material-maker/addons/material_maker/examples/raymarching.ptex
RodZill4 e919507f06 Added support for raymarching
- Added signed distance functions 2D and 2D input/output types
- Updated SDF2D nodes to used SDF2D inputs/outputs
- Added preview code for SDF2D and SDF3D
- Updates all SDF2D templates
- Added basic SDF3D nodes
2019-12-15 12:41:00 +01:00

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{
"connections": [
{
"from": "_3",
"from_port": 1,
"to": "Material",
"to_port": 4
},
{
"from": "perlin",
"from_port": 0,
"to": "colorize",
"to_port": 0
},
{
"from": "colorize",
"from_port": 0,
"to": "Material",
"to_port": 2
},
{
"from": "sdf3d_sphere",
"from_port": 0,
"to": "_4",
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},
{
"from": "sdf3d_sphere",
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"to": "_4_2",
"to_port": 0
},
{
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"from_port": 0,
"to": "sdf3d_boolean",
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},
{
"from": "_4_2",
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"to": "sdf3d_boolean",
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},
{
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"to": "_4_2_2",
"to_port": 0
},
{
"from": "_4_2_2",
"from_port": 0,
"to": "sdf3d_smoothboolean",
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},
{
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"to": "sdf3d_smoothboolean",
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},
{
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"to": "_4_2_2_2",
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},
{
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},
{
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"to": "sdf3d_smoothboolean_2",
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},
{
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],
"label": "Graph",
"name": "49",
"node_position": {
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"y": 0
},
"nodes": [
{
"name": "Material",
"node_position": {
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"y": -273
},
"parameters": {
"albedo_color": {
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"b": 1,
"g": 1,
"r": 1,
"type": "Color"
},
"ao_light_affect": 1,
"depth_scale": 1,
"emission_energy": 1,
"metallic": 1,
"normal_scale": 1,
"roughness": 1,
"size": 11,
"subsurf_scatter_strength": 0
},
"type": "material"
},
{
"name": "_3",
"node_position": {
"x": -424.5,
"y": -165
},
"parameters": {
},
"shader_model": {
"code": "float $(name_uv)_d = raymarch_$name($uv);\n",
"global": "",
"inputs": [
{
"default": "0.0",
"function": true,
"label": "",
"name": "sdf",
"type": "sdf3d"
}
],
"instance": "float input_$name(vec3 p) {\n\treturn min($sdf(p), p.z);\n}\n\nfloat raymarch_$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 < 50; i++) {\n \tvec3 p = ro + rd*dO;\n float dS = input_$name(p);\n dO += dS;\n if (dO > 0.001 && dS < 0.0001) break;\n }\n \n return dO;\n}\n\nvec3 normal_$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",
"name": "Raymarching",
"outputs": [
{
"f": "1.0-$(name_uv)_d",
"type": "f"
},
{
"rgb": "vec3(0.5)+0.5*normal_$name(vec3($uv-vec2(0.5), 1.0-$(name_uv)_d))",
"type": "rgb"
}
],
"parameters": [
]
},
"type": "shader"
},
{
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"scale_x": 4,
"scale_y": 4
},
"type": "perlin"
},
{
"name": "colorize",
"node_position": {
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"y": -304.25
},
"parameters": {
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"points": [
{
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"g": 0.088542,
"pos": 0,
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{
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{
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"pos": 1,
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}
],
"type": "Gradient"
}
},
"type": "colorize"
},
{
"name": "_4",
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"parameters": {
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"y": 0,
"z": 0
},
"shader_model": {
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"global": "",
"inputs": [
{
"default": "0.0",
"label": "",
"name": "in",
"type": "sdf3d"
}
],
"instance": "",
"name": "Translate",
"outputs": [
{
"sdf3d": "$in($uv+vec3($x, $y, $z))",
"type": "sdf3d"
}
],
"parameters": [
{
"default": 0,
"label": "X",
"max": 1,
"min": -1,
"name": "x",
"step": 0.01,
"type": "float"
},
{
"default": 0,
"label": "Y",
"max": 1,
"min": -1,
"name": "y",
"step": 0.01,
"type": "float"
},
{
"default": 0,
"label": "Z",
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"name": "z",
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"type": "float"
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},
"type": "shader"
},
{
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"parameters": {
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"cx": 0,
"cy": 0,
"h": 0.08,
"op": 0,
"r": 0.3,
"w": 0.28
},
"type": "sdf3d_boolean"
},
{
"name": "sdf3d_box",
"node_position": {
