First pass of gamma correction reimplementation.

17 files changed, 66 insertions, 45 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index 00717cd6a9..a25d0f2773 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -129,7 +129,7 @@ void main()
 #else
 	vec4 diff = texture2D(diffuseMap,vary_texcoord0.xy);
 #endif
-
+	diff.rgb = pow(diff.rgb, vec3(2.2));
 #if INDEX_MODE == NON_INDEXED_NO_COLOR
 	float vertex_color_alpha = 1.0;
 #else
@@ -173,7 +173,6 @@ void main()
 #endif
 
 	color.rgb += diff.rgb * vary_pointlight_col * light_col;
-
 	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
index e6b63657e6..13676ceead 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
@@ -181,21 +181,21 @@ void main()
 	vary_rotation[2] = vec3(t.z, b.z, n.z);
 
 	calcAtmospherics(pos.xyz);
-
+	vec3 dff = pow(diffuse_color.rgb, vec3(2.2));
 	//vec4 color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.));
 	vec4 col = vec4(0.0, 0.0, 0.0, diffuse_color.a);
 	
-	vary_pointlight_col = diffuse_color.rgb;
+	vary_pointlight_col = dff;
 	
 	col.rgb = vec3(0,0,0);
 
 	// Add windlight lights
 	col.rgb = atmosAmbient(vec3(0.));
 	
-	vary_ambient = col.rgb*diffuse_color.rgb;
 	vary_directional.rgb = atmosAffectDirectionalLight(1);
+	vary_ambient = col.rgb*dff;
 	
-	col.rgb = col.rgb*diffuse_color.rgb;
+	col.rgb = col.rgb*dff;
 #if INDEX_MODE != NON_INDEXED_NO_COLOR
 	vertex_color = col;
 #endif
diff --git a/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl b/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
index 6aa4d7b4ed..ed02c4a481 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/emissiveF.glsl
@@ -42,7 +42,7 @@ void main()
 	float shadow = 1.0;
 
 	vec4 color = diffuseLookup(vary_texcoord0.xy)*vertex_color;
-	
+	color.rgb = pow(color.rgb, vec3(2.2));
 	color.rgb = fullbrightAtmosTransport(color.rgb);
 
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index 36433a5827..b91aaf80fb 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -43,7 +43,7 @@ void main()
 	float shadow = 1.0;
 
 	vec4 color = diffuseLookup(vary_texcoord0.xy)*vertex_color;
-	
+	color.rgb = pow(color.rgb, vec3(2.2));
 	color.rgb = fullbrightAtmosTransport(color.rgb);
 
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
index 5329ae9dd7..d29c9a2b77 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
@@ -93,7 +93,8 @@ void main()
 	norm = decode_normal(norm.xy); // unpack norm
 	norm = normalize(norm);
 	vec4 spec = texture2DRect(specularRect, frag.xy);
-	vec3 diff = texture2DRect(diffuseRect, frag.xy).rgb;
+	spec.rgb = pow(spec.rgb, vec3(2.2));
+	vec3 diff = pow(texture2DRect(diffuseRect, frag.xy).rgb, vec3(2.2));
 	float noise = texture2D(noiseMap, frag.xy/128.0).b;
 	vec3 out_col = vec3(0,0,0);
 	vec3 npos = normalize(-pos);
@@ -128,8 +129,6 @@ void main()
 			dist_atten *= noise;
 
 			float lit = da * dist_atten;
-
-			lit = pow(lit,0.7);
 						
 			vec3 col = light_col[i].rgb*lit*diff;
 			
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index 9746218ea6..5129ecf128 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -181,6 +181,7 @@ void main()
 	vec3 col = vec3(0,0,0);
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+	diff_tex = pow(diff_tex, vec3(2.2));
 		
 	float noise = texture2D(noiseMap, frag.xy/128.0).b;
 	if (proj_tc.z > 0.0 &&
@@ -202,8 +203,6 @@ void main()
 			vec3 lcol = color.rgb * plcol.rgb * plcol.a;
 			
 			lit = da * dist_atten * noise;
-
-			lit = pow(lit, 0.7);
 			
 			col = lcol*lit*diff_tex;
 			amb_da += (da*0.5)*proj_ambiance;
@@ -223,6 +222,8 @@ void main()
 	
 	
 	vec4 spec = texture2DRect(specularRect, frag.xy);
+	spec.rgb = pow(spec.rgb, vec3(2.2));
+	
 	if (spec.a > 0.0)
 	{
 		vec3 ref = reflect(normalize(pos), norm);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
index 27863b0095..fa514e5585 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
@@ -108,16 +108,15 @@ void main()
 	
 	float noise = texture2D(noiseMap, frag.xy/128.0).b;
 	
