24 lines
771 B
Plaintext
24 lines
771 B
Plaintext
shader_type canvas_item;
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uniform float value_threshold : hint_range(0, 1, 0.1) = 0.5;
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uniform vec4 color_max : source_color = vec4(1);
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uniform vec4 color_min : source_color = vec4(0);
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uniform float speed = 16;
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uniform float stretch_factor = 256;
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uniform float end_alpha_x = 0;
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uniform float end_alpha_y = 0;
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void fragment() {
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vec4 tex = texture(TEXTURE, vec2((UV.x + TIME * speed) / stretch_factor, UV.y));
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//vec4 tex = texture(TEXTURE, UV + vec2(4, 0) * TIME * speed);
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vec4 color = tex;
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if (tex.r < value_threshold) {
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color = vec4(0);
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} else {
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color = mix(color_min, color_max, tex.r);
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color.a = mix(end_alpha_x, color.a, UV.x);
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color.a = mix(color.a, end_alpha_y, abs(0.5 - UV.y) * 2.0);
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}
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COLOR = color;
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}
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