Merged in graham_linden/viewer-eep-fixes (pull request #237)

SL-10303

2 files changed, 15 insertions, 10 deletions

diff --git a/indra/newview/app_settings/shaders/class1/windlight/sunDiscF.glsl b/indra/newview/app_settings/shaders/class1/windlight/sunDiscF.glsl
index 3f2375ee4d..668379164d 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/sunDiscF.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/sunDiscF.glsl
@@ -40,15 +40,18 @@ uniform sampler2D diffuseMap;
 uniform sampler2D altDiffuseMap;
 uniform float blend_factor; // interp factor between sun A/B
 VARYING vec2 vary_texcoord0;
+VARYING float sun_fade;
 
 void main() 
 {
-	vec4 sunA = texture2D(diffuseMap, vary_texcoord0.xy);
-	vec4 sunB = texture2D(altDiffuseMap, vary_texcoord0.xy);
+    vec4 sunA = texture2D(diffuseMap, vary_texcoord0.xy);
+    vec4 sunB = texture2D(altDiffuseMap, vary_texcoord0.xy);
     vec4 c     = mix(sunA, sunB, blend_factor);
+    c.a *= sun_fade;
+
     c.rgb = pow(c.rgb, vec3(0.7f));
-	c.rgb = fullbrightAtmosTransport(c.rgb);
+    c.rgb = fullbrightAtmosTransport(c.rgb);
     c.rgb = fullbrightScaleSoftClip(c.rgb);
-	frag_color = c;
+    frag_color = c;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/windlight/sunDiscV.glsl b/indra/newview/app_settings/shaders/class1/windlight/sunDiscV.glsl
index dd33a4be60..1fa32c3f3b 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/sunDiscV.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/sunDiscV.glsl
@@ -31,18 +31,20 @@ ATTRIBUTE vec3 position;
 ATTRIBUTE vec2 texcoord0;
 
 VARYING vec2 vary_texcoord0;
+VARYING float sun_fade;
 
 void calcAtmospherics(vec3 eye_pos);
 
 void main()
 {
-	//transform vertex
-	vec4 vert = vec4(position.xyz - vec3(0, 0, 50), 1.0);
-	vec4 pos = modelview_projection_matrix*vert;
+    //transform vertex
+    vec4 vert = vec4(position.xyz, 1.0);
+    vec4 pos = modelview_projection_matrix*vert;
 
-	gl_Position = pos;
-	
+    sun_fade = smoothstep(0.3, 1.0, (position.z + 50) / 512.0f);
+    gl_Position = pos;
+    
     calcAtmospherics(pos.xyz);
 
-	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 }