-	vec3 col = texture2DRect(diffuseRect, frag.xy).rgb;
+	vec3 col = pow(texture2DRect(diffuseRect, frag.xy).rgb, vec3(2.2));
 	float fa = falloff+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;
-	
-	lit = pow(lit, 0.7);
 
 	col = color.rgb*lit*col;
 
 	vec4 spec = texture2DRect(specularRect, frag.xy);
+	spec.rgb = pow(spec.rgb, vec3(2.2));
 	if (spec.a > 0.0)
 	{
 		vec3 npos = -normalize(pos);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl
index eb5beeef39..cceb1b11ab 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/postDeferredNoDoFF.glsl
@@ -42,6 +42,6 @@ void main()
 	vec4 diff = texture2DRect(diffuseRect, vary_fragcoord.xy);
 	
 	vec4 bloom = texture2D(bloomMap, vary_fragcoord.xy/screen_res);
-	frag_color = diff + bloom;
+	frag_color = pow(diff + bloom, vec4(0.454545, 0.454545, 0.454545, 1.0));
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index 63c819f941..8600f69b8a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -60,6 +60,7 @@ 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;
@@ -230,9 +231,9 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 		  + tmpAmbient)));
 
 	//brightness of surface both sunlight and ambient
-	setSunlitColor(vec3(sunlight * .5));
-	setAmblitColor(vec3(tmpAmbient * .25));
-	setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1));
+	setSunlitColor(pow(vec3(sunlight * .5), vec3(global_gamma)) * 3.3);
+	setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(global_gamma)) * 3.3);
+	setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(global_gamma)) * 3.3);
 }
 
 vec3 atmosLighting(vec3 light)
@@ -291,12 +292,11 @@ void main()
 	norm.xyz = decode_normal(norm.xy); // unpack norm
 		
 	float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
-	
-	da = pow(da, 0.7);
 
 	vec4 diffuse = texture2DRect(diffuseRect, tc);
+	diffuse.rgb = pow(diffuse.rgb, vec3(2.2));
 	vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);
-	
+	spec.rgb = pow(spec.rgb, vec3(2.2));
 	vec3 col;
 	float bloom = 0.0;
 	if (diffuse.a < 0.9)
@@ -323,7 +323,7 @@ void main()
 
 			//add environmentmap
 			vec3 env_vec = env_mat * refnormpersp;
-			col = mix(col.rgb, textureCube(environmentMap, env_vec).rgb, 
+			col = mix(col.rgb, pow(textureCube(environmentMap, env_vec).rgb, vec3(2.2)) * 2.2, 
 				max(envIntensity-diffuse.a*2.0, 0.0)); 
 		}
 	
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl
index c6031fc45a..b59fcbe017 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightV.glsl
@@ -35,6 +35,6 @@ void main()
 	//transform vertex
 	vec4 pos = modelview_projection_matrix * vec4(position.xyz, 1.0);
 	gl_Position = pos; 
-		
+	
 	vary_fragcoord = (pos.xy*0.5+0.5)*screen_res;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
index d7f0ab6d8e..4b4063f51c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -84,6 +84,7 @@ vec3 decode_normal (vec2 enc)
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = pow(ret.rgb, vec3(2.2));
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -99,7 +100,8 @@ vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
-	
+	ret.rgb = pow(ret.rgb, vec3(2.2));
+
 	vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
 	
 	float det = min(lod/(proj_lod*0.5), 1.0);
@@ -116,7 +118,8 @@ vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
-	
+	ret.rgb = pow(ret.rgb, vec3(2.2));
+
 	vec2 dist = tc-vec2(0.5);
 	
 	float d = dot(dist,dist);
@@ -184,6 +187,7 @@ void main()
 	vec3 col = vec3(0,0,0);
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+	diff_tex = pow(diff_tex, vec3(2.2));
 		
