75 lines
2.4 KiB
Text
75 lines
2.4 KiB
Text
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[gd_resource type="ShaderMaterial" load_steps=6 format=2]
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[sub_resource type="Shader" id=1]
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code = "shader_type canvas_item;
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uniform sampler2D noise_sparse;
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uniform sampler2D noise_fine;
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uniform float scroll_speed = 0.0;
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uniform float warp_boost: hint_range(1, 10) = 1.0;
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uniform float warp_opacity : hint_range(0, 1) = 0.0;
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const float noise_sparse_scale = 0.0007;
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const float noise_fine_scale = 0.003;
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const float warp_clouds_scale = 0.0003;
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const vec2 scroll_dir = vec2(1,0);
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const vec2 blink_scroll = vec2(50.0, 0);
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const float PI = 3.1415;
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render_mode unshaded;
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void fragment() {
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float scroll = scroll_speed * TIME;
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float sparse = texture(noise_sparse, (FRAGCOORD.xy + scroll_dir * scroll)*noise_sparse_scale).r;
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sparse = ((sparse * sparse) - 0.2) * 1.2;
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float fine = texture(noise_fine, (FRAGCOORD.xy + scroll_dir * scroll)*noise_fine_scale).r;
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fine = fine - 0.6;
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if (fine > 0.) {
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fine = fine * 10.0;
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}
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if (fine > 0.3) {
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float fine_blink_fade = texture(noise_sparse, (FRAGCOORD.xy + blink_scroll*TIME)*noise_sparse_scale).r;
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fine = fine - ((fine_blink_fade * fine_blink_fade) - 0.2) * 1.2;
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}
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vec4 clouds = vec4(vec3(0.3, 0.5, 0.7) * sparse, 1.0);
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vec4 stars = vec4(fine);
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vec2 warp_scroll = scroll_dir * scroll;
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vec2 warp_uv = (FRAGCOORD.xy * sin(SCREEN_UV.y * PI) + warp_scroll)*warp_clouds_scale;
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vec2 warp_uv_inv = (FRAGCOORD.xy * sin((abs(SCREEN_UV.y-0.5)) * SCREEN_UV.x * PI) + warp_scroll*0.5)*warp_clouds_scale;
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float warp_clouds_sparse = texture(noise_sparse, vec2(0.5,1) * warp_uv).r;
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float warp_clouds_fine = texture(noise_sparse, vec2(2,1) * warp_uv_inv).r;
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vec4 warp = vec4(vec3(0), 1);
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warp += vec4(vec3(0.3,0.2,0.9)*warp_clouds_sparse, 0);
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warp += vec4(vec3(0.5,0.0,0.5)*(warp_clouds_fine*0.5+warp_clouds_sparse)*abs(SCREEN_UV.y-0.5), 0);
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COLOR = mix(clouds + stars, warp*warp_boost, warp_opacity);
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}"
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[sub_resource type="OpenSimplexNoise" id=2]
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period = 2.0
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persistence = 0.6
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lacunarity = 3.0
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[sub_resource type="NoiseTexture" id=3]
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seamless = true
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noise = SubResource( 2 )
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[sub_resource type="OpenSimplexNoise" id=4]
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[sub_resource type="NoiseTexture" id=5]
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width = 1024
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height = 1024
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seamless = true
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noise = SubResource( 4 )
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[resource]
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shader = SubResource( 1 )
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shader_param/scroll_speed = 0.0
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shader_param/warp_boost = 0.0
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shader_param/warp_opacity = 0.0
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shader_param/noise_sparse = SubResource( 5 )
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shader_param/noise_fine = SubResource( 3 )
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