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add rain to materials

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Overside srl
2026-03-31 19:33:17 +02:00
parent 222c3c88d3
commit b05abd395f
16 changed files with 218 additions and 106 deletions
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28
docs/museums/daynight/scenes/grain_test/tree_leaves.gdshader
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@@ -5,6 +5,11 @@ global uniform float global_wind_speed;
global uniform vec2 global_wind_direction;
global uniform float global_wind_scale;
global uniform float global_wind_strength;
global uniform float global_snow_start_time;
global uniform float global_snow_accumulation_speed;
global uniform float global_snow_melt_time;
global uniform float global_snow_melt_speed;
global uniform vec4 global_snow_color;
uniform sampler2D wind_noise : filter_linear_mipmap;
uniform bool billboard_enabled = true;
@@ -24,6 +29,7 @@ uniform float random_mix : hint_range(0.0, 1.0) = 0.3;
uniform float cast_shadow_strength : hint_range(0.0, 1.0) = 0.6;
varying vec3 v_final_color;
varying float v_shade_factor;
float hash(vec3 p) {
p = fract(p * 0.1031);
@@ -48,6 +54,8 @@ void vertex() {
float combined_factor = mix(h_factor, leaf_rand, random_mix);
combined_factor = ceil(combined_factor * light_steps) / light_steps;
v_shade_factor = combined_factor;
vec3 dark_color = base_color.rgb * (1.0 - shadow_intensity);
vec3 light_color = base_color.rgb + (vec3(1.0) - base_color.rgb) * highlight_intensity;
v_final_color = mix(dark_color, light_color, combined_factor);
@@ -76,7 +84,25 @@ void fragment() {
vec2 shifted_uv = UV + texture_offset;
vec4 tex = texture(alpha_texture, shifted_uv);
ALBEDO = v_final_color;
// Snow accumulation
float snow_amount = 0.0;
if (global_snow_start_time >= 0.0) {
snow_amount = clamp((TIME - global_snow_start_time) * global_snow_accumulation_speed, 0.0, 1.0);
}
if (global_snow_melt_time >= 0.0) {
float melt = clamp((TIME - global_snow_melt_time) * global_snow_melt_speed, 0.0, 1.0);
snow_amount *= (1.0 - melt);
}
float top_mask = 1.0 - shifted_uv.y;
float snow_mask = smoothstep(1.0 - snow_amount, 1.2 - snow_amount, top_mask);
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);
vec3 final_albedo = mix(v_final_color, shaded_snow, snow_mask);
ALBEDO = final_albedo;
ALPHA = tex.r * opacity;
ALPHA_SCISSOR_THRESHOLD = 0.5;
ROUGHNESS = 0.02;