 	float noise = texture2D(noiseMap, frag.xy/128.0).b;
 	if (proj_tc.z > 0.0 &&
@@ -205,8 +209,6 @@ void main()
 			vec3 lcol = color.rgb * plcol.rgb * plcol.a;
 			
 			lit = da * dist_atten * noise;
-			
-			lit = pow(lit, 0.7);
 
 			col = lcol*lit*diff_tex;
 			amb_da += (da*0.5)*proj_ambiance;
@@ -226,6 +228,8 @@ void main()
 	
 	
 	vec4 spec = texture2DRect(specularRect, frag.xy);
+	spec.rgb = pow(spec.rgb, vec3(2.2));
+
 	if (spec.a > 0.0)
 	{
 		vec3 ref = reflect(normalize(pos), norm);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
index 486e806434..df6eb04a62 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
@@ -215,7 +215,7 @@ void main()
 #else
 	vec4 diff = texture2D(diffuseMap,vary_texcoord0.xy);
 #endif
-	
+	diff.rgb = pow(diff.rgb, vec3(2.2));
 #if INDEX_MODE == NON_INDEXED_NO_COLOR
 	float vertex_color_alpha = 1.0;
 #else
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
index 5f2961c90e..db5e5620dc 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
@@ -186,17 +186,19 @@ void main()
 	//vec4 color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.));
 	vec4 col = vec4(0.0, 0.0, 0.0, diffuse_color.a);
 
-	vary_pointlight_col = diffuse_color.rgb;
+	vec3 dff = pow(diffuse_color.rgb, vec3(2.2));
+
+	vary_pointlight_col = dff;
 
 	col.rgb = vec3(0,0,0);
 
 	// Add windlight lights
 	col.rgb = atmosAmbient(vec3(0.));
 	
-	vary_ambient = col.rgb*diffuse_color.rgb;
 	vary_directional.rgb = atmosAffectDirectionalLight(1);
+	vary_ambient = col.rgb*dff;
 	
-	col.rgb = col.rgb*diffuse_color.rgb;
+	col.rgb = col.rgb*dff;
 	
 #if INDEX_MODE != NON_INDEXED_NO_COLOR
 	vertex_color = col;
diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index b3ab8fd510..cfdb53b5cc 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -82,6 +82,7 @@ vec3 decode_normal (vec2 enc)
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = pow(ret.rgb, vec3(2.2));
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -97,6 +98,7 @@ vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = pow(ret.rgb, vec3(2.2));
 	
 	vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
 	
@@ -114,6 +116,7 @@ vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = pow(ret.rgb, vec3(2.2));
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -193,6 +196,7 @@ void main()
 	vec3 col = vec3(0,0,0);
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+	diff_tex = pow(diff_tex, vec3(2.2));
 		
 	float noise = texture2D(noiseMap, frag.xy/128.0).b;
 	if (proj_tc.z > 0.0 &&
@@ -214,8 +218,6 @@ void main()
 			vec3 lcol = color.rgb * plcol.rgb * plcol.a;
 			
 			lit = da * dist_atten * noise;
-			
-			lit = pow(lit, 0.7);
 
 			col = lcol*lit*diff_tex*shadow;
 			amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance;
@@ -235,6 +237,8 @@ void main()
 	
 	
 	vec4 spec = texture2DRect(specularRect, frag.xy);
+	spec.rgb = pow(spec.rgb, vec3(2.2));
+	
 	if (spec.a > 0.0)
 	{
 		vec3 ref = reflect(normalize(pos), norm);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index 8e638c64eb..e8f3a02c5a 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -60,6 +60,7 @@ 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 vec4 shadow_clip;
@@ -233,9 +234,9 @@ void calcAtmospherics(vec3 inPositionEye, float ambFactor) {
 		  + tmpAmbient)));
 
