Merge and fix MAINT-9087 and MAINT-9084

1 files changed, 17 insertions, 4 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl b/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
index d7f655709c..6c616db442 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/starsF.glsl
@@ -26,19 +26,26 @@
 /*[EXTRA_CODE_HERE]*/
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
+out vec4 frag_data[3];
 #else
-#define frag_color gl_FragColor
+#define frag_data gl_FragData
 #endif
 
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
+VARYING vec2 screenpos;
 
 uniform sampler2D diffuseMap;
 uniform sampler2D altDiffuseMap;
 uniform float blend_factor;
 uniform float custom_alpha;
 uniform vec4 sunlight_color;
+uniform float time;
+
+float twinkle(){
+    float d = fract(screenpos.x + screenpos.y);
+    return abs(d);
+}
 
 void main() 
 {
@@ -46,6 +53,12 @@ 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 *= custom_alpha;
-	frag_color = col;
+    col.a = (col.a * custom_alpha) * 8.0f;
+    col.a += twinkle() * 2.0f;
+    col.a = max(0.0f, col.a);
+
+	frag_data[0] = col;
+    frag_data[1] = vec4(0.0f);
+    frag_data[2] = vec4(0.0, 1.0, 0.0, 1.0);
 }
+