WIP - Windlight sun lighting should happen in sRGB space, not linear space. This keeps ambient from getting overblown and better matches environment lighting with ALM on/off.

3 files changed, 7 insertions, 4 deletions

diff --git a/indra/newview/app_settings/shaders/class3/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/multiSpotLightF.glsl
index 52de7ceaad..9d62b9d180 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/multiSpotLightF.glsl
@@ -183,7 +183,7 @@ void main()
 
     vec3 col = vec3(0,0,0);
         
-    vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+    vec3 diff_tex = srgb_to_linear(texture2DRect(diffuseRect, frag.xy).rgb);
     
     vec4 spec = texture2DRect(specularRect, frag.xy);
 
@@ -285,6 +285,7 @@ void main()
 
     col = scaleDownLight(col);
 
+    //output linear space color as gamma correction happens down stream
     frag_color.rgb = col;   
     frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 978c25b86a..7ed9e7b4fc 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -94,7 +94,8 @@ void main()
 
     float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
 
-    vec4 diffuse = texture2DRect(diffuseRect, tc); // linear
+    vec4 diffuse = texture2DRect(diffuseRect, tc); // sRGB
+    diffuse.rgb = srgb_to_linear(diffuse.rgb);
 
     vec3 col;
     float bloom = 0.0;
@@ -169,7 +170,8 @@ void main()
             bloom = fogged.a;
         #endif
     }
-    
+
+    //output linear since gamma correction happens down stream
     frag_color.rgb = col;
     frag_color.a = bloom;
 }
diff --git a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
index bccd819a43..56b0f4e5ce 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
@@ -182,7 +182,7 @@ void main()
         
     vec3 col = vec3(0,0,0);
         
-    vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+    vec3 diff_tex = srgb_to_linear(texture2DRect(diffuseRect, frag.xy).rgb);
         
     vec4 spec = texture2DRect(specularRect, frag.xy);