1 files changed, 41 insertions, 7 deletions

diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index 62ca3f1ff1..c20e00163c 100755
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -69,6 +69,43 @@ uniform vec2 screen_res;
 
 uniform mat4 inv_proj;
 
+vec3 srgb_to_linear(vec3 cs)
+{
+	vec3 low_range = cs / vec3(12.92);
+	vec3 high_range = pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4));
+	bvec3 lte = lessThanEqual(cs,vec3(0.04045));
+
+#ifdef OLD_SELECT
+	vec3 result;
+	result.r = lte.r ? low_range.r : high_range.r;
+	result.g = lte.g ? low_range.g : high_range.g;
+	result.b = lte.b ? low_range.b : high_range.b;
+    return result;
+#else
+	return mix(high_range, low_range, lte);
+#endif
+
+}
+
+vec3 linear_to_srgb(vec3 cl)
+{
+	cl = clamp(cl, vec3(0), vec3(1));
+	vec3 low_range  = cl * 12.92;
+	vec3 high_range = 1.055 * pow(cl, vec3(0.41666)) - 0.055;
+	bvec3 lt = lessThan(cl,vec3(0.0031308));
+
+#ifdef OLD_SELECT
+	vec3 result;
+	result.r = lt.r ? low_range.r : high_range.r;
+	result.g = lt.g ? low_range.g : high_range.g;
+	result.b = lt.b ? low_range.b : high_range.b;
+    return result;
+#else
+	return mix(high_range, low_range, lt);
+#endif
+
+}
+
 vec2 encode_normal(vec3 n)
 {
 	float f = sqrt(8 * n.z + 8);
@@ -88,10 +125,9 @@ vec3 decode_normal (vec2 enc)
 
 vec4 correctWithGamma(vec4 col)
 {
-	return vec4(pow(col.rgb, vec3(2.2)), col.a);
+	return vec4(srgb_to_linear(col.rgb), col.a);
 }
 
-
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
@@ -298,14 +334,12 @@ void main()
 			vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds;
 			
 			vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0));
+			stc /= stc.w;
 
 			if (stc.z > 0.0)
 			{
-				stc.xy /= stc.w;
+				float fatten = clamp(envIntensity*envIntensity+envIntensity*0.25, 0.25, 1.0);
 
-				float fatten = clamp(envIntensity*envIntensity+envIntensity*0.5, 0.25, 1.0);
-				
-				//stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5);
 				stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5);
 								
 				if (stc.x < 1.0 &&
@@ -313,7 +347,7 @@ void main()
 					stc.x > 0.0 &&
 					stc.y > 0.0)
 				{
-					col += color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod-envIntensity*proj_lod).rgb*shadow*spec.rgb;										
+					col += color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod).rgb*shadow*spec.rgb;										
 				}
 			}
 		}