * global_gamma);

+	setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(global_gamma)) * global_gamma);

+	setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(global_gamma)) * global_gamma);

+}

+

+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 fullbrightAtmosTransport(vec3 light) {

+	float brightness = dot(light.rgb, vec3(0.33333));

+

+	return mix(atmosTransport(light.rgb), light.rgb + getAdditiveColor().rgb, brightness * brightness);

+}

+

+

+

+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;

+}

+

+

+vec3 fullbrightScaleSoftClip(vec3 light)

+{

+	//soft clip effect:

+	return light;

+}

+

+void main() 

+{

+	vec2 tc = vary_fragcoord.xy;

+	float depth = texture2DRect(depthMap, tc.xy).r;

+	vec3 pos = getPosition_d(tc, depth).xyz;

+	vec4 norm = texture2DRect(normalMap, tc);

+	float envIntensity = norm.z;

+	norm.xyz = decode_normal(norm.xy); // unpack norm

+		

+	float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);

+

+	vec4 diffuse = texture2DRect(diffuseRect, tc);

+	vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);

+	vec3 col;

+	float bloom = 0.0;

+	{

+		calcAtmospherics(pos.xyz, 1.0);

+	

+		col = atmosAmbient(vec3(0));

+		float ambient = min(abs(dot(norm.xyz, sun_dir.xyz)), 1.0);

+		ambient *= 0.5;

+		ambient *= ambient;

+		ambient = (1.0-ambient);

+

+		col.rgb *= ambient;

+

+		col += atmosAffectDirectionalLight(max(min(da, 1.0) * 2.6, 0.0));

+	

+		col *= diffuse.rgb;

+	

+		vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));

+

+		if (spec.a > 0.0) // specular reflection

+		{

+			// the old infinite-sky shiny reflection

+			//

+			

+			float sa = dot(refnormpersp, sun_dir.xyz);

+			vec3 dumbshiny = vary_SunlitColor*(texture2D(lightFunc, vec2(sa, spec.a)).r);

+			

+			// add the two types of shiny together

+			vec3 spec_contrib = dumbshiny * spec.rgb;

+			bloom = dot(spec_contrib, spec_contrib) / 6;

+			col += spec_contrib;

+		}

+		

+		

+		col = mix(col.rgb, pow(diffuse.rgb, vec3(1.0/2.2)), diffuse.a);

+		

+		

+		if (envIntensity > 0.0)

+		{ //add environmentmap

+			vec3 env_vec = env_mat * refnormpersp;

+			

+			float exponent = mix(2.2, 1.0, diffuse.a);

+			vec3 refcol = pow(textureCube(environmentMap, env_vec).rgb, vec3(exponent))*exponent;

+

+			col = mix(col.rgb, refcol, 

+				envIntensity);  

+

+		}

+

+		float exponent = mix(1.0, 2.2, diffuse.a);

+		col = pow(col, vec3(exponent));

+				

+		if (norm.w < 0.5)

+		{

+			col = mix(atmosLighting(col), fullbrightAtmosTransport(col), diffuse.a);

+			col = mix(scaleSoftClip(col), fullbrightScaleSoftClip(col), diffuse.a);

+		}

+

+		//col = vec3(1,0,1);

+		//col.g = envIntensity;

+	}

+	

+	frag_color.rgb = col;

+

+	frag_color.a = bloom;

+}

diff --git a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
index c918a42c73..adfe012e4d 100755
--- a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -65,16 +65,42 @@ uniform vec2 screen_res;
 
 uniform mat4 inv_proj;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 correctWithGamma(vec4 col)
 {
diff --git a/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl
index 1470239a71..7fcbb1aa85 100755
--- a/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/sunLightSSAOF.glsl
@@ -49,16 +49,42 @@ VARYING vec2 vary_fragcoord;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 getPosition(vec2 pos_screen)
 {
diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index a6b0f7e7c1..f7023be150 100755
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -68,16 +68,42 @@ uniform vec2 screen_res;
 
 uniform mat4 inv_proj;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 correctWithGamma(vec4 col)
 {
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index 31b2a32f7f..6e35641277 100755
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -78,16 +78,42 @@ vec3 vary_AtmosAttenuation;
 uniform mat4 inv_proj;
 uniform vec2 screen_res;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 getPosition_d(vec2 pos_screen, float depth)
 {
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
index 91ff1f1e76..0436c80710 100755
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -68,16 +68,42 @@ uniform vec2 screen_res;
 
 uniform mat4 inv_proj;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 correctWithGamma(vec4 col)
 {
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index fa2f415e15..640701572d 100755
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -65,16 +65,42 @@ uniform float shadow_offset;
 uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 getPosition(vec2 pos_screen)
 {
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
index 847fea6c08..6db26cec4c 100755
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
@@ -66,16 +66,42 @@ uniform float shadow_offset;
 uniform float spot_shadow_bias;
 uniform float spot_shadow_offset;
 
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
+#ifdef SINGLE_FP_ONLY

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(2 * n.z + 2);

+	return (n.xy / vec2(f)) + vec2(0.5f);

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc - 0.5f;

+    float f = dot(fenc,fenc);

+    f = clamp(f,0.0f,1.0f);

+    float g = sqrt(1-f);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1.0f - (f * 0.5f);

+    return normalize(n);

