36 lines
1.1 KiB
Text
36 lines
1.1 KiB
Text
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shader_type canvas_item;
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render_mode blend_mix,unshaded;
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uniform vec4 effect_color : hint_color = vec4(1.0, 1.0, 1.0, 1.0);
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uniform float effect_strength : hint_range(0, 1) = 0.5;
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uniform float effect_offset : hint_range(-0.7, 0.7) = 0;
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uniform float rotation : hint_range(-90, 90) = 0;
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uniform float width : hint_range(0, 0.5) = 0.2;
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uniform float softness : hint_range(0, 1) = 0.5;
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void fragment() {
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float a, b, c, powsum;
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float rad = radians(rotation);
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if (rotation < 45f && rotation > -45f) {
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a = 1.0;
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b = tan(rad);
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c = -0.5f - 0.5f * b - effect_offset / cos(rad);
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} else {
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b =1.0;
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a = 1.0 / tan(rad);
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c = -0.5 - 0.5f * a - effect_offset / sin(rad);
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}
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float d = abs(a * UV.x + b * UV.y + c) / sqrt(a * a + b * b);
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float edge = (1.0 - softness) * width;
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if ( d < edge) {
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vec4 color = texture(TEXTURE, UV);
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COLOR = effect_color * effect_strength + color;
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COLOR.a = color.a;
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} else if (d > width) {
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COLOR = texture(TEXTURE, UV);
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} else {
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vec4 color = texture(TEXTURE, UV);
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COLOR = (width - d) / (width - edge) * effect_color * effect_strength + color;
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COLOR.a = color.a;
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}
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}
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