51 lines
1.4 KiB
Plaintext
51 lines
1.4 KiB
Plaintext
{
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"name": "make_tileable",
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"node_position": {
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"x": 0,
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"y": 0
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},
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"parameters": {
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"w": 0.1
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},
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"shader_model": {
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"code": "",
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"longdesc": "Creates a tileable version of its input image by moving different parts around to hide seams.",
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"global": "",
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"inputs": [
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{
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"default": "vec4(1.0)",
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"function": true,
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"label": "",
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"longdesc": "The image to be made tileable",
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"name": "in",
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"shortdesc": "Input",
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"type": "rgba"
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}
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],
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"instance": "vec4 make_tileable_$(name)(vec2 uv, float w) {\n\tvec4 a = $in(uv);\n\tvec4 b = $in(fract(uv+vec2(0.5)));\n\tfloat coef_ab = sin(1.57079632679*clamp((length(uv-vec2(0.5))-0.5+w)/w, 0.0, 1.0));\n\tvec4 c = $in(fract(uv+vec2(0.25)));\n\tfloat coef_abc = sin(1.57079632679*clamp((min(min(length(uv-vec2(0.0, 0.5)), length(uv-vec2(0.5, 0.0))), min(length(uv-vec2(1.0, 0.5)), length(uv-vec2(0.5, 1.0))))-w)/w, 0.0, 1.0));\n\treturn mix(c, mix(a, b, coef_ab), coef_abc);\n}\n",
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"name": "Make Tileable",
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"outputs": [
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{
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"longdesc": "A tileable version of the input image",
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"rgba": "make_tileable_$(name)($uv, 0.5*$w)",
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"shortdesc": "Output",
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"type": "rgba"
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}
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],
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"parameters": [
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{
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"control": "None",
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"default": 0.1,
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"label": "",
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"longdesc": "Width of the transition areas between parts of the input image",
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"max": 0.25,
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"min": 0,
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"name": "w",
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"shortdesc": "Width",
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"step": 0.01,
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"type": "float"
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}
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]
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},
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"type": "shader"
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} |