55 lines
1.3 KiB
Plaintext
55 lines
1.3 KiB
Plaintext
/*
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木目シェーダー by あるる（きのもと 結衣）
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Grain Shader by Yui Kinomoto @arlez80
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MIT License
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*/
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shader_type spatial;
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// render_mode;
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uniform vec4 light_color : source_color = vec4( 0.9529411764705882, 0.8588235294117647, 0.7490196078431373, 1.0 );
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uniform vec4 dark_color : source_color = vec4( 0.7490196078431373, 0.6196078431372549, 0.49019607843137253, 1.0 );
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uniform float ring_scale = 4.4;
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uniform float wave_scale = 8.454;
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uniform float random_scale = 4.6;
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uniform float noise_scale = 0.03;
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vec2 random( vec2 pos )
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{
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return fract(
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sin(
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vec2(
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dot(pos, vec2(12.9898,78.233))
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, dot(pos, vec2(-148.998,-65.233))
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)
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) * 43758.5453
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);
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}
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float value_noise( vec2 pos )
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{
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vec2 p = floor( pos );
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vec2 f = fract( pos );
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float v00 = random( p + vec2( 0.0, 0.0 ) ).x;
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float v10 = random( p + vec2( 1.0, 0.0 ) ).x;
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float v01 = random( p + vec2( 0.0, 1.0 ) ).x;
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float v11 = random( p + vec2( 1.0, 1.0 ) ).x;
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vec2 u = f * f * ( 3.0 - 2.0 * f );
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return mix( mix( v00, v10, u.x ), mix( v01, v11, u.x ), u.y );
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}
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void fragment( )
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{
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vec2 shift_uv = UV;
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shift_uv.x += value_noise( UV * random_scale );
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float x = shift_uv.x + sin( shift_uv.y * wave_scale );
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float f = mod( x * ring_scale + random( UV ).x * noise_scale, 1.0 );
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ALBEDO = mix( light_color, dark_color, f ).rgb;
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ALPHA = mix( light_color, dark_color, f ).a;
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}
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