+}

+#else

+vec2 encode_normal(vec3 n)

+{

+	float f = sqrt(8 * n.z + 8);

+	return n.xy / f + 0.5;

+}

+

+vec3 decode_normal (vec2 enc)

+{

+    vec2 fenc = enc*4-2;

+    float f = dot(fenc,fenc);

+    float g = sqrt(1-f/4);

+    vec3 n;

+    n.xy = fenc*g;

+    n.z = 1-f/2;

+    return n;

+}

+#endif
 
 vec4 getPosition(vec2 pos_screen)
 {
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 9e2a0d74db..ff9b28bc37 100755
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -44,6 +44,18 @@
 
 #if LL_DARWIN
 #include "OpenGL/OpenGL.h"
+
+// include spec exp clamp to fix older mac rendering artifacts
+//
+#define SINGLE_FP_PERMUTATION(shader)					\
+	if (gGLManager.mIsMobileGF)							\
+	{																\
+		shader[i].addPermutation("SINGLE_FP_ONLY","1");		\
+	}
+
+
+#else
+#define SINGLE_FP_PERMUTATION(shader)
 #endif
 
 #ifdef LL_RELEASE_FOR_DOWNLOAD
@@ -1292,14 +1304,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			bool has_skin = i & 0x10;
 			gDeferredMaterialProgram[i].addPermutation("HAS_SKIN",has_skin ? "1" : "0");
 
-		#if LL_DARWIN
-			// include spec exp clamp to fix older mac rendering artifacts
-			//
-			if (gGLManager.mIsMobileGF)
-			{
-				gDeferredMaterialProgram[i].addPermutation("UGLY_MAC_HACK","1");
-			}
-		#endif
+			SINGLE_FP_PERMUTATION(gDeferredMaterialProgram);
 
 			if (has_skin)
 			{
@@ -1358,6 +1363,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredLightProgram.mShaderFiles.push_back(make_pair("deferred/pointLightV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredLightProgram.mShaderFiles.push_back(make_pair("deferred/pointLightF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
+		SINGLE_FP_PERMUTATION(gDeferredLightProgram);
+
 		success = gDeferredLightProgram.createShader(NULL, NULL);
 	}
 
@@ -1368,6 +1376,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredMultiLightProgram.mShaderFiles.push_back(make_pair("deferred/multiPointLightV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredMultiLightProgram.mShaderFiles.push_back(make_pair("deferred/multiPointLightF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredMultiLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
+		SINGLE_FP_PERMUTATION(gDeferredMultiLightProgram);
+
 		success = gDeferredMultiLightProgram.createShader(NULL, NULL);
 	}
 
@@ -1378,6 +1389,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSpotLightProgram.mShaderFiles.push_back(make_pair("deferred/pointLightV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredSpotLightProgram.mShaderFiles.push_back(make_pair("deferred/spotLightF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredSpotLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
+		SINGLE_FP_PERMUTATION(gDeferredSpotLightProgram);
+
 		success = gDeferredSpotLightProgram.createShader(NULL, NULL);
 	}
 
@@ -1388,6 +1402,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredMultiSpotLightProgram.mShaderFiles.push_back(make_pair("deferred/multiPointLightV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredMultiSpotLightProgram.mShaderFiles.push_back(make_pair("deferred/multiSpotLightF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredMultiSpotLightProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
+		SINGLE_FP_PERMUTATION(gDeferredMultiSpotLightProgram);
+
 		success = gDeferredMultiSpotLightProgram.createShader(NULL, NULL);
 	}
 
@@ -1414,6 +1431,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSunProgram.mShaderFiles.push_back(make_pair(vertex, GL_VERTEX_SHADER_ARB));
 		gDeferredSunProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER_ARB));
 		gDeferredSunProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
+		SINGLE_FP_PERMUTATION(gDeferredSunProgram);
+
 		success = gDeferredSunProgram.createShader(NULL, NULL);
 	}
 
@@ -1424,6 +1444,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		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.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
+		SINGLE_FP_PERMUTATION(gDeferredBlurLightProgram);
+
 		success = gDeferredBlurLightProgram.createShader(NULL, NULL);
 	}
 
@@ -1454,6 +1477,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaProgram.addPermutation("USE_VERTEX_COLOR", "1");
 		gDeferredAlphaProgram.addPermutation("HAS_SHADOW", mVertexShaderLevel[SHADER_DEFERRED] > 1 ? "1" : "0");
 		gDeferredAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+
+		SINGLE_FP_PERMUTATION(gDeferredAlphaProgram);
+
 		success = gDeferredAlphaProgram.createShader(NULL, NULL);
 
 		// Hack
@@ -1570,6 +1596,15 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 		gDeferredSoftenProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
+#if LL_DARWIN
+		// include spec exp clamp to fix older mac rendering artifacts
+		//
+		if (gGLManager.mIsMobileGF)
+		{
+			gDeferredSoftenProgram[i].addPermutation("NO_SRGB","1");
+		}
+#endif
+
 		if (gSavedSettings.getBOOL("RenderDeferredSSAO"))
 		{ //if using SSAO, take screen space light map into account as if shadows are enabled
 			gDeferredSoftenProgram.mShaderLevel = llmax(gDeferredSoftenProgram.mShaderLevel, 2);