21 lines
748 B
GLSL
21 lines
748 B
GLSL
shader_type canvas_item;
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uniform float width: hint_range(0.0, 50.0);
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uniform vec4 color: hint_color;
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void fragment() {
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vec2 size = TEXTURE_PIXEL_SIZE * width;
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float outline = texture(TEXTURE, UV + vec2(-size.x, 0)).a;
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outline += texture(TEXTURE, UV + vec2(0, size.y)).a;
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outline += texture(TEXTURE, UV + vec2(size.x, 0)).a;
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outline += texture(TEXTURE, UV + vec2(0, -size.y)).a;
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outline += texture(TEXTURE, UV + vec2(-size.x, size.y)).a;
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outline += texture(TEXTURE, UV + vec2(size.x, size.y)).a;
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outline += texture(TEXTURE, UV + vec2(-size.x, -size.y)).a;
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outline += texture(TEXTURE, UV + vec2(size.x, -size.y)).a;
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outline = min(outline, 1.0);
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vec4 ncolor = texture(TEXTURE, UV);
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COLOR = mix(ncolor, color, outline - ncolor.a);
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} |