fix snow for grass

core/daynight/grass_leaves.gdshader

@@ -13,6 +13,7 @@ global uniform float global_snow_accumulation_speed = 0.005;
 global uniform float global_snow_melt_time = -1.0;
 global uniform float global_snow_melt_speed = 0.1;
 global uniform float global_snow_amount = 0.0;
+global uniform vec4 global_snow_color = vec4(0.92, 0.96, 1.0, 1.0);
 global uniform float global_rain_intensity;
 
 // --- PARAMETRI ESTETICI ---
@@ -133,7 +134,7 @@ void fragment() {
 	// Applichiamo la variazione al colore finale dell'erba
 	vec3 varied_grass_color = mix(v_final_color, variance_color.rgb, noise_sample * variance_intensity);
 
-	float snow_amount = smoothstep(0.0, 1.0, get_snow_progress());
+	float snow_amount = pow(get_snow_progress(), 0.55);
 	
 	float top_mask = 1.0 - shifted_uv.y; 
 	float snow_start = 1.0 - clamp(snow_coverage, 0.05, 1.0);
@@ -141,8 +142,9 @@ void fragment() {
 	snow_mask *= step(0.01, snow_amount);
 	snow_mask = clamp(snow_mask, 0.0, 1.0);
 	
-	vec3 dark_snow = snow_color.rgb * (1.0 - shadow_intensity);
-	vec3 shaded_snow = mix(dark_snow, snow_color.rgb, v_shade_factor);
+	vec3 snow_base_color = max(snow_color.rgb, global_snow_color.rgb);
+	float snow_light = mix(0.82, 1.0, max(v_shade_factor, 0.35));
+	vec3 shaded_snow = clamp(snow_base_color * snow_light, 0.0, 1.0);
 	
 	// Mescoliamo il colore variato con la neve
 	vec3 final_albedo = mix(varied_grass_color, shaded_snow, snow_mask);

core/daynight/tree_leaves.gdshader

@@ -111,8 +111,8 @@ void fragment() {
     float snow_mask = smoothstep(1.0 - snow_amount * 1.35, 1.08 - snow_amount * 1.35, top_mask) * snow_visibility;
     snow_mask *= step(0.01, snow_amount);
 
-    vec3 dark_snow = global_snow_color.rgb * (1.0 - shadow_intensity);
-    vec3 shaded_snow = mix(dark_snow, global_snow_color.rgb, v_shade_factor);
+    float snow_light = mix(0.82, 1.0, max(v_shade_factor, 0.35));
+    vec3 shaded_snow = clamp(global_snow_color.rgb * snow_light, 0.0, 1.0);
     vec3 final_albedo = mix(v_final_color, shaded_snow, snow_mask);
 	
     // Rain wetness: darken and make shinier