 	//brightness of surface both sunlight and ambient
-	setSunlitColor(vec3(sunlight * .5));
-	setAmblitColor(vec3(tmpAmbient * .25));
-	setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1));
+	setSunlitColor(pow(vec3(sunlight * .5), vec3(global_gamma)) * 3.3);
+	setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(global_gamma)) * 3.3);
+	setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(global_gamma)) * 3.3);
 }
 
 vec3 atmosLighting(vec3 light)
@@ -293,9 +294,9 @@ void main()
 	float envIntensity = norm.z;
 	norm.xyz = decode_normal(norm.xy);
 	float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
-	da = pow(da, 0.7);
 
 	vec4 diffuse = texture2DRect(diffuseRect, tc);
+	diffuse.rgb = pow(diffuse.rgb, vec3(2.2));
 
 	vec3 col;
 	float bloom = 0.0;
@@ -303,6 +304,7 @@ void main()
 	if (diffuse.a < 0.9)
 	{
 		vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);
+		spec.rgb = pow(spec.rgb, vec3(2.2));
 		
 		vec2 scol_ambocc = texture2DRect(lightMap, vary_fragcoord.xy).rg;
 		float scol = max(scol_ambocc.r, diffuse.a); 
@@ -330,7 +332,7 @@ void main()
 
 			//add environmentmap
 			vec3 env_vec = env_mat * refnormpersp;
-			col = mix(col.rgb, textureCube(environmentMap, env_vec).rgb, 
+			col = mix(col.rgb, pow(textureCube(environmentMap, env_vec).rgb, vec3(2.2)) * 2.2, 
 				max(envIntensity-diffuse.a*2.0, 0.0)); 
 		}
 			
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
index 43fc5dbc5e..7ce327d1e0 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -83,6 +83,7 @@ vec3 decode_normal (vec2 enc)
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = pow(ret.rgb, vec3(2.2));
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -98,6 +99,7 @@ vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = pow(ret.rgb, vec3(2.2));
 	
 	vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
 	
@@ -115,6 +117,7 @@ vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = pow(ret.rgb, vec3(2.2));
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -194,6 +197,8 @@ void main()
 	vec3 col = vec3(0,0,0);
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+	
+	diff_tex = pow(diff_tex, vec3(2.2));
 		
 	float noise = texture2D(noiseMap, frag.xy/128.0).b;
 	if (proj_tc.z > 0.0 &&
@@ -215,8 +220,6 @@ void main()
 			vec3 lcol = color.rgb * plcol.rgb * plcol.a;
 			
 			lit = da * dist_atten * noise;
-			
-			lit = pow(lit, 0.7);
 
 			col = lcol*lit*diff_tex*shadow;
 			amb_da += (da*0.5)*(1.0-shadow)*proj_ambiance;
@@ -236,6 +239,7 @@ void main()
 	
 	
 	vec4 spec = texture2DRect(specularRect, frag.xy);
+	spec.rgb = pow(spec.rgb, vec3(2.2));
 	if (spec.a > 0.0)
 	{
 		vec3 ref = reflect(normalize(pos), norm);
diff --git a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
index da3d922017..d543479b85 100644
--- a/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
+++ b/indra/newview/app_settings/shaders/class2/windlight/atmosphericsV.glsl
@@ -54,6 +54,7 @@ uniform float density_multiplier;
 uniform float distance_multiplier;
 uniform float max_y;
 uniform vec4 glow;
+uniform float global_gamma;
 
 void calcAtmospherics(vec3 inPositionEye) {
 
@@ -129,11 +130,17 @@ void calcAtmospherics(vec3 inPositionEye) {
 		vec3(blue_horizon * blue_weight * (sunlight*(1.-cloud_shadow) + tmpAmbient)
 	  + (haze_horizon * haze_weight) * (sunlight*(1.-cloud_shadow) * temp2.x
 		  + tmpAmbient)));
+	
+	float gammaScale = 1.0;
+	if (global_gamma > 1.0)
+	{
+		gammaScale = global_gamma / 2 + global_gamma;
+	}
 
 	//brightness of surface both sunlight and ambient
-	setSunlitColor(vec3(sunlight * .5));
-	setAmblitColor(vec3(tmpAmbient * .25));
-	setAdditiveColor(getAdditiveColor() * vec3(1.0 - temp1));
+	setSunlitColor(pow(vec3(sunlight * .5), vec3(global_gamma)) * gammaScale);
+	setAmblitColor(pow(vec3(tmpAmbient * .25), vec3(global_gamma)) * gammaScale);
+	setAdditiveColor(pow(getAdditiveColor() * vec3(1.0 - temp1), vec3(global_gamma)) * gammaScale);
 
 	// vary_SunlitColor = vec3(0);
 	// vary_AmblitColor = vec3(0);