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},
"parameters": {
"r": 0.26,
"sx": 0.1,
"sy": 0.1,
"sz": 0.02
},
"shader_model": {
"code": "vec3 $(name_uv)_q = abs($uv) - vec3($sx, $sy, $sz);\n",
"global": "",
"inputs": [
],
"instance": "",
"name": "Box",
"outputs": [
{
"sdf3d": "length(max($(name_uv)_q,0.0))+min(max($(name_uv)_q.x,max($(name_uv)_q.y,$(name_uv)_q.z)),0.0)-$r",
"type": "sdf3d"
}
],
"parameters": [
{
"default": 0.5,
"label": "Size X",
"max": 1,
"min": 0,
"name": "sx",
"step": 0.01,
"type": "float"
},
{
"default": 0.5,
"label": "Size Y",
"max": 1,
"min": 0,
"name": "sy",
"step": 0.01,
"type": "float"
},
{
"default": 0.5,
"label": "Size Z",
"max": 1,
"min": 0,
"name": "sz",
"step": 0.01,
"type": "float"
},
{
"default": 0.5,
"label": "Radius",
"max": 1,
"min": 0,
"name": "r",
"step": 0.01,
"type": "float"
}
]
},
"type": "shader"
},
{
"name": "sdf3d_torus",
"node_position": {
"x": -819.376282,
"y": -100.60495
},
"parameters": {
"R": 0.38,
"a1": 0.5,
"a2": 0.865,
"r": 0.03,
"sx": 0.1,
"sy": 0.1,
"sz": 0.02
},
"shader_model": {
"code": "\n",
"global": "float sdf3CappedTorus(vec3 p, float R, float r, vec2 sc) {\n\tp.x = abs(p.x);\n\tfloat k = (sc.y*p.x>sc.x*p.y)?dot(p.xy,sc):length(p.xy);\n\treturn sqrt(dot(p,p)+R*R-2.0*R*k)-r;\n}\n",
"inputs": [
],
"instance": "",
"name": "Capped Torus",
"outputs": [
{
"sdf3d": "sdf3CappedTorus($uv, $R, $r, vec2($a1, $a2))",
"type": "sdf3d"
}
],
"parameters": [
{
"default": 0.5,
"label": "R",
"max": 1,
"min": 0,
"name": "R",
"step": 0.01,
"type": "float"
},
{
"default": 0.1,
"label": "r",
"max": 0.5,
"min": 0,
"name": "r",
"step": 0.01,
"type": "float"
},
{
"default": 0.5,
"label": "A1",
"max": 1,
"min": 0,
"name": "a1",
"step": 0.01,
"type": "float"
},
{
"default": 0.5,
"label": "A2",
"max": 1,
"min": 0,
"name": "a2",
"step": 0.01,
"type": "float"
}
]
},
"type": "shader"
},
{
"name": "sdf3d_smoothboolean",
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"y": -189.10495
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"parameters": {
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"cx": 0,
"cy": 0,
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"k": 0.02,
"op": 1,
"r": 0.3,
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},
"type": "sdf3d_smoothboolean"
},
{
"name": "_4_2",
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"parameters": {
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"y": 0,
"z": 0
},
"shader_model": {
"code": "",
"global": "",
"inputs": [
{
"default": "0.0",
"label": "",
"name": "in",
"type": "sdf3d"
}
],
"instance": "",
"name": "Translate",
"outputs": [
{
"sdf3d": "$in($uv+vec3($x, $y, $z))",
"type": "sdf3d"
}
],
"parameters": [
{
"default": 0,
"label": "X",
"max": 1,
"min": -1,
"name": "x",
"step": 0.01,
"type": "float"
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{
"default": 0,
"label": "Y",
"max": 1,
"min": -1,
"name": "y",
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"type": "float"
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{
"default": 0,
"label": "Z",
"max": 1,
"min": -1,
"name": "z",
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"type": "float"
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]
},
"type": "shader"
},
{
"name": "_4_2_2",
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"y": -300.60495
},
"parameters": {
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"z": -0.23
},
"shader_model": {
"code": "",
"global": "",
"inputs": [
{
"default": "0.0",
"label": "",
"name": "in",
"type": "sdf3d"
}
],
"instance": "",
"name": "Translate",
"outputs": [
{
"sdf3d": "$in($uv+vec3($x, $y, $z))",
"type": "sdf3d"
}
],
"parameters": [
{
"default": 0,
"label": "X",
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{
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{
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]
},
"type": "shader"
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{
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"y": 32.162903
},
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"shader_model": {
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"inputs": [
{
"default": "0.0",
"label": "",
"name": "in",
"type": "sdf3d"
}
],
"instance": "",
"name": "Translate",
"outputs": [
{
"sdf3d": "$in($uv+vec3($x, $y, $z))",
"type": "sdf3d"
}
],
"parameters": [
{
"default": 0,
"label": "X",
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{
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{
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},
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},
{
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"y": -171.337097
},
"parameters": {
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"cy": 0,
"h": 0.08,
"k": 0.04,
"op": 1,
"r": 0.3,
"w": 0.28
},
"type": "sdf3d_smoothboolean"
},
{
"name": "sdf3d_sphere",
"node_position": {
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"y": -359.10495
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"parameters": {
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},
"type": "sdf3d_sphere"
}
],
"parameters": {
},
"type": "graph"
}