Make legacy star brightness setting convert to 0-512 range of new settings.

Make brightness scale in shader more linear and fix twinkling.

1 files changed, 5 insertions, 3 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl b/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
index 6c616db442..4ae3f7b76f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
@@ -53,9 +53,11 @@ void main()
 	vec4 col_b = texture2D(diffuseMap, vary_texcoord0.xy);
     vec4 col = mix(col_b, col_a, blend_factor);
     col.rgb *= vertex_color.rgb;
-    col.a = (col.a * custom_alpha) * 8.0f;
-    col.a += twinkle() * 2.0f;
-    col.a = max(0.0f, col.a);
+ 
+    float factor = smoothstep(0.0f, 0.9f, custom_alpha);
+
+    col.a = (col.a * factor) * 32.0f;
+    col.a *= twinkle();
 
 	frag_data[0] = col;
     frag_data[1] = vec4(0.0f);