mirror of
https://github.com/Relintai/material-maker.git
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39 lines
1.3 KiB
Plaintext
39 lines
1.3 KiB
Plaintext
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{
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"name": "raymarching",
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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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},
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"shader_model": {
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"code": "float $(name_uv)_d = raymarch_$name($uv);\n",
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"global": "",
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"inputs": [
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{
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"default": "0.0",
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"function": true,
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"label": "",
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"name": "sdf",
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"type": "sdf3d"
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}
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],
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"instance": "float input_$name(vec3 p) {\n\tif (p.z > 0.0) {\n\t\treturn $sdf(p);\n\t} else {\n\t\treturn p.z;\n\t}\n}\n\nfloat raymarch_$name(vec2 uv) {\n\tvec3 ro = vec3(uv-vec2(0.5), 1.0);\n\tvec3 rd = vec3(0.0, 0.0, -1.0);\n\tfloat dO=0.;\n \n for (int i=0; i < 25; i++) {\n \tvec3 p = ro + rd*dO;\n float dS = input_$name(p);\n dO += dS;\n if (dO > 1.0 || dS < 0.0001) break;\n }\n \n return dO;\n}\n\nvec3 normal_$name(vec3 p) {\n\tfloat d = input_$name(p);\n float e = .001;\n \n vec3 n = d - vec3(\n input_$name(p-vec3(e, 0.0, 0.0)),\n input_$name(p-vec3(0.0, e, 0.0)),\n input_$name(p-vec3(0.0, 0.0, e)));\n \n return vec3(-1.0, -1.0, -1.0)*normalize(n);\n}\n\n",
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"name": "Raymarching",
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"outputs": [
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{
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"f": "1.0-$(name_uv)_d",
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"type": "f"
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},
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{
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"rgb": "vec3(0.5)+0.5*normal_$name(vec3($uv-vec2(0.5), 1.0-$(name_uv)_d))",
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"type": "rgb"
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}
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],
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"parameters": [
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]
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},
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"type": "shader"
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}
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