re-add non-local gates

[carveJwlIkooP6JGAAIwe30JlM.git] / shaders / scene_vertex_blend.h

diff --git a/shaders/scene_vertex_blend.h b/shaders/scene_vertex_blend.h
index 672d154f5d1b2233a7ad2006f56f03876101f378..2cc345b6c95768a7ff6d9b82f9d3764d84f5bba3 100644 (file)
--- a/shaders/scene_vertex_blend.h
+++ b/shaders/scene_vertex_blend.h
@@ -204,14 +204,18 @@ static struct vg_shader _shader_scene_vertex_blend = {
 "   vec3 sun_colour  = mix( vec3(1.0), g_sunset_colour.rgb, g_sunset_phase*0.5 );\n"
 "        sun_colour *= sun_shape;\n"
 "\n"
-"\n"
+"   \n"
 "   float star = 0.0;\n"
-"   for( float j = 1.0; j <= 4.1; j += 1.0 ){\n"
-"      float m = mix(0.6, 0.9, smoothstep(1.0, 2.0, j));\n"
-"      star += stars( ray_dir, 1.94 * pow( 1.64, j ), m ) * (1.0 / pow(4.0, j));\n"
+"   float star_blend = 10.0*max(0.0,(1.0-g_day_phase*2.0));\n"
+"\n"
+"   if( star_blend > 0.001 ){\n"
+"      for( float j = 1.0; j <= 4.1; j += 1.0 ){\n"
+"         float m = mix(0.6, 0.9, smoothstep(1.0, 2.0, j));\n"
+"         star += stars( ray_dir, 1.94 * pow( 1.64, j ), m ) * (1.0/pow(4.0, j));\n"
+"      }\n"
 "   }\n"
 "   \n"
-"   vec3 composite   = sky_colour + sun_colour + star*10.0*max(0.0,(1.0-g_day_phase*2.0));\n"
+"   vec3 composite   = sky_colour + sun_colour + star*star_blend;\n"
 "   return composite;\n"
 "}\n"
 "\n"