material-maker/addons/material_maker/nodes/greyscale.mmg

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2020-01-06 08:17:25 +01:00
{
"name": "greyscale",
"node_position": {
"x": 0,
"y": 0
},
"parameters": {
"brightness": 0,
"contrast": 1,
"mode": 2,
"steps": 6
},
"shader_model": {
"code": "",
"global": "float gs_lightness(vec3 c) {\n\treturn 0.5*(max(c.r, max(c.g, c.b)) + min(c.r, min(c.g, c.b)));\n}\nfloat gs_average(vec3 c) {\n\treturn 0.333333333333*(c.r + c.g + c.b);\n}\nfloat gs_luminosity(vec3 c) {\n\treturn 0.21 * c.r + 0.72 * c.g + 0.07 * c.b;\n}\n",
"inputs": [
{
"default": "vec3(0.0)",
"label": "",
"name": "in",
"type": "rgb"
}
],
"instance": "",
"name": "Greyscale",
"outputs": [
{
"f": "gs_$mode($in($uv))",
"type": "f"
}
],
"parameters": [
{
"default": 2,
"label": "",
"name": "mode",
"type": "enum",
"values": [
{
"name": "Lightness",
"value": "lightness"
},
{
"name": "Average",
"value": "average"
},
{
"name": "Luminosity",
"value": "luminosity"
}
]
}
]
},
"type": "shader"
}