25 lines
688 B
Plaintext
25 lines
688 B
Plaintext
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shader_type canvas_item;
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//render_mode unshaded; // optional
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// Noise texture
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uniform sampler2D noise_texture: repeat_enable, filter_nearest;
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// Fog density
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uniform float density: hint_range(0.0, 1.0) = 0.25;
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// Fog speed
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uniform vec2 speed = vec2(0.02, 0.01);
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// Called for every pixel the material is visible on
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void fragment() {
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// Make the fog slowly move
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vec2 uv = UV + speed * TIME;
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// Sample the noise texture
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float noise = texture(noise_texture, uv).r;
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// Convert the noise from the (0.0, 1.0) range to the (-1.0, 1.0) range
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// and clamp it between 0.0 and 1.0 again
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float fog = clamp(noise * 2.0 - 1.0, 0.0, 1.0);
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// Apply the fog effect
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COLOR.a *= fog * density;